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Commit 96faec94 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next 

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (25 commits)
  allow stripping of generated symbols under CONFIG_KALLSYMS_ALL
  kbuild: strip generated symbols from *.ko
  kbuild: simplify use of genksyms
  kernel-doc: check for extra kernel-doc notations
  kbuild: add headerdep used to detect inclusion cycles in header files
  kbuild: fix string equality testing in tags.sh
  kbuild: fix make tags/cscope
  kbuild: fix make incompatibility
  kbuild: remove TAR_IGNORE
  setlocalversion: add git-svn support
  setlocalversion: print correct subversion revision
  scripts: improve the decodecode script
  scripts/package: allow custom options to rpm
  genksyms: allow to ignore symbol checksum changes
  genksyms: track symbol checksum changes
  tags and cscope support really belongs in a shell script
  kconfig: fix options to check-lxdialog.sh
  kbuild: gen_init_cpio expands shell variables in file names
  remove bashisms from scripts/extract-ikconfig
  kbuild: teach mkmakfile to be silent
  ...
parents 29263285 9bb48247

Documentation/kbuild/makefiles.txt

+14 −0
Original line number Diff line number Diff line
@@ -383,6 +383,20 @@ more details, with real examples. 
	to prerequisites are referenced with $(src) (because they are not

	generated files).



    $(kecho)

	echoing information to user in a rule is often a good practice

	but when execution "make -s" one does not expect to see any output

	except for warnings/errors.

	To support this kbuild define $(kecho) which will echo out the

	text following $(kecho) to stdout except if "make -s" is used.



	Example:

		#arch/blackfin/boot/Makefile

		$(obj)/vmImage: $(obj)/vmlinux.gz

			$(call if_changed,uimage)

			@$(kecho) 'Kernel: $@ is ready'





--- 3.11 $(CC) support functions



	The kernel may be built with several different versions of

Makefile

+66 −141
Original line number Diff line number Diff line
@@ -336,7 +336,7 @@ LINUXINCLUDE := -Iinclude \ 
                   -I$(srctree)/arch/$(hdr-arch)/include               \

                   -include include/linux/autoconf.h



KBUILD_CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)

KBUILD_CPPFLAGS := -D__KERNEL__



KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \

		   -fno-strict-aliasing -fno-common \
@@ -439,7 +439,11 @@ ifeq ($(config-targets),1) 
include $(srctree)/arch/$(SRCARCH)/Makefile

export KBUILD_DEFCONFIG KBUILD_KCONFIG



config %config: scripts_basic outputmakefile FORCE

config: scripts_basic outputmakefile FORCE

	$(Q)mkdir -p include/linux include/config

	$(Q)$(MAKE) $(build)=scripts/kconfig $@



%config: scripts_basic outputmakefile FORCE

	$(Q)mkdir -p include/linux include/config

	$(Q)$(MAKE) $(build)=scripts/kconfig $@
@@ -600,20 +604,25 @@ export INSTALL_PATH ?= /boot 
MODLIB	= $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)

export MODLIB



#

#  INSTALL_MOD_STRIP, if defined, will cause modules to be

#  stripped after they are installed.  If INSTALL_MOD_STRIP is '1', then

#  the default option --strip-debug will be used.  Otherwise,

#  INSTALL_MOD_STRIP will used as the options to the strip command.

strip-symbols := $(srctree)/scripts/strip-symbols \

		 $(wildcard $(srctree)/arch/$(ARCH)/scripts/strip-symbols)



#

# INSTALL_MOD_STRIP, if defined, will cause modules to be stripped while

# they get installed.  If INSTALL_MOD_STRIP is '1', then the default

# options (see below) will be used.  Otherwise, INSTALL_MOD_STRIP will

# be used as the option(s) to the objcopy command.

ifdef INSTALL_MOD_STRIP

ifeq ($(INSTALL_MOD_STRIP),1)

mod_strip_cmd = $(STRIP) --strip-debug

mod_strip_cmd = $(OBJCOPY) --strip-debug

ifeq ($(CONFIG_KALLSYMS_ALL),$(CONFIG_KALLSYMS_STRIP_GENERATED))

mod_strip_cmd += --wildcard $(addprefix --strip-symbols ,$(strip-symbols))

endif

else

mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)

mod_strip_cmd = $(OBJCOPY) $(INSTALL_MOD_STRIP)

endif # INSTALL_MOD_STRIP=1

else

mod_strip_cmd = true

mod_strip_cmd = false

endif # INSTALL_MOD_STRIP

export mod_strip_cmd
@@ -743,6 +752,7 @@ last_kallsyms := 2 
endif



kallsyms.o := .tmp_kallsyms$(last_kallsyms).o

kallsyms.h := $(wildcard include/config/kallsyms/*.h) $(wildcard include/config/kallsyms/*/*.h)



define verify_kallsyms

	$(Q)$(if $($(quiet)cmd_sysmap),                                      \
@@ -767,24 +777,41 @@ endef 


# Generate .S file with all kernel symbols

quiet_cmd_kallsyms = KSYM    $@

      cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \

                     $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@

      cmd_kallsyms = { test $* -eq 0 || $(NM) -n $<; } \

		     | $(KALLSYMS) $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) >$@



.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE

quiet_cmd_kstrip = STRIP   $@

      cmd_kstrip = $(OBJCOPY) --wildcard $(addprefix --strip$(if $(CONFIG_RELOCATABLE),-unneeded)-symbols ,$(filter %/scripts/strip-symbols,$^)) $< $@



$(foreach n,0 1 2 3,.tmp_kallsyms$(n).o): KBUILD_AFLAGS += -Wa,--strip-local-absolute

$(foreach n,0 1 2 3,.tmp_kallsyms$(n).o): %.o: %.S scripts FORCE

	$(call if_changed_dep,as_o_S)



.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)

ifeq ($(CONFIG_KALLSYMS_STRIP_GENERATED),y)

strip-ext := .stripped

endif



.tmp_kallsyms%.S: .tmp_vmlinux%$(strip-ext) $(KALLSYMS) $(kallsyms.h)

	$(call cmd,kallsyms)



# make -jN seems to have problems with intermediate files, see bug #3330.

.SECONDARY: $(foreach n,1 2 3,.tmp_vmlinux$(n).stripped)

.tmp_vmlinux%.stripped: .tmp_vmlinux% $(strip-symbols) $(kallsyms.h)

	$(call cmd,kstrip)



ifneq ($(CONFIG_DEBUG_INFO),y)

.tmp_vmlinux%: LDFLAGS_vmlinux += -S

endif

# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version

.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE

	$(call if_changed_rule,ksym_ld)

.tmp_vmlinux%: $(vmlinux-lds) $(vmlinux-all) FORCE

	$(if $(filter 1,$*),$(call if_changed_rule,ksym_ld),$(call if_changed,vmlinux__))



.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE

	$(call if_changed,vmlinux__)

.tmp_vmlinux0$(strip-ext):

	$(Q)echo "placeholder" >$@



.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE

	$(call if_changed,vmlinux__)

.tmp_vmlinux1: .tmp_kallsyms0.o

.tmp_vmlinux2: .tmp_kallsyms1.o

.tmp_vmlinux3: .tmp_kallsyms2.o



# Needs to visit scripts/ before $(KALLSYMS) can be used.

$(KALLSYMS): scripts ;
@@ -926,7 +953,7 @@ PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 
# 2) Create the include2 directory, used for the second asm symlink

prepare3: include/config/kernel.release

ifneq ($(KBUILD_SRC),)

	@echo '  Using $(srctree) as source for kernel'

	@$(kecho) '  Using $(srctree) as source for kernel'

	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \

		echo "  $(srctree) is not clean, please run 'make mrproper'";\

		echo "  in the '$(srctree)' directory.";\
@@ -983,7 +1010,7 @@ endef 
# directory for generated filesas used by some architectures.

define create-symlink

	if [ ! -L include/asm ]; then                                      \

			echo '  SYMLINK $@ -> include/asm-$(SRCARCH)';     \

			$(kecho) '  SYMLINK $@ -> include/asm-$(SRCARCH)'; \

			if [ ! -d include/asm-$(SRCARCH) ]; then           \

				mkdir -p include/asm-$(SRCARCH);           \

			fi;                                                \
@@ -1022,6 +1049,10 @@ include/linux/version.h: $(srctree)/Makefile FORCE 
include/linux/utsrelease.h: include/config/kernel.release FORCE

	$(call filechk,utsrelease.h)



PHONY += headerdep

headerdep:

	$(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl



# ---------------------------------------------------------------------------



PHONY += depend dep
@@ -1096,7 +1127,7 @@ all: modules 
PHONY += modules

modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)

	$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order

	@echo '  Building modules, stage 2.';

	@$(kecho) '  Building modules, stage 2.';

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
@@ -1270,7 +1301,8 @@ help: 
	@echo  '  versioncheck    - Sanity check on version.h usage'

	@echo  '  includecheck    - Check for duplicate included header files'

	@echo  '  export_report   - List the usages of all exported symbols'

	@echo  '  headers_check   - Sanity check on exported headers'; \

	@echo  '  headers_check   - Sanity check on exported headers'

	@echo  '  headerdep       - Detect inclusion cycles in headers'; \

	 echo  ''

	@echo  'Kernel packaging:'

	@$(MAKE) $(build)=$(package-dir) help
@@ -1360,7 +1392,7 @@ $(module-dirs): crmodverdir $(objtree)/Module.symvers 
	$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)



modules: $(module-dirs)

	@echo '  Building modules, stage 2.';

	@$(kecho) '  Building modules, stage 2.';

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost



PHONY += modules_install
@@ -1409,123 +1441,12 @@ endif # KBUILD_EXTMOD 


# Generate tags for editors

# ---------------------------------------------------------------------------

quiet_cmd_tags = GEN     $@

      cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@



#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set

#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.

#Adding $(srctree) adds about 20M on i386 to the size of the output file!



ifeq ($(src),$(obj))

__srctree =

else

__srctree = $(srctree)/

endif



ifeq ($(ALLSOURCE_ARCHS),)

ifeq ($(ARCH),um)

ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)

else

ALLINCLUDE_ARCHS := $(SRCARCH)

endif

else

#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.

ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)

endif



ALLSOURCE_ARCHS := $(SRCARCH)



define find-sources

        ( for arch in $(ALLSOURCE_ARCHS) ; do \

	       find $(__srctree)arch/$${arch} $(RCS_FIND_IGNORE) \

		    -wholename $(__srctree)arch/$${arch}/include/asm -type d -prune \

	            -o -name $1 -print; \

	  done ; \

	  find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \

	       -name $1 -print; \

	  find $(__srctree)include $(RCS_FIND_IGNORE) \

	       \( -name config -o -name 'asm-*' \) -prune \

	       -o -name $1 -print; \

	  for arch in $(ALLINCLUDE_ARCHS) ; do \

	       test -e $(__srctree)include/asm-$${arch} && \

                 find $(__srctree)include/asm-$${arch} $(RCS_FIND_IGNORE) \

	            -name $1 -print; \

	       test -e $(__srctree)arch/$${arch}/include/asm && \

	         find $(__srctree)arch/$${arch}/include/asm $(RCS_FIND_IGNORE) \

	            -name $1 -print; \

	  done ; \

	  find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \

	       -name $1 -print; \

	  find $(__srctree) $(RCS_FIND_IGNORE) \

	       \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \

	       -name $1 -print; \

	  )

endef



define all-sources

	$(call find-sources,'*.[chS]')

endef

define all-kconfigs

	$(call find-sources,'Kconfig*')

endef

define all-defconfigs

	$(call find-sources,'defconfig')

endef



define xtags

	if $1 --version 2>&1 | grep -iq exuberant; then \

	    $(all-sources) | xargs $1 -a \

		-I __initdata,__exitdata,__acquires,__releases \

		-I __read_mostly,____cacheline_aligned,____cacheline_aligned_in_smp,____cacheline_internodealigned_in_smp \

		-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \

		--extra=+f --c-kinds=+px \

		--regex-asm='/^ENTRY\(([^)]*)\).*/\1/'; \

	    $(all-kconfigs) | xargs $1 -a \

		--langdef=kconfig \

		--language-force=kconfig \

		--regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/\2/'; \

	    $(all-defconfigs) | xargs -r $1 -a \

		--langdef=dotconfig \

		--language-force=dotconfig \

		--regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \

	elif $1 --version 2>&1 | grep -iq emacs; then \

	    $(all-sources) | xargs $1 -a; \

	    $(all-kconfigs) | xargs $1 -a \

		--regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/\3/'; \

	    $(all-defconfigs) | xargs -r $1 -a \

		--regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \

	else \

	    $(all-sources) | xargs $1 -a; \

	fi

endef



quiet_cmd_cscope-file = FILELST cscope.files

      cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files



quiet_cmd_cscope = MAKE    cscope.out

      cmd_cscope = cscope -b -f cscope.out



cscope: FORCE

	$(call cmd,cscope-file)

	$(call cmd,cscope)



quiet_cmd_TAGS = MAKE   $@

define cmd_TAGS

	rm -f $@; \

	$(call xtags,etags)

endef



TAGS: FORCE

	$(call cmd,TAGS)



quiet_cmd_tags = MAKE   $@

define cmd_tags

	rm -f $@; \

	$(call xtags,ctags)

endef



tags: FORCE

tags TAGS cscope: FORCE

	$(call cmd,tags)





# Scripts to check various things for consistency

# ---------------------------------------------------------------------------
@@ -1604,7 +1525,11 @@ endif 
	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)



# Modules

/ %/: prepare scripts FORCE

/: prepare scripts FORCE

	$(cmd_crmodverdir)

	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \

	$(build)=$(build-dir)

%/: prepare scripts FORCE

	$(cmd_crmodverdir)

	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \

	$(build)=$(build-dir)
@@ -1638,7 +1563,7 @@ cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 
                  $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)



a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \

	  $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \

	  $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \

	  $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)



quiet_cmd_as_o_S = AS      $@

arch/blackfin/boot/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ $(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE 


$(obj)/vmImage: $(obj)/vmlinux.gz

	$(call if_changed,uimage)

	@echo 'Kernel: $@ is ready'

	@$(kecho) 'Kernel: $@ is ready'



install:

	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"

arch/x86/scripts/strip-symbols

0 → 100644
+1 −0
Original line number Diff line number Diff line 
__cpu_vendor_dev_X86_VENDOR_*

init/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -588,6 +588,13 @@ config KALLSYMS_ALL 


	   Say N.



config KALLSYMS_STRIP_GENERATED

	bool "Strip machine generated symbols from kallsyms"

	depends on KALLSYMS_ALL

	default y

	help

	  Say N if you want kallsyms to retain even machine generated symbols.



config KALLSYMS_EXTRA_PASS

	bool "Do an extra kallsyms pass"

	depends on KALLSYMS