In the upstream commit 214c0eea43b2ea66bcd6467ea57e47ce8874191b
("kbuild: add $(objtree)/ prefix to some in-kernel build artifacts")
artifacts required for building out-of-tree kernel modules had
$(objtree) prepended to them to prepare for building in other
directories.
When building external modules for powerpc,
arch/powerpc/lib/crtsavres.o is required for certain
configurations. This artifact is missing the prepended $(objtree).
Fixes: 13b25489b6f8 ("kbuild: change working directory to external module
directory with M=")
Acked-by: Masahiro Yamada <masahi...@kernel.org>
Reviewed-by: Nicolas Schier <n.sch...@avm.de>
Tested-by: Nicolas Schier <n.sch...@avm.de>
Signed-off-by: Kienan Stewart <kstew...@efficios.com>
---
Changes in v2:
- Added Review-by/Tested-by/Fixes/Acked-By
- Removed mention of possible work-around for external modules (while
the build will pass, `make modules_install` will fail)
- Link to v1:
https://lore.kernel.org/r/20250127-buildfix-extmod-powerpc-v1-1-450012b16...@efficios.com
---
arch/powerpc/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index
f3804103c56ccfdb16289468397ccaea71bf721e..9933b98df69d7f7b9aaf33d36155cc61ab4460c7
100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -58,7 +58,7 @@ ifeq ($(CONFIG_PPC64)$(CONFIG_LD_IS_BFD),yy)
# There is a corresponding test in arch/powerpc/lib/Makefile
KBUILD_LDFLAGS_MODULE += --save-restore-funcs
else
-KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
+KBUILD_LDFLAGS_MODULE += $(objtree)/arch/powerpc/lib/crtsavres.o
endif
ifdef CONFIG_CPU_LITTLE_ENDIAN
---
base-commit: ffd294d346d185b70e28b1a28abe367bbfe53c04
change-id: 20250127-buildfix-extmod-powerpc-a744e1331f83
Best regards,
--
Kienan Stewart <kstew...@efficios.com>
