Merge commit 'a39d4083cab589d7cd6a13e8a4b8db8875261d75'

[gnulib.git] / m4 / rpmatch.m4

diff --git a/m4/rpmatch.m4 b/m4/rpmatch.m4
index 21c2827..6fd0f5d 100644 (file)
--- a/m4/rpmatch.m4
+++ b/m4/rpmatch.m4
@@ -1,21 +1,31 @@
-# rpmatch.m4 serial 2
-dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# rpmatch.m4 serial 10
+dnl Copyright (C) 2002-2003, 2007-2014 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_FUNC_RPMATCH],
 [
-  AC_REPLACE_FUNCS(rpmatch)
+  dnl Persuade glibc <stdlib.h> to declare rpmatch().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_CHECK_FUNCS([rpmatch])
   if test $ac_cv_func_rpmatch = no; then
-    gl_PREREQ_RPMATCH
+    HAVE_RPMATCH=0
   fi
 ])
 
 # Prerequisites of lib/rpmatch.c.
 AC_DEFUN([gl_PREREQ_RPMATCH], [
-  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CACHE_CHECK([for nl_langinfo and YESEXPR], [gl_cv_langinfo_yesexpr],
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
+       [[char* cs = nl_langinfo(YESEXPR); return !cs;]])],
+       [gl_cv_langinfo_yesexpr=yes],
+       [gl_cv_langinfo_yesexpr=no])
+    ])
+  if test $gl_cv_langinfo_yesexpr = yes; then
+    AC_DEFINE([HAVE_LANGINFO_YESEXPR], [1],
+      [Define if you have <langinfo.h> and nl_langinfo(YESEXPR).])
+  fi
 ])
-