[PATCH 2/4 v3] security_flags.inc: disable -fstack-protector-XXX for valgrind

[Andre McCurdy <armccurdy@gmail.com>]

Valgrind (v3.11.0) expects to build with stack protection disabled
and includes -fno-stack-protector in its default CFLAGS. However, the
CFLAGS provided by OE are included on the compiler command line after
the defaults so any -fstack-protector-all / -fstack-protector-strong
option provided by security_flags.inc will cause problems.

 | .../build-bcm97425vms/tmp/work/mips32el-rdk-linux/valgrind/3.11.0-r0/valgrind-3.11.0/coregrind/m_mallocfree.c:892: undefined reference to `__stack_chk_guard'
 | .../build-bcm97425vms/tmp/work/mips32el-rdk-linux/valgrind/3.11.0-r0/valgrind-3.11.0/coregrind/m_mallocfree.c:947: undefined reference to `__stack_chk_fail'

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
---
 meta/conf/distro/include/security_flags.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/conf/distro/include/security_flags.inc b/meta/conf/distro/include/security_flags.inc
index 14ac0bf..1795750 100644
--- a/meta/conf/distro/include/security_flags.inc
+++ b/meta/conf/distro/include/security_flags.inc
@@ -84,7 +84,7 @@ SECURITY_CFLAGS_pn-python-numpy = "${SECURITY_NO_PIE_CFLAGS}"
 SECURITY_CFLAGS_pn-python3 = "${SECURITY_NO_PIE_CFLAGS}"
 SECURITY_CFLAGS_pn-tcl = "${SECURITY_NO_PIE_CFLAGS}"
 SECURITY_CFLAGS_pn-tiff = "${SECURITY_NO_PIE_CFLAGS}"
-SECURITY_CFLAGS_pn-valgrind = "${SECURITY_NO_PIE_CFLAGS}"
+SECURITY_CFLAGS_pn-valgrind = ""
 SECURITY_CFLAGS_pn-zlib = "${SECURITY_NO_PIE_CFLAGS}"
 
 # These 2 have text relco errors with the pie options enabled
-- 
1.9.1