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kbuild: fix false-positive need-builtin calculation

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[ Upstream commit d9f78edfd81b9e484423534360350ef7253cc888 ]

The current implementation of need-builtin is false-positive,
for example, in the following Makefile:

  obj-m := foo/
  obj-y := foo/bar/

..., where foo/built-in.a is not required.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Stable-dep-of: 2e3d0e20d845 ("ARM: dts: exynos: correct TMU phandle in Odroid HC1")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Masahiro Yamada 2019-08-06 19:03:21 +09:00 committed by Greg Kroah-Hartman
parent 1dc71eeb19
commit a4912c4b0b
1 changed files with 2 additions and 1 deletions
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3
scripts/Makefile.build
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@ -541,7 +541,8 @@ targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
PHONY += $(subdir-ym)
$(subdir-ym):
$(Q)$(MAKE) $(build)=$@ need-builtin=$(if $(findstring $@,$(subdir-obj-y)),1)
$(Q)$(MAKE) $(build)=$@ \
need-builtin=$(if $(filter $@/built-in.a, $(subdir-obj-y)),1)
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------