libvirt: Workaround mips assembler crash on target

While enabling multilib on qemumips64, lib32 assembler ends up
crashing on target sometimes due to branch out of range,
therefore using -O2 for now

[snip]
|../../libvirt-6.1.0/tests/qemuxml2argvtest.c: In function 'mymain':
|../../libvirt-6.1.0/tests/qemuxml2argvtest.c:608:1: note: variable
tracking size limit exceeded with '-fvar-tracking-assignments', retrying without
|  608 | mymain(void)
|      | ^~~~~~
|/tmp/ccXJSwZR.s: Assembler messages:
|/tmp/ccXJSwZR.s:43943: Error: branch out of range
[snip]

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/recipes-extended/libvirt/libvirt_6.1.0.bb b/recipes-extended/libvirt/libvirt_6.1.0.bb
index 15f33aad..7b109204 100644
--- a/recipes-extended/libvirt/libvirt_6.1.0.bb
+++ b/recipes-extended/libvirt/libvirt_6.1.0.bb
@@ -375,6 +375,11 @@ EXTRA_OECONF += " \
     --with-test-suite \
     "
 
+# gcc9 end up mis-compiling qemuxml2argvtest.o with Og which then
+# crashes on target, so remove -Og and use -O2 as workaround
+SELECTED_OPTIMIZATION_remove_virtclass-multilib-lib32_mipsarch = "-Og"
+SELECTED_OPTIMIZATION_append_virtclass-multilib-lib32_mipsarch = " -O2"
+
 EXTRA_OEMAKE = "BUILD_DIR=${B} DEST_DIR=${D}${PTEST_PATH} PTEST_DIR=${PTEST_PATH} SYSTEMD_UNIT_DIR=${systemd_system_unitdir}"
 
 PRIVATE_LIBS_${PN}-ptest_append = "libvirt-admin.so.0"