powerpc/boot: Fix build failures with -j 1
In commit 5e9dcb61 ("powerpc/boot: Expose Kconfig symbols to wrapper") we added a dependency to serial.c on autoconf.h: $(obj)/serial.c: $(obj)/autoconf.h This works when building in-tree (ie. with KBUILD_OUTPUT unset) because the obj tree is the src tree. But when building with eg. O=build and -j 1 the build fails: gcc ... -I../arch/powerpc/boot -c -o arch/powerpc/boot/serial.o arch/powerpc/boot/serial.c gcc: error: arch/powerpc/boot/serial.c: No such file or directory Why this is only happening with -j 1 is not clear, when building with -j greater than 1 somehow we decide to look for serial.c in the src tree (../), eg: gcc -I../arch/powerpc/boot -c -o arch/powerpc/boot/serial.o ../arch/powerpc/boot/serial.c Regardless we shouldn't be specifying a dependency on serial.c in the build tree, we want to add a dependency to the version in $(srctree) so fix the rule to say that. Fixes: 5e9dcb61 ("powerpc/boot: Expose Kconfig symbols to wrapper") Tested-by:Daniel Axtens <dja@axtens.net> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au>
parent
bf3d6afb
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