[PATCH v5 10/15] kernel.bbclass: Copy include/config/auto.conf in STAGING_KERNEL_BUILDDIR

Harish.Sadineni
2026-01-29T16:39:50Z

From: Yoann Congal <yoann.congal@smile.fr>

Linux commit aaed5c7739be ("kbuild: slim down package for building
external modules")[0] states that include/config/auto.conf is also a
file needed for out-of-tree build.

This avoids this error when building an out-of-tree Rust kernel module:
| make -C .../tmp/work-shared/qemux86-64/kernel-source M=$PWD
| make[1]: Entering directory '.../tmp/work-shared/qemux86-64/kernel-source'
| make[2]: Entering directory '.../tmp/work/qemux86_64-poky-linux/rust-out-of-tree-module/git/sources/rust-out-of-tree-module-git'
| .../tmp/work-shared/qemux86-64/kernel-source/Makefile:779: .../tmp/work-shared/qemux86-64/kernel-build-artifacts/include/config/auto.conf: No such file or directory

[0]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=aaed5c7739be81ebdd6008aedc8befd98c88e67a

Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
---
meta/classes-recipe/kernel.bbclass | 1 +
1 file changed, 1 insertion(+)

diff --git a/meta/classes-recipe/kernel.bbclass b/meta/classes-recipe/kernel.bbclass
index f989b31c47..30a10b0801 100644
--- a/meta/classes-recipe/kernel.bbclass
+++ b/meta/classes-recipe/kernel.bbclass
@@ -570,6 +570,7 @@ do_shared_workdir () {
cp .config $kerneldir/
mkdir -p $kerneldir/include/config
cp include/config/kernel.release $kerneldir/include/config/kernel.release
+ cp include/config/auto.conf $kerneldir/include/config/auto.conf
if [ -e certs/signing_key.x509 ]; then
# The signing_key.* files are stored in the certs/ dir in
# newer Linux kernels
--
2.49.0