diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 445 |
1 files changed, 295 insertions, 150 deletions
@@ -1,8 +1,8 @@ VERSION = 3 -PATCHLEVEL = 5 +PATCHLEVEL = 16 SUBLEVEL = 0 EXTRAVERSION = -NAME = Saber-toothed Squirrel +NAME = Shuffling Zombie Juror # *DOCUMENTATION* # To see a list of typical targets execute "make help" @@ -22,6 +22,9 @@ LC_COLLATE=C LC_NUMERIC=C export LC_COLLATE LC_NUMERIC +# Avoid interference with shell env settings +unexport GREP_OPTIONS + # We are using a recursive build, so we need to do a little thinking # to get the ordering right. # @@ -38,6 +41,29 @@ export LC_COLLATE LC_NUMERIC # descending is started. They are now explicitly listed as the # prepare rule. +# Beautify output +# --------------------------------------------------------------------------- +# +# Normally, we echo the whole command before executing it. By making +# that echo $($(quiet)$(cmd)), we now have the possibility to set +# $(quiet) to choose other forms of output instead, e.g. +# +# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ +# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< +# +# If $(quiet) is empty, the whole command will be printed. +# If it is set to "quiet_", only the short version will be printed. +# If it is set to "silent_", nothing will be printed at all, since +# the variable $(silent_cmd_cc_o_c) doesn't exist. +# +# A simple variant is to prefix commands with $(Q) - that's useful +# for commands that shall be hidden in non-verbose mode. +# +# $(Q)ln $@ :< +# +# If KBUILD_VERBOSE equals 0 then the above command will be hidden. +# If KBUILD_VERBOSE equals 1 then the above command is displayed. +# # To put more focus on warnings, be less verbose as default # Use 'make V=1' to see the full commands @@ -48,6 +74,29 @@ ifndef KBUILD_VERBOSE KBUILD_VERBOSE = 0 endif +ifeq ($(KBUILD_VERBOSE),1) + quiet = + Q = +else + quiet=quiet_ + Q = @ +endif + +# If the user is running make -s (silent mode), suppress echoing of +# commands + +ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 +ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) + quiet=silent_ +endif +else # make-3.8x +ifneq ($(filter s% -s%,$(MAKEFLAGS)),) + quiet=silent_ +endif +endif + +export quiet Q KBUILD_VERBOSE + # Call a source code checker (by default, "sparse") as part of the # C compilation. # @@ -102,10 +151,6 @@ ifeq ("$(origin O)", "command line") KBUILD_OUTPUT := $(O) endif -ifeq ("$(origin W)", "command line") - export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) -endif - # That's our default target when none is given on the command line PHONY := _all _all: @@ -117,16 +162,23 @@ ifneq ($(KBUILD_OUTPUT),) # Invoke a second make in the output directory, passing relevant variables # check that the output directory actually exists saved-output := $(KBUILD_OUTPUT) -KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) +KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ + && /bin/pwd) $(if $(KBUILD_OUTPUT),, \ - $(error output directory "$(saved-output)" does not exist)) + $(error failed to create output directory "$(saved-output)")) PHONY += $(MAKECMDGOALS) sub-make $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make - $(Q)@: + @: +# Fake the "Entering directory" message once, so that IDEs/editors are +# able to understand relative filenames. + echodir := @echo + quiet_echodir := @echo +silent_echodir := @: sub-make: FORCE + $($(quiet)echodir) "make[1]: Entering directory \`$(KBUILD_OUTPUT)'" $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ KBUILD_SRC=$(CURDIR) \ KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ @@ -149,8 +201,18 @@ else _all: modules endif -srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) -objtree := $(CURDIR) +ifeq ($(KBUILD_SRC),) + # building in the source tree + srctree := . +else + ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) + # building in a subdirectory of the source tree + srctree := .. + else + srctree := $(KBUILD_SRC) + endif +endif +objtree := . src := $(srctree) obj := $(objtree) @@ -162,14 +224,15 @@ export srctree objtree VPATH # 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 # line overrides the setting of ARCH below. If a native build is happening, -# then ARCH is assigned, getting whatever value it gets normally, and +# then ARCH is assigned, getting whatever value it gets normally, and # SUBARCH is subsequently ignored. -SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ +SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ + -e s/sun4u/sparc64/ \ -e s/arm.*/arm/ -e s/sa110/arm/ \ -e s/s390x/s390/ -e s/parisc64/parisc/ \ -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ - -e s/sh[234].*/sh/ ) + -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) # Cross compiling and selecting different set of gcc/bin-utils # --------------------------------------------------------------------------- @@ -191,7 +254,6 @@ SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ # "make" in the configured kernel build directory always uses that. # Default value for CROSS_COMPILE is not to prefix executables # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile -export KBUILD_BUILDHOST := $(SUBARCH) ARCH ?= $(SUBARCH) CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) @@ -244,24 +306,29 @@ HOSTCXX = g++ HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer HOSTCXXFLAGS = -O2 +ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) +HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ + -Wno-missing-field-initializers -fno-delete-null-pointer-checks +endif + # Decide whether to build built-in, modular, or both. # Normally, just do built-in. KBUILD_MODULES := KBUILD_BUILTIN := 1 -# If we have only "make modules", don't compile built-in objects. -# When we're building modules with modversions, we need to consider -# the built-in objects during the descend as well, in order to -# make sure the checksums are up to date before we record them. +# If we have only "make modules", don't compile built-in objects. +# When we're building modules with modversions, we need to consider +# the built-in objects during the descend as well, in order to +# make sure the checksums are up to date before we record them. ifeq ($(MAKECMDGOALS),modules) KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) endif -# If we have "make <whatever> modules", compile modules -# in addition to whatever we do anyway. -# Just "make" or "make all" shall build modules as well +# If we have "make <whatever> modules", compile modules +# in addition to whatever we do anyway. +# Just "make" or "make all" shall build modules as well ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) KBUILD_MODULES := 1 @@ -274,47 +341,15 @@ endif export KBUILD_MODULES KBUILD_BUILTIN export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD -# Beautify output -# --------------------------------------------------------------------------- -# -# Normally, we echo the whole command before executing it. By making -# that echo $($(quiet)$(cmd)), we now have the possibility to set -# $(quiet) to choose other forms of output instead, e.g. -# -# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ -# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< -# -# If $(quiet) is empty, the whole command will be printed. -# If it is set to "quiet_", only the short version will be printed. -# If it is set to "silent_", nothing will be printed at all, since -# the variable $(silent_cmd_cc_o_c) doesn't exist. -# -# A simple variant is to prefix commands with $(Q) - that's useful -# for commands that shall be hidden in non-verbose mode. -# -# $(Q)ln $@ :< -# -# If KBUILD_VERBOSE equals 0 then the above command will be hidden. -# If KBUILD_VERBOSE equals 1 then the above command is displayed. - -ifeq ($(KBUILD_VERBOSE),1) - quiet = - Q = +ifneq ($(CC),) +ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1) +COMPILER := clang else - quiet=quiet_ - Q = @ +COMPILER := gcc endif - -# If the user is running make -s (silent mode), suppress echoing of -# commands - -ifneq ($(filter s% -s%,$(MAKEFLAGS)),) - quiet=silent_ +export COMPILER endif -export quiet Q KBUILD_VERBOSE - - # Look for make include files relative to root of kernel src MAKEFLAGS += --include-dir=$(srctree) @@ -323,7 +358,6 @@ $(srctree)/scripts/Kbuild.include: ; include $(srctree)/scripts/Kbuild.include # Make variables (CC, etc...) - AS = $(CROSS_COMPILE)as LD = $(CROSS_COMPILE)ld CC = $(CROSS_COMPILE)gcc @@ -350,20 +384,30 @@ AFLAGS_KERNEL = CFLAGS_GCOV = -fprofile-arcs -ftest-coverage +# Use USERINCLUDE when you must reference the UAPI directories only. +USERINCLUDE := \ + -I$(srctree)/arch/$(hdr-arch)/include/uapi \ + -Iarch/$(hdr-arch)/include/generated/uapi \ + -I$(srctree)/include/uapi \ + -Iinclude/generated/uapi \ + -include $(srctree)/include/linux/kconfig.h + # Use LINUXINCLUDE when you must reference the include/ directory. # Needed to be compatible with the O= option -LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include \ - -Iarch/$(hdr-arch)/include/generated -Iinclude \ - $(if $(KBUILD_SRC), -I$(srctree)/include) \ - -include $(srctree)/include/linux/kconfig.h +LINUXINCLUDE := \ + -I$(srctree)/arch/$(hdr-arch)/include \ + -Iarch/$(hdr-arch)/include/generated \ + $(if $(KBUILD_SRC), -I$(srctree)/include) \ + -Iinclude \ + $(USERINCLUDE) KBUILD_CPPFLAGS := -D__KERNEL__ KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common \ -Werror-implicit-function-declaration \ - -Wno-format-security \ - -fno-delete-null-pointer-checks + -Wno-format-security + KBUILD_AFLAGS_KERNEL := KBUILD_CFLAGS_KERNEL := KBUILD_AFLAGS := -D__ASSEMBLY__ @@ -395,8 +439,9 @@ export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_ve # Files to ignore in find ... statements -RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \ - -o -name .pc -o -name .hg -o -name .git \) -prune -o +export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ + -name CVS -o -name .pc -o -name .hg -o -name .git \) \ + -prune -o export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ --exclude CVS --exclude .pc --exclude .hg --exclude .git @@ -427,7 +472,9 @@ endif PHONY += asm-generic asm-generic: $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ - obj=arch/$(SRCARCH)/include/generated/asm + src=asm obj=arch/$(SRCARCH)/include/generated/asm + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ + src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm # To make sure we do not include .config for any of the *config targets # catch them early, and hand them over to scripts/kconfig/Makefile @@ -437,9 +484,11 @@ asm-generic: # Detect when mixed targets is specified, and make a second invocation # of make so .config is not included in this case either (for *config). +version_h := include/generated/uapi/linux/version.h + no-dot-config-targets := clean mrproper distclean \ cscope gtags TAGS tags help %docs check% coccicheck \ - include/linux/version.h headers_% archheaders archscripts \ + $(version_h) headers_% archheaders archscripts \ kernelversion %src-pkg config-targets := 0 @@ -466,8 +515,16 @@ ifeq ($(mixed-targets),1) # We're called with mixed targets (*config and build targets). # Handle them one by one. -%:: FORCE - $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ +PHONY += $(MAKECMDGOALS) __build_one_by_one + +$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one + @: + +__build_one_by_one: + $(Q)set -e; \ + for i in $(MAKECMDGOALS); do \ + $(MAKE) -f $(srctree)/Makefile $$i; \ + done else ifeq ($(config-targets),1) @@ -482,11 +539,9 @@ include $(srctree)/arch/$(SRCARCH)/Makefile export KBUILD_DEFCONFIG KBUILD_KCONFIG 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 $@ else @@ -499,7 +554,8 @@ ifeq ($(KBUILD_EXTMOD),) # Carefully list dependencies so we do not try to build scripts twice # in parallel PHONY += scripts -scripts: scripts_basic include/config/auto.conf include/config/tristate.conf +scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ + asm-generic $(Q)$(MAKE) $(build)=$(@) # Objects we will link into vmlinux / subdirs we need to visit @@ -535,11 +591,11 @@ PHONY += include/config/auto.conf include/config/auto.conf: $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ - echo; \ - echo " ERROR: Kernel configuration is invalid."; \ - echo " include/generated/autoconf.h or $@ are missing.";\ - echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ - echo; \ + echo >&2; \ + echo >&2 " ERROR: Kernel configuration is invalid."; \ + echo >&2 " include/generated/autoconf.h or $@ are missing.";\ + echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ + echo >&2 ; \ /bin/false) endif # KBUILD_EXTMOD @@ -555,14 +611,16 @@ endif # $(dot-config) # Defaults to vmlinux, but the arch makefile usually adds further targets all: vmlinux +include $(srctree)/arch/$(SRCARCH)/Makefile + +KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) + ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE -KBUILD_CFLAGS += -Os +KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) else KBUILD_CFLAGS += -O2 endif -include $(srctree)/arch/$(SRCARCH)/Makefile - ifdef CONFIG_READABLE_ASM # Disable optimizations that make assembler listings hard to read. # reorder blocks reorders the control in the function @@ -577,14 +635,45 @@ ifneq ($(CONFIG_FRAME_WARN),0) KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) endif -# Force gcc to behave correct even for buggy distributions -ifndef CONFIG_CC_STACKPROTECTOR -KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) +# Handle stack protector mode. +ifdef CONFIG_CC_STACKPROTECTOR_REGULAR + stackp-flag := -fstack-protector + ifeq ($(call cc-option, $(stackp-flag)),) + $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ + -fstack-protector not supported by compiler) + endif +else +ifdef CONFIG_CC_STACKPROTECTOR_STRONG + stackp-flag := -fstack-protector-strong + ifeq ($(call cc-option, $(stackp-flag)),) + $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ + -fstack-protector-strong not supported by compiler) + endif +else + # Force off for distro compilers that enable stack protector by default. + stackp-flag := $(call cc-option, -fno-stack-protector) endif +endif +KBUILD_CFLAGS += $(stackp-flag) + +ifeq ($(COMPILER),clang) +KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) +KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) +KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) +KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) +KBUILD_CFLAGS += $(call cc-disable-warning, gnu) +# Quiet clang warning: comparison of unsigned expression < 0 is always false +KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) +# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the +# source of a reference will be _MergedGlobals and not on of the whitelisted names. +# See modpost pattern 2 +KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) +else # This warning generated too much noise in a regular build. # Use make W=1 to enable this warning (see scripts/Makefile.build) KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) +endif ifdef CONFIG_FRAME_POINTER KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls @@ -599,17 +688,24 @@ KBUILD_CFLAGS += -fomit-frame-pointer endif endif +KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) + ifdef CONFIG_DEBUG_INFO KBUILD_CFLAGS += -g -KBUILD_AFLAGS += -gdwarf-2 +KBUILD_AFLAGS += -Wa,-gdwarf-2 endif ifdef CONFIG_DEBUG_INFO_REDUCED -KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) +KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ + $(call cc-option,-fno-var-tracking) endif ifdef CONFIG_FUNCTION_TRACER -KBUILD_CFLAGS += -pg +ifdef CONFIG_HAVE_FENTRY +CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) +endif +KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) +KBUILD_AFLAGS += $(CC_USING_FENTRY) ifdef CONFIG_DYNAMIC_FTRACE ifdef CONFIG_HAVE_C_RECORDMCOUNT BUILD_C_RECORDMCOUNT := y @@ -639,6 +735,15 @@ KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) # conserve stack if available KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) +# disallow errors like 'EXPORT_GPL(foo);' with missing header +KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) + +# require functions to have arguments in prototypes, not empty 'int foo()' +KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) + +# Prohibit date/time macros, which would make the build non-deterministic +KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) + # use the deterministic mode of AR if available KBUILD_ARFLAGS := $(call ar-option,D) @@ -647,23 +752,12 @@ ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO endif -# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments -# But warn user when we do so -warn-assign = \ -$(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") +include $(srctree)/scripts/Makefile.extrawarn -ifneq ($(KCPPFLAGS),) - $(call warn-assign,CPPFLAGS) - KBUILD_CPPFLAGS += $(KCPPFLAGS) -endif -ifneq ($(KAFLAGS),) - $(call warn-assign,AFLAGS) - KBUILD_AFLAGS += $(KAFLAGS) -endif -ifneq ($(KCFLAGS),) - $(call warn-assign,CFLAGS) - KBUILD_CFLAGS += $(KCFLAGS) -endif +# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments +KBUILD_CPPFLAGS += $(KCPPFLAGS) +KBUILD_AFLAGS += $(KAFLAGS) +KBUILD_CFLAGS += $(KCFLAGS) # Use --build-id when available. LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ @@ -688,6 +782,13 @@ export KBUILD_IMAGE ?= vmlinux export INSTALL_PATH ?= /boot # +# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. +# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as +# an argument if needed. Otherwise it defaults to the kernel install path +# +export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) + +# # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory # relocations required by build roots. This is not defined in the # makefile but the argument can be passed to make if needed. @@ -697,10 +798,10 @@ 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 value will be used as the options to the strip command. +# 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 value will be used as the options to the strip command. ifdef INSTALL_MOD_STRIP ifeq ($(INSTALL_MOD_STRIP),1) @@ -713,6 +814,29 @@ mod_strip_cmd = true endif # INSTALL_MOD_STRIP export mod_strip_cmd +# Select initial ramdisk compression format, default is gzip(1). +# This shall be used by the dracut(8) tool while creating an initramfs image. +# +INITRD_COMPRESS-y := gzip +INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 +INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma +INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz +INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo +INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 +# do not export INITRD_COMPRESS, since we didn't actually +# choose a sane default compression above. +# export INITRD_COMPRESS := $(INITRD_COMPRESS-y) + +ifdef CONFIG_MODULE_SIG_ALL +MODSECKEY = ./signing_key.priv +MODPUBKEY = ./signing_key.x509 +export MODPUBKEY +mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) +else +mod_sign_cmd = true +endif +export mod_sign_cmd + ifeq ($(KBUILD_EXTMOD),) core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ @@ -739,6 +863,8 @@ export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds export LDFLAGS_vmlinux +# used by scripts/pacmage/Makefile +export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) @@ -760,7 +886,7 @@ ifdef CONFIG_BUILD_DOCSRC endif +$(call if_changed,link-vmlinux) -# The actual objects are generated when descending, +# The actual objects are generated when descending, # make sure no implicit rule kicks in $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; @@ -774,10 +900,13 @@ PHONY += $(vmlinux-dirs) $(vmlinux-dirs): prepare scripts $(Q)$(MAKE) $(build)=$@ -# Store (new) KERNELRELASE string in include/config/kernel.release +define filechk_kernel.release + echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" +endef + +# Store (new) KERNELRELEASE string in include/config/kernel.release include/config/kernel.release: include/config/auto.conf FORCE - $(Q)rm -f $@ - $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@ + $(call filechk,kernel.release) # Things we need to do before we recursively start building the kernel @@ -796,8 +925,8 @@ prepare3: include/config/kernel.release ifneq ($(KBUILD_SRC),) @$(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.";\ + echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ + echo >&2 " in the '$(srctree)' directory.";\ /bin/false; \ fi; endif @@ -805,7 +934,7 @@ endif # prepare2 creates a makefile if using a separate output directory prepare2: prepare3 outputmakefile asm-generic -prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \ +prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ include/config/auto.conf $(cmd_crmodverdir) @@ -838,7 +967,7 @@ define filechk_version.h echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) endef -include/linux/version.h: $(srctree)/Makefile FORCE +$(version_h): $(srctree)/Makefile FORCE $(call filechk,version.h) include/generated/utsrelease.h: include/config/kernel.release FORCE @@ -883,7 +1012,7 @@ PHONY += archscripts archscripts: PHONY += __headers -__headers: include/linux/version.h scripts_basic asm-generic archheaders archscripts FORCE +__headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE $(Q)$(MAKE) $(build)=scripts build_unifdef PHONY += headers_install_all @@ -892,10 +1021,10 @@ headers_install_all: PHONY += headers_install headers_install: __headers - $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \ - $(error Headers not exportable for the $(SRCARCH) architecture)) - $(Q)$(MAKE) $(hdr-inst)=include - $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) + $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ + $(error Headers not exportable for the $(SRCARCH) architecture)) + $(Q)$(MAKE) $(hdr-inst)=include/uapi + $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) PHONY += headers_check_all headers_check_all: headers_install_all @@ -903,8 +1032,8 @@ headers_check_all: headers_install_all PHONY += headers_check headers_check: headers_install - $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 - $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1 + $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 + $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 # --------------------------------------------------------------------------- # Modules @@ -915,11 +1044,11 @@ ifdef CONFIG_MODULES all: modules -# Build modules +# Build modules # -# A module can be listed more than once in obj-m resulting in -# duplicate lines in modules.order files. Those are removed -# using awk while concatenating to the final file. +# A module can be listed more than once in obj-m resulting in +# duplicate lines in modules.order files. Those are removed +# using awk while concatenating to the final file. PHONY += modules modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin @@ -948,10 +1077,10 @@ _modinst_: @rm -rf $(MODLIB)/kernel @rm -f $(MODLIB)/source @mkdir -p $(MODLIB)/kernel - @ln -s $(srctree) $(MODLIB)/source + @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ rm -f $(MODLIB)/build ; \ - ln -s $(objtree) $(MODLIB)/build ; \ + ln -s $(CURDIR) $(MODLIB)/build ; \ fi @cp -f $(objtree)/modules.order $(MODLIB)/ @cp -f $(objtree)/modules.builtin $(MODLIB)/ @@ -965,17 +1094,23 @@ _modinst_post: _modinst_ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst $(call cmd,depmod) +ifeq ($(CONFIG_MODULE_SIG), y) +PHONY += modules_sign +modules_sign: + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign +endif + else # CONFIG_MODULES # Modules not configured # --------------------------------------------------------------------------- modules modules_install: FORCE - @echo - @echo "The present kernel configuration has modules disabled." - @echo "Type 'make config' and enable loadable module support." - @echo "Then build a kernel with module support enabled." - @echo + @echo >&2 + @echo >&2 "The present kernel configuration has modules disabled." + @echo >&2 "Type 'make config' and enable loadable module support." + @echo >&2 "Then build a kernel with module support enabled." + @echo >&2 @exit 1 endif # CONFIG_MODULES @@ -992,10 +1127,12 @@ CLEAN_DIRS += $(MODVERDIR) # Directories & files removed with 'make mrproper' MRPROPER_DIRS += include/config usr/include include/generated \ - arch/*/include/generated -MRPROPER_FILES += .config .config.old .version .old_version \ - include/linux/version.h \ - Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS + arch/*/include/generated .tmp_objdiff +MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ + Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ + signing_key.priv signing_key.x509 x509.genkey \ + extra_certificates signing_key.x509.keyid \ + signing_key.x509.signer include/linux/version.h # clean - Delete most, but leave enough to build external modules # @@ -1003,11 +1140,14 @@ clean: rm-dirs := $(CLEAN_DIRS) clean: rm-files := $(CLEAN_FILES) clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) -PHONY += $(clean-dirs) clean archclean +PHONY += $(clean-dirs) clean archclean vmlinuxclean $(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) -clean: archclean +vmlinuxclean: + $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean + +clean: archclean vmlinuxclean # mrproper - Delete all generated files, including .config # @@ -1031,15 +1171,14 @@ distclean: mrproper @find $(srctree) $(RCS_FIND_IGNORE) \ \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ - -o -name '.*.rej' \ - -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ + -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ -type f -print | xargs rm -f # Packaging of the kernel to various formats # --------------------------------------------------------------------------- # rpm target kept for backward compatibility -package-dir := $(srctree)/scripts/package +package-dir := scripts/package %src-pkg: FORCE $(Q)$(MAKE) $(build)=$(package-dir) $@ @@ -1085,6 +1224,7 @@ help: @echo ' gtags - Generate GNU GLOBAL index' @echo ' kernelrelease - Output the release version string' @echo ' kernelversion - Output the version stored in Makefile' + @echo ' image_name - Output the image name' @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ echo ' (default: $(INSTALL_HDR_PATH))'; \ echo '' @@ -1234,11 +1374,11 @@ scripts: ; endif # KBUILD_EXTMOD clean: $(clean-dirs) - $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean $(call cmd,rmdirs) $(call cmd,rmfiles) @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ + -o -name '*.ko.*' \ -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ -o -name '*.symtypes' -o -name 'modules.order' \ -o -name modules.builtin -o -name '.tmp_*.o.*' \ @@ -1279,7 +1419,7 @@ export_report: endif #ifeq ($(config-targets),1) endif #ifeq ($(mixed-targets),1) -PHONY += checkstack kernelrelease kernelversion +PHONY += checkstack kernelrelease kernelversion image_name # UML needs a little special treatment here. It wants to use the host # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone @@ -1300,12 +1440,17 @@ kernelrelease: kernelversion: @echo $(KERNELVERSION) +image_name: + @echo $(KBUILD_IMAGE) + # Clear a bunch of variables before executing the submake tools/: FORCE - $(Q)$(MAKE) LDFLAGS= MAKEFLAGS= -C $(src)/tools/ + $(Q)mkdir -p $(objtree)/tools + $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ tools/%: FORCE - $(Q)$(MAKE) LDFLAGS= MAKEFLAGS= -C $(src)/tools/ $* + $(Q)mkdir -p $(objtree)/tools + $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* # Single targets # --------------------------------------------------------------------------- @@ -1356,7 +1501,7 @@ endif $(build)=$(build-dir) $(@:.ko=.o) $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost -# FIXME Should go into a make.lib or something +# FIXME Should go into a make.lib or something # =========================================================================== quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) @@ -1368,7 +1513,7 @@ quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)) # Run depmod only if we have System.map and depmod is executable quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ - $(KERNELRELEASE) + $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" # Create temporary dir for module support files # clean it up only when building all modules |