VERSION = 2
PATCHLEVEL = 6
-SUBLEVEL = 18
-EXTRAVERSION =
-NAME=Avast! A bilge rat!
+SUBLEVEL = 23
+EXTRAVERSION =-rc8
+NAME = Arr Matey! A Hairy Bilge Rat!
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
-# Do not print "Entering directory ..."
-MAKEFLAGS += --no-print-directory
+# Do not:
+# o use make's built-in rules and variables
+# (this increases performance and avoid hard-to-debug behavour);
+# o print "Entering directory ...";
+MAKEFLAGS += -rR --no-print-directory
# We are using a recursive build, so we need to do a little thinking
# to get the ordering right.
KBUILD_VERBOSE = 0
endif
-# Call checker as part of compilation of C files
-# Use 'make C=1' to enable checking (sparse, by default)
-# Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....'
+# Call a source code checker (by default, "sparse") as part of the
+# C compilation.
+#
+# Use 'make C=1' to enable checking of only re-compiled files.
+# Use 'make C=2' to enable checking of *all* source files, regardless
+# of whether they are re-compiled or not.
+#
+# See the file "Documentation/sparse.txt" for more details, including
+# where to get the "sparse" utility.
ifdef C
ifeq ("$(origin C)", "command line")
# Look for make include files relative to root of kernel src
MAKEFLAGS += --include-dir=$(srctree)
-# We need some generic definitions
-include $(srctree)/scripts/Kbuild.include
-
-# Do not use make's built-in rules and variables
-# This increases performance and avoid hard-to-debug behavour
-MAKEFLAGS += -rR
+# We need some generic definitions.
+include $(srctree)/scripts/Kbuild.include
# Make variables (CC, etc...)
MODFLAGS = -DMODULE
CFLAGS_MODULE = $(MODFLAGS)
AFLAGS_MODULE = $(MODFLAGS)
-LDFLAGS_MODULE = -r
+LDFLAGS_MODULE =
CFLAGS_KERNEL =
AFLAGS_KERNEL =
CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
- -fno-strict-aliasing -fno-common
+ -fno-strict-aliasing -fno-common \
+ -Werror-implicit-function-declaration
AFLAGS := -D__ASSEMBLY__
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
include $(srctree)/arch/$(ARCH)/Makefile
ifdef CONFIG_FRAME_POINTER
-CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
+CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
else
CFLAGS += -fomit-frame-pointer
endif
-ifdef CONFIG_UNWIND_INFO
-CFLAGS += -fasynchronous-unwind-tables
-endif
-
ifdef CONFIG_DEBUG_INFO
CFLAGS += -g
endif
# disable pointer signed / unsigned warnings in gcc 4.0
CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+# 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
# set in the environment
# ---------------------------------------------------------------------------
# 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-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
vmlinux-all := $(vmlinux-init) $(vmlinux-main)
vmlinux-lds := arch/$(ARCH)/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
$(call cmd,vmlinux__)
$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
- $(Q)$(if $($(quiet)cmd_sysmap), \
- echo ' $($(quiet)cmd_sysmap) System.map' &&) \
- $(cmd_sysmap) $@ System.map; \
- if [ $$? -ne 0 ]; then \
- rm -f $@; \
- /bin/false; \
+ $(Q)$(if $($(quiet)cmd_sysmap), \
+ echo ' $($(quiet)cmd_sysmap) System.map' &&) \
+ $(cmd_sysmap) $@ System.map; \
+ if [ $$? -ne 0 ]; then \
+ rm -f $@; \
+ /bin/false; \
fi;
$(verify_kallsyms)
endef
kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
define verify_kallsyms
- $(Q)$(if $($(quiet)cmd_sysmap), \
- echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
+ $(Q)$(if $($(quiet)cmd_sysmap), \
+ echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
$(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
- $(Q)cmp -s System.map .tmp_System.map || \
- (echo Inconsistent kallsyms data; \
- echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
+ $(Q)cmp -s System.map .tmp_System.map || \
+ (echo Inconsistent kallsyms data; \
+ echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
rm .tmp_kallsyms* ; /bin/false )
endef
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)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) ;
$(Q)$(MAKE) $(build)=$@
# Build the kernel release string
-# The KERNELRELEASE is stored in a file named include/config/kernel.release
-# to be used when executing for example make install or make modules_install
#
-# Take the contents of any files called localversion* and the config
-# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
-# LOCALVERSION from the command line override all of this
-
-nullstring :=
-space := $(nullstring) # end of line
+# The KERNELRELEASE value built here is stored in the file
+# include/config/kernel.release, and is used when executing several
+# make targets, such as "make install" or "make modules_install."
+#
+# The eventual kernel release string consists of the following fields,
+# shown in a hierarchical format to show how smaller parts are concatenated
+# to form the larger and final value, with values coming from places like
+# the Makefile, kernel config options, make command line options and/or
+# SCM tag information.
+#
+# $(KERNELVERSION)
+# $(VERSION) eg, 2
+# $(PATCHLEVEL) eg, 6
+# $(SUBLEVEL) eg, 18
+# $(EXTRAVERSION) eg, -rc6
+# $(localver-full)
+# $(localver)
+# 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)
+# $(LOCALVERSION) (from make command line if provided)
+#
+# Note how the final $(localver-auto) string is included *only* if the
+# kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
+# moment, only git is supported but other SCMs can edit the script
+# scripts/setlocalversion and add the appropriate checks as needed.
-___localver = $(objtree)/localversion* $(srctree)/localversion*
-__localver = $(sort $(wildcard $(___localver)))
-# skip backup files (containing '~')
-_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
+pattern = ".*/localversion[^~]*"
+string = $(shell cat /dev/null \
+ `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`)
-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)
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
HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
PHONY += headers_install_all
-headers_install_all: include/linux/version.h
- $(Q)unifdef -Ux /dev/null
+headers_install_all: include/linux/version.h scripts_basic FORCE
+ $(Q)$(MAKE) $(build)=scripts scripts/unifdef
$(Q)for arch in $(HDRARCHES); do \
- $(MAKE) ARCH=$$arch -rR -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\
+ $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\
done
PHONY += headers_install
-headers_install: include/linux/version.h
- @if [ ! -r include/asm-$(ARCH)/Kbuild ]; then \
+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))'; \
exit 1 ; fi
- $(Q)unifdef -Ux /dev/null
- $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include
+ $(Q)$(MAKE) $(build)=scripts scripts/unifdef
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst 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) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
# ---------------------------------------------------------------------------
# Modules
PHONY += modules
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
@echo ' Building modules, stage 2.';
- $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
# Target to prepare building external modules
rm -f $(MODLIB)/build ; \
ln -s $(objtree) $(MODLIB)/build ; \
fi
- $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
# If System.map exists, run depmod. This deliberately does not have a
# dependency on System.map since that would run the dependency tree on
help:
@echo 'Cleaning targets:'
- @echo ' clean - remove most generated files but keep the config'
- @echo ' mrproper - remove all generated files + config + various backup files'
+ @echo ' clean - Remove most generated files but keep the config and'
+ @echo ' enough build support to build external modules'
+ @echo ' mrproper - Remove all generated files + config + various backup files'
+ @echo ' distclean - mrproper + remove editor backup and patch files'
@echo ''
@echo 'Configuration targets:'
@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
@echo ' cscope - Generate cscope index'
@echo ' kernelrelease - Output the release version string'
@echo ' kernelversion - Output the version stored in Makefile'
- @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+ @if [ -r $(srctree)/include/asm-$(ARCH)/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 \
+ @if [ -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \
echo ' headers_check - Sanity check on exported headers'; \
fi
@echo ''
echo '')
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
+ @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
@echo ' make C=2 [targets] Force check of all c source with $$CHECK'
modules: $(module-dirs)
@echo ' Building modules, stage 2.';
- $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
PHONY += modules_install
modules_install: _emodinst_ _emodinst_post
PHONY += _emodinst_
_emodinst_:
$(Q)mkdir -p $(MODLIB)/$(install-dir)
- $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
# Run depmod only is we have System.map and depmod is executable
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
ALLSOURCE_ARCHS := $(ARCH)
define find-sources
- ( find $(__srctree) $(RCS_FIND_IGNORE) \
- \( -name include -o -name arch \) -prune -o \
- -name $1 -print; \
- for ARCH in $(ALLSOURCE_ARCHS) ; do \
+ ( for ARCH in $(ALLSOURCE_ARCHS) ; do \
find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
-name $1 -print; \
done ; \
-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
$(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 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:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \
+ $(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]*config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
+ $(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_TAGS = MAKE $@
define cmd_TAGS
rm -f $@; \
- ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
- echo "-I __initdata,__exitdata,__acquires,__releases \
- -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
- --extra=+f --c-kinds=+px"`; \
- $(all-sources) | xargs etags $$ETAGSF -a; \
- if test "x$$ETAGSF" = x; then \
- $(all-kconfigs) | xargs etags -a \
- --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
- $(all-defconfigs) | xargs etags -a \
- --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
- fi
+ $(call xtags,etags)
endef
TAGS: FORCE
$(call cmd,TAGS)
-
quiet_cmd_tags = MAKE $@
define cmd_tags
rm -f $@; \
- CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
- echo "-I __initdata,__exitdata,__acquires,__releases \
- -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
- --extra=+f --c-kinds=+px"`; \
- $(all-sources) | xargs ctags $$CTAGSF -a
+ $(call xtags,ctags)
endef
tags: FORCE
endif #ifeq ($(mixed-targets),1)
PHONY += checkstack kernelrelease kernelversion
+
+# UML needs a little special treatment here. It wants to use the host
+# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
+# else wants $(ARCH), including people doing cross-builds, which means
+# that $(SUBARCH) doesn't work here.
+ifeq ($(ARCH), um)
+CHECKSTACK_ARCH := $(SUBARCH)
+else
+CHECKSTACK_ARCH := $(ARCH)
+endif
checkstack:
$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
- $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
+ $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
kernelrelease:
$(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
%.ko: prepare scripts FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir) $(@:.ko=.o)
- $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
# FIXME Should go into a make.lib or something
# ===========================================================================
PHONY += FORCE
FORCE:
+# Cancel implicit rules on top Makefile, `-rR' will apply to sub-makes.
+Makefile: ;
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends.
Code Review / linux-2.6.git / blobdiff