link: Update documentation.

[gnulib.git] / m4 / langinfo_h.m4

diff --git a/m4/langinfo_h.m4 b/m4/langinfo_h.m4
index 4975734..11a5698 100644 (file)
--- a/m4/langinfo_h.m4
+++ b/m4/langinfo_h.m4
@@ -1,5 +1,5 @@
-# langinfo_h.m4 serial 1
-dnl Copyright (C) 2009 Free Software Foundation, Inc.
+# langinfo_h.m4 serial 6
+dnl Copyright (C) 2009-2010 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.
@@ -11,6 +11,7 @@ AC_DEFUN([gl_LANGINFO_H],
   dnl Persuade glibc-2.0.6 <langinfo.h> to define CODESET.
   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
+  dnl <langinfo.h> is always overridden, because of GNULIB_POSIXCHECK.
   gl_CHECK_NEXT_HEADERS([langinfo.h])
 
   dnl Determine whether <langinfo.h> exists. It is missing on mingw and BeOS.
@@ -52,19 +53,19 @@ int a = ERA;
   AC_SUBST([HAVE_LANGINFO_CODESET])
   AC_SUBST([HAVE_LANGINFO_ERA])
 
-  if test $HAVE_LANGINFO_H = 1 && test $HAVE_LANGINFO_CODESET = 1 && test $HAVE_LANGINFO_ERA = 1; then
-    LANGINFO_H=
-  else
-    LANGINFO_H='langinfo.h'
-  fi
-  AC_SUBST([LANGINFO_H])
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <langinfo.h>
+    ]], [nl_langinfo])
 ])
 
 AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
 AC_DEFUN([gl_LANGINFO_H_DEFAULTS],