[PATCH v3] qemuboot.bbclass: add missing task dependency on kernel deploy

[Siva Balasubramanian <sivakumar.bs@gmail.com>]

do_write_qemuboot_conf had no dependency on the kernel deploy task,
so if the kernel was rebuilt without invalidating the rootfs sstate,
the task was skipped and .qemuboot.conf was left stale while new
image artifacts were deployed with a new timestamp suffix.

Add do_write_qemuboot_conf[depends] on KERNEL_DEPLOY_DEPEND using a
Python expression to guard against the empty case, since baremetal
images (which inherit qemuboot via baremetal-image.bbclass) do not
set KERNEL_DEPLOY_DEPEND.

KERNEL_DEPLOY_DEPEND is defined with ?= in image.bbclass and is
already used by do_build[depends] for the same reason.

Fixes: https://bugzilla.yoctoproject.org/show_bug.cgi?id=14520
Signed-off-by: Siva Balasubramanian <sivakumar.bs@gmail.com>
---
 meta/classes-recipe/qemuboot.bbclass | 1 +
 1 file changed, 1 insertion(+)

diff --git a/meta/classes-recipe/qemuboot.bbclass b/meta/classes-recipe/qemuboot.bbclass
index 56106b1958..639d4bfd9c 100644
--- a/meta/classes-recipe/qemuboot.bbclass
+++ b/meta/classes-recipe/qemuboot.bbclass
@@ -128,6 +128,7 @@ inherit image-artifact-names
 
 # Create qemuboot.conf
 addtask do_write_qemuboot_conf after do_rootfs before do_image
+do_write_qemuboot_conf[depends] += "${@d.getVar('KERNEL_DEPLOY_DEPEND') or ''}"
 
 def qemuboot_vars(d):
     build_vars = ['MACHINE', 'TUNE_ARCH', 'DEPLOY_DIR_IMAGE',
-- 
2.34.1