xen: fix build with _FORTIFY_SOURCE, gcc 8.2 and glibc 2.28

Apply upstream-reviewed patch to fix compilation.
Patch reorders header includes to issue a pragma to disable SSE before
including any potentially always_inline functions that would use SSE.

Also modify the recipe to supply compiler flags via the tools variables where
they will get used, necessary as _FORTIFY_SOURCE requires optimization flags to
be supplied.

Signed-off-by: Christopher Clark <christopher.clark6@baesystems.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/recipes-extended/xen/xen.inc b/recipes-extended/xen/xen.inc
index bf4b3c28..365f71d9 100644
--- a/recipes-extended/xen/xen.inc
+++ b/recipes-extended/xen/xen.inc
@@ -842,6 +842,12 @@ export LDFLAGS=""
 # patching the build to be ok with this
 TUNE_CCARGS := "${@oe.utils.str_filter_out('-mfpmath=sse', '${TUNE_CCARGS}', d)}"
 
+# Supply the full set of compiler flags via the tool variables
+# Yocto supplys _FORTIFY_SOURCE via CC/CPP/CXX but optimization -O via C*FLAGS
+CC_append = " ${CFLAGS}"
+CPP_append = " ${CPPFLAGS}"
+CXX_append = " ${CXXFLAGS}"
+
 EXTRA_OECONF += " \
     --exec-prefix=/usr \
     --prefix=/usr \