[OE-core] [PATCH] systemd: disable problematic GCC 5.2 optimizations

[Jonathan Liu]

This fixes systemd failing to start on Raspberry Pi 2 if it is compiled
with GCC 5.2.

It would try to start "Journal Service" and "udev Kernel Device Manager"
but fail repeatedly.

[YOCTO #8291]

Signed-off-by: Jonathan Liu <net147 at gmail.com>
---
 meta/recipes-core/systemd/systemd_225.bb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/meta/recipes-core/systemd/systemd_225.bb b/meta/recipes-core/systemd/systemd_225.bb
index f7d4c7d..4a19ff4 100644
--- a/meta/recipes-core/systemd/systemd_225.bb
+++ b/meta/recipes-core/systemd/systemd_225.bb
@@ -123,6 +123,9 @@ EXTRA_OECONF = " --with-rootprefix=${rootprefix} \
 # uclibc does not have NSS
 EXTRA_OECONF_append_libc-uclibc = " --disable-myhostname "
 
+# disable problematic GCC 5.2 optimizations [YOCTO #8291]
+FULL_OPTIMIZATION += "-fno-schedule-insns -fno-schedule-insns2"
+
 do_configure_prepend() {
 	export NM="${HOST_PREFIX}gcc-nm"
 	export AR="${HOST_PREFIX}gcc-ar"
-- 
2.5.0