diff --git a/Network.hs b/Network.hs
--- a/Network.hs
+++ b/Network.hs
@@ -83,6 +83,7 @@
 #if !defined(mingw32_HOST_OS) && !defined(cygwin32_HOST_OS) && !defined(_WIN32)
         | UnixSocket String             -- Unix family socket in file system
 #endif
+        deriving (Show, Eq)
 
 -- | Calling 'connectTo' creates a client side socket which is
 -- connected to the given host and port.  The Protocol and socket type is
@@ -161,17 +162,21 @@
 -- | Creates the server side socket which has been bound to the
 -- specified port.
 --
--- NOTE: To avoid the \"Address already in use\"
--- problems popped up several times on the GHC-Users mailing list we
--- set the 'ReuseAddr' socket option on the listening socket.  If you
--- don't want this behaviour, please use the lower level
--- 'Network.Socket.listen' instead.
+-- 'maxListenQueue' (typically 128) is specified to the listen queue.
+-- This is good enough for normal network servers but is too small
+-- for high performance servers.
 --
+-- To avoid the \"Address already in use\" problems,
+-- the 'ReuseAddr' socket option is set on the listening socket.
+--
 -- If available, the 'IPv6Only' socket option is set to 0
 -- so that both IPv4 and IPv6 can be accepted with this socket.
+--
+-- If you don't like the behavior above, please use the lower level
+-- 'Network.Socket.listen' instead.
 
 listenOn :: PortID      -- ^ Port Identifier
-         -> IO Socket   -- ^ Connected Socket
+         -> IO Socket   -- ^ Listening Socket
 
 #if defined(IPV6_SOCKET_SUPPORT)
 -- IPv6 and IPv4.
@@ -464,5 +469,5 @@
 firstSuccessful [] = error "firstSuccessful: empty list"
 firstSuccessful (p:ps) = catchIO p $ \e ->
     case ps of
-        [] -> Exception.throw e
+        [] -> Exception.throwIO e
         _  -> firstSuccessful ps
diff --git a/Network/BSD.hsc b/Network/BSD.hsc
--- a/Network/BSD.hsc
+++ b/Network/BSD.hsc
@@ -91,9 +91,6 @@
 #endif
     ) where
 
-#ifdef __HUGS__
-import Hugs.Prelude (IOException(..), IOErrorType(..))
-#endif
 import Network.Socket
 
 import Control.Concurrent (MVar, newMVar, withMVar)
diff --git a/Network/Socket.hsc b/Network/Socket.hsc
--- a/Network/Socket.hsc
+++ b/Network/Socket.hsc
@@ -5,7 +5,7 @@
 -- Module      :  Network.Socket
 -- Copyright   :  (c) The University of Glasgow 2001
 -- License     :  BSD-style (see the file libraries/network/LICENSE)
--- 
+--
 -- Maintainer  :  libraries@haskell.org
 -- Stability   :  provisional
 -- Portability :  portable
@@ -31,7 +31,7 @@
     (
     -- * Types
       Socket(..)
-    , Family(..)         
+    , Family(..)
     , isSupportedFamily
     , SocketType(..)
     , isSupportedSocketType
@@ -98,10 +98,12 @@
 
     , recvFrom
     , recvBufFrom
-    
+
     , send
     , recv
     , recvLen
+    , sendBuf
+    , recvBuf
 
     , inet_addr
     , inet_ntoa
@@ -144,7 +146,7 @@
 
     -- * Initialisation
     , withSocketsDo
-    
+
     -- * Very low level operations
     -- in case you ever want to get at the underlying file descriptor..
     , fdSocket
@@ -170,23 +172,10 @@
     , packSocketType
     ) where
 
-#ifdef __HUGS__
-import Hugs.Prelude ( IOException(..), IOErrorType(..) )
-import Hugs.IO ( openFd )
-
-{-# CFILES cbits/HsNet.c #-}
-# if HAVE_STRUCT_MSGHDR_MSG_CONTROL || HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
-{-# CFILES cbits/ancilData.c #-}
-# endif
-# if defined(HAVE_WINSOCK2_H) && !defined(__CYGWIN__)
-{-# CFILES cbits/initWinSock.c cbits/winSockErr.c #-}
-# endif
-#endif
-
 import Data.Bits
 import Data.List (foldl')
 import Data.Maybe (fromMaybe, isJust)
-import Data.Word (Word16, Word32)
+import Data.Word (Word8, Word16, Word32)
 import Foreign.Ptr (Ptr, castPtr, nullPtr)
 import Foreign.Storable (Storable(..))
 import Foreign.C.Error
@@ -238,6 +227,7 @@
 #endif
 
 import Network.Socket.Internal
+import Network.Socket.Types
 
 -- | Either a host name e.g., @\"haskell.org\"@ or a numeric host
 -- address string consisting of a dotted decimal IPv4 address or an
@@ -268,43 +258,10 @@
 -----------------------------------------------------------------------------
 -- Socket types
 
--- There are a few possible ways to do this.  The first is convert the
--- structs used in the C library into an equivalent Haskell type. An
--- other possible implementation is to keep all the internals in the C
--- code and use an Int## and a status flag. The second method is used
--- here since a lot of the C structures are not required to be
--- manipulated.
-
--- Originally the status was non-mutable so we had to return a new
--- socket each time we changed the status.  This version now uses
--- mutable variables to avoid the need to do this.  The result is a
--- cleaner interface and better security since the application
--- programmer now can't circumvent the status information to perform
--- invalid operations on sockets.
-
-data SocketStatus
-  -- Returned Status    Function called
-  = NotConnected        -- socket
-  | Bound               -- bind
-  | Listening           -- listen
-  | Connected           -- connect/accept
-  | ConvertedToHandle   -- is now a Handle, don't touch
-  | Closed              -- close
-    deriving (Eq, Show, Typeable)
-
-data Socket
-  = MkSocket
-            CInt                 -- File Descriptor
-            Family                                
-            SocketType                            
-            ProtocolNumber       -- Protocol Number
-            (MVar SocketStatus)  -- Status Flag
-  deriving Typeable
-
 #if __GLASGOW_HASKELL__ >= 611 && defined(mingw32_HOST_OS)
-socket2FD  (MkSocket fd _ _ _ _) = 
-  -- HACK, 1 means True 
-  FD{fdFD = fd,fdIsSocket_ = 1} 
+socket2FD  (MkSocket fd _ _ _ _) =
+  -- HACK, 1 means True
+  FD{fdFD = fd,fdIsSocket_ = 1}
 #endif
 
 mkSocket :: CInt
@@ -317,68 +274,14 @@
    mStat <- newMVar stat
    return (MkSocket fd fam sType pNum mStat)
 
-instance Eq Socket where
-  (MkSocket _ _ _ _ m1) == (MkSocket _ _ _ _ m2) = m1 == m2
 
-instance Show Socket where
-  showsPrec _n (MkSocket fd _ _ _ _) =
-        showString "<socket: " . shows fd . showString ">"
-
-
 fdSocket :: Socket -> CInt
 fdSocket (MkSocket fd _ _ _ _) = fd
 
-type ProtocolNumber = CInt
-
 -- | This is the default protocol for a given service.
 defaultProtocol :: ProtocolNumber
 defaultProtocol = 0
 
-----------------------------------------------------------------------------
--- Port Numbers
-
-instance Show PortNumber where
-  showsPrec p pn = showsPrec p (portNumberToInt pn)
-
-intToPortNumber :: Int -> PortNumber
-intToPortNumber v = PortNum (htons (fromIntegral v))
-
-portNumberToInt :: PortNumber -> Int
-portNumberToInt (PortNum po) = fromIntegral (ntohs po)
-
-foreign import CALLCONV unsafe "ntohs" ntohs :: Word16 -> Word16
-foreign import CALLCONV unsafe "htons" htons :: Word16 -> Word16
---foreign import CALLCONV unsafe "ntohl" ntohl :: Word32 -> Word32
-foreign import CALLCONV unsafe "htonl" htonl :: Word32 -> Word32
-
-instance Enum PortNumber where
-    toEnum   = intToPortNumber
-    fromEnum = portNumberToInt
-
-instance Num PortNumber where
-   fromInteger i = intToPortNumber (fromInteger i)
-    -- for completeness.
-   (+) x y   = intToPortNumber (portNumberToInt x + portNumberToInt y)
-   (-) x y   = intToPortNumber (portNumberToInt x - portNumberToInt y)
-   negate x  = intToPortNumber (-portNumberToInt x)
-   (*) x y   = intToPortNumber (portNumberToInt x * portNumberToInt y)
-   abs n     = intToPortNumber (abs (portNumberToInt n))
-   signum n  = intToPortNumber (signum (portNumberToInt n))
-
-instance Real PortNumber where
-    toRational x = toInteger x % 1
-
-instance Integral PortNumber where
-    quotRem a b = let (c,d) = quotRem (portNumberToInt a) (portNumberToInt b) in
-                  (intToPortNumber c, intToPortNumber d)
-    toInteger a = toInteger (portNumberToInt a)
-
-instance Storable PortNumber where
-   sizeOf    _ = sizeOf    (undefined :: Word16)
-   alignment _ = alignment (undefined :: Word16)
-   poke p (PortNum po) = poke (castPtr p) po
-   peek p = PortNum `liftM` peek (castPtr p)
-
 -----------------------------------------------------------------------------
 -- SockAddr
 
@@ -387,7 +290,7 @@
   showsPrec _ (SockAddrUnix str) = showString str
 #endif
   showsPrec _ (SockAddrInet port ha)
-   = showString (unsafePerformIO (inet_ntoa ha)) 
+   = showString (unsafePerformIO (inet_ntoa ha))
    . showString ":"
    . shows port
 #if defined(IPV6_SOCKET_SUPPORT)
@@ -424,13 +327,7 @@
     c_stype <- packSocketTypeOrThrow "socket" stype
     fd <- throwSocketErrorIfMinus1Retry "socket" $
                 c_socket (packFamily family) c_stype protocol
-#if !defined(__HUGS__)
-# if __GLASGOW_HASKELL__ < 611
-    System.Posix.Internals.setNonBlockingFD fd
-# else
-    System.Posix.Internals.setNonBlockingFD fd True
-# endif
-#endif
+    setNonBlockIfNeeded fd
     socket_status <- newMVar NotConnected
     let sock = MkSocket fd family stype protocol socket_status
 #if HAVE_DECL_IPV6_V6ONLY
@@ -459,19 +356,13 @@
     c_stype <- packSocketTypeOrThrow "socketPair" stype
     _rc <- throwSocketErrorIfMinus1Retry "socketpair" $
                 c_socketpair (packFamily family) c_stype protocol fdArr
-    [fd1,fd2] <- peekArray 2 fdArr 
+    [fd1,fd2] <- peekArray 2 fdArr
     s1 <- mkNonBlockingSocket fd1
     s2 <- mkNonBlockingSocket fd2
     return (s1,s2)
   where
     mkNonBlockingSocket fd = do
-#if !defined(__HUGS__)
-# if __GLASGOW_HASKELL__ < 611
-       System.Posix.Internals.setNonBlockingFD fd
-# else
-       System.Posix.Internals.setNonBlockingFD fd True
-# endif
-#endif
+       setNonBlockIfNeeded fd
        stat <- newMVar Connected
        return (MkSocket fd family stype protocol stat)
 
@@ -479,6 +370,15 @@
   c_socketpair :: CInt -> CInt -> CInt -> Ptr CInt -> IO CInt
 #endif
 
+-- | Set the socket to nonblocking, if applicable to this platform.
+setNonBlockIfNeeded :: CInt -> IO ()
+setNonBlockIfNeeded fd =
+#if __GLASGOW_HASKELL__ < 611
+    System.Posix.Internals.setNonBlockingFD fd
+#else
+    System.Posix.Internals.setNonBlockingFD fd True
+#endif
+
 -----------------------------------------------------------------------------
 -- Binding a socket
 
@@ -492,7 +392,7 @@
            -> IO ()
 bind (MkSocket s _family _stype _protocol socketStatus) addr = do
  modifyMVar_ socketStatus $ \ status -> do
- if status /= NotConnected 
+ if status /= NotConnected
   then
    ioError (userError ("bind: can't peform bind on socket in status " ++
          show status))
@@ -520,7 +420,7 @@
     let connectLoop = do
            r <- c_connect s p_addr (fromIntegral sz)
            if r == -1
-               then do 
+               then do
 #if !(defined(HAVE_WINSOCK2_H) && !defined(cygwin32_HOST_OS))
                    err <- getErrno
                    case () of
@@ -531,7 +431,7 @@
 #else
                    rc <- c_getLastError
                    case rc of
-                     10093 -> do -- WSANOTINITIALISED
+                     #{const WSANOTINITIALISED} -> do
                        withSocketsDo (return ())
                        r <- c_connect s p_addr (fromIntegral sz)
                        if r == -1
@@ -541,16 +441,12 @@
 #endif
                else return r
 
-        connectBlocked = do 
-#if !defined(__HUGS__)
+        connectBlocked = do
            threadWaitWrite (fromIntegral s)
-#endif
            err <- getSocketOption sock SoError
            if (err == 0)
                 then return 0
-                else do ioError (errnoToIOError "connect" 
-                                (Errno (fromIntegral err))
-                                Nothing Nothing)
+                else throwSocketErrorCode "connect" (fromIntegral err)
 
     connectLoop
     return Connected
@@ -566,7 +462,7 @@
        -> IO ()
 listen (MkSocket s _family _stype _protocol socketStatus) backlog = do
  modifyMVar_ socketStatus $ \ status -> do
- if status /= Bound 
+ if status /= Bound
    then
      ioError (userError ("listen: can't peform listen on socket in status " ++
          show status))
@@ -604,45 +500,36 @@
      allocaBytes sz $ \ sockaddr -> do
 #if defined(mingw32_HOST_OS) && defined(__GLASGOW_HASKELL__)
      new_sock <-
-        if threaded 
+        if threaded
            then with (fromIntegral sz) $ \ ptr_len ->
-                  throwErrnoIfMinus1Retry "Network.Socket.accept" $
+                  throwSocketErrorIfMinus1Retry "Network.Socket.accept" $
                     c_accept_safe s sockaddr ptr_len
            else do
                 paramData <- c_newAcceptParams s (fromIntegral sz) sockaddr
                 rc        <- asyncDoProc c_acceptDoProc paramData
                 new_sock  <- c_acceptNewSock    paramData
                 c_free paramData
-                when (rc /= 0)
-                     (ioError (errnoToIOError "Network.Socket.accept" (Errno (fromIntegral rc)) Nothing Nothing))
+                when (rc /= 0) $
+                     throwSocketErrorCode "Network.Socket.accept" (fromIntegral rc)
                 return new_sock
-#else 
+#else
      with (fromIntegral sz) $ \ ptr_len -> do
-     new_sock <- 
+     new_sock <-
 # ifdef HAVE_ACCEPT4
                  throwSocketErrorIfMinus1RetryMayBlock "accept"
                         (threadWaitRead (fromIntegral s))
                         (c_accept4 s sockaddr ptr_len (#const SOCK_NONBLOCK))
 # else
-#  if !defined(__HUGS__)
-                 throwSocketErrorIfMinus1RetryMayBlock "accept"
-                        (threadWaitRead (fromIntegral s))
-#  endif
+                 throwSocketErrorWaitRead sock "accept"
                         (c_accept s sockaddr ptr_len)
-#  if !defined(__HUGS__)
-#   if __GLASGOW_HASKELL__ < 611
-     System.Posix.Internals.setNonBlockingFD new_sock
-#   else
-     System.Posix.Internals.setNonBlockingFD new_sock True
-#   endif
-#  endif
 # endif /* HAVE_ACCEPT4 */
 #endif
+     setNonBlockIfNeeded new_sock
      addr <- peekSockAddr sockaddr
      new_status <- newMVar Connected
      return ((MkSocket new_sock family stype protocol new_status), addr)
 
-#if defined(mingw32_HOST_OS) && !defined(__HUGS__)
+#if defined(mingw32_HOST_OS)
 foreign import ccall unsafe "HsNet.h acceptNewSock"
   c_acceptNewSock :: Ptr () -> IO CInt
 foreign import ccall unsafe "HsNet.h newAcceptParams"
@@ -690,14 +577,11 @@
           -> Ptr a -> Int  -- Data to send
           -> SockAddr
           -> IO Int            -- Number of Bytes sent
-sendBufTo (MkSocket s _family _stype _protocol _status) ptr nbytes addr = do
+sendBufTo sock@(MkSocket s _family _stype _protocol _status) ptr nbytes addr = do
  withSockAddr addr $ \p_addr sz -> do
    liftM fromIntegral $
-#if !defined(__HUGS__)
-     throwSocketErrorIfMinus1RetryMayBlock "sendTo"
-        (threadWaitWrite (fromIntegral s)) $
-#endif
-        c_sendto s ptr (fromIntegral $ nbytes) 0{-flags-} 
+     throwSocketErrorWaitWrite sock "sendTo" $
+        c_sendto s ptr (fromIntegral $ nbytes) 0{-flags-}
                         p_addr (fromIntegral sz)
 
 -- | Receive data from the socket. The socket need not be in a
@@ -726,16 +610,12 @@
 recvBufFrom :: Socket -> Ptr a -> Int -> IO (Int, SockAddr)
 recvBufFrom sock@(MkSocket s family _stype _protocol _status) ptr nbytes
  | nbytes <= 0 = ioError (mkInvalidRecvArgError "Network.Socket.recvFrom")
- | otherwise   = 
+ | otherwise   =
     withNewSockAddr family $ \ptr_addr sz -> do
       alloca $ \ptr_len -> do
         poke ptr_len (fromIntegral sz)
-        len <- 
-#if !defined(__HUGS__)
-               throwSocketErrorIfMinus1RetryMayBlock "recvFrom"
-                   (threadWaitRead (fromIntegral s)) $
-#endif
-                   c_recvfrom s ptr (fromIntegral nbytes) 0{-flags-} 
+        len <- throwSocketErrorWaitRead sock "recvFrom" $
+                   c_recvfrom s ptr (fromIntegral nbytes) 0{-flags-}
                                 ptr_addr ptr_len
         let len' = fromIntegral len
         if len' == 0
@@ -743,13 +623,13 @@
          else do
            flg <- isConnected sock
              -- For at least one implementation (WinSock 2), recvfrom() ignores
-             -- filling in the sockaddr for connected TCP sockets. Cope with 
+             -- filling in the sockaddr for connected TCP sockets. Cope with
              -- this by using getPeerName instead.
-           sockaddr <- 
+           sockaddr <-
                 if flg then
                    getPeerName sock
                 else
-                   peekSockAddr ptr_addr 
+                   peekSockAddr ptr_addr
            return (len', sockaddr)
 
 -----------------------------------------------------------------------------
@@ -766,31 +646,60 @@
  withCString xs $ \str -> do
    liftM fromIntegral $
 #if defined(__GLASGOW_HASKELL__) && defined(mingw32_HOST_OS)
-# if __GLASGOW_HASKELL__ >= 611    
-    writeRawBufferPtr 
-      "Network.Socket.send" 
+# if __GLASGOW_HASKELL__ >= 611
+    writeRawBufferPtr
+      "Network.Socket.send"
       (socket2FD sock)
       (castPtr str)
       0
       (fromIntegral len)
-#else      
-      writeRawBufferPtr 
-        "Network.Socket.send" 
-        (fromIntegral s) 
-        True 
-        str 
-        0 
+#else
+      writeRawBufferPtr
+        "Network.Socket.send"
+        (fromIntegral s)
+        True
+        str
+        0
        (fromIntegral len)
-#endif    
-    
+#endif
+
 #else
-# if !defined(__HUGS__)
-     throwSocketErrorIfMinus1RetryMayBlock "send"
-        (threadWaitWrite (fromIntegral s)) $
+     throwSocketErrorWaitWrite sock "send" $
+        c_send s str (fromIntegral len) 0{-flags-}
+#endif
+
+-- | Send data to the socket. The socket must be connected to a remote
+-- socket. Returns the number of bytes sent.  Applications are
+-- responsible for ensuring that all data has been sent.
+sendBuf :: Socket     -- Bound/Connected Socket
+        -> Ptr Word8  -- Pointer to the data to send
+        -> Int        -- Length of the buffer
+        -> IO Int     -- Number of Bytes sent
+sendBuf sock@(MkSocket s _family _stype _protocol _status) str len = do
+   liftM fromIntegral $
+#if defined(__GLASGOW_HASKELL__) && defined(mingw32_HOST_OS)
+# if __GLASGOW_HASKELL__ >= 611
+    writeRawBufferPtr
+      "Network.Socket.sendBuf"
+      (socket2FD sock)
+      (castPtr str)
+      0
+      (fromIntegral len)
+# else
+      writeRawBufferPtr
+        "Network.Socket.sendBuf"
+        (fromIntegral s)
+        True
+        str
+        0
+       (fromIntegral len)
 # endif
-        c_send s str (fromIntegral len) 0{-flags-} 
+#else
+     throwSocketErrorWaitWrite sock "sendBuf" $
+        c_send s str (fromIntegral len) 0{-flags-}
 #endif
 
+
 -- | Receive data from the socket.  The socket must be in a connected
 -- state. This function may return fewer bytes than specified.  If the
 -- message is longer than the specified length, it may be discarded
@@ -810,21 +719,18 @@
  | nbytes <= 0 = ioError (mkInvalidRecvArgError "Network.Socket.recv")
  | otherwise   = do
      allocaBytes nbytes $ \ptr -> do
-        len <- 
+        len <-
 #if defined(__GLASGOW_HASKELL__) && defined(mingw32_HOST_OS)
-# if __GLASGOW_HASKELL__ >= 611    
+# if __GLASGOW_HASKELL__ >= 611
           readRawBufferPtr "Network.Socket.recvLen" (socket2FD sock) ptr 0
                  (fromIntegral nbytes)
-#else          
+#else
           readRawBufferPtr "Network.Socket.recvLen" (fromIntegral s) True ptr 0
                  (fromIntegral nbytes)
 #endif
 #else
-# if !defined(__HUGS__)
-               throwSocketErrorIfMinus1RetryMayBlock "recv"
-                   (threadWaitRead (fromIntegral s)) $
-# endif
-                   c_recv s ptr (fromIntegral nbytes) 0{-flags-} 
+               throwSocketErrorWaitRead sock "recv" $
+                   c_recv s ptr (fromIntegral nbytes) 0{-flags-}
 #endif
         let len' = fromIntegral len
         if len' == 0
@@ -833,6 +739,43 @@
            s' <- peekCStringLen (castPtr ptr,len')
            return (s', len')
 
+-- | Receive data from the socket.  The socket must be in a connected
+-- state. This function may return fewer bytes than specified.  If the
+-- message is longer than the specified length, it may be discarded
+-- depending on the type of socket.  This function may block until a
+-- message arrives.
+--
+-- Considering hardware and network realities, the maximum number of
+-- bytes to receive should be a small power of 2, e.g., 4096.
+--
+-- For TCP sockets, a zero length return value means the peer has
+-- closed its half side of the connection.
+recvBuf :: Socket -> Ptr Word8 -> Int -> IO Int
+recvBuf sock p l = recvLenBuf sock p l
+
+recvLenBuf :: Socket -> Ptr Word8 -> Int -> IO Int
+recvLenBuf sock@(MkSocket s _family _stype _protocol _status) ptr nbytes
+ | nbytes <= 0 = ioError (mkInvalidRecvArgError "Network.Socket.recvBuf")
+ | otherwise   = do
+        len <-
+#if defined(__GLASGOW_HASKELL__) && defined(mingw32_HOST_OS)
+# if __GLASGOW_HASKELL__ >= 611
+          readRawBufferPtr "Network.Socket.recvLenBuf" (socket2FD sock) ptr 0
+                 (fromIntegral nbytes)
+#else
+          readRawBufferPtr "Network.Socket.recvLenBuf" (fromIntegral s) True ptr 0
+                 (fromIntegral nbytes)
+#endif
+#else
+               throwSocketErrorWaitRead sock "recvBuf" $
+                   c_recv s (castPtr ptr) (fromIntegral nbytes) 0{-flags-}
+#endif
+        let len' = fromIntegral len
+        if len' == 0
+         then ioError (mkEOFError "Network.Socket.recvBuf")
+         else return len'
+
+
 -- ---------------------------------------------------------------------------
 -- socketPort
 --
@@ -870,7 +813,7 @@
    throwSocketErrorIfMinus1Retry "getPeerName" $ c_getpeername s ptr int_star
    _sz <- peek int_star
    peekSockAddr ptr
-    
+
 getSocketName :: Socket -> IO SockAddr
 getSocketName (MkSocket s family _ _ _) = do
  withNewSockAddr family $ \ptr sz -> do
@@ -1017,14 +960,14 @@
 
 -- | Set a socket option that expects an Int value.
 -- There is currently no API to set e.g. the timeval socket options
-setSocketOption :: Socket 
+setSocketOption :: Socket
                 -> SocketOption -- Option Name
                 -> Int          -- Option Value
                 -> IO ()
 setSocketOption (MkSocket s _ _ _ _) so v = do
    (level, opt) <- packSocketOption' "setSocketOption" so
    with (fromIntegral v) $ \ptr_v -> do
-   throwErrnoIfMinus1_ "setSocketOption" $
+   throwSocketErrorIfMinus1_ "setSocketOption" $
        c_setsockopt s level opt ptr_v
           (fromIntegral (sizeOf (undefined :: CInt)))
    return ()
@@ -1039,7 +982,7 @@
    (level, opt) <- packSocketOption' "getSocketOption" so
    alloca $ \ptr_v ->
      with (fromIntegral (sizeOf (undefined :: CInt))) $ \ptr_sz -> do
-       throwErrnoIfMinus1 "getSocketOption" $
+       throwSocketErrorIfMinus1Retry "getSocketOption" $
          c_getsockopt s level opt ptr_v ptr_sz
        fromIntegral `liftM` peek ptr_v
 
@@ -1052,10 +995,10 @@
 getPeerCred sock = do
   let fd = fdSocket sock
   let sz = (fromIntegral (#const sizeof(struct ucred)))
-  with sz $ \ ptr_cr -> 
+  with sz $ \ ptr_cr ->
    alloca       $ \ ptr_sz -> do
      poke ptr_sz sz
-     throwErrnoIfMinus1 "getPeerCred" $
+     throwSocketErrorIfMinus1Retry "getPeerCred" $
        c_getsockopt fd (#const SOL_SOCKET) (#const SO_PEERCRED) ptr_cr ptr_sz
      pid <- (#peek struct ucred, pid) ptr_cr
      uid <- (#peek struct ucred, uid) ptr_cr
@@ -1072,27 +1015,16 @@
 -- for transmitting file descriptors, mainly.
 sendFd :: Socket -> CInt -> IO ()
 sendFd sock outfd = do
-  let fd = fdSocket sock
-#if !defined(__HUGS__)
-  throwSocketErrorIfMinus1RetryMayBlock "sendFd"
-     (threadWaitWrite (fromIntegral fd)) $
-     c_sendFd fd outfd
-#else
-  c_sendFd fd outfd
-#endif
-   -- Note: If Winsock supported FD-passing, thi would have been 
+  throwSocketErrorWaitWrite sock "sendFd" $
+     c_sendFd (fdSocket sock) outfd
+   -- Note: If Winsock supported FD-passing, thi would have been
    -- incorrect (since socket FDs need to be closed via closesocket().)
   closeFd outfd
-  
+
 recvFd :: Socket -> IO CInt
 recvFd sock = do
-  let fd = fdSocket sock
-  theFd <- 
-#if !defined(__HUGS__)
-    throwSocketErrorIfMinus1RetryMayBlock "recvFd" 
-        (threadWaitRead (fromIntegral fd)) $
-#endif
-         c_recvFd fd
+  theFd <- throwSocketErrorWaitRead sock "recvFd" $
+               c_recvFd (fdSocket sock)
   return theFd
 
 foreign import ccall SAFE_ON_WIN "sendFd" c_sendFd :: CInt -> CInt -> IO CInt
@@ -1101,512 +1033,9 @@
 #endif
 
 -- ---------------------------------------------------------------------------
--- OS Dependent Definitions
-
-packFamily :: Family -> CInt
-packFamily f = case packFamily' f of
-    Just fam -> fam
-    Nothing -> error $
-               "Network.Socket.packFamily: unsupported address family: " ++
-               show f
-
--- | Does the AF_ constant corresponding to the given family exist on this 
--- system?
-isSupportedFamily :: Family -> Bool
-isSupportedFamily = isJust . packFamily'
-
-packFamily' :: Family -> Maybe CInt
-packFamily' f = case Just f of
-    -- the Just above is to disable GHC's overlapping pattern
-    -- detection: see comments for packSocketOption
-    Just AF_UNSPEC -> Just #const AF_UNSPEC
-#ifdef AF_UNIX
-    Just AF_UNIX -> Just #const AF_UNIX
-#endif
-#ifdef AF_INET
-    Just AF_INET -> Just #const AF_INET
-#endif
-#ifdef AF_INET6
-    Just AF_INET6 -> Just #const AF_INET6
-#endif
-#ifdef AF_IMPLINK
-    Just AF_IMPLINK -> Just #const AF_IMPLINK
-#endif
-#ifdef AF_PUP
-    Just AF_PUP -> Just #const AF_PUP
-#endif
-#ifdef AF_CHAOS
-    Just AF_CHAOS -> Just #const AF_CHAOS
-#endif
-#ifdef AF_NS
-    Just AF_NS -> Just #const AF_NS
-#endif
-#ifdef AF_NBS
-    Just AF_NBS -> Just #const AF_NBS
-#endif
-#ifdef AF_ECMA
-    Just AF_ECMA -> Just #const AF_ECMA
-#endif
-#ifdef AF_DATAKIT
-    Just AF_DATAKIT -> Just #const AF_DATAKIT
-#endif
-#ifdef AF_CCITT
-    Just AF_CCITT -> Just #const AF_CCITT
-#endif
-#ifdef AF_SNA
-    Just AF_SNA -> Just #const AF_SNA
-#endif
-#ifdef AF_DECnet
-    Just AF_DECnet -> Just #const AF_DECnet
-#endif
-#ifdef AF_DLI
-    Just AF_DLI -> Just #const AF_DLI
-#endif
-#ifdef AF_LAT
-    Just AF_LAT -> Just #const AF_LAT
-#endif
-#ifdef AF_HYLINK
-    Just AF_HYLINK -> Just #const AF_HYLINK
-#endif
-#ifdef AF_APPLETALK
-    Just AF_APPLETALK -> Just #const AF_APPLETALK
-#endif
-#ifdef AF_ROUTE
-    Just AF_ROUTE -> Just #const AF_ROUTE
-#endif
-#ifdef AF_NETBIOS
-    Just AF_NETBIOS -> Just #const AF_NETBIOS
-#endif
-#ifdef AF_NIT
-    Just AF_NIT -> Just #const AF_NIT
-#endif
-#ifdef AF_802
-    Just AF_802 -> Just #const AF_802
-#endif
-#ifdef AF_ISO
-    Just AF_ISO -> Just #const AF_ISO
-#endif
-#ifdef AF_OSI
-    Just AF_OSI -> Just #const AF_OSI
-#endif
-#ifdef AF_NETMAN
-    Just AF_NETMAN -> Just #const AF_NETMAN
-#endif
-#ifdef AF_X25
-    Just AF_X25 -> Just #const AF_X25
-#endif
-#ifdef AF_AX25
-    Just AF_AX25 -> Just #const AF_AX25
-#endif
-#ifdef AF_OSINET
-    Just AF_OSINET -> Just #const AF_OSINET
-#endif
-#ifdef AF_GOSSIP
-    Just AF_GOSSIP -> Just #const AF_GOSSIP
-#endif
-#ifdef AF_IPX
-    Just AF_IPX -> Just #const AF_IPX
-#endif
-#ifdef Pseudo_AF_XTP
-    Just Pseudo_AF_XTP -> Just #const Pseudo_AF_XTP
-#endif
-#ifdef AF_CTF
-    Just AF_CTF -> Just #const AF_CTF
-#endif
-#ifdef AF_WAN
-    Just AF_WAN -> Just #const AF_WAN
-#endif
-#ifdef AF_SDL
-    Just AF_SDL -> Just #const AF_SDL
-#endif
-#ifdef AF_NETWARE
-    Just AF_NETWARE -> Just #const AF_NETWARE
-#endif
-#ifdef AF_NDD
-    Just AF_NDD -> Just #const AF_NDD
-#endif
-#ifdef AF_INTF
-    Just AF_INTF -> Just #const AF_INTF
-#endif
-#ifdef AF_COIP
-    Just AF_COIP -> Just #const AF_COIP
-#endif
-#ifdef AF_CNT
-    Just AF_CNT -> Just #const AF_CNT
-#endif
-#ifdef Pseudo_AF_RTIP
-    Just Pseudo_AF_RTIP -> Just #const Pseudo_AF_RTIP
-#endif
-#ifdef Pseudo_AF_PIP
-    Just Pseudo_AF_PIP -> Just #const Pseudo_AF_PIP
-#endif
-#ifdef AF_SIP
-    Just AF_SIP -> Just #const AF_SIP
-#endif
-#ifdef AF_ISDN
-    Just AF_ISDN -> Just #const AF_ISDN
-#endif
-#ifdef Pseudo_AF_KEY
-    Just Pseudo_AF_KEY -> Just #const Pseudo_AF_KEY
-#endif
-#ifdef AF_NATM
-    Just AF_NATM -> Just #const AF_NATM
-#endif
-#ifdef AF_ARP
-    Just AF_ARP -> Just #const AF_ARP
-#endif
-#ifdef Pseudo_AF_HDRCMPLT
-    Just Pseudo_AF_HDRCMPLT -> Just #const Pseudo_AF_HDRCMPLT
-#endif
-#ifdef AF_ENCAP
-    Just AF_ENCAP -> Just #const AF_ENCAP
-#endif
-#ifdef AF_LINK
-    Just AF_LINK -> Just #const AF_LINK
-#endif
-#ifdef AF_RAW
-    Just AF_RAW -> Just #const AF_RAW
-#endif
-#ifdef AF_RIF
-    Just AF_RIF -> Just #const AF_RIF
-#endif
-#ifdef AF_NETROM
-    Just AF_NETROM -> Just #const AF_NETROM
-#endif
-#ifdef AF_BRIDGE
-    Just AF_BRIDGE -> Just #const AF_BRIDGE
-#endif
-#ifdef AF_ATMPVC
-    Just AF_ATMPVC -> Just #const AF_ATMPVC
-#endif
-#ifdef AF_ROSE
-    Just AF_ROSE -> Just #const AF_ROSE
-#endif
-#ifdef AF_NETBEUI
-    Just AF_NETBEUI -> Just #const AF_NETBEUI
-#endif
-#ifdef AF_SECURITY
-    Just AF_SECURITY -> Just #const AF_SECURITY
-#endif
-#ifdef AF_PACKET
-    Just AF_PACKET -> Just #const AF_PACKET
-#endif
-#ifdef AF_ASH
-    Just AF_ASH -> Just #const AF_ASH
-#endif
-#ifdef AF_ECONET
-    Just AF_ECONET -> Just #const AF_ECONET
-#endif
-#ifdef AF_ATMSVC
-    Just AF_ATMSVC -> Just #const AF_ATMSVC
-#endif
-#ifdef AF_IRDA
-    Just AF_IRDA -> Just #const AF_IRDA
-#endif
-#ifdef AF_PPPOX
-    Just AF_PPPOX -> Just #const AF_PPPOX
-#endif
-#ifdef AF_WANPIPE
-    Just AF_WANPIPE -> Just #const AF_WANPIPE
-#endif
-#ifdef AF_BLUETOOTH
-    Just AF_BLUETOOTH -> Just #const AF_BLUETOOTH
-#endif
-    _ -> Nothing
-
---------- ----------
-
-unpackFamily :: CInt -> Family
-unpackFamily f = case f of
-        (#const AF_UNSPEC) -> AF_UNSPEC
-#ifdef AF_UNIX
-        (#const AF_UNIX) -> AF_UNIX
-#endif
-#ifdef AF_INET
-        (#const AF_INET) -> AF_INET
-#endif
-#ifdef AF_INET6
-        (#const AF_INET6) -> AF_INET6
-#endif
-#ifdef AF_IMPLINK
-        (#const AF_IMPLINK) -> AF_IMPLINK
-#endif
-#ifdef AF_PUP
-        (#const AF_PUP) -> AF_PUP
-#endif
-#ifdef AF_CHAOS
-        (#const AF_CHAOS) -> AF_CHAOS
-#endif
-#ifdef AF_NS
-        (#const AF_NS) -> AF_NS
-#endif
-#ifdef AF_NBS
-        (#const AF_NBS) -> AF_NBS
-#endif
-#ifdef AF_ECMA
-        (#const AF_ECMA) -> AF_ECMA
-#endif
-#ifdef AF_DATAKIT
-        (#const AF_DATAKIT) -> AF_DATAKIT
-#endif
-#ifdef AF_CCITT
-        (#const AF_CCITT) -> AF_CCITT
-#endif
-#ifdef AF_SNA
-        (#const AF_SNA) -> AF_SNA
-#endif
-#ifdef AF_DECnet
-        (#const AF_DECnet) -> AF_DECnet
-#endif
-#ifdef AF_DLI
-        (#const AF_DLI) -> AF_DLI
-#endif
-#ifdef AF_LAT
-        (#const AF_LAT) -> AF_LAT
-#endif
-#ifdef AF_HYLINK
-        (#const AF_HYLINK) -> AF_HYLINK
-#endif
-#ifdef AF_APPLETALK
-        (#const AF_APPLETALK) -> AF_APPLETALK
-#endif
-#ifdef AF_ROUTE
-        (#const AF_ROUTE) -> AF_ROUTE
-#endif
-#ifdef AF_NETBIOS
-        (#const AF_NETBIOS) -> AF_NETBIOS
-#endif
-#ifdef AF_NIT
-        (#const AF_NIT) -> AF_NIT
-#endif
-#ifdef AF_802
-        (#const AF_802) -> AF_802
-#endif
-#ifdef AF_ISO
-        (#const AF_ISO) -> AF_ISO
-#endif
-#ifdef AF_OSI
-# if (!defined(AF_ISO)) || (defined(AF_ISO) && (AF_ISO != AF_OSI))
-        (#const AF_OSI) -> AF_OSI
-# endif
-#endif
-#ifdef AF_NETMAN
-        (#const AF_NETMAN) -> AF_NETMAN
-#endif
-#ifdef AF_X25
-        (#const AF_X25) -> AF_X25
-#endif
-#ifdef AF_AX25
-        (#const AF_AX25) -> AF_AX25
-#endif
-#ifdef AF_OSINET
-        (#const AF_OSINET) -> AF_OSINET
-#endif
-#ifdef AF_GOSSIP
-        (#const AF_GOSSIP) -> AF_GOSSIP
-#endif
-#if defined(AF_IPX) && (!defined(AF_NS) || AF_NS != AF_IPX)
-        (#const AF_IPX) -> AF_IPX
-#endif
-#ifdef Pseudo_AF_XTP
-        (#const Pseudo_AF_XTP) -> Pseudo_AF_XTP
-#endif
-#ifdef AF_CTF
-        (#const AF_CTF) -> AF_CTF
-#endif
-#ifdef AF_WAN
-        (#const AF_WAN) -> AF_WAN
-#endif
-#ifdef AF_SDL
-        (#const AF_SDL) -> AF_SDL
-#endif
-#ifdef AF_NETWARE
-        (#const AF_NETWARE) -> AF_NETWARE       
-#endif
-#ifdef AF_NDD
-        (#const AF_NDD) -> AF_NDD               
-#endif
-#ifdef AF_INTF
-        (#const AF_INTF) -> AF_INTF
-#endif
-#ifdef AF_COIP
-        (#const AF_COIP) -> AF_COIP
-#endif
-#ifdef AF_CNT
-        (#const AF_CNT) -> AF_CNT
-#endif
-#ifdef Pseudo_AF_RTIP
-        (#const Pseudo_AF_RTIP) -> Pseudo_AF_RTIP
-#endif
-#ifdef Pseudo_AF_PIP
-        (#const Pseudo_AF_PIP) -> Pseudo_AF_PIP
-#endif
-#ifdef AF_SIP
-        (#const AF_SIP) -> AF_SIP
-#endif
-#ifdef AF_ISDN
-        (#const AF_ISDN) -> AF_ISDN
-#endif
-#ifdef Pseudo_AF_KEY
-        (#const Pseudo_AF_KEY) -> Pseudo_AF_KEY
-#endif
-#ifdef AF_NATM
-        (#const AF_NATM) -> AF_NATM
-#endif
-#ifdef AF_ARP
-        (#const AF_ARP) -> AF_ARP
-#endif
-#ifdef Pseudo_AF_HDRCMPLT
-        (#const Pseudo_AF_HDRCMPLT) -> Pseudo_AF_HDRCMPLT
-#endif
-#ifdef AF_ENCAP
-        (#const AF_ENCAP) -> AF_ENCAP 
-#endif
-#ifdef AF_LINK
-        (#const AF_LINK) -> AF_LINK
-#endif
-#ifdef AF_RAW
-        (#const AF_RAW) -> AF_RAW
-#endif
-#ifdef AF_RIF
-        (#const AF_RIF) -> AF_RIF
-#endif
-#ifdef AF_NETROM
-        (#const AF_NETROM) -> AF_NETROM
-#endif
-#ifdef AF_BRIDGE
-        (#const AF_BRIDGE) -> AF_BRIDGE
-#endif
-#ifdef AF_ATMPVC
-        (#const AF_ATMPVC) -> AF_ATMPVC
-#endif
-#ifdef AF_ROSE
-        (#const AF_ROSE) -> AF_ROSE
-#endif
-#ifdef AF_NETBEUI
-        (#const AF_NETBEUI) -> AF_NETBEUI
-#endif
-#ifdef AF_SECURITY
-        (#const AF_SECURITY) -> AF_SECURITY
-#endif
-#ifdef AF_PACKET
-        (#const AF_PACKET) -> AF_PACKET
-#endif
-#ifdef AF_ASH
-        (#const AF_ASH) -> AF_ASH
-#endif
-#ifdef AF_ECONET
-        (#const AF_ECONET) -> AF_ECONET
-#endif
-#ifdef AF_ATMSVC
-        (#const AF_ATMSVC) -> AF_ATMSVC
-#endif
-#ifdef AF_IRDA
-        (#const AF_IRDA) -> AF_IRDA
-#endif
-#ifdef AF_PPPOX
-        (#const AF_PPPOX) -> AF_PPPOX
-#endif
-#ifdef AF_WANPIPE
-        (#const AF_WANPIPE) -> AF_WANPIPE
-#endif
-#ifdef AF_BLUETOOTH
-        (#const AF_BLUETOOTH) -> AF_BLUETOOTH
-#endif
-        unknown -> error ("Network.Socket.unpackFamily: unknown address " ++
-                          "family " ++ show unknown)
-
--- Socket Types.
-
--- | Socket Types.
---
--- The existence of a constructor does not necessarily imply that that
--- socket type is supported on your system: see 'isSupportedSocketType'.
-data SocketType
-        = NoSocketType -- ^ 0, used in getAddrInfo hints, for example
-        | Stream -- ^ SOCK_STREAM
-        | Datagram -- ^ SOCK_DGRAM
-        | Raw -- ^ SOCK_RAW
-        | RDM -- ^ SOCK_RDM
-        | SeqPacket -- ^ SOCK_SEQPACKET
-        deriving (Eq, Ord, Read, Show, Typeable)
-
--- | Does the SOCK_ constant corresponding to the given SocketType exist on
--- this system?
-isSupportedSocketType :: SocketType -> Bool
-isSupportedSocketType = isJust . packSocketType'
-
--- | Find the SOCK_ constant corresponding to the SocketType value.
-packSocketType' :: SocketType -> Maybe CInt
-packSocketType' stype = case Just stype of
-    -- the Just above is to disable GHC's overlapping pattern
-    -- detection: see comments for packSocketOption
-    Just NoSocketType -> Just 0
-#ifdef SOCK_STREAM
-    Just Stream -> Just #const SOCK_STREAM
-#endif
-#ifdef SOCK_DGRAM
-    Just Datagram -> Just #const SOCK_DGRAM
-#endif
-#ifdef SOCK_RAW
-    Just Raw -> Just #const SOCK_RAW
-#endif
-#ifdef SOCK_RDM
-    Just RDM -> Just #const SOCK_RDM
-#endif
-#ifdef SOCK_SEQPACKET
-    Just SeqPacket -> Just #const SOCK_SEQPACKET
-#endif
-    _ -> Nothing
-
-packSocketType :: SocketType -> CInt
-packSocketType stype = fromMaybe (error errMsg) (packSocketType' stype)
-  where
-    errMsg = concat ["Network.Socket.packSocketType: ",
-                     "socket type ", show stype, " unsupported on this system"]
-
--- | Try packSocketType' on the SocketType, if it fails throw an error with
--- message starting "Network.Socket." ++ the String parameter
-packSocketTypeOrThrow :: String -> SocketType -> IO CInt
-packSocketTypeOrThrow caller stype = maybe err return (packSocketType' stype)
- where
-  err = ioError . userError . concat $ ["Network.Socket.", caller, ": ",
-    "socket type ", show stype, " unsupported on this system"]
-
-
-unpackSocketType:: CInt -> Maybe SocketType
-unpackSocketType t = case t of
-        0 -> Just NoSocketType
-#ifdef SOCK_STREAM
-        (#const SOCK_STREAM) -> Just Stream
-#endif
-#ifdef SOCK_DGRAM
-        (#const SOCK_DGRAM) -> Just Datagram
-#endif
-#ifdef SOCK_RAW
-        (#const SOCK_RAW) -> Just Raw
-#endif
-#ifdef SOCK_RDM
-        (#const SOCK_RDM) -> Just RDM
-#endif
-#ifdef SOCK_SEQPACKET
-        (#const SOCK_SEQPACKET) -> Just SeqPacket
-#endif
-        _ -> Nothing
-
--- | Try unpackSocketType on the CInt, if it fails throw an error with
--- message starting "Network.Socket." ++ the String parameter
-unpackSocketType' :: String -> CInt -> IO SocketType
-unpackSocketType' caller ty = maybe err return (unpackSocketType ty)
- where
-  err = ioError . userError . concat $ ["Network.Socket.", caller, ": ",
-    "socket type ", show ty, " unsupported on this system"]
-
-
--- ---------------------------------------------------------------------------
 -- Utility Functions
 
-aNY_PORT :: PortNumber 
+aNY_PORT :: PortNumber
 aNY_PORT = 0
 
 -- | The IPv4 wild card address.
@@ -1614,6 +1043,8 @@
 iNADDR_ANY :: HostAddress
 iNADDR_ANY = htonl (#const INADDR_ANY)
 
+foreign import CALLCONV unsafe "htonl" htonl :: Word32 -> Word32
+
 #if defined(IPV6_SOCKET_SUPPORT)
 -- | The IPv6 wild card address.
 
@@ -1632,12 +1063,15 @@
 sCM_RIGHTS = #const SCM_RIGHTS
 #endif
 
+-- | This is the value of SOMAXCONN, typically 128.
+-- 128 is good enough for normal network servers but
+-- is too small for high performance servers.
 maxListenQueue :: Int
 maxListenQueue = sOMAXCONN
 
 -- -----------------------------------------------------------------------------
 
-data ShutdownCmd 
+data ShutdownCmd
  = ShutdownReceive
  | ShutdownSend
  | ShutdownBoth
@@ -1678,7 +1112,7 @@
 isConnected :: Socket -> IO Bool
 isConnected (MkSocket _ _ _ _ status) = do
     value <- readMVar status
-    return (value == Connected) 
+    return (value == Connected)
 
 -- -----------------------------------------------------------------------------
 -- Socket Predicates
@@ -1686,12 +1120,12 @@
 isBound :: Socket -> IO Bool
 isBound (MkSocket _ _ _ _ status) = do
     value <- readMVar status
-    return (value == Bound)     
+    return (value == Bound)
 
 isListening :: Socket -> IO Bool
 isListening (MkSocket _ _ _  _ status) = do
     value <- readMVar status
-    return (value == Listening) 
+    return (value == Listening)
 
 isReadable  :: Socket -> IO Bool
 isReadable (MkSocket _ _ _ _ status) = do
@@ -1712,7 +1146,7 @@
 isAcceptable (MkSocket _ _ _ _ status) = do
     value <- readMVar status
     return (value == Connected || value == Listening)
-    
+
 -- -----------------------------------------------------------------------------
 -- Internet address manipulation routines:
 
@@ -1751,8 +1185,6 @@
     h <- fdToHandle' (fromIntegral fd) (Just System.Posix.Internals.Stream) True (show s) mode True{-bin-}
 # elif __GLASGOW_HASKELL__ && __GLASGOW_HASKELL__ < 608
     h <- openFd (fromIntegral fd) (Just System.Posix.Internals.Stream) True (show s) mode True{-bin-}
-# elif defined(__HUGS__)
-    h <- openFd (fromIntegral fd) True{-is a socket-} mode True{-bin-}
 # endif
     hSetBuffering h NoBuffering
     return (ConvertedToHandle, h)
@@ -1860,7 +1292,7 @@
         ai_canonname <- if ai_canonname_ptr == nullPtr
                         then return Nothing
                         else liftM Just $ peekCString ai_canonname_ptr
-                             
+
         socktype <- unpackSocketType' "AddrInfo.peek" ai_socktype
         return (AddrInfo
                 {
@@ -1950,7 +1382,7 @@
 --   [@AI_NUMERICHOST@] The 'HostName' argument /must/ be a numeric
 --     address in string form, and network name lookups will not be
 --     attempted.
--- 
+--
 -- /Note/: Although the following flags are required by RFC 3493, they
 -- may not have an effect on all platforms, because the underlying
 -- network stack may not support them.  To see whether a flag from the
@@ -1970,7 +1402,7 @@
 --
 --   [@AI_ALL@] If 'AI_ALL' is specified, return all matching IPv6 and
 --     IPv4 addresses.  Otherwise, this flag has no effect.
---     
+--
 -- You must provide a 'Just' value for at least one of the 'HostName'
 -- or 'ServiceName' arguments.  'HostName' can be either a numeric
 -- network address (dotted quad for IPv4, colon-separated hex for
@@ -2051,7 +1483,7 @@
 withCStringIf :: Bool -> Int -> (CSize -> CString -> IO a) -> IO a
 withCStringIf False _ f = f 0 nullPtr
 withCStringIf True n f = allocaBytes n (f (fromIntegral n))
-                    
+
 -- | Resolve an address to a host or service name.
 -- This function is protocol independent.
 --
@@ -2116,7 +1548,7 @@
             return (host, serv)
           _ -> do err <- gai_strerror ret
                   ioError (ioeSetErrorString
-                           (mkIOError NoSuchThing "getNameInfo" Nothing 
+                           (mkIOError NoSuchThing "getNameInfo" Nothing
                             Nothing) err)
 
 foreign import ccall safe "hsnet_getnameinfo"
@@ -2146,10 +1578,10 @@
   c_inet_addr :: Ptr CChar -> IO HostAddress
 
 foreign import CALLCONV unsafe "shutdown"
-  c_shutdown :: CInt -> CInt -> IO CInt 
+  c_shutdown :: CInt -> CInt -> IO CInt
 
 closeFd :: CInt -> IO ()
-closeFd fd = throwErrnoIfMinus1Retry_ "Network.Socket.close" $ c_close fd
+closeFd fd = throwSocketErrorIfMinus1_ "Network.Socket.close" $ c_close fd
 
 #if !defined(WITH_WINSOCK)
 foreign import ccall unsafe "close"
@@ -2163,7 +1595,7 @@
   c_socket :: CInt -> CInt -> CInt -> IO CInt
 foreign import CALLCONV unsafe "bind"
   c_bind :: CInt -> Ptr SockAddr -> CInt{-CSockLen???-} -> IO CInt
-foreign import CALLCONV unsafe "connect"
+foreign import CALLCONV SAFE_ON_WIN "connect"
   c_connect :: CInt -> Ptr SockAddr -> CInt{-CSockLen???-} -> IO CInt
 foreign import CALLCONV unsafe "accept"
   c_accept :: CInt -> Ptr SockAddr -> Ptr CInt{-CSockLen???-} -> IO CInt
@@ -2178,7 +1610,7 @@
 foreign import CALLCONV safe "accept"
   c_accept_safe :: CInt -> Ptr SockAddr -> Ptr CInt{-CSockLen???-} -> IO CInt
 
-foreign import ccall "rtsSupportsBoundThreads" threaded :: Bool
+foreign import ccall unsafe "rtsSupportsBoundThreads" threaded :: Bool
 #endif
 
 foreign import CALLCONV unsafe "send"
diff --git a/Network/Socket/ByteString.hsc b/Network/Socket/ByteString.hsc
--- a/Network/Socket/ByteString.hsc
+++ b/Network/Socket/ByteString.hsc
@@ -60,6 +60,8 @@
 import qualified Data.ByteString as B
 
 import Network.Socket.ByteString.Internal
+import Network.Socket.Internal
+import Network.Socket.Types
 
 #if !defined(mingw32_HOST_OS)
 import Control.Monad (zipWithM_)
@@ -73,8 +75,6 @@
 import Foreign.Marshal.Utils (with)
 import Foreign.Ptr (plusPtr)
 import Foreign.Storable (Storable(..))
-import Network.Socket.Internal (throwSocketErrorIfMinus1RetryMayBlock,
-                                withSockAddr)
 
 import Network.Socket.ByteString.IOVec (IOVec(..))
 import Network.Socket.ByteString.MsgHdr (MsgHdr(..))
@@ -108,7 +108,7 @@
 send :: Socket      -- ^ Connected socket
      -> ByteString  -- ^ Data to send
      -> IO Int      -- ^ Number of bytes sent
-send (MkSocket s _ _ _ _) xs =
+send sock@(MkSocket s _ _ _ _) xs =
     unsafeUseAsCStringLen xs $ \(str, len) ->
     liftM fromIntegral $
 #if defined(__GLASGOW_HASKELL__) && defined(mingw32_HOST_OS)
@@ -120,10 +120,7 @@
         (fromIntegral s) True str 0 (fromIntegral len)
 #  endif
 #else
-#  if !defined(__HUGS__)
-        throwSocketErrorIfMinus1RetryMayBlock "send"
-        (threadWaitWrite (fromIntegral s)) $
-#  endif
+        throwSocketErrorWaitWrite sock "send" $
         c_send s str (fromIntegral len) 0
 #endif
 
@@ -202,9 +199,9 @@
   where
     sendManyInner =
       liftM fromIntegral . withIOVec cs $ \(iovsPtr, iovsLen) ->
-          throwSocketErrorIfMinus1RetryMayBlock "writev"
-              (threadWaitWrite (fromIntegral fd)) $
-              c_writev (fromIntegral fd) iovsPtr (fromIntegral iovsLen)
+          throwSocketErrorWaitWrite sock "writev" $
+              c_writev (fromIntegral fd) iovsPtr
+              (fromIntegral (min iovsLen (#const IOV_MAX)))
 #else
 sendMany sock = sendAll sock . B.concat
 #endif
@@ -231,8 +228,7 @@
                 addrPtr (fromIntegral addrSize)
                 iovsPtr (fromIntegral iovsLen)
           with msgHdr $ \msgHdrPtr ->
-            throwSocketErrorIfMinus1RetryMayBlock "sendmsg"
-              (threadWaitWrite (fromIntegral fd)) $
+            throwSocketErrorWaitWrite sock "sendmsg" $
               c_sendmsg (fromIntegral fd) msgHdrPtr 0
 #else
 sendManyTo sock cs = sendAllTo sock (B.concat cs)
@@ -255,12 +251,12 @@
 recv :: Socket         -- ^ Connected socket
      -> Int            -- ^ Maximum number of bytes to receive
      -> IO ByteString  -- ^ Data received
-recv (MkSocket s _ _ _ _) nbytes
+recv sock nbytes
     | nbytes < 0 = ioError (mkInvalidRecvArgError "Network.Socket.ByteString.recv")
-    | otherwise  = createAndTrim nbytes $ recvInner s nbytes
+    | otherwise  = createAndTrim nbytes $ recvInner sock nbytes
 
-recvInner :: CInt -> Int -> Ptr Word8 -> IO Int
-recvInner s nbytes ptr =
+recvInner :: Socket -> Int -> Ptr Word8 -> IO Int
+recvInner sock nbytes ptr =
     fmap fromIntegral $
 #if defined(__GLASGOW_HASKELL__) && defined(mingw32_HOST_OS)
 #  if __GLASGOW_HASKELL__ >= 611
@@ -270,12 +266,11 @@
         True (castPtr ptr) 0 (fromIntegral nbytes)
 #  endif
 #else
-#  if !defined(__HUGS__)
-        throwSocketErrorIfMinus1RetryMayBlock "recv"
-        (threadWaitRead (fromIntegral s)) $
-#  endif
+        throwSocketErrorWaitRead sock "recv" $
         c_recv s (castPtr ptr) (fromIntegral nbytes) 0
 #endif
+  where
+    s = sockFd sock
 
 -- | Receive data from the socket.  The socket need not be in a
 -- connected state.  Returns @(bytes, address)@ where @bytes@ is a
diff --git a/Network/Socket/ByteString/IOVec.hsc b/Network/Socket/ByteString/IOVec.hsc
--- a/Network/Socket/ByteString/IOVec.hsc
+++ b/Network/Socket/ByteString/IOVec.hsc
@@ -1,3 +1,5 @@
+{-# OPTIONS_GHC -funbox-strict-fields #-}
+
 -- | Support module for the POSIX writev system call.
 module Network.Socket.ByteString.IOVec
     ( IOVec(..)
@@ -10,8 +12,8 @@
 #include <sys/uio.h>
 
 data IOVec = IOVec
-    { iovBase :: Ptr CChar
-    , iovLen  :: CSize
+    { iovBase :: !(Ptr CChar)
+    , iovLen  :: !CSize
     }
 
 instance Storable IOVec where
diff --git a/Network/Socket/ByteString/Internal.hs b/Network/Socket/ByteString/Internal.hs
--- a/Network/Socket/ByteString/Internal.hs
+++ b/Network/Socket/ByteString/Internal.hs
@@ -40,8 +40,6 @@
 # else
 import GHC.IO.Exception (IOErrorType(..))
 # endif
-#elif __HUGS__
-import Hugs.Prelude (IOErrorType(..))
 #endif
 
 mkInvalidRecvArgError :: String -> IOError
diff --git a/Network/Socket/ByteString/Lazy.hsc b/Network/Socket/ByteString/Lazy.hsc
--- a/Network/Socket/ByteString/Lazy.hsc
+++ b/Network/Socket/ByteString/Lazy.hsc
@@ -53,7 +53,7 @@
 import Foreign.Storable (Storable(..))
 import Network.Socket.ByteString.IOVec (IOVec(IOVec))
 import Network.Socket.ByteString.Internal (c_writev)
-import Network.Socket.Internal (throwSocketErrorIfMinus1RetryMayBlock)
+import Network.Socket.Internal
 
 import qualified Data.ByteString.Lazy as L
 
@@ -80,15 +80,12 @@
 send :: Socket      -- ^ Connected socket
      -> ByteString  -- ^ Data to send
      -> IO Int64    -- ^ Number of bytes sent
-send (MkSocket fd _ _ _ _) s = do
+send sock@(MkSocket fd _ _ _ _) s = do
   let cs  = take maxNumChunks (L.toChunks s)
       len = length cs
   liftM fromIntegral . allocaArray len $ \ptr ->
     withPokes cs ptr $ \niovs ->
-#  if !defined(__HUGS__)
-      throwSocketErrorIfMinus1RetryMayBlock "writev"
-        (threadWaitWrite (fromIntegral fd)) $
-#  endif
+      throwSocketErrorWaitWrite sock "writev" $
         c_writev (fromIntegral fd) ptr niovs
   where
     withPokes ss p f = loop ss p 0 0
diff --git a/Network/Socket/ByteString/MsgHdr.hsc b/Network/Socket/ByteString/MsgHdr.hsc
--- a/Network/Socket/ByteString/MsgHdr.hsc
+++ b/Network/Socket/ByteString/MsgHdr.hsc
@@ -1,4 +1,5 @@
 {-# LANGUAGE CPP #-}
+{-# OPTIONS_GHC -funbox-strict-fields #-}
 
 -- | Support module for the POSIX 'sendmsg' system call.
 module Network.Socket.ByteString.MsgHdr
@@ -8,7 +9,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 
-import Foreign.C.Types (CInt, CSize)
+import Foreign.C.Types (CInt, CSize, CUInt)
 import Foreign.Ptr (Ptr)
 import Foreign.Storable (Storable(..))
 import Network.Socket (SockAddr)
@@ -19,10 +20,10 @@
 -- We don't use msg_control, msg_controllen, and msg_flags as these
 -- don't exist on OpenSolaris.
 data MsgHdr = MsgHdr
-    { msgName    :: Ptr SockAddr
-    , msgNameLen :: CSize
-    , msgIov     :: Ptr IOVec
-    , msgIovLen  :: CSize
+    { msgName    :: !(Ptr SockAddr)
+    , msgNameLen :: !CUInt
+    , msgIov     :: !(Ptr IOVec)
+    , msgIovLen  :: !CSize
     }
 
 instance Storable MsgHdr where
diff --git a/Network/Socket/Internal.hsc b/Network/Socket/Internal.hsc
--- a/Network/Socket/Internal.hsc
+++ b/Network/Socket/Internal.hsc
@@ -1,4 +1,5 @@
-{-# LANGUAGE CPP, FlexibleInstances, ForeignFunctionInterface #-}
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE ForeignFunctionInterface #-}
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 -----------------------------------------------------------------------------
 -- |
@@ -46,12 +47,20 @@
     , c_getLastError
 #endif
     , throwSocketError
+    , throwSocketErrorCode
 
     -- * Guards for socket operations that may fail
     , throwSocketErrorIfMinus1_
     , throwSocketErrorIfMinus1Retry
     , throwSocketErrorIfMinus1RetryMayBlock
 
+    -- ** Guards that wait and retry if the operation would block
+    -- | These guards are based on 'throwSocketErrorIfMinus1RetryMayBlock'.
+    -- They wait for socket readiness if the action fails with @EWOULDBLOCK@
+    -- or similar.
+    , throwSocketErrorWaitRead
+    , throwSocketErrorWaitWrite
+
     -- * Initialization
     , withSocketsDo
 
@@ -63,7 +72,8 @@
 import Data.Word ( Word8, Word16, Word32 )
 import Data.Typeable (Typeable)
 import Foreign.C.Error (throwErrno, throwErrnoIfMinus1Retry,
-                        throwErrnoIfMinus1RetryMayBlock, throwErrnoIfMinus1_)
+                        throwErrnoIfMinus1RetryMayBlock, throwErrnoIfMinus1_,
+                        Errno(..), errnoToIOError)
 import Foreign.C.String ( castCharToCChar, peekCString )
 #if __GLASGOW_HASKELL__ >= 703
 import Foreign.C.Types ( CInt(..), CSize(..) )
@@ -74,315 +84,22 @@
 import Foreign.Marshal.Array ( pokeArray, pokeArray0 )
 import Foreign.Ptr ( Ptr, castPtr, plusPtr )
 import Foreign.Storable ( Storable(..) )
+import GHC.Conc (threadWaitRead, threadWaitWrite)
 
 #if defined(HAVE_WINSOCK2_H) && !defined(cygwin32_HOST_OS)
 import Control.Exception ( finally )
 #  if __GLASGOW_HASKELL__
+#    if __GLASGOW_HASKELL__ >= 707
+import GHC.IO.Exception ( IOErrorType(..) )
+#    else
 import GHC.IOBase ( IOErrorType(..) )
+#    endif
 #  endif
 import Foreign.C.Types ( CChar )
 import System.IO.Error ( ioeSetErrorString, mkIOError )
 #endif
 
-------------------------------------------------------------------------
-
--- | Network byte order.
-type HostAddress = Word32
-
-#if defined(IPV6_SOCKET_SUPPORT)
--- | Host byte order.
-type HostAddress6 = (Word32, Word32, Word32, Word32)
-
--- The peek32 and poke32 functions work around the fact that the RFCs
--- don't require 32-bit-wide address fields to be present.  We can
--- only portably rely on an 8-bit field, s6_addr.
-
-s6_addr_offset :: Int
-s6_addr_offset = (#offset struct in6_addr, s6_addr)
-
-peek32 :: Ptr a -> Int -> IO Word32
-peek32 p i0 = do
-    let i' = i0 * 4
-        peekByte n = peekByteOff p (s6_addr_offset + i' + n) :: IO Word8
-        a `sl` i = fromIntegral a `shiftL` i
-    a0 <- peekByte 0
-    a1 <- peekByte 1
-    a2 <- peekByte 2
-    a3 <- peekByte 3
-    return ((a0 `sl` 24) .|. (a1 `sl` 16) .|. (a2 `sl` 8) .|. (a3 `sl` 0))
-
-poke32 :: Ptr a -> Int -> Word32 -> IO ()
-poke32 p i0 a = do
-    let i' = i0 * 4
-        pokeByte n = pokeByteOff p (s6_addr_offset + i' + n)
-        x `sr` i = fromIntegral (x `shiftR` i) :: Word8
-    pokeByte 0 (a `sr` 24)
-    pokeByte 1 (a `sr` 16)
-    pokeByte 2 (a `sr`  8)
-    pokeByte 3 (a `sr`  0)
-
-instance Storable HostAddress6 where
-    sizeOf _    = (#const sizeof(struct in6_addr))
-    alignment _ = alignment (undefined :: CInt)
-
-    peek p = do
-        a <- peek32 p 0
-        b <- peek32 p 1
-        c <- peek32 p 2
-        d <- peek32 p 3
-        return (a, b, c, d)
-
-    poke p (a, b, c, d) = do
-        poke32 p 0 a
-        poke32 p 1 b
-        poke32 p 2 c
-        poke32 p 3 d
-#endif
-
-------------------------------------------------------------------------
--- Port Numbers
---
--- newtyped to prevent accidental use of sane-looking
--- port numbers that haven't actually been converted to
--- network-byte-order first.
---
-
-newtype PortNumber = PortNum Word16 deriving (Eq, Ord, Typeable)
-
-------------------------------------------------------------------------
--- Socket addresses
-
--- The scheme used for addressing sockets is somewhat quirky. The
--- calls in the BSD socket API that need to know the socket address
--- all operate in terms of struct sockaddr, a `virtual' type of
--- socket address.
-
--- The Internet family of sockets are addressed as struct sockaddr_in,
--- so when calling functions that operate on struct sockaddr, we have
--- to type cast the Internet socket address into a struct sockaddr.
--- Instances of the structure for different families might *not* be
--- the same size. Same casting is required of other families of
--- sockets such as Xerox NS. Similarly for Unix domain sockets.
-
--- To represent these socket addresses in Haskell-land, we do what BSD
--- didn't do, and use a union/algebraic type for the different
--- families. Currently only Unix domain sockets and the Internet
--- families are supported.
-
-#if defined(IPV6_SOCKET_SUPPORT)
-type FlowInfo = Word32
-type ScopeID = Word32
-#endif
-
-data SockAddr       -- C Names
-  = SockAddrInet
-    PortNumber  -- sin_port  (network byte order)
-    HostAddress -- sin_addr  (ditto)
-#if defined(IPV6_SOCKET_SUPPORT)
-  | SockAddrInet6
-        PortNumber      -- sin6_port (network byte order)
-        FlowInfo        -- sin6_flowinfo (ditto)
-        HostAddress6    -- sin6_addr (ditto)
-        ScopeID         -- sin6_scope_id (ditto)
-#endif
-#if defined(DOMAIN_SOCKET_SUPPORT)
-  | SockAddrUnix
-        String          -- sun_path
-#endif
-  deriving (Eq, Ord, Typeable)
-
-#if defined(WITH_WINSOCK) || defined(cygwin32_HOST_OS)
-type CSaFamily = (#type unsigned short)
-#elif defined(darwin_HOST_OS)
-type CSaFamily = (#type u_char)
-#else
-type CSaFamily = (#type sa_family_t)
-#endif
-
--- | Computes the storage requirements (in bytes) of the given
--- 'SockAddr'.  This function differs from 'Foreign.Storable.sizeOf'
--- in that the value of the argument /is/ used.
-sizeOfSockAddr :: SockAddr -> Int
-#if defined(DOMAIN_SOCKET_SUPPORT)
-sizeOfSockAddr (SockAddrUnix path) =
-    case path of
-        '\0':_ -> (#const sizeof(sa_family_t)) + length path
-        _      -> #const sizeof(struct sockaddr_un)
-#endif
-sizeOfSockAddr (SockAddrInet _ _) = #const sizeof(struct sockaddr_in)
-#if defined(IPV6_SOCKET_SUPPORT)
-sizeOfSockAddr (SockAddrInet6 _ _ _ _) = #const sizeof(struct sockaddr_in6)
-#endif
-
--- | Computes the storage requirements (in bytes) required for a
--- 'SockAddr' with the given 'Family'.
-sizeOfSockAddrByFamily :: Family -> Int
-#if defined(DOMAIN_SOCKET_SUPPORT)
-sizeOfSockAddrByFamily AF_UNIX  = #const sizeof(struct sockaddr_un)
-#endif
-#if defined(IPV6_SOCKET_SUPPORT)
-sizeOfSockAddrByFamily AF_INET6 = #const sizeof(struct sockaddr_in6)
-#endif
-sizeOfSockAddrByFamily AF_INET  = #const sizeof(struct sockaddr_in)
-
--- | Use a 'SockAddr' with a function requiring a pointer to a
--- 'SockAddr' and the length of that 'SockAddr'.
-withSockAddr :: SockAddr -> (Ptr SockAddr -> Int -> IO a) -> IO a
-withSockAddr addr f = do
-    let sz = sizeOfSockAddr addr
-    allocaBytes sz $ \p -> pokeSockAddr p addr >> f (castPtr p) sz
-
--- | Create a new 'SockAddr' for use with a function requiring a
--- pointer to a 'SockAddr' and the length of that 'SockAddr'.
-withNewSockAddr :: Family -> (Ptr SockAddr -> Int -> IO a) -> IO a
-withNewSockAddr family f = do
-    let sz = sizeOfSockAddrByFamily family
-    allocaBytes sz $ \ptr -> f ptr sz
-
--- We can't write an instance of 'Storable' for 'SockAddr' because
--- @sockaddr@ is a sum type of variable size but
--- 'Foreign.Storable.sizeOf' is required to be constant.
-
--- Note that on Darwin, the sockaddr structure must be zeroed before
--- use.
-
--- | Write the given 'SockAddr' to the given memory location.
-pokeSockAddr :: Ptr a -> SockAddr -> IO ()
-#if defined(DOMAIN_SOCKET_SUPPORT)
-pokeSockAddr p (SockAddrUnix path) = do
-#if defined(darwin_HOST_OS)
-    zeroMemory p (#const sizeof(struct sockaddr_un))
-#endif
-#if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
-    (#poke struct sockaddr_un, sun_len) p ((#const sizeof(struct sockaddr_un)) :: Word8)
-#endif
-    (#poke struct sockaddr_un, sun_family) p ((#const AF_UNIX) :: CSaFamily)
-    let pathC = map castCharToCChar path
-        poker = case path of ('\0':_) -> pokeArray; _ -> pokeArray0 0
-    poker ((#ptr struct sockaddr_un, sun_path) p) pathC
-#endif
-pokeSockAddr p (SockAddrInet (PortNum port) addr) = do
-#if defined(darwin_HOST_OS)
-    zeroMemory p (#const sizeof(struct sockaddr_in))
-#endif
-#if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
-    (#poke struct sockaddr_in, sin_len) p ((#const sizeof(struct sockaddr_in)) :: Word8)
-#endif
-    (#poke struct sockaddr_in, sin_family) p ((#const AF_INET) :: CSaFamily)
-    (#poke struct sockaddr_in, sin_port) p port
-    (#poke struct sockaddr_in, sin_addr) p addr
-#if defined(IPV6_SOCKET_SUPPORT)
-pokeSockAddr p (SockAddrInet6 (PortNum port) flow addr scope) = do
-#if defined(darwin_HOST_OS)
-    zeroMemory p (#const sizeof(struct sockaddr_in6))
-#endif
-#if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
-    (#poke struct sockaddr_in6, sin6_len) p ((#const sizeof(struct sockaddr_in6)) :: Word8)
-#endif
-    (#poke struct sockaddr_in6, sin6_family) p ((#const AF_INET6) :: CSaFamily)
-    (#poke struct sockaddr_in6, sin6_port) p port
-    (#poke struct sockaddr_in6, sin6_flowinfo) p flow
-    (#poke struct sockaddr_in6, sin6_addr) p addr
-    (#poke struct sockaddr_in6, sin6_scope_id) p scope
-#endif
-
--- | Read a 'SockAddr' from the given memory location.
-peekSockAddr :: Ptr SockAddr -> IO SockAddr
-peekSockAddr p = do
-  family <- (#peek struct sockaddr, sa_family) p
-  case family :: CSaFamily of
-#if defined(DOMAIN_SOCKET_SUPPORT)
-    (#const AF_UNIX) -> do
-        str <- peekCString ((#ptr struct sockaddr_un, sun_path) p)
-        return (SockAddrUnix str)
-#endif
-    (#const AF_INET) -> do
-        addr <- (#peek struct sockaddr_in, sin_addr) p
-        port <- (#peek struct sockaddr_in, sin_port) p
-        return (SockAddrInet (PortNum port) addr)
-#if defined(IPV6_SOCKET_SUPPORT)
-    (#const AF_INET6) -> do
-        port <- (#peek struct sockaddr_in6, sin6_port) p
-        flow <- (#peek struct sockaddr_in6, sin6_flowinfo) p
-        addr <- (#peek struct sockaddr_in6, sin6_addr) p
-        scope <- (#peek struct sockaddr_in6, sin6_scope_id) p
-        return (SockAddrInet6 (PortNum port) flow addr scope)
-#endif
-
-------------------------------------------------------------------------
--- Protocol Families.
-
--- | Address families.
---
--- A constructor being present here does not mean it is supported by the
--- operating system: see 'isSupportedFamily'.
-data Family
-    = AF_UNSPEC           -- unspecified
-    | AF_UNIX             -- local to host (pipes, portals
-    | AF_INET             -- internetwork: UDP, TCP, etc
-    | AF_INET6            -- Internet Protocol version 6
-    | AF_IMPLINK          -- arpanet imp addresses
-    | AF_PUP              -- pup protocols: e.g. BSP
-    | AF_CHAOS            -- mit CHAOS protocols
-    | AF_NS               -- XEROX NS protocols
-    | AF_NBS              -- nbs protocols
-    | AF_ECMA             -- european computer manufacturers
-    | AF_DATAKIT          -- datakit protocols
-    | AF_CCITT            -- CCITT protocols, X.25 etc
-    | AF_SNA              -- IBM SNA
-    | AF_DECnet           -- DECnet
-    | AF_DLI              -- Direct data link interface
-    | AF_LAT              -- LAT
-    | AF_HYLINK           -- NSC Hyperchannel
-    | AF_APPLETALK        -- Apple Talk
-    | AF_ROUTE            -- Internal Routing Protocol
-    | AF_NETBIOS          -- NetBios-style addresses
-    | AF_NIT              -- Network Interface Tap
-    | AF_802              -- IEEE 802.2, also ISO 8802
-    | AF_ISO              -- ISO protocols
-    | AF_OSI              -- umbrella of all families used by OSI
-    | AF_NETMAN           -- DNA Network Management
-    | AF_X25              -- CCITT X.25
-    | AF_AX25
-    | AF_OSINET           -- AFI
-    | AF_GOSSIP           -- US Government OSI
-    | AF_IPX              -- Novell Internet Protocol
-    | Pseudo_AF_XTP       -- eXpress Transfer Protocol (no AF)
-    | AF_CTF              -- Common Trace Facility
-    | AF_WAN              -- Wide Area Network protocols
-    | AF_SDL              -- SGI Data Link for DLPI
-    | AF_NETWARE
-    | AF_NDD
-    | AF_INTF             -- Debugging use only
-    | AF_COIP             -- connection-oriented IP, aka ST II
-    | AF_CNT              -- Computer Network Technology
-    | Pseudo_AF_RTIP      -- Help Identify RTIP packets
-    | Pseudo_AF_PIP       -- Help Identify PIP packets
-    | AF_SIP              -- Simple Internet Protocol
-    | AF_ISDN             -- Integrated Services Digital Network
-    | Pseudo_AF_KEY       -- Internal key-management function
-    | AF_NATM             -- native ATM access
-    | AF_ARP              -- (rev.) addr. res. prot. (RFC 826)
-    | Pseudo_AF_HDRCMPLT  -- Used by BPF to not rewrite hdrs in iface output
-    | AF_ENCAP
-    | AF_LINK             -- Link layer interface
-    | AF_RAW              -- Link layer interface
-    | AF_RIF              -- raw interface
-    | AF_NETROM           -- Amateur radio NetROM
-    | AF_BRIDGE           -- multiprotocol bridge
-    | AF_ATMPVC           -- ATM PVCs
-    | AF_ROSE             -- Amateur Radio X.25 PLP
-    | AF_NETBEUI          -- 802.2LLC
-    | AF_SECURITY         -- Security callback pseudo AF
-    | AF_PACKET           -- Packet family
-    | AF_ASH              -- Ash
-    | AF_ECONET           -- Acorn Econet
-    | AF_ATMSVC           -- ATM SVCs
-    | AF_IRDA             -- IRDA sockets
-    | AF_PPPOX            -- PPPoX sockets
-    | AF_WANPIPE          -- Wanpipe API sockets
-    | AF_BLUETOOTH        -- bluetooth sockets
-      deriving (Eq, Ord, Read, Show)
+import Network.Socket.Types
 
 -- ---------------------------------------------------------------------
 -- Guards for socket operations that may fail
@@ -391,6 +108,11 @@
 throwSocketError :: String  -- ^ textual description of the error location
                  -> IO a
 
+-- | Like 'throwSocketError', but the error code is supplied as an argument.
+--
+-- On Windows, do not use errno.  Use a system error code instead.
+throwSocketErrorCode :: String -> CInt -> IO a
+
 -- | Throw an 'IOError' corresponding to the current socket error if
 -- the IO action returns a result of @-1@.  Discards the result of the
 -- IO action after error handling.
@@ -439,6 +161,9 @@
 
 throwSocketError = throwErrno
 
+throwSocketErrorCode loc errno =
+    ioError (errnoToIOError loc (Errno errno) Nothing Nothing)
+
 #else
 
 throwSocketErrorIfMinus1RetryMayBlock name _ act
@@ -455,7 +180,7 @@
    then do
     rc   <- c_getLastError
     case rc of
-      10093 -> do -- WSANOTINITIALISED
+      #{const WSANOTINITIALISED} -> do
         withSocketsDo (return ())
         r <- act
         if (r == -1)
@@ -464,8 +189,7 @@
       _ -> throwSocketError name
    else return r
 
-throwSocketError name = do
-    rc <- c_getLastError
+throwSocketErrorCode name rc = do
     pstr <- c_getWSError rc
     str  <- peekCString pstr
 #  if __GLASGOW_HASKELL__
@@ -474,6 +198,9 @@
     ioError (userError (name ++ ": socket error - " ++ str))
 #  endif
 
+throwSocketError name =
+    c_getLastError >>= throwSocketErrorCode name
+
 foreign import CALLCONV unsafe "WSAGetLastError"
   c_getLastError :: IO CInt
 
@@ -484,9 +211,29 @@
 # else
 throwSocketErrorIfMinus1Retry = throwErrnoIfMinus1Retry
 throwSocketError = throwErrno
+throwSocketErrorCode loc errno =
+    ioError (errnoToIOError loc (Errno errno) Nothing Nothing)
 # endif
 #endif /* __GLASGOW_HASKELL */
 
+-- | Like 'throwSocketErrorIfMinus1Retry', but if the action fails with
+-- @EWOULDBLOCK@ or similar, wait for the socket to be read-ready,
+-- and try again.
+throwSocketErrorWaitRead :: (Eq a, Num a) => Socket -> String -> IO a -> IO a
+throwSocketErrorWaitRead sock name io =
+    throwSocketErrorIfMinus1RetryMayBlock name
+        (threadWaitRead $ fromIntegral $ sockFd sock)
+        io
+
+-- | Like 'throwSocketErrorIfMinus1Retry', but if the action fails with
+-- @EWOULDBLOCK@ or similar, wait for the socket to be write-ready,
+-- and try again.
+throwSocketErrorWaitWrite :: (Eq a, Num a) => Socket -> String -> IO a -> IO a
+throwSocketErrorWaitWrite sock name io =
+    throwSocketErrorIfMinus1RetryMayBlock name
+        (threadWaitWrite $ fromIntegral $ sockFd sock)
+        io
+
 -- ---------------------------------------------------------------------------
 -- WinSock support
 
@@ -514,12 +261,3 @@
 foreign import ccall unsafe "shutdownWinSock" shutdownWinSock :: IO ()
 
 #endif
-
-------------------------------------------------------------------------
--- Helper functions
-
-foreign import ccall unsafe "string.h" memset :: Ptr a -> CInt -> CSize -> IO ()
-
--- | Zero a structure.
-zeroMemory :: Ptr a -> CSize -> IO ()
-zeroMemory dest nbytes = memset dest 0 (fromIntegral nbytes)
diff --git a/Network/Socket/Types.hsc b/Network/Socket/Types.hsc
new file mode 100644
--- /dev/null
+++ b/Network/Socket/Types.hsc
@@ -0,0 +1,962 @@
+{-# LANGUAGE DeriveDataTypeable #-}
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE ForeignFunctionInterface #-}
+module Network.Socket.Types
+    (
+    -- * Socket
+      Socket(..)
+    , sockFd
+    , sockFamily
+    , sockType
+    , sockProtocol
+    , sockStatus
+    , SocketStatus(..)
+
+    -- * Socket types
+    , SocketType(..)
+    , isSupportedSocketType
+    , packSocketType
+    , packSocketType'
+    , packSocketTypeOrThrow
+    , unpackSocketType
+    , unpackSocketType'
+
+    -- * Family
+    , Family(..)
+    , isSupportedFamily
+    , packFamily
+    , unpackFamily
+
+    -- * Socket addresses
+    , SockAddr(..)
+    , HostAddress
+#if defined(IPV6_SOCKET_SUPPORT)
+    , HostAddress6
+    , FlowInfo
+    , ScopeID
+#endif
+    , peekSockAddr
+    , pokeSockAddr
+    , sizeOfSockAddr
+    , sizeOfSockAddrByFamily
+    , withSockAddr
+    , withNewSockAddr
+
+    -- * Unsorted
+    , ProtocolNumber
+    , PortNumber(..)
+
+    -- * Low-level helpers
+    , zeroMemory
+    ) where
+
+#include "HsNet.h"
+
+import Control.Concurrent.MVar
+import Control.Monad
+import Data.Bits
+import Data.Maybe
+import Data.Ratio
+import Data.Typeable
+import Data.Word
+import Foreign.C
+import Foreign.Marshal.Alloc
+import Foreign.Marshal.Array
+import Foreign.Ptr
+import Foreign.Storable
+
+data Socket
+  = MkSocket
+            CInt                 -- File Descriptor
+            Family
+            SocketType
+            ProtocolNumber       -- Protocol Number
+            (MVar SocketStatus)  -- Status Flag
+  deriving Typeable
+
+sockFd       (MkSocket n _ _ _ _) = n
+sockFamily   (MkSocket _ f _ _ _) = f
+sockType     (MkSocket _ _ t _ _) = t
+sockProtocol (MkSocket _ _ _ p _) = p
+sockStatus   (MkSocket _ _ _ _ s) = s
+
+instance Eq Socket where
+  (MkSocket _ _ _ _ m1) == (MkSocket _ _ _ _ m2) = m1 == m2
+
+instance Show Socket where
+  showsPrec _n (MkSocket fd _ _ _ _) =
+        showString "<socket: " . shows fd . showString ">"
+
+type ProtocolNumber = CInt
+
+data SocketStatus
+  -- Returned Status    Function called
+  = NotConnected        -- socket
+  | Bound               -- bind
+  | Listening           -- listen
+  | Connected           -- connect/accept
+  | ConvertedToHandle   -- is now a Handle, don't touch
+  | Closed              -- close
+    deriving (Eq, Show, Typeable)
+
+-----------------------------------------------------------------------------
+-- Socket types
+
+-- There are a few possible ways to do this.  The first is convert the
+-- structs used in the C library into an equivalent Haskell type. An
+-- other possible implementation is to keep all the internals in the C
+-- code and use an Int## and a status flag. The second method is used
+-- here since a lot of the C structures are not required to be
+-- manipulated.
+
+-- Originally the status was non-mutable so we had to return a new
+-- socket each time we changed the status.  This version now uses
+-- mutable variables to avoid the need to do this.  The result is a
+-- cleaner interface and better security since the application
+-- programmer now can't circumvent the status information to perform
+-- invalid operations on sockets.
+
+-- | Socket Types.
+--
+-- The existence of a constructor does not necessarily imply that that
+-- socket type is supported on your system: see 'isSupportedSocketType'.
+data SocketType
+        = NoSocketType -- ^ 0, used in getAddrInfo hints, for example
+        | Stream -- ^ SOCK_STREAM
+        | Datagram -- ^ SOCK_DGRAM
+        | Raw -- ^ SOCK_RAW
+        | RDM -- ^ SOCK_RDM
+        | SeqPacket -- ^ SOCK_SEQPACKET
+        deriving (Eq, Ord, Read, Show, Typeable)
+
+-- | Does the SOCK_ constant corresponding to the given SocketType exist on
+-- this system?
+isSupportedSocketType :: SocketType -> Bool
+isSupportedSocketType = isJust . packSocketType'
+
+-- | Find the SOCK_ constant corresponding to the SocketType value.
+packSocketType' :: SocketType -> Maybe CInt
+packSocketType' stype = case Just stype of
+    -- the Just above is to disable GHC's overlapping pattern
+    -- detection: see comments for packSocketOption
+    Just NoSocketType -> Just 0
+#ifdef SOCK_STREAM
+    Just Stream -> Just #const SOCK_STREAM
+#endif
+#ifdef SOCK_DGRAM
+    Just Datagram -> Just #const SOCK_DGRAM
+#endif
+#ifdef SOCK_RAW
+    Just Raw -> Just #const SOCK_RAW
+#endif
+#ifdef SOCK_RDM
+    Just RDM -> Just #const SOCK_RDM
+#endif
+#ifdef SOCK_SEQPACKET
+    Just SeqPacket -> Just #const SOCK_SEQPACKET
+#endif
+    _ -> Nothing
+
+packSocketType :: SocketType -> CInt
+packSocketType stype = fromMaybe (error errMsg) (packSocketType' stype)
+  where
+    errMsg = concat ["Network.Socket.packSocketType: ",
+                     "socket type ", show stype, " unsupported on this system"]
+
+-- | Try packSocketType' on the SocketType, if it fails throw an error with
+-- message starting "Network.Socket." ++ the String parameter
+packSocketTypeOrThrow :: String -> SocketType -> IO CInt
+packSocketTypeOrThrow caller stype = maybe err return (packSocketType' stype)
+ where
+  err = ioError . userError . concat $ ["Network.Socket.", caller, ": ",
+    "socket type ", show stype, " unsupported on this system"]
+
+
+unpackSocketType:: CInt -> Maybe SocketType
+unpackSocketType t = case t of
+        0 -> Just NoSocketType
+#ifdef SOCK_STREAM
+        (#const SOCK_STREAM) -> Just Stream
+#endif
+#ifdef SOCK_DGRAM
+        (#const SOCK_DGRAM) -> Just Datagram
+#endif
+#ifdef SOCK_RAW
+        (#const SOCK_RAW) -> Just Raw
+#endif
+#ifdef SOCK_RDM
+        (#const SOCK_RDM) -> Just RDM
+#endif
+#ifdef SOCK_SEQPACKET
+        (#const SOCK_SEQPACKET) -> Just SeqPacket
+#endif
+        _ -> Nothing
+
+-- | Try unpackSocketType on the CInt, if it fails throw an error with
+-- message starting "Network.Socket." ++ the String parameter
+unpackSocketType' :: String -> CInt -> IO SocketType
+unpackSocketType' caller ty = maybe err return (unpackSocketType ty)
+ where
+  err = ioError . userError . concat $ ["Network.Socket.", caller, ": ",
+    "socket type ", show ty, " unsupported on this system"]
+
+------------------------------------------------------------------------
+-- Protocol Families.
+
+-- | Address families.
+--
+-- A constructor being present here does not mean it is supported by the
+-- operating system: see 'isSupportedFamily'.
+data Family
+    = AF_UNSPEC           -- unspecified
+    | AF_UNIX             -- local to host (pipes, portals
+    | AF_INET             -- internetwork: UDP, TCP, etc
+    | AF_INET6            -- Internet Protocol version 6
+    | AF_IMPLINK          -- arpanet imp addresses
+    | AF_PUP              -- pup protocols: e.g. BSP
+    | AF_CHAOS            -- mit CHAOS protocols
+    | AF_NS               -- XEROX NS protocols
+    | AF_NBS              -- nbs protocols
+    | AF_ECMA             -- european computer manufacturers
+    | AF_DATAKIT          -- datakit protocols
+    | AF_CCITT            -- CCITT protocols, X.25 etc
+    | AF_SNA              -- IBM SNA
+    | AF_DECnet           -- DECnet
+    | AF_DLI              -- Direct data link interface
+    | AF_LAT              -- LAT
+    | AF_HYLINK           -- NSC Hyperchannel
+    | AF_APPLETALK        -- Apple Talk
+    | AF_ROUTE            -- Internal Routing Protocol
+    | AF_NETBIOS          -- NetBios-style addresses
+    | AF_NIT              -- Network Interface Tap
+    | AF_802              -- IEEE 802.2, also ISO 8802
+    | AF_ISO              -- ISO protocols
+    | AF_OSI              -- umbrella of all families used by OSI
+    | AF_NETMAN           -- DNA Network Management
+    | AF_X25              -- CCITT X.25
+    | AF_AX25
+    | AF_OSINET           -- AFI
+    | AF_GOSSIP           -- US Government OSI
+    | AF_IPX              -- Novell Internet Protocol
+    | Pseudo_AF_XTP       -- eXpress Transfer Protocol (no AF)
+    | AF_CTF              -- Common Trace Facility
+    | AF_WAN              -- Wide Area Network protocols
+    | AF_SDL              -- SGI Data Link for DLPI
+    | AF_NETWARE
+    | AF_NDD
+    | AF_INTF             -- Debugging use only
+    | AF_COIP             -- connection-oriented IP, aka ST II
+    | AF_CNT              -- Computer Network Technology
+    | Pseudo_AF_RTIP      -- Help Identify RTIP packets
+    | Pseudo_AF_PIP       -- Help Identify PIP packets
+    | AF_SIP              -- Simple Internet Protocol
+    | AF_ISDN             -- Integrated Services Digital Network
+    | Pseudo_AF_KEY       -- Internal key-management function
+    | AF_NATM             -- native ATM access
+    | AF_ARP              -- (rev.) addr. res. prot. (RFC 826)
+    | Pseudo_AF_HDRCMPLT  -- Used by BPF to not rewrite hdrs in iface output
+    | AF_ENCAP
+    | AF_LINK             -- Link layer interface
+    | AF_RAW              -- Link layer interface
+    | AF_RIF              -- raw interface
+    | AF_NETROM           -- Amateur radio NetROM
+    | AF_BRIDGE           -- multiprotocol bridge
+    | AF_ATMPVC           -- ATM PVCs
+    | AF_ROSE             -- Amateur Radio X.25 PLP
+    | AF_NETBEUI          -- 802.2LLC
+    | AF_SECURITY         -- Security callback pseudo AF
+    | AF_PACKET           -- Packet family
+    | AF_ASH              -- Ash
+    | AF_ECONET           -- Acorn Econet
+    | AF_ATMSVC           -- ATM SVCs
+    | AF_IRDA             -- IRDA sockets
+    | AF_PPPOX            -- PPPoX sockets
+    | AF_WANPIPE          -- Wanpipe API sockets
+    | AF_BLUETOOTH        -- bluetooth sockets
+      deriving (Eq, Ord, Read, Show)
+
+packFamily :: Family -> CInt
+packFamily f = case packFamily' f of
+    Just fam -> fam
+    Nothing -> error $
+               "Network.Socket.packFamily: unsupported address family: " ++
+               show f
+
+-- | Does the AF_ constant corresponding to the given family exist on this
+-- system?
+isSupportedFamily :: Family -> Bool
+isSupportedFamily = isJust . packFamily'
+
+packFamily' :: Family -> Maybe CInt
+packFamily' f = case Just f of
+    -- the Just above is to disable GHC's overlapping pattern
+    -- detection: see comments for packSocketOption
+    Just AF_UNSPEC -> Just #const AF_UNSPEC
+#ifdef AF_UNIX
+    Just AF_UNIX -> Just #const AF_UNIX
+#endif
+#ifdef AF_INET
+    Just AF_INET -> Just #const AF_INET
+#endif
+#ifdef AF_INET6
+    Just AF_INET6 -> Just #const AF_INET6
+#endif
+#ifdef AF_IMPLINK
+    Just AF_IMPLINK -> Just #const AF_IMPLINK
+#endif
+#ifdef AF_PUP
+    Just AF_PUP -> Just #const AF_PUP
+#endif
+#ifdef AF_CHAOS
+    Just AF_CHAOS -> Just #const AF_CHAOS
+#endif
+#ifdef AF_NS
+    Just AF_NS -> Just #const AF_NS
+#endif
+#ifdef AF_NBS
+    Just AF_NBS -> Just #const AF_NBS
+#endif
+#ifdef AF_ECMA
+    Just AF_ECMA -> Just #const AF_ECMA
+#endif
+#ifdef AF_DATAKIT
+    Just AF_DATAKIT -> Just #const AF_DATAKIT
+#endif
+#ifdef AF_CCITT
+    Just AF_CCITT -> Just #const AF_CCITT
+#endif
+#ifdef AF_SNA
+    Just AF_SNA -> Just #const AF_SNA
+#endif
+#ifdef AF_DECnet
+    Just AF_DECnet -> Just #const AF_DECnet
+#endif
+#ifdef AF_DLI
+    Just AF_DLI -> Just #const AF_DLI
+#endif
+#ifdef AF_LAT
+    Just AF_LAT -> Just #const AF_LAT
+#endif
+#ifdef AF_HYLINK
+    Just AF_HYLINK -> Just #const AF_HYLINK
+#endif
+#ifdef AF_APPLETALK
+    Just AF_APPLETALK -> Just #const AF_APPLETALK
+#endif
+#ifdef AF_ROUTE
+    Just AF_ROUTE -> Just #const AF_ROUTE
+#endif
+#ifdef AF_NETBIOS
+    Just AF_NETBIOS -> Just #const AF_NETBIOS
+#endif
+#ifdef AF_NIT
+    Just AF_NIT -> Just #const AF_NIT
+#endif
+#ifdef AF_802
+    Just AF_802 -> Just #const AF_802
+#endif
+#ifdef AF_ISO
+    Just AF_ISO -> Just #const AF_ISO
+#endif
+#ifdef AF_OSI
+    Just AF_OSI -> Just #const AF_OSI
+#endif
+#ifdef AF_NETMAN
+    Just AF_NETMAN -> Just #const AF_NETMAN
+#endif
+#ifdef AF_X25
+    Just AF_X25 -> Just #const AF_X25
+#endif
+#ifdef AF_AX25
+    Just AF_AX25 -> Just #const AF_AX25
+#endif
+#ifdef AF_OSINET
+    Just AF_OSINET -> Just #const AF_OSINET
+#endif
+#ifdef AF_GOSSIP
+    Just AF_GOSSIP -> Just #const AF_GOSSIP
+#endif
+#ifdef AF_IPX
+    Just AF_IPX -> Just #const AF_IPX
+#endif
+#ifdef Pseudo_AF_XTP
+    Just Pseudo_AF_XTP -> Just #const Pseudo_AF_XTP
+#endif
+#ifdef AF_CTF
+    Just AF_CTF -> Just #const AF_CTF
+#endif
+#ifdef AF_WAN
+    Just AF_WAN -> Just #const AF_WAN
+#endif
+#ifdef AF_SDL
+    Just AF_SDL -> Just #const AF_SDL
+#endif
+#ifdef AF_NETWARE
+    Just AF_NETWARE -> Just #const AF_NETWARE
+#endif
+#ifdef AF_NDD
+    Just AF_NDD -> Just #const AF_NDD
+#endif
+#ifdef AF_INTF
+    Just AF_INTF -> Just #const AF_INTF
+#endif
+#ifdef AF_COIP
+    Just AF_COIP -> Just #const AF_COIP
+#endif
+#ifdef AF_CNT
+    Just AF_CNT -> Just #const AF_CNT
+#endif
+#ifdef Pseudo_AF_RTIP
+    Just Pseudo_AF_RTIP -> Just #const Pseudo_AF_RTIP
+#endif
+#ifdef Pseudo_AF_PIP
+    Just Pseudo_AF_PIP -> Just #const Pseudo_AF_PIP
+#endif
+#ifdef AF_SIP
+    Just AF_SIP -> Just #const AF_SIP
+#endif
+#ifdef AF_ISDN
+    Just AF_ISDN -> Just #const AF_ISDN
+#endif
+#ifdef Pseudo_AF_KEY
+    Just Pseudo_AF_KEY -> Just #const Pseudo_AF_KEY
+#endif
+#ifdef AF_NATM
+    Just AF_NATM -> Just #const AF_NATM
+#endif
+#ifdef AF_ARP
+    Just AF_ARP -> Just #const AF_ARP
+#endif
+#ifdef Pseudo_AF_HDRCMPLT
+    Just Pseudo_AF_HDRCMPLT -> Just #const Pseudo_AF_HDRCMPLT
+#endif
+#ifdef AF_ENCAP
+    Just AF_ENCAP -> Just #const AF_ENCAP
+#endif
+#ifdef AF_LINK
+    Just AF_LINK -> Just #const AF_LINK
+#endif
+#ifdef AF_RAW
+    Just AF_RAW -> Just #const AF_RAW
+#endif
+#ifdef AF_RIF
+    Just AF_RIF -> Just #const AF_RIF
+#endif
+#ifdef AF_NETROM
+    Just AF_NETROM -> Just #const AF_NETROM
+#endif
+#ifdef AF_BRIDGE
+    Just AF_BRIDGE -> Just #const AF_BRIDGE
+#endif
+#ifdef AF_ATMPVC
+    Just AF_ATMPVC -> Just #const AF_ATMPVC
+#endif
+#ifdef AF_ROSE
+    Just AF_ROSE -> Just #const AF_ROSE
+#endif
+#ifdef AF_NETBEUI
+    Just AF_NETBEUI -> Just #const AF_NETBEUI
+#endif
+#ifdef AF_SECURITY
+    Just AF_SECURITY -> Just #const AF_SECURITY
+#endif
+#ifdef AF_PACKET
+    Just AF_PACKET -> Just #const AF_PACKET
+#endif
+#ifdef AF_ASH
+    Just AF_ASH -> Just #const AF_ASH
+#endif
+#ifdef AF_ECONET
+    Just AF_ECONET -> Just #const AF_ECONET
+#endif
+#ifdef AF_ATMSVC
+    Just AF_ATMSVC -> Just #const AF_ATMSVC
+#endif
+#ifdef AF_IRDA
+    Just AF_IRDA -> Just #const AF_IRDA
+#endif
+#ifdef AF_PPPOX
+    Just AF_PPPOX -> Just #const AF_PPPOX
+#endif
+#ifdef AF_WANPIPE
+    Just AF_WANPIPE -> Just #const AF_WANPIPE
+#endif
+#ifdef AF_BLUETOOTH
+    Just AF_BLUETOOTH -> Just #const AF_BLUETOOTH
+#endif
+    _ -> Nothing
+
+--------- ----------
+
+unpackFamily :: CInt -> Family
+unpackFamily f = case f of
+        (#const AF_UNSPEC) -> AF_UNSPEC
+#ifdef AF_UNIX
+        (#const AF_UNIX) -> AF_UNIX
+#endif
+#ifdef AF_INET
+        (#const AF_INET) -> AF_INET
+#endif
+#ifdef AF_INET6
+        (#const AF_INET6) -> AF_INET6
+#endif
+#ifdef AF_IMPLINK
+        (#const AF_IMPLINK) -> AF_IMPLINK
+#endif
+#ifdef AF_PUP
+        (#const AF_PUP) -> AF_PUP
+#endif
+#ifdef AF_CHAOS
+        (#const AF_CHAOS) -> AF_CHAOS
+#endif
+#ifdef AF_NS
+        (#const AF_NS) -> AF_NS
+#endif
+#ifdef AF_NBS
+        (#const AF_NBS) -> AF_NBS
+#endif
+#ifdef AF_ECMA
+        (#const AF_ECMA) -> AF_ECMA
+#endif
+#ifdef AF_DATAKIT
+        (#const AF_DATAKIT) -> AF_DATAKIT
+#endif
+#ifdef AF_CCITT
+        (#const AF_CCITT) -> AF_CCITT
+#endif
+#ifdef AF_SNA
+        (#const AF_SNA) -> AF_SNA
+#endif
+#ifdef AF_DECnet
+        (#const AF_DECnet) -> AF_DECnet
+#endif
+#ifdef AF_DLI
+        (#const AF_DLI) -> AF_DLI
+#endif
+#ifdef AF_LAT
+        (#const AF_LAT) -> AF_LAT
+#endif
+#ifdef AF_HYLINK
+        (#const AF_HYLINK) -> AF_HYLINK
+#endif
+#ifdef AF_APPLETALK
+        (#const AF_APPLETALK) -> AF_APPLETALK
+#endif
+#ifdef AF_ROUTE
+        (#const AF_ROUTE) -> AF_ROUTE
+#endif
+#ifdef AF_NETBIOS
+        (#const AF_NETBIOS) -> AF_NETBIOS
+#endif
+#ifdef AF_NIT
+        (#const AF_NIT) -> AF_NIT
+#endif
+#ifdef AF_802
+        (#const AF_802) -> AF_802
+#endif
+#ifdef AF_ISO
+        (#const AF_ISO) -> AF_ISO
+#endif
+#ifdef AF_OSI
+# if (!defined(AF_ISO)) || (defined(AF_ISO) && (AF_ISO != AF_OSI))
+        (#const AF_OSI) -> AF_OSI
+# endif
+#endif
+#ifdef AF_NETMAN
+        (#const AF_NETMAN) -> AF_NETMAN
+#endif
+#ifdef AF_X25
+        (#const AF_X25) -> AF_X25
+#endif
+#ifdef AF_AX25
+        (#const AF_AX25) -> AF_AX25
+#endif
+#ifdef AF_OSINET
+        (#const AF_OSINET) -> AF_OSINET
+#endif
+#ifdef AF_GOSSIP
+        (#const AF_GOSSIP) -> AF_GOSSIP
+#endif
+#if defined(AF_IPX) && (!defined(AF_NS) || AF_NS != AF_IPX)
+        (#const AF_IPX) -> AF_IPX
+#endif
+#ifdef Pseudo_AF_XTP
+        (#const Pseudo_AF_XTP) -> Pseudo_AF_XTP
+#endif
+#ifdef AF_CTF
+        (#const AF_CTF) -> AF_CTF
+#endif
+#ifdef AF_WAN
+        (#const AF_WAN) -> AF_WAN
+#endif
+#ifdef AF_SDL
+        (#const AF_SDL) -> AF_SDL
+#endif
+#ifdef AF_NETWARE
+        (#const AF_NETWARE) -> AF_NETWARE
+#endif
+#ifdef AF_NDD
+        (#const AF_NDD) -> AF_NDD
+#endif
+#ifdef AF_INTF
+        (#const AF_INTF) -> AF_INTF
+#endif
+#ifdef AF_COIP
+        (#const AF_COIP) -> AF_COIP
+#endif
+#ifdef AF_CNT
+        (#const AF_CNT) -> AF_CNT
+#endif
+#ifdef Pseudo_AF_RTIP
+        (#const Pseudo_AF_RTIP) -> Pseudo_AF_RTIP
+#endif
+#ifdef Pseudo_AF_PIP
+        (#const Pseudo_AF_PIP) -> Pseudo_AF_PIP
+#endif
+#ifdef AF_SIP
+        (#const AF_SIP) -> AF_SIP
+#endif
+#ifdef AF_ISDN
+        (#const AF_ISDN) -> AF_ISDN
+#endif
+#ifdef Pseudo_AF_KEY
+        (#const Pseudo_AF_KEY) -> Pseudo_AF_KEY
+#endif
+#ifdef AF_NATM
+        (#const AF_NATM) -> AF_NATM
+#endif
+#ifdef AF_ARP
+        (#const AF_ARP) -> AF_ARP
+#endif
+#ifdef Pseudo_AF_HDRCMPLT
+        (#const Pseudo_AF_HDRCMPLT) -> Pseudo_AF_HDRCMPLT
+#endif
+#ifdef AF_ENCAP
+        (#const AF_ENCAP) -> AF_ENCAP
+#endif
+#ifdef AF_LINK
+        (#const AF_LINK) -> AF_LINK
+#endif
+#ifdef AF_RAW
+        (#const AF_RAW) -> AF_RAW
+#endif
+#ifdef AF_RIF
+        (#const AF_RIF) -> AF_RIF
+#endif
+#ifdef AF_NETROM
+        (#const AF_NETROM) -> AF_NETROM
+#endif
+#ifdef AF_BRIDGE
+        (#const AF_BRIDGE) -> AF_BRIDGE
+#endif
+#ifdef AF_ATMPVC
+        (#const AF_ATMPVC) -> AF_ATMPVC
+#endif
+#ifdef AF_ROSE
+        (#const AF_ROSE) -> AF_ROSE
+#endif
+#ifdef AF_NETBEUI
+        (#const AF_NETBEUI) -> AF_NETBEUI
+#endif
+#ifdef AF_SECURITY
+        (#const AF_SECURITY) -> AF_SECURITY
+#endif
+#ifdef AF_PACKET
+        (#const AF_PACKET) -> AF_PACKET
+#endif
+#ifdef AF_ASH
+        (#const AF_ASH) -> AF_ASH
+#endif
+#ifdef AF_ECONET
+        (#const AF_ECONET) -> AF_ECONET
+#endif
+#ifdef AF_ATMSVC
+        (#const AF_ATMSVC) -> AF_ATMSVC
+#endif
+#ifdef AF_IRDA
+        (#const AF_IRDA) -> AF_IRDA
+#endif
+#ifdef AF_PPPOX
+        (#const AF_PPPOX) -> AF_PPPOX
+#endif
+#ifdef AF_WANPIPE
+        (#const AF_WANPIPE) -> AF_WANPIPE
+#endif
+#ifdef AF_BLUETOOTH
+        (#const AF_BLUETOOTH) -> AF_BLUETOOTH
+#endif
+        unknown -> error ("Network.Socket.unpackFamily: unknown address " ++
+                          "family " ++ show unknown)
+
+------------------------------------------------------------------------
+-- Port Numbers
+
+newtype PortNumber = PortNum Word16 deriving (Eq, Ord, Typeable)
+-- newtyped to prevent accidental use of sane-looking
+-- port numbers that haven't actually been converted to
+-- network-byte-order first.
+
+instance Show PortNumber where
+  showsPrec p pn = showsPrec p (portNumberToInt pn)
+
+intToPortNumber :: Int -> PortNumber
+intToPortNumber v = PortNum (htons (fromIntegral v))
+
+portNumberToInt :: PortNumber -> Int
+portNumberToInt (PortNum po) = fromIntegral (ntohs po)
+
+foreign import CALLCONV unsafe "ntohs" ntohs :: Word16 -> Word16
+foreign import CALLCONV unsafe "htons" htons :: Word16 -> Word16
+--foreign import CALLCONV unsafe "ntohl" ntohl :: Word32 -> Word32
+
+instance Enum PortNumber where
+    toEnum   = intToPortNumber
+    fromEnum = portNumberToInt
+
+instance Num PortNumber where
+   fromInteger i = intToPortNumber (fromInteger i)
+    -- for completeness.
+   (+) x y   = intToPortNumber (portNumberToInt x + portNumberToInt y)
+   (-) x y   = intToPortNumber (portNumberToInt x - portNumberToInt y)
+   negate x  = intToPortNumber (-portNumberToInt x)
+   (*) x y   = intToPortNumber (portNumberToInt x * portNumberToInt y)
+   abs n     = intToPortNumber (abs (portNumberToInt n))
+   signum n  = intToPortNumber (signum (portNumberToInt n))
+
+instance Real PortNumber where
+    toRational x = toInteger x % 1
+
+instance Integral PortNumber where
+    quotRem a b = let (c,d) = quotRem (portNumberToInt a) (portNumberToInt b) in
+                  (intToPortNumber c, intToPortNumber d)
+    toInteger a = toInteger (portNumberToInt a)
+
+instance Storable PortNumber where
+   sizeOf    _ = sizeOf    (undefined :: Word16)
+   alignment _ = alignment (undefined :: Word16)
+   poke p (PortNum po) = poke (castPtr p) po
+   peek p = PortNum `liftM` peek (castPtr p)
+
+------------------------------------------------------------------------
+-- Socket addresses
+
+-- The scheme used for addressing sockets is somewhat quirky. The
+-- calls in the BSD socket API that need to know the socket address
+-- all operate in terms of struct sockaddr, a `virtual' type of
+-- socket address.
+
+-- The Internet family of sockets are addressed as struct sockaddr_in,
+-- so when calling functions that operate on struct sockaddr, we have
+-- to type cast the Internet socket address into a struct sockaddr.
+-- Instances of the structure for different families might *not* be
+-- the same size. Same casting is required of other families of
+-- sockets such as Xerox NS. Similarly for Unix domain sockets.
+
+-- To represent these socket addresses in Haskell-land, we do what BSD
+-- didn't do, and use a union/algebraic type for the different
+-- families. Currently only Unix domain sockets and the Internet
+-- families are supported.
+
+#if defined(IPV6_SOCKET_SUPPORT)
+type FlowInfo = Word32
+type ScopeID = Word32
+#endif
+
+data SockAddr       -- C Names
+  = SockAddrInet
+    PortNumber  -- sin_port  (network byte order)
+    HostAddress -- sin_addr  (ditto)
+#if defined(IPV6_SOCKET_SUPPORT)
+  | SockAddrInet6
+        PortNumber      -- sin6_port (network byte order)
+        FlowInfo        -- sin6_flowinfo (ditto)
+        HostAddress6    -- sin6_addr (ditto)
+        ScopeID         -- sin6_scope_id (ditto)
+#endif
+#if defined(DOMAIN_SOCKET_SUPPORT)
+  | SockAddrUnix
+        String          -- sun_path
+#endif
+  deriving (Eq, Ord, Typeable)
+
+#if defined(WITH_WINSOCK) || defined(cygwin32_HOST_OS)
+type CSaFamily = (#type unsigned short)
+#elif defined(darwin_HOST_OS)
+type CSaFamily = (#type u_char)
+#else
+type CSaFamily = (#type sa_family_t)
+#endif
+
+-- | Computes the storage requirements (in bytes) of the given
+-- 'SockAddr'.  This function differs from 'Foreign.Storable.sizeOf'
+-- in that the value of the argument /is/ used.
+sizeOfSockAddr :: SockAddr -> Int
+#if defined(DOMAIN_SOCKET_SUPPORT)
+sizeOfSockAddr (SockAddrUnix path) =
+    case path of
+        '\0':_ -> (#const sizeof(sa_family_t)) + length path
+        _      -> #const sizeof(struct sockaddr_un)
+#endif
+sizeOfSockAddr (SockAddrInet _ _) = #const sizeof(struct sockaddr_in)
+#if defined(IPV6_SOCKET_SUPPORT)
+sizeOfSockAddr (SockAddrInet6 _ _ _ _) = #const sizeof(struct sockaddr_in6)
+#endif
+
+-- | Computes the storage requirements (in bytes) required for a
+-- 'SockAddr' with the given 'Family'.
+sizeOfSockAddrByFamily :: Family -> Int
+#if defined(DOMAIN_SOCKET_SUPPORT)
+sizeOfSockAddrByFamily AF_UNIX  = #const sizeof(struct sockaddr_un)
+#endif
+#if defined(IPV6_SOCKET_SUPPORT)
+sizeOfSockAddrByFamily AF_INET6 = #const sizeof(struct sockaddr_in6)
+#endif
+sizeOfSockAddrByFamily AF_INET  = #const sizeof(struct sockaddr_in)
+
+-- | Use a 'SockAddr' with a function requiring a pointer to a
+-- 'SockAddr' and the length of that 'SockAddr'.
+withSockAddr :: SockAddr -> (Ptr SockAddr -> Int -> IO a) -> IO a
+withSockAddr addr f = do
+    let sz = sizeOfSockAddr addr
+    allocaBytes sz $ \p -> pokeSockAddr p addr >> f (castPtr p) sz
+
+-- | Create a new 'SockAddr' for use with a function requiring a
+-- pointer to a 'SockAddr' and the length of that 'SockAddr'.
+withNewSockAddr :: Family -> (Ptr SockAddr -> Int -> IO a) -> IO a
+withNewSockAddr family f = do
+    let sz = sizeOfSockAddrByFamily family
+    allocaBytes sz $ \ptr -> f ptr sz
+
+-- We can't write an instance of 'Storable' for 'SockAddr' because
+-- @sockaddr@ is a sum type of variable size but
+-- 'Foreign.Storable.sizeOf' is required to be constant.
+
+-- Note that on Darwin, the sockaddr structure must be zeroed before
+-- use.
+
+-- | Write the given 'SockAddr' to the given memory location.
+pokeSockAddr :: Ptr a -> SockAddr -> IO ()
+#if defined(DOMAIN_SOCKET_SUPPORT)
+pokeSockAddr p (SockAddrUnix path) = do
+#if defined(darwin_HOST_OS)
+    zeroMemory p (#const sizeof(struct sockaddr_un))
+#endif
+#if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
+    (#poke struct sockaddr_un, sun_len) p ((#const sizeof(struct sockaddr_un)) :: Word8)
+#endif
+    (#poke struct sockaddr_un, sun_family) p ((#const AF_UNIX) :: CSaFamily)
+    let pathC = map castCharToCChar path
+        poker = case path of ('\0':_) -> pokeArray; _ -> pokeArray0 0
+    poker ((#ptr struct sockaddr_un, sun_path) p) pathC
+#endif
+pokeSockAddr p (SockAddrInet (PortNum port) addr) = do
+#if defined(darwin_HOST_OS)
+    zeroMemory p (#const sizeof(struct sockaddr_in))
+#endif
+#if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
+    (#poke struct sockaddr_in, sin_len) p ((#const sizeof(struct sockaddr_in)) :: Word8)
+#endif
+    (#poke struct sockaddr_in, sin_family) p ((#const AF_INET) :: CSaFamily)
+    (#poke struct sockaddr_in, sin_port) p port
+    (#poke struct sockaddr_in, sin_addr) p addr
+#if defined(IPV6_SOCKET_SUPPORT)
+pokeSockAddr p (SockAddrInet6 (PortNum port) flow addr scope) = do
+#if defined(darwin_HOST_OS)
+    zeroMemory p (#const sizeof(struct sockaddr_in6))
+#endif
+#if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
+    (#poke struct sockaddr_in6, sin6_len) p ((#const sizeof(struct sockaddr_in6)) :: Word8)
+#endif
+    (#poke struct sockaddr_in6, sin6_family) p ((#const AF_INET6) :: CSaFamily)
+    (#poke struct sockaddr_in6, sin6_port) p port
+    (#poke struct sockaddr_in6, sin6_flowinfo) p flow
+    (#poke struct sockaddr_in6, sin6_addr) p addr
+    (#poke struct sockaddr_in6, sin6_scope_id) p scope
+#endif
+
+-- | Read a 'SockAddr' from the given memory location.
+peekSockAddr :: Ptr SockAddr -> IO SockAddr
+peekSockAddr p = do
+  family <- (#peek struct sockaddr, sa_family) p
+  case family :: CSaFamily of
+#if defined(DOMAIN_SOCKET_SUPPORT)
+    (#const AF_UNIX) -> do
+        str <- peekCString ((#ptr struct sockaddr_un, sun_path) p)
+        return (SockAddrUnix str)
+#endif
+    (#const AF_INET) -> do
+        addr <- (#peek struct sockaddr_in, sin_addr) p
+        port <- (#peek struct sockaddr_in, sin_port) p
+        return (SockAddrInet (PortNum port) addr)
+#if defined(IPV6_SOCKET_SUPPORT)
+    (#const AF_INET6) -> do
+        port <- (#peek struct sockaddr_in6, sin6_port) p
+        flow <- (#peek struct sockaddr_in6, sin6_flowinfo) p
+        addr <- (#peek struct sockaddr_in6, sin6_addr) p
+        scope <- (#peek struct sockaddr_in6, sin6_scope_id) p
+        return (SockAddrInet6 (PortNum port) flow addr scope)
+#endif
+
+------------------------------------------------------------------------
+
+-- | Network byte order.
+type HostAddress = Word32
+
+#if defined(IPV6_SOCKET_SUPPORT)
+-- | Host byte order.
+type HostAddress6 = (Word32, Word32, Word32, Word32)
+
+-- The peek32 and poke32 functions work around the fact that the RFCs
+-- don't require 32-bit-wide address fields to be present.  We can
+-- only portably rely on an 8-bit field, s6_addr.
+
+s6_addr_offset :: Int
+s6_addr_offset = (#offset struct in6_addr, s6_addr)
+
+peek32 :: Ptr a -> Int -> IO Word32
+peek32 p i0 = do
+    let i' = i0 * 4
+        peekByte n = peekByteOff p (s6_addr_offset + i' + n) :: IO Word8
+        a `sl` i = fromIntegral a `shiftL` i
+    a0 <- peekByte 0
+    a1 <- peekByte 1
+    a2 <- peekByte 2
+    a3 <- peekByte 3
+    return ((a0 `sl` 24) .|. (a1 `sl` 16) .|. (a2 `sl` 8) .|. (a3 `sl` 0))
+
+poke32 :: Ptr a -> Int -> Word32 -> IO ()
+poke32 p i0 a = do
+    let i' = i0 * 4
+        pokeByte n = pokeByteOff p (s6_addr_offset + i' + n)
+        x `sr` i = fromIntegral (x `shiftR` i) :: Word8
+    pokeByte 0 (a `sr` 24)
+    pokeByte 1 (a `sr` 16)
+    pokeByte 2 (a `sr`  8)
+    pokeByte 3 (a `sr`  0)
+
+instance Storable HostAddress6 where
+    sizeOf _    = (#const sizeof(struct in6_addr))
+    alignment _ = alignment (undefined :: CInt)
+
+    peek p = do
+        a <- peek32 p 0
+        b <- peek32 p 1
+        c <- peek32 p 2
+        d <- peek32 p 3
+        return (a, b, c, d)
+
+    poke p (a, b, c, d) = do
+        poke32 p 0 a
+        poke32 p 1 b
+        poke32 p 2 c
+        poke32 p 3 d
+#endif
+
+------------------------------------------------------------------------
+-- Helper functions
+
+foreign import ccall unsafe "string.h" memset :: Ptr a -> CInt -> CSize -> IO ()
+
+-- | Zero a structure.
+zeroMemory :: Ptr a -> CSize -> IO ()
+zeroMemory dest nbytes = memset dest 0 (fromIntegral nbytes)
diff --git a/Network/URI.hs b/Network/URI.hs
--- a/Network/URI.hs
+++ b/Network/URI.hs
@@ -494,7 +494,7 @@
         ; h <- hexDigitChar
         ; char '.'
         ; a <- many1 (satisfy isIpvFutureChar)
-        ; return $ 'c':h:'.':a
+        ; return $ 'v':h:'.':a
         }
 
 isIpvFutureChar :: Char -> Bool
diff --git a/cbits/asyncAccept.c b/cbits/asyncAccept.c
--- a/cbits/asyncAccept.c
+++ b/cbits/asyncAccept.c
@@ -5,7 +5,7 @@
 #include "HsNet.h"
 #include "HsFFI.h"
 
-#if defined(HAVE_WINSOCK2_H) && !defined(__CYGWIN__) && !defined(__HUGS__)
+#if defined(HAVE_WINSOCK2_H) && !defined(__CYGWIN__)
 
 /* all the way to the end */
 
diff --git a/cbits/initWinSock.c b/cbits/initWinSock.c
--- a/cbits/initWinSock.c
+++ b/cbits/initWinSock.c
@@ -13,12 +13,9 @@
   WORD wVersionRequested;
   WSADATA wsaData;  
   int err;
-#ifdef __HUGS__
-  int optval = SO_SYNCHRONOUS_NONALERT;
-#endif
 
   if (!winsock_inited) {
-    wVersionRequested = MAKEWORD( 1, 1 );
+    wVersionRequested = MAKEWORD( 2, 2 );
 
     err = WSAStartup ( wVersionRequested, &wsaData );
     
@@ -26,19 +23,11 @@
        return err;
     }
 
-    if ( LOBYTE( wsaData.wVersion ) != 1 ||
-       HIBYTE( wsaData.wVersion ) != 1 ) {
+    if ( LOBYTE( wsaData.wVersion ) != 2 ||
+       HIBYTE( wsaData.wVersion ) != 2 ) {
       WSACleanup();
       return (-1);
     }
-#ifdef __HUGS__
-    /* By default, socket() creates sockets in overlapped mode
-     * (so that async I/O is possible). The CRT can only handle
-     * non-overlapped sockets, so turn off overlap mode here.
-     */
-    setsockopt(INVALID_SOCKET, SOL_SOCKET, SO_OPENTYPE,
-	       &optval, sizeof(optval));
-#endif
 
     winsock_inited = 1;
   }
diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -1,6398 +1,5326 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.61 for Haskell network package 2.3.0.14.
-#
-# Report bugs to <libraries@haskell.org>.
-#
-# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-# 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
-# This configure script is free software; the Free Software Foundation
-# gives unlimited permission to copy, distribute and modify it.
-## --------------------- ##
-## M4sh Initialization.  ##
-## --------------------- ##
-
-# Be more Bourne compatible
-DUALCASE=1; export DUALCASE # for MKS sh
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
-  emulate sh
-  NULLCMD=:
-  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
-  # is contrary to our usage.  Disable this feature.
-  alias -g '${1+"$@"}'='"$@"'
-  setopt NO_GLOB_SUBST
-else
-  case `(set -o) 2>/dev/null` in
-  *posix*) set -o posix ;;
-esac
-
-fi
-
-
-
-
-# PATH needs CR
-# Avoid depending upon Character Ranges.
-as_cr_letters='abcdefghijklmnopqrstuvwxyz'
-as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
-as_cr_Letters=$as_cr_letters$as_cr_LETTERS
-as_cr_digits='0123456789'
-as_cr_alnum=$as_cr_Letters$as_cr_digits
-
-# The user is always right.
-if test "${PATH_SEPARATOR+set}" != set; then
-  echo "#! /bin/sh" >conf$$.sh
-  echo  "exit 0"   >>conf$$.sh
-  chmod +x conf$$.sh
-  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
-    PATH_SEPARATOR=';'
-  else
-    PATH_SEPARATOR=:
-  fi
-  rm -f conf$$.sh
-fi
-
-# Support unset when possible.
-if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
-  as_unset=unset
-else
-  as_unset=false
-fi
-
-
-# IFS
-# We need space, tab and new line, in precisely that order.  Quoting is
-# there to prevent editors from complaining about space-tab.
-# (If _AS_PATH_WALK were called with IFS unset, it would disable word
-# splitting by setting IFS to empty value.)
-as_nl='
-'
-IFS=" ""	$as_nl"
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-# Find who we are.  Look in the path if we contain no directory separator.
-case $0 in
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-for as_dir in $PATH
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-  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
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-IFS=$as_save_IFS
-
-     ;;
-esac
-# We did not find ourselves, most probably we were run as `sh COMMAND'
-# in which case we are not to be found in the path.
-if test "x$as_myself" = x; then
-  as_myself=$0
-fi
-if test ! -f "$as_myself"; then
-  echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
-  { (exit 1); exit 1; }
-fi
-
-# Work around bugs in pre-3.0 UWIN ksh.
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-PS1='$ '
-PS2='> '
-PS4='+ '
-
-# NLS nuisances.
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-  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
-  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
-  LC_TELEPHONE LC_TIME
-do
-  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
-    eval $as_var=C; export $as_var
-  else
-    ($as_unset $as_var) >/dev/null 2>&1 && $as_unset $as_var
-  fi
-done
-
-# Required to use basename.
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-   test "X`expr 00001 : '.*\(...\)'`" = X001; then
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-else
-  as_expr=false
-fi
-
-if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
-  as_basename=basename
-else
-  as_basename=false
-fi
-
-
-# Name of the executable.
-as_me=`$as_basename -- "$0" ||
-$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
-	 X"$0" : 'X\(//\)$' \| \
-	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-echo X/"$0" |
-    sed '/^.*\/\([^/][^/]*\)\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-
-# CDPATH.
-$as_unset CDPATH
-
-
-if test "x$CONFIG_SHELL" = x; then
-  if (eval ":") 2>/dev/null; then
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-  as_have_required=no
-fi
-
-  if test $as_have_required = yes && 	 (eval ":
-(as_func_return () {
-  (exit \$1)
-}
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-  as_func_return 1
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-  return 0
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-  return 1
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-exitcode=0
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-
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-fi
-
-if as_func_ret_failure; then
-  exitcode=1
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-fi
-
-if ( set x; as_func_ret_success y && test x = \"\$1\" ); then
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-  exitcode=1
-  echo positional parameters were not saved.
-fi
-
-test \$exitcode = 0) || { (exit 1); exit 1; }
-
-(
-  as_lineno_1=\$LINENO
-  as_lineno_2=\$LINENO
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-  as_candidate_shells=
-    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  case $as_dir in
-	 /*)
-	   for as_base in sh bash ksh sh5; do
-	     as_candidate_shells="$as_candidate_shells $as_dir/$as_base"
-	   done;;
-       esac
-done
-IFS=$as_save_IFS
-
-
-      for as_shell in $as_candidate_shells $SHELL; do
-	 # Try only shells that exist, to save several forks.
-	 if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
-		{ ("$as_shell") 2> /dev/null <<\_ASEOF
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
-  emulate sh
-  NULLCMD=:
-  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
-  # is contrary to our usage.  Disable this feature.
-  alias -g '${1+"$@"}'='"$@"'
-  setopt NO_GLOB_SUBST
-else
-  case `(set -o) 2>/dev/null` in
-  *posix*) set -o posix ;;
-esac
-
-fi
-
-
-:
-_ASEOF
-}; then
-  CONFIG_SHELL=$as_shell
-	       as_have_required=yes
-	       if { "$as_shell" 2> /dev/null <<\_ASEOF
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
-  emulate sh
-  NULLCMD=:
-  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
-  # is contrary to our usage.  Disable this feature.
-  alias -g '${1+"$@"}'='"$@"'
-  setopt NO_GLOB_SUBST
-else
-  case `(set -o) 2>/dev/null` in
-  *posix*) set -o posix ;;
-esac
-
-fi
-
-
-:
-(as_func_return () {
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-as_func_ret_success () {
-  return 0
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-as_func_ret_failure () {
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-
-exitcode=0
-if as_func_success; then
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-
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-if as_func_ret_failure; then
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-if ( set x; as_func_ret_success y && test x = "$1" ); then
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-test $exitcode = 0) || { (exit 1); exit 1; }
-
-(
-  as_lineno_1=$LINENO
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-
-_ASEOF
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-fi
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-      done
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-        do ($as_unset $as_var) >/dev/null 2>&1 && $as_unset $as_var
-        done
-        export CONFIG_SHELL
-        exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
-fi
-
-
-    if test $as_have_required = no; then
-  echo This script requires a shell more modern than all the
-      echo shells that I found on your system.  Please install a
-      echo modern shell, or manually run the script under such a
-      echo shell if you do have one.
-      { (exit 1); exit 1; }
-fi
-
-
-fi
-
-fi
-
-
-
-(eval "as_func_return () {
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-}
-as_func_success () {
-  as_func_return 0
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-as_func_ret_success () {
-  return 0
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-as_func_ret_failure () {
-  return 1
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-exitcode=0
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-if as_func_ret_failure; then
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-if ( set x; as_func_ret_success y && test x = \"\$1\" ); then
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-test \$exitcode = 0") || {
-  echo No shell found that supports shell functions.
-  echo Please tell autoconf@gnu.org about your system,
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-
-
-
-  as_lineno_1=$LINENO
-  as_lineno_2=$LINENO
-  test "x$as_lineno_1" != "x$as_lineno_2" &&
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-  # line-number line after each line using $LINENO; the second 'sed'
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-
-
-
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-# Identity of this package.
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-datarootdir
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-x_includes=NONE
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-
-# Installation directory options.
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-  -bindir | --bindir | --bindi | --bind | --bin | --bi)
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-    build_alias=$ac_optarg ;;
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-  -cache-file | --cache-file | --cache-fil | --cache-fi \
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-  -gas | --gas | --ga | --g)
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-  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
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-  -includedir | --includedir | --includedi | --included | --include \
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-  -infodir | --infodir | --infodi | --infod | --info | --inf)
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-    infodir=$ac_optarg ;;
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-  -libdir | --libdir | --libdi | --libd)
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-  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
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-  -localedir | --localedir | --localedi | --localed | --locale)
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-  -localstatedir | --localstatedir | --localstatedi | --localstated \
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-  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
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-  -nfp | --nfp | --nf)
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-  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
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-  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
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-
-  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
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-  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
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-  -program-prefix | --program-prefix | --program-prefi | --program-pref \
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-  -program-suffix | --program-suffix | --program-suffi | --program-suff \
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-Usage: $0 [OPTION]... [VAR=VALUE]...
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-Defaults for the options are specified in brackets.
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-Configuration:
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-System types:
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-Optional Packages:
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-Some influential environment variables:
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-Report bugs to <libraries@haskell.org>.
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-
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-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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-
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-{ echo "$as_me:$LINENO: WARNING: In the future, Autoconf will not detect cross-tools
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-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
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-# Check that the compiler produces executables we can run.  If not, either
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-{ echo "$as_me:$LINENO: result: $cross_compiling" >&5
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-{ echo "$as_me:$LINENO: checking for suffix of executables" >&5
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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-  { { echo "$as_me:$LINENO: error: cannot compute suffix of executables: cannot compile and link
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-  cat >conftest.$ac_ext <<_ACEOF
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-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
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-{
-
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-_ACEOF
-rm -f conftest.o conftest.obj
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-{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile
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-OBJEXT=$ac_cv_objext
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-{ echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5
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-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-#ifndef __GNUC__
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-#endif
-
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-  return 0;
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-_ACEOF
-rm -f conftest.$ac_objext
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-{ echo "$as_me:$LINENO: result: $ac_cv_c_compiler_gnu" >&5
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-/* end confdefs.h.  */
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-{
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-_ACEOF
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-/* end confdefs.h.  */
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-{
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-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_c_werror_flag=$ac_save_c_werror_flag
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-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
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-{
-
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-{ echo "$as_me:$LINENO: checking for $CC option to accept ISO C89" >&5
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-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdarg.h>
-#include <stdio.h>
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-#include <sys/stat.h>
-/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
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-{
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-{
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-
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-
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-
-int test (int i, double x);
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-int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
-int argc;
-char **argv;
-int
-main ()
-{
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-  return 0;
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-for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
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-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
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-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-
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-
-rm -f core conftest.err conftest.$ac_objext
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-rm -f conftest.$ac_ext
-CC=$ac_save_CC
-
-fi
-# AC_CACHE_VAL
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-  xno)
-    { echo "$as_me:$LINENO: result: unsupported" >&5
-echo "${ECHO_T}unsupported" >&6; } ;;
-  *)
-    CC="$CC $ac_cv_prog_cc_c89"
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-echo "${ECHO_T}$ac_cv_prog_cc_c89" >&6; } ;;
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-
-
-ac_ext=c
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-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-
-{ echo "$as_me:$LINENO: checking for an ANSI C-conforming const" >&5
-echo $ECHO_N "checking for an ANSI C-conforming const... $ECHO_C" >&6; }
-if test "${ac_cv_c_const+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-/* FIXME: Include the comments suggested by Paul. */
-#ifndef __cplusplus
-  /* Ultrix mips cc rejects this.  */
-  typedef int charset[2];
-  const charset cs;
-  /* SunOS 4.1.1 cc rejects this.  */
-  char const *const *pcpcc;
-  char **ppc;
-  /* NEC SVR4.0.2 mips cc rejects this.  */
-  struct point {int x, y;};
-  static struct point const zero = {0,0};
-  /* AIX XL C 1.02.0.0 rejects this.
-     It does not let you subtract one const X* pointer from another in
-     an arm of an if-expression whose if-part is not a constant
-     expression */
-  const char *g = "string";
-  pcpcc = &g + (g ? g-g : 0);
-  /* HPUX 7.0 cc rejects these. */
-  ++pcpcc;
-  ppc = (char**) pcpcc;
-  pcpcc = (char const *const *) ppc;
-  { /* SCO 3.2v4 cc rejects this.  */
-    char *t;
-    char const *s = 0 ? (char *) 0 : (char const *) 0;
-
-    *t++ = 0;
-    if (s) return 0;
-  }
-  { /* Someone thinks the Sun supposedly-ANSI compiler will reject this.  */
-    int x[] = {25, 17};
-    const int *foo = &x[0];
-    ++foo;
-  }
-  { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
-    typedef const int *iptr;
-    iptr p = 0;
-    ++p;
-  }
-  { /* AIX XL C 1.02.0.0 rejects this saying
-       "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
-    struct s { int j; const int *ap[3]; };
-    struct s *b; b->j = 5;
-  }
-  { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
-    const int foo = 10;
-    if (!foo) return 0;
-  }
-  return !cs[0] && !zero.x;
-#endif
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_c_const=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_c_const=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_c_const" >&5
-echo "${ECHO_T}$ac_cv_c_const" >&6; }
-if test $ac_cv_c_const = no; then
-
-cat >>confdefs.h <<\_ACEOF
-#define const
-_ACEOF
-
-fi
-
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-{ echo "$as_me:$LINENO: checking how to run the C preprocessor" >&5
-echo $ECHO_N "checking how to run the C preprocessor... $ECHO_C" >&6; }
-# On Suns, sometimes $CPP names a directory.
-if test -n "$CPP" && test -d "$CPP"; then
-  CPP=
-fi
-if test -z "$CPP"; then
-  if test "${ac_cv_prog_CPP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-      # Double quotes because CPP needs to be expanded
-    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
-    do
-      ac_preproc_ok=false
-for ac_c_preproc_warn_flag in '' yes
-do
-  # Use a header file that comes with gcc, so configuring glibc
-  # with a fresh cross-compiler works.
-  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-  # <limits.h> exists even on freestanding compilers.
-  # On the NeXT, cc -E runs the code through the compiler's parser,
-  # not just through cpp. "Syntax error" is here to catch this case.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-		     Syntax error
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null && {
-	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       }; then
-  :
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  # Broken: fails on valid input.
-continue
-fi
-
-rm -f conftest.err conftest.$ac_ext
-
-  # OK, works on sane cases.  Now check whether nonexistent headers
-  # can be detected and how.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <ac_nonexistent.h>
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null && {
-	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       }; then
-  # Broken: success on invalid input.
-continue
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  # Passes both tests.
-ac_preproc_ok=:
-break
-fi
-
-rm -f conftest.err conftest.$ac_ext
-
-done
-# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.err conftest.$ac_ext
-if $ac_preproc_ok; then
-  break
-fi
-
-    done
-    ac_cv_prog_CPP=$CPP
-
-fi
-  CPP=$ac_cv_prog_CPP
-else
-  ac_cv_prog_CPP=$CPP
-fi
-{ echo "$as_me:$LINENO: result: $CPP" >&5
-echo "${ECHO_T}$CPP" >&6; }
-ac_preproc_ok=false
-for ac_c_preproc_warn_flag in '' yes
-do
-  # Use a header file that comes with gcc, so configuring glibc
-  # with a fresh cross-compiler works.
-  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-  # <limits.h> exists even on freestanding compilers.
-  # On the NeXT, cc -E runs the code through the compiler's parser,
-  # not just through cpp. "Syntax error" is here to catch this case.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-		     Syntax error
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null && {
-	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       }; then
-  :
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  # Broken: fails on valid input.
-continue
-fi
-
-rm -f conftest.err conftest.$ac_ext
-
-  # OK, works on sane cases.  Now check whether nonexistent headers
-  # can be detected and how.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <ac_nonexistent.h>
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null && {
-	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       }; then
-  # Broken: success on invalid input.
-continue
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  # Passes both tests.
-ac_preproc_ok=:
-break
-fi
-
-rm -f conftest.err conftest.$ac_ext
-
-done
-# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.err conftest.$ac_ext
-if $ac_preproc_ok; then
-  :
-else
-  { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details." >&5
-echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-{ echo "$as_me:$LINENO: checking for grep that handles long lines and -e" >&5
-echo $ECHO_N "checking for grep that handles long lines and -e... $ECHO_C" >&6; }
-if test "${ac_cv_path_GREP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  # Extract the first word of "grep ggrep" to use in msg output
-if test -z "$GREP"; then
-set dummy grep ggrep; ac_prog_name=$2
-if test "${ac_cv_path_GREP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_path_GREP_found=false
-# Loop through the user's path and test for each of PROGNAME-LIST
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_prog in grep ggrep; do
-  for ac_exec_ext in '' $ac_executable_extensions; do
-    ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
-    { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
-    # Check for GNU ac_path_GREP and select it if it is found.
-  # Check for GNU $ac_path_GREP
-case `"$ac_path_GREP" --version 2>&1` in
-*GNU*)
-  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
-*)
-  ac_count=0
-  echo $ECHO_N "0123456789$ECHO_C" >"conftest.in"
-  while :
-  do
-    cat "conftest.in" "conftest.in" >"conftest.tmp"
-    mv "conftest.tmp" "conftest.in"
-    cp "conftest.in" "conftest.nl"
-    echo 'GREP' >> "conftest.nl"
-    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
-    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
-    ac_count=`expr $ac_count + 1`
-    if test $ac_count -gt ${ac_path_GREP_max-0}; then
-      # Best one so far, save it but keep looking for a better one
-      ac_cv_path_GREP="$ac_path_GREP"
-      ac_path_GREP_max=$ac_count
-    fi
-    # 10*(2^10) chars as input seems more than enough
-    test $ac_count -gt 10 && break
-  done
-  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
-esac
-
-
-    $ac_path_GREP_found && break 3
-  done
-done
-
-done
-IFS=$as_save_IFS
-
-
-fi
-
-GREP="$ac_cv_path_GREP"
-if test -z "$GREP"; then
-  { { echo "$as_me:$LINENO: error: no acceptable $ac_prog_name could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" >&5
-echo "$as_me: error: no acceptable $ac_prog_name could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" >&2;}
-   { (exit 1); exit 1; }; }
-fi
-
-else
-  ac_cv_path_GREP=$GREP
-fi
-
-
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_path_GREP" >&5
-echo "${ECHO_T}$ac_cv_path_GREP" >&6; }
- GREP="$ac_cv_path_GREP"
-
-
-{ echo "$as_me:$LINENO: checking for egrep" >&5
-echo $ECHO_N "checking for egrep... $ECHO_C" >&6; }
-if test "${ac_cv_path_EGREP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
-   then ac_cv_path_EGREP="$GREP -E"
-   else
-     # Extract the first word of "egrep" to use in msg output
-if test -z "$EGREP"; then
-set dummy egrep; ac_prog_name=$2
-if test "${ac_cv_path_EGREP+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_path_EGREP_found=false
-# Loop through the user's path and test for each of PROGNAME-LIST
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-  for ac_prog in egrep; do
-  for ac_exec_ext in '' $ac_executable_extensions; do
-    ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
-    { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
-    # Check for GNU ac_path_EGREP and select it if it is found.
-  # Check for GNU $ac_path_EGREP
-case `"$ac_path_EGREP" --version 2>&1` in
-*GNU*)
-  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
-*)
-  ac_count=0
-  echo $ECHO_N "0123456789$ECHO_C" >"conftest.in"
-  while :
-  do
-    cat "conftest.in" "conftest.in" >"conftest.tmp"
-    mv "conftest.tmp" "conftest.in"
-    cp "conftest.in" "conftest.nl"
-    echo 'EGREP' >> "conftest.nl"
-    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
-    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
-    ac_count=`expr $ac_count + 1`
-    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
-      # Best one so far, save it but keep looking for a better one
-      ac_cv_path_EGREP="$ac_path_EGREP"
-      ac_path_EGREP_max=$ac_count
-    fi
-    # 10*(2^10) chars as input seems more than enough
-    test $ac_count -gt 10 && break
-  done
-  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
-esac
-
-
-    $ac_path_EGREP_found && break 3
-  done
-done
-
-done
-IFS=$as_save_IFS
-
-
-fi
-
-EGREP="$ac_cv_path_EGREP"
-if test -z "$EGREP"; then
-  { { echo "$as_me:$LINENO: error: no acceptable $ac_prog_name could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" >&5
-echo "$as_me: error: no acceptable $ac_prog_name could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" >&2;}
-   { (exit 1); exit 1; }; }
-fi
-
-else
-  ac_cv_path_EGREP=$EGREP
-fi
-
-
-   fi
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_path_EGREP" >&5
-echo "${ECHO_T}$ac_cv_path_EGREP" >&6; }
- EGREP="$ac_cv_path_EGREP"
-
-
-{ echo "$as_me:$LINENO: checking for ANSI C header files" >&5
-echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6; }
-if test "${ac_cv_header_stdc+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <float.h>
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_header_stdc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_header_stdc=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-if test $ac_cv_header_stdc = yes; then
-  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <string.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "memchr" >/dev/null 2>&1; then
-  :
-else
-  ac_cv_header_stdc=no
-fi
-rm -f -r conftest*
-
-fi
-
-if test $ac_cv_header_stdc = yes; then
-  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "free" >/dev/null 2>&1; then
-  :
-else
-  ac_cv_header_stdc=no
-fi
-rm -f -r conftest*
-
-fi
-
-if test $ac_cv_header_stdc = yes; then
-  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
-  if test "$cross_compiling" = yes; then
-  :
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <ctype.h>
-#include <stdlib.h>
-#if ((' ' & 0x0FF) == 0x020)
-# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
-# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
-#else
-# define ISLOWER(c) \
-		   (('a' <= (c) && (c) <= 'i') \
-		     || ('j' <= (c) && (c) <= 'r') \
-		     || ('s' <= (c) && (c) <= 'z'))
-# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
-#endif
-
-#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
-int
-main ()
-{
-  int i;
-  for (i = 0; i < 256; i++)
-    if (XOR (islower (i), ISLOWER (i))
-	|| toupper (i) != TOUPPER (i))
-      return 2;
-  return 0;
-}
-_ACEOF
-rm -f conftest$ac_exeext
-if { (ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_link") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
-  { (case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_try") 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  :
-else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-( exit $ac_status )
-ac_cv_header_stdc=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
-fi
-
-
-fi
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_header_stdc" >&5
-echo "${ECHO_T}$ac_cv_header_stdc" >&6; }
-if test $ac_cv_header_stdc = yes; then
-
-cat >>confdefs.h <<\_ACEOF
-#define STDC_HEADERS 1
-_ACEOF
-
-fi
-
-# On IRIX 5.3, sys/types and inttypes.h are conflicting.
-
-
-
-
-
-
-
-
-
-for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
-		  inttypes.h stdint.h unistd.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6; }
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-
-#include <$ac_header>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  eval "$as_ac_Header=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	eval "$as_ac_Header=no"
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-ac_res=`eval echo '${'$as_ac_Header'}'`
-	       { echo "$as_me:$LINENO: result: $ac_res" >&5
-echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-
-done
-
-
-
-
-
-
-
-
-
-
-for ac_header in fcntl.h limits.h stdlib.h sys/types.h unistd.h winsock2.h ws2tcpip.h wspiapi.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  { echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6; }
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-ac_res=`eval echo '${'$as_ac_Header'}'`
-	       { echo "$as_me:$LINENO: result: $ac_res" >&5
-echo "${ECHO_T}$ac_res" >&6; }
-else
-  # Is the header compilable?
-{ echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_header_compiler=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6; }
-
-# Is the header present?
-{ echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null && {
-	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       }; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-
-rm -f conftest.err conftest.$ac_ext
-{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6; }
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    ( cat <<\_ASBOX
-## ------------------------------------ ##
-## Report this to libraries@haskell.org ##
-## ------------------------------------ ##
-_ASBOX
-     ) | sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-{ echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6; }
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-ac_res=`eval echo '${'$as_ac_Header'}'`
-	       { echo "$as_me:$LINENO: result: $ac_res" >&5
-echo "${ECHO_T}$ac_res" >&6; }
-
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-
-done
-
-
-
-
-
-
-
-
-for ac_header in arpa/inet.h netdb.h netinet/in.h netinet/tcp.h sys/socket.h sys/uio.h sys/un.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  { echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6; }
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-ac_res=`eval echo '${'$as_ac_Header'}'`
-	       { echo "$as_me:$LINENO: result: $ac_res" >&5
-echo "${ECHO_T}$ac_res" >&6; }
-else
-  # Is the header compilable?
-{ echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_header_compiler=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6; }
-
-# Is the header present?
-{ echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (ac_try="$ac_cpp conftest.$ac_ext"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null && {
-	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       }; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-
-rm -f conftest.err conftest.$ac_ext
-{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6; }
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    ( cat <<\_ASBOX
-## ------------------------------------ ##
-## Report this to libraries@haskell.org ##
-## ------------------------------------ ##
-_ASBOX
-     ) | sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-{ echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6; }
-if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-ac_res=`eval echo '${'$as_ac_Header'}'`
-	       { echo "$as_me:$LINENO: result: $ac_res" >&5
-echo "${ECHO_T}$ac_res" >&6; }
-
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-
-done
-
-
-
-
-for ac_func in readlink symlink
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6; }
-if { as_var=$as_ac_var; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined __stub_$ac_func || defined __stub___$ac_func
-choke me
-#endif
-
-int
-main ()
-{
-return $ac_func ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_link") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest$ac_exeext &&
-       $as_test_x conftest$ac_exeext; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	eval "$as_ac_var=no"
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-ac_res=`eval echo '${'$as_ac_var'}'`
-	       { echo "$as_me:$LINENO: result: $ac_res" >&5
-echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
-{ echo "$as_me:$LINENO: checking for struct msghdr.msg_control" >&5
-echo $ECHO_N "checking for struct msghdr.msg_control... $ECHO_C" >&6; }
-if test "${ac_cv_member_struct_msghdr_msg_control+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-#if HAVE_SYS_UIO_H
-# include <sys/uio.h>
-#endif
-
-int
-main ()
-{
-static struct msghdr ac_aggr;
-if (ac_aggr.msg_control)
-return 0;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_member_struct_msghdr_msg_control=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-#if HAVE_SYS_UIO_H
-# include <sys/uio.h>
-#endif
-
-int
-main ()
-{
-static struct msghdr ac_aggr;
-if (sizeof ac_aggr.msg_control)
-return 0;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_member_struct_msghdr_msg_control=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_member_struct_msghdr_msg_control=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_member_struct_msghdr_msg_control" >&5
-echo "${ECHO_T}$ac_cv_member_struct_msghdr_msg_control" >&6; }
-if test $ac_cv_member_struct_msghdr_msg_control = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_MSGHDR_MSG_CONTROL 1
-_ACEOF
-
-
-fi
-{ echo "$as_me:$LINENO: checking for struct msghdr.msg_accrights" >&5
-echo $ECHO_N "checking for struct msghdr.msg_accrights... $ECHO_C" >&6; }
-if test "${ac_cv_member_struct_msghdr_msg_accrights+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-#if HAVE_SYS_UIO_H
-# include <sys/uio.h>
-#endif
-
-int
-main ()
-{
-static struct msghdr ac_aggr;
-if (ac_aggr.msg_accrights)
-return 0;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_member_struct_msghdr_msg_accrights=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-#if HAVE_SYS_UIO_H
-# include <sys/uio.h>
-#endif
-
-int
-main ()
-{
-static struct msghdr ac_aggr;
-if (sizeof ac_aggr.msg_accrights)
-return 0;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_member_struct_msghdr_msg_accrights=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_member_struct_msghdr_msg_accrights=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_member_struct_msghdr_msg_accrights" >&5
-echo "${ECHO_T}$ac_cv_member_struct_msghdr_msg_accrights" >&6; }
-if test $ac_cv_member_struct_msghdr_msg_accrights = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS 1
-_ACEOF
-
-
-fi
-
-
-{ echo "$as_me:$LINENO: checking for struct sockaddr.sa_len" >&5
-echo $ECHO_N "checking for struct sockaddr.sa_len... $ECHO_C" >&6; }
-if test "${ac_cv_member_struct_sockaddr_sa_len+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-
-int
-main ()
-{
-static struct sockaddr ac_aggr;
-if (ac_aggr.sa_len)
-return 0;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_member_struct_sockaddr_sa_len=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-
-int
-main ()
-{
-static struct sockaddr ac_aggr;
-if (sizeof ac_aggr.sa_len)
-return 0;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_member_struct_sockaddr_sa_len=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_member_struct_sockaddr_sa_len=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_member_struct_sockaddr_sa_len" >&5
-echo "${ECHO_T}$ac_cv_member_struct_sockaddr_sa_len" >&6; }
-if test $ac_cv_member_struct_sockaddr_sa_len = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_STRUCT_SOCKADDR_SA_LEN 1
-_ACEOF
-
-
-fi
-
-
-{ echo "$as_me:$LINENO: checking for in_addr_t in netinet/in.h" >&5
-echo $ECHO_N "checking for in_addr_t in netinet/in.h... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <netinet/in.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "in_addr_t" >/dev/null 2>&1; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_IN_ADDR_T 1
-_ACEOF
- { echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-rm -f -r conftest*
-
-
-{ echo "$as_me:$LINENO: checking for SO_PEERCRED and struct ucred in sys/socket.h" >&5
-echo $ECHO_N "checking for SO_PEERCRED and struct ucred in sys/socket.h... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <sys/socket.h>
-#ifndef SO_PEERCRED
-# error no SO_PEERCRED
-#endif
-struct ucred u;
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_ucred=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_ucred=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-if test "x$ac_cv_ucred" = xno; then
-    old_CFLAGS="$CFLAGS"
-    CFLAGS="-D_GNU_SOURCE $CFLAGS"
-    cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <sys/socket.h>
-#ifndef SO_PEERCRED
-# error no SO_PEERCRED
-#endif
-struct ucred u;
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_ucred=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_ucred=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-    if test "x$ac_cv_ucred" = xyes; then
-        EXTRA_CPPFLAGS=-D_GNU_SOURCE
-    fi
-else
-    old_CFLAGS="$CFLAGS"
-fi
-if test "x$ac_cv_ucred" = xno; then
-    CFLAGS="$old_CFLAGS"
-    { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-else
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_STRUCT_UCRED 1
-_ACEOF
-
-    { echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6; }
-fi
-
-
-{ echo "$as_me:$LINENO: checking for _head_libws2_32_a in -lws2_32" >&5
-echo $ECHO_N "checking for _head_libws2_32_a in -lws2_32... $ECHO_C" >&6; }
-if test "${ac_cv_lib_ws2_32__head_libws2_32_a+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lws2_32  $LIBS"
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char _head_libws2_32_a ();
-int
-main ()
-{
-return _head_libws2_32_a ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_link") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest$ac_exeext &&
-       $as_test_x conftest$ac_exeext; then
-  ac_cv_lib_ws2_32__head_libws2_32_a=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_lib_ws2_32__head_libws2_32_a=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_lib_ws2_32__head_libws2_32_a" >&5
-echo "${ECHO_T}$ac_cv_lib_ws2_32__head_libws2_32_a" >&6; }
-if test $ac_cv_lib_ws2_32__head_libws2_32_a = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBWS2_32 1
-_ACEOF
-
-  LIBS="-lws2_32 $LIBS"
-
-fi
-
-
-{ echo "$as_me:$LINENO: checking for getaddrinfo" >&5
-echo $ECHO_N "checking for getaddrinfo... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-int testme(){ getaddrinfo; }
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_GETADDRINFO 1
-_ACEOF
- ac_have_getaddrinfo=yes; { echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6; }
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	{ echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-if test "x$ac_have_getaddrinfo" = x; then
-  old_CFLAGS="$CFLAGS"
-  if test "z$ac_cv_lib_ws2_32__head_libws2_32_a" = zyes; then
-    CFLAGS="-DWINVER=0x0501 $CFLAGS"
-    { echo "$as_me:$LINENO: checking for getaddrinfo if WINVER is 0x0501" >&5
-echo $ECHO_N "checking for getaddrinfo if WINVER is 0x0501... $ECHO_C" >&6; }
-    cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-    int testme(){ getaddrinfo; }
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_GETADDRINFO 1
-_ACEOF
-
-cat >>confdefs.h <<\_ACEOF
-#define NEED_WINVER_XP 1
-_ACEOF
- EXTRA_CPPFLAGS="-DWINVER=0x0501 $EXTRA_CPPFLAGS"; { echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6; }
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	CFLAGS="$old_CFLAGS"; { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-  fi
-fi
-
-
-for ac_func in gai_strerror
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6; }
-if { as_var=$as_ac_var; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined __stub_$ac_func || defined __stub___$ac_func
-choke me
-#endif
-
-int
-main ()
-{
-return $ac_func ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_link") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest$ac_exeext &&
-       $as_test_x conftest$ac_exeext; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	eval "$as_ac_var=no"
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-ac_res=`eval echo '${'$as_ac_var'}'`
-	       { echo "$as_me:$LINENO: result: $ac_res" >&5
-echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
-{ echo "$as_me:$LINENO: checking whether AI_ADDRCONFIG is declared" >&5
-echo $ECHO_N "checking whether AI_ADDRCONFIG is declared... $ECHO_C" >&6; }
-if test "${ac_cv_have_decl_AI_ADDRCONFIG+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-int
-main ()
-{
-#ifndef AI_ADDRCONFIG
-  (void) AI_ADDRCONFIG;
-#endif
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_have_decl_AI_ADDRCONFIG=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_have_decl_AI_ADDRCONFIG=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_have_decl_AI_ADDRCONFIG" >&5
-echo "${ECHO_T}$ac_cv_have_decl_AI_ADDRCONFIG" >&6; }
-if test $ac_cv_have_decl_AI_ADDRCONFIG = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_AI_ADDRCONFIG 1
-_ACEOF
-
-
-else
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_AI_ADDRCONFIG 0
-_ACEOF
-
-
-fi
-{ echo "$as_me:$LINENO: checking whether AI_ALL is declared" >&5
-echo $ECHO_N "checking whether AI_ALL is declared... $ECHO_C" >&6; }
-if test "${ac_cv_have_decl_AI_ALL+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-int
-main ()
-{
-#ifndef AI_ALL
-  (void) AI_ALL;
-#endif
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_have_decl_AI_ALL=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_have_decl_AI_ALL=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_have_decl_AI_ALL" >&5
-echo "${ECHO_T}$ac_cv_have_decl_AI_ALL" >&6; }
-if test $ac_cv_have_decl_AI_ALL = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_AI_ALL 1
-_ACEOF
-
-
-else
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_AI_ALL 0
-_ACEOF
-
-
-fi
-{ echo "$as_me:$LINENO: checking whether AI_NUMERICSERV is declared" >&5
-echo $ECHO_N "checking whether AI_NUMERICSERV is declared... $ECHO_C" >&6; }
-if test "${ac_cv_have_decl_AI_NUMERICSERV+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-int
-main ()
-{
-#ifndef AI_NUMERICSERV
-  (void) AI_NUMERICSERV;
-#endif
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_have_decl_AI_NUMERICSERV=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_have_decl_AI_NUMERICSERV=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_have_decl_AI_NUMERICSERV" >&5
-echo "${ECHO_T}$ac_cv_have_decl_AI_NUMERICSERV" >&6; }
-if test $ac_cv_have_decl_AI_NUMERICSERV = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_AI_NUMERICSERV 1
-_ACEOF
-
-
-else
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_AI_NUMERICSERV 0
-_ACEOF
-
-
-fi
-{ echo "$as_me:$LINENO: checking whether AI_V4MAPPED is declared" >&5
-echo $ECHO_N "checking whether AI_V4MAPPED is declared... $ECHO_C" >&6; }
-if test "${ac_cv_have_decl_AI_V4MAPPED+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-int
-main ()
-{
-#ifndef AI_V4MAPPED
-  (void) AI_V4MAPPED;
-#endif
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_have_decl_AI_V4MAPPED=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_have_decl_AI_V4MAPPED=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_have_decl_AI_V4MAPPED" >&5
-echo "${ECHO_T}$ac_cv_have_decl_AI_V4MAPPED" >&6; }
-if test $ac_cv_have_decl_AI_V4MAPPED = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_AI_V4MAPPED 1
-_ACEOF
-
-
-else
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_AI_V4MAPPED 0
-_ACEOF
-
-
-fi
-
-
-
-{ echo "$as_me:$LINENO: checking whether IPV6_V6ONLY is declared" >&5
-echo $ECHO_N "checking whether IPV6_V6ONLY is declared... $ECHO_C" >&6; }
-if test "${ac_cv_have_decl_IPV6_V6ONLY+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-int
-main ()
-{
-#ifndef IPV6_V6ONLY
-  (void) IPV6_V6ONLY;
-#endif
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (ac_try="$ac_compile"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_compile") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest.$ac_objext; then
-  ac_cv_have_decl_IPV6_V6ONLY=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	ac_cv_have_decl_IPV6_V6ONLY=no
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ echo "$as_me:$LINENO: result: $ac_cv_have_decl_IPV6_V6ONLY" >&5
-echo "${ECHO_T}$ac_cv_have_decl_IPV6_V6ONLY" >&6; }
-if test $ac_cv_have_decl_IPV6_V6ONLY = yes; then
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_IPV6_V6ONLY 1
-_ACEOF
-
-
-else
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_DECL_IPV6_V6ONLY 0
-_ACEOF
-
-
-fi
-
-
-
-{ echo "$as_me:$LINENO: checking for sendfile in sys/sendfile.h" >&5
-echo $ECHO_N "checking for sendfile in sys/sendfile.h... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <sys/sendfile.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "sendfile" >/dev/null 2>&1; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_LINUX_SENDFILE 1
-_ACEOF
- { echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-rm -f -r conftest*
-
-
-{ echo "$as_me:$LINENO: checking for sendfile in sys/socket.h" >&5
-echo $ECHO_N "checking for sendfile in sys/socket.h... $ECHO_C" >&6; }
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <sys/socket.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "sendfile" >/dev/null 2>&1; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_BSD_SENDFILE 1
-_ACEOF
- { echo "$as_me:$LINENO: result: yes" >&5
-echo "${ECHO_T}yes" >&6; }
-else
-  { echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6; }
-fi
-rm -f -r conftest*
-
-
-
-for ac_func in gethostent
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6; }
-if { as_var=$as_ac_var; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined __stub_$ac_func || defined __stub___$ac_func
-choke me
-#endif
-
-int
-main ()
-{
-return $ac_func ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (ac_try="$ac_link"
-case "(($ac_try" in
-  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
-  *) ac_try_echo=$ac_try;;
-esac
-eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
-  (eval "$ac_link") 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && {
-	 test -z "$ac_c_werror_flag" ||
-	 test ! -s conftest.err
-       } && test -s conftest$ac_exeext &&
-       $as_test_x conftest$ac_exeext; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-	eval "$as_ac_var=no"
-fi
-
-rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-ac_res=`eval echo '${'$as_ac_var'}'`
-	       { echo "$as_me:$LINENO: result: $ac_res" >&5
-echo "${ECHO_T}$ac_res" >&6; }
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
-
-for ac_func in accept4
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-{ echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6; }
-if { as_var=$as_ac_var; eval "test \"\${$as_var+set}\" = set"; }; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
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-
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-{
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-ac_abs_top_builddir=$ac_pwd
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-  $ac_cs_success || { (exit 1); exit 1; }
+# Generated by GNU Autoconf 2.69 for Haskell network package 2.3.0.14.
+#
+# Report bugs to <libraries@haskell.org>.
+#
+#
+# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+# Use a proper internal environment variable to ensure we don't fall
+  # into an infinite loop, continuously re-executing ourselves.
+  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+    _as_can_reexec=no; export _as_can_reexec;
+    # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+as_fn_exit 255
+  fi
+  # We don't want this to propagate to other subprocesses.
+          { _as_can_reexec=; unset _as_can_reexec;}
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1
+test -x / || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+  if (eval "$as_required") 2>/dev/null; then :
+  as_have_required=yes
+else
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir/$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+      if test "x$CONFIG_SHELL" != x; then :
+  export CONFIG_SHELL
+             # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
+fi
+
+    if test x$as_have_required = xno; then :
+  $as_echo "$0: This script requires a shell more modern than all"
+  $as_echo "$0: the shells that I found on your system."
+  if test x${ZSH_VERSION+set} = xset ; then
+    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    $as_echo "$0: Please tell bug-autoconf@gnu.org and
+$0: libraries@haskell.org about your system, including any
+$0: error possibly output before this message. Then install
+$0: a modern shell, or manually run the script under such a
+$0: shell if you do have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+  # already done that, so ensure we don't try to do so again and fall
+  # in an infinite loop.  This has already happened in practice.
+  _as_can_reexec=no; export _as_can_reexec
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+test -n "$DJDIR" || exec 7<&0 </dev/null
+exec 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='Haskell network package'
+PACKAGE_TARNAME='network'
+PACKAGE_VERSION='2.3.0.14'
+PACKAGE_STRING='Haskell network package 2.3.0.14'
+PACKAGE_BUGREPORT='libraries@haskell.org'
+PACKAGE_URL=''
+
+ac_unique_file="include/HsNet.h"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_STRING_H
+# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='LTLIBOBJS
+LIBOBJS
+EXTRA_SRCS
+EXTRA_LIBS
+EXTRA_CPPFLAGS
+CALLCONV
+EGREP
+GREP
+CPP
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
+host_os
+host_vendor
+host_cpu
+host
+build_os
+build_vendor
+build_cpu
+build
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+with_cc
+'
+      ac_precious_vars='build_alias
+host_alias
+target_alias
+CC
+CFLAGS
+LDFLAGS
+LIBS
+CPPFLAGS
+CPP'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval $ac_prev=\$ac_option
+    ac_prev=
+    continue
+  fi
+
+  case $ac_option in
+  *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *=)   ac_optarg= ;;
+  *)    ac_optarg=yes ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_dashdash$ac_option in
+  --)
+    ac_dashdash=yes ;;
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=*)
+    datadir=$ac_optarg ;;
+
+  -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+  | --dataroo | --dataro | --datar)
+    ac_prev=datarootdir ;;
+  -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+  | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+    datarootdir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=no ;;
+
+  -docdir | --docdir | --docdi | --doc | --do)
+    ac_prev=docdir ;;
+  -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+    docdir=$ac_optarg ;;
+
+  -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+    ac_prev=dvidir ;;
+  -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+    dvidir=$ac_optarg ;;
+
+  -enable-* | --enable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=\$ac_optarg ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+    ac_prev=htmldir ;;
+  -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+  | --ht=*)
+    htmldir=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  as_fn_error $? "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error $? "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error $? "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures Haskell network package 2.3.0.14 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking ...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/network]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of Haskell network package 2.3.0.14:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+C compiler
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  LIBS        libraries to pass to the linker, e.g. -l<library>
+  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
+              you have headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to <libraries@haskell.org>.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for guested configure.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+Haskell network package configure 2.3.0.14
+generated by GNU Autoconf 2.69
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } > conftest.i && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+    ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_check_header_mongrel LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists, giving a warning if it cannot be compiled using
+# the include files in INCLUDES and setting the cache variable VAR
+# accordingly.
+ac_fn_c_check_header_mongrel ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if eval \${$3+:} false; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+else
+  # Is the header compilable?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 usability" >&5
+$as_echo_n "checking $2 usability... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_header_compiler=yes
+else
+  ac_header_compiler=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_compiler" >&5
+$as_echo "$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 presence" >&5
+$as_echo_n "checking $2 presence... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <$2>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  ac_header_preproc=yes
+else
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
+$as_echo "$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in #((
+  yes:no: )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&5
+$as_echo "$as_me: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+  no:yes:* )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: present but cannot be compiled" >&5
+$as_echo "$as_me: WARNING: $2: present but cannot be compiled" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     check for missing prerequisite headers?" >&5
+$as_echo "$as_me: WARNING: $2:     check for missing prerequisite headers?" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: see the Autoconf documentation" >&5
+$as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&5
+$as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+( $as_echo "## ------------------------------------ ##
+## Report this to libraries@haskell.org ##
+## ------------------------------------ ##"
+     ) | sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  eval "$3=\$ac_header_compiler"
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_mongrel
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
+# that executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: program exited with status $ac_status" >&5
+       $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 test -x conftest$ac_exeext
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $2 (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
+
+# ac_fn_c_check_member LINENO AGGR MEMBER VAR INCLUDES
+# ----------------------------------------------------
+# Tries to find if the field MEMBER exists in type AGGR, after including
+# INCLUDES, setting cache variable VAR accordingly.
+ac_fn_c_check_member ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2.$3" >&5
+$as_echo_n "checking for $2.$3... " >&6; }
+if eval \${$4+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$5
+int
+main ()
+{
+static $2 ac_aggr;
+if (ac_aggr.$3)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$4=yes"
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$5
+int
+main ()
+{
+static $2 ac_aggr;
+if (sizeof ac_aggr.$3)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$4=yes"
+else
+  eval "$4=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$4
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_member
+
+# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES
+# ---------------------------------------------
+# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
+# accordingly.
+ac_fn_c_check_decl ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  as_decl_name=`echo $2|sed 's/ *(.*//'`
+  as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
+$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main ()
+{
+#ifndef $as_decl_name
+#ifdef __cplusplus
+  (void) $as_decl_use;
+#else
+  (void) $as_decl_name;
+#endif
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_decl
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by Haskell network package $as_me 2.3.0.14, which was
+generated by GNU Autoconf 2.69.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    $as_echo "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    $as_echo "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    $as_echo "## ----------------- ##
+## Output variables. ##
+## ----------------- ##"
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      $as_echo "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      $as_echo "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	$as_echo "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      $as_echo "## ----------- ##
+## confdefs.h. ##
+## ----------- ##"
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      $as_echo "$as_me: caught signal $ac_signal"
+    $as_echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+  # We do not want a PATH search for config.site.
+  case $CONFIG_SITE in #((
+    -*)  ac_site_file1=./$CONFIG_SITE;;
+    */*) ac_site_file1=$CONFIG_SITE;;
+    *)   ac_site_file1=./$CONFIG_SITE;;
+  esac
+elif test "x$prefix" != xNONE; then
+  ac_site_file1=$prefix/share/config.site
+  ac_site_file2=$prefix/etc/config.site
+else
+  ac_site_file1=$ac_default_prefix/share/config.site
+  ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+  test "x$ac_site_file" = xNONE && continue
+  if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file" \
+      || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special files
+  # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
+  if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+$as_echo "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+$as_echo "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+ac_includes_default="$ac_includes_default
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+# include <winsock2.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+# include <ws2tcpip.h>
+// fix for MingW not defining IPV6_V6ONLY
+# define IPV6_V6ONLY 27
+#endif
+#ifdef HAVE_WSPIAPI_H
+# include <wspiapi.h>
+#endif"
+
+# Safety check: Ensure that we are in the correct source directory.
+
+
+ac_config_headers="$ac_config_headers include/HsNetworkConfig.h"
+
+
+ac_aux_dir=
+for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
+  if test -f "$ac_dir/install-sh"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f "$ac_dir/install.sh"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  elif test -f "$ac_dir/shtool"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/shtool install -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  as_fn_error $? "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"  # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
+
+
+# Make sure we can run config.sub.
+$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
+  as_fn_error $? "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+$as_echo_n "checking build system type... " >&6; }
+if ${ac_cv_build+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_build_alias=$build_alias
+test "x$ac_build_alias" = x &&
+  ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
+test "x$ac_build_alias" = x &&
+  as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5
+ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
+  as_fn_error $? "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+$as_echo "$ac_cv_build" >&6; }
+case $ac_cv_build in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
+esac
+build=$ac_cv_build
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_build
+shift
+build_cpu=$1
+build_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+build_os=$*
+IFS=$ac_save_IFS
+case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+$as_echo_n "checking host system type... " >&6; }
+if ${ac_cv_host+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$host_alias" = x; then
+  ac_cv_host=$ac_cv_build
+else
+  ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
+    as_fn_error $? "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+$as_echo "$ac_cv_host" >&6; }
+case $ac_cv_host in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
+esac
+host=$ac_cv_host
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_host
+shift
+host_cpu=$1
+host_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+host_os=$*
+IFS=$ac_save_IFS
+case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+
+
+
+
+# Check whether --with-cc was given.
+if test "${with_cc+set}" = set; then :
+  withval=$with_cc; CC=$withval
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+$as_echo_n "checking whether the C compiler works... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+  esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link_default") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile.  We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+	then :; else
+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	fi
+	# We set ac_cv_exeext here because the later test for it is not
+	# safe: cross compilers may not add the suffix if given an `-o'
+	# argument, so we may need to know it at that point already.
+	# Even if this section looks crufty: it has the advantage of
+	# actually working.
+	break;;
+    * )
+	break;;
+  esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+  ac_file=''
+fi
+if test -z "$ac_file"; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+$as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdio.h>
+int
+main ()
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+  { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+  if { ac_try='./conftest$ac_cv_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details" "$LINENO" 5; }
+    fi
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if ${ac_cv_objext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  for ac_file in conftest.o conftest.obj conftest.*; do
+  test -f "$ac_file" || continue;
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if ${ac_cv_c_compiler_gnu+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if ${ac_cv_prog_cc_g+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if ${ac_cv_prog_cc_c89+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+struct stat;
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5
+$as_echo_n "checking for an ANSI C-conforming const... " >&6; }
+if ${ac_cv_c_const+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+#ifndef __cplusplus
+  /* Ultrix mips cc rejects this sort of thing.  */
+  typedef int charset[2];
+  const charset cs = { 0, 0 };
+  /* SunOS 4.1.1 cc rejects this.  */
+  char const *const *pcpcc;
+  char **ppc;
+  /* NEC SVR4.0.2 mips cc rejects this.  */
+  struct point {int x, y;};
+  static struct point const zero = {0,0};
+  /* AIX XL C 1.02.0.0 rejects this.
+     It does not let you subtract one const X* pointer from another in
+     an arm of an if-expression whose if-part is not a constant
+     expression */
+  const char *g = "string";
+  pcpcc = &g + (g ? g-g : 0);
+  /* HPUX 7.0 cc rejects these. */
+  ++pcpcc;
+  ppc = (char**) pcpcc;
+  pcpcc = (char const *const *) ppc;
+  { /* SCO 3.2v4 cc rejects this sort of thing.  */
+    char tx;
+    char *t = &tx;
+    char const *s = 0 ? (char *) 0 : (char const *) 0;
+
+    *t++ = 0;
+    if (s) return 0;
+  }
+  { /* Someone thinks the Sun supposedly-ANSI compiler will reject this.  */
+    int x[] = {25, 17};
+    const int *foo = &x[0];
+    ++foo;
+  }
+  { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
+    typedef const int *iptr;
+    iptr p = 0;
+    ++p;
+  }
+  { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
+       "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
+    struct s { int j; const int *ap[3]; } bx;
+    struct s *b = &bx; b->j = 5;
+  }
+  { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
+    const int foo = 10;
+    if (!foo) return 0;
+  }
+  return !cs[0] && !zero.x;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_c_const=yes
+else
+  ac_cv_c_const=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5
+$as_echo "$ac_cv_c_const" >&6; }
+if test $ac_cv_c_const = no; then
+
+$as_echo "#define const /**/" >>confdefs.h
+
+fi
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+$as_echo_n "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if ${ac_cv_prog_CPP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+$as_echo "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if ${ac_cv_path_GREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_GREP" || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if ${ac_cv_path_EGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_EGREP" || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if ${ac_cv_header_stdc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_header_stdc=yes
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then :
+  :
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in fcntl.h limits.h stdlib.h sys/types.h unistd.h winsock2.h ws2tcpip.h wspiapi.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+for ac_header in arpa/inet.h netdb.h netinet/in.h netinet/tcp.h sys/socket.h sys/uio.h sys/un.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_func in readlink symlink
+do :
+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+ac_fn_c_check_member "$LINENO" "struct msghdr" "msg_control" "ac_cv_member_struct_msghdr_msg_control" "#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#if HAVE_SYS_UIO_H
+# include <sys/uio.h>
+#endif
+"
+if test "x$ac_cv_member_struct_msghdr_msg_control" = xyes; then :
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_MSGHDR_MSG_CONTROL 1
+_ACEOF
+
+
+fi
+ac_fn_c_check_member "$LINENO" "struct msghdr" "msg_accrights" "ac_cv_member_struct_msghdr_msg_accrights" "#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#if HAVE_SYS_UIO_H
+# include <sys/uio.h>
+#endif
+"
+if test "x$ac_cv_member_struct_msghdr_msg_accrights" = xyes; then :
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS 1
+_ACEOF
+
+
+fi
+
+
+ac_fn_c_check_member "$LINENO" "struct sockaddr" "sa_len" "ac_cv_member_struct_sockaddr_sa_len" "#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+"
+if test "x$ac_cv_member_struct_sockaddr_sa_len" = xyes; then :
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_SOCKADDR_SA_LEN 1
+_ACEOF
+
+
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for in_addr_t in netinet/in.h" >&5
+$as_echo_n "checking for in_addr_t in netinet/in.h... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <netinet/in.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "in_addr_t" >/dev/null 2>&1; then :
+
+$as_echo "#define HAVE_IN_ADDR_T 1" >>confdefs.h
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f conftest*
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for SO_PEERCRED and struct ucred in sys/socket.h" >&5
+$as_echo_n "checking for SO_PEERCRED and struct ucred in sys/socket.h... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/socket.h>
+#ifndef SO_PEERCRED
+# error no SO_PEERCRED
+#endif
+struct ucred u;
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_ucred=yes
+else
+  ac_cv_ucred=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+if test "x$ac_cv_ucred" = xno; then
+    old_CFLAGS="$CFLAGS"
+    CFLAGS="-D_GNU_SOURCE $CFLAGS"
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/socket.h>
+#ifndef SO_PEERCRED
+# error no SO_PEERCRED
+#endif
+struct ucred u;
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_ucred=yes
+else
+  ac_cv_ucred=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    if test "x$ac_cv_ucred" = xyes; then
+        EXTRA_CPPFLAGS=-D_GNU_SOURCE
+    fi
+else
+    old_CFLAGS="$CFLAGS"
+fi
+if test "x$ac_cv_ucred" = xno; then
+    CFLAGS="$old_CFLAGS"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+else
+
+$as_echo "#define HAVE_STRUCT_UCRED 1" >>confdefs.h
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for _head_libws2_32_a in -lws2_32" >&5
+$as_echo_n "checking for _head_libws2_32_a in -lws2_32... " >&6; }
+if ${ac_cv_lib_ws2_32__head_libws2_32_a+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lws2_32  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char _head_libws2_32_a ();
+int
+main ()
+{
+return _head_libws2_32_a ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_ws2_32__head_libws2_32_a=yes
+else
+  ac_cv_lib_ws2_32__head_libws2_32_a=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ws2_32__head_libws2_32_a" >&5
+$as_echo "$ac_cv_lib_ws2_32__head_libws2_32_a" >&6; }
+if test "x$ac_cv_lib_ws2_32__head_libws2_32_a" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBWS2_32 1
+_ACEOF
+
+  LIBS="-lws2_32 $LIBS"
+
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for getaddrinfo" >&5
+$as_echo_n "checking for getaddrinfo... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int testme(){ getaddrinfo; }
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+$as_echo "#define HAVE_GETADDRINFO 1" >>confdefs.h
+ ac_have_getaddrinfo=yes; { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test "x$ac_have_getaddrinfo" = x; then
+  old_CFLAGS="$CFLAGS"
+  if test "z$ac_cv_lib_ws2_32__head_libws2_32_a" = zyes; then
+    CFLAGS="-DWINVER=0x0501 $CFLAGS"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getaddrinfo if WINVER is 0x0501" >&5
+$as_echo_n "checking for getaddrinfo if WINVER is 0x0501... " >&6; }
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+    int testme(){ getaddrinfo; }
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+$as_echo "#define HAVE_GETADDRINFO 1" >>confdefs.h
+
+$as_echo "#define NEED_WINVER_XP 1" >>confdefs.h
+ EXTRA_CPPFLAGS="-DWINVER=0x0501 $EXTRA_CPPFLAGS"; { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  CFLAGS="$old_CFLAGS"; { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  fi
+fi
+
+for ac_func in gai_strerror
+do :
+  ac_fn_c_check_func "$LINENO" "gai_strerror" "ac_cv_func_gai_strerror"
+if test "x$ac_cv_func_gai_strerror" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_GAI_STRERROR 1
+_ACEOF
+
+fi
+done
+
+
+ac_fn_c_check_decl "$LINENO" "AI_ADDRCONFIG" "ac_cv_have_decl_AI_ADDRCONFIG" "$ac_includes_default"
+if test "x$ac_cv_have_decl_AI_ADDRCONFIG" = xyes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_AI_ADDRCONFIG $ac_have_decl
+_ACEOF
+ac_fn_c_check_decl "$LINENO" "AI_ALL" "ac_cv_have_decl_AI_ALL" "$ac_includes_default"
+if test "x$ac_cv_have_decl_AI_ALL" = xyes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_AI_ALL $ac_have_decl
+_ACEOF
+ac_fn_c_check_decl "$LINENO" "AI_NUMERICSERV" "ac_cv_have_decl_AI_NUMERICSERV" "$ac_includes_default"
+if test "x$ac_cv_have_decl_AI_NUMERICSERV" = xyes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_AI_NUMERICSERV $ac_have_decl
+_ACEOF
+ac_fn_c_check_decl "$LINENO" "AI_V4MAPPED" "ac_cv_have_decl_AI_V4MAPPED" "$ac_includes_default"
+if test "x$ac_cv_have_decl_AI_V4MAPPED" = xyes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_AI_V4MAPPED $ac_have_decl
+_ACEOF
+
+
+ac_fn_c_check_decl "$LINENO" "IPV6_V6ONLY" "ac_cv_have_decl_IPV6_V6ONLY" "$ac_includes_default"
+if test "x$ac_cv_have_decl_IPV6_V6ONLY" = xyes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_IPV6_V6ONLY $ac_have_decl
+_ACEOF
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sendfile in sys/sendfile.h" >&5
+$as_echo_n "checking for sendfile in sys/sendfile.h... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/sendfile.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "sendfile" >/dev/null 2>&1; then :
+
+$as_echo "#define HAVE_LINUX_SENDFILE 1" >>confdefs.h
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f conftest*
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sendfile in sys/socket.h" >&5
+$as_echo_n "checking for sendfile in sys/socket.h... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/socket.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "sendfile" >/dev/null 2>&1; then :
+
+$as_echo "#define HAVE_BSD_SENDFILE 1" >>confdefs.h
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f conftest*
+
+
+for ac_func in gethostent
+do :
+  ac_fn_c_check_func "$LINENO" "gethostent" "ac_cv_func_gethostent"
+if test "x$ac_cv_func_gethostent" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_GETHOSTENT 1
+_ACEOF
+
+fi
+done
+
+
+for ac_func in accept4
+do :
+  ac_fn_c_check_func "$LINENO" "accept4" "ac_cv_func_accept4"
+if test "x$ac_cv_func_accept4" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_ACCEPT4 1
+_ACEOF
+
+fi
+done
+
+
+case "$host" in
+*-mingw32)
+	EXTRA_SRCS="cbits/initWinSock.c, cbits/winSockErr.c, cbits/asyncAccept.c"
+	EXTRA_LIBS=ws2_32
+	CALLCONV=stdcall ;;
+*-solaris2*)
+	EXTRA_SRCS="cbits/ancilData.c"
+	EXTRA_LIBS="nsl, socket"
+	CALLCONV=ccall ;;
+*)
+	EXTRA_SRCS="cbits/ancilData.c"
+	EXTRA_LIBS=
+	CALLCONV=ccall ;;
+esac
+
+
+
+
+
+ac_config_files="$ac_config_files network.buildinfo"
+
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    if test "x$cache_file" != "x/dev/null"; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+U=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+
+: "${CONFIG_STATUS=./config.status}"
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by Haskell network package $as_me 2.3.0.14, which was
+generated by GNU Autoconf 2.69.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+      --config     print configuration, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Report bugs to <libraries@haskell.org>."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_version="\\
+Haskell network package config.status 2.3.0.14
+configured by $0, generated by GNU Autoconf 2.69,
+  with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=?*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  --*=)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    $as_echo "$ac_cs_version"; exit ;;
+  --config | --confi | --conf | --con | --co | --c )
+    $as_echo "$ac_cs_config"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    '') as_fn_error $? "missing file argument" ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error $? "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
+    $as_echo "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "include/HsNetworkConfig.h") CONFIG_HEADERS="$CONFIG_HEADERS include/HsNetworkConfig.h" ;;
+    "network.buildinfo") CONFIG_FILES="$CONFIG_FILES network.buildinfo" ;;
+
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp= ac_tmp=
+  trap 'exit_status=$?
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+  N
+  s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+  || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=[	 ]*/{
+h
+s///
+s/^/:/
+s/[	 ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
+s/:*$//
+x
+s/\(=[	 ]*\).*/\1/
+G
+s/\n//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    "
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$ac_tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`$as_echo "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&2;}
+
+  rm -f "$ac_tmp/stdin"
+  case $ac_file in
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ ;;
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$ac_tmp/config.h" "$ac_file" \
+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error $? "could not create -" "$LINENO" 5
+  fi
+ ;;
+
+
+  esac
+
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit 1
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi
 
diff --git a/include/HsNet.h b/include/HsNet.h
--- a/include/HsNet.h
+++ b/include/HsNet.h
@@ -50,14 +50,11 @@
 extern void  shutdownWinSock();
 extern int   initWinSock ();
 extern const char* getWSErrorDescr(int err);
-
-# if !defined(__HUGS__)
 extern void* newAcceptParams(int sock,
 			     int sz,
 			     void* sockaddr);
 extern int   acceptNewSock(void* d);
 extern int   acceptDoProc(void* param);
-# endif
 
 #else
 
diff --git a/include/HsNetworkConfig.h b/include/HsNetworkConfig.h
--- a/include/HsNetworkConfig.h
+++ b/include/HsNetworkConfig.h
@@ -84,13 +84,13 @@
 /* Define to 1 if you have the <string.h> header file. */
 #define HAVE_STRING_H 1
 
-/* Define to 1 if `msg_accrights' is member of `struct msghdr'. */
+/* Define to 1 if `msg_accrights' is a member of `struct msghdr'. */
 /* #undef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
 
-/* Define to 1 if `msg_control' is member of `struct msghdr'. */
+/* Define to 1 if `msg_control' is a member of `struct msghdr'. */
 #define HAVE_STRUCT_MSGHDR_MSG_CONTROL 1
 
-/* Define to 1 if `sa_len' is member of `struct sockaddr'. */
+/* Define to 1 if `sa_len' is a member of `struct sockaddr'. */
 #define HAVE_STRUCT_SOCKADDR_SA_LEN 1
 
 /* Define to 1 if you have both SO_PEERCRED and struct ucred. */
@@ -140,6 +140,9 @@
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "network"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
 
 /* Define to the version of this package. */
 #define PACKAGE_VERSION "2.3.0.14"
diff --git a/include/HsNetworkConfig.h.in b/include/HsNetworkConfig.h.in
--- a/include/HsNetworkConfig.h.in
+++ b/include/HsNetworkConfig.h.in
@@ -83,13 +83,13 @@
 /* Define to 1 if you have the <string.h> header file. */
 #undef HAVE_STRING_H
 
-/* Define to 1 if `msg_accrights' is member of `struct msghdr'. */
+/* Define to 1 if `msg_accrights' is a member of `struct msghdr'. */
 #undef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
 
-/* Define to 1 if `msg_control' is member of `struct msghdr'. */
+/* Define to 1 if `msg_control' is a member of `struct msghdr'. */
 #undef HAVE_STRUCT_MSGHDR_MSG_CONTROL
 
-/* Define to 1 if `sa_len' is member of `struct sockaddr'. */
+/* Define to 1 if `sa_len' is a member of `struct sockaddr'. */
 #undef HAVE_STRUCT_SOCKADDR_SA_LEN
 
 /* Define to 1 if you have both SO_PEERCRED and struct ucred. */
@@ -139,6 +139,9 @@
 
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
 
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
diff --git a/network.cabal b/network.cabal
--- a/network.cabal
+++ b/network.cabal
@@ -1,5 +1,5 @@
 name:           network
-version:        2.4.0.1
+version:        2.4.1.0
 license:        BSD3
 license-file:   LICENSE
 maintainer:     Johan Tibell <johan.tibell@gmail.com>
@@ -32,6 +32,7 @@
     Network.URI
   other-modules:
     Network.Socket.ByteString.Internal
+    Network.Socket.Types
 
   if !os(windows)
     other-modules:
diff --git a/tests/uri001.hs b/tests/uri001.hs
--- a/tests/uri001.hs
+++ b/tests/uri001.hs
@@ -16,6 +16,15 @@
 --
 --  This Module contains test cases for module URI.
 --
+--  To run this test without using Cabal to build the package
+--  (2013-01-05, instructions tested on MacOS):
+--  1. Install Haskell platform
+--  2. cabal install test-framework
+--  3. cabal install test-framework-hunit
+--  4. ghc -XDeriveDataTypeable -D"MIN_VERSION_base(x,y,z)=1" ../Network/URI.hs uri001.hs
+--  5. ./uri001
+--
+--  Previous build instructions:
 --  Using GHC, I compile with this command line:
 --  ghc --make -fglasgow-exts
 --      -i..\;C:\Dev\Haskell\Lib\HUnit;C:\Dev\Haskell\Lib\Parsec
@@ -220,7 +229,23 @@
 testURIRef119 = testURIRef AbsId "http://192.168.0.1.example.com./"
 -- URI prefixed with 3 octets of an IPv4 address and a subdomain part with a leading digit.
 testURIRef120 = testURIRef AbsId "http://192.168.0.1test.example.com/"
+-- URI with IPv(future) address
+testURIRef121 = testURIRef AbsId "http://[v9.123.abc;456.def]/"
+testURIRef122 = testEq "v.future authority" 
+                       (Just (URIAuth "" "[v9.123.abc;456.def]" ":42"))
+                       ((maybe Nothing uriAuthority) . parseURI $ "http://[v9.123.abc;456.def]:42/") 
+-- URI with non-ASCII characters, fail with Network.HTTP escaping code (see below)
+-- Currently not supported by Network.URI, but captured here for possible future reference
+-- when IRI support may be added.
+testURIRef123 = testURIRef AbsId "http://example.com/test123/䡥汬漬⁗潲汤/index.html"
+testURIRef124 = testURIRef AbsId "http://example.com/test124/Москва/index.html"
 
+-- From report by Alexander Ivanov:
+-- should return " 䡥汬漬⁗潲汤", but returns "Hello, World" instead
+-- print $ urlDecode $ urlEncode " 䡥汬漬⁗潲汤"
+-- should return "Москва"
+-- print $ urlDecode $ urlEncode "Москва"
+
 testURIRefSuite = TF.testGroup "Test URIrefs" testURIRefList
 testURIRefList =
   [ TF.testCase "testURIRef001" testURIRef001
@@ -344,6 +369,12 @@
   , TF.testCase "testURIRef118" testURIRef118
   , TF.testCase "testURIRef119" testURIRef119
   , TF.testCase "testURIRef120" testURIRef120
+    --
+  , TF.testCase "testURIRef121" testURIRef121
+  , TF.testCase "testURIRef122" testURIRef122
+    -- IRI test cases not currently supported
+  -- , TF.testCase "testURIRef123" testURIRef123
+  -- , TF.testCase "testURIRef124" testURIRef124
   ]
 
 -- test decomposition of URI into components