Commit 1cacc9ab authored by Committed by Sam Ravnborg
kbuild: fix building with redirected output.
Jan Altenberg <firstname.lastname@example.org> reported that building with redirected input like this failed: make O=dir oldconfig bzImage < /dev/null The problem were caused by a make silentoldconfig being run before oldconfig and with a non-recent .config the build failed because silentoldconfig requires non-redirected stdin. Silentoldconfig was run as a side-effect of having the top-level Makefile re-made by make. Introducing an empty rule for the top-level Makefile (and Kbuild.include) fixed the issue. Signed-off-by: Sam Ravnborg <email@example.com>
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