diff --git a/CHANGELOG.md b/CHANGELOG.md --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,5 +1,43 @@ # CHANGELOG for network +## Version 3.2.10.0 + +* Multicast support + [#614](https://github.com/haskell/network/pull/614) +* Support for getHostName + [#621](https://github.com/haskell/network/pull/621) +* Adding acceptWith, recvWith, recvFromWith, recvBufWith and recvBufFromWith, which take an STM action + beside the operation and let the caller give up on it without closing + the socket or interrupting the thread, and withReadable, which they are + built from. +* Adding isClosedSocketError and isTransientAcceptError, which name what + an accept loop has to tell apart: a socket closed under it, one queued + connection which failed, and the rest. +* On Windows, the Winsock error code is kept in ioe_errno rather than + dropped. Winsock reports every error as OtherError, so the code was + the only thing telling them apart and it was only in the description. + isClosedSocketError and isTransientAcceptError read it, so an accept + loop there now stops when its socket is closed and retries a + connection the peer gave up on. +* gracefulClose waits for the peer's FIN through recvBufWith, which is + one code path on every platform, and drains what arrived before it up + to 128 KiB rather than reading once: data left unread makes close send + RST. It therefore keeps to its timeout on Windows, where + System.Timeout cannot cut a receive short and a peer which stayed open + and silent used to hold the caller for as long as it did. +* gracefulClose reads its timeout as the milliseconds it is documented + to be without an event manager. System.Timeout takes microseconds, so + it was a thousandth of what was asked for. +* On Windows, a datagram socket hears an ICMP unreachable which a send + of its own caused only once it is connected, as on POSIX. Winsock + reports it to every datagram socket, so one reply bouncing off a + client which had gone ended a server's receive loop; socket turns that + off and connect turns it back on. +* The readiness based waitReadSocketSTM and waitWriteSocketSTM cannot + work on Windows, where completion ports report that an operation has + finished rather than that one could be started, and now say so + instead of blocking forever. + ## Version 3.2.9.0 * Exporting recvBufNoWait. diff --git a/Network/Socket.hs b/Network/Socket.hs --- a/Network/Socket.hs +++ b/Network/Socket.hs @@ -112,7 +112,6 @@ getAddrInfo, -- ** Types - HostName, ServiceName, AddrInfo (..), defaultHints, @@ -170,7 +169,12 @@ DontFragment, RecvIPv6HopLimit, RecvIPv6TClass, - RecvIPv6PktInfo + RecvIPv6PktInfo, + MulticastIF, + MulticastTTL, + MulticastLoop, + AddMembership, + DropMembership ), isSupportedSocketOption, whenSupported, @@ -333,6 +337,10 @@ getNameInfo, NameInfoFlag (..), + -- * Host name information + getHostName, + HostName, + -- * Low level -- ** socket operations @@ -391,7 +399,20 @@ -- * Special constants maxListenQueue, - -- * STM to check read and write + -- * Event polling + -- $eventpolling + + -- ** Giving up on a blocked operation + withReadable, + acceptWith, + recvBufWith, + recvBufFromWith, + + -- ** What a given-up operation can fail with + isClosedSocketError, + isTransientAcceptError, + + -- ** Waiting for readiness (POSIX only) waitReadSocketSTM, waitAndCancelReadSocketSTM, waitWriteSocketSTM, @@ -399,8 +420,12 @@ -- * Deprecated withSocketsDo, -) where + -- * Multicast Group + MulticastGroup (..), +) +where + import Network.Socket.Buffer hiding ( recvBufFrom, recvBufMsg, @@ -413,6 +438,11 @@ import Network.Socket.Handle import Network.Socket.If import Network.Socket.Info +#if !defined(mingw32_HOST_OS) +import Network.Socket.Posix.HostName(getHostName) +#else +import Network.Socket.Win32.HostName(getHostName) +#endif import Network.Socket.Internal import Network.Socket.Name hiding (getPeerName, getSocketName) import Network.Socket.Options @@ -422,8 +452,58 @@ import Network.Socket.Syscall hiding (accept, bind, connect) import Network.Socket.Types import Network.Socket.Unix +import Network.Socket.Wait ( + recvBufFromWith, + isClosedSocketError, + isTransientAcceptError, + recvBufWith, + withReadable, + ) #if !defined(mingw32_HOST_OS) import Network.Socket.Posix.Cmsg #else import Network.Socket.Win32.Cmsg #endif + +-- $eventpolling +-- +-- A thread blocked on a socket is stopped here by being told, not by +-- having the socket closed under it and not by an asynchronous exception +-- thrown into it. Each of 'withReadable', 'acceptWith', 'recvBufWith' +-- and 'recvBufFromWith' takes an 'Control.Concurrent.STM.STM' action +-- beside the operation; whichever settles first decides, 'Left' when the +-- caller gave up and 'Right' when the operation completed, and an +-- operation which has completed wins a tie. They are for one reader at +-- a time, and 'withReadable' says what else they ask of the caller. +-- +-- The other two ways are going away or gone. A close ends a wait only +-- because the event manager tells the waiter so, which 'GHC.Conc.closeFdWith' +-- is to stop doing, and a descriptor number is reused; an asynchronous +-- exception does not reach a thread blocked in a socket call on Windows +-- at all. +-- +-- A server loop which is told to stop, rather than having its listening +-- socket closed under it: +-- +-- > stopping <- newTVarIO False +-- > -- the shutdown handler runs: atomically $ writeTVar stopping True +-- > let loop = acceptWith sock (check =<< readTVar stopping) >>= \case +-- > Left () -> return () +-- > Right (conn, _) -> forkIO (serve conn) >> loop +-- +-- A receive which gives up on a deadline, where 'System.Timeout.timeout' +-- cannot cut one short: +-- +-- > late <- registerDelay (milliseconds * 1000) +-- > r <- recvBufWith s buf size (check =<< readTVar late) +-- +-- The 'Control.Concurrent.STM.STM' action is run more than once, so it +-- has to be a test rather than something which takes what it reads. +-- +-- Readiness, which these are built from on POSIX, is not available on +-- Windows: completion ports report that an operation finished, not that +-- one could be started. The four readiness functions say so rather than +-- blocking for good, and what runs there instead is the operation itself, +-- on a thread of its own, cancelled with @CancelIoEx@ when the caller +-- gives up. "Network.Socket.ByteString" has @recvWith@ and +-- @recvFromWith@ for 'Data.ByteString.ByteString'. diff --git a/Network/Socket/Address.hs b/Network/Socket/Address.hs --- a/Network/Socket/Address.hs +++ b/Network/Socket/Address.hs @@ -9,11 +9,14 @@ connect, bind, accept, + acceptWith, -- * Sending and receiving ByteString sendTo, sendAllTo, recvFrom, + recvWith, + recvFromWith, -- * Sending and receiving data from a buffer sendBufTo, @@ -29,3 +32,4 @@ import Network.Socket.Name import Network.Socket.Syscall import Network.Socket.Types +import Network.Socket.Wait diff --git a/Network/Socket/ByteString.hs b/Network/Socket/ByteString.hs --- a/Network/Socket/ByteString.hs +++ b/Network/Socket/ByteString.hs @@ -32,15 +32,23 @@ -- * Receive data from a socket recv, recvFrom, + recvWith, + recvFromWith, -- * Advanced send and recv sendMsg, recvMsg, ) where +import Control.Concurrent.STM (STM) import Data.ByteString (ByteString) -import Network.Socket.ByteString.IO hiding (recvFrom, sendAllTo, sendTo) +import Network.Socket.ByteString.IO hiding ( + recvFrom, + recvFromWith, + sendAllTo, + sendTo, + ) import qualified Network.Socket.ByteString.IO as G import Network.Socket.Types @@ -89,3 +97,10 @@ -- 'SockAddr' representing the address of the sending socket. recvFrom :: Socket -> Int -> IO (ByteString, SockAddr) recvFrom = G.recvFrom + +-- | 'recvFrom' which the caller can give up on. +-- +-- @since 3.2.10.0 +recvFromWith + :: Socket -> Int -> STM a -> IO (Either a (ByteString, SockAddr)) +recvFromWith = G.recvFromWith diff --git a/Network/Socket/ByteString/IO.hsc b/Network/Socket/ByteString/IO.hsc --- a/Network/Socket/ByteString/IO.hsc +++ b/Network/Socket/ByteString/IO.hsc @@ -29,6 +29,8 @@ -- * Receive data from a socket , recv , recvFrom + , recvWith + , recvFromWith , waitWhen0 -- * Advanced send and recv @@ -45,10 +47,13 @@ import Data.ByteString.Unsafe (unsafeUseAsCStringLen) import Foreign.Marshal.Alloc (allocaBytes) +import Control.Concurrent.STM (STM, atomically, orElse) + import Network.Socket.Buffer import Network.Socket.ByteString.Internal import Network.Socket.Imports import Network.Socket.Types +import Network.Socket.Wait import Data.ByteString.Internal (create, ByteString(..)) import Foreign.ForeignPtr (withForeignPtr) @@ -276,6 +281,47 @@ str <- B.packCStringLen (ptr, len) return (str, sockaddr) +-- | 'recv' which the caller can give up on. Whichever settles first +-- decides: 'Left' when the 'STM' action fires, 'Right' when data +-- arrives. Data already waiting is taken without blocking at all and +-- so wins over a caller which has given up, as a completed operation +-- does in 'Network.Socket.withReadable'; the give-up is read there +-- and nowhere else. +-- +-- @since 3.2.10.0 +recvWith :: Socket -> Int -> STM a -> IO (Either a ByteString) +recvWith s nbytes giveUp + | nbytes < 0 = + ioError $ mkInvalidRecvArgError "Network.Socket.ByteString.recvWith" + | otherwise = do + bs <- createAndTrim' nbytes $ \ptr -> recvBufNoWait s ptr nbytes + case bs of + Just b -> return $ Right b + Nothing -> withReadable s giveUp $ recv s nbytes + +-- | 'recvFrom' which the caller can give up on. +-- +-- @since 3.2.10.0 +recvFromWith + :: SocketAddress sa + => Socket + -> Int + -> STM a + -> IO (Either a (ByteString, sa)) +recvFromWith s nbytes giveUp = withReadable s giveUp $ recvFrom s nbytes + +-- A read which never waits: 'Nothing' when nothing is there yet. +createAndTrim' :: Int -> (Ptr Word8 -> IO Int) -> IO (Maybe ByteString) +createAndTrim' nbytes f = do + (len, bs) <- allocaBytes nbytes $ \ptr -> do + len <- f ptr + if len > 0 + then do + b <- B.packCStringLen (castPtr ptr, len) + return (len, b) + else return (len, B.empty) + return $ if len >= 0 then Just bs else Nothing + -- ---------------------------------------------------------------------------- -- Not exported @@ -343,3 +389,4 @@ let bs' | len < siz = PS fptr 0 len | otherwise = bs return (addr, bs', cmsgs, flags') + diff --git a/Network/Socket/Cbits.hsc b/Network/Socket/Cbits.hsc --- a/Network/Socket/Cbits.hsc +++ b/Network/Socket/Cbits.hsc @@ -13,6 +13,34 @@ #if defined(mingw32_HOST_OS) wsaNotInitialized :: CInt wsaNotInitialized = #const WSANOTINITIALISED +-- | Whether a datagram socket reports an ICMP unreachable which came +-- back from an earlier send. Winsock turns it on by default. +sioUDPConnReset :: Word32 +sioUDPConnReset = #const SIO_UDP_CONNRESET +-- | What closesocket gives a call already blocked on the socket. +wsaEINTR :: CInt +wsaEINTR = #const WSAEINTR +-- | What a socket operation gives once the socket has been closed. +wsaENOTSOCK :: CInt +wsaENOTSOCK = #const WSAENOTSOCK +-- | What accept() gives for a connection the peer gave up on. Winsock +-- names WSAECONNRESET where accept(2) names ECONNABORTED. +wsaECONNABORTED :: CInt +wsaECONNABORTED = #const WSAECONNABORTED +wsaECONNRESET :: CInt +wsaECONNRESET = #const WSAECONNRESET +wsaENETDOWN :: CInt +wsaENETDOWN = #const WSAENETDOWN +wsaENETRESET :: CInt +wsaENETRESET = #const WSAENETRESET +wsaENETUNREACH :: CInt +wsaENETUNREACH = #const WSAENETUNREACH +wsaEHOSTDOWN :: CInt +wsaEHOSTDOWN = #const WSAEHOSTDOWN +wsaEHOSTUNREACH :: CInt +wsaEHOSTUNREACH = #const WSAEHOSTUNREACH +wsaENOPROTOOPT :: CInt +wsaENOPROTOOPT = #const WSAENOPROTOOPT #else fGetFd :: CInt fGetFd = #const F_GETFD diff --git a/Network/Socket/Internal.hs b/Network/Socket/Internal.hs --- a/Network/Socket/Internal.hs +++ b/Network/Socket/Internal.hs @@ -61,9 +61,9 @@ import Control.Exception (evaluate) import System.IO.Unsafe (unsafePerformIO) # if __GLASGOW_HASKELL__ >= 707 -import GHC.IO.Exception (IOErrorType(..)) +import GHC.IO.Exception (IOErrorType(..), IOException(..)) # else -import GHC.IOBase (IOErrorType(..)) +import GHC.IOBase (IOErrorType(..), IOException(..)) # endif import System.IO.Error (ioeSetErrorString, mkIOError) #else @@ -93,13 +93,16 @@ -- | Like 'throwSocketError', but the error code is supplied as an argument. -- --- On Windows, do not use errno. Use a system error code instead. +-- On Windows the code is a Winsock error code rather than an errno. It +-- is kept in 'ioe_errno' all the same: Winsock reports every error as +-- 'OtherError', so the code is the only thing which tells them apart. throwSocketErrorCode :: String -> CInt -> IO a #if defined(mingw32_HOST_OS) throwSocketErrorCode name rc = do pstr <- c_getWSError rc str <- peekCString pstr - ioError (ioeSetErrorString (mkIOError OtherError name Nothing Nothing) str) + let ioe = (mkIOError OtherError name Nothing Nothing){ioe_errno = Just rc} + ioError (ioeSetErrorString ioe str) #else throwSocketErrorCode loc errno = ioError (errnoToIOError loc (Errno errno) Nothing Nothing) diff --git a/Network/Socket/Options.hsc b/Network/Socket/Options.hsc --- a/Network/Socket/Options.hsc +++ b/Network/Socket/Options.hsc @@ -18,6 +18,7 @@ ,UseLoopBack,UserTimeout,IPv6Only ,RecvIPv4TTL,RecvIPv4TOS,RecvIPv4PktInfo,DontFragment ,RecvIPv6HopLimit,RecvIPv6TClass,RecvIPv6PktInfo + ,MulticastIF,MulticastTTL,MulticastLoop,AddMembership,DropMembership ,CustomSockOpt) , isSupportedSocketOption , whenSupported @@ -396,6 +397,48 @@ pattern RecvIPv6PktInfo = SockOpt (-1) (-1) #endif #endif // HAVE_DECL_IPPROTO_IPV6 + +-- | Multicast interface. +#ifdef IP_MULTICAST_IF +pattern MulticastIF :: SocketOption +pattern MulticastIF = SockOpt (#const IPPROTO_IP) (#const IP_MULTICAST_IF) +#else +pattern MulticastIF :: SocketOption +pattern MulticastIF = SockOpt (-1) (-1) +#endif +-- | Multicast TTL. +#ifdef IP_MULTICAST_TTL +pattern MulticastTTL :: SocketOption +pattern MulticastTTL = SockOpt (#const IPPROTO_IP) (#const IP_MULTICAST_TTL) +#else +pattern MulticastTTL :: SocketOption +pattern MulticastTTL = SockOpt (-1) (-1) +#endif +-- | Multicast loopback. +#ifdef IP_MULTICAST_LOOP +pattern MulticastLoop :: SocketOption +pattern MulticastLoop = SockOpt (#const IPPROTO_IP) (#const IP_MULTICAST_LOOP) +#else +pattern MulticastLoop :: SocketOption +pattern MulticastLoop = SockOpt (-1) (-1) +#endif +-- | Add membership. +#ifdef IP_ADD_MEMBERSHIP +pattern AddMembership :: SocketOption +pattern AddMembership = SockOpt (#const IPPROTO_IP) (#const IP_ADD_MEMBERSHIP) +#else +pattern AddMembership :: SocketOption +pattern AddMembership = SockOpt (-1) (-1) +#endif +-- | Drop membership. +#ifdef IP_DROP_MEMBERSHIP +pattern DropMembership :: SocketOption +pattern DropMembership = SockOpt (#const IPPROTO_IP) (#const IP_DROP_MEMBERSHIP) +#else +pattern DropMembership :: SocketOption +pattern DropMembership = SockOpt (-1) (-1) +#endif + pattern CustomSockOpt :: (CInt, CInt) -> SocketOption pattern CustomSockOpt xy <- ((\(SockOpt x y) -> (x, y)) -> xy) diff --git a/Network/Socket/Posix/HostName.hsc b/Network/Socket/Posix/HostName.hsc new file mode 100644 --- /dev/null +++ b/Network/Socket/Posix/HostName.hsc @@ -0,0 +1,25 @@ +module Network.Socket.Posix.HostName ( + getHostName, +) +where + +#include "HsNet.h" + +import Foreign.C.Error +import Foreign.C.String +import Foreign.C.Types +import Foreign.Marshal.Array +import Network.Socket.Info (HostName) + +foreign import ccall unsafe "gethostname" + gethostname :: CString -> CSize -> IO CInt + +-- | Get name of current host +-- +-- Since: 3.3.0.0 +getHostName :: IO HostName +getHostName = allocaArray0 size $ \cstr -> do + throwErrnoIfMinus1_ "getHostName" $ gethostname cstr (fromIntegral size) + peekCString cstr + where + size = 256 diff --git a/Network/Socket/STM.hs b/Network/Socket/STM.hs --- a/Network/Socket/STM.hs +++ b/Network/Socket/STM.hs @@ -1,24 +1,72 @@ -module Network.Socket.STM where +{-# LANGUAGE CPP #-} -import Control.Concurrent -import Control.Concurrent.STM +-- | Waiting for a socket to become ready, through STM. +-- +-- This mirrors @select@\/@epoll@ and is __POSIX only__: Windows +-- completion ports report that an operation has finished, not that one +-- could be started, so there is no readiness to wait for. All four +-- throw there. What runs on Windows instead is +-- "Network.Socket.Win32.Cancel", through 'Network.Socket.withReadable'. +-- +module Network.Socket.STM ( + -- * Waiting for readiness (POSIX only) + waitReadSocketSTM, + waitAndCancelReadSocketSTM, + waitWriteSocketSTM, + waitAndCancelWriteSocketSTM, +) where + +import Control.Concurrent.STM (STM) import Network.Socket.Types -import System.Posix.Types +#if !defined(mingw32_HOST_OS) +import Control.Concurrent (threadWaitReadSTM, threadWaitWriteSTM) +import System.Posix.Types (Fd (..)) +#endif -- | STM action to wait until the socket is ready for reading. +-- +-- __POSIX only.__ On Windows this throws: completion ports have no +-- notion of readiness. Use 'Network.Socket.recvBufWith', or one of +-- the other operations which give up, instead. waitReadSocketSTM :: Socket -> IO (STM ()) waitReadSocketSTM s = fst <$> waitAndCancelReadSocketSTM s -- | STM action to wait until the socket is ready for reading and STM -- action to cancel the waiting. +-- +-- __POSIX only.__ See 'waitReadSocketSTM'. waitAndCancelReadSocketSTM :: Socket -> IO (STM (), IO ()) +#if defined(mingw32_HOST_OS) +waitAndCancelReadSocketSTM _ = + ioError $ + userError $ + "waitAndCancelReadSocketSTM: Windows completion ports do not " + ++ "provide readiness notification; use recvBufWith or " + ++ "Network.Socket.ByteString.recvWith instead" +#else waitAndCancelReadSocketSTM s = withFdSocket s $ threadWaitReadSTM . Fd +#endif -- | STM action to wait until the socket is ready for writing. +-- +-- __POSIX only.__ On Windows this throws. Completion ports give no +-- way to ask whether a send would block, and none is needed: issue +-- the send and let it complete asynchronously. waitWriteSocketSTM :: Socket -> IO (STM ()) waitWriteSocketSTM s = fst <$> waitAndCancelWriteSocketSTM s -- | STM action to wait until the socket is ready for writing and STM -- action to cancel the waiting. +-- +-- __POSIX only.__ See 'waitWriteSocketSTM'. waitAndCancelWriteSocketSTM :: Socket -> IO (STM (), IO ()) +#if defined(mingw32_HOST_OS) +waitAndCancelWriteSocketSTM _ = + ioError $ + userError $ + "waitAndCancelWriteSocketSTM: Windows completion ports do not " + ++ "provide readiness notification, and none is needed for " + ++ "sending: issue the send instead" +#else waitAndCancelWriteSocketSTM s = withFdSocket s $ threadWaitWriteSTM . Fd +#endif diff --git a/Network/Socket/Shutdown.hs b/Network/Socket/Shutdown.hs --- a/Network/Socket/Shutdown.hs +++ b/Network/Socket/Shutdown.hs @@ -9,21 +9,17 @@ , gracefulClose ) where -import Control.Concurrent (yield) +import Control.Concurrent (rtsSupportsBoundThreads, yield) +import Control.Concurrent.STM import qualified Control.Exception as E import Foreign.Marshal.Alloc (mallocBytes, free) import System.Timeout -#if !defined(mingw32_HOST_OS) -import Control.Concurrent.STM -import qualified GHC.Event as Ev -#endif - import Network.Socket.Buffer import Network.Socket.Imports import Network.Socket.Internal -import Network.Socket.STM import Network.Socket.Types +import Network.Socket.Wait data ShutdownCmd = ShutdownReceive | ShutdownSend @@ -69,52 +65,40 @@ -- Waiting TCP FIN. E.bracket (mallocBytes bufSize) free (recvEOF s tmout0) +-- Waiting for the peer's FIN, draining what arrives before it. The +-- receive is given up on rather than interrupted: an asynchronous +-- exception does not reach a thread blocked in one on Windows. recvEOF :: Socket -> Int -> Ptr Word8 -> IO () -#if !defined(mingw32_HOST_OS) -recvEOF s tmout0 buf = do - mevmgr <- Ev.getSystemEventManager - case mevmgr of - Nothing -> recvEOFtimeout s tmout0 buf - Just _ -> recvEOFevent s tmout0 buf -#else -recvEOF = recvEOFtimeout -#endif +recvEOF s tmout0 buf + | not rtsSupportsBoundThreads = recvEOFtimeout s tmout0 buf + | otherwise = do + -- millisecond to microsecond + late <- registerDelay $ tmout0 * 1000 + loop late 0 + where + loop late n0 = do + r <- E.try $ recvBufWith s buf bufSize $ check =<< readTVar late + case r of + Left (_ :: E.IOException) -> return () + -- The deadline. + Right (Left ()) -> return () + Right (Right n1) -> when (n1 > 0) $ do + let n = n0 + n1 + when (n < drainLimit) $ loop late n +-- registerDelay needs -threaded, and so does the give-up on Windows -- +-- where this cannot cut a receive short either, but nothing else works +-- there without it. +recvEOFtimeout :: Socket -> Int -> Ptr Word8 -> IO () +-- millisecond to microsecond +recvEOFtimeout s tmout0 buf = void $ timeout (tmout0 * 1000) $ recvBuf s buf bufSize + -- Don't use 4092 here. The GHC runtime takes the global lock -- if the length is over 3276 bytes in 32bit or 3272 bytes in 64bit. bufSize :: Int bufSize = 1024 -recvEOFtimeout :: Socket -> Int -> Ptr Word8 -> IO () -recvEOFtimeout s tmout0 buf = void $ timeout tmout0 $ recvBuf s buf bufSize - -#if !defined(mingw32_HOST_OS) -data Wait = MoreData | TimeoutTripped - -recvEOFevent :: Socket -> Int -> Ptr Word8 -> IO () -recvEOFevent s tmout0 buf = do - tmmgr <- Ev.getSystemTimerManager - tvar <- newTVarIO False - E.bracket (setupTimeout tmmgr tvar) (cancelTimeout tmmgr) $ \_ -> do - E.bracket (setupRead s) cancelRead $ \(rxWait,_) -> do - let toWait = readTVar tvar >>= check - wait = atomically ((toWait >> return TimeoutTripped) - <|> (rxWait >> return MoreData)) - waitRes <- wait - case waitRes of - TimeoutTripped -> return () - -- We don't check the (positive) length. - -- In normal case, it's 0. That is, only FIN is received. - -- In error cases, data is available. But there is no - -- application which can read it. So, let's stop receiving - -- to prevent attacks. - MoreData -> void $ recvBufNoWait s buf bufSize - where - -- millisecond to microsecond - tmout = tmout0 * 1000 - setupTimeout tmmgr tvar = - Ev.registerTimeout tmmgr tmout $ atomically $ writeTVar tvar True - cancelTimeout = Ev.unregisterTimeout - setupRead = waitAndCancelReadSocketSTM - cancelRead (_,cancel) = cancel -#endif +-- Data left unread makes close send RST rather than FIN, so what has +-- arrived is drained -- but only this far: nothing is going to read it. +drainLimit :: Int +drainLimit = 128 * 1024 diff --git a/Network/Socket/SockAddr.hs b/Network/Socket/SockAddr.hs --- a/Network/Socket/SockAddr.hs +++ b/Network/Socket/SockAddr.hs @@ -6,12 +6,14 @@ connect, bind, accept, + acceptWith, sendBufTo, recvBufFrom, sendBufMsg, recvBufMsg, ) where +import Control.Concurrent.STM (STM) import Control.Exception (IOException, throwIO, try) import System.Directory (removeFile) import System.IO.Error (isAlreadyInUseError, isDoesNotExistError) @@ -21,6 +23,7 @@ import Network.Socket.Imports import qualified Network.Socket.Name as G import qualified Network.Socket.Syscall as G +import qualified Network.Socket.Wait as G #if !defined(mingw32_HOST_OS) import Network.Socket.Posix.Cmsg #else @@ -74,6 +77,14 @@ -- On Unix, FD_CLOEXEC is set to the new 'Socket'. accept :: Socket -> IO (Socket, SockAddr) accept = G.accept + +-- | 'accept' which the caller can give up on. Whichever settles +-- first decides: 'Left' when the 'STM' action fires, 'Right' when a +-- connection arrives. +-- +-- @since 3.2.10.0 +acceptWith :: Socket -> STM a -> IO (Either a (Socket, SockAddr)) +acceptWith = G.acceptWith -- | Send data to the socket. The recipient can be specified -- explicitly, so the socket need not be in a connected state. diff --git a/Network/Socket/Syscall.hs b/Network/Socket/Syscall.hs --- a/Network/Socket/Syscall.hs +++ b/Network/Socket/Syscall.hs @@ -13,7 +13,9 @@ #if defined(mingw32_HOST_OS) import Control.Exception (bracket) import Foreign (FunPtr) +import Foreign.Marshal.Alloc (alloca) import GHC.Conc (asyncDoProc) +import Network.Socket.Cbits #else import Foreign.C.Error (getErrno, eINTR, eINPROGRESS) import GHC.Conc (threadWaitWrite) @@ -84,6 +86,7 @@ -- So, we don't have to call "close" which uses "closeFdWith". unsetIPv6Only s setDontFragment s + unsetConnReset s return s where create = do @@ -129,7 +132,28 @@ return () #endif + unsetConnReset s = when (stype == Datagram) $ reportConnReset s False +-- Whether the socket reports the ICMP unreachable an earlier send of its +-- own caused. Winsock reports it to the next receive even on a socket +-- which was never connected, where POSIX says nothing of it at all: one +-- reply bouncing off a client which has gone ends a server's receive +-- loop. 'socket' therefore turns it off and 'connect' turns it back on, +-- which is the ECONNREFUSED POSIX gives a connected datagram socket. +-- +-- It is advice for datagrams alone and does nothing to any other socket, +-- so the result is not worth looking at. +reportConnReset :: Socket -> Bool -> IO () +#if defined(mingw32_HOST_OS) +reportConnReset s report = + with (if report then 1 else 0 :: Word32) $ \val -> + alloca $ \ret -> + void $ withFdSocket s $ \fd -> + c_WSAIoctl fd sioUDPConnReset val 4 nullPtr 0 ret nullPtr nullPtr +#else +reportConnReset _ _ = return () +#endif + ----------------------------------------------------------------------------- -- Binding a socket @@ -148,8 +172,9 @@ -- | Connect to a remote socket at address. connect :: SocketAddress sa => Socket -> sa -> IO () -connect s sa = withSocketsDo $ withSocketAddress sa $ \p_sa sz -> +connect s sa = withSocketsDo $ withSocketAddress sa $ \p_sa sz -> do connectLoop s p_sa (fromIntegral sz) + reportConnReset s True connectLoop :: SocketAddress sa => Socket -> Ptr sa -> CInt -> IO () connectLoop s p_sa sz = withFdSocket s $ \fd -> loop fd @@ -251,6 +276,11 @@ #endif #if defined(mingw32_HOST_OS) +-- int WSAIoctl(SOCKET, DWORD, LPVOID, DWORD, LPVOID, DWORD, LPDWORD, +-- LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE) +foreign import CALLCONV unsafe "WSAIoctl" + c_WSAIoctl :: CInt -> Word32 -> Ptr Word32 -> Word32 -> Ptr () -> Word32 + -> Ptr Word32 -> Ptr () -> Ptr () -> IO CInt foreign import CALLCONV safe "accept" c_accept_safe :: CInt -> Ptr sa -> Ptr CInt{-CSockLen???-} -> IO CInt foreign import ccall unsafe "rtsSupportsBoundThreads" diff --git a/Network/Socket/Types.hsc b/Network/Socket/Types.hsc --- a/Network/Socket/Types.hsc +++ b/Network/Socket/Types.hsc @@ -82,6 +82,9 @@ , htonl , ntohl , In6Addr(..) + + -- * Multicast Group + , MulticastGroup(..) ) where import Data.IORef (IORef, newIORef, readIORef, atomicModifyIORef', mkWeakIORef) @@ -1504,3 +1507,27 @@ -- | Zero a structure. zeroMemory :: Ptr a -> CSize -> IO () zeroMemory dest nbytes = memset dest 0 (fromIntegral nbytes) + + +------------------------------------------------------------------------ +-- Multicast Group + +data MulticastGroup = MulticastGroup + { groupAddress :: HostAddress + , localAddress :: Maybe HostAddress + } deriving (Show, Eq) + +instance Storable MulticastGroup where + sizeOf ~_ = #size struct ip_mreq + alignment ~_ = #alignment struct ip_mreq + peek p = do + g <- (#peek struct ip_mreq, imr_multiaddr) p + l <- (#peek struct ip_mreq, imr_interface) p + pure . MulticastGroup g $ case l of + 0 -> Nothing + loc -> Just loc + poke p (MulticastGroup g l) = do + (#poke struct ip_mreq, imr_multiaddr) p g + (#poke struct ip_mreq, imr_interface) p (case l of + Nothing -> 0 + Just loc -> loc) diff --git a/Network/Socket/Wait.hs b/Network/Socket/Wait.hs new file mode 100644 --- /dev/null +++ b/Network/Socket/Wait.hs @@ -0,0 +1,227 @@ +{-# LANGUAGE CPP #-} + +#include "HsNetDef.h" + +-- | Blocking socket operations which a caller can give up on. +-- +-- Each takes an 'STM' action beside the operation. Whichever +-- settles first decides the result: 'Left' when the caller gave up, +-- 'Right' when the operation completed. Nothing has to be closed or +-- interrupted to make the thread return, so neither the delivery of +-- @evtClose@ by @closeFdWith@ nor an asynchronous exception reaching +-- a blocking call is relied upon. +-- +-- __On Windows these need the threaded runtime.__ There is no +-- readiness to wait for there, so the operation is started and then +-- cancelled, and the thread it runs in blocks in a foreign call. +-- Without @-threaded@ that blocks every other thread too, including +-- the one which would have given up, and nothing returns at all. +module Network.Socket.Wait ( + withReadable, + acceptWith, + recvBufWith, + recvBufFromWith, + isClosedSocketError, + isTransientAcceptError, +) where + +import Control.Concurrent.STM +import qualified Control.Exception as E +import Foreign.C.Error ( + Errno (..), + eCONNABORTED, + eHOSTDOWN, + eHOSTUNREACH, + eNETDOWN, + eNETUNREACH, + eNONET, + eNOPROTOOPT, + ePROTO, + ) +import GHC.IO.Exception (IOErrorType (..), ioe_errno) +import System.IO.Error (ioeGetErrorType) + +import Network.Socket.Buffer +#if defined(mingw32_HOST_OS) +import Network.Socket.Cbits +import Network.Socket.Win32.Cancel +#else +import Network.Socket.STM +#endif +import Network.Socket.Imports +import Network.Socket.Syscall +import Network.Socket.Types + +-- | Running an action once the socket is readable, unless the 'STM' +-- action fires first. The 'STM' action is also looked at before +-- anything else, so a caller which has already given up never waits. +-- An operation which has completed wins a tie, so nothing it has +-- already received is thrown away. +-- +-- __The action must be an operation on this socket which returns +-- without blocking once the socket is readable.__ The type does not +-- say so and nothing checks it. On POSIX the action runs on the +-- calling thread after readiness and nothing interrupts it there: the +-- give-up ends the wait, not the action. On Windows there is no +-- readiness to wait for, so the action is started at once on a thread +-- of its own and the give-up cancels it with @CancelIoEx@ on this +-- socket, which reaches nothing else -- an action blocked on anything +-- else would never end. +-- +-- __One reader at a time__ is what keeps that condition. A second +-- thread taking the data between the readiness and the action leaves +-- the action blocking on the socket, with the give-up no longer in +-- play. +-- +-- __The 'STM' action is run more than once__, so it has to be a test +-- and not something which takes what it reads: it is looked at before +-- the wait and again as part of it, and 'Network.Socket.ByteString.recvWith' +-- looks at it once more before a read which would not block. Reading +-- a 'TVar' is what it is for. +withReadable :: Socket -> STM a -> IO b -> IO (Either a b) +withReadable s giveUp act = do + -- Looking at the give-up first: on Windows 'wait' starts the + -- operation before it looks at any STM, and on POSIX this keeps a + -- caller which has given up off a descriptor close may have freed. + gaveUp <- atomically $ (Just <$> giveUp) `orElse` return Nothing + case gaveUp of + Just a -> return $ Left a + Nothing -> wait + where +#if !defined(mingw32_HOST_OS) + wait = do + (readable, cancelWait) <- waitAndCancelReadSocketSTM s + ev <- + atomically ((Left <$> giveUp) `orElse` (Right <$> readable)) + `E.finally` (cancelWait `E.catch` gone) + either (return . Left) (const $ Right <$> act) ev + + -- The cancel can throw, and from a finally that would replace the + -- exception which ended the wait -- the timeout the caller is waiting + -- to see, say. What it reports is a registration which has already + -- gone, and there is nothing to do about that. + gone :: E.IOException -> IO () + gone _ = return () +#else + wait = do + (completed, cancelAct) <- windowsViaSTM s act + -- The operation wins a tie. It has already read into the + -- caller's buffer by then, and answering Left would throw those + -- bytes away -- which for a stream loses them for good. + -- + -- onException because the call runs in a thread of its own here: + -- an asynchronous exception arriving during the wait would + -- otherwise leave it blocked in a foreign call, holding the + -- socket and writing into a buffer the caller has let go of. + ev <- + atomically ((Right <$> completed) `orElse` (Left <$> giveUp)) + `E.onException` cancelAct + case ev of + Right b -> return $ Right b + Left a -> do + cancelAct + return $ Left a +#endif + +-- | 'accept' which the caller can give up on. +-- +-- @since 3.2.10.0 +acceptWith :: SocketAddress sa => Socket -> STM a -> IO (Either a (Socket, sa)) +acceptWith s giveUp = withReadable s giveUp $ accept s + +-- | 'recvBuf' which the caller can give up on. +-- +-- @since 3.2.10.0 +recvBufWith :: Socket -> Ptr Word8 -> Int -> STM a -> IO (Either a Int) +recvBufWith s ptr nbytes giveUp = withReadable s giveUp $ recvBuf s ptr nbytes + +-- | 'recvBufFrom' which the caller can give up on. +-- +-- @since 3.2.10.0 +recvBufFromWith + :: SocketAddress sa + => Socket -> Ptr Word8 -> Int -> STM a -> IO (Either a (Int, sa)) +recvBufFromWith s ptr nbytes giveUp = + withReadable s giveUp $ recvBufFrom s ptr nbytes + +-- | Whether this is the error a socket operation gives once the socket has +-- been closed under it. +-- +-- A caller which stops when it is told also stops when the socket it was +-- waiting on goes away, and this is how that arrives. It is not an +-- error to report: closing the socket is how a server was stopped +-- before there was anything to tell it, and callers which do that are +-- still out there. +-- +-- @since 3.2.10.0 +isClosedSocketError :: E.IOException -> Bool +isClosedSocketError e = ioeGetErrorType e == InvalidArgument || isWinsock e + where +#if defined(mingw32_HOST_OS) + -- closesocket gives WSAEINTR to a call already blocked on the socket + -- and WSAENOTSOCK to one which starts afterwards. + isWinsock x = ioe_errno x `elem` map Just [wsaEINTR, wsaENOTSOCK] +#else + isWinsock _ = False +#endif + +-- | Whether an exception from 'accept' is about the connection it was +-- accepting rather than about the listening socket. +-- +-- The peer may reset the connection before it is accepted +-- (@ECONNABORTED@), and Linux reports a new socket's already-pending +-- network errors through @accept()@ as well; accept(2) asks for all of +-- these to be retried, like @EAGAIN@. The connection has left the queue +-- by then, so a retry blocks for a new one rather than spinning on the +-- same failure. +-- +-- Two which are not here: +-- +-- * Running out of descriptors (@EMFILE@, @ENFILE@) is about the process, +-- not about one connection, and retrying at once spins: the listening +-- socket stays readable. 'System.IO.Error.isFullError' names it, and a +-- caller which retries it should wait first. +-- +-- * @EOPNOTSUPP@ is on accept(2)'s list and is left off this one on +-- purpose: it is also what a listening socket which is not +-- 'Network.Socket.Stream' answers, which is permanent, and a retry +-- would spin on it forever. +-- +-- Winsock numbers its errors apart from @errno@, so on Windows a list +-- of its own is read as well. @WSAEINTR@ is not on it: there it is +-- what @closesocket@ gives a blocked call, which 'isClosedSocketError' +-- takes. @WSAENOBUFS@ is left off for the reason @EMFILE@ is. +-- +-- @since 3.2.10.0 +isTransientAcceptError :: E.IOException -> Bool +isTransientAcceptError e = + ioeGetErrorType e == Interrupted || any is errnos || isWinsock e + where + -- An errno the platform does not have is Errno (-1), which would + -- otherwise match every error carrying that. + is (Errno n) = n /= -1 && ioe_errno e == Just n + errnos = + [ eCONNABORTED + , eHOSTDOWN + , eHOSTUNREACH + , eNETDOWN + , eNETUNREACH + , eNONET + , eNOPROTOOPT + , ePROTO + ] +#if defined(mingw32_HOST_OS) + isWinsock x = ioe_errno x `elem` map Just codes + codes = + [ wsaECONNABORTED + , wsaECONNRESET + , wsaEHOSTDOWN + , wsaEHOSTUNREACH + , wsaENETDOWN + , wsaENETRESET + , wsaENETUNREACH + , wsaENOPROTOOPT + ] +#else + isWinsock _ = False +#endif diff --git a/Network/Socket/Win32/Cancel.hs b/Network/Socket/Win32/Cancel.hs new file mode 100644 --- /dev/null +++ b/Network/Socket/Win32/Cancel.hs @@ -0,0 +1,109 @@ +{-# LANGUAGE CPP #-} +{-# LANGUAGE LambdaCase #-} + +#include "HsNetDef.h" + +-- | Giving up on an operation on a socket, on Windows. +-- +-- There is no readiness to wait for here -- completion ports report +-- that an operation has finished, not that one could be started -- so +-- the operation is run on a thread of its own and ended with +-- @CancelIoEx@. Nothing else would end it: an asynchronous exception +-- does not reach a thread blocked in a socket call on Windows. +-- +-- __These need the threaded runtime.__ The operation blocks in a +-- foreign call, which without @-threaded@ stops every other thread, +-- including the one which would cancel it. +module Network.Socket.Win32.Cancel ( + windowsViaSTM, + windowsCancelPendingIo, +) where + +import Control.Concurrent (forkIO) +import Control.Concurrent.STM +import qualified Control.Exception as E +import Foreign.Ptr (nullPtr) +import System.IO (hPutStrLn, stderr) + +import Network.Socket.Imports +import Network.Socket.Types + +-- | Running a blocking operation on the socket in a thread of its own +-- and handing its result over through STM, together with an action +-- cancelling it. If the operation fails, the 'STM' action rethrows +-- the exception. +-- +-- Cancelling waits for the operation to end, so a buffer it reads +-- into has to stay alive until either the 'STM' action completes or +-- the cancel returns. +windowsViaSTM :: Socket -> IO a -> IO (STM a, IO ()) +windowsViaSTM s act = do + var <- newTVarIO Nothing + -- Masked so that the var is written whatever happens: a thread + -- which died between the call returning and the write would leave + -- the waiter retrying and the cancel below looping for ever. The + -- call itself is a foreign one, which no exception reaches anyway. + tid <- forkIO $ E.mask_ $ E.try act >>= atomically . writeTVar var . Just + let wait = + readTVar var >>= \case + Nothing -> retry + Just (Left e) -> throwSTM (e :: E.SomeException) + Just (Right x) -> return x + ended = isJust <$> readTVar var + return (wait, cancel s ended tid) + where + -- An asynchronous exception does not reach a thread blocked in a + -- socket call here, so the call itself is cancelled. CancelIoEx + -- reaches an operation which is already in the kernel, and a call + -- which has not got there yet is caught by trying again. The + -- socket is never shut down to end the call: the caller is entitled + -- to keep using it, and a shutdown would take that away. + -- + -- Uninterruptible because this must not be abandoned: the operation + -- is still writing into the caller's buffer until it ends, and + -- nothing but the end of it stops the loop. + cancel sock ended _tid = E.uninterruptibleMask_ $ loop sayAfter + where + loop n = do + windowsCancelPendingIo sock + over <- endedWithin 1000 + unless over $ do + when (n == 1) say + loop (n - 1) + -- Wait for the call to end rather than sleep through it: + -- CancelIoEx usually works at once, and a sleep here costs a + -- whole timer tick, which Windows measures in tens of ms. + endedWithin us = do + late <- registerDelay us + atomically $ + (True <$ (check =<< ended)) + `orElse` (False <$ (check =<< readTVar late)) + -- Rounds before saying something and carrying on. A round which + -- cancels nothing costs a timer tick, which Windows measures in tens + -- of milliseconds, so this is seconds rather than the hundredth of a + -- second it reads as. Two rounds is the most ever measured. + sayAfter :: Int + sayAfter = 100 + -- Said from a thread of its own, and its failure ignored. This is + -- the path which has to finish before the caller's buffer can go, + -- and writing to stderr can block on the handle's lock or on a pipe + -- nobody is draining -- for ever, inside the mask above. + say = void $ forkIO $ void (E.try warn :: IO (Either E.SomeException ())) + warn = + hPutStrLn stderr $ + "network: a socket operation given up on is not cancelling; " + ++ "still trying. Please report this." + +-- | Cancelling whatever operation is pending on the socket, while +-- leaving the socket itself usable: unlike 'Network.Socket.shutdown' +-- this does not shut it down. An operation which has not reached the +-- kernel yet is not cancelled, so the caller has to be ready to try +-- again. +windowsCancelPendingIo :: Socket -> IO () +windowsCancelPendingIo s = void $ withFdSocket s $ \fd -> c_CancelIoEx fd nullPtr + +-- BOOL CancelIoEx(HANDLE hFile, LPOVERLAPPED lpOverlapped) +-- A SOCKET is a kernel HANDLE. A NULL lpOverlapped cancels all +-- pending I/O on the handle, whichever thread issued it. +foreign import CALLCONV unsafe "CancelIoEx" + c_CancelIoEx :: CInt -> Ptr () -> IO CInt diff --git a/Network/Socket/Win32/HostName.hsc b/Network/Socket/Win32/HostName.hsc new file mode 100644 --- /dev/null +++ b/Network/Socket/Win32/HostName.hsc @@ -0,0 +1,39 @@ +{-# LANGUAGE CPP #-} + +#include "HsNet.h" +##include "HsNetDef.h" + +module Network.Socket.Win32.HostName ( + getHostName, +) +where + +import Foreign.C.Types +import Foreign.Marshal.Utils +import Foreign.Ptr +import Foreign.Storable +import Network.Socket.Info (HostName) +import System.Win32.Types + +foreign import CALLCONV unsafe "windows.h GetComputerNameExW" + getComputerNameEx :: COMPUTER_NAME_FORMAT -> LPTSTR -> LPDWORD -> IO BOOL + +type COMPUTER_NAME_FORMAT = CInt + +computerNamePhysicalDnsHostname :: COMPUTER_NAME_FORMAT +computerNamePhysicalDnsHostname = 5 + +-- | Get name of current host +-- +-- Since: 3.3.0.0 +getHostName :: IO HostName +getHostName = with 0 $ \p_charcount -> do + -- On the first run, determine the character count and ignore any error we get + _ <- getComputerNameEx computerNamePhysicalDnsHostname nullPtr p_charcount + charcount <- peek p_charcount + + -- The second time around, use the correct character count to retrieve the data + withTString (replicate (fromIntegral charcount) ' ') $ \name -> do + failIfFalse_ "GetComputerNameExW" $ + getComputerNameEx computerNamePhysicalDnsHostname name p_charcount + peekTString name diff --git a/configure b/configure --- a/configure +++ b/configure @@ -1,5235 +1,5431 @@ #! /bin/sh # Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.72 for Haskell network package 3.2.7.0. -# -# Report bugs to . -# -# -# Copyright (C) 1992-1996, 1998-2017, 2020-2023 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 ${ZSH_VERSION+y} && (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 e in #( - e) case `(set -o) 2>/dev/null` in #( - *posix*) : - set -o posix ;; #( - *) : - ;; -esac ;; -esac -fi - - - -# Reset variables that may have inherited troublesome values from -# the environment. - -# IFS needs to be set, to space, tab, and newline, in precisely that order. -# (If _AS_PATH_WALK were called with IFS unset, it would have the -# side effect of setting IFS to empty, thus disabling word splitting.) -# Quoting is to prevent editors from complaining about space-tab. -as_nl=' -' -export as_nl -IFS=" "" $as_nl" - -PS1='$ ' -PS2='> ' -PS4='+ ' - -# Ensure predictable behavior from utilities with locale-dependent output. -LC_ALL=C -export LC_ALL -LANGUAGE=C -export LANGUAGE - -# We cannot yet rely on "unset" to work, but we need these variables -# to be unset--not just set to an empty or harmless value--now, to -# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh). 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Disable this. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else case e in #( + e) case \`(set -o) 2>/dev/null\` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac ;; +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 case e in #( + e) exitcode=1; echo positional parameters were not saved. ;; +esac +fi +test x\$exitcode = x0 || exit 1 +blah=\$(echo \$(echo blah)) +test x\"\$blah\" = xblah || 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" + if (eval "$as_required") 2>/dev/null +then : + as_have_required=yes +else case e in #( + e) as_have_required=no ;; +esac +fi + if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null +then : + +else case e in #( + e) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH +do + IFS=$as_save_IFS + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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 "$as_shell.exe"; } && + as_run=a "$as_shell" -c "$as_bourne_compatible""$as_required" 2>/dev/null +then : + CONFIG_SHELL=$as_shell as_have_required=yes + if as_run=a "$as_shell" -c "$as_bourne_compatible""$as_suggested" 2>/dev/null +then : + break 2 +fi +fi + done;; + esac + as_found=false +done +IFS=$as_save_IFS +if $as_found +then : + +else case e in #( + e) if { test -f "$SHELL" || test -f "$SHELL.exe"; } && + as_run=a "$SHELL" -c "$as_bourne_compatible""$as_required" 2>/dev/null +then : + CONFIG_SHELL=$SHELL as_have_required=yes +fi ;; +esac +fi + + + if test "x$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 +case $# in # (( + 0) exec $CONFIG_SHELL $as_opts "$as_myself" ;; + *) exec $CONFIG_SHELL $as_opts "$as_myself" "$@" ;; +esac +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed 'exec'. +printf '%s\n' "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 +fi + + if test x$as_have_required = xno +then : + printf '%s\n' "$0: This script requires a shell more modern than all" + printf '%s\n' "$0: the shells that I found on your system." + if test ${ZSH_VERSION+y} ; then + printf '%s\n' "$0: In particular, zsh $ZSH_VERSION has bugs and should" + printf '%s\n' "$0: be upgraded to zsh 4.3.4 or later." + else + printf '%s\n' "$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 +$0: shell if you do have one." + fi + exit 1 +fi ;; +esac +fi +fi +SHELL=${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 $as_dir in #( + *\'*) as_qdir=`printf '%s\n' "$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 || +printf '%s\n' 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 case e in #( + e) as_fn_append () + { + eval $1=\$$1\$2 + } ;; +esac +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 $(()) and expr. +if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null +then : + eval 'as_fn_arith () + { + as_val=$(( $* )) + }' +else case e in #( + e) as_fn_arith () + { + as_val=`expr "$@" || test $? -eq 1` + } ;; +esac +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 + printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: $2" >&$4 + fi + printf '%s\n' "$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 || +printf '%s\n' 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 ' + t clear + :clear + 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" || + { printf '%s\n' "$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 +} + +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 "$as_dir"' +else + test -d ./-p && rmdir ./-p + as_mkdir_p=false +fi + +as_test_x='test -x' +as_executable_p=as_fn_executable_p + +# Sed expression to map a string onto a valid CPP name. +as_sed_cpp="y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g" +as_tr_cpp="eval sed '$as_sed_cpp'" # deprecated + +# Sed expression to map a string onto a valid variable name. +as_sed_sh="y%*+%pp%;s%[^_$as_cr_alnum]%_%g" +as_tr_sh="eval sed '$as_sed_sh'" # deprecated + + +test -n "$DJDIR" || exec 7<&0 &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_CONFIG_STATUS= +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='3.2.7.0' +PACKAGE_STRING='Haskell network package 3.2.7.0' +PACKAGE_BUGREPORT='libraries@haskell.org' +PACKAGE_URL='' + +ac_unique_file="include/HsNet.h" +# Factoring default headers for most tests. +ac_includes_default="\ +#include +#ifdef HAVE_STDIO_H +# include +#endif +#ifdef HAVE_STDLIB_H +# include +#endif +#ifdef HAVE_STRING_H +# include +#endif +#ifdef HAVE_INTTYPES_H +# include +#endif +#ifdef HAVE_STDINT_H +# include +#endif +#ifdef HAVE_STRINGS_H +# include +#endif +#ifdef HAVE_SYS_TYPES_H +# include +#endif +#ifdef HAVE_SYS_STAT_H +# include +#endif +#ifdef HAVE_UNISTD_H +# include +#endif" + +ac_header_c_list= +ac_subst_vars='LTLIBOBJS +LIBOBJS +OBJEXT +EXEEXT +ac_ct_CC +CPPFLAGS +LDFLAGS +CFLAGS +CC +host_os +host_vendor +host_cpu +host +build_os +build_vendor +build_cpu +build +ECHO_T +ECHO_N +ECHO_C +target_alias +host_alias +build_alias +LIBS +DEFS +mandir +localedir +libdir +psdir +pdfdir +dvidir +htmldir +infodir +docdir +oldincludedir +includedir +runstatedir +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 +with_compiler +with_hc +' + ac_precious_vars='build_alias +host_alias +target_alias +CC +CFLAGS +LDFLAGS +LIBS +CPPFLAGS' + + +# 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' +runstatedir='${localstatedir}/run' +includedir='${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 "$ac_prev"; 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[VAR=VALUE]... + +To assign environment variables (e.g., CC, CFLAGS...), specify them as +VAR=VALUE. See below for descriptions of some of the useful variables. + +Defaults for the options are specified in brackets. + +Configuration: + -h, --help display this help and exit + --help=short display options specific to this package + --help=recursive display the short help of all the included packages + -V, --version display version information and exit + -q, --quiet, --silent do not print 'checking ...' messages + --cache-file=FILE cache test results in FILE [disabled] + -C, --config-cache alias for '--cache-file=config.cache' + -n, --no-create do not create output files + --srcdir=DIR find the sources in DIR [configure dir or '..'] + +Installation directories: + --prefix=PREFIX install architecture-independent files in PREFIX + [$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 '$ac_default_prefix' using '--prefix', +for instance '--prefix=\$HOME'. + +For better control, use the options below. + +Fine tuning of the installation directories: + --bindir=DIR user executables [EPREFIX/bin] + --sbindir=DIR system admin executables [EPREFIX/sbin] + --libexecdir=DIR program executables [EPREFIX/libexec] + --sysconfdir=DIR read-only single-machine data [PREFIX/etc] + --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com] + --localstatedir=DIR modifiable single-machine data [PREFIX/var] + --runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run] + --libdir=DIR object code libraries [EPREFIX/lib] + --includedir=DIR C header files [PREFIX/include] + --oldincludedir=DIR C header files for non-gcc [/usr/include] + --datarootdir=DIR read-only arch.-independent data root [PREFIX/share] + --datadir=DIR read-only architecture-independent data [DATAROOTDIR] + --infodir=DIR info documentation [DATAROOTDIR/info] + --localedir=DIR locale-dependent data [DATAROOTDIR/locale] + --mandir=DIR man documentation [DATAROOTDIR/man] + --docdir=DIR documentation root [DATAROOTDIR/doc/network] + --htmldir=DIR html documentation [DOCDIR] + --dvidir=DIR dvi documentation [DOCDIR] + --pdfdir=DIR pdf documentation [DOCDIR] + --psdir=DIR ps documentation [DOCDIR] +_ACEOF + + cat <<\_ACEOF + +System types: + --build=BUILD configure for building on BUILD [guessed] + --host=HOST cross-compile to build programs to run on HOST [BUILD] +_ACEOF +fi + +if test -n "$ac_init_help"; then + case $ac_init_help in + short | recursive ) echo "Configuration of Haskell network package 3.2.7.0:";; + esac + cat <<\_ACEOF + +Optional Packages: + --with-PACKAGE[=ARG] use PACKAGE [ARG=yes] + --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no) +C compiler +Haskell compiler + +Some influential environment variables: + CC C compiler command + CFLAGS C compiler flags + LDFLAGS linker flags, e.g. -L if you have libraries in a + nonstandard directory + LIBS libraries to pass to the linker, e.g. -l + CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I if + you have headers in a nonstandard directory + +Use these variables to override the choices made by 'configure' or to help +it to find libraries and programs with nonstandard names/locations. + +Report bugs to . +_ACEOF +ac_status=$? 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+ cd "$ac_pwd" || { ac_status=$?; break; } + done +fi + +test -n "$ac_init_help" && exit $ac_status +if $ac_init_version; then + cat <<\_ACEOF +Haskell network package configure 3.2.7.0 +generated by GNU Autoconf 2.73 + +Copyright (C) 2026 Free Software Foundation, Inc. +This configure script is free software; the Free Software Foundation +gives unlimited permission to copy, distribute and modify it. +_ACEOF + exit +fi + +## ------------------------ ## +## Autoconf initialization. ## +## ------------------------ ## + +# ac_fn_c_try_compile LINENO +# -------------------------- +# Try to compile conftest.$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.$ac_objext conftest.beam + if { { ac_try="$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}: $ac_try_echo\"" +printf '%s\n' "$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 + printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } && { + test -z "$ac_c_werror_flag" || + test ! -s conftest.err + } && test -s conftest.$ac_objext +then : + ac_retval=0 +else case e in #( + e) printf '%s\n' "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + ac_retval=1 ;; +esac +fi + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + as_fn_set_status $ac_retval + +} # ac_fn_c_try_compile + +# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES +# ------------------------------------------------------- +# Tests whether HEADER exists and can be compiled using the include files in +# INCLUDES, setting the cache variable VAR accordingly. +ac_fn_c_check_header_compile () +{ + as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $2" >&5 +printf %s "checking for $2... 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" >&6; } +if eval test \${$3+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) eval "$3=no" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main (void) +{ +if (sizeof ($2)) + return 0; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main (void) +{ +if (sizeof (($2))) + return 0; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + +else case e in #( + e) eval "$3=yes" ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; +esac +fi +eval ac_res=\$$3 + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5 +printf '%s\n' "$ac_res" >&6; } + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + +} # ac_fn_c_check_type + +# ac_fn_c_try_link LINENO +# ----------------------- +# Try to link conftest.$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.$ac_objext conftest.beam conftest$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}: $ac_try_echo\"" +printf '%s\n' "$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 + printf '%s\n' "$as_me:${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$ac_exeext + } +then : + ac_retval=0 +else case e in #( + e) printf '%s\n' "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + ac_retval=1 ;; +esac +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 + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $2" >&5 +printf %s "checking for $2... " >&6; } +if eval test \${$3+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +/* Define $2 to an innocuous variant, in case declares $2. + For example, HP-UX 11i declares gettimeofday. */ +#define $2 innocuous_$2 + +/* System header to define __stub macros and hopefully few prototypes, + which can conflict with char $2 (void); below. */ + +#include +#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 (void); +/* 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 (void) +{ +return $2 (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO" +then : + eval "$3=yes" +else case e in #( + e) eval "$3=no" ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam \ + conftest$ac_exeext conftest.$ac_ext ;; +esac +fi +eval ac_res=\$$3 + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5 +printf '%s\n' "$ac_res" >&6; } + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + +} # ac_fn_c_check_func + +# ac_fn_check_decl LINENO SYMBOL VAR INCLUDES EXTRA-OPTIONS FLAG-VAR +# ------------------------------------------------------------------ +# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR +# accordingly. Pass EXTRA-OPTIONS to the compiler, using FLAG-VAR. +ac_fn_check_decl () +{ + as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + as_decl_name=`echo $2|sed 's/ *(.*//'` + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5 +printf %s "checking whether $as_decl_name is declared... " >&6; } +if eval test \${$3+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'` + eval ac_save_FLAGS=\$$6 + as_fn_append $6 " $5" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main (void) +{ +#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 case e in #( + e) eval "$3=no" ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext + eval $6=\$ac_save_FLAGS + ;; +esac +fi +eval ac_res=\$$3 + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5 +printf '%s\n' "$ac_res" >&6; } + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + +} # ac_fn_check_decl + +# ac_fn_c_check_member LINENO AGGR MEMBER VAR INCLUDES +# ---------------------------------------------------- +# Tries to find if the field MEMBER exists in type AGGR, after including +# INCLUDES, setting cache variable VAR accordingly. +ac_fn_c_check_member () +{ + as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $2.$3" >&5 +printf %s "checking for $2.$3... " >&6; } +if eval test \${$4+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$5 +int +main (void) +{ +static $2 ac_aggr; +if (ac_aggr.$3) +return 0; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + eval "$4=yes" +else case e in #( + e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$5 +int +main (void) +{ +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 case e in #( + e) eval "$4=no" ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; +esac +fi +eval ac_res=\$$4 + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5 +printf '%s\n' "$ac_res" >&6; } + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + +} # ac_fn_c_check_member +ac_configure_args_raw= +for ac_arg +do + case $ac_arg in + *\'*) + ac_arg=`printf '%s\n' "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;; + esac + as_fn_append ac_configure_args_raw " '$ac_arg'" +done + +case $ac_configure_args_raw in + *$as_nl*) + ac_safe_unquote= ;; + *) + ac_unsafe_z='|&;<>()$`\\"*?[ '' ' # This string ends in space, tab. + ac_unsafe_a="$ac_unsafe_z#~" + ac_safe_unquote="s/ '\\([^$ac_unsafe_a][^$ac_unsafe_z]*\\)'/ \\1/g" + ac_configure_args_raw=` printf '%s\n' "$ac_configure_args_raw" | sed "$ac_safe_unquote"`;; +esac + +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 3.2.7.0, which was +generated by GNU Autoconf 2.73. Invocation command line was + + $ $0$ac_configure_args_raw + +_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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + printf '%s\n' "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 $ac_arg in + -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;; + -q | -quiet | --quiet | --quie | --qui | --qu | --q \ + | -silent | --silent | --silen | --sile | --sil) + continue ;; + *\'*) + ac_arg=`printf '%s\n' "$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;} + +# Dump the cache to stdout. It can be in a pipe (this is a requirement). +ac_cache_dump () +{ + # 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 $ac_var in #( + *_cv_*) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5 +printf '%s\n' "$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 +) +} + +# Print debugging info to stdout. +ac_dump_debugging_info () +{ + echo + + printf '%s\n' "## ---------------- ## +## Cache variables. ## +## ---------------- ##" + echo + ac_cache_dump + echo + + printf '%s\n' "## ----------------- ## +## Output variables. ## +## ----------------- ##" + echo + for ac_var in $ac_subst_vars + do + eval ac_val=\$$ac_var + case $ac_val in + *\'*) ac_val=`printf '%s\n' "$ac_val" | sed "s/'/'\\\\\\\\''/g"`;; + esac + printf '%s\n' "$ac_var='$ac_val'" + done | sort + echo + + if test -n "$ac_subst_files"; then + printf '%s\n' "## ------------------- ## +## File substitutions. ## +## ------------------- ##" + echo + for ac_var in $ac_subst_files + do + eval ac_val=\$$ac_var + case $ac_val in + *\'*) ac_val=`printf '%s\n' "$ac_val" | sed "s/'/'\\\\\\\\''/g"`;; + esac + printf '%s\n' "$ac_var='$ac_val'" + done | sort + echo + fi + + if test -s confdefs.h; then + printf '%s\n' "## ----------- ## +## confdefs.h. ## +## ----------- ##" + echo + cat confdefs.h + echo + fi + test "$ac_signal" != 0 && + printf '%s\n' "$as_me: caught signal $ac_signal" + printf '%s\n' "$as_me: exit $exit_status" +} + +# When interrupted or exit'd, cleanup temporary files, and complete +# config.log. +ac_exit_trap () +{ + exit_status= + # Sanitize IFS. + IFS=" "" $as_nl" + # Save into config.log some information that might help in debugging. + ac_dump_debugging_info >&5 + eval "rm -f $ac_clean_CONFIG_STATUS core *.core core.conftest.*" && + rm -f -r conftest* confdefs* conf$$* $ac_clean_files && + exit $exit_status +} + +trap 'ac_exit_trap $?' 0 +for ac_signal in 1 2 13 15; do + trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal +done +ac_signal=0 + +# confdefs.h avoids OS command line length limits that DEFS can exceed. +rm -f -r conftest* confdefs.h + +printf '%s\n' "/* confdefs.h */" > confdefs.h + +# Predefined preprocessor variables. + +printf '%s\n' "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h + +printf '%s\n' "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h + +printf '%s\n' "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h + +printf '%s\n' "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h + +printf '%s\n' "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h + +printf '%s\n' "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h + + +# Let the site file select an alternate cache file if it wants to. +# Prefer an explicitly selected file to automatically selected ones. +if test -n "$CONFIG_SITE"; then + ac_site_files="$CONFIG_SITE" +elif test "x$prefix" != xNONE; then + ac_site_files="$prefix/share/config.site $prefix/etc/config.site" +else + ac_site_files="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site" +fi + +for ac_site_file in $ac_site_files +do + case $ac_site_file in #( + */*) : + ;; #( + *) : + ac_site_file=./$ac_site_file ;; +esac + if test -f "$ac_site_file" && test -r "$ac_site_file"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5 +printf '%s\n' "$as_me: loading site script $ac_site_file" >&6;} + sed 's/^/| /' "$ac_site_file" >&5 + . "$ac_site_file" \ + || { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 +printf '%s\n' "$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 "$cache_file"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5 +printf '%s\n' "$as_me: loading cache $cache_file" >&6;} + case $cache_file in + [\\/]* | ?:[\\/]* ) . "$cache_file";; + *) . "./$cache_file";; + esac + fi +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5 +printf '%s\n' "$as_me: creating cache $cache_file" >&6;} + >$cache_file +fi + +# Test code for whether the C compiler supports C23 (global declarations) +ac_c_conftest_c23_globals=' +/* Does the compiler advertise conformance to C17 or earlier? + Although GCC 14 does not do that, even with -std=gnu23, + it is close enough, and defines __STDC_VERSION == 202000L. */ +#if !defined __STDC_VERSION__ || __STDC_VERSION__ <= 201710L +# error "Compiler advertises conformance to C17 or earlier" +#endif + +// Check alignas. +char alignas (double) c23_aligned_as_double; +char alignas (0) c23_no_special_alignment; +extern char c23_aligned_as_int; +char alignas (0) alignas (int) c23_aligned_as_int; + +// Check alignof. +enum +{ + c23_int_alignment = alignof (int), + c23_int_array_alignment = alignof (int[100]), + c23_char_alignment = alignof (char) +}; +static_assert (0 < -alignof (int), "alignof is signed"); + +int function_with_unnamed_parameter (int) { return 0; } + +void c23_noreturn (); + +/* Test parsing of string and char UTF-8 literals (including hex escapes). + The parens pacify GCC 15. */ +bool use_u8 = (!sizeof u8"\xFF") == (!u8'\''x'\''); + +bool check_that_bool_works = true | false | !nullptr; +#if !true +# error "true does not work in #if" +#endif +#if false +#elifdef __STDC_VERSION__ +#else +# error "#elifdef does not work" +#endif + +#ifndef __has_c_attribute +# error "__has_c_attribute not defined" +#endif + +#ifndef __has_include +# error "__has_include not defined" +#endif + +#define LPAREN() ( +#define FORTY_TWO(x) 42 +#define VA_OPT_TEST(r, x, ...) __VA_OPT__ (FORTY_TWO r x)) +static_assert (VA_OPT_TEST (LPAREN (), 0, <:-) == 42); + +static_assert (0b101010 == 42); +static_assert (0B101010 == 42); +static_assert (0xDEAD'\''BEEF == 3'\''735'\''928'\''559); +static_assert (0.500'\''000'\''000 == 0.5); + +enum unsignedish : unsigned int { uione = 1 }; +static_assert (0 < -uione); + +#include +constexpr nullptr_t null_pointer = nullptr; + +static typeof (1 + 1L) two () { return 2; } +static long int three () { return 3; } +' + +# Test code for whether the C compiler supports C23 (body of main). +ac_c_conftest_c23_main=' + { + label_before_declaration: + int arr[10] = {}; + if (arr[0]) + goto label_before_declaration; + if (!arr[0]) + goto label_at_end_of_block; + label_at_end_of_block: + } + ok |= !null_pointer; + ok |= two != three; +' + +# Test code for whether the C compiler supports C23 (complete). +ac_c_conftest_c23_program="${ac_c_conftest_c23_globals} + +int +main (int, char **) +{ + int ok = 0; + ${ac_c_conftest_c23_main} + return ok; +} +" + +# Test code for whether the C compiler supports C89 (global declarations) +ac_c_conftest_c89_globals=' +/* Do not test the value of __STDC__, because some compilers define it to 0 + or do not define it, while otherwise adequately conforming. */ + +#include +#include +struct stat; +/* Most of the following tests are stolen from RCS 5.7 src/conf.sh. */ +struct buf { int x; }; +struct buf * (*rcsopen) (struct buf *, struct stat *, int); +static char *e (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; +} + +/* C89 style stringification. */ +#define noexpand_stringify(a) #a +const char *stringified = noexpand_stringify(arbitrary+token=sequence); + +/* C89 style token pasting. Exercises some of the corner cases that + e.g. old MSVC gets wrong, but not very hard. */ +#define noexpand_concat(a,b) a##b +#define expand_concat(a,b) noexpand_concat(a,b) +extern int vA; +extern int vbee; +#define aye A +#define bee B +int *pvA = &expand_concat(v,aye); +int *pvbee = &noexpand_concat(v,bee); + +/* 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 do not provoke an error unfortunately, instead are silently treated + as an "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 is necessary to write \x00 == 0 to get something + that is 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 **, int *(*)(struct buf *, struct stat *, int), + int, int);' + +# Test code for whether the C compiler supports C89 (body of main). +ac_c_conftest_c89_main=' +ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]); +' + +# Test code for whether the C compiler supports C99 (global declarations) +ac_c_conftest_c99_globals=' +/* Does the compiler advertise C99 conformance? */ +#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L +# error "Compiler does not advertise C99 conformance" +#endif + +// See if C++-style comments work. + +#include +extern int puts (const char *); +extern int printf (const char *, ...); +extern int dprintf (int, const char *, ...); +extern void *malloc (size_t); +extern void free (void *); + +// Check varargs macros. These examples are taken from C99 6.10.3.5. +// dprintf is used instead of fprintf to avoid needing to declare +// FILE and stderr, and "aND" is used instead of "and" to work around +// GCC bug 40564 which is irrelevant here. +#define debug(...) dprintf (2, __VA_ARGS__) +#define showlist(...) puts (#__VA_ARGS__) +#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__)) +static void +test_varargs_macros (void) +{ + int x = 1234; + int y = 5678; + debug ("Flag"); + debug ("X = %d\n", x); + showlist (The first, second, aND third items.); + report (x>y, "x is %d but y is %d", x, y); +} + +// Check long long types. +#define BIG64 18446744073709551615ull +#define BIG32 4294967295ul +#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0) +#if !BIG_OK + #error "your preprocessor is broken" +#endif +#if BIG_OK +#else + #error "your preprocessor is broken" +#endif +static long long int bignum = -9223372036854775807LL; +static unsigned long long int ubignum = BIG64; + +struct incomplete_array +{ + int datasize; + double data[]; +}; + +struct named_init { + int number; + const wchar_t *name; + double average; +}; + +typedef const char *ccp; + +static inline int +test_restrict (ccp restrict text) +{ + // Iterate through items via the restricted pointer. + // Also check for declarations in for loops. + for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i) + continue; + return 0; +} + +// Check varargs and va_copy. +static bool +test_varargs (const char *format, ...) +{ + va_list args; + va_start (args, format); + va_list args_copy; + va_copy (args_copy, args); + + const char *str = ""; + int number = 0; + float fnumber = 0; + + while (*format) + { + switch (*format++) + { + case '\''s'\'': // string + str = va_arg (args_copy, const char *); + break; + case '\''d'\'': // int + number = va_arg (args_copy, int); + break; + case '\''f'\'': // float + fnumber = va_arg (args_copy, double); + break; + default: + break; + } + } + va_end (args_copy); + va_end (args); + + return *str && number && fnumber; +} +' + +# Test code for whether the C compiler supports C99 (body of main). +ac_c_conftest_c99_main=' + // Check bool. + _Bool success = false; + success |= (argc != 0); + + // Check restrict. + if (test_restrict ("String literal") == 0) + success = true; + const char *restrict newvar = "Another string"; + + // Check varargs. + success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234); + test_varargs_macros (); + + // Check flexible array members. + static struct incomplete_array *volatile incomplete_array_pointer; + struct incomplete_array *ia = incomplete_array_pointer; + ia->datasize = 10; + for (int i = 0; i < ia->datasize; ++i) + ia->data[i] = i * 1.234; + // Work around memory leak warnings. + free (ia); + + // Check named initializers. + struct named_init ni = { + .number = 34, + .name = L"Test wide string", + .average = 543.34343, + }; + + ni.number = 58; + + // Do not test for VLAs, as some otherwise-conforming compilers lack them. + // C code should instead use __STDC_NO_VLA__; see Autoconf manual. + + // work around unused variable warnings + ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\'' + || ni.number != 58); +' + +# Test code for whether the C compiler supports C11 (global declarations) +ac_c_conftest_c11_globals=' +/* Does the compiler advertise C11 conformance? */ +#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L +# error "Compiler does not advertise C11 conformance" +#endif + +// Check _Alignas. +char _Alignas (double) aligned_as_double; +char _Alignas (0) no_special_alignment; +extern char aligned_as_int; +char _Alignas (0) _Alignas (int) aligned_as_int; + +// Check _Alignof. +enum +{ + int_alignment = _Alignof (int), + int_array_alignment = _Alignof (int[100]), + char_alignment = _Alignof (char) +}; +_Static_assert (0 < -_Alignof (int), "_Alignof is signed"); + +// Check _Noreturn. +int _Noreturn does_not_return (void) { for (;;) continue; } + +// Check _Static_assert. +struct test_static_assert +{ + int x; + _Static_assert (sizeof (int) <= sizeof (long int), + "_Static_assert does not work in struct"); + long int y; +}; + +// Check UTF-8 literals. +#define u8 syntax error! +char const utf8_literal[] = u8"happens to be ASCII" "another string"; + +// Check duplicate typedefs. +typedef long *long_ptr; +typedef long int *long_ptr; +typedef long_ptr long_ptr; + +// Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1. +struct anonymous +{ + union { + struct { int i; int j; }; + struct { int k; long int l; } w; + }; + int m; +} v1; +' + +# Test code for whether the C compiler supports C11 (body of main). +ac_c_conftest_c11_main=' + _Static_assert ((offsetof (struct anonymous, i) + == offsetof (struct anonymous, w.k)), + "Anonymous union alignment botch"); + v1.i = 2; + v1.w.k = 5; + ok |= v1.i != 5; +' + +# Test code for whether the C compiler supports C11 (complete). +ac_c_conftest_c11_program="${ac_c_conftest_c89_globals} +${ac_c_conftest_c99_globals} +${ac_c_conftest_c11_globals} + +int +main (int argc, char **argv) +{ + int ok = 0; + ${ac_c_conftest_c89_main} + ${ac_c_conftest_c99_main} + ${ac_c_conftest_c11_main} + return ok; +} +" + +# Test code for whether the C compiler supports C99 (complete). +ac_c_conftest_c99_program="${ac_c_conftest_c89_globals} +${ac_c_conftest_c99_globals} + +int +main (int argc, char **argv) +{ + int ok = 0; + ${ac_c_conftest_c89_main} + ${ac_c_conftest_c99_main} + return ok; +} +" + +# Test code for whether the C compiler supports C89 (complete). +ac_c_conftest_c89_program="${ac_c_conftest_c89_globals} + +int +main (int argc, char **argv) +{ + int ok = 0; + ${ac_c_conftest_c89_main} + return ok; +} +" + +as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H" +as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H" +as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H" +as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H" +as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H" +as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H" +as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H" +as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H" +as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H" + +# Auxiliary files required by this configure script. +ac_aux_files="config.guess config.sub" + +# Locations in which to look for auxiliary files. +ac_aux_dir_candidates="${srcdir}${PATH_SEPARATOR}${srcdir}/..${PATH_SEPARATOR}${srcdir}/../.." + +# Search for a directory containing all of the required auxiliary files, +# $ac_aux_files, from the $PATH-style list $ac_aux_dir_candidates. +# If we don't find one directory that contains all the files we need, +# we report the set of missing files from the *first* directory in +# $ac_aux_dir_candidates and give up. +ac_missing_aux_files="" +ac_first_candidate=: +printf '%s\n' "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5 +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in $ac_aux_dir_candidates +do + IFS=$as_save_IFS + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + as_found=: + + printf '%s\n' "$as_me:${as_lineno-$LINENO}: trying $as_dir" >&5 + ac_aux_dir_found=yes + ac_install_sh= + for ac_aux in $ac_aux_files + do + # As a special case, if "install-sh" is required, that requirement + # can be satisfied by any of "install-sh", "install.sh", or "shtool", + # and $ac_install_sh is set appropriately for whichever one is found. + if test x"$ac_aux" = x"install-sh" + then + if test -f "${as_dir}install-sh"; then + printf '%s\n' "$as_me:${as_lineno-$LINENO}: ${as_dir}install-sh found" >&5 + ac_install_sh="${as_dir}install-sh -c" + elif test -f "${as_dir}install.sh"; then + printf '%s\n' "$as_me:${as_lineno-$LINENO}: ${as_dir}install.sh found" >&5 + ac_install_sh="${as_dir}install.sh -c" + elif test -f "${as_dir}shtool"; then + printf '%s\n' "$as_me:${as_lineno-$LINENO}: ${as_dir}shtool found" >&5 + ac_install_sh="${as_dir}shtool install -c" + else + ac_aux_dir_found=no + if $ac_first_candidate; then + ac_missing_aux_files="${ac_missing_aux_files} install-sh" + else + break + fi + fi + else + if test -f "${as_dir}${ac_aux}"; then + printf '%s\n' "$as_me:${as_lineno-$LINENO}: ${as_dir}${ac_aux} found" >&5 + else + ac_aux_dir_found=no + if $ac_first_candidate; then + ac_missing_aux_files="${ac_missing_aux_files} ${ac_aux}" + else + break + fi + fi + fi + done + if test "$ac_aux_dir_found" = yes; then + ac_aux_dir="$as_dir" + break + fi + ac_first_candidate=false + + as_found=false +done +IFS=$as_save_IFS +if $as_found +then : + +else case e in #( + e) as_fn_error $? "cannot find required auxiliary files:$ac_missing_aux_files" "$LINENO" 5 ;; +esac +fi + + +# These three variables are undocumented and unsupported, +# and are intended to be withdrawn in a future Autoconf release. +# They can cause serious problems if a builder's source tree is in a directory +# whose full name contains unusual characters. +if test -f "${ac_aux_dir}config.guess"; then + ac_config_guess="$SHELL ${ac_aux_dir}config.guess" +fi +if test -f "${ac_aux_dir}config.sub"; then + ac_config_sub="$SHELL ${ac_aux_dir}config.sub" +fi +if test -f "$ac_aux_dir/configure"; then + ac_configure="$SHELL ${ac_aux_dir}configure" +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,) + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&5 +printf '%s\n' "$as_me: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&2;} + ac_cache_corrupted=: ;; + ,set) + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was not set in the previous run" >&5 +printf '%s\n' "$as_me: error: '$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= + for ac_val in x $ac_old_val; do + ac_old_val_w="$ac_old_val_w $ac_val" + done + ac_new_val_w= + for ac_val in x $ac_new_val; do + ac_new_val_w="$ac_new_val_w $ac_val" + done + if test "$ac_old_val_w" != "$ac_new_val_w"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' has changed since the previous run:" >&5 +printf '%s\n' "$as_me: error: '$ac_var' has changed since the previous run:" >&2;} + ac_cache_corrupted=: + else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&5 +printf '%s\n' "$as_me: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&2;} + eval $ac_var=\$ac_old_val + fi + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: former value: '$ac_old_val'" >&5 +printf '%s\n' "$as_me: former value: '$ac_old_val'" >&2;} + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: current value: '$ac_new_val'" >&5 +printf '%s\n' "$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=`printf '%s\n' "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;; + *) ac_arg=$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 $ac_cache_corrupted; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 +printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;} + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5 +printf '%s\n' "$as_me: error: changes in the environment can compromise the build" >&2;} + as_fn_error $? "run '${MAKE-make} distclean' and/or 'rm $cache_file' + and start over" "$LINENO" 5 +fi +## -------------------- ## +## Main body of script. ## +## -------------------- ## + + +# Determine whether it's possible to make 'echo' print without a newline. +# These variables are no longer used directly by Autoconf, but are AC_SUBSTed +# for compatibility with existing Makefiles. +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 + +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="#ifndef _WIN32 +# define _GNU_SOURCE 1 /* for struct ucred on Linux */ +#endif +$ac_includes_default + +#ifdef _WIN32 +# include +# include +# define IPV6_V6ONLY 27 +#endif + +#ifdef HAVE_LIMITS_H +# include +#endif +#ifdef HAVE_STDLIB_H +# include +#endif +#ifdef HAVE_UNISTD_H +#include +#endif +#ifdef HAVE_SYS_TYPES_H +# include +#endif +#ifdef HAVE_FCNTL_H +# include +#endif +#ifdef HAVE_SYS_UIO_H +# include +#endif +#ifdef HAVE_SYS_SOCKET_H +# include +#endif +#ifdef HAVE_NETINET_IN_H +# include +#endif +#ifdef HAVE_NETINET_TCP_H +# include +#endif +#ifdef HAVE_SYS_UN_H +# include +#endif +#ifdef HAVE_ARPA_INET_H +# include +#endif +#ifdef HAVE_NETDB_H +#include +#endif +#ifdef HAVE_NET_IF_H +# include +#endif +#ifdef HAVE_NETIOAPI_H +# include +#endif +" + + + +ac_config_headers="$ac_config_headers include/HsNetworkConfig.h" + + + + + + # 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 + +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking build system type" >&5 +printf %s "checking build system type... " >&6; } +if test ${ac_cv_build+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) ac_build_alias=$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 + ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5 +printf '%s\n' "$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 $build_os in *\ *) build_os=`printf '%s\n' "$build_os" | sed 's/ /-/g'`;; esac + + +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking host system type" >&5 +printf %s "checking host system type... " >&6; } +if test ${ac_cv_host+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test "x$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 + ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5 +printf '%s\n' "$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 $host_os in *\ *) host_os=`printf '%s\n' "$host_os" | sed 's/ /-/g'`;; esac + + + + +# Check whether --with-cc was given. +if test ${with_cc+y} +then : + withval=$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=$2 +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +printf %s "checking for $ac_word... " >&6; } +if test ${ac_cv_prog_CC+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test -n "$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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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="${ac_tool_prefix}gcc" + printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi ;; +esac +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +printf '%s\n' "$CC" >&6; } +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +fi + + +fi +if test -z "$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=$2 +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +printf %s "checking for $ac_word... " >&6; } +if test ${ac_cv_prog_ac_ct_CC+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test -n "$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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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" + printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi ;; +esac +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +printf '%s\n' "$ac_ct_CC" >&6; } +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +fi + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +printf '%s\n' "$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=$2 +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +printf %s "checking for $ac_word... " >&6; } +if test ${ac_cv_prog_CC+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test -n "$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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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="${ac_tool_prefix}cc" + printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi ;; +esac +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +printf '%s\n' "$CC" >&6; } +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +fi + + + fi +fi +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +printf %s "checking for $ac_word... " >&6; } +if test ${ac_cv_prog_CC+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test -n "$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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + printf '%s\n' "$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+' '}$@" + fi +fi +fi ;; +esac +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +printf '%s\n' "$CC" >&6; } +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +fi + + +fi +if test -z "$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=$2 +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +printf %s "checking for $ac_word... " >&6; } +if test ${ac_cv_prog_CC+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test -n "$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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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" + printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi ;; +esac +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +printf '%s\n' "$CC" >&6; } +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +fi + + + test -n "$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=$2 +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +printf %s "checking for $ac_word... " >&6; } +if test ${ac_cv_prog_ac_ct_CC+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test -n "$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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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="$ac_prog" + printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi ;; +esac +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +printf '%s\n' "$ac_ct_CC" >&6; } +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +fi + + + test -n "$ac_ct_CC" && break +done + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +fi + +fi +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args. +set dummy ${ac_tool_prefix}clang; ac_word=$2 +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +printf %s "checking for $ac_word... " >&6; } +if test ${ac_cv_prog_CC+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test -n "$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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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="${ac_tool_prefix}clang" + printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi ;; +esac +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +printf '%s\n' "$CC" >&6; } +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "clang", so it can be a program name with args. +set dummy clang; ac_word=$2 +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +printf %s "checking for $ac_word... " >&6; } +if test ${ac_cv_prog_ac_ct_CC+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) if test -n "$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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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="clang" + printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi ;; +esac +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +printf '%s\n' "$ac_ct_CC" >&6; } +else + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +fi + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +printf '%s\n' "$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 + +fi + + +test -z "$CC" && { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 +printf '%s\n' "$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. +printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5 +set X $ac_compile +ac_compiler=$2 +for ac_option in --version -v -V -qversion -version; do + { { ac_try="$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}: $ac_try_echo\"" +printf '%s\n' "$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 + printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } +done + +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main (void) +{ + + ; + 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. +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5 +printf %s "checking whether the C compiler works... " >&6; } +ac_link_default=`printf '%s\n' "$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}: $ac_try_echo\"" +printf '%s\n' "$ac_try_echo"; } >&5 + (eval "$ac_link_default") 2>&5 + ac_status=$? + printf '%s\n' "$as_me:${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 ${ac_cv_exeext+y} && test "$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 "$ac_cv_exeext" = no && ac_cv_exeext= + +else case e in #( + e) ac_file='' ;; +esac +fi +if test -z "$ac_file" +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5 +printf '%s\n' "no" >&6; } +printf '%s\n' "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 +printf '%s\n' "$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 case e in #( + e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +printf '%s\n' "yes" >&6; } ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5 +printf %s "checking for C compiler default output file name... " >&6; } +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5 +printf '%s\n' "$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=$ac_clean_files_save +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5 +printf %s "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}: $ac_try_echo\"" +printf '%s\n' "$ac_try_echo"; } >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + printf '%s\n' "$as_me:${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 case e in #( + e) { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 +printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;} +as_fn_error $? "cannot compute suffix of executables: cannot compile and link +See 'config.log' for more details" "$LINENO" 5; } ;; +esac +fi +rm -f conftest conftest$ac_cv_exeext +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5 +printf '%s\n' "$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 +int +main (void) +{ +FILE *f = fopen ("conftest.out", "w"); + if (!f) + return 1; + return ferror (f) || fclose (f) != 0; + + ; + return 0; +} +_ACEOF +ac_clean_files="$ac_clean_files conftest.out" +# Check that the compiler produces executables we can run. If not, either +# the compiler is broken, or we cross compile. +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5 +printf %s "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}: $ac_try_echo\"" +printf '%s\n' "$ac_try_echo"; } >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + printf '%s\n' "$as_me:${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}: $ac_try_echo\"" +printf '%s\n' "$ac_try_echo"; } >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + printf '%s\n' "$as_me:${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 + { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 +printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;} +as_fn_error 77 "cannot run C compiled programs. +If you meant to cross compile, use '--host'. +See 'config.log' for more details" "$LINENO" 5; } + fi + fi +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5 +printf '%s\n' "$cross_compiling" >&6; } + +rm -f conftest.$ac_ext conftest$ac_cv_exeext \ + conftest.o conftest.obj conftest.out +ac_clean_files=$ac_clean_files_save +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5 +printf %s "checking for suffix of object files... " >&6; } +if test ${ac_cv_objext+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main (void) +{ + + ; + 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}: $ac_try_echo\"" +printf '%s\n' "$ac_try_echo"; } >&5 + (eval "$ac_compile") 2>&5 + ac_status=$? + printf '%s\n' "$as_me:${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 case e in #( + e) printf '%s\n' "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 +printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;} +as_fn_error $? "cannot compute suffix of object files: cannot compile +See 'config.log' for more details" "$LINENO" 5; } ;; +esac +fi +rm -f conftest.$ac_cv_objext conftest.$ac_ext ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5 +printf '%s\n' "$ac_cv_objext" >&6; } +OBJEXT=$ac_cv_objext +ac_objext=$OBJEXT +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C" >&5 +printf %s "checking whether the compiler supports GNU C... " >&6; } +if test ${ac_cv_c_compiler_gnu+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main (void) +{ +#ifndef __GNUC__ + choke me +#endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + ac_compiler_gnu=yes +else case e in #( + e) ac_compiler_gnu=no ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext +ac_cv_c_compiler_gnu=$ac_compiler_gnu + ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5 +printf '%s\n' "$ac_cv_c_compiler_gnu" >&6; } +ac_compiler_gnu=$ac_cv_c_compiler_gnu + +if test $ac_compiler_gnu = yes; then + GCC=yes +else + GCC= +fi +ac_test_CFLAGS=${CFLAGS+y} +ac_save_CFLAGS=$CFLAGS +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5 +printf %s "checking whether $CC accepts -g... " >&6; } +if test ${ac_cv_prog_cc_g+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) ac_save_c_werror_flag=$ac_c_werror_flag + ac_c_werror_flag=yes + ac_cv_prog_cc_g=no + CFLAGS="-g" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main (void) +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + ac_cv_prog_cc_g=yes +else case e in #( + e) CFLAGS="" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main (void) +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + +else case e in #( + e) ac_c_werror_flag=$ac_save_c_werror_flag + CFLAGS="-g" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main (void) +{ + + ; + 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.beam conftest.$ac_ext ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext + ac_c_werror_flag=$ac_save_c_werror_flag ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5 +printf '%s\n' "$ac_cv_prog_cc_g" >&6; } +if test $ac_test_CFLAGS; then + CFLAGS=$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 "$GCC" = yes; then + CFLAGS="-O2" + else + CFLAGS= + fi +fi +ac_prog_cc_stdc=no +if test x$ac_prog_cc_stdc = xno +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C23 features" >&5 +printf %s "checking for $CC option to enable C23 features... " >&6; } +if test ${ac_cv_prog_cc_c23+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) ac_cv_prog_cc_c23=no +ac_save_CC=$CC +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$ac_c_conftest_c23_program +_ACEOF +for ac_arg in '' -std=gnu23 +do + CC="$ac_save_CC $ac_arg" + if ac_fn_c_try_compile "$LINENO" +then : + ac_cv_prog_cc_c23=$ac_arg +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam + test "x$ac_cv_prog_cc_c23" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC ;; +esac +fi + +if test "x$ac_cv_prog_cc_c23" = xno +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +printf '%s\n' "unsupported" >&6; } +else case e in #( + e) if test "x$ac_cv_prog_cc_c23" = x +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +printf '%s\n' "none needed" >&6; } +else case e in #( + e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c23" >&5 +printf '%s\n' "$ac_cv_prog_cc_c23" >&6; } + CC="$CC $ac_cv_prog_cc_c23" ;; +esac +fi + ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c23 + ac_prog_cc_stdc=c23 ;; +esac +fi +fi +if test x$ac_prog_cc_stdc = xno +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5 +printf %s "checking for $CC option to enable C11 features... " >&6; } +if test ${ac_cv_prog_cc_c11+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) ac_cv_prog_cc_c11=no +ac_save_CC=$CC +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$ac_c_conftest_c11_program +_ACEOF +for ac_arg in '' -std=gnu11 -std:c11 +do + CC="$ac_save_CC $ac_arg" + if ac_fn_c_try_compile "$LINENO" +then : + ac_cv_prog_cc_c11=$ac_arg +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam + test "x$ac_cv_prog_cc_c11" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC ;; +esac +fi + +if test "x$ac_cv_prog_cc_c11" = xno +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +printf '%s\n' "unsupported" >&6; } +else case e in #( + e) if test "x$ac_cv_prog_cc_c11" = x +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +printf '%s\n' "none needed" >&6; } +else case e in #( + e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5 +printf '%s\n' "$ac_cv_prog_cc_c11" >&6; } + CC="$CC $ac_cv_prog_cc_c11" ;; +esac +fi + ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11 + ac_prog_cc_stdc=c11 ;; +esac +fi +fi +if test x$ac_prog_cc_stdc = xno +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5 +printf %s "checking for $CC option to enable C99 features... " >&6; } +if test ${ac_cv_prog_cc_c99+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) ac_cv_prog_cc_c99=no +ac_save_CC=$CC +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$ac_c_conftest_c99_program +_ACEOF +for ac_arg in '' -std=gnu99 -std=c99 -c99 -qlanglvl=extc1x -qlanglvl=extc99 -AC99 -D_STDC_C99= +do + CC="$ac_save_CC $ac_arg" + if ac_fn_c_try_compile "$LINENO" +then : + ac_cv_prog_cc_c99=$ac_arg +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam + test "x$ac_cv_prog_cc_c99" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC ;; +esac +fi + +if test "x$ac_cv_prog_cc_c99" = xno +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +printf '%s\n' "unsupported" >&6; } +else case e in #( + e) if test "x$ac_cv_prog_cc_c99" = x +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +printf '%s\n' "none needed" >&6; } +else case e in #( + e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5 +printf '%s\n' "$ac_cv_prog_cc_c99" >&6; } + CC="$CC $ac_cv_prog_cc_c99" ;; +esac +fi + ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99 + ac_prog_cc_stdc=c99 ;; +esac +fi +fi +if test x$ac_prog_cc_stdc = xno +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5 +printf %s "checking for $CC option to enable C89 features... " >&6; } +if test ${ac_cv_prog_cc_c89+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) ac_cv_prog_cc_c89=no +ac_save_CC=$CC +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$ac_c_conftest_c89_program +_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 conftest.beam + test "x$ac_cv_prog_cc_c89" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC ;; +esac +fi + +if test "x$ac_cv_prog_cc_c89" = xno +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +printf '%s\n' "unsupported" >&6; } +else case e in #( + e) if test "x$ac_cv_prog_cc_c89" = x +then : + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +printf '%s\n' "none needed" >&6; } +else case e in #( + e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5 +printf '%s\n' "$ac_cv_prog_cc_c89" >&6; } + CC="$CC $ac_cv_prog_cc_c89" ;; +esac +fi + ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89 + ac_prog_cc_stdc=c89 ;; +esac +fi +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 + + + +# Check whether --with-compiler was given. +if test ${with_compiler+y} +then : + withval=$with_compiler; HC=$withval +fi + + +# Check whether --with-hc was given. +if test ${with_hc+y} +then : + withval=$with_hc; HC=$withval +fi + +if test -z "$HC" +then : + HC=ghc +fi + + +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5 +printf %s "checking for an ANSI C-conforming const... " >&6; } +if test ${ac_cv_c_const+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main (void) +{ + +#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}; + /* IBM 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; + } + { /* Derived from code rejected by Sun C 1.0 and similar vintage. */ + int x[] = {25, 17}; + typedef int const *iptr; + iptr foo = &x[0]; + ++foo; + if (!*foo) return 0; + } + { /* IBM 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 "$LINENO" +then : + ac_cv_c_const=yes +else case e in #( + e) ac_cv_c_const=no ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5 +printf '%s\n' "$ac_cv_c_const" >&6; } +if test $ac_cv_c_const = no; then + +printf '%s\n' "#define const /**/" >>confdefs.h + +fi + + +ac_header= ac_cache= +for ac_item in $ac_header_c_list +do + if test $ac_cache; then + ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default" + if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then + printf '%s\n' "#define $ac_item 1" >> confdefs.h + fi + ac_header= ac_cache= + elif test $ac_header; then + ac_cache=$ac_item + else + ac_header=$ac_item + fi +done + + + + + + + + +if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes +then : + +printf '%s\n' "#define STDC_HEADERS 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "limits.h" "ac_cv_header_limits_h" "$ac_includes_default" +if test "x$ac_cv_header_limits_h" = xyes +then : + printf '%s\n' "#define HAVE_LIMITS_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "stdlib.h" "ac_cv_header_stdlib_h" "$ac_includes_default" +if test "x$ac_cv_header_stdlib_h" = xyes +then : + printf '%s\n' "#define HAVE_STDLIB_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "unistd.h" "ac_cv_header_unistd_h" "$ac_includes_default" +if test "x$ac_cv_header_unistd_h" = xyes +then : + printf '%s\n' "#define HAVE_UNISTD_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "sys/types.h" "ac_cv_header_sys_types_h" "$ac_includes_default" +if test "x$ac_cv_header_sys_types_h" = xyes +then : + printf '%s\n' "#define HAVE_SYS_TYPES_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "fcntl.h" "ac_cv_header_fcntl_h" "$ac_includes_default" +if test "x$ac_cv_header_fcntl_h" = xyes +then : + printf '%s\n' "#define HAVE_FCNTL_H 1" >>confdefs.h + +fi + +ac_fn_c_check_header_compile "$LINENO" "sys/uio.h" "ac_cv_header_sys_uio_h" "$ac_includes_default" +if test "x$ac_cv_header_sys_uio_h" = xyes +then : + printf '%s\n' "#define HAVE_SYS_UIO_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "sys/socket.h" "ac_cv_header_sys_socket_h" "$ac_includes_default" +if test "x$ac_cv_header_sys_socket_h" = xyes +then : + printf '%s\n' "#define HAVE_SYS_SOCKET_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "netinet/in.h" "ac_cv_header_netinet_in_h" "$ac_includes_default" +if test "x$ac_cv_header_netinet_in_h" = xyes +then : + printf '%s\n' "#define HAVE_NETINET_IN_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "netinet/tcp.h" "ac_cv_header_netinet_tcp_h" "$ac_includes_default" +if test "x$ac_cv_header_netinet_tcp_h" = xyes +then : + printf '%s\n' "#define HAVE_NETINET_TCP_H 1" >>confdefs.h + +fi + +ac_fn_c_check_header_compile "$LINENO" "sys/un.h" "ac_cv_header_sys_un_h" "$ac_includes_default" +if test "x$ac_cv_header_sys_un_h" = xyes +then : + printf '%s\n' "#define HAVE_SYS_UN_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "arpa/inet.h" "ac_cv_header_arpa_inet_h" "$ac_includes_default" +if test "x$ac_cv_header_arpa_inet_h" = xyes +then : + printf '%s\n' "#define HAVE_ARPA_INET_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "netdb.h" "ac_cv_header_netdb_h" "$ac_includes_default" +if test "x$ac_cv_header_netdb_h" = xyes +then : + printf '%s\n' "#define HAVE_NETDB_H 1" >>confdefs.h + +fi + +ac_fn_c_check_header_compile "$LINENO" "net/if.h" "ac_cv_header_net_if_h" "$ac_includes_default" +if test "x$ac_cv_header_net_if_h" = xyes +then : + printf '%s\n' "#define HAVE_NET_IF_H 1" >>confdefs.h + +fi +ac_fn_c_check_header_compile "$LINENO" "netioapi.h" "ac_cv_header_netioapi_h" "$ac_includes_default" +if test "x$ac_cv_header_netioapi_h" = xyes +then : + printf '%s\n' "#define HAVE_NETIOAPI_H 1" >>confdefs.h + +fi + + +ac_fn_c_check_type "$LINENO" "struct ucred" "ac_cv_type_struct_ucred" "$ac_includes_default" +if test "x$ac_cv_type_struct_ucred" = xyes +then : + +printf '%s\n' "#define HAVE_STRUCT_UCRED 1" >>confdefs.h + + +fi + + +ac_fn_c_check_func "$LINENO" "gai_strerror" "ac_cv_func_gai_strerror" +if test "x$ac_cv_func_gai_strerror" = xyes +then : + printf '%s\n' "#define HAVE_GAI_STRERROR 1" >>confdefs.h + +fi +ac_fn_c_check_func "$LINENO" "gethostent" "ac_cv_func_gethostent" +if test "x$ac_cv_func_gethostent" = xyes +then : + printf '%s\n' "#define HAVE_GETHOSTENT 1" >>confdefs.h + +fi +ac_fn_c_check_func "$LINENO" "accept4" "ac_cv_func_accept4" +if test "x$ac_cv_func_accept4" = xyes +then : + printf '%s\n' "#define HAVE_ACCEPT4 1" >>confdefs.h + +fi + +ac_fn_c_check_func "$LINENO" "getpeereid" "ac_cv_func_getpeereid" +if test "x$ac_cv_func_getpeereid" = xyes +then : + printf '%s\n' "#define HAVE_GETPEEREID 1" >>confdefs.h + +fi + + +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC options to detect undeclared functions" >&5 +printf %s "checking for $CC options to detect undeclared functions... " >&6; } +if test ${ac_cv_c_undeclared_builtin_options+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) ac_save_CFLAGS=$CFLAGS + ac_cv_c_undeclared_builtin_options='cannot detect' + for ac_arg in '' -fno-builtin; do + CFLAGS="$ac_save_CFLAGS $ac_arg" + # This test program should *not* compile successfully. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main (void) +{ +(void) strchr; + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + +else case e in #( + e) # This test program should compile successfully. + # No library function is consistently available on + # freestanding implementations, so test against a dummy + # declaration. Include always-available headers on the + # off chance that they somehow elicit warnings. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +#include +#include +#include +extern void ac_decl (int, char *); + +int +main (void) +{ +(void) ac_decl (0, (char *) 0); + (void) ac_decl; + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + if test x"$ac_arg" = x +then : + ac_cv_c_undeclared_builtin_options='none needed' +else case e in #( + e) ac_cv_c_undeclared_builtin_options=$ac_arg ;; +esac +fi + break +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext + done + CFLAGS=$ac_save_CFLAGS + ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_undeclared_builtin_options" >&5 +printf '%s\n' "$ac_cv_c_undeclared_builtin_options" >&6; } + case $ac_cv_c_undeclared_builtin_options in #( + 'cannot detect') : + { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5 +printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;} +as_fn_error $? "cannot make $CC report undeclared builtins +See 'config.log' for more details" "$LINENO" 5; } ;; #( + 'none needed') : + ac_c_undeclared_builtin_options='' ;; #( + *) : + ac_c_undeclared_builtin_options=$ac_cv_c_undeclared_builtin_options ;; +esac + +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC options to ignore future-version functions" >&5 +printf %s "checking for $CC options to ignore future-version functions... " >&6; } +if test ${ac_cv_c_future_darwin_options+y} +then : + printf %s "(cached) " >&6 +else case e in #( + e) ac_compile_saved="$ac_compile" + ac_compile="$ac_compile -Werror=unguarded-availability-new" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#if ! (defined __APPLE__ && defined __MACH__) + #error "-Werror=unguarded-availability-new not needed here" + #endif + +int +main (void) +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO" +then : + ac_cv_c_future_darwin_options='-Werror=unguarded-availability-new' +else case e in #( + e) ac_cv_c_future_darwin_options='none needed' ;; +esac +fi +rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext + ac_compile="$ac_compile_saved" + ;; +esac +fi +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_future_darwin_options" >&5 +printf '%s\n' "$ac_cv_c_future_darwin_options" >&6; } + case $ac_cv_c_future_darwin_options in #( + 'none needed') : + ac_c_future_darwin_options='' ;; #( + *) : + ac_c_future_darwin_options=$ac_cv_c_future_darwin_options ;; +esac + +ac_fn_check_decl "$LINENO" "AI_ADDRCONFIG" "ac_cv_have_decl_AI_ADDRCONFIG" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_AI_ADDRCONFIG" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_AI_ADDRCONFIG $ac_have_decl" >>confdefs.h +ac_fn_check_decl "$LINENO" "AI_ALL" "ac_cv_have_decl_AI_ALL" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_AI_ALL" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_AI_ALL $ac_have_decl" >>confdefs.h +ac_fn_check_decl "$LINENO" "AI_NUMERICSERV" "ac_cv_have_decl_AI_NUMERICSERV" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_AI_NUMERICSERV" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_AI_NUMERICSERV $ac_have_decl" >>confdefs.h +ac_fn_check_decl "$LINENO" "AI_V4MAPPED" "ac_cv_have_decl_AI_V4MAPPED" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_AI_V4MAPPED" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_AI_V4MAPPED $ac_have_decl" >>confdefs.h + +ac_fn_check_decl "$LINENO" "IPV6_V6ONLY" "ac_cv_have_decl_IPV6_V6ONLY" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_IPV6_V6ONLY" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_IPV6_V6ONLY $ac_have_decl" >>confdefs.h + +ac_fn_check_decl "$LINENO" "IPPROTO_IP" "ac_cv_have_decl_IPPROTO_IP" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_IPPROTO_IP" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_IPPROTO_IP $ac_have_decl" >>confdefs.h +ac_fn_check_decl "$LINENO" "IPPROTO_TCP" "ac_cv_have_decl_IPPROTO_TCP" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_IPPROTO_TCP" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_IPPROTO_TCP $ac_have_decl" >>confdefs.h +ac_fn_check_decl "$LINENO" "IPPROTO_IPV6" "ac_cv_have_decl_IPPROTO_IPV6" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_IPPROTO_IPV6" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_IPPROTO_IPV6 $ac_have_decl" >>confdefs.h + +ac_fn_check_decl "$LINENO" "SO_PEERCRED" "ac_cv_have_decl_SO_PEERCRED" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_SO_PEERCRED" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_SO_PEERCRED $ac_have_decl" >>confdefs.h + +ac_fn_check_decl "$LINENO" "IP_DONTFRAG" "ac_cv_have_decl_IP_DONTFRAG" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_IP_DONTFRAG" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_IP_DONTFRAG $ac_have_decl" >>confdefs.h + +ac_fn_check_decl "$LINENO" "IP_MTU_DISCOVER" "ac_cv_have_decl_IP_MTU_DISCOVER" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS" +if test "x$ac_cv_have_decl_IP_MTU_DISCOVER" = xyes +then : + ac_have_decl=1 +else case e in #( + e) ac_have_decl=0 ;; +esac +fi +printf '%s\n' "#define HAVE_DECL_IP_MTU_DISCOVER $ac_have_decl" >>confdefs.h + + +ac_fn_c_check_member "$LINENO" "struct msghdr" "msg_control" "ac_cv_member_struct_msghdr_msg_control" "$ac_includes_default" +if test "x$ac_cv_member_struct_msghdr_msg_control" = xyes +then : + +printf '%s\n' "#define HAVE_STRUCT_MSGHDR_MSG_CONTROL 1" >>confdefs.h + + +fi +ac_fn_c_check_member "$LINENO" "struct msghdr" "msg_accrights" "ac_cv_member_struct_msghdr_msg_accrights" "$ac_includes_default" +if test "x$ac_cv_member_struct_msghdr_msg_accrights" = xyes +then : + +printf '%s\n' "#define HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS 1" >>confdefs.h + + +fi + +ac_fn_c_check_member "$LINENO" "struct sockaddr" "sa_len" "ac_cv_member_struct_sockaddr_sa_len" "$ac_includes_default" +if test "x$ac_cv_member_struct_sockaddr_sa_len" = xyes +then : + +printf '%s\n' "#define HAVE_STRUCT_SOCKADDR_SA_LEN 1" >>confdefs.h + + +fi + + +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating ./network.buildinfo" >&5 +printf '%s\n' "$as_me: creating ./network.buildinfo" >&6;} +echo "install-includes: HsNetworkConfig.h" > 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 + +ac_cache_dump | + sed ' + /^ac_cv_env_/b end + t clear + :clear + s/^\([^=]*\)=\(.*[{}].*\)$/test ${\1+y} || &/ + 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$cache_file" != "x/dev/null"; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5 +printf '%s\n' "$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 + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5 +printf '%s\n' "$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$//' + ac_i=`printf '%s\n' "$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}" +case $CONFIG_STATUS in #( + -*) : + CONFIG_STATUS=./$CONFIG_STATUS ;; #( + */*) : + ;; #( + *) : + CONFIG_STATUS=./$CONFIG_STATUS ;; +esac + +ac_write_fail=0 +ac_clean_CONFIG_STATUS='"$CONFIG_STATUS"' +{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5 +printf '%s\n' "$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 ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1 +then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # contradicts POSIX and common usage. Disable this. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else case e in #( + e) case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac ;; +esac +fi + + + +# Reset variables that may have inherited troublesome values from +# the environment. + +# IFS needs to be set, to space, tab, and newline, in precisely that order. +# (If _AS_PATH_WALK were called with IFS unset, it would have the +# side effect of setting IFS to empty, thus disabling word splitting.) +# Quoting is to prevent editors from complaining about space-tab. +as_nl=' +' +export as_nl +IFS=" "" $as_nl" + +PS1='$ ' +PS2='> ' +PS4='+ ' + +# Ensure predictable behavior from utilities with locale-dependent output. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# We cannot yet rely on "unset" to work, but we need these variables +# to be unset--not just set to an empty or harmless value--now, to +# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh). This construct +# also avoids known problems related to "unset" and subshell syntax +# in other old shells (e.g. bash 2.01 and pdksh 5.2.14). +for as_var in BASH_ENV ENV MAIL MAILPATH CDPATH +do eval test \${$as_var+y} \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done + +# Ensure that fds 0, 1, and 2 are open. +if (exec 3>&0) 2>/dev/null; then :; else exec 0&1) 2>/dev/null; then :; else exec 1>/dev/null; fi +if (exec 3>&2) ; then :; else exec 2>/dev/null; fi + +# The user is always right. +if ${PATH_SEPARATOR+false} :; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# 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 + case $as_dir in #((( + '') as_dir=./ ;; + */) ;; + *) as_dir=$as_dir/ ;; + esac + 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 + printf '%s\n' "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + + + +# 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 + printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: $2" >&$4 + fi + printf '%s\n' "$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 case e in #( + e) as_fn_append () + { + eval $1=\$$1\$2 + } ;; +esac +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 $(()) and expr. +if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null +then : + eval 'as_fn_arith () + { + as_val=$(( $* )) + }' +else case e in #( + e) as_fn_arith () + { + as_val=`expr "$@" || test $? -eq 1` + } ;; +esac +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 || +printf '%s\n' 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 + +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 $as_dir in #( + *\'*) as_qdir=`printf '%s\n' "$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 || +printf '%s\n' 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 "$1" +} # as_fn_executable_p +as_test_x='test -x' +as_executable_p=as_fn_executable_p + +# Sed expression to map a string onto a valid CPP name. +as_sed_cpp="y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g" +as_tr_cpp="eval sed '$as_sed_cpp'" # deprecated + +# Sed expression to map a string onto a valid variable name. +as_sed_sh="y%*+%pp%;s%[^_$as_cr_alnum]%_%g" +as_tr_sh="eval sed '$as_sed_sh'" # deprecated + + +exec 6>&1 +## ------------------------------------- ## +## Main body of "$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 3.2.7.0, which was +generated by GNU Autoconf 2.73. 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_headers in *" +"*) set x $ac_config_headers; shift; ac_config_headers=$*;; +esac + + +cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1 +# Files that config.status was made for. +config_headers="$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 $as_me by reconfiguring in the same conditions + --header=FILE[:TEMPLATE] + instantiate the configuration header FILE + +Configuration headers: +$config_headers + +Report bugs to ." + +_ACEOF +ac_cs_config=`printf '%s\n' "$ac_configure_args" | sed "$ac_safe_unquote"` +ac_cs_config_escaped=`printf '%s\n' "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\''/g"` +cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1 +ac_cs_config='$ac_cs_config_escaped' +ac_cs_version="\\ +Haskell network package config.status 3.2.7.0 +configured by $0, generated by GNU Autoconf 2.73, + with options \\"\$ac_cs_config\\" + +Copyright (C) 2026 Free Software Foundation, Inc. +This config.status script is free software; the Free Software Foundation +gives unlimited permission to copy, distribute and modify it." + +ac_pwd='$ac_pwd' +srcdir='$srcdir' +test -n "\$AWK" || { + awk '' >"$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 $ac_option in + # Handling of the options. + -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r) + ac_cs_recheck=: ;; + --version | --versio | --versi | --vers | --ver | --ve | --v | -V ) + printf '%s\n' "$ac_cs_version"; exit ;; + --config | --confi | --conf | --con | --co | --c ) + printf '%s\n' "$ac_cs_config"; exit ;; + --debug | --debu | --deb | --de | --d | -d ) + debug=: ;; + --header | --heade | --head | --hea ) + $ac_shift + case $ac_optarg in + *\'*) ac_optarg=`printf '%s\n' "$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 '$0 --help' for more information.";; + --help | --hel | -h ) + printf '%s\n' "$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' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion + shift + \printf '%s\n' "running CONFIG_SHELL=$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 $as_me. ## +_ASBOX + printf '%s\n' "$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" ;; + + *) 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 ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$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=$tmp + +# Set up the scripts for CONFIG_HEADERS section. +# No need to generate them if there are no CONFIG_HEADERS. +# This happens for instance with './config.status Makefile'. +if test -n "$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 +' >"$CONFIG_STATUS" || ac_write_fail=1 + +cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1 + for (key in D) D_is_set[key] = 1 + FS = "" +} +/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ { + line = \$ 0 + split(line, arg, " ") + if (arg[1] == "#") { + defundef = arg[2] + mac1 = arg[3] + } else { + defundef = substr(arg[1], 2) + mac1 = arg[2] + } + split(mac1, mac2, "(") #) + macro = mac2[1] + prefix = substr(line, 1, index(line, defundef) - 1) + if (D_is_set[macro]) { + suffix = P[macro] D[macro] + while (suffix ~ /[\t ]$/) { + suffix = substr(suffix, 1, length(suffix) - 1) + } + # Preserve the white space surrounding the "#". + print prefix "define", macro suffix + 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 " :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 $ac_f in *\'*) ac_f=`printf '%s\n' "$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 $as_me), people would be surprised to read: + # /* config.h. Generated by config.status. */ + configure_input='Generated from '` + printf '%s\n' "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g' + `' by configure.' + if test x"$ac_file" != x-; then + configure_input="$ac_file. $configure_input" + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5 +printf '%s\n' "$as_me: creating $ac_file" >&6;} + fi + # Neutralize special characters interpreted by sed in replacement strings. + case $configure_input in #( + *\&* | *\|* | *\\* ) + ac_sed_conf_input=`printf '%s\n' "$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 || +printf '%s\n' 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=/`printf '%s\n' "$ac_dir" | sed 's|^\.[\\/]||'` + # A ".." for each directory in $ac_dir_suffix. + ac_top_builddir_sub=`printf '%s\n' "$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 $ac_mode in + + :H) + # + # CONFIG_HEADER + # + if test x"$ac_file" != x-; then + { + printf '%s\n' "/* $configure_input */" >&1 \ + && eval '$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 + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5 +printf '%s\n' "$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 + printf '%s\n' "/* $configure_input */" >&1 \ + && eval '$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_CONFIG_STATUS= + +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=: + case $CONFIG_STATUS in #( + -*) : + ac_no_opts=-- ;; #( + *) : + ac_no_opts= ;; +esac + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $ac_no_opts "$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 "$enable_option_checking" != no; then + { printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +printf '%s\n' "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} fi diff --git a/network.cabal b/network.cabal --- a/network.cabal +++ b/network.cabal @@ -1,6 +1,6 @@ cabal-version: 1.18 name: network -version: 3.2.9.0 +version: 3.2.10.0 license: BSD3 license-file: LICENSE maintainer: Kazu Yamamoto, Tamar Christina @@ -121,6 +121,7 @@ Network.Socket.Syscall Network.Socket.Types Network.Socket.Unix + Network.Socket.Wait default-language: Haskell2010 include-dirs: include @@ -141,6 +142,7 @@ Network.Socket.ByteString.Lazy.Posix Network.Socket.Posix.Cmsg Network.Socket.Posix.CmsgHdr + Network.Socket.Posix.HostName Network.Socket.Posix.IOVec Network.Socket.Posix.MsgHdr @@ -159,8 +161,10 @@ other-modules: Network.Socket.ByteString.Lazy.Windows + Network.Socket.Win32.Cancel Network.Socket.Win32.Cmsg Network.Socket.Win32.CmsgHdr + Network.Socket.Win32.HostName Network.Socket.Win32.WSABuf Network.Socket.Win32.MsgHdr @@ -174,7 +178,8 @@ cc-options: -D_WIN32_WINNT=0x0600 build-depends: - temporary + temporary, + Win32 >=2.12.0.1 if impl(ghc >=8) default-extensions: Strict StrictData @@ -198,6 +203,7 @@ directory, HUnit, network, + stm, temporary, hspec >=2.6, QuickCheck diff --git a/tests/Network/SocketSpec.hs b/tests/Network/SocketSpec.hs --- a/tests/Network/SocketSpec.hs +++ b/tests/Network/SocketSpec.hs @@ -4,8 +4,11 @@ module Network.SocketSpec (main, spec) where import Control.Concurrent (threadDelay, forkIO) -import Control.Concurrent.MVar (readMVar) +import Control.Concurrent.MVar (newEmptyMVar, putMVar, readMVar, takeMVar) +import Control.Exception (bracket) +import Control.Concurrent.STM import Control.Monad +import Data.ByteString (ByteString) import Data.Maybe (fromJust) import Data.List (nub) import Network.Socket @@ -23,6 +26,33 @@ main :: IO () main = hspec spec +-- Send through the given action to a port nobody has bound, then receive +-- on the same socket. 'Nothing' if the receive heard nothing in time. +bounce :: (Socket -> SockAddr -> IO ()) -> IO (Maybe ByteString) +bounce send' = do + dead <- deadPort + sock <- socket AF_INET Datagram defaultProtocol + bind sock $ SockAddrInet 0 localhost + send' sock dead + -- Long enough for the unreachable to come back before the receive. + waitFor 300000 + late <- registerDelay 300000 + r <- recvFromWith sock 2048 $ check =<< readTVar late + close sock + return $ either (const Nothing) (Just . fst) r + where + localhost = tupleToHostAddress (127, 0, 0, 1) + waitFor us = do + late <- registerDelay us + atomically $ check =<< readTVar late + -- Bind a port, read it, and let it go again. + deadPort = do + s <- socket AF_INET Datagram defaultProtocol + bind s $ SockAddrInet 0 localhost + sa <- getSocketName s + close s + return sa + spec :: Spec spec = do describe "connect" $ do @@ -101,6 +131,13 @@ getSocketOption sock UserTimeout `shouldReturn` 2000 close sock + describe "DontFragment" $ do + it "can be set" $ do + sock <- socket AF_INET Stream defaultProtocol + when (isSupportedSocketOption DontFragment) $ + setSocketOption sock DontFragment 1 + close sock + describe "getAddrInfo" $ do it "works for IPv4 address" $ do let hints = defaultHints { addrFlags = [AI_NUMERICHOST, AI_ADDRCONFIG] } @@ -243,11 +280,23 @@ -} #endif + -- A send to a port nobody has bound brings an ICMP unreachable back. + -- POSIX hands it to the sender only once the socket is connected, and + -- Winsock hands it to every datagram socket; a reply bouncing off a + -- client which has gone would then end a server's receive loop. + describe "an ICMP unreachable from a send of one's own" $ do + it "is not heard by a socket which was never connected" $ + bounce (\sock dead -> void $ sendTo sock "bounce" dead) + `shouldReturn` Nothing + it "is heard by a connected one" $ + bounce (\sock dead -> connect sock dead >> void (send sock "bounce")) + `shouldThrow` anyIOException + describe "gracefulClose" $ do it "does not send TCP RST back" $ do let server sock = do void $ recv sock 1024 -- receiving "GOAWAY" - gracefulClose sock 3000 + gracefulClose sock 300 client sock = do sendAll sock "GOAWAY" threadDelay 10000 @@ -256,6 +305,62 @@ void $ recv sock 1024 tcpTest client server + describe "giving up" $ do + it "ends a receive which is told to stop, leaving the socket usable" $ do + let server sock = do + stop <- newTVarIO False + done <- newEmptyMVar + void $ forkIO $ do + r <- recvWith sock 1024 (check =<< readTVar stop) + putMVar done r + threadDelay 100000 + atomically $ writeTVar stop True + takeMVar done `shouldReturn` Left () + -- Nothing was closed, so the socket is still the + -- caller's to read. + recv sock 1024 `shouldReturn` testMsg + client sock = do + threadDelay 300000 + void $ send sock testMsg + tcpTest client server + + -- A tie goes to the data: answering Left would leave bytes + -- already received unread, which for a stream loses them. + it "takes what is there even once the caller has given up" $ do + let server sock = do + threadDelay 100000 + gone <- newTVarIO True + recvWith sock 1024 (check =<< readTVar gone) + `shouldReturn` Right testMsg + client sock = void $ send sock testMsg + tcpTest client server + + it "ends an accept which is told to stop, leaving the socket usable" $ + withListener $ \sock port -> do + stop <- newTVarIO False + done <- newEmptyMVar + void $ forkIO $ do + r <- acceptWith sock (check =<< readTVar stop) + putMVar done $ + either (const True) (const False) + (r :: Either () (Socket, SockAddr)) + threadDelay 100000 + atomically $ writeTVar stop True + takeMVar done `shouldReturn` True + -- The listening socket was not closed to end that + -- accept, so it still accepts. + bracket (socket AF_INET Stream defaultProtocol) close $ \cli -> do + connect cli $ SockAddrInet port $ tupleToHostAddress (127, 0, 0, 1) + bracket (fst <$> accept sock) close $ \_ -> return () + + it "tells a socket closed under an accept from other errors" $ do + sock <- socket AF_INET Stream defaultProtocol + bind sock $ SockAddrInet 0 $ tupleToHostAddress (127, 0, 0, 1) + listen sock 1 + close sock + r <- tryIOError $ accept sock + either isClosedSocketError (const False) r `shouldBe` True + describe "socketToFd" $ do it "socketToFd can send using fd" $ do let server sock = do @@ -402,6 +507,10 @@ it "holds for CmsgId" $ forAll cmsgidGen $ \x -> (read . show $ x) == (x :: CmsgId) + describe "hostname" $ do + it "is not empty" $ do + hostname <- getHostName + hostname `shouldSatisfy` (not . null) -- Type-specific generators with strong bias towards pattern synonyms @@ -478,3 +587,13 @@ , CmsgIdIPv6PktInfo , CmsgIdFds ] + +-- A listening socket on the loopback, and the port it got. +withListener :: (Socket -> PortNumber -> IO a) -> IO a +withListener action = + bracket (socket AF_INET Stream defaultProtocol) close $ \sock -> do + setSocketOption sock ReuseAddr 1 + bind sock $ SockAddrInet 0 $ tupleToHostAddress (127, 0, 0, 1) + listen sock 1 + port <- socketPort sock + action sock port