# Check whether free (NULL) is supposed to work.
-# Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2003-2005, 2009-2013 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_FREE],
[
+ AC_REQUIRE([AC_CANONICAL_HOST])
AC_CACHE_CHECK([whether free (NULL) is known to work],
[gl_cv_func_free],
- [AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM(
- [[@%:@include <unistd.h>]],
- [[@%:@if _POSIX_VERSION < 199009L && \
- (defined unix || defined _unix || defined _unix_ \
- || defined __unix || defined __unix__)
- @%:@error "'free (NULL)' is not known to work"
- @%:@endif]])],
- [gl_cv_func_free=yes],
- [gl_cv_func_free=no])])
+ [case "$host_os" in
+ mingw*) gl_cv_func_free=yes ;;
+ *)
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[@%:@include <unistd.h>]],
+ [[@%:@if _POSIX_VERSION < 199009L && \
+ (defined unix || defined _unix || defined _unix_ \
+ || defined __unix || defined __unix__)
+ @%:@error "'free (NULL)' is not known to work"
+ @%:@endif]])],
+ [gl_cv_func_free=yes],
+ [gl_cv_func_free=no])
+ esac
+ ])
if test $gl_cv_func_free = no; then
- AC_LIBOBJ(free)
- AC_DEFINE(free, rpl_free,
+ AC_DEFINE([free], [rpl_free],
[Define to rpl_free if the replacement function should be used.])
fi
])