[OE-core] [PATCH v3][master-next] kernel: use olddefconfig as the primary target for KERNEL_CONFIG_COMMAND

[Bruce Ashfield]

As was warned by commit 312ee68752fa [kconfig: announce removal of
oldnoconfig if used], oldnoconfig has been removed from the 4.20 kernel.

So we switch our default mode to olddefconfig.

commit fb16d8912 [kconfig: replace 'oldnoconfig' with 'olddefconfig',
and keep the old name as an alias] introduced olddefconfig in the 3.10
kernel, we shuffle oldnoconfig to the fallback target.

The fallback mode allows kernels between 3.10 and the currently listed
oldest kernel of 3.2 to continue to configure.

Signed-off-by: Bruce Ashfield <bruce.ashfield at windriver.com>
---

v3: dropped 'yes' from the pipeline

v2: Tweaked to add a fallback mode as suggested by Andre McCurdy

Not for the release, just wanted to get this in the queue for
when master reopens so we'll be ready for 4.20+ kernel versions

Tested by configuring linux-yocto*

Bruce


 meta/classes/kernel.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index e04d2fe00434..880c5ef17283 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -492,7 +492,7 @@ sysroot_stage_all () {
 	:
 }
 
-KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} CC="${KERNEL_CC}" O=${B} oldnoconfig"
+KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} CC="${KERNEL_CC}" O=${B} olddefconfig || oe_runmake -C ${S} O=${B} CC="${KERNEL_CC}" oldnoconfig"
 
 python check_oldest_kernel() {
     oldest_kernel = d.getVar('OLDEST_KERNEL')
-- 
2.5.0