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[RFC,v2,1/5] kernel.bbclass: Copy include/config/auto.conf in STAGING_KERNEL_BUILDDIR

Message ID 20251204113058.948115-2-yoann.congal@smile.fr
State New
Headers show
Series Kernel Rust out-of-tree module support | expand

Commit Message

Yoann Congal Dec. 4, 2025, 11:30 a.m. UTC 
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>
---
 meta/classes-recipe/kernel.bbclass | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/meta/classes-recipe/kernel.bbclass b/meta/classes-recipe/kernel.bbclass
index 003a155e794..32d8fc78686 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