From 842bd54edb28d0d420328d64eb9d26c04248aa24 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Thu, 21 Jul 2005 22:00:06 +0000
Subject: (gl_C_COMPOUND_LITERALS): New macro. (gl_GETDATE): Use it.

---
 m4/getdate.m4 | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'm4')

diff --git a/m4/getdate.m4 b/m4/getdate.m4
index 5b2f77f23..2981f139d 100644
--- a/m4/getdate.m4
+++ b/m4/getdate.m4
@@ -1,9 +1,22 @@
-# getdate.m4 serial 7
+# getdate.m4 serial 8
 dnl Copyright (C) 2002, 2003, 2004, 2005 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_C_COMPOUND_LITERALS],
+[
+  AC_CACHE_CHECK([for compound literals], gl_cv_compound_literals,
+  [AC_TRY_COMPILE([struct s { int i, j; }; struct s s = (struct s) { 1, 2 };],
+    [struct s t = (struct s) { 3, 4 };],
+    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
+])
+
 AC_DEFUN([gl_GETDATE],
 [
   AC_LIBSOURCES([getdate.h, getdate.y])
@@ -15,6 +28,7 @@ AC_DEFUN([gl_GETDATE],
 
   dnl Prerequisites of lib/getdate.y.
   AC_REQUIRE([gl_BISON])
+  AC_REQUIRE([gl_C_COMPOUND_LITERALS])
   AC_REQUIRE([AC_HEADER_STDC])
   AC_CHECK_FUNCS_ONCE(isascii)
   AC_STRUCT_TIMEZONE
-- 
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