On Thu, 2018-12-06 at 05:10:28 UTC, Michael Ellerman wrote: > In commit 5e9dcb6188a4 ("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: 5e9dcb6188a4 ("powerpc/boot: Expose Kconfig symbols to wrapper") > Tested-by: Daniel Axtens <d...@axtens.net> > Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
Applied to powerpc fixes. https://git.kernel.org/powerpc/c/e41b93a6be57e26a4a123345f826a6 cheers