From eb2e280f9c59b66965c9316eadc4c113a13ca744 Mon Sep 17 00:00:00 2001
From: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Date: Mon, 19 Mar 2012 13:20:42 -0300
Subject: build-sys: do not set CFLAGS directly

Set a separate variable for adding warning flags. Build systems are not
supposed to change CFLAGS and LDFLAGS, these are user variables.

Reference: http://www.gnu.org/software/automake/manual/html_node/Flag-Variables-Ordering.html
---
 configure.ac | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 47a08dda64..ac56bc7176 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,7 +60,7 @@ if test -z "$GPERF" ; then
         AC_MSG_ERROR([*** gperf not found])
 fi
 
-CC_CHECK_CFLAGS_APPEND([ \
+CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
         -pipe \
         -Wall \
         -W \
@@ -105,6 +105,7 @@ CC_CHECK_CFLAGS_APPEND([ \
         -fdata-sections \
         -Wl,--as-needed \
         -Wl,--gc-sections])
+AC_SUBST([WARNINGFLAGS], $with_cflags)
 
 LT_PREREQ(2.2)
 LT_INIT
-- 
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