-# getdate.m4 serial 5
-dnl Copyright (C) 2002, 2003, 2004 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.
+# getdate.m4 serial 14
+dnl Copyright (C) 2002-2006, 2008, 2009 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.
+
+dnl Define HAVE_COMPOUND_LITERALS if the C compiler supports compound literals
+dnl as in ISO C99.
+dnl Note that compound literals such as (struct s) { 3, 4 } can be used for
+dnl initialization of stack-allocated variables, but are not constant
+dnl expressions and therefore cannot be used as initializer for global or
+dnl static variables (even though gcc supports this in pre-C99 mode).
+AC_DEFUN([gl_C_COMPOUND_LITERALS],
+[
+ AC_CACHE_CHECK([for compound literals], [gl_cv_compound_literals],
+ [AC_TRY_COMPILE([struct s { int i, j; };],
+ [struct s t = (struct s) { 3, 4 };
+ if (t.i != 0) return 0;],
+ gl_cv_compound_literals=yes,
+ gl_cv_compound_literals=no)])
+ if test $gl_cv_compound_literals = yes; then
+ AC_DEFINE([HAVE_COMPOUND_LITERALS], [1],
+ [Define if you have compound literals.])
+ fi
+])