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kbuild: prefix $(srctree)/ to some included Makefiles

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VPATH is used in Kbuild to make pattern rules search for prerequisites
in both $(objtree) and $(srctree). Some of *.c, *.S files are not real
sources, but generated by tools such as flex, bison, perl.

In contrast, I doubt the benefit of --include-dir=$(abs_srctree) because
it is always clear which Makefiles are real sources, and which are not.

So, my hope is to add $(srctree)/ prefix to all check-in Makefiles,
then remove --include-dir=$(abs_srctree) flag in the future.

I am touching only some Kbuild core parts for now. Treewide fixes will
be needed to achieve this goal.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada
2021-02-28 15:10:26 +09:00
parent 1e28eed176
commit 3204a7fb98
9 changed files with 17 additions and 17 deletions
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2
scripts/Makefile.headersinst
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@@ -12,7 +12,7 @@
PHONY := __headers
__headers:
include scripts/Kbuild.include
include $(srctree)/scripts/Kbuild.include
src := $(srctree)/$(obj)
gen := $(objtree)/$(subst include/,include/generated/,$(obj))