From 7e6432015afd758ca3fd9e32d3e62b29935b0874 Mon Sep 17 00:00:00 2001
From: Niels de Vos <ndevos@redhat.com>
Date: Tue, 30 Jul 2013 18:22:48 +0200
Subject: build: use -Werror=implicit-function-declaration to detect build
 issues

There have been review requests that include a call to a non-existent
function. These problems should be detected as early as possible,
preferably before (automated) regression tests.

Bug: 990243
Change-Id: Idcf4d27f45a1a6177105d02a039363702eb8e3b9
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/5435
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
---
 configure.ac | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 0aefdd28..70cc7fd9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -594,6 +594,18 @@ else
     CFLAGS="$saved_CFLAGS $CFLAGS"
 fi
 
+# check for gcc -Werror=implicit-function-declaration
+saved_CFLAGS=$CFLAGS
+CFLAGS="-Werror=implicit-function-declaration"
+AC_MSG_CHECKING([whether $CC accepts -Werror=implicit-function-declaration])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [cc_werror_implicit=yes], [cc_werror_implicit=no])
+echo $cc_werror_implicit
+if test "x$cc_werror_implicit" = "xno"; then
+    CFLAGS="$saved_CFLAGS"
+else
+    CFLAGS="$saved_CFLAGS $CFLAGS"
+fi
+
 case $host_os in
      linux*)
      dnl        GF_LINUX_HOST_OS=1
-- 
cgit