[OE-core] [OE-Core][PATCH 04/13] qemuwrapper: Explicitly exit in case of no qemu supported for target

[Serhey Popovych]

Running qemu for userspace code on unsupported target binaries might
be bad idea because qemu could say running in endless loop instead
of crashing due to illegal instruction or unsupported binary format.

While this is qemu bug we should avoid hitting it by explicitly exiting
from the wrapper when qemu backfill considered for machine.

Behaviour was observed in do_rootfs stage when building on IBM Power 8
host for PowerPC e7400 target.

Signed-off-by: Serhey Popovych <serhe.popovych at gmail.com>
---
 meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb b/meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb
index 4aada52..06f1561 100644
--- a/meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb
+++ b/meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb
@@ -21,7 +21,8 @@ do_install () {
 set -x
 
 if [ ${@bb.utils.contains('MACHINE_FEATURES', 'qemu-usermode', 'True', 'False', d)} = False ]; then
-        echo "qemuwrapper: qemu usermode is not supported"
+	echo "qemuwrapper: qemu usermode is not supported"
+	exit 1
 fi
 
 
-- 
2.7.4