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| author | Cao jin <caoj.fnst@cn.fujitsu.com> | 2017-06-30 10:45:43 +0800 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-07-03 08:03:10 +0900 |
| commit | c4e6fff1ae5729c2af159008b13fca39fbbac70e (patch) | |
| tree | 9211990b482146ec41338f2a2f9848ba1ca28f5d /Makefile | |
| parent | d77698df39a512911586834d303275ea5fda74d0 (diff) | |
| download | linux-c4e6fff1ae5729c2af159008b13fca39fbbac70e.tar.gz | |
kbuild: improve comments on KBUILD_SRC
Original comments is confusing on "OBJ directory", make it clear.
Bonus: move comments close to what it wants to comment.
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -106,8 +106,8 @@ export quiet Q KBUILD_VERBOSE # The O= assignment takes precedence over the KBUILD_OUTPUT environment # variable. -# KBUILD_SRC is set on invocation of make in OBJ directory -# KBUILD_SRC is not intended to be used by the regular user (for now) +# KBUILD_SRC is not intended to be used by the regular user (for now), +# it is set on invocation of make with KBUILD_OUTPUT or O= specified. ifeq ($(KBUILD_SRC),) # OK, Make called in directory where kernel src resides @@ -128,7 +128,6 @@ ifneq ($(words $(subst :, ,$(CURDIR))), 1) endif ifneq ($(KBUILD_OUTPUT),) -# Invoke a second make in the output directory, passing relevant variables # check that the output directory actually exists saved-output := $(KBUILD_OUTPUT) KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ @@ -141,6 +140,7 @@ PHONY += $(MAKECMDGOALS) sub-make $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make @: +# Invoke a second make in the output directory, passing relevant variables sub-make: $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) |