Commit 93fdddfe authored by Masahiro Yamada's avatar Masahiro Yamada
Browse files

kbuild: add this-makefile as a shorthand for $(lastword $(MAKEFILE_LIST))



Make it clearer, and self-documenting.

Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
parent 827365ff
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+4 −2
Original line number Diff line number Diff line
@@ -157,12 +157,14 @@ MAKEFLAGS += --include-dir=$(abs_srctree)
need-sub-make := 1
endif

this-makefile := $(lastword $(MAKEFILE_LIST))

ifneq ($(filter 3.%,$(MAKE_VERSION)),)
# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x
# We need to invoke sub-make to avoid implicit rules in the top Makefile.
need-sub-make := 1
# Cancel implicit rules for this Makefile.
$(lastword $(MAKEFILE_LIST)): ;
$(this-makefile): ;
endif

export abs_srctree abs_objtree
@@ -172,7 +174,7 @@ ifeq ($(need-sub-make),1)

PHONY += $(MAKECMDGOALS) sub-make

$(filter-out _all sub-make $(lastword $(MAKEFILE_LIST)), $(MAKECMDGOALS)) _all: sub-make
$(filter-out _all sub-make $(this-makefile), $(MAKECMDGOALS)) _all: sub-make
	@:

# Invoke a second make in the output directory, passing relevant variables