prettyprinter-1.7.2: misc/version-compatibility-macros.h

#ifndef VERSION_COMPATIBILITY_MACROS
#define VERSION_COMPATIBILITY_MACROS

#ifndef MIN_VERSION_base
#error "MIN_VERSION_base macro not defined!"
#endif

-- These macros allow writing CPP compatibility hacks in a way that makes their
-- purpose much clearer than just demanding a specific version of a library.

#define FOLDABLE_TRAVERSABLE_IN_PRELUDE !defined(__MHS__)

#define LIFTA2_IN_PRELUDE               MIN_VERSION_base(4,18,0)

#define SEMIGROUP_MONOID_SUPERCLASS     MIN_VERSION_base(4,11,0)

#define FAIL_IN_MONAD                   !(MIN_VERSION_base(4,13,0))

#endif