ltp: set -fomit-frame-pointer explicitly for x86-64

Since ltp contains x86-64 assembler which uses the
frame-pointer register, it will trigger below error
when build ltp with -fno-omit-frame-pointer on
x86-64.
| cve-2015-3290.c: In function 'child_thread':
| cve-2015-3290.c:416:1: error: bp cannot be used in asm here

And there is also some comment as below in the source
file ltp/20180515-r0/git/testcases/cve/cve-2015-3290.c
* Build with -O2.  Don't use -fno-omit-frame-pointer.

So explicitly set -fomit-frame-pointer on x86-64 for
compiler to fix the above build error.

(From OE-Core rev: 3084ff86d61b54011e0647ee17cbba521bafc9df)

Signed-off-by: Mingli Yu <Mingli.Yu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/meta/recipes-extended/ltp/ltp_20180515.bb b/meta/recipes-extended/ltp/ltp_20180515.bb
index b07c1b9268..21ff49830a 100644
--- a/meta/recipes-extended/ltp/ltp_20180515.bb
+++ b/meta/recipes-extended/ltp/ltp_20180515.bb
@@ -19,6 +19,13 @@ LIC_FILES_CHKSUM = "\
 DEPENDS = "attr libaio libcap acl openssl zip-native"
 DEPENDS_append_libc-musl = " fts "
 EXTRA_OEMAKE_append_libc-musl = " LIBC=musl "
+
+# since ltp contains x86-64 assembler which uses the frame-pointer register,
+# set -fomit-frame-pointer x86-64 to handle cases where optimisation
+# is set to -O0 or frame pointers have been enabled by -fno-omit-frame-pointer
+# earlier in CFLAGS, etc.
+CFLAGS_append_x86-64 = " -fomit-frame-pointer"
+
 CFLAGS_append_powerpc64 = " -D__SANE_USERSPACE_TYPES__"
 CFLAGS_append_mipsarchn64 = " -D__SANE_USERSPACE_TYPES__"
 SRCREV = "96cbf48313afa65ef4d693d3441cbfd60a8d9b27"