Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:
"Kbuild changes for v3.16-rc1:
- cross-compilation fix so that cc-option is testing the right
compiler
- Fix for make defconfig all
- Using relative paths to the object and source directory where
possible, plus fixes for the fallout of the change
- several cleanups in the Makefiles and scripts
The powerpc fix is from today, because it was only discovered
recently. The rest has been in linux-next for some time"
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
powerpc: Avoid circular dependency with zImage.%
kbuild: create include/config directory in scripts/kconfig/Makefile
kbuild: do not create include/linux directory
Makefile: Fix unrecognized cross-compiler command line options
kbuild: do not add "selinux" to subdir- twice
um: Fix for relative objtree when generating x86 headers
kbuild: Use relative path when building in a subdir of the source tree
kbuild: Use relative path when building in the source tree
kbuild: Use relative path for $(objtree)
firmware: Use $(quote) in the Makefile
firmware: Simplify directory creation
kbuild: trivial - fix comment block indent
kbuild: trivial - remove trailing spaces
kbuild: support simultaneous "make %config" and "make all"
kbuild: move extra gcc checks to scripts/Makefile.extrawarn
This commit is contained in:
Linus Torvalds
Коммит
1700ff823b
49
Makefile
49
Makefile
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@ -105,10 +105,6 @@ ifeq ("$(origin O)", "command line")
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KBUILD_OUTPUT := $(O)
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endif
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ifeq ("$(origin W)", "command line")
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export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
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endif
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# That's our default target when none is given on the command line
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PHONY := _all
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_all:
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@ -153,8 +149,18 @@ else
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_all: modules
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endif
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srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
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objtree := $(CURDIR)
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ifeq ($(KBUILD_SRC),)
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# building in the source tree
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srctree := .
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else
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ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
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# building in a subdirectory of the source tree
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srctree := ..
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else
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srctree := $(KBUILD_SRC)
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endif
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endif
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objtree := .
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src := $(srctree)
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obj := $(objtree)
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@ -346,7 +352,6 @@ $(srctree)/scripts/Kbuild.include: ;
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include $(srctree)/scripts/Kbuild.include
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# Make variables (CC, etc...)
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AS = $(CROSS_COMPILE)as
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LD = $(CROSS_COMPILE)ld
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CC = $(CROSS_COMPILE)gcc
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@ -395,8 +400,8 @@ KBUILD_CPPFLAGS := -D__KERNEL__
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KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
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-fno-strict-aliasing -fno-common \
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-Werror-implicit-function-declaration \
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-Wno-format-security \
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$(call cc-option,-fno-delete-null-pointer-checks,)
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-Wno-format-security
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KBUILD_AFLAGS_KERNEL :=
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KBUILD_CFLAGS_KERNEL :=
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KBUILD_AFLAGS := -D__ASSEMBLY__
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@ -504,8 +509,16 @@ ifeq ($(mixed-targets),1)
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# We're called with mixed targets (*config and build targets).
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# Handle them one by one.
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%:: FORCE
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$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
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PHONY += $(MAKECMDGOALS) __build_one_by_one
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$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
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@:
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__build_one_by_one:
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$(Q)set -e; \
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for i in $(MAKECMDGOALS); do \
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$(MAKE) -f $(srctree)/Makefile $$i; \
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done
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else
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ifeq ($(config-targets),1)
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@ -520,11 +533,9 @@ include $(srctree)/arch/$(SRCARCH)/Makefile
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export KBUILD_DEFCONFIG KBUILD_KCONFIG
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config: scripts_basic outputmakefile FORCE
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$(Q)mkdir -p include/linux include/config
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$(Q)$(MAKE) $(build)=scripts/kconfig $@
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%config: scripts_basic outputmakefile FORCE
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$(Q)mkdir -p include/linux include/config
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$(Q)$(MAKE) $(build)=scripts/kconfig $@
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else
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@ -594,14 +605,16 @@ endif # $(dot-config)
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# Defaults to vmlinux, but the arch makefile usually adds further targets
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all: vmlinux
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include $(srctree)/arch/$(SRCARCH)/Makefile
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KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
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ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
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KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
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else
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KBUILD_CFLAGS += -O2
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endif
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include $(srctree)/arch/$(SRCARCH)/Makefile
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ifdef CONFIG_READABLE_ASM
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# Disable optimizations that make assembler listings hard to read.
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# reorder blocks reorders the control in the function
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@ -731,6 +744,8 @@ ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
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KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
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endif
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include $(srctree)/scripts/Makefile.extrawarn
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# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
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KBUILD_CPPFLAGS += $(KCPPFLAGS)
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KBUILD_AFLAGS += $(KAFLAGS)
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@ -1054,10 +1069,10 @@ _modinst_:
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@rm -rf $(MODLIB)/kernel
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@rm -f $(MODLIB)/source
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@mkdir -p $(MODLIB)/kernel
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@ln -s $(srctree) $(MODLIB)/source
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@ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
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@if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
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rm -f $(MODLIB)/build ; \
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ln -s $(objtree) $(MODLIB)/build ; \
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ln -s $(CURDIR) $(MODLIB)/build ; \
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fi
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@cp -f $(objtree)/modules.order $(MODLIB)/
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@cp -f $(objtree)/modules.builtin $(MODLIB)/
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|
|
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@ -333,8 +333,8 @@ $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
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$(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
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$(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz)
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$(obj)/zImage.%: vmlinux $(wrapperbits)
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$(call if_changed,wrap,$*)
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$(addprefix $(obj)/, $(sort $(filter zImage.%, $(image-y)))): vmlinux $(wrapperbits)
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$(call if_changed,wrap,$(subst $(obj)/zImage.,,$@))
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# dtbImage% - a dtbImage is a zImage with an embedded device tree blob
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$(obj)/dtbImage.initrd.%: vmlinux $(wrapperbits) $(obj)/%.dtb
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@ -111,8 +111,7 @@ endef
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KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig
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archheaders:
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$(Q)$(MAKE) -C '$(srctree)' KBUILD_SRC= \
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ARCH=$(HEADER_ARCH) O='$(objtree)' archheaders
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$(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders
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archprepare: include/generated/user_constants.h
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@ -4,10 +4,10 @@
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# Create $(fwabs) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a
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# leading /, it's relative to $(srctree).
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fwdir := $(subst ",,$(CONFIG_EXTRA_FIRMWARE_DIR))
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fwdir := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE_DIR))
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fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir))
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fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE))
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fw-external-y := $(subst $(quote),,$(CONFIG_EXTRA_FIRMWARE))
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# There are three cases to care about:
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# 1. Building kernel with CONFIG_FIRMWARE_IN_KERNEL=y -- $(fw-shipped-y) should
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@ -138,12 +138,6 @@ fw-shipped-$(CONFIG_YAM) += yam/1200.bin yam/9600.bin
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fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-)
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# Directories which we _might_ need to create, so we have a rule for them.
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firmware-dirs := $(sort $(addprefix $(objtree)/$(obj)/,$(dir $(fw-external-y) $(fw-shipped-all))))
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quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@)
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cmd_mkdir = mkdir -p $@
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quiet_cmd_ihex = IHEX $@
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cmd_ihex = $(OBJCOPY) -Iihex -Obinary $< $@
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@ -184,21 +178,10 @@ wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \
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include/config/superh32.h include/config/superh64.h \
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include/config/x86_32.h include/config/x86_64.h)
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# Workaround for make < 3.81, where .SECONDEXPANSION doesn't work.
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# It'll end up depending on these targets, so make them a PHONY rule which
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# depends on _all_ the directories in $(firmware-dirs), and it'll work out OK.
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PHONY += $(objtree)/$$(%) $(objtree)/$(obj)/$$(%)
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$(objtree)/$$(%) $(objtree)/$(obj)/$$(%): $(firmware-dirs)
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@true
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# For the $$(dir %) trick, where we need % to be expanded first.
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.SECONDEXPANSION:
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$(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps) \
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| $(objtree)/$$(dir %)
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$(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps)
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$(call cmd,fwbin,$(patsubst %.gen.S,%,$@))
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$(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \
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include/config/extra/firmware/dir.h | $(objtree)/$$(dir %)
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include/config/extra/firmware/dir.h
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$(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@))
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# The .o files depend on the binaries directly; the .S files don't.
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@ -207,7 +190,7 @@ $(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/%
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# .ihex is used just as a simple way to hold binary files in a source tree
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# where binaries are frowned upon. They are directly converted with objcopy.
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$(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %)
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$(obj)/%: $(obj)/%.ihex
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$(call cmd,ihex)
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# Don't depend on ihex2fw if we're installing and it already exists.
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@ -226,16 +209,13 @@ endif
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# is actually meaningful, because the firmware has to be loaded in a certain
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# order rather than as a single binary blob. Thus, we convert them into our
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# more compact binary representation of ihex records (<linux/ihex.h>)
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$(obj)/%.fw: $(obj)/%.HEX $(ihex2fw_dep) | $(objtree)/$(obj)/$$(dir %)
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$(obj)/%.fw: $(obj)/%.HEX $(ihex2fw_dep)
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$(call cmd,ihex2fw)
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# .H16 is our own modified form of Intel HEX, with 16-bit length for records.
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$(obj)/%.fw: $(obj)/%.H16 $(ihex2fw_dep) | $(objtree)/$(obj)/$$(dir %)
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$(obj)/%.fw: $(obj)/%.H16 $(ihex2fw_dep)
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$(call cmd,h16tofw)
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$(firmware-dirs):
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$(call cmd,mkdir)
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obj-y += $(patsubst %,%.gen.o, $(fw-external-y))
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obj-$(CONFIG_FIRMWARE_IN_KERNEL) += $(patsubst %,%.gen.o, $(fw-shipped-y))
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|
|
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@ -39,4 +39,4 @@ subdir-$(CONFIG_SECURITY_SELINUX) += selinux
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subdir-$(CONFIG_DTC) += dtc
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# Let clean descend into subdirs
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subdir- += basic kconfig package selinux
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subdir- += basic kconfig package
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|
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|
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@ -50,67 +50,6 @@ ifeq ($(KBUILD_NOPEDANTIC),)
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endif
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endif
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#
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# make W=... settings
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#
|
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# W=1 - warnings that may be relevant and does not occur too often
|
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# W=2 - warnings that occur quite often but may still be relevant
|
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# W=3 - the more obscure warnings, can most likely be ignored
|
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#
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# $(call cc-option, -W...) handles gcc -W.. options which
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# are not supported by all versions of the compiler
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ifdef KBUILD_ENABLE_EXTRA_GCC_CHECKS
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warning- := $(empty)
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|
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warning-1 := -Wextra -Wunused -Wno-unused-parameter
|
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warning-1 += -Wmissing-declarations
|
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warning-1 += -Wmissing-format-attribute
|
||||
warning-1 += $(call cc-option, -Wmissing-prototypes)
|
||||
warning-1 += -Wold-style-definition
|
||||
warning-1 += $(call cc-option, -Wmissing-include-dirs)
|
||||
warning-1 += $(call cc-option, -Wunused-but-set-variable)
|
||||
warning-1 += $(call cc-disable-warning, missing-field-initializers)
|
||||
|
||||
# Clang
|
||||
warning-1 += $(call cc-disable-warning, initializer-overrides)
|
||||
warning-1 += $(call cc-disable-warning, unused-value)
|
||||
warning-1 += $(call cc-disable-warning, format)
|
||||
warning-1 += $(call cc-disable-warning, unknown-warning-option)
|
||||
warning-1 += $(call cc-disable-warning, sign-compare)
|
||||
warning-1 += $(call cc-disable-warning, format-zero-length)
|
||||
warning-1 += $(call cc-disable-warning, uninitialized)
|
||||
warning-1 += $(call cc-option, -fcatch-undefined-behavior)
|
||||
|
||||
warning-2 := -Waggregate-return
|
||||
warning-2 += -Wcast-align
|
||||
warning-2 += -Wdisabled-optimization
|
||||
warning-2 += -Wnested-externs
|
||||
warning-2 += -Wshadow
|
||||
warning-2 += $(call cc-option, -Wlogical-op)
|
||||
warning-2 += $(call cc-option, -Wmissing-field-initializers)
|
||||
|
||||
warning-3 := -Wbad-function-cast
|
||||
warning-3 += -Wcast-qual
|
||||
warning-3 += -Wconversion
|
||||
warning-3 += -Wpacked
|
||||
warning-3 += -Wpadded
|
||||
warning-3 += -Wpointer-arith
|
||||
warning-3 += -Wredundant-decls
|
||||
warning-3 += -Wswitch-default
|
||||
warning-3 += $(call cc-option, -Wpacked-bitfield-compat)
|
||||
warning-3 += $(call cc-option, -Wvla)
|
||||
|
||||
warning := $(warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
||||
warning += $(warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
||||
warning += $(warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
||||
|
||||
ifeq ("$(strip $(warning))","")
|
||||
$(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown)
|
||||
endif
|
||||
|
||||
KBUILD_CFLAGS += $(warning)
|
||||
endif
|
||||
|
||||
include scripts/Makefile.lib
|
||||
|
||||
ifdef host-progs
|
||||
|
|
|
|||
|
|
@ -0,0 +1,67 @@
|
|||
# ==========================================================================
|
||||
#
|
||||
# make W=... settings
|
||||
#
|
||||
# W=1 - warnings that may be relevant and does not occur too often
|
||||
# W=2 - warnings that occur quite often but may still be relevant
|
||||
# W=3 - the more obscure warnings, can most likely be ignored
|
||||
#
|
||||
# $(call cc-option, -W...) handles gcc -W.. options which
|
||||
# are not supported by all versions of the compiler
|
||||
# ==========================================================================
|
||||
|
||||
ifeq ("$(origin W)", "command line")
|
||||
export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
|
||||
endif
|
||||
|
||||
ifdef KBUILD_ENABLE_EXTRA_GCC_CHECKS
|
||||
warning- := $(empty)
|
||||
|
||||
warning-1 := -Wextra -Wunused -Wno-unused-parameter
|
||||
warning-1 += -Wmissing-declarations
|
||||
warning-1 += -Wmissing-format-attribute
|
||||
warning-1 += $(call cc-option, -Wmissing-prototypes)
|
||||
warning-1 += -Wold-style-definition
|
||||
warning-1 += $(call cc-option, -Wmissing-include-dirs)
|
||||
warning-1 += $(call cc-option, -Wunused-but-set-variable)
|
||||
warning-1 += $(call cc-disable-warning, missing-field-initializers)
|
||||
|
||||
# Clang
|
||||
warning-1 += $(call cc-disable-warning, initializer-overrides)
|
||||
warning-1 += $(call cc-disable-warning, unused-value)
|
||||
warning-1 += $(call cc-disable-warning, format)
|
||||
warning-1 += $(call cc-disable-warning, unknown-warning-option)
|
||||
warning-1 += $(call cc-disable-warning, sign-compare)
|
||||
warning-1 += $(call cc-disable-warning, format-zero-length)
|
||||
warning-1 += $(call cc-disable-warning, uninitialized)
|
||||
warning-1 += $(call cc-option, -fcatch-undefined-behavior)
|
||||
|
||||
warning-2 := -Waggregate-return
|
||||
warning-2 += -Wcast-align
|
||||
warning-2 += -Wdisabled-optimization
|
||||
warning-2 += -Wnested-externs
|
||||
warning-2 += -Wshadow
|
||||
warning-2 += $(call cc-option, -Wlogical-op)
|
||||
warning-2 += $(call cc-option, -Wmissing-field-initializers)
|
||||
|
||||
warning-3 := -Wbad-function-cast
|
||||
warning-3 += -Wcast-qual
|
||||
warning-3 += -Wconversion
|
||||
warning-3 += -Wpacked
|
||||
warning-3 += -Wpadded
|
||||
warning-3 += -Wpointer-arith
|
||||
warning-3 += -Wredundant-decls
|
||||
warning-3 += -Wswitch-default
|
||||
warning-3 += $(call cc-option, -Wpacked-bitfield-compat)
|
||||
warning-3 += $(call cc-option, -Wvla)
|
||||
|
||||
warning := $(warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
||||
warning += $(warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
||||
warning += $(warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
||||
|
||||
ifeq ("$(strip $(warning))","")
|
||||
$(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown)
|
||||
endif
|
||||
|
||||
KBUILD_CFLAGS += $(warning)
|
||||
endif
|
||||
|
|
@ -24,25 +24,23 @@ ifndef CONFIG_FIRMWARE_IN_KERNEL
|
|||
mod-fw += $(fw-shipped-y)
|
||||
endif
|
||||
|
||||
ifneq ($(KBUILD_SRC),)
|
||||
# Create output directory if not already present
|
||||
_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
|
||||
|
||||
firmware-dirs := $(sort $(addprefix $(objtree)/$(obj)/,$(dir $(fw-external-y) $(fw-shipped-all))))
|
||||
# Create directories for firmware in subdirectories
|
||||
_dummy := $(foreach d,$(firmware-dirs), $(shell [ -d $(d) ] || mkdir -p $(d)))
|
||||
endif
|
||||
|
||||
installed-mod-fw := $(addprefix $(INSTALL_FW_PATH)/,$(mod-fw))
|
||||
|
||||
installed-fw := $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-all))
|
||||
installed-fw-dirs := $(sort $(dir $(installed-fw))) $(INSTALL_FW_PATH)/./
|
||||
|
||||
# Workaround for make < 3.81, where .SECONDEXPANSION doesn't work.
|
||||
PHONY += $(INSTALL_FW_PATH)/$$(%) install-all-dirs
|
||||
$(INSTALL_FW_PATH)/$$(%): install-all-dirs
|
||||
@true
|
||||
install-all-dirs: $(installed-fw-dirs)
|
||||
@true
|
||||
|
||||
quiet_cmd_install = INSTALL $(subst $(srctree)/,,$@)
|
||||
cmd_install = $(INSTALL) -m0644 $< $@
|
||||
cmd_install = mkdir -p $(@D); $(INSTALL) -m0644 $< $@
|
||||
|
||||
$(installed-fw-dirs):
|
||||
$(call cmd,mkdir)
|
||||
|
||||
$(installed-fw): $(INSTALL_FW_PATH)/%: $(obj)/% | $(INSTALL_FW_PATH)/$$(dir %)
|
||||
$(installed-fw): $(INSTALL_FW_PATH)/%: $(obj)/%
|
||||
$(call cmd,install)
|
||||
|
||||
PHONY += __fw_install __fw_modinst FORCE
|
||||
|
|
|
|||
|
|
@ -33,11 +33,11 @@ oldconfig: $(obj)/conf
|
|||
$< --$@ $(Kconfig)
|
||||
|
||||
silentoldconfig: $(obj)/conf
|
||||
$(Q)mkdir -p include/generated
|
||||
$(Q)mkdir -p include/config include/generated
|
||||
$< --$@ $(Kconfig)
|
||||
|
||||
localyesconfig localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
|
||||
$(Q)mkdir -p include/generated
|
||||
$(Q)mkdir -p include/config include/generated
|
||||
$(Q)perl $< --$@ $(srctree) $(Kconfig) > .tmp.config
|
||||
$(Q)if [ -f .config ]; then \
|
||||
cmp -s .tmp.config .config || \
|
||||
|
|
|
|||
|
|
@ -42,18 +42,11 @@ MAKEARGS += O=\$(if \$(patsubst /%,,\$(makedir)),\$(CURDIR)/)\$(patsubst %/,%,\$
|
|||
|
||||
MAKEFLAGS += --no-print-directory
|
||||
|
||||
.PHONY: all \$(MAKECMDGOALS)
|
||||
.PHONY: __sub-make \$(MAKECMDGOALS)
|
||||
|
||||
all := \$(filter-out all Makefile,\$(MAKECMDGOALS))
|
||||
__sub-make:
|
||||
\$(Q)\$(MAKE) \$(MAKEARGS) \$(MAKECMDGOALS)
|
||||
|
||||
all:
|
||||
\$(Q)\$(MAKE) \$(MAKEARGS) \$(all)
|
||||
|
||||
Makefile:;
|
||||
|
||||
\$(all): all
|
||||
@:
|
||||
|
||||
%/: all
|
||||
\$(filter-out __sub-make, \$(MAKECMDGOALS)): __sub-make
|
||||
@:
|
||||
EOF
|
||||
|
|
|
|||
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Ссылка в новой задаче