From 044c81b644810e003a51f3178b413e01f3eb5088 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Wed, 11 Jun 2014 08:08:33 +0200
Subject: m4: update to autoconf-archive 20140228

---
 m4/ax_append_compile_flags.m4 | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'm4/ax_append_compile_flags.m4')

diff --git a/m4/ax_append_compile_flags.m4 b/m4/ax_append_compile_flags.m4
index 425417008..dc7b86600 100644
--- a/m4/ax_append_compile_flags.m4
+++ b/m4/ax_append_compile_flags.m4
@@ -54,10 +54,12 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.
 
-#serial 2
+#serial 4
 
 AC_DEFUN([AX_APPEND_COMPILE_FLAGS],
-[for flag in $1; do
+[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
+for flag in $1; do
   AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3])
 done
 ])dnl AX_APPEND_COMPILE_FLAGS
-- 
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