# Check for fnmatch.
# This is a modified version of autoconf's AC_FUNC_FNMATCH.
-# This file should be removed after Autoconf 2.54 is required.
+# This file should be simplified after Autoconf 2.57 is required.
# Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
# Thanks to John Oleynick, Franc,ois Pinard, and Paul Eggert for this test.
AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
- [#include <fnmatch.h>
+ [
+# include <stdlib.h>
+# include <fnmatch.h>
# define y(a, b, c) (fnmatch (a, b, c) == 0)
# define n(a, b, c) (fnmatch (a, b, c) == FNM_NOMATCH)
],
])# _AC_LIBOBJ_FNMATCH
-# AC_FUNC_FNMATCH_GNU
-# -------------------
-AC_DEFUN([AC_FUNC_FNMATCH_GNU],
-[AC_REQUIRE([AC_GNU_SOURCE])
-_AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],
- [rm -f lib/fnmatch.h],
- [_AC_LIBOBJ_FNMATCH])
-])# AC_FUNC_FNMATCH_GNU
+# Additional prerequisites of lib/fnmatch.c, not part of _AC_LIBOBJ_FNMATCH.
+AC_DEFUN([gl_PREREQ_FNMATCH_EXTRA],
+[
+ AC_REQUIRE([AC_HEADER_STDC])
+ AC_CHECK_HEADERS_ONCE(string.h strings.h)
+])
+
+
+AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
+[
+ _AC_FUNC_FNMATCH_IF([POSIX], [ac_cv_func_fnmatch_posix],
+ [rm -f lib/fnmatch.h],
+ [_AC_LIBOBJ_FNMATCH])
+ if test $ac_cv_func_fnmatch_posix != yes; then
+ gl_PREREQ_FNMATCH_EXTRA
+ dnl We must choose a different name for our function, since on ELF systems
+ dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
+ dnl compiled into a shared library.
+ AC_DEFINE([fnmatch], [posix_fnmatch],
+ [Define to a replacement function name for fnmatch().])
+ fi
+])
+
+
+AC_DEFUN([gl_FUNC_FNMATCH_GNU],
+[
+ dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
+ AC_REQUIRE([AC_GNU_SOURCE])
+
+ _AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],
+ [rm -f lib/fnmatch.h],
+ [_AC_LIBOBJ_FNMATCH])
+ if test $ac_cv_func_fnmatch_gnu != yes; then
+ gl_PREREQ_FNMATCH_EXTRA
+ dnl We must choose a different name for our function, since on ELF systems
+ dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
+ dnl compiled into a shared library.
+ AC_DEFINE([fnmatch], [gnu_fnmatch],
+ [Define to a replacement function name for fnmatch().])
+ fi
+])