[PATCH] scripts/Makefile.autoconf: use abs_srctree for out-of-tree symlink

[David Lechner]

Replace usage of $(srctree) with $(abs_srctree) when creating a symlink
to include/asm/arch in out of tree builds.

When building_out_of_srctree is true, $(srctree) is just "..", so the
created symlink was broken, for example:

    build-mt8365_evk/include/asm/arch -> ../arch/arm/include/asm/arch-mediatek

Which would resolve to a non-existent path:

    build-mt8365_evk/include/asm/arch/arm/include/asm/arch-mediatek

To fix, we need to use the absolute path to the source tree since we
don't know where the build tree is located relative to the source tree.

Fixes: bd3f9ee679b4 ("kbuild: Bump the build system to 6.1")
Signed-off-by: David Lechner <dlechner at baylibre.com>
---
 scripts/Makefile.autoconf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.autoconf b/scripts/Makefile.autoconf
index e3c88badb52..47c49a018bf 100644
--- a/scripts/Makefile.autoconf
+++ b/scripts/Makefile.autoconf
@@ -138,7 +138,7 @@ ifdef building_out_of_srctree
 	else									\
 		dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU));	\
 	fi;									\
-	ln -fsn $(srctree)/$$dest include/asm/arch
+	ln -fsn $(abs_srctree)/$$dest include/asm/arch
 else
 	$(Q)if [ -d arch/$(ARCH)/mach-$(SOC)/include/mach ]; then	\
 		dest=../../mach-$(SOC)/include/mach;			\

---
base-commit: 6cdd7597a2fbfc1572c1b0af23d3daf1cefa2de7
change-id: 20260105-mtk-fix-build-after-kconfig-change-922538479a96

Best regards,
-- 
David Lechner <dlechner at baylibre.com>