VERSION = 2
PATCHLEVEL = 6
-SUBLEVEL = 20
-EXTRAVERSION =-rc6
-NAME = Homicidal Dwarf Hamster
+SUBLEVEL = 23
+EXTRAVERSION =
+NAME = Arr Matey! A Hairy Bilge Rat!
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
$(if $(KBUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
+# Check that OUTPUT directory is not the same as where we have kernel src
+$(if $(filter-out $(KBUILD_OUTPUT),$(shell /bin/pwd)),, \
+ $(error Output directory (O=...) specifies kernel src dir))
-PHONY += $(MAKECMDGOALS)
+PHONY += $(MAKECMDGOALS) sub-make
-$(filter-out _all,$(MAKECMDGOALS)) _all:
+$(filter-out _all sub-make,$(MAKECMDGOALS)) _all: sub-make
+ $(Q)@:
+
+sub-make: FORCE
$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
KBUILD_SRC=$(CURDIR) \
- KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
+ KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
+ $(filter-out _all sub-make,$(MAKECMDGOALS))
# Leave processing to above invocation of make
skip-makefile := 1
CROSS_COMPILE ?=
# Architecture as present in compile.h
-UTS_MACHINE := $(ARCH)
+UTS_MACHINE := $(ARCH)
+SRCARCH := $(ARCH)
KCONFIG_CONFIG ?= .config
MODFLAGS = -DMODULE
CFLAGS_MODULE = $(MODFLAGS)
AFLAGS_MODULE = $(MODFLAGS)
-LDFLAGS_MODULE = -r
+LDFLAGS_MODULE =
CFLAGS_KERNEL =
AFLAGS_KERNEL =
$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
-include include/linux/autoconf.h
-CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
+KBUILD_CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
-CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
- -fno-strict-aliasing -fno-common
-AFLAGS := -D__ASSEMBLY__
+KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
+ -fno-strict-aliasing -fno-common \
+ -Werror-implicit-function-declaration
+KBUILD_AFLAGS := -D__ASSEMBLY__
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
-export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
+export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
-export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
-export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
-export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
+export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
+export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
+export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
# When compiling out-of-tree modules, put MODVERDIR in the module
# tree rather than in the kernel tree. The kernel tree might
all: vmlinux
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
-CFLAGS += -Os
+KBUILD_CFLAGS += -Os
else
-CFLAGS += -O2
+KBUILD_CFLAGS += -O2
endif
include $(srctree)/arch/$(ARCH)/Makefile
ifdef CONFIG_FRAME_POINTER
-CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
+KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
else
-CFLAGS += -fomit-frame-pointer
+KBUILD_CFLAGS += -fomit-frame-pointer
endif
ifdef CONFIG_DEBUG_INFO
-CFLAGS += -g
+KBUILD_CFLAGS += -g
+KBUILD_AFLAGS += -gdwarf-2
endif
# Force gcc to behave correct even for buggy distributions
-CFLAGS += $(call cc-option, -fno-stack-protector)
+KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
CHECKFLAGS += $(NOSTDINC_FLAGS)
# warn about C99 declaration after statement
-CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
# disable pointer signed / unsigned warnings in gcc 4.0
-CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+
+# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
+KBUILD_CPPFLAGS += $(CPPFLAGS)
+KBUILD_AFLAGS += $(AFLAGS)
+KBUILD_CFLAGS += $(CFLAGS)
+
+# Use --build-id when available.
+LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
+ $(call ld-option, -Wl$(comma)--build-id,))
+LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
+LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
# Default kernel image to build when no specific target is given.
# KBUILD_IMAGE may be overruled on the command line or
# ---------------------------------------------------------------------------
# vmlinux is built from the objects selected by $(vmlinux-init) and
# $(vmlinux-main). Most are built-in.o files from top-level directories
-# in the kernel tree, others are specified in arch/$(ARCH)Makefile.
+# in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
# Ordering when linking is important, and $(vmlinux-init) must be first.
#
# vmlinux
vmlinux-init := $(head-y) $(init-y)
vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
vmlinux-all := $(vmlinux-init) $(vmlinux-main)
-vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
+vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds
+export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
# Rule to link vmlinux - also used during CONFIG_KALLSYMS
# May be overridden by arch/$(ARCH)/Makefile
cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
-T $(vmlinux-lds) $(vmlinux-init) \
--start-group $(vmlinux-main) --end-group \
- $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
+ $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
# Generate new vmlinux version
quiet_cmd_vmlinux_version = GEN .version
endif # ifdef CONFIG_KALLSYMS
+# Do modpost on a prelinked vmlinux. The finally linked vmlinux has
+# relevant sections renamed as per the linker script.
+quiet_cmd_vmlinux-modpost = LD $@
+ cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
+ $(vmlinux-init) --start-group $(vmlinux-main) --end-group \
+ $(filter-out $(vmlinux-init) $(vmlinux-main) $(vmlinux-lds) FORCE ,$^)
+define rule_vmlinux-modpost
+ :
+ +$(call cmd,vmlinux-modpost)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
+ $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
+endef
+
# vmlinux image - including updated kernel symbols
-vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
+vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) vmlinux.o FORCE
ifdef CONFIG_HEADERS_CHECK
$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
endif
+ $(call vmlinux-modpost)
$(call if_changed_rule,vmlinux__)
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
$(Q)rm -f .old_version
+vmlinux.o: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
+ $(call if_changed_rule,vmlinux-modpost)
+
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
# $(EXTRAVERSION) eg, -rc6
# $(localver-full)
# $(localver)
-# localversion* (all localversion* files)
+# localversion* (files without backups, containing '~')
# $(CONFIG_LOCALVERSION) (from kernel config setting)
# $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
# ./scripts/setlocalversion (SCM tag, if one exists)
# moment, only git is supported but other SCMs can edit the script
# scripts/setlocalversion and add the appropriate checks as needed.
-nullstring :=
-space := $(nullstring) # end of line
+pattern = ".*/localversion[^~]*"
+string = $(shell cat /dev/null \
+ `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`)
-___localver = $(objtree)/localversion* $(srctree)/localversion*
-__localver = $(sort $(wildcard $(___localver)))
-# skip backup files (containing '~')
-_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
-
-localver = $(subst $(space),, \
- $(shell cat /dev/null $(_localver)) \
- $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
+localver = $(subst $(space),, $(string) \
+ $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
# If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
# and if the SCM is know a tag from the SCM is appended.
# Listed in dependency order
PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
-# prepare-all is deprecated, use prepare as valid replacement
-PHONY += prepare-all
-
# prepare3 is used to check if we are building in a separate output directory,
# and if so do:
# 1) Check that make has not been executed in the kernel src $(srctree)
/bin/false; \
fi;
$(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
- $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
+ $(Q)ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm
endif
# prepare2 creates a makefile if using a separate output directory
prepare0: archprepare FORCE
$(Q)$(MAKE) $(build)=.
+ $(Q)$(MAKE) $(build)=. missing-syscalls
# All the preparing..
-prepare prepare-all: prepare0
+prepare: prepare0
# Leave this as default for preprocessing vmlinux.lds.S, which is now
# done in arch/$(ARCH)/kernel/Makefile
# before switching between archs anyway.
include/asm:
- @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
+ @echo ' SYMLINK $@ -> include/asm-$(SRCARCH)'
$(Q)if [ ! -d include ]; then mkdir -p include; fi;
- @ln -fsn asm-$(ARCH) $@
+ @ln -fsn asm-$(SRCARCH) $@
# Generate some files
# ---------------------------------------------------------------------------
INSTALL_HDR_PATH=$(objtree)/usr
export INSTALL_HDR_PATH
-HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
+HDRFILTER=generic i386 x86_64
+HDRARCHES=$(filter-out $(HDRFILTER),$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
PHONY += headers_install_all
headers_install_all: include/linux/version.h scripts_basic FORCE
PHONY += headers_install
headers_install: include/linux/version.h scripts_basic FORCE
- @if [ ! -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \
- echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \
+ @if [ ! -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \
+ echo '*** Error: Headers not exportable for this architecture ($(SRCARCH))'; \
exit 1 ; fi
$(Q)$(MAKE) $(build)=scripts scripts/unifdef
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst ARCH=$(SRCARCH) obj=include
+
+PHONY += headers_check_all
+headers_check_all: headers_install_all
+ $(Q)for arch in $(HDRARCHES); do \
+ $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch HDRCHECK=1 ;\
+ done
PHONY += headers_check
headers_check: headers_install
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst ARCH=$(SRCARCH) obj=include HDRCHECK=1
# ---------------------------------------------------------------------------
# Modules
@echo ' cscope - Generate cscope index'
@echo ' kernelrelease - Output the release version string'
@echo ' kernelversion - Output the version stored in Makefile'
- @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+ @if [ -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \
echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
+ echo ' (default: $(INSTALL_HDR_PATH))'; \
fi
- @echo ' (default: $(INSTALL_HDR_PATH))'
@echo ''
@echo 'Static analysers'
@echo ' checkstack - Generate a list of stack hogs'
@echo ' namespacecheck - Name space analysis on compiled kernel'
- @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+ @echo ' export_report - List the usages of all exported symbols'
+ @if [ -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \
echo ' headers_check - Sanity check on exported headers'; \
fi
@echo ''
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
clean: rm-dirs := $(MODVERDIR)
+clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
clean: $(clean-dirs)
$(call cmd,rmdirs)
+ $(call cmd,rmfiles)
@find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
ifeq ($(ARCH),um)
ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
else
-ALLINCLUDE_ARCHS := $(ARCH)
+ALLINCLUDE_ARCHS := $(SRCARCH)
endif
else
#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour.
ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
endif
+# Take care of arch/x86
+ifeq ($(ARCH), $(SRCARCH))
ALLSOURCE_ARCHS := $(ARCH)
+else
+ALLSOURCE_ARCHS := $(ARCH) $(SRCARCH)
+endif
define find-sources
- ( find $(__srctree) $(RCS_FIND_IGNORE) \
- \( -name include -o -name arch \) -prune -o \
- -name $1 -print; \
- for ARCH in $(ALLSOURCE_ARCHS) ; do \
- find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
+ ( for arch in $(ALLSOURCE_ARCHS) ; do \
+ find $(__srctree)arch/$${arch} $(RCS_FIND_IGNORE) \
-name $1 -print; \
done ; \
find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
find $(__srctree)include $(RCS_FIND_IGNORE) \
\( -name config -o -name 'asm-*' \) -prune \
-o -name $1 -print; \
- for ARCH in $(ALLINCLUDE_ARCHS) ; do \
- find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
+ for arch in $(ALLINCLUDE_ARCHS) ; do \
+ find $(__srctree)include/asm-$${arch} $(RCS_FIND_IGNORE) \
-name $1 -print; \
done ; \
find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
- -name $1 -print )
+ -name $1 -print; \
+ find $(__srctree) $(RCS_FIND_IGNORE) \
+ \( -name include -o -name arch \) -prune -o \
+ -name $1 -print; \
+ )
endef
define all-sources
-I __initdata,__exitdata,__acquires,__releases \
-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
--extra=+f --c-kinds=+px \
- --regex-asm='/ENTRY\(([^)]*)\).*/\1/'; \
+ --regex-asm='/^ENTRY\(([^)]*)\).*/\1/'; \
$(all-kconfigs) | xargs $1 -a \
--langdef=kconfig \
--language-force=kconfig \
namespacecheck:
$(PERL) $(srctree)/scripts/namespace.pl
+export_report:
+ $(PERL) $(srctree)/scripts/export_report.pl
+
endif #ifeq ($(config-targets),1)
endif #ifeq ($(mixed-targets),1)
cmd_rmfiles = rm -f $(rm-files)
-a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
- $(NOSTDINC_FLAGS) $(CPPFLAGS) \
+a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
+ $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
$(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
quiet_cmd_as_o_S = AS $@
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