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kbuild: Use Kbuild.include

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This commit adjusts some files to use Kbuild.include.

 - Use cc-option defined in Kbuild.include
    (Delete cc-option in config.mk)
 - Use cc-version defined in
    (Delete cc-version in config.mk)
 - Move binutils-version and dtc-version to Kbuild.include
     by analogy to cc-version

This commit also adds srctree (same as SRCTREE)
to use Kbuild scripts.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit is contained in:
Masahiro Yamada 2014-02-04 17:24:18 +09:00 committed by Tom Rini
parent ceec4c8746
commit bf4b3de101
5 changed files with 16 additions and 35 deletions
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9
Makefile
View file

@ -102,9 +102,10 @@ OBJTREE := $(if $(BUILD_DIR),$(BUILD_DIR),$(CURDIR))
SPLTREE := $(OBJTREE)/spl
TPLTREE := $(OBJTREE)/tpl
SRCTREE := $(CURDIR)
srctree := $(SRCTREE)
TOPDIR := $(SRCTREE)
LNDIR := $(OBJTREE)
export TOPDIR SRCTREE OBJTREE SPLTREE TPLTREE
export TOPDIR SRCTREE srctree OBJTREE SPLTREE TPLTREE
MKCONFIG := $(SRCTREE)/mkconfig
export MKCONFIG
@ -126,8 +127,6 @@ unexport CDPATH
#########################################################################
build := -f $(TOPDIR)/scripts/Makefile.build -C
# The "tools" are needed early, so put this first
# Don't include stuff already done in $(LIBS)
# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
@ -198,6 +197,10 @@ HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
endif
# We need some generic definitions (do not try to remake the file).
$(srctree)/scripts/Kbuild.include: ;
include $(srctree)/scripts/Kbuild.include
# Make variables (CC, etc...)
AS = $(CROSS_COMPILE)as

29
config.mk
View file

@ -47,35 +47,6 @@ PLATFORM_RELFLAGS =
PLATFORM_CPPFLAGS =
PLATFORM_LDFLAGS =
#########################################################################
#
# Option checker, gcc version (courtesy linux kernel) to ensure
# only supported compiler options are used
#
CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk
CC_TEST_OFILE := $(OBJTREE)/include/generated/cc_test_file.o
-include $(CC_OPTIONS_CACHE_FILE)
cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \
if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \
> /dev/null 2>&1; then \
echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \
echo "$(1)"; fi)
ifeq ($(CONFIG_CC_OPT_CACHE_DISABLE),y)
cc-option = $(strip $(if $(call cc-option-sys,$1),$1,$2))
else
cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\
$(if $(call cc-option-sys,$1),$1,$2)))
endif
# cc-version
# Usage gcc-ver := $(call cc-version)
cc-version = $(shell $(CONFIG_SHELL) $(SRCTREE)/scripts/gcc-version.sh $(CC))
binutils-version = $(shell $(CONFIG_SHELL) $(SRCTREE)/scripts/binutils-version.sh $(AS))
dtc-version = $(shell $(CONFIG_SHELL) $(SRCTREE)/scripts/dtc-version.sh $(DTC))
#########################################################################
# Load generated board configuration

8
scripts/Kbuild.include
View file

@ -140,6 +140,10 @@ cc-fullversion = $(shell $(CONFIG_SHELL) \
# Usage: EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)
cc-ifversion = $(shell [ $(call cc-version, $(CC)) $(1) $(2) ] && echo $(3))
# added for U-Boot
binutils-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/binutils-version.sh $(AS))
dtc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/dtc-version.sh $(DTC))
# cc-ldoption
# Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)
cc-ldoption = $(call try-run,\
@ -161,7 +165,9 @@ ar-option = $(call try-run, $(AR) rc$(1) "$$TMP",$(1),$(2))
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
# Usage:
# $(Q)$(MAKE) $(build)=dir
build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
#build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
# temporary
build := -f $(srctree)/scripts/Makefile.build -C
###
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.modbuiltin obj=

1
scripts/Makefile.build
View file

@ -2,6 +2,7 @@
.PHONY: all
all:
include $(srctree)/scripts/Kbuild.include
include $(TOPDIR)/config.mk
# variable LIB is used in examples/standalone/Makefile

4
spl/Makefile
View file

@ -14,6 +14,8 @@
# Based on top-level Makefile.
#
include $(srctree)/scripts/Kbuild.include
CONFIG_SPL_BUILD := y
export CONFIG_SPL_BUILD
@ -127,8 +129,6 @@ ifeq ($(wildcard $(LDSCRIPT)),)
$(error could not find linker script)
endif
build := -f $(TOPDIR)/scripts/Makefile.build -C
# Special flags for CPP when processing the linker script.
# Pass the version down so we can handle backwards compatibility
# on the fly.