From 8b47e1cfe1e5c65cc30b0047d8f30d2f48fa6123 Mon Sep 17 00:00:00 2001
From: Johann <johannkoenig@google.com>
Date: Mon, 28 Oct 2013 15:44:41 -0700
Subject: [PATCH] Disable aliasing when building with Clang
When building with new versions of Clang we encounter some issues. Work
around them by adding -fno-strict-aliasing when we detect Clang.
https://code.google.com/p/webm/issues/detail?id=603
Change-Id: I8e945a18a7215bcc627e7a1ee110078413259cc7
---
configure | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/configure b/configure
index 297cec4633..7a6e4f0237 100755
--- a/configure
+++ b/configure
@@ -608,7 +608,12 @@ process_toolchain() {
check_add_cflags -Wuninitialized
check_add_cflags -Wunused-variable
case ${CC} in
- *clang*) ;;
+ *clang*)
+ # libvpx and/or clang have issues with aliasing:
+ # https://code.google.com/p/webm/issues/detail?id=603
+ # work around them until they are fixed
+ check_add_cflags -fno-strict-aliasing
+ ;;
*) check_add_cflags -Wunused-but-set-variable ;;
esac
enabled extra_warnings || check_add_cflags -Wno-unused-function
--
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