Imported Upstream version 1.5

[debian/gzip] / m4 / error.m4

diff --git a/m4/error.m4 b/m4/error.m4
index 9f1307a428e297d89b8ef96a9affe82dcf091384..5d9c70a4750aae6464ea079b9fd598105708df13 100644 (file)
--- a/m4/error.m4
+++ b/m4/error.m4
@@ -1,6 +1,6 @@
-#serial 12
+#serial 14
 
-# Copyright (C) 1996-1998, 2001-2004, 2009-2010 Free Software Foundation, Inc.
+# Copyright (C) 1996-1998, 2001-2004, 2009-2012 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -8,9 +8,15 @@
 
 AC_DEFUN([gl_ERROR],
 [
-  AC_FUNC_ERROR_AT_LINE
-  dnl Note: AC_FUNC_ERROR_AT_LINE does AC_LIBSOURCES([error.h, error.c]).
-  gl_PREREQ_ERROR
+  dnl We don't use AC_FUNC_ERROR_AT_LINE any more, because it is no longer
+  dnl maintained in Autoconf and because it invokes AC_LIBOBJ.
+  AC_CACHE_CHECK([for error_at_line], [ac_cv_lib_error_at_line],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <error.h>]],
+          [[error_at_line (0, 0, "", 0, "an error occurred");]])],
+       [ac_cv_lib_error_at_line=yes],
+       [ac_cv_lib_error_at_line=no])])
 ])
 
 # Prerequisites of lib/error.c.