[OE-core] [PATCH 2/2] qemu-native:fix do_compile failed with gcc 4.3.4 on x86 host

[Hongxu Jia]

Add an option `-march' to BUILD_CFLAGS, GCC 4.3.4 on x86 host needs this
option to let the atomic operations ("lock free") be available while it
is used to compile qemu-native.

[YOCTO #3563]

Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com>
---
 meta/recipes-devtools/qemu/qemu.inc |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc
index 6c44b31..6289bf2 100644
--- a/meta/recipes-devtools/qemu/qemu.inc
+++ b/meta/recipes-devtools/qemu/qemu.inc
@@ -38,6 +38,11 @@ EXTRA_OECONF_class-nativesdk = "--target-list=${@get_qemu_target_list(d)} --disa
 				--disable-curl \
 				"
 
+# Add an option `-march' to BUILD_CFLAGS, GCC 4.3.4 on x86 host needs this
+# option to let the atomic operations ("lock free") be available while it
+# is used to compile qemu-native
+BUILD_CFLAGS += "-march=${@'${BUILD_ARCH}'.replace('_','-')}"
+
 do_configure_prepend_class-native() {
 	# Undo the -lX11 added by linker-flags.patch, don't assume that host has libX11 installed
 	sed -i 's/-lX11//g' Makefile.target
-- 
1.7.10.4