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kbuild: build all prerequisites of headers_install simultaneously

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Currently, scripts/unifdef is compiled after scripts_basic,
uapi-asm-generic, archheaders, and archscripts.

The proper dependency is just scripts_basic. There is no problem
to compile scripts/unifdef and other headers at the same time.

Split scripts_unifdef out in order to allow more parallel building.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2019-06-04 19:14:01 +09:00
parent 2b8481be3c
commit bdd7714b6f
1 changed files with 5 additions and 2 deletions
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7
Makefile
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@ -1181,8 +1181,7 @@ export INSTALL_HDR_PATH = $(objtree)/usr
PHONY += archheaders archscripts
PHONY += __headers
__headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts
$(Q)$(MAKE) $(build)=scripts scripts/unifdef
__headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts
PHONY += headers_install
headers_install: __headers
@ -1204,6 +1203,10 @@ ifdef CONFIG_HEADERS_CHECK
all: headers_check
endif
PHONY += scripts_unifdef
scripts_unifdef: scripts_basic
$(Q)$(MAKE) $(build)=scripts scripts/unifdef
# ---------------------------------------------------------------------------
# Kernel selftest