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kbuild: replace KBUILD_SRCTREE with boolean building_out_of_srctree 

Commit 25b146c5b8 ("kbuild: allow Kbuild to start from any directory")
deprecated KBUILD_SRCTREE.

It is only used in tools/testing/selftest/ to distinguish out-of-tree
build. Replace it with a new boolean flag, building_out_of_srctree.

I also replaced the conditional ($(srctree),.) because the next commit
will allow an absolute path to be used for $(srctree) even when building
in the source tree.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2019-07-06 12:07:12 +09:00
parent 75dd47472b
commit 051f278e9d
8 changed files with 16 additions and 19 deletions
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19
Makefile
View File

@ -228,9 +228,12 @@ ifeq ("$(origin M)", "command line")
KBUILD_EXTMOD := $(M)
endif
export KBUILD_CHECKSRC KBUILD_EXTMOD
ifeq ($(abs_srctree),$(abs_objtree))
# building in the source tree
srctree := .
building_out_of_srctree :=
else
ifeq ($(abs_srctree)/,$(dir $(abs_objtree)))
# building in a subdirectory of the source tree
@ -238,19 +241,13 @@ else
else
srctree := $(abs_srctree)
endif
# TODO:
# KBUILD_SRC is only used to distinguish in-tree/out-of-tree build.
# Replace it with $(srctree) or something.
KBUILD_SRC := $(abs_srctree)
building_out_of_srctree := 1
endif
export KBUILD_CHECKSRC KBUILD_EXTMOD KBUILD_SRC
objtree := .
VPATH := $(srctree)
export srctree objtree VPATH
export building_out_of_srctree srctree objtree VPATH
# To make sure we do not include .config for any of the *config targets
# catch them early, and hand them over to scripts/kconfig/Makefile
@ -453,7 +450,7 @@ USERINCLUDE := \
LINUXINCLUDE := \
-I$(srctree)/arch/$(SRCARCH)/include \
-I$(objtree)/arch/$(SRCARCH)/include/generated \
$(if $(filter .,$(srctree)),,-I$(srctree)/include) \
$(if $(building_out_of_srctree),-I$(srctree)/include) \
-I$(objtree)/include \
$(USERINCLUDE)
@ -514,7 +511,7 @@ PHONY += outputmakefile
# At the same time when output Makefile generated, generate .gitignore to
# ignore whole output directory
outputmakefile:
ifneq ($(srctree),.)
ifdef building_out_of_srctree
$(Q)ln -fsn $(srctree) source
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
$(Q)test -e .gitignore || \
@ -1101,7 +1098,7 @@ PHONY += prepare archprepare prepare1 prepare3
# and if so do:
# 1) Check that make has not been executed in the kernel src $(srctree)
prepare3: include/config/kernel.release
ifneq ($(srctree),.)
ifdef building_out_of_srctree
@$(kecho) ' Using $(srctree) as source for kernel'
$(Q)if [ -f $(srctree)/.config -o \
-d $(srctree)/include/config -o \

2
scripts/Makefile.build
View File

@ -513,7 +513,7 @@ existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
ifneq ($(srctree),.)
ifdef building_out_of_srctree
# Create directories for object files if they do not exist
obj-dirs := $(sort $(obj) $(patsubst %/,%, $(dir $(targets))))
# If targets exist, their directories apparently exist. Skip mkdir.

2
scripts/Makefile.host
View File

@ -69,7 +69,7 @@ _hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
# $(objtree)/$(obj) for including generated headers from checkin source files
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(srctree),.)
ifdef building_out_of_srctree
_hostc_flags += -I $(objtree)/$(obj)
_hostcxx_flags += -I $(objtree)/$(obj)
endif

2
scripts/Makefile.lib
View File

@ -154,7 +154,7 @@ endif
# $(srctree)/$(src) for including checkin headers from generated source files
# $(objtree)/$(obj) for including generated headers from checkin source files
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(srctree),.)
ifdef building_out_of_srctree
_c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
_a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
_cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)

2
scripts/Makefile.modbuiltin
View File

@ -15,7 +15,7 @@ include include/config/tristate.conf
include scripts/Kbuild.include
ifneq ($(srctree),.)
ifdef building_out_of_srctree
# Create output directory if not already present
_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
endif

2
scripts/gdb/linux/Makefile
View File

@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
ifneq ($(srctree),.)
ifdef building_out_of_srctree
symlinks := $(patsubst $(srctree)/$(src)/%,%,$(wildcard $(srctree)/$(src)/*.py))

2
tools/testing/selftests/Makefile
View File

@ -74,7 +74,7 @@ endif
# Append kselftest to KBUILD_OUTPUT to avoid cluttering
# KBUILD_OUTPUT with selftest objects and headers installed
# by selftests Makefile or lib.mk.
ifneq ($(KBUILD_SRC),)
ifdef building_out_of_srctree
override LDFLAGS =
endif

4
tools/testing/selftests/lib.mk
View File

@ -70,7 +70,7 @@ define RUN_TESTS
endef
run_tests: all
ifneq ($(KBUILD_SRC),)
ifdef building_out_of_srctree
@if [ "X$(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES)" != "X" ]; then
@rsync -aq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT)
fi
@ -125,7 +125,7 @@ clean:
# When make O= with kselftest target from main level
# the following aren't defined.
#
ifneq ($(KBUILD_SRC),)
ifdef building_out_of_srctree
LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)