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# SPDX-License-Identifier: GPL-2.0 |
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VERSION = 4 |
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PATCHLEVEL = 15 |
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SUBLEVEL = 0 |
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EXTRAVERSION = -rc4 |
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NAME = Fearless Coyote |
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# *DOCUMENTATION* # To see a list of typical targets execute "make help" # More info can be located in ./README # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. |
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# That's our default target when none is given on the command line PHONY := _all _all: |
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# o Do not use make's built-in rules and variables # (this increases performance and avoids hard-to-debug behaviour); # o Look for make include files relative to root of kernel src MAKEFLAGS += -rR --include-dir=$(CURDIR) |
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# Avoid funny character set dependencies |
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unexport LC_ALL |
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LC_COLLATE=C LC_NUMERIC=C |
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export LC_COLLATE LC_NUMERIC |
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# Avoid interference with shell env settings unexport GREP_OPTIONS |
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# We are using a recursive build, so we need to do a little thinking # to get the ordering right. # # Most importantly: sub-Makefiles should only ever modify files in # their own directory. If in some directory we have a dependency on # a file in another dir (which doesn't happen often, but it's often # unavoidable when linking the built-in.o targets which finally # turn into vmlinux), we will call a sub make in that other dir, and # after that we are sure that everything which is in that other dir # is now up to date. # # The only cases where we need to modify files which have global # effects are thus separated out and done before the recursive # descending is started. They are now explicitly listed as the # prepare rule. |
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# 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 $@ :< # # If KBUILD_VERBOSE equals 0 then the above command will be hidden. # If KBUILD_VERBOSE equals 1 then the above command is displayed. # |
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# To put more focus on warnings, be less verbose as default # Use 'make V=1' to see the full commands |
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ifeq ("$(origin V)", "command line") KBUILD_VERBOSE = $(V) |
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endif ifndef KBUILD_VERBOSE KBUILD_VERBOSE = 0 endif |
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ifeq ($(KBUILD_VERBOSE),1) quiet = Q = else quiet=quiet_ Q = @ endif # If the user is running make -s (silent mode), suppress echoing of # commands |
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ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) |
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quiet=silent_ |
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tools_silent=s |
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endif |
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export quiet Q KBUILD_VERBOSE |
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# kbuild supports saving output files in a separate directory. # To locate output files in a separate directory two syntaxes are supported. # In both cases the working directory must be the root of the kernel src. # 1) O= # Use "make O=dir/to/store/output/files/" |
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# |
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# 2) Set KBUILD_OUTPUT # Set the environment variable KBUILD_OUTPUT to point to the directory # where the output files shall be placed. # export KBUILD_OUTPUT=dir/to/store/output/files/ # make # # The O= assignment takes precedence over the KBUILD_OUTPUT environment # variable. |
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# KBUILD_SRC is not intended to be used by the regular user (for now), # it is set on invocation of make with KBUILD_OUTPUT or O= specified. |
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ifeq ($(KBUILD_SRC),) # OK, Make called in directory where kernel src resides # Do we want to locate output files in a separate directory? |
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ifeq ("$(origin O)", "command line") KBUILD_OUTPUT := $(O) |
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endif |
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# Cancel implicit rules on top Makefile $(CURDIR)/Makefile Makefile: ; |
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ifneq ($(words $(subst :, ,$(CURDIR))), 1) $(error main directory cannot contain spaces nor colons) endif |
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ifneq ($(KBUILD_OUTPUT),) |
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# check that the output directory actually exists saved-output := $(KBUILD_OUTPUT) |
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KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ |
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&& pwd) |
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$(if $(KBUILD_OUTPUT),, \ |
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$(error failed to create output directory "$(saved-output)")) |
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PHONY += $(MAKECMDGOALS) sub-make |
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$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
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@: |
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# Invoke a second make in the output directory, passing relevant variables |
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sub-make: |
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$(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ |
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-f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) |
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# Leave processing to above invocation of make skip-makefile := 1 endif # ifneq ($(KBUILD_OUTPUT),) endif # ifeq ($(KBUILD_SRC),) # We process the rest of the Makefile if this is the final invocation of make ifeq ($(skip-makefile),) |
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# Do not print "Entering directory ...", # but we want to display it when entering to the output directory # so that IDEs/editors are able to understand relative filenames. MAKEFLAGS += --no-print-directory |
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# Call a source code checker (by default, "sparse") as part of the # C compilation. # # Use 'make C=1' to enable checking of only re-compiled files. # Use 'make C=2' to enable checking of *all* source files, regardless # of whether they are re-compiled or not. # |
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# See the file "Documentation/dev-tools/sparse.rst" for more details, # including where to get the "sparse" utility. |
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ifeq ("$(origin C)", "command line") KBUILD_CHECKSRC = $(C) endif ifndef KBUILD_CHECKSRC KBUILD_CHECKSRC = 0 endif # Use make M=dir to specify directory of external module to build # Old syntax make ... SUBDIRS=$PWD is still supported # Setting the environment variable KBUILD_EXTMOD take precedence ifdef SUBDIRS KBUILD_EXTMOD ?= $(SUBDIRS) endif ifeq ("$(origin M)", "command line") KBUILD_EXTMOD := $(M) endif |
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ifeq ($(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 |
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export KBUILD_CHECKSRC KBUILD_EXTMOD KBUILD_SRC |
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objtree := . |
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src := $(srctree) obj := $(objtree) |
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VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
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export srctree objtree VPATH |
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# 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 # It is allowed to specify more targets when calling make, including # mixing *config targets and build targets. # For example 'make oldconfig all'. # 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 old_version_h := include/linux/version.h no-dot-config-targets := clean mrproper distclean \ cscope gtags TAGS tags help% %docs check% coccicheck \ $(version_h) headers_% archheaders archscripts \ kernelversion %src-pkg config-targets := 0 mixed-targets := 0 dot-config := 1 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) dot-config := 0 endif endif ifeq ($(KBUILD_EXTMOD),) ifneq ($(filter config %config,$(MAKECMDGOALS)),) config-targets := 1 ifneq ($(words $(MAKECMDGOALS)),1) mixed-targets := 1 endif endif endif # install and modules_install need also be processed one by one ifneq ($(filter install,$(MAKECMDGOALS)),) ifneq ($(filter modules_install,$(MAKECMDGOALS)),) mixed-targets := 1 endif endif ifeq ($(mixed-targets),1) # =========================================================================== # We're called with mixed targets (*config and build targets). # Handle them one by one. 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 # We need some generic definitions (do not try to remake the file). scripts/Kbuild.include: ; include scripts/Kbuild.include # Read KERNELRELEASE from include/config/kernel.release (if it exists) KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
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# 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, |
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# then ARCH is assigned, getting whatever value it gets normally, and |
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# SUBARCH is subsequently ignored. |
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SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ -e s/sun4u/sparc64/ \ |
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-e s/arm.*/arm/ -e s/sa110/arm/ \ |
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-e s/s390x/s390/ -e s/parisc64/parisc/ \ |
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-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
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-e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \ -e s/riscv.*/riscv/) |
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# Cross compiling and selecting different set of gcc/bin-utils # --------------------------------------------------------------------------- # # When performing cross compilation for other architectures ARCH shall be set # to the target architecture. (See arch/* for the possibilities). # ARCH can be set during invocation of make: # make ARCH=ia64 # Another way is to have ARCH set in the environment. # The default ARCH is the host where make is executed. # CROSS_COMPILE specify the prefix used for all executables used # during compilation. Only gcc and related bin-utils executables # are prefixed with $(CROSS_COMPILE). # CROSS_COMPILE can be set on the command line # make CROSS_COMPILE=ia64-linux- # Alternatively CROSS_COMPILE can be set in the environment. |
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# A third alternative is to store a setting in .config so that plain # "make" in the configured kernel build directory always uses that. |
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# Default value for CROSS_COMPILE is not to prefix executables # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
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ARCH ?= $(SUBARCH) |
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CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
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# Architecture as present in compile.h |
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UTS_MACHINE := $(ARCH) SRCARCH := $(ARCH) |
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# Additional ARCH settings for x86 ifeq ($(ARCH),i386) SRCARCH := x86 endif ifeq ($(ARCH),x86_64) SRCARCH := x86 endif |
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# Additional ARCH settings for sparc |
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ifeq ($(ARCH),sparc32) SRCARCH := sparc endif |
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ifeq ($(ARCH),sparc64) |
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SRCARCH := sparc |
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endif |
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# Additional ARCH settings for sh ifeq ($(ARCH),sh64) SRCARCH := sh endif |
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# Additional ARCH settings for tile |
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ifeq ($(ARCH),tilepro) SRCARCH := tile endif |
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ifeq ($(ARCH),tilegx) SRCARCH := tile endif |
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KCONFIG_CONFIG ?= .config |
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export KCONFIG_CONFIG |
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# SHELL used by kbuild CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ else if [ -x /bin/bash ]; then echo /bin/bash; \ else echo sh; fi ; fi) |
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HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS) HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS) HOST_LFS_LIBS := $(shell getconf LFS_LIBS) |
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HOSTCC = gcc HOSTCXX = g++ |
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HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) HOST_LOADLIBES := $(HOST_LFS_LIBS) |
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# Make variables (CC, etc...) |
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AS = $(CROSS_COMPILE)as LD = $(CROSS_COMPILE)ld CC = $(CROSS_COMPILE)gcc CPP = $(CC) -E AR = $(CROSS_COMPILE)ar NM = $(CROSS_COMPILE)nm STRIP = $(CROSS_COMPILE)strip OBJCOPY = $(CROSS_COMPILE)objcopy OBJDUMP = $(CROSS_COMPILE)objdump AWK = awk GENKSYMS = scripts/genksyms/genksyms |
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INSTALLKERNEL := installkernel |
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DEPMOD = /sbin/depmod |
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PERL = perl |
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PYTHON = python |
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CHECK = sparse |
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CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void $(CF) |
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NOSTDINC_FLAGS = |
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CFLAGS_MODULE = AFLAGS_MODULE = LDFLAGS_MODULE = |
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CFLAGS_KERNEL = AFLAGS_KERNEL = |
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LDFLAGS_vmlinux = |
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# Use USERINCLUDE when you must reference the UAPI directories only. USERINCLUDE := \ |
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-I$(srctree)/arch/$(SRCARCH)/include/uapi \ -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ |
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-I$(srctree)/include/uapi \ |
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-I$(objtree)/include/generated/uapi \ |
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-include $(srctree)/include/linux/kconfig.h |
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# Use LINUXINCLUDE when you must reference the include/ directory. # Needed to be compatible with the O= option |
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LINUXINCLUDE := \ |
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-I$(srctree)/arch/$(SRCARCH)/include \ -I$(objtree)/arch/$(SRCARCH)/include/generated \ |
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$(if $(KBUILD_SRC), -I$(srctree)/include) \ |
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-I$(objtree)/include \ $(USERINCLUDE) |
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KBUILD_AFLAGS := -D__ASSEMBLY__ |
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KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
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-fno-strict-aliasing -fno-common -fshort-wchar \ |
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-Werror-implicit-function-declaration \ |
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-Wno-format-security \ |
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-std=gnu89 KBUILD_CPPFLAGS := -D__KERNEL__ |
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KBUILD_AFLAGS_KERNEL := KBUILD_CFLAGS_KERNEL := |
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KBUILD_AFLAGS_MODULE := -DMODULE KBUILD_CFLAGS_MODULE := -DMODULE KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds |
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GCC_PLUGINS_CFLAGS := |
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export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
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export CPP AR NM STRIP OBJCOPY OBJDUMP HOSTLDFLAGS HOST_LOADLIBES |
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export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE |
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export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
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export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
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export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_KASAN CFLAGS_UBSAN |
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export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
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export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
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export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
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export KBUILD_ARFLAGS |
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# When compiling out-of-tree modules, put MODVERDIR in the module # tree rather than in the kernel tree. The kernel tree might # even be read-only. export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
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# Files to ignore in find ... statements |
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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 |
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export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ --exclude CVS --exclude .pc --exclude .hg --exclude .git |
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# =========================================================================== # Rules shared between *config targets and build targets |
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# Basic helpers built in scripts/basic/ |
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PHONY += scripts_basic |
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scripts_basic: $(Q)$(MAKE) $(build)=scripts/basic |
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$(Q)rm -f .tmp_quiet_recordmcount |
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# To avoid any implicit rule to kick in, define an empty command. scripts/basic/%: scripts_basic ; |
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PHONY += outputmakefile |
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# outputmakefile generates a Makefile in the output directory, if using a # separate output directory. This allows convenient use of make in the # output directory. |
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outputmakefile: |
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ifneq ($(KBUILD_SRC),) |
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$(Q)ln -fsn $(srctree) source |
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) endif |
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ifeq ($(cc-name),clang) ifneq ($(CROSS_COMPILE),) CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%)) GCC_TOOLCHAIN := $(realpath $(dir $(shell which $(LD)))/..) endif ifneq ($(GCC_TOOLCHAIN),) CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN) endif KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) KBUILD_CFLAGS += $(call cc-disable-warning, gnu) KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) # 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,) KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) else # These warnings generated too much noise in a regular build. # Use make W=1 to enable them (see scripts/Makefile.extrawarn) KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) endif |
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ifeq ($(config-targets),1) # =========================================================================== # *config targets only - make sure prerequisites are updated, and descend # in scripts/kconfig to make the *config target # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. # KBUILD_DEFCONFIG may point out an alternative default configuration # used for 'make defconfig' |
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|
486 |
include arch/$(SRCARCH)/Makefile |
61bee2044
|
487 |
export KBUILD_DEFCONFIG KBUILD_KCONFIG |
1da177e4c
|
488 |
|
31110ebbe
|
489 |
config: scripts_basic outputmakefile FORCE |
31110ebbe
|
490 491 492 |
$(Q)$(MAKE) $(build)=scripts/kconfig $@ %config: scripts_basic outputmakefile FORCE |
1da177e4c
|
493 494 495 496 497 498 |
$(Q)$(MAKE) $(build)=scripts/kconfig $@ else # =========================================================================== # Build targets only - this includes vmlinux, arch specific targets, clean # targets and others. In general all targets except *config targets. |
2c1f4f125
|
499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 |
# If building an external module we do not care about the all: rule # but instead _all depend on modules PHONY += all ifeq ($(KBUILD_EXTMOD),) _all: all else _all: modules 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. ifeq ($(MAKECMDGOALS),modules) KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) endif # If we have "make <whatever> modules", compile modules # in addition to whatever we do anyway. # Just "make" or "make all" shall build modules as well ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) KBUILD_MODULES := 1 endif ifeq ($(MAKECMDGOALS),) KBUILD_MODULES := 1 endif export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4c
|
536 537 538 |
ifeq ($(KBUILD_EXTMOD),) # Additional helpers built in scripts/ # Carefully list dependencies so we do not try to build scripts twice |
070b98bfd
|
539 |
# in parallel |
4f1933620
|
540 |
PHONY += scripts |
a54292f58
|
541 |
scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
6b90bd4ba
|
542 |
asm-generic gcc-plugins |
1da177e4c
|
543 |
$(Q)$(MAKE) $(build)=$(@) |
1da177e4c
|
544 545 |
# Objects we will link into vmlinux / subdirs we need to visit init-y := init/ |
df85b2d76
|
546 |
drivers-y := drivers/ sound/ firmware/ |
1da177e4c
|
547 548 549 |
net-y := net/ libs-y := lib/ core-y := usr/ |
37d9fe478
|
550 |
virt-y := virt/ |
1da177e4c
|
551 552 553 |
endif # KBUILD_EXTMOD ifeq ($(dot-config),1) |
9ee4e3365
|
554 555 |
# Read in config -include include/config/auto.conf |
1da177e4c
|
556 |
|
9ee4e3365
|
557 |
ifeq ($(KBUILD_EXTMOD),) |
1da177e4c
|
558 559 |
# Read in dependencies to all Kconfig* files, make sure to run # oldconfig if changes are detected. |
c955ccafc
|
560 |
-include include/config/auto.conf.cmd |
1da177e4c
|
561 |
|
1da177e4c
|
562 |
# To avoid any implicit rule to kick in, define an empty command |
14cdd3c40
|
563 |
$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4c
|
564 |
|
c955ccafc
|
565 |
# If .config is newer than include/config/auto.conf, someone tinkered |
752625cff
|
566 |
# with it and forgot to run make oldconfig. |
070b98bfd
|
567 |
# if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cff
|
568 |
# we execute the config step to be sure to catch updated Kconfig files |
bc081dd6e
|
569 |
include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4c
|
570 571 |
$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig else |
264a26838
|
572 |
# external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e3365
|
573 574 575 576 |
# but do not care if they are up-to-date. Use auto.conf to trigger the test PHONY += include/config/auto.conf include/config/auto.conf: |
264a26838
|
577 |
$(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
5369f5502
|
578 579 580 581 582 |
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 ; \ |
9ee4e3365
|
583 584 585 |
/bin/false) endif # KBUILD_EXTMOD |
c955ccafc
|
586 |
|
1da177e4c
|
587 588 |
else # Dummy target needed, because used as prerequisite |
c955ccafc
|
589 |
include/config/auto.conf: ; |
9ee4e3365
|
590 |
endif # $(dot-config) |
1da177e4c
|
591 |
|
865563924
|
592 593 594 595 596 597 |
# For the kernel to actually contain only the needed exported symbols, # we have to build modules as well to determine what those symbols are. # (this can be evaluated only once include/config/auto.conf has been included) ifdef CONFIG_TRIM_UNUSED_KSYMS KBUILD_MODULES := 1 endif |
1da177e4c
|
598 599 600 |
# 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 |
c84471614
|
601 |
# Defaults to vmlinux, but the arch makefile usually adds further targets |
1da177e4c
|
602 |
all: vmlinux |
433dc2ebe
|
603 604 605 |
KBUILD_CFLAGS += $(call cc-option,-fno-PIE) KBUILD_AFLAGS += $(call cc-option,-fno-PIE) CFLAGS_GCOV := -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,) |
433dc2ebe
|
606 |
export CFLAGS_GCOV CFLAGS_KCOV |
6dd3f13e4
|
607 608 609 610 611 |
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default # values of the respective KBUILD_* variables ARCH_CPPFLAGS := ARCH_AFLAGS := ARCH_CFLAGS := |
a436bb7b8
|
612 |
include arch/$(SRCARCH)/Makefile |
a1c48bb16
|
613 614 |
KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) |
ef6000b4c
|
615 |
KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) |
bd664f6b3
|
616 617 618 |
KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context) |
a1c48bb16
|
619 |
|
1da177e4c
|
620 |
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
6748cb3c2
|
621 622 |
KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) |
1da177e4c
|
623 |
else |
815eb71e7
|
624 |
ifdef CONFIG_PROFILE_ALL_BRANCHES |
a76bcf557
|
625 |
KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) |
815eb71e7
|
626 627 628 |
else KBUILD_CFLAGS += -O2 endif |
1da177e4c
|
629 |
endif |
a76bcf557
|
630 631 |
KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \ $(call cc-disable-warning,maybe-uninitialized,)) |
69102311a
|
632 633 |
# Tell gcc to never replace conditional load with a non-conditional one KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) |
7292ae3d5
|
634 |
# check for 'asm goto' |
4e5620713
|
635 |
ifeq ($(call shell-cached,$(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y) |
7292ae3d5
|
636 637 638 |
KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO endif |
d677a4d60
|
639 |
include scripts/Makefile.kcov |
6b90bd4ba
|
640 |
include scripts/Makefile.gcc-plugins |
1873e870f
|
641 642 643 644 645 646 647 648 649 |
ifdef CONFIG_READABLE_ASM # Disable optimizations that make assembler listings hard to read. # reorder blocks reorders the control in the function # ipa clone creates specialized cloned functions # partial inlining inlines only parts of functions KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ $(call cc-option,-fno-ipa-cp-clone,) \ $(call cc-option,-fno-partial-inlining) endif |
08f67461c
|
650 |
ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e0
|
651 652 |
KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) endif |
c965b105b
|
653 654 655 |
# This selects the stack protector compiler flag. Testing it is delayed # until after .config has been reprocessed, in the prepare-compiler-check # target. |
8779657d2
|
656 |
ifdef CONFIG_CC_STACKPROTECTOR_REGULAR |
19952a920
|
657 |
stackp-flag := -fstack-protector |
c965b105b
|
658 |
stackp-name := REGULAR |
6c15b327c
|
659 660 |
else ifdef CONFIG_CC_STACKPROTECTOR_STRONG |
8779657d2
|
661 |
stackp-flag := -fstack-protector-strong |
c965b105b
|
662 |
stackp-name := STRONG |
19952a920
|
663 664 665 |
else # Force off for distro compilers that enable stack protector by default. stackp-flag := $(call cc-option, -fno-stack-protector) |
5d707e9c8
|
666 |
endif |
6c15b327c
|
667 |
endif |
c965b105b
|
668 669 |
# Find arch-specific stack protector compiler sanity-checking script. ifdef CONFIG_CC_STACKPROTECTOR |
228d96c60
|
670 671 |
stackp-path := $(srctree)/scripts/gcc-$(SRCARCH)_$(BITS)-has-stack-protector.sh stackp-check := $(wildcard $(stackp-path)) |
c965b105b
|
672 |
endif |
19952a920
|
673 |
KBUILD_CFLAGS += $(stackp-flag) |
e06b8b98d
|
674 |
|
1da177e4c
|
675 |
ifdef CONFIG_FRAME_POINTER |
a0f97e06a
|
676 |
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4c
|
677 |
else |
7e9501fde
|
678 679 680 681 682 683 |
# Some targets (ARM with Thumb2, for example), can't be built with frame # pointers. For those, we don't have FUNCTION_TRACER automatically # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is # incompatible with -fomit-frame-pointer with current GCC, so we don't use # -fomit-frame-pointer with FUNCTION_TRACER. ifndef CONFIG_FUNCTION_TRACER |
a0f97e06a
|
684 |
KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4c
|
685 |
endif |
7e9501fde
|
686 |
endif |
1da177e4c
|
687 |
|
2062afb4f
|
688 |
KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) |
1da177e4c
|
689 |
ifdef CONFIG_DEBUG_INFO |
866ced950
|
690 691 692 |
ifdef CONFIG_DEBUG_INFO_SPLIT KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) else |
a0f97e06a
|
693 |
KBUILD_CFLAGS += -g |
866ced950
|
694 |
endif |
2288328ce
|
695 |
KBUILD_AFLAGS += -Wa,-gdwarf-2 |
1da177e4c
|
696 |
endif |
bfaf2dd35
|
697 698 699 |
ifdef CONFIG_DEBUG_INFO_DWARF4 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) endif |
1da177e4c
|
700 |
|
d6f4ceb79
|
701 |
ifdef CONFIG_DEBUG_INFO_REDUCED |
e82c4bb8b
|
702 703 |
KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ $(call cc-option,-fno-var-tracking) |
d6f4ceb79
|
704 |
endif |
606576ce8
|
705 |
ifdef CONFIG_FUNCTION_TRACER |
c0a80c0c2
|
706 707 708 709 |
ifndef CC_FLAGS_FTRACE CC_FLAGS_FTRACE := -pg endif export CC_FLAGS_FTRACE |
a2546fae0
|
710 711 712 |
ifdef CONFIG_HAVE_FENTRY CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) endif |
c0a80c0c2
|
713 |
KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) |
a2546fae0
|
714 |
KBUILD_AFLAGS += $(CC_USING_FENTRY) |
72441cb1f
|
715 |
ifdef CONFIG_DYNAMIC_FTRACE |
cf4db2597
|
716 |
ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1f
|
717 718 719 720 |
BUILD_C_RECORDMCOUNT := y export BUILD_C_RECORDMCOUNT endif endif |
16444a8a4
|
721 |
endif |
91341d4b2
|
722 723 724 725 |
# We trigger additional mismatches with less inlining ifdef CONFIG_DEBUG_SECTION_MISMATCH KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) endif |
90ad4052e
|
726 727 728 729 |
ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,) KBUILD_CFLAGS += $(call cc-option,-fdata-sections,) endif |
e8e699317
|
730 |
# arch Makefile may override CC so keep this after arch Makefile is included |
4e5620713
|
731 |
NOSTDINC_FLAGS += -nostdinc -isystem $(call shell-cached,$(CC) -print-file-name=include) |
e8e699317
|
732 |
CHECKFLAGS += $(NOSTDINC_FLAGS) |
1da177e4c
|
733 |
# warn about C99 declaration after statement |
a0f97e06a
|
734 |
KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4c
|
735 |
|
070b98bfd
|
736 |
# disable pointer signed / unsigned warnings in gcc 4.0 |
8417da6f2
|
737 |
KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
1da177e4c
|
738 |
|
fe8d0a410
|
739 |
# disable invalid "can't wrap" optimizations for signed / pointers |
a137802ee
|
740 |
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552c
|
741 |
|
8f7f5c9fc
|
742 743 |
# conserve stack if available KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
809704721
|
744 745 746 747 748 |
# 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) |
fe7c36c7b
|
749 750 |
# Prohibit date/time macros, which would make the build non-deterministic KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) |
ea8daa7b9
|
751 752 |
# enforce correct pointer usage KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) |
c834f0e8a
|
753 754 |
# Require designated initializers for all marked structures KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) |
40df759e2
|
755 756 |
# use the deterministic mode of AR if available KBUILD_ARFLAGS := $(call ar-option,D) |
a436bb7b8
|
757 758 |
include scripts/Makefile.kasan include scripts/Makefile.extrawarn |
c6d308534
|
759 |
include scripts/Makefile.ubsan |
a86fe3537
|
760 |
|
61754c187
|
761 762 763 764 765 |
# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the # last assignments KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) |
52bcc3308
|
766 |
|
18991197b
|
767 |
# Use --build-id when available. |
bd74370b8
|
768 |
LDFLAGS_BUILD_ID := $(patsubst -Wl$(comma)%,%,\ |
f86fd3066
|
769 |
$(call cc-ldoption, -Wl$(comma)--build-id,)) |
6588169d5
|
770 |
KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
18991197b
|
771 |
LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
b67067f11
|
772 773 774 |
ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION LDFLAGS_vmlinux += $(call ld-option, --gc-sections,) endif |
5d7d18f5b
|
775 |
ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a27195
|
776 |
LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5b
|
777 |
endif |
1da177e4c
|
778 |
# Default kernel image to build when no specific target is given. |
070b98bfd
|
779 |
# KBUILD_IMAGE may be overruled on the command line or |
1da177e4c
|
780 781 782 783 784 785 786 787 788 789 790 |
# set in the environment # Also any assignments in arch/$(ARCH)/Makefile take precedence over # this default value export KBUILD_IMAGE ?= vmlinux # # INSTALL_PATH specifies where to place the updated kernel and system map # images. Default is /boot, but you can set it to other values export INSTALL_PATH ?= /boot # |
f4d4ffc03
|
791 792 793 794 795 796 797 |
# 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) # |
1da177e4c
|
798 799 |
# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory # relocations required by build roots. This is not defined in the |
070b98bfd
|
800 |
# makefile but the argument can be passed to make if needed. |
1da177e4c
|
801 |
# |
df9df036d
|
802 |
MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4c
|
803 |
export MODLIB |
ac031f26e
|
804 |
# |
3fbb43df9
|
805 806 807 808 |
# 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. |
2ea038917
|
809 |
|
ac031f26e
|
810 811 |
ifdef INSTALL_MOD_STRIP ifeq ($(INSTALL_MOD_STRIP),1) |
2ea038917
|
812 |
mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26e
|
813 |
else |
2ea038917
|
814 |
mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26e
|
815 816 |
endif # INSTALL_MOD_STRIP=1 else |
2ea038917
|
817 |
mod_strip_cmd = true |
ac031f26e
|
818 819 |
endif # INSTALL_MOD_STRIP export mod_strip_cmd |
beb50df39
|
820 821 822 823 824 825 826 |
# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP # or CONFIG_MODULE_COMPRESS_XZ. mod_compress_cmd = true ifdef CONFIG_MODULE_COMPRESS ifdef CONFIG_MODULE_COMPRESS_GZIP |
3d1450d54
|
827 |
mod_compress_cmd = gzip -n -f |
beb50df39
|
828 829 |
endif # CONFIG_MODULE_COMPRESS_GZIP ifdef CONFIG_MODULE_COMPRESS_XZ |
3d1450d54
|
830 |
mod_compress_cmd = xz -f |
beb50df39
|
831 832 833 |
endif # CONFIG_MODULE_COMPRESS_XZ endif # CONFIG_MODULE_COMPRESS export mod_compress_cmd |
1bf49dd4b
|
834 835 836 |
# Select initial ramdisk compression format, default is gzip(1). # This shall be used by the dracut(8) tool while creating an initramfs image. # |
7ac181568
|
837 838 839 840 841 842 |
INITRD_COMPRESS-y := gzip INITRD_COMPRESS-$(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 |
b7000adef
|
843 844 845 |
# do not export INITRD_COMPRESS, since we didn't actually # choose a sane default compression above. # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) |
1da177e4c
|
846 |
|
d9d8d7ed4
|
847 |
ifdef CONFIG_MODULE_SIG_ALL |
3ee550f12
|
848 849 850 |
$(eval $(call config_filename,MODULE_SIG_KEY)) mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 |
e2a666d52
|
851 852 853 854 |
else mod_sign_cmd = true endif export mod_sign_cmd |
9f0c18aec
|
855 856 857 858 859 860 |
ifdef CONFIG_STACK_VALIDATION has_libelf := $(call try-run,\ echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0) ifeq ($(has_libelf),1) objtool_target := tools/objtool FORCE else |
11af84744
|
861 862 |
ifdef CONFIG_UNWINDER_ORC $(error "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel") |
3dd40cb32
|
863 864 865 |
else $(warning "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel") endif |
9f0c18aec
|
866 867 868 869 |
SKIP_STACK_VALIDATION := 1 export SKIP_STACK_VALIDATION endif endif |
e2a666d52
|
870 |
|
1da177e4c
|
871 |
ifeq ($(KBUILD_EXTMOD),) |
cfc411e7f
|
872 |
core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4c
|
873 874 875 |
vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
37d9fe478
|
876 |
$(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) |
1da177e4c
|
877 878 |
vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
37d9fe478
|
879 |
$(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) |
1da177e4c
|
880 881 882 883 884 885 |
init-y := $(patsubst %/, %/built-in.o, $(init-y)) core-y := $(patsubst %/, %/built-in.o, $(core-y)) drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) net-y := $(patsubst %/, %/built-in.o, $(net-y)) libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
3a166fc2d
|
886 |
libs-y2 := $(filter-out %.a, $(patsubst %/, %/built-in.o, $(libs-y))) |
37d9fe478
|
887 |
virt-y := $(patsubst %/, %/built-in.o, $(virt-y)) |
1da177e4c
|
888 |
|
1f2bfbd00
|
889 |
# Externally visible symbols (used by link-vmlinux.sh) |
956985705
|
890 |
export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
3a166fc2d
|
891 892 |
export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-y) export KBUILD_VMLINUX_LIBS := $(libs-y1) |
956985705
|
893 |
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
1f2bfbd00
|
894 |
export LDFLAGS_vmlinux |
312a3d091
|
895 |
# used by scripts/package/Makefile |
37d9fe478
|
896 |
export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) |
9bb482476
|
897 |
|
3a166fc2d
|
898 |
vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS) |
1da177e4c
|
899 |
|
2441e78b1
|
900 901 902 903 904 |
# Include targets which we want to execute sequentially if the rest of the # kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be # evaluated more than once. PHONY += vmlinux_prereq vmlinux_prereq: $(vmlinux-deps) FORCE |
0f836e5fe
|
905 |
ifdef CONFIG_HEADERS_CHECK |
0e7af8d04
|
906 |
$(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
0f836e5fe
|
907 |
endif |
3ee7b3fa2
|
908 |
ifdef CONFIG_GDB_SCRIPTS |
8e9b46679
|
909 |
$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) |
3ee7b3fa2
|
910 |
endif |
2441e78b1
|
911 |
ifdef CONFIG_TRIM_UNUSED_KSYMS |
ba79d401f
|
912 |
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ |
865563924
|
913 |
"$(MAKE) -f $(srctree)/Makefile vmlinux" |
2441e78b1
|
914 |
endif |
23121ca2b
|
915 916 917 |
# standalone target for easier testing include/generated/autoksyms.h: FORCE |
ba79d401f
|
918 |
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true |
23121ca2b
|
919 |
|
fbe6e37da
|
920 921 922 |
ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) # Final link of vmlinux with optional arch pass after final link |
312a3d091
|
923 924 |
cmd_link-vmlinux = \ $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ; \ |
fbe6e37da
|
925 |
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) |
2441e78b1
|
926 |
|
edf69470f
|
927 |
vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE |
1f2bfbd00
|
928 |
+$(call if_changed,link-vmlinux) |
741f98fe2
|
929 |
|
dd92478a1
|
930 931 932 933 |
# Build samples along the rest of the kernel ifdef CONFIG_SAMPLES vmlinux-dirs += samples endif |
38385f8f0
|
934 |
# The actual objects are generated when descending, |
1da177e4c
|
935 |
# make sure no implicit rule kicks in |
1f2bfbd00
|
936 |
$(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
1da177e4c
|
937 938 939 940 941 942 |
# Handle descending into subdirectories listed in $(vmlinux-dirs) # Preset locale variables to speed up the build process. Limit locale # tweaks to this spot to avoid wrong language settings when running # make menuconfig etc. # Error messages still appears in the original language |
4f1933620
|
943 |
PHONY += $(vmlinux-dirs) |
5bb782690
|
944 |
$(vmlinux-dirs): prepare scripts |
f7adc3124
|
945 |
$(Q)$(MAKE) $(build)=$@ need-builtin=1 |
1da177e4c
|
946 |
|
0d0e7718a
|
947 948 949 |
define filechk_kernel.release echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" endef |
83a35e360
|
950 |
# Store (new) KERNELRELEASE string in include/config/kernel.release |
f1d28fb04
|
951 |
include/config/kernel.release: include/config/auto.conf FORCE |
0d0e7718a
|
952 |
$(call filechk,kernel.release) |
cb58455c4
|
953 |
|
1da177e4c
|
954 |
# Things we need to do before we recursively start building the kernel |
5bb782690
|
955 956 957 958 |
# or the modules are listed in "prepare". # A multi level approach is used. prepareN is processed before prepareN-1. # archprepare is used in arch Makefiles and when processed asm symlink, # version.h and scripts_basic is processed / created. |
1da177e4c
|
959 |
|
5bb782690
|
960 |
# Listed in dependency order |
4f1933620
|
961 |
PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb782690
|
962 |
|
86feeaa81
|
963 |
# prepare3 is used to check if we are building in a separate output directory, |
1da177e4c
|
964 965 |
# and if so do: # 1) Check that make has not been executed in the kernel src $(srctree) |
f1d28fb04
|
966 |
prepare3: include/config/kernel.release |
1da177e4c
|
967 |
ifneq ($(KBUILD_SRC),) |
fd54f5028
|
968 |
@$(kecho) ' Using $(srctree) as source for kernel' |
c955ccafc
|
969 |
$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
5369f5502
|
970 971 |
echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ echo >&2 " in the '$(srctree)' directory.";\ |
1da177e4c
|
972 973 |
/bin/false; \ fi; |
1da177e4c
|
974 |
endif |
c965b105b
|
975 976 977 978 |
# prepare2 creates a makefile if using a separate output directory. # From this point forward, .config has been reprocessed, so any rules # that need to depend on updated CONFIG_* values can be checked here. prepare2: prepare3 prepare-compiler-check outputmakefile asm-generic |
1da177e4c
|
979 |
|
d183e6f57
|
980 |
prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
f7f16b779
|
981 |
include/config/auto.conf |
7bb9d092d
|
982 |
$(cmd_crmodverdir) |
1da177e4c
|
983 |
|
6520fe556
|
984 |
archprepare: archheaders archscripts prepare1 scripts_basic |
5bb782690
|
985 |
|
6b90bd4ba
|
986 |
prepare0: archprepare gcc-plugins |
8d36a6236
|
987 |
$(Q)$(MAKE) $(build)=. |
86feeaa81
|
988 |
|
1da177e4c
|
989 |
# All the preparing.. |
b9ab5ebb1
|
990 |
prepare: prepare0 prepare-objtool |
2c1f4f125
|
991 992 993 994 995 996 997 998 |
# Support for using generic headers in asm-generic PHONY += asm-generic uapi-asm-generic asm-generic: uapi-asm-generic $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ src=asm obj=arch/$(SRCARCH)/include/generated/asm uapi-asm-generic: $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm |
b9ab5ebb1
|
999 |
PHONY += prepare-objtool |
3b27a0c85
|
1000 |
prepare-objtool: $(objtool_target) |
1da177e4c
|
1001 |
|
c965b105b
|
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 |
# Check for CONFIG flags that require compiler support. Abort the build # after .config has been processed, but before the kernel build starts. # # For security-sensitive CONFIG options, we don't want to fallback and/or # silently change which compiler flags will be used, since that leads to # producing kernels with different security feature characteristics # depending on the compiler used. (For example, "But I selected # CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") PHONY += prepare-compiler-check prepare-compiler-check: FORCE # Make sure compiler supports requested stack protector flag. ifdef stackp-name ifeq ($(call cc-option, $(stackp-flag)),) @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ $(stackp-flag) not supported by compiler >&2 && exit 1 endif endif # Make sure compiler does not have buggy stack-protector support. ifdef stackp-check ifneq ($(shell $(CONFIG_SHELL) $(stackp-check) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y) @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ $(stackp-flag) available but compiler is broken >&2 && exit 1 endif endif @: |
1da177e4c
|
1027 1028 1029 1030 1031 1032 1033 |
# Generate some files # --------------------------------------------------------------------------- # 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 |
63104eec2
|
1034 1035 1036 1037 1038 1039 1040 |
define filechk_utsrelease.h if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ exit 1; \ fi; \ (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) endef |
1da177e4c
|
1041 1042 |
define filechk_version.h |
450c6076a
|
1043 1044 |
(echo \#define LINUX_VERSION_CODE $(shell \ expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
63104eec2
|
1045 |
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1da177e4c
|
1046 |
endef |
d183e6f57
|
1047 |
$(version_h): $(srctree)/Makefile FORCE |
1da177e4c
|
1048 |
$(call filechk,version.h) |
223c24a7d
|
1049 |
$(Q)rm -f $(old_version_h) |
1da177e4c
|
1050 |
|
273b281fa
|
1051 |
include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec2
|
1052 |
$(call filechk,utsrelease.h) |
179efcb47
|
1053 1054 |
PHONY += headerdep headerdep: |
9663d9890
|
1055 1056 |
$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ $(srctree)/scripts/headerdep.pl -I$(srctree)/include |
179efcb47
|
1057 |
|
1da177e4c
|
1058 |
# --------------------------------------------------------------------------- |
8d730cfb5
|
1059 |
# Kernel headers |
8d730cfb5
|
1060 |
|
e6883b187
|
1061 1062 |
#Default location for installed headers export INSTALL_HDR_PATH = $(objtree)/usr |
6d7162758
|
1063 |
|
9d022c540
|
1064 1065 |
# If we do an all arch process set dst to include/arch-$(SRCARCH) hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(SRCARCH), dst=include) |
e6883b187
|
1066 |
|
052ad2749
|
1067 1068 |
PHONY += archheaders archheaders: |
6520fe556
|
1069 1070 |
PHONY += archscripts archscripts: |
e6883b187
|
1071 |
PHONY += __headers |
a9d9a400e
|
1072 |
__headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts |
e1b702cf2
|
1073 |
$(Q)$(MAKE) $(build)=scripts build_unifdef |
e6883b187
|
1074 1075 |
PHONY += headers_install_all |
2fb9b1bd9
|
1076 1077 |
headers_install_all: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
6d7162758
|
1078 |
|
8d730cfb5
|
1079 |
PHONY += headers_install |
e6883b187
|
1080 |
headers_install: __headers |
9d022c540
|
1081 |
$(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ |
10b63956f
|
1082 |
$(error Headers not exportable for the $(SRCARCH) architecture)) |
a8ff49a1d
|
1083 |
$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include |
9d022c540
|
1084 |
$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) |
8d730cfb5
|
1085 |
|
1f85712e6
|
1086 1087 |
PHONY += headers_check_all headers_check_all: headers_install_all |
2fb9b1bd9
|
1088 |
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e6
|
1089 |
|
684753599
|
1090 1091 |
PHONY += headers_check headers_check: headers_install |
a8ff49a1d
|
1092 |
$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1 |
9d022c540
|
1093 |
$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1 |
684753599
|
1094 |
|
8d730cfb5
|
1095 |
# --------------------------------------------------------------------------- |
5a5da78b3
|
1096 1097 1098 1099 |
# Kernel selftest PHONY += kselftest kselftest: |
2bc84526d
|
1100 |
$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests |
5a5da78b3
|
1101 |
|
801d2e9f1
|
1102 |
PHONY += kselftest-clean |
dcb825a9f
|
1103 |
kselftest-clean: |
2bc84526d
|
1104 |
$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean |
dcb825a9f
|
1105 |
|
3d6dee7af
|
1106 1107 1108 1109 1110 1111 1112 |
PHONY += kselftest-merge kselftest-merge: $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ -m $(objtree)/.config \ $(srctree)/tools/testing/selftests/*/config +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig |
5a5da78b3
|
1113 |
# --------------------------------------------------------------------------- |
1da177e4c
|
1114 1115 1116 |
# Modules ifdef CONFIG_MODULES |
070b98bfd
|
1117 |
# By default, build modules as well |
1da177e4c
|
1118 |
|
73d1393eb
|
1119 |
all: modules |
1da177e4c
|
1120 |
|
3fbb43df9
|
1121 |
# Build modules |
551559e13
|
1122 |
# |
3fbb43df9
|
1123 1124 1125 |
# 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. |
1da177e4c
|
1126 |
|
4f1933620
|
1127 |
PHONY += modules |
2da30e703
|
1128 |
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
551559e13
|
1129 |
$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
fd54f5028
|
1130 |
@$(kecho) ' Building modules, stage 2.'; |
b805aa0e7
|
1131 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4c
|
1132 |
|
a6c366324
|
1133 1134 |
modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin |
73d1393eb
|
1135 |
%/modules.builtin: include/config/auto.conf |
a6c366324
|
1136 |
$(Q)$(MAKE) $(modbuiltin)=$* |
1da177e4c
|
1137 1138 |
# Target to prepare building external modules |
4f1933620
|
1139 |
PHONY += modules_prepare |
5bb782690
|
1140 |
modules_prepare: prepare scripts |
1da177e4c
|
1141 1142 |
# Target to install modules |
4f1933620
|
1143 |
PHONY += modules_install |
1da177e4c
|
1144 |
modules_install: _modinst_ _modinst_post |
4f1933620
|
1145 |
PHONY += _modinst_ |
2da30e703
|
1146 |
_modinst_: |
1da177e4c
|
1147 1148 1149 |
@rm -rf $(MODLIB)/kernel @rm -f $(MODLIB)/source @mkdir -p $(MODLIB)/kernel |
8e9b46679
|
1150 |
@ln -s $(abspath $(srctree)) $(MODLIB)/source |
1da177e4c
|
1151 1152 |
@if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ rm -f $(MODLIB)/build ; \ |
7e1c04779
|
1153 |
ln -s $(CURDIR) $(MODLIB)/build ; \ |
1da177e4c
|
1154 |
fi |
551559e13
|
1155 |
@cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6e
|
1156 |
@cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e7
|
1157 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4c
|
1158 |
|
50a8ec31c
|
1159 |
# This depmod is only for convenience to give the initial |
1da177e4c
|
1160 1161 |
# boot a modules.dep even before / is mounted read-write. However the # boot script depmod is the master version. |
4f1933620
|
1162 |
PHONY += _modinst_post |
6d128e1e7
|
1163 |
_modinst_post: _modinst_ |
50a8ec31c
|
1164 |
$(call cmd,depmod) |
1da177e4c
|
1165 |
|
d890f510c
|
1166 1167 1168 1169 1170 |
ifeq ($(CONFIG_MODULE_SIG), y) PHONY += modules_sign modules_sign: $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign endif |
1da177e4c
|
1171 1172 1173 1174 |
else # CONFIG_MODULES # Modules not configured # --------------------------------------------------------------------------- |
612e47cec
|
1175 1176 |
PHONY += modules modules_install modules modules_install: |
5369f5502
|
1177 1178 1179 1180 1181 |
@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 |
1da177e4c
|
1182 1183 1184 |
@exit 1 endif # CONFIG_MODULES |
1da177e4c
|
1185 1186 1187 1188 1189 1190 1191 1192 1193 |
### # Cleaning is done on three levels. # make clean Delete most generated files # Leave enough to build external modules # make mrproper Delete the current configuration, and all generated files # make distclean Remove editor backup files, patch leftover files and the like # Directories & files removed with 'make clean' CLEAN_DIRS += $(MODVERDIR) |
1da177e4c
|
1194 1195 |
# Directories & files removed with 'make mrproper' |
d8ecc5cd8
|
1196 |
MRPROPER_DIRS += include/config usr/include include/generated \ |
3fbb43df9
|
1197 |
arch/*/include/generated .tmp_objdiff |
278ae6040
|
1198 |
MRPROPER_FILES += .config .config.old .version \ |
d5b719365
|
1199 |
Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
fb1179499
|
1200 1201 |
signing_key.pem signing_key.priv signing_key.x509 \ x509.genkey extra_certificates signing_key.x509.keyid \ |
3ee7b3fa2
|
1202 |
signing_key.x509.signer vmlinux-gdb.py |
1da177e4c
|
1203 1204 1205 1206 1207 |
# clean - Delete most, but leave enough to build external modules # clean: rm-dirs := $(CLEAN_DIRS) clean: rm-files := $(CLEAN_FILES) |
fb68d4be9
|
1208 |
clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
1da177e4c
|
1209 |
|
bd1ee804a
|
1210 |
PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1da177e4c
|
1211 1212 |
$(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
bd1ee804a
|
1213 1214 |
vmlinuxclean: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean |
fbe6e37da
|
1215 |
$(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) |
bd1ee804a
|
1216 1217 |
clean: archclean vmlinuxclean |
1da177e4c
|
1218 1219 1220 1221 1222 |
# mrproper - Delete all generated files, including .config # mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
cb43fb577
|
1223 |
mrproper-dirs := $(addprefix _mrproper_,scripts) |
1da177e4c
|
1224 |
|
4f1933620
|
1225 |
PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4c
|
1226 1227 1228 1229 1230 1231 1232 1233 1234 |
$(mrproper-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) mrproper: clean archmrproper $(mrproper-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) # distclean # |
4f1933620
|
1235 |
PHONY += distclean |
1da177e4c
|
1236 1237 1238 |
distclean: mrproper @find $(srctree) $(RCS_FIND_IGNORE) \ |
070b98bfd
|
1239 |
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
f78271dfb
|
1240 1241 |
-o -name '*.bak' -o -name '#*#' -o -name '*%' \ -o -name 'core' \) \ |
1da177e4c
|
1242 1243 1244 1245 1246 1247 |
-type f -print | xargs rm -f # Packaging of the kernel to various formats # --------------------------------------------------------------------------- # rpm target kept for backward compatibility |
c79624c1a
|
1248 |
package-dir := scripts/package |
1da177e4c
|
1249 |
|
bafb67470
|
1250 1251 |
%src-pkg: FORCE $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6de
|
1252 |
%pkg: include/config/kernel.release FORCE |
6c2133e11
|
1253 |
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
ebaad7d36
|
1254 1255 1256 |
rpm: rpm-pkg @echo " WARNING: \"rpm\" target will be removed after Linux 4.18" @echo " Please use \"rpm-pkg\" instead." |
1da177e4c
|
1257 1258 1259 1260 |
# Brief documentation of the typical targets used # --------------------------------------------------------------------------- |
5dffbe811
|
1261 |
boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
a1e7b7bb1
|
1262 |
boards := $(sort $(notdir $(boards))) |
5dffbe811
|
1263 1264 |
board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) board-dirs := $(sort $(notdir $(board-dirs:/=))) |
1da177e4c
|
1265 |
|
fe69b420d
|
1266 |
PHONY += help |
1da177e4c
|
1267 1268 |
help: @echo 'Cleaning targets:' |
5ea084ef9
|
1269 |
@echo ' clean - Remove most generated files but keep the config and' |
5cc8d246d
|
1270 |
@echo ' enough build support to build external modules' |
5ea084ef9
|
1271 |
@echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246d
|
1272 |
@echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4c
|
1273 1274 1275 1276 1277 1278 1279 1280 |
@echo '' @echo 'Configuration targets:' @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help @echo '' @echo 'Other generic targets:' @echo ' all - Build all targets marked with [*]' @echo '* vmlinux - Build the bare kernel' @echo '* modules - Build all modules' |
9cc5d74c8
|
1281 |
@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
1da177e4c
|
1282 |
@echo ' dir/ - Build all files in dir and below' |
40ab87a40
|
1283 |
@echo ' dir/file.[ois] - Build specified target only' |
433db3e26
|
1284 1285 |
@echo ' dir/file.ll - Build the LLVM assembly file' @echo ' (requires compiler support for LLVM assembly generation)' |
627189797
|
1286 1287 |
@echo ' dir/file.lst - Build specified mixed source/assembly target only' @echo ' (requires a recent binutils and recent build (System.map))' |
155ad605b
|
1288 |
@echo ' dir/file.ko - Build module including final link' |
c4d5ee67c
|
1289 |
@echo ' modules_prepare - Set up for building external modules' |
1da177e4c
|
1290 1291 |
@echo ' tags/TAGS - Generate tags file for editors' @echo ' cscope - Generate cscope index' |
f4ed1009f
|
1292 |
@echo ' gtags - Generate GNU GLOBAL index' |
3f1d9a6ce
|
1293 1294 1295 |
@echo ' kernelrelease - Output the release version string (use with make -s)' @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' @echo ' image_name - Output the image name (use with make -s)' |
2fb9b1bd9
|
1296 |
@echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230f
|
1297 |
echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd9
|
1298 |
echo '' |
31b8cc807
|
1299 |
@echo 'Static analysers:' |
1da177e4c
|
1300 1301 |
@echo ' checkstack - Generate a list of stack hogs' @echo ' namespacecheck - Name space analysis on compiled kernel' |
aa025e7d5
|
1302 |
@echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f9
|
1303 |
@echo ' includecheck - Check for duplicate included header files' |
295ac0518
|
1304 |
@echo ' export_report - List the usages of all exported symbols' |
179efcb47
|
1305 |
@echo ' headers_check - Sanity check on exported headers' |
74425eee7
|
1306 |
@echo ' headerdep - Detect inclusion cycles in headers' |
7f855fc80
|
1307 |
@echo ' coccicheck - Check with Coccinelle' |
74425eee7
|
1308 |
@echo '' |
31b8cc807
|
1309 |
@echo 'Kernel selftest:' |
5a5da78b3
|
1310 1311 1312 |
@echo ' kselftest - Build and run kernel selftest (run as root)' @echo ' Build, install, and boot kernel before' @echo ' running kselftest on it' |
dcb825a9f
|
1313 |
@echo ' kselftest-clean - Remove all generated kselftest files' |
bbfe63b60
|
1314 |
@echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' |
3d6dee7af
|
1315 |
@echo ' .config.' |
5a5da78b3
|
1316 |
@echo '' |
31b8cc807
|
1317 1318 1319 1320 |
@echo 'Userspace tools targets:' @echo ' use "make tools/help"' @echo ' or "cd tools; make help"' @echo '' |
1da177e4c
|
1321 |
@echo 'Kernel packaging:' |
6c2133e11
|
1322 |
@$(MAKE) $(build)=$(package-dir) help |
1da177e4c
|
1323 1324 |
@echo '' @echo 'Documentation targets:' |
cb43fb577
|
1325 |
@$(MAKE) -f $(srctree)/Documentation/Makefile dochelp |
1da177e4c
|
1326 |
@echo '' |
01dee1881
|
1327 |
@echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4c
|
1328 |
@$(if $(archhelp),$(archhelp),\ |
01dee1881
|
1329 |
echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4c
|
1330 1331 1332 1333 1334 1335 |
@echo '' @$(if $(boards), \ $(foreach b, $(boards), \ printf " %-24s - Build for %s\ " $(b) $(subst _defconfig,,$(b));) \ echo '') |
5dffbe811
|
1336 1337 1338 1339 1340 1341 1342 |
@$(if $(board-dirs), \ $(foreach b, $(board-dirs), \ printf " %-16s - Show %s-specific targets\ " help-$(b) $(b);) \ printf " %-16s - Show all of the above\ " help-boards; \ echo '') |
1da177e4c
|
1343 1344 |
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
45d506bd6
|
1345 |
@echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4c
|
1346 |
@echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
9ba26a728
|
1347 |
@echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' |
701842e3b
|
1348 |
@echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
af07ce3e7
|
1349 |
@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
28bc20dcc
|
1350 1351 1352 1353 |
@echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' @echo ' 1: warnings which may be relevant and do not occur too often' @echo ' 2: warnings which occur quite often but may still be relevant' @echo ' 3: more obscure warnings, can most likely be ignored' |
a6de553da
|
1354 |
@echo ' Multiple levels can be combined with W=12 or W=123' |
1da177e4c
|
1355 1356 1357 |
@echo '' @echo 'Execute "make" or "make all" to build all targets marked with [*] ' @echo 'For further info see the ./README file' |
5dffbe811
|
1358 1359 1360 |
help-board-dirs := $(addprefix help-,$(board-dirs)) help-boards: $(help-board-dirs) |
fbae4d585
|
1361 |
boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) |
5dffbe811
|
1362 1363 1364 1365 1366 1367 1368 1369 |
$(help-board-dirs): help-%: @echo 'Architecture specific targets ($(SRCARCH) $*):' @$(if $(boards-per-dir), \ $(foreach b, $(boards-per-dir), \ printf " %-24s - Build for %s\ " $*/$(b) $(subst _defconfig,,$(b));) \ echo '') |
1da177e4c
|
1370 1371 |
# Documentation targets # --------------------------------------------------------------------------- |
e8939222d
|
1372 1373 |
DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ linkcheckdocs dochelp refcheckdocs |
22cba31ba
|
1374 1375 |
PHONY += $(DOC_TARGETS) $(DOC_TARGETS): scripts_basic FORCE |
cb43fb577
|
1376 |
$(Q)$(MAKE) $(build)=Documentation $@ |
1da177e4c
|
1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 |
else # KBUILD_EXTMOD ### # External module support. # When building external modules the kernel used as basis is considered # read-only, and no consistency checks are made and the make # system is not used on the basis kernel. If updates are required # in the basis kernel ordinary make commands (without M=...) must # be used. # # The following are the only valid targets when building external # modules. # make M=dir clean Delete all automatically generated files # make M=dir modules Make all modules in specified dir # make M=dir Same as 'make M=dir modules' # make M=dir modules_install |
070b98bfd
|
1394 |
# Install the modules built in the module directory |
1da177e4c
|
1395 1396 1397 1398 |
# Assumes install directory is already created # We are always building modules KBUILD_MODULES := 1 |
4f1933620
|
1399 |
PHONY += crmodverdir |
1da177e4c
|
1400 |
crmodverdir: |
7bb9d092d
|
1401 |
$(cmd_crmodverdir) |
1da177e4c
|
1402 |
|
4f1933620
|
1403 |
PHONY += $(objtree)/Module.symvers |
1da177e4c
|
1404 1405 1406 1407 1408 1409 1410 1411 |
$(objtree)/Module.symvers: @test -e $(objtree)/Module.symvers || ( \ echo; \ echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ echo " is missing; modules will have no dependencies and modversions."; \ echo ) module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
4f1933620
|
1412 |
PHONY += $(module-dirs) modules |
1da177e4c
|
1413 1414 1415 1416 |
$(module-dirs): crmodverdir $(objtree)/Module.symvers $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) modules: $(module-dirs) |
fd54f5028
|
1417 |
@$(kecho) ' Building modules, stage 2.'; |
b805aa0e7
|
1418 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4c
|
1419 |
|
4f1933620
|
1420 |
PHONY += modules_install |
a67dc21a3
|
1421 |
modules_install: _emodinst_ _emodinst_post |
e63046630
|
1422 |
|
4f1933620
|
1423 1424 |
install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) PHONY += _emodinst_ |
a67dc21a3
|
1425 |
_emodinst_: |
a67dc21a3
|
1426 |
$(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e7
|
1427 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4c
|
1428 |
|
4f1933620
|
1429 |
PHONY += _emodinst_post |
a67dc21a3
|
1430 1431 |
_emodinst_post: _emodinst_ $(call cmd,depmod) |
1da177e4c
|
1432 |
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
4f1933620
|
1433 |
PHONY += $(clean-dirs) clean |
1da177e4c
|
1434 1435 1436 1437 |
$(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) clean: rm-dirs := $(MODVERDIR) |
88d7be031
|
1438 |
clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4c
|
1439 |
|
fe69b420d
|
1440 |
PHONY += help |
1da177e4c
|
1441 1442 1443 1444 1445 1446 1447 1448 |
help: @echo ' Building external modules.' @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' @echo '' @echo ' modules - default target, build the module(s)' @echo ' modules_install - install the module' @echo ' clean - remove generated files in module directory only' @echo '' |
06300b21f
|
1449 1450 |
# Dummies... |
4f1933620
|
1451 |
PHONY += prepare scripts |
06300b21f
|
1452 1453 |
prepare: ; scripts: ; |
1da177e4c
|
1454 |
endif # KBUILD_EXTMOD |
88d7be031
|
1455 1456 1457 |
clean: $(clean-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) |
43f67c981
|
1458 |
@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
ef46d9b3d
|
1459 |
\( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ |
74ce1896c
|
1460 |
-o -name '*.ko.*' -o -name '*.dtb' -o -name '*.dtb.S' \ |
ef46d9b3d
|
1461 |
-o -name '*.dwo' -o -name '*.lst' \ |
d523b255d
|
1462 |
-o -name '*.su' \ |
88d7be031
|
1463 1464 1465 |
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ -o -name '*.symtypes' -o -name 'modules.order' \ -o -name modules.builtin -o -name '.tmp_*.o.*' \ |
3298b690b
|
1466 |
-o -name .cache.mk \ |
6b90bd4ba
|
1467 |
-o -name '*.c.[012]*.*' \ |
433db3e26
|
1468 |
-o -name '*.ll' \ |
88d7be031
|
1469 |
-o -name '*.gcno' \) -type f -print | xargs rm -f |
1da177e4c
|
1470 1471 |
# Generate tags for editors # --------------------------------------------------------------------------- |
a680eedc6
|
1472 1473 |
quiet_cmd_tags = GEN $@ cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
1da177e4c
|
1474 |
|
f4ed1009f
|
1475 |
tags TAGS cscope gtags: FORCE |
1da177e4c
|
1476 |
$(call cmd,tags) |
1da177e4c
|
1477 1478 |
# Scripts to check various things for consistency # --------------------------------------------------------------------------- |
279f3dd35
|
1479 |
PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1da177e4c
|
1480 |
includecheck: |
436f876cc
|
1481 |
find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4c
|
1482 |
-name '*.[hcS]' -type f -print | sort \ |
800074345
|
1483 |
| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4c
|
1484 1485 |
versioncheck: |
2ee2d2928
|
1486 |
find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4c
|
1487 |
-name '*.[hcS]' -type f -print | sort \ |
800074345
|
1488 |
| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4c
|
1489 |
|
74425eee7
|
1490 1491 |
coccicheck: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
1da177e4c
|
1492 1493 |
namespacecheck: $(PERL) $(srctree)/scripts/namespace.pl |
295ac0518
|
1494 1495 |
export_report: $(PERL) $(srctree)/scripts/export_report.pl |
1da177e4c
|
1496 1497 |
endif #ifeq ($(config-targets),1) endif #ifeq ($(mixed-targets),1) |
c398ff00f
|
1498 |
PHONY += checkstack kernelrelease kernelversion image_name |
e3ccf6e36
|
1499 |
|
011e3a9ad
|
1500 1501 1502 1503 1504 1505 1506 1507 1508 |
# 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 |
1da177e4c
|
1509 1510 |
checkstack: $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
011e3a9ad
|
1511 |
$(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4c
|
1512 |
|
7b8ea53d7
|
1513 1514 |
kernelrelease: @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
01ab17887
|
1515 |
|
cb58455c4
|
1516 |
kernelversion: |
2244cbd8a
|
1517 |
@echo $(KERNELVERSION) |
1da177e4c
|
1518 |
|
c398ff00f
|
1519 1520 |
image_name: @echo $(KBUILD_IMAGE) |
ea01fa9f6
|
1521 1522 |
# Clear a bunch of variables before executing the submake tools/: FORCE |
bf35182ff
|
1523 |
$(Q)mkdir -p $(objtree)/tools |
8e9b46679
|
1524 |
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ |
ea01fa9f6
|
1525 1526 |
tools/%: FORCE |
bf35182ff
|
1527 |
$(Q)mkdir -p $(objtree)/tools |
8e9b46679
|
1528 |
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ $* |
ea01fa9f6
|
1529 |
|
06300b21f
|
1530 1531 |
# Single targets # --------------------------------------------------------------------------- |
bc2546a67
|
1532 |
# Single targets are compatible with: |
e1b8513d2
|
1533 |
# - build with mixed source and output |
bc2546a67
|
1534 1535 1536 1537 1538 1539 1540 |
# - build with separate output dir 'make O=...' # - external modules # # target-dir => where to store outputfile # build-dir => directory in kernel source tree to use ifeq ($(KBUILD_EXTMOD),) |
aa360879e
|
1541 |
build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a67
|
1542 1543 1544 1545 1546 1547 |
target-dir = $(dir $@) else zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) endif |
f6ecebd65
|
1548 |
%.s: %.c prepare scripts FORCE |
bc2546a67
|
1549 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1550 |
%.i: %.c prepare scripts FORCE |
bc2546a67
|
1551 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1552 |
%.o: %.c prepare scripts FORCE |
bc2546a67
|
1553 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1554 |
%.lst: %.c prepare scripts FORCE |
bc2546a67
|
1555 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1556 |
%.s: %.S prepare scripts FORCE |
bc2546a67
|
1557 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1558 |
%.o: %.S prepare scripts FORCE |
bc2546a67
|
1559 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde6751
|
1560 1561 |
%.symtypes: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
433db3e26
|
1562 1563 |
%.ll: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
06300b21f
|
1564 |
|
bc2546a67
|
1565 |
# Modules |
31110ebbe
|
1566 1567 1568 1569 |
/: prepare scripts FORCE $(cmd_crmodverdir) $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) |
8e2faea87
|
1570 |
# Make sure the latest headers are built for Documentation |
ddea05fa1
|
1571 |
Documentation/ samples/: headers_install |
31110ebbe
|
1572 |
%/: prepare scripts FORCE |
7bb9d092d
|
1573 |
$(cmd_crmodverdir) |
06300b21f
|
1574 |
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a67
|
1575 1576 |
$(build)=$(build-dir) %.ko: prepare scripts FORCE |
7bb9d092d
|
1577 |
$(cmd_crmodverdir) |
06300b21f
|
1578 |
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a67
|
1579 |
$(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e7
|
1580 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21f
|
1581 |
|
38385f8f0
|
1582 |
# FIXME Should go into a make.lib or something |
1da177e4c
|
1583 1584 1585 1586 1587 1588 1589 |
# =========================================================================== quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) cmd_rmdirs = rm -rf $(rm-dirs) quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) cmd_rmfiles = rm -f $(rm-files) |
bc3c26fe6
|
1590 |
# Run depmod only if we have System.map and depmod is executable |
50a8ec31c
|
1591 |
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
569658ddd
|
1592 |
cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
b92021b09
|
1593 |
$(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
50a8ec31c
|
1594 |
|
7bb9d092d
|
1595 |
# Create temporary dir for module support files |
ab19f8794
|
1596 1597 1598 |
# clean it up only when building all modules cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
1da177e4c
|
1599 |
|
1da177e4c
|
1600 |
# read all saved command lines |
2982c9535
|
1601 |
cmd_files := $(wildcard .*.cmd $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd)) |
1da177e4c
|
1602 1603 1604 1605 1606 |
ifneq ($(cmd_files),) $(cmd_files): ; # Do not try to update included dependency files include $(cmd_files) endif |
1da177e4c
|
1607 |
endif # skip-makefile |
4f1933620
|
1608 |
PHONY += FORCE |
1da177e4c
|
1609 |
FORCE: |
4f1933620
|
1610 |
|
4f1933620
|
1611 |
# Declare the contents of the .PHONY variable as phony. We keep that |
fe8d0a410
|
1612 |
# information in a variable so we can use it in if_changed and friends. |
4f1933620
|
1613 |
.PHONY: $(PHONY) |