From c98d164a6a2c3d93bfb10d44c946bc3ed56f14e7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Tue, 13 Nov 2012 19:01:51 +0200
Subject: [PATCH] configure: Check for -Werror parameters on clang
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Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit 9eded0fe412e610ee8944681d5c554b723463e96)
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
---
 configure | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure b/configure
index 13066e224a..e12b88d9d8 100755
--- a/configure
+++ b/configure
@@ -3141,6 +3141,8 @@ elif enabled llvm_gcc; then
 elif enabled clang; then
     check_cflags -mllvm -stack-alignment=16
     check_cflags -Qunused-arguments
+    check_cflags -Werror=implicit-function-declaration
+    check_cflags -Werror=missing-prototypes
 elif enabled armcc; then
     # 2523: use of inline assembler is deprecated
     add_cflags -W${armcc_opt},--diag_suppress=2523