VERSION = 2
PATCHLEVEL = 6
-SUBLEVEL = 8
-EXTRAVERSION =
+SUBLEVEL = 9
+EXTRAVERSION = -vs1.9.3
NAME=Zonked Quokka
# *DOCUMENTATION*
# check that the output directory actually exists
saved-output := $(KBUILD_OUTPUT)
KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
-$(if $(wildcard $(KBUILD_OUTPUT)),, \
+$(if $(KBUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
.PHONY: $(MAKECMDGOALS)
export srctree objtree VPATH TOPDIR
-KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
+nullstring :=
+space := $(nullstring) # end of line
+
+# Take the contents of any files called localversion* and the config
+# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. Be
+# careful not to include files twice if building in the source
+# directory. LOCALVERSION from the command line override all of this
+
+ifeq ($(objtree),$(srctree))
+localversion-files := $(wildcard $(srctree)/localversion*)
+else
+localversion-files := $(wildcard $(objtree)/localversion* $(srctree)/localversion*)
+endif
+
+LOCALVERSION = $(subst $(space),, \
+ $(shell cat /dev/null $(localversion-files)) \
+ $(subst ",,$(CONFIG_LOCALVERSION)))
+
+KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)$(LOCALVERSION)
# SUBARCH tells the usermode build what the underlying arch is. That is set
# first, and if a usermode build is happening, the "ARCH=um" on the command
quiet=silent_
endif
-check_gcc = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
+export quiet Q KBUILD_VERBOSE
+
+######
+# cc support functions to be used (only) in arch/$(ARCH)/Makefile
+# See documentation in Documentation/kbuild/makefiles.txt
+
+# cc-option
+# Usage: cflags-y += $(call gcc-option, -march=winchip-c6, -march=i586)
+
+cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+ > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
+
+# For backward compatibility
+check_gcc = $(warning check_gcc is deprecated - use cc-option) \
+ $(call cc-option, $(1),$(2))
+
+# cc-option-yn
+# Usage: flag := $(call gcc-option-yn, -march=winchip-c6)
+cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+ > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
+
+# cc-version
+# Usage gcc-ver := $(call cc-version $(CC))
+cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
+ $(if $(1), $(1), $(CC)))
-export quiet Q KBUILD_VERBOSE check_gcc
# Look for make include files relative to root of kernel src
MAKEFLAGS += --include-dir=$(srctree)
KALLSYMS = scripts/kallsyms
PERL = perl
CHECK = sparse
+CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__
MODFLAGS = -DMODULE
CFLAGS_MODULE = $(MODFLAGS)
AFLAGS_MODULE = $(MODFLAGS)
NOSTDINC_FLAGS = -nostdinc -iwithprefix include
-CPPFLAGS := -D__KERNEL__ -Iinclude \
- $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)
+# Use LINUXINCLUDE when you must reference the include/ directory.
+# Needed to be compatible with the O= option
+LINUXINCLUDE := -Iinclude \
+ $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)
+
+CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
CFLAGS := -Wall -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common
AFLAGS := -D__ASSEMBLY__
-export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION KERNELRELEASE ARCH \
- CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
+export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION LOCALVERSION KERNELRELEASE \
+ ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
- HOSTCXX HOSTCXXFLAGS LDFLAGS_BLOB LDFLAGS_MODULE CHECK
+ HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
-export CPPFLAGS NOSTDINC_FLAGS OBJCOPYFLAGS LDFLAGS
+export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
include/linux/autoconf.h: ;
endif
-include $(srctree)/arch/$(ARCH)/Makefile
-
-# Default kernel image to build when no specific target is given.
-# KBUILD_IMAGE may be overruled on the commandline or
-# set in the environment
-# Also any assingments in arch/$(ARCH)/Makefiel take precedence over
-# this default value
-export KBUILD_IMAGE ?= vmlinux
-
# The all: target is the default when no target is given on the
# command line.
# This allow a user to issue only 'make' to build a kernel including modules
endif
# warn about C99 declaration after statement
-CFLAGS += $(call check_gcc,-Wdeclaration-after-statement,)
+CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+
+include $(srctree)/arch/$(ARCH)/Makefile
+
+# Default kernel image to build when no specific target is given.
+# KBUILD_IMAGE may be overruled on the commandline or
+# set in the environment
+# Also any assingments in arch/$(ARCH)/Makefiel take precedence over
+# this default value
+export KBUILD_IMAGE ?= vmlinux
#
# INSTALL_PATH specifies where to place the updated kernel and system map
# Build vmlinux
# ---------------------------------------------------------------------------
+# vmlinux is build 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.
+# Ordering when linking is important, and $(vmlinux-init) must be first.
+#
+# vmlinux
+# ^
+# |
+# +-< $(vmlinux-init)
+# | +--< init/version.o + more
+# |
+# +--< $(vmlinux-main)
+# | +--< driver/built-in.o mm/built-in.o + more
+# |
+# +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
+#
+# vmlinux version (uname -v) cannot be updated during normal
+# descending-into-subdirs phase since we do not yet know if we need to
+# update vmlinux.
+# Therefore this step is delayed until just before final link of vmlinux -
+# except in the kallsyms case where it is done just before adding the
+# symbols to the kernel.
+#
+# System.map is generated to document addresses of all kernel symbols
+
+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
+
+# Rule to link vmlinux - also used during CONFIG_KALLSYMS
+# May be overridden by arch/$(ARCH)/Makefile
+quiet_cmd_vmlinux__ ?= LD $@
+ cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
+ -T $(vmlinux-lds) $(vmlinux-init) \
+ --start-group $(vmlinux-main) --end-group \
+ $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
+
+# Generate new vmlinux version
+quiet_cmd_vmlinux_version = GEN .version
+ cmd_vmlinux_version = set -e; \
+ . $(srctree)/scripts/mkversion > .tmp_version; \
+ mv -f .tmp_version .version; \
+ $(MAKE) $(build)=init
+
+# Generate System.map
+quiet_cmd_sysmap = SYSMAP
+ cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
+
+# Link of vmlinux
+# If CONFIG_KALLSYMS is set .version is already updated
+# Generate System.map and verify that the content is consistent
-# This is a bit tricky: If we need to relink vmlinux, we want
-# the version number incremented, which means recompile init/version.o
-# and relink init/init.o. However, we cannot do this during the
-# normal descending-into-subdirs phase, since at that time
-# we cannot yet know if we will need to relink vmlinux.
-# So we descend into init/ inside the rule for vmlinux again.
-head-y += $(HEAD)
-vmlinux-objs := $(head-y) $(init-y) $(core-y) $(libs-y) $(drivers-y) $(net-y)
-
-quiet_cmd_vmlinux__ = LD $@
-define cmd_vmlinux__
- $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) $(head-y) $(init-y) \
- --start-group \
- $(core-y) \
- $(libs-y) \
- $(drivers-y) \
- $(net-y) \
- --end-group \
- $(filter .tmp_kallsyms%,$^) \
- -o $@
-endef
+define rule_vmlinux__
+ $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
-# set -e makes the rule exit immediately on error
+ $(call cmd,vmlinux__)
+ $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
-define rule_vmlinux__
- +set -e; \
- $(if $(filter .tmp_kallsyms%,$^),, \
- echo ' GEN .version'; \
- . $(srctree)/scripts/mkversion > .tmp_version; \
- mv -f .tmp_version .version; \
- $(MAKE) $(build)=init; \
- ) \
- $(if $($(quiet)cmd_vmlinux__), \
- echo ' $($(quiet)cmd_vmlinux__)' &&) \
- $(cmd_vmlinux__); \
- echo 'cmd_$@ := $(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; \
+ fi;
+ $(verify_kallsyms)
endef
-do_system_map = $(NM) $(1) | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | sort > $(2)
-
-LDFLAGS_vmlinux += -T arch/$(ARCH)/kernel/vmlinux.lds.s
-
-# Generate section listing all symbols and add it into vmlinux
-# It's a three stage process:
-# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
-# empty
-# Running kallsyms on that gives us .tmp_kallsyms1.o with
-# the right size
-# o .tmp_vmlinux2 now has a __kallsyms section of the right size,
-# but due to the added section, some addresses have shifted
-# From here, we generate a correct .tmp_kallsyms2.o
-# o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
-# o Verify that the System.map from vmlinux matches the map from
-# .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
-# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
-# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
-# temporary bypass to allow the kernel to be built while the
-# maintainers work out what went wrong with kallsyms.
ifdef CONFIG_KALLSYMS
+# Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
+# It's a three stage process:
+# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
+# empty
+# Running kallsyms on that gives us .tmp_kallsyms1.o with
+# the right size - vmlinux version (uname -v) is updated during this step
+# o .tmp_vmlinux2 now has a __kallsyms section of the right size,
+# but due to the added section, some addresses have shifted.
+# From here, we generate a correct .tmp_kallsyms2.o
+# o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
+# o Verify that the System.map from vmlinux matches the map from
+# .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
+# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
+# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
+# temporary bypass to allow the kernel to be built while the
+# maintainers work out what went wrong with kallsyms.
ifdef CONFIG_KALLSYMS_EXTRA_PASS
last_kallsyms := 3
kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
-define rule_verify_kallsyms
- @$(call do_system_map, .tmp_vmlinux$(last_kallsyms), .tmp_System.map)
- @cmp -s System.map .tmp_System.map || \
- (echo Inconsistent kallsyms data, try setting CONFIG_KALLSYMS_EXTRA_PASS ; rm .tmp_kallsyms* ; false)
+define verify_kallsyms
+ $(Q)$(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; \
+ rm .tmp_kallsyms* ; /bin/false )
endef
+# Update vmlinux version before link
+# Use + in front of this rule to silent warning about make -j1
+cmd_ksym_ld = $(cmd_vmlinux__)
+define rule_ksym_ld
+ +$(call cmd,vmlinux_version)
+ $(call cmd,vmlinux__)
+ $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
+endef
+
+# Generate .S file with all kernel symbols
quiet_cmd_kallsyms = KSYM $@
-cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) $(foreach x,$(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
+ cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
+ $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
$(call if_changed_dep,as_o_S)
-.tmp_kallsyms%.S: .tmp_vmlinux%
+.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
$(call cmd,kallsyms)
-.tmp_vmlinux1: $(vmlinux-objs) arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
- $(call if_changed_rule,vmlinux__)
-
-.tmp_vmlinux2: $(vmlinux-objs) .tmp_kallsyms1.o arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
- $(call if_changed_rule,vmlinux__)
-
-.tmp_vmlinux3: $(vmlinux-objs) .tmp_kallsyms2.o arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
- $(call if_changed_rule,vmlinux__)
+# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
+.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
+ $(call if_changed_rule,ksym_ld)
-endif
+.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
+ $(call if_changed,vmlinux__)
-# Finally the vmlinux rule
+.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
+ $(call if_changed,vmlinux__)
-define rule_vmlinux
- $(rule_vmlinux__); \
- $(call do_system_map, $@, System.map)
- $(rule_verify_kallsyms)
-endef
+# Needs to visit scripts/ before $(KALLSYMS) can be used.
+$(KALLSYMS): scripts ;
-vmlinux: $(vmlinux-objs) $(kallsyms.o) arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
- $(call if_changed_rule,vmlinux)
+endif # ifdef CONFIG_KALLSYMS
-# The actual objects are generated when descending,
-# make sure no implicit rule kicks in
+# vmlinux image - including updated kernel symbols
+vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
+ $(call if_changed_rule,vmlinux__)
-$(sort $(vmlinux-objs)) arch/$(ARCH)/kernel/vmlinux.lds.s: $(vmlinux-dirs) ;
+# The actual objects are generated when descending,
+# make sure no implicit rule kicks in
+$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
# Handle descending into subdirectories listed in $(vmlinux-dirs)
# Preset locale variables to speed up the build process. Limit locale
# using a seperate output directory. This allows convinient use
# of make in output directory
prepare2:
- $(Q)if [ ! $(srctree) -ef $(objtree) ]; then \
- $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
- $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \
- > $(objtree)/Makefile; \
+ $(Q)if /usr/bin/env test ! $(srctree) -ef $(objtree); then \
+ $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
+ $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \
+ > $(objtree)/Makefile; \
fi
# prepare1 is used to check if we are building in a separate output directory,
# Leave this as default for preprocessing vmlinux.lds.S, which is now
# done in arch/$(ARCH)/kernel/Makefile
-export AFLAGS_vmlinux.lds.o += -P -C -U$(ARCH)
+export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
# Single targets
# ---------------------------------------------------------------------------
# Generate some files
# ---------------------------------------------------------------------------
-# version.h changes when $(KERNELRELEASE) etc change, as defined in
-# this Makefile
+# KERNELRELEASE can change from a few different places, meaning version.h
+# needs to be updated, so this check is forced on all builds
uts_len := 64
)
endef
-include/linux/version.h: Makefile
+include/linux/version.h: $(srctree)/Makefile FORCE
$(call filechk,version.h)
# ---------------------------------------------------------------------------
@echo ' rpm - Build a kernel as an RPM package'
@echo ' tags/TAGS - Generate tags file for editors'
@echo ' cscope - Generate cscope index'
+ @echo ''
+ @echo 'Static analysers'
+ @echo ' buildcheck - List dangling references to vmlinux discarded sections'
+ @echo ' and init sections from non-init sections'
@echo ' checkstack - Generate a list of stack hogs'
+ @echo ' namespacecheck - Name space analysis on compiled kernel'
+ @echo ''
@echo 'Kernel packaging:'
@$(MAKE) -f $(package-dir)/Makefile help
@echo ''
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
- @echo ' make C=1 [targets] Check all c source with checker tool'
+ @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)'
+ @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)'
@echo ''
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
@echo 'For further info see the ./README file'
| xargs $(PERL) -w scripts/checkversion.pl
buildcheck:
- $(PERL) scripts/reference_discarded.pl
- $(PERL) scripts/reference_init.pl
+ $(PERL) $(srctree)/scripts/reference_discarded.pl
+ $(PERL) $(srctree)/scripts/reference_init.pl
+
+namespacecheck:
+ $(PERL) $(srctree)/scripts/namespace.pl
endif #ifeq ($(config-targets),1)
endif #ifeq ($(mixed-targets),1)
include $(cmd_files)
endif
+# Execute command and generate cmd file
+if_changed = $(if $(strip $? \
+ $(filter-out $(cmd_$(1)),$(cmd_$@))\
+ $(filter-out $(cmd_$@),$(cmd_$(1)))),\
+ @set -e; \
+ $(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) \
+ $(cmd_$(1)); \
+ echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd)
+
+
# execute the command and also postprocess generated .d dependencies
# file
-
if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
$(filter-out $(cmd_$(1)),$(cmd_$@))\
$(filter-out $(cmd_$@),$(cmd_$(1)))),\
- @set -e; \
+ $(Q)set -e; \
$(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) \
$(cmd_$(1)); \
scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \
if_changed_rule = $(if $(strip $? \
$(filter-out $(cmd_$(1)),$(cmd_$(@F)))\
$(filter-out $(cmd_$(@F)),$(cmd_$(1)))),\
- @$(rule_$(1)))
+ $(Q)$(rule_$(1)))
# If quiet is set, only print short version of command
git://git.onelab.eu / linux-2.6.git / blobdiff