[OE-core] [PATCH V2 1/1] image.bbclass: fix systemd_preset_all

[Chen Qi]

Check the existence of systemd before using systemctl to preset units.
This is because even if 'systemd' is in DISTRO_FEATURES, it's possible
that systemd is not even installed. e.g. container-test-image in
meta-selftest layer.

As systemd DEPENDS on systemd-systemctl-native, the existence of systemd
also ensures the existence of systemd-systemctl-native.

This would fix the following test case when using systemd as the init
manager.

  containerimage.ContainerImageTests.test_expected_files

Also remove the IMAGE_EXTRADEPENDS setting, as nothing references this
variable.

Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
---
 meta/classes/image.bbclass | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index d2b2fb9..7daa97e 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -666,10 +666,11 @@ reproducible_final_image_task () {
 }
 
 systemd_preset_all () {
-    systemctl --root="${IMAGE_ROOTFS}" --preset-mode=enable-only preset-all
+    if [ -e ${IMAGE_ROOTFS}${root_prefix}/lib/systemd/systemd ]; then
+	systemctl --root="${IMAGE_ROOTFS}" --preset-mode=enable-only preset-all
+    fi
 }
 
-IMAGE_EXTRADEPENDS += "${@ 'systemd-systemctl-native' if bb.utils.contains('DISTRO_FEATURES', 'systemd', True, False, d) and not bb.utils.contains('IMAGE_FEATURES', 'stateless-rootfs', True, False, d) else ''}"
 IMAGE_PREPROCESS_COMMAND_append = " ${@ 'systemd_preset_all;' if bb.utils.contains('DISTRO_FEATURES', 'systemd', True, False, d) and not bb.utils.contains('IMAGE_FEATURES', 'stateless-rootfs', True, False, d) else ''} reproducible_final_image_task; "
 
 CVE_PRODUCT = ""
-- 
1.9.1