freetype/builds/unix/ft-munmap.m4
Werner Lemberg 62c2096a33 * builds/unix/ft-munmap.m4: New file, extracted FT_MUNMAP_DECL and
FT_MUNMAP_PARAM from aclocal.m4 into here, so aclocal.m4 can be
rebuilt from sources.  Set macro serial to 1, and use third argument
to AC_DEFINE for our two custom symbols, so ftconfig.in could one day
be rebuilt with autoheader (not recommended now, ftconfig.in is a
custom source file)
2002-05-24 22:05:43 +00:00

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## FreeType specific autoconf tests
# serial 1 FT_MUNMAP_DECL
AC_DEFUN(FT_MUNMAP_DECL,
[AC_MSG_CHECKING([whether munmap must be declared])
AC_CACHE_VAL(ft_cv_munmap_decl,
[AC_TRY_COMPILE([
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/mman.h>],
[char *(*pfn) = (char *(*))munmap],
ft_cv_munmap_decl=no,
ft_cv_munmap_decl=yes)])
AC_MSG_RESULT($ft_cv_munmap_decl)
if test $ft_cv_munmap_decl = yes; then
AC_DEFINE(NEED_MUNMAP_DECL,,
[Define to 1 if munmap() is not defined in <sys/mman.h>])
fi])
AC_DEFUN(FT_MUNMAP_PARAM,
[AC_MSG_CHECKING([for munmap's first parameter type])
AC_TRY_COMPILE([
#include <unistd.h>
#include <sys/mman.h>
int munmap(void *, size_t);],,
AC_MSG_RESULT([void *]);AC_DEFINE(MUNMAP_USES_VOIDP,,
[Define to 1 if the first argument of munmap is of type void *]),
AC_MSG_RESULT([char *]))
])