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# SPDX-License-Identifier: GPL-2.0 |
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VERSION = 5 |
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PATCHLEVEL = 3 |
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SUBLEVEL = 0 |
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EXTRAVERSION = -rc7 |
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NAME = Bobtail Squid |
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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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# 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 |
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# unavoidable when linking the built-in.a targets which finally |
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# 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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ifneq ($(sub_make_done),1) |
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# Do not use make's built-in rules and variables # (this increases performance and avoids hard-to-debug behaviour) MAKEFLAGS += -rR # Avoid funny character set dependencies unexport LC_ALL LC_COLLATE=C LC_NUMERIC=C export LC_COLLATE LC_NUMERIC # Avoid interference with shell env settings unexport GREP_OPTIONS |
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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 --%,$(MAKEFLAGS))),) |
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quiet=silent_ endif |
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export quiet Q KBUILD_VERBOSE |
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# Kbuild will save output files in the current working directory. # This does not need to match to the root of the kernel source tree. # # For example, you can do this: # # cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile # # If you want to save output files in a different location, there are # two syntaxes to specify it. # |
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# 1) O= # Use "make O=dir/to/store/output/files/" |
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# |
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# 2) Set KBUILD_OUTPUT |
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# Set the environment variable KBUILD_OUTPUT to point to the output directory. # export KBUILD_OUTPUT=dir/to/store/output/files/; make |
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# # The O= assignment takes precedence over the KBUILD_OUTPUT environment # variable. |
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# Do we want to change the working directory? |
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ifeq ("$(origin O)", "command line") KBUILD_OUTPUT := $(O) |
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endif |
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ifneq ($(KBUILD_OUTPUT),) # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot # expand a shell special character '~'. We use a somewhat tedious way here. abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) $(if $(abs_objtree),, \ $(error failed to create output directory "$(KBUILD_OUTPUT)")) # $(realpath ...) resolves symlinks abs_objtree := $(realpath $(abs_objtree)) else abs_objtree := $(CURDIR) endif # ifneq ($(KBUILD_OUTPUT),) ifeq ($(abs_objtree),$(CURDIR)) # Suppress "Entering directory ..." unless we are changing the work directory. MAKEFLAGS += --no-print-directory else need-sub-make := 1 |
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endif |
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abs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST)))) |
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ifneq ($(words $(subst :, ,$(abs_srctree))), 1) $(error source directory cannot contain spaces or colons) endif |
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ifneq ($(abs_srctree),$(abs_objtree)) |
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# Look for make include files relative to root of kernel src # # This does not become effective immediately because MAKEFLAGS is re-parsed |
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# once after the Makefile is read. We need to invoke sub-make. MAKEFLAGS += --include-dir=$(abs_srctree) |
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need-sub-make := 1 |
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endif |
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ifneq ($(filter 3.%,$(MAKE_VERSION)),) # 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x # We need to invoke sub-make to avoid implicit rules in the top Makefile. need-sub-make := 1 # Cancel implicit rules for this Makefile. $(lastword $(MAKEFILE_LIST)): ; endif |
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export abs_srctree abs_objtree |
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export sub_make_done := 1 |
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ifeq ($(need-sub-make),1) |
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PHONY += $(MAKECMDGOALS) sub-make |
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$(filter-out _all sub-make $(lastword $(MAKEFILE_LIST)), $(MAKECMDGOALS)) _all: sub-make |
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@: |
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# Invoke a second make in the output directory, passing relevant variables |
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sub-make: |
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$(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) |
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endif # need-sub-make |
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endif # sub_make_done |
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# We process the rest of the Makefile if this is the final invocation of make |
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ifeq ($(need-sub-make),) |
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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 |
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$(warning ================= WARNING ================) $(warning 'SUBDIRS' will be removed after Linux 5.3) |
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$(warning ) $(warning If you are building an individual subdirectory) $(warning in the kernel tree, you can do like this:) $(warning $$ make path/to/dir/you/want/to/build/) $(warning (Do not forget the trailing slash)) $(warning ) $(warning If you are building an external module,) |
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$(warning Please use 'M=' or 'KBUILD_EXTMOD' instead) $(warning ==========================================) |
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KBUILD_EXTMOD ?= $(SUBDIRS) endif ifeq ("$(origin M)", "command line") KBUILD_EXTMOD := $(M) endif |
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export KBUILD_CHECKSRC KBUILD_EXTMOD |
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ifeq ($(abs_srctree),$(abs_objtree)) |
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# building in the source tree srctree := . |
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building_out_of_srctree := |
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else |
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ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) |
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# building in a subdirectory of the source tree srctree := .. else |
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srctree := $(abs_srctree) |
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endif |
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building_out_of_srctree := 1 |
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endif |
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ifneq ($(KBUILD_ABS_SRCTREE),) srctree := $(abs_srctree) endif |
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objtree := . |
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VPATH := $(srctree) |
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export building_out_of_srctree 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 |
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clean-targets := %clean mrproper cleandocs no-dot-config-targets := $(clean-targets) \ |
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cscope gtags TAGS tags help% %docs check% coccicheck \ |
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$(version_h) headers headers_% archheaders archscripts \ |
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%asm-generic kernelversion %src-pkg |
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no-sync-config-targets := $(no-dot-config-targets) install %install \ kernelrelease |
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config-targets := 0 mixed-targets := 0 dot-config := 1 may-sync-config := 1 |
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ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) dot-config := 0 endif endif |
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ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) may-sync-config := 0 endif endif ifneq ($(KBUILD_EXTMOD),) may-sync-config := 0 endif |
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ifeq ($(KBUILD_EXTMOD),) ifneq ($(filter config %config,$(MAKECMDGOALS)),) config-targets := 1 ifneq ($(words $(MAKECMDGOALS)),1) mixed-targets := 1 endif endif endif |
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# For "make -j clean all", "make -j mrproper defconfig all", etc. ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) mixed-targets := 1 endif endif |
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# 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 |
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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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include scripts/subarch.include |
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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. # 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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# 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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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 2>/dev/null) HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) |
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HOSTCC = gcc HOSTCXX = g++ |
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KBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ |
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-fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \ $(HOSTCFLAGS) KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) |
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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 |
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OBJSIZE = $(CROSS_COMPILE)size |
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PAHOLE = pahole |
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LEX = flex YACC = bison |
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AWK = awk |
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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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PYTHON2 = python2 PYTHON3 = python3 |
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CHECK = sparse |
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CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
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-Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) |
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NOSTDINC_FLAGS := |
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CFLAGS_MODULE = AFLAGS_MODULE = LDFLAGS_MODULE = |
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CFLAGS_KERNEL = AFLAGS_KERNEL = |
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LDFLAGS_vmlinux = |
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# Use USERINCLUDE when you must reference the UAPI directories only. USERINCLUDE := \ |
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-I$(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 $(building_out_of_srctree),-I$(srctree)/include) \ |
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-I$(objtree)/include \ $(USERINCLUDE) |
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KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE |
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KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ |
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-fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ |
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-Werror=implicit-function-declaration -Werror=implicit-int \ |
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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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KBUILD_LDFLAGS := |
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GCC_PLUGINS_CFLAGS := |
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CLANG_FLAGS := |
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export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC |
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export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK INSTALLKERNEL export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE |
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export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS |
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export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE 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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# 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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|
478 |
PHONY += outputmakefile |
fd5f0cd6b
|
479 480 481 |
# outputmakefile generates a Makefile in the output directory, if using a # separate output directory. This allows convenient use of make in the # output directory. |
3a51ff344
|
482 483 |
# At the same time when output Makefile generated, generate .gitignore to # ignore whole output directory |
1da177e4c
|
484 |
outputmakefile: |
051f278e9
|
485 |
ifdef building_out_of_srctree |
929799973
|
486 |
$(Q)ln -fsn $(srctree) source |
4fd61277f
|
487 |
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) |
156e7cbb3
|
488 489 |
$(Q)test -e .gitignore || \ { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore |
fd5f0cd6b
|
490 |
endif |
1da177e4c
|
491 |
|
995167420
|
492 |
ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) |
ae6b289a3
|
493 |
ifneq ($(CROSS_COMPILE),) |
5241ab4cf
|
494 |
CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) |
ad15006cc
|
495 |
GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) |
238bcbc4e
|
496 |
CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR) |
ef8c4ed9d
|
497 |
GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) |
ae6b289a3
|
498 499 |
endif ifneq ($(GCC_TOOLCHAIN),) |
238bcbc4e
|
500 |
CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) |
ae6b289a3
|
501 |
endif |
876a06008
|
502 |
ifeq ($(shell $(AS) --version 2>&1 | head -n 1 | grep clang),) |
238bcbc4e
|
503 |
CLANG_FLAGS += -no-integrated-as |
876a06008
|
504 |
endif |
589834b3a
|
505 |
CLANG_FLAGS += -Werror=unknown-warning-option |
238bcbc4e
|
506 507 |
KBUILD_CFLAGS += $(CLANG_FLAGS) KBUILD_AFLAGS += $(CLANG_FLAGS) |
3bd980509
|
508 |
export CLANG_FLAGS |
ae6b289a3
|
509 |
endif |
315bab4e9
|
510 511 512 513 |
# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), # and from include/config/auto.conf.cmd to detect the compiler upgrade. |
902a6898b
|
514 |
CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1) |
315bab4e9
|
515 |
|
1da177e4c
|
516 517 518 519 520 521 522 523 |
ifeq ($(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' |
a436bb7b8
|
524 |
include arch/$(SRCARCH)/Makefile |
315bab4e9
|
525 |
export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT |
1da177e4c
|
526 |
|
31110ebbe
|
527 |
config: scripts_basic outputmakefile FORCE |
31110ebbe
|
528 529 530 |
$(Q)$(MAKE) $(build)=scripts/kconfig $@ %config: scripts_basic outputmakefile FORCE |
1da177e4c
|
531 532 533 534 535 536 |
$(Q)$(MAKE) $(build)=scripts/kconfig $@ else # =========================================================================== # Build targets only - this includes vmlinux, arch specific targets, clean # targets and others. In general all targets except *config targets. |
2c1f4f125
|
537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 |
# If building an external module we do not care about the all: rule # but instead _all depend on modules PHONY += all ifeq ($(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 |
d93a18f27
|
574 575 576 |
ifeq ($(dot-config),1) include include/config/auto.conf endif |
1da177e4c
|
577 |
ifeq ($(KBUILD_EXTMOD),) |
1da177e4c
|
578 579 |
# Objects we will link into vmlinux / subdirs we need to visit init-y := init/ |
f96182e95
|
580 |
drivers-y := drivers/ sound/ |
d93a18f27
|
581 |
drivers-$(CONFIG_SAMPLES) += samples/ |
43c78d880
|
582 |
drivers-$(CONFIG_KERNEL_HEADER_TEST) += include/ |
1da177e4c
|
583 584 585 |
net-y := net/ libs-y := lib/ core-y := usr/ |
37d9fe478
|
586 |
virt-y := virt/ |
1da177e4c
|
587 |
endif # KBUILD_EXTMOD |
315bab4e9
|
588 589 590 591 592 593 594 595 596 |
# 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 # Defaults to vmlinux, but the arch makefile usually adds further targets all: vmlinux CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ $(call cc-option,-fno-tree-loop-im) \ $(call cc-disable-warning,maybe-uninitialized,) |
5aadfdeb8
|
597 |
export CFLAGS_GCOV |
315bab4e9
|
598 |
|
b1f4ff74f
|
599 600 601 602 |
# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. ifdef CONFIG_FUNCTION_TRACER CC_FLAGS_FTRACE := -pg endif |
669e06b19
|
603 604 605 606 607 608 609 610 |
RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) export RETPOLINE_CFLAGS export RETPOLINE_VDSO_CFLAGS |
315bab4e9
|
611 612 613 614 615 616 |
# 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 := include arch/$(SRCARCH)/Makefile |
1da177e4c
|
617 |
|
315bab4e9
|
618 |
ifeq ($(dot-config),1) |
d79424137
|
619 |
ifeq ($(may-sync-config),1) |
315bab4e9
|
620 621 622 |
# Read in dependencies to all Kconfig* files, make sure to run syncconfig if # changes are detected. This should be included after arch/$(SRCARCH)/Makefile # because some architectures define CROSS_COMPILE there. |
d2f8ae0e4
|
623 |
include include/config/auto.conf.cmd |
1da177e4c
|
624 |
|
058507195
|
625 626 627 628 629 630 631 632 |
$(KCONFIG_CONFIG): @echo >&2 '***' @echo >&2 '*** Configuration file "$@" not found!' @echo >&2 '***' @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' @echo >&2 '*** "make menuconfig" or "make xconfig").' @echo >&2 '***' @/bin/false |
1da177e4c
|
633 |
|
61277981d
|
634 635 636 |
# The actual configuration files used during the build are stored in # include/generated/ and include/config/. Update them if .config is newer than # include/config/auto.conf (which mirrors .config). |
9390dff66
|
637 638 639 640 |
# # This exploits the 'multi-target pattern rule' trick. # The syncconfig should be executed only once to make all the targets. %/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG) |
911a91c39
|
641 |
$(Q)$(MAKE) -f $(srctree)/Makefile syncconfig |
1da177e4c
|
642 |
else |
d79424137
|
643 644 645 |
# External modules and some install targets need include/generated/autoconf.h # and include/config/auto.conf but do not care if they are up-to-date. # Use auto.conf to trigger the test |
9ee4e3365
|
646 647 648 |
PHONY += include/config/auto.conf include/config/auto.conf: |
264a26838
|
649 |
$(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
5369f5502
|
650 651 652 653 654 |
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
|
655 |
/bin/false) |
d79424137
|
656 |
endif # may-sync-config |
9ee4e3365
|
657 |
endif # $(dot-config) |
1da177e4c
|
658 |
|
a1c48bb16
|
659 |
KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) |
ef6000b4c
|
660 |
KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) |
bd664f6b3
|
661 662 |
KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) |
6f303d605
|
663 |
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) |
a1c48bb16
|
664 |
|
1da177e4c
|
665 |
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
a75bb4eb9
|
666 |
KBUILD_CFLAGS += -Os |
815eb71e7
|
667 668 669 |
else KBUILD_CFLAGS += -O2 endif |
1da177e4c
|
670 |
|
b303c6df8
|
671 672 673 |
ifdef CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED KBUILD_CFLAGS += -Wno-maybe-uninitialized endif |
a76bcf557
|
674 |
|
69102311a
|
675 676 |
# Tell gcc to never replace conditional load with a non-conditional one KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) |
d677a4d60
|
677 |
include scripts/Makefile.kcov |
6b90bd4ba
|
678 |
include scripts/Makefile.gcc-plugins |
1873e870f
|
679 680 681 682 683 684 685 686 687 |
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,) \ $(call cc-option,-fno-partial-inlining) endif |
08f67461c
|
688 |
ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e0
|
689 690 |
KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) endif |
2a61f4747
|
691 |
stackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector |
050e9baa9
|
692 693 |
stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong |
2a61f4747
|
694 695 |
KBUILD_CFLAGS += $(stackp-flags-y) |
e06b8b98d
|
696 |
|
076f421da
|
697 |
ifdef CONFIG_CC_IS_CLANG |
a14943043
|
698 699 700 |
KBUILD_CPPFLAGS += -Qunused-arguments KBUILD_CFLAGS += -Wno-format-invalid-specifier KBUILD_CFLAGS += -Wno-gnu |
cfe17c9bb
|
701 |
# Quiet clang warning: comparison of unsigned expression < 0 is always false |
a14943043
|
702 |
KBUILD_CFLAGS += -Wno-tautological-compare |
cfe17c9bb
|
703 704 705 |
# 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 |
a14943043
|
706 |
KBUILD_CFLAGS += -mno-global-merge |
cfe17c9bb
|
707 708 709 710 |
else # These warnings generated too much noise in a regular build. # Use make W=1 to enable them (see scripts/Makefile.extrawarn) |
9df3e7a7d
|
711 |
KBUILD_CFLAGS += -Wno-unused-but-set-variable |
cfe17c9bb
|
712 |
endif |
0a5f41767
|
713 |
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) |
1da177e4c
|
714 |
ifdef CONFIG_FRAME_POINTER |
a0f97e06a
|
715 |
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4c
|
716 |
else |
7e9501fde
|
717 718 719 720 721 722 |
# 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
|
723 |
KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4c
|
724 |
endif |
7e9501fde
|
725 |
endif |
1da177e4c
|
726 |
|
709a972ef
|
727 728 729 730 |
# Initialize all stack variables with a pattern, if desired. ifdef CONFIG_INIT_STACK_ALL KBUILD_CFLAGS += -ftrivial-auto-var-init=pattern endif |
1e88e415e
|
731 |
DEBUG_CFLAGS := $(call cc-option, -fno-var-tracking-assignments) |
2062afb4f
|
732 |
|
1da177e4c
|
733 |
ifdef CONFIG_DEBUG_INFO |
866ced950
|
734 |
ifdef CONFIG_DEBUG_INFO_SPLIT |
9d9374440
|
735 |
DEBUG_CFLAGS += -gsplit-dwarf |
866ced950
|
736 |
else |
1e88e415e
|
737 |
DEBUG_CFLAGS += -g |
866ced950
|
738 |
endif |
2288328ce
|
739 |
KBUILD_AFLAGS += -Wa,-gdwarf-2 |
1da177e4c
|
740 |
endif |
bfaf2dd35
|
741 |
ifdef CONFIG_DEBUG_INFO_DWARF4 |
9d9374440
|
742 |
DEBUG_CFLAGS += -gdwarf-4 |
bfaf2dd35
|
743 |
endif |
1da177e4c
|
744 |
|
d6f4ceb79
|
745 |
ifdef CONFIG_DEBUG_INFO_REDUCED |
1e88e415e
|
746 |
DEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
e82c4bb8b
|
747 |
$(call cc-option,-fno-var-tracking) |
d6f4ceb79
|
748 |
endif |
1e88e415e
|
749 750 |
KBUILD_CFLAGS += $(DEBUG_CFLAGS) export DEBUG_CFLAGS |
606576ce8
|
751 |
ifdef CONFIG_FUNCTION_TRACER |
07d040812
|
752 753 754 755 756 757 |
ifdef CONFIG_FTRACE_MCOUNT_RECORD # gcc 5 supports generating the mcount tables directly ifeq ($(call cc-option-yn,-mrecord-mcount),y) CC_FLAGS_FTRACE += -mrecord-mcount export CC_USING_RECORD_MCOUNT := 1 endif |
2f4df0017
|
758 759 760 761 762 763 |
ifdef CONFIG_HAVE_NOP_MCOUNT ifeq ($(call cc-option-yn, -mnop-mcount),y) CC_FLAGS_FTRACE += -mnop-mcount CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT endif endif |
07d040812
|
764 |
endif |
a2546fae0
|
765 |
ifdef CONFIG_HAVE_FENTRY |
f28bc3c32
|
766 767 768 769 |
ifeq ($(call cc-option-yn, -mfentry),y) CC_FLAGS_FTRACE += -mfentry CC_FLAGS_USING += -DCC_USING_FENTRY endif |
a2546fae0
|
770 |
endif |
f28bc3c32
|
771 772 773 |
export CC_FLAGS_FTRACE KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) KBUILD_AFLAGS += $(CC_FLAGS_USING) |
72441cb1f
|
774 |
ifdef CONFIG_DYNAMIC_FTRACE |
cf4db2597
|
775 |
ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1f
|
776 777 778 779 |
BUILD_C_RECORDMCOUNT := y export BUILD_C_RECORDMCOUNT endif endif |
16444a8a4
|
780 |
endif |
91341d4b2
|
781 782 783 784 |
# We trigger additional mismatches with less inlining ifdef CONFIG_DEBUG_SECTION_MISMATCH KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) endif |
90ad4052e
|
785 |
ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION |
e85d1d65c
|
786 787 |
KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections LDFLAGS_vmlinux += --gc-sections |
90ad4052e
|
788 |
endif |
43bd3a95c
|
789 790 791 |
ifdef CONFIG_LIVEPATCH KBUILD_CFLAGS += $(call cc-option, -flive-patching=inline-clone) endif |
e8e699317
|
792 |
# arch Makefile may override CC so keep this after arch Makefile is included |
e08d6de4e
|
793 |
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e699317
|
794 |
|
1da177e4c
|
795 |
# warn about C99 declaration after statement |
a33e7ae29
|
796 |
KBUILD_CFLAGS += -Wdeclaration-after-statement |
1da177e4c
|
797 |
|
a035d552a
|
798 |
# Warn about unmarked fall-throughs in switch statement. |
bfd77145f
|
799 |
KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,) |
a035d552a
|
800 |
|
0bb95f80a
|
801 |
# Variable Length Arrays (VLAs) should not be used anywhere in the kernel |
8289f913f
|
802 |
KBUILD_CFLAGS += -Wvla |
0bb95f80a
|
803 |
|
070b98bfd
|
804 |
# disable pointer signed / unsigned warnings in gcc 4.0 |
fb073a4b4
|
805 |
KBUILD_CFLAGS += -Wno-pointer-sign |
1da177e4c
|
806 |
|
217c3e019
|
807 808 |
# disable stringop warnings in gcc 8+ KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) |
fe8d0a410
|
809 |
# disable invalid "can't wrap" optimizations for signed / pointers |
a137802ee
|
810 |
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552c
|
811 |
|
87e0d4f0f
|
812 813 814 815 816 817 818 819 |
# clang sets -fmerge-all-constants by default as optimization, but this # is non-conforming behavior for C and in fact breaks the kernel, so we # need to disable it here generally. KBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) # for gcc -fno-merge-all-constants disables everything, but it is fine # to have actual conforming behavior enabled. KBUILD_CFLAGS += $(call cc-option,-fmerge-constants) |
3ce120b16
|
820 821 |
# Make sure -fstack-check isn't enabled (like gentoo apparently did) KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) |
8f7f5c9fc
|
822 823 |
# conserve stack if available KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
fe7c36c7b
|
824 825 |
# Prohibit date/time macros, which would make the build non-deterministic KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) |
ea8daa7b9
|
826 827 |
# enforce correct pointer usage KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) |
c834f0e8a
|
828 829 |
# Require designated initializers for all marked structures KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) |
a73619a84
|
830 831 |
# change __FILE__ to the relative path from the srctree KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) |
29be86d7f
|
832 833 834 835 836 |
# ensure -fcf-protection is disabled when using retpoline as it is # incompatible with -mindirect-branch=thunk-extern ifdef CONFIG_RETPOLINE KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none) endif |
40df759e2
|
837 838 |
# use the deterministic mode of AR if available KBUILD_ARFLAGS := $(call ar-option,D) |
a436bb7b8
|
839 840 |
include scripts/Makefile.kasan include scripts/Makefile.extrawarn |
c6d308534
|
841 |
include scripts/Makefile.ubsan |
a86fe3537
|
842 |
|
61754c187
|
843 844 845 846 847 |
# 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) $(KCFLAGS) |
52bcc3308
|
848 |
|
89ff7131f
|
849 850 |
KBUILD_LDFLAGS_MODULE += --build-id LDFLAGS_vmlinux += --build-id |
18991197b
|
851 |
|
5d7d18f5b
|
852 |
ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a27195
|
853 |
LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5b
|
854 |
endif |
145167650
|
855 856 |
# insure the checker run with the right endianness CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) |
1f2f01b12
|
857 858 |
# the checker needs the correct machine size CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) |
1da177e4c
|
859 |
# Default kernel image to build when no specific target is given. |
070b98bfd
|
860 |
# KBUILD_IMAGE may be overruled on the command line or |
1da177e4c
|
861 862 863 864 865 866 867 868 869 870 871 |
# set in the environment # Also any assignments in arch/$(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
|
872 873 874 875 876 877 878 |
# 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
|
879 880 |
# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory # relocations required by build roots. This is not defined in the |
070b98bfd
|
881 |
# makefile but the argument can be passed to make if needed. |
1da177e4c
|
882 |
# |
df9df036d
|
883 |
MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4c
|
884 |
export MODLIB |
ac031f26e
|
885 |
# |
3fbb43df9
|
886 887 888 889 |
# 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
|
890 |
|
ac031f26e
|
891 892 |
ifdef INSTALL_MOD_STRIP ifeq ($(INSTALL_MOD_STRIP),1) |
2ea038917
|
893 |
mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26e
|
894 |
else |
2ea038917
|
895 |
mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26e
|
896 897 |
endif # INSTALL_MOD_STRIP=1 else |
2ea038917
|
898 |
mod_strip_cmd = true |
ac031f26e
|
899 900 |
endif # INSTALL_MOD_STRIP export mod_strip_cmd |
beb50df39
|
901 902 903 904 905 906 907 |
# 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
|
908 |
mod_compress_cmd = gzip -n -f |
beb50df39
|
909 910 |
endif # CONFIG_MODULE_COMPRESS_GZIP ifdef CONFIG_MODULE_COMPRESS_XZ |
3d1450d54
|
911 |
mod_compress_cmd = xz -f |
beb50df39
|
912 913 914 |
endif # CONFIG_MODULE_COMPRESS_XZ endif # CONFIG_MODULE_COMPRESS export mod_compress_cmd |
d9d8d7ed4
|
915 |
ifdef CONFIG_MODULE_SIG_ALL |
3ee550f12
|
916 917 918 |
$(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
|
919 920 921 922 |
else mod_sign_cmd = true endif export mod_sign_cmd |
056d28d13
|
923 |
HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) |
9f0c18aec
|
924 925 |
ifdef CONFIG_STACK_VALIDATION has_libelf := $(call try-run,\ |
056d28d13
|
926 |
echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) |
9f0c18aec
|
927 928 929 |
ifeq ($(has_libelf),1) objtool_target := tools/objtool FORCE else |
9f0c18aec
|
930 931 932 933 |
SKIP_STACK_VALIDATION := 1 export SKIP_STACK_VALIDATION endif endif |
e00d88804
|
934 |
PHONY += prepare0 |
e2a666d52
|
935 |
|
47801c97d
|
936 |
export MODORDER := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order |
1da177e4c
|
937 |
ifeq ($(KBUILD_EXTMOD),) |
cfc411e7f
|
938 |
core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4c
|
939 940 941 |
vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
37d9fe478
|
942 |
$(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) |
1da177e4c
|
943 |
|
1eaca4b98
|
944 945 946 |
vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ $(patsubst %/,%,$(filter %/, $(init-) $(core-) \ $(drivers-) $(net-) $(libs-) $(virt-)))) |
1da177e4c
|
947 |
|
f49821ee3
|
948 949 950 951 |
init-y := $(patsubst %/, %/built-in.a, $(init-y)) core-y := $(patsubst %/, %/built-in.a, $(core-y)) drivers-y := $(patsubst %/, %/built-in.a, $(drivers-y)) net-y := $(patsubst %/, %/built-in.a, $(net-y)) |
1da177e4c
|
952 |
libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
f49821ee3
|
953 954 |
libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y))) virt-y := $(patsubst %/, %/built-in.a, $(virt-y)) |
1da177e4c
|
955 |
|
1f2bfbd00
|
956 |
# Externally visible symbols (used by link-vmlinux.sh) |
d151e9719
|
957 958 |
export KBUILD_VMLINUX_OBJS := $(head-y) $(init-y) $(core-y) $(libs-y2) \ $(drivers-y) $(net-y) $(virt-y) |
3a166fc2d
|
959 |
export KBUILD_VMLINUX_LIBS := $(libs-y1) |
956985705
|
960 |
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
1f2bfbd00
|
961 |
export LDFLAGS_vmlinux |
312a3d091
|
962 |
# used by scripts/package/Makefile |
233c741dc
|
963 |
export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) |
9bb482476
|
964 |
|
d151e9719
|
965 |
vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) |
1da177e4c
|
966 |
|
3fdc7d3fe
|
967 968 |
# Recurse until adjust_autoksyms.sh is satisfied PHONY += autoksyms_recursive |
2441e78b1
|
969 |
ifdef CONFIG_TRIM_UNUSED_KSYMS |
b7dca6dd1
|
970 |
autoksyms_recursive: $(vmlinux-deps) modules.order |
ba79d401f
|
971 |
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ |
865563924
|
972 |
"$(MAKE) -f $(srctree)/Makefile vmlinux" |
2441e78b1
|
973 |
endif |
23121ca2b
|
974 |
|
1f50b80a0
|
975 976 977 978 979 980 |
# 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 |
07a422bb2
|
981 982 983 984 985 |
autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) $(autoksyms_h): $(Q)mkdir -p $(dir $@) $(Q)touch $@ |
23121ca2b
|
986 |
|
fbe6e37da
|
987 988 989 |
ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) # Final link of vmlinux with optional arch pass after final link |
312a3d091
|
990 |
cmd_link-vmlinux = \ |
d503ac531
|
991 |
$(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \ |
fbe6e37da
|
992 |
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) |
2441e78b1
|
993 |
|
3fdc7d3fe
|
994 |
vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE |
1f2bfbd00
|
995 |
+$(call if_changed,link-vmlinux) |
741f98fe2
|
996 |
|
392885ee8
|
997 |
targets := vmlinux |
38385f8f0
|
998 |
# The actual objects are generated when descending, |
1da177e4c
|
999 |
# make sure no implicit rule kicks in |
1f2bfbd00
|
1000 |
$(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
1da177e4c
|
1001 1002 1003 1004 1005 1006 |
# 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
|
1007 |
PHONY += $(vmlinux-dirs) |
059bc9fc3
|
1008 |
$(vmlinux-dirs): prepare |
7e1319187
|
1009 |
$(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1 |
1da177e4c
|
1010 |
|
ba97df455
|
1011 |
filechk_kernel.release = \ |
0d0e7718a
|
1012 |
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
0d0e7718a
|
1013 |
|
83a35e360
|
1014 |
# Store (new) KERNELRELEASE string in include/config/kernel.release |
24512795d
|
1015 |
include/config/kernel.release: FORCE |
0d0e7718a
|
1016 |
$(call filechk,kernel.release) |
cb58455c4
|
1017 |
|
d8821622c
|
1018 1019 1020 1021 |
# Additional helpers built in scripts/ # Carefully list dependencies so we do not try to build scripts twice # in parallel PHONY += scripts |
60df1aee2
|
1022 |
scripts: scripts_basic scripts_dtc |
d8821622c
|
1023 |
$(Q)$(MAKE) $(build)=$(@) |
cb58455c4
|
1024 |
|
1da177e4c
|
1025 |
# Things we need to do before we recursively start building the kernel |
5bb782690
|
1026 1027 1028 1029 |
# 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
|
1030 |
|
30527cefb
|
1031 |
PHONY += prepare archprepare prepare3 |
5bb782690
|
1032 |
|
86feeaa81
|
1033 |
# prepare3 is used to check if we are building in a separate output directory, |
1da177e4c
|
1034 1035 |
# and if so do: # 1) Check that make has not been executed in the kernel src $(srctree) |
f1d28fb04
|
1036 |
prepare3: include/config/kernel.release |
051f278e9
|
1037 |
ifdef building_out_of_srctree |
fd54f5028
|
1038 |
@$(kecho) ' Using $(srctree) as source for kernel' |
a788b2ed8
|
1039 1040 1041 |
$(Q)if [ -f $(srctree)/.config -o \ -d $(srctree)/include/config -o \ -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ |
3a475b216
|
1042 |
echo >&2 " $(srctree) is not clean, please run 'make ARCH=$(ARCH) mrproper'"; \ |
5369f5502
|
1043 |
echo >&2 " in the '$(srctree)' directory.";\ |
1da177e4c
|
1044 1045 |
/bin/false; \ fi; |
1da177e4c
|
1046 |
endif |
30527cefb
|
1047 1048 |
archprepare: archheaders archscripts scripts prepare3 outputmakefile \ asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h |
5bb782690
|
1049 |
|
65bba0423
|
1050 |
prepare0: archprepare |
60df1aee2
|
1051 |
$(Q)$(MAKE) $(build)=scripts/mod |
8d36a6236
|
1052 |
$(Q)$(MAKE) $(build)=. |
86feeaa81
|
1053 |
|
1da177e4c
|
1054 |
# All the preparing.. |
b9ab5ebb1
|
1055 |
prepare: prepare0 prepare-objtool |
2c1f4f125
|
1056 |
# Support for using generic headers in asm-generic |
7d0e5c205
|
1057 |
asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj |
2c1f4f125
|
1058 1059 |
PHONY += asm-generic uapi-asm-generic asm-generic: uapi-asm-generic |
037fc3368
|
1060 1061 |
$(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ generic=include/asm-generic |
2c1f4f125
|
1062 |
uapi-asm-generic: |
037fc3368
|
1063 1064 |
$(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ generic=include/uapi/asm-generic |
2c1f4f125
|
1065 |
|
b9ab5ebb1
|
1066 |
PHONY += prepare-objtool |
3b27a0c85
|
1067 |
prepare-objtool: $(objtool_target) |
ef7cfd00b
|
1068 1069 1070 1071 1072 1073 1074 1075 |
ifeq ($(SKIP_STACK_VALIDATION),1) ifdef CONFIG_UNWINDER_ORC @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 @false else @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 endif endif |
1da177e4c
|
1076 |
|
1da177e4c
|
1077 1078 1079 1080 1081 1082 1083 |
# 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
|
1084 1085 1086 1087 1088 |
define filechk_utsrelease.h if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ exit 1; \ fi; \ |
ad7740863
|
1089 |
echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" |
63104eec2
|
1090 |
endef |
1da177e4c
|
1091 1092 |
define filechk_version.h |
ad7740863
|
1093 |
echo \#define LINUX_VERSION_CODE $(shell \ |
450c6076a
|
1094 |
expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
ad7740863
|
1095 |
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))' |
1da177e4c
|
1096 |
endef |
43fee2b23
|
1097 |
$(version_h): FORCE |
1da177e4c
|
1098 |
$(call filechk,version.h) |
223c24a7d
|
1099 |
$(Q)rm -f $(old_version_h) |
1da177e4c
|
1100 |
|
273b281fa
|
1101 |
include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec2
|
1102 |
$(call filechk,utsrelease.h) |
179efcb47
|
1103 1104 |
PHONY += headerdep headerdep: |
9663d9890
|
1105 1106 |
$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ $(srctree)/scripts/headerdep.pl -I$(srctree)/include |
179efcb47
|
1107 |
|
1da177e4c
|
1108 |
# --------------------------------------------------------------------------- |
8d730cfb5
|
1109 |
# Kernel headers |
8d730cfb5
|
1110 |
|
e6883b187
|
1111 1112 |
#Default location for installed headers export INSTALL_HDR_PATH = $(objtree)/usr |
6d7162758
|
1113 |
|
59b2bd05f
|
1114 1115 1116 1117 1118 |
quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include cmd_headers_install = \ mkdir -p $(INSTALL_HDR_PATH); \ rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ usr/include $(INSTALL_HDR_PATH) |
e6883b187
|
1119 |
|
8d730cfb5
|
1120 |
PHONY += headers_install |
59b2bd05f
|
1121 1122 |
headers_install: headers $(call cmd,headers_install) |
6520fe556
|
1123 |
|
59b2bd05f
|
1124 |
PHONY += archheaders archscripts |
e6883b187
|
1125 |
|
a5bae54c1
|
1126 |
hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj |
6d7162758
|
1127 |
|
59b2bd05f
|
1128 1129 |
PHONY += headers headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts |
9d022c540
|
1130 |
$(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ |
10b63956f
|
1131 |
$(error Headers not exportable for the $(SRCARCH) architecture)) |
d5470d144
|
1132 1133 |
$(Q)$(MAKE) $(hdr-inst)=include/uapi $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi |
1f85712e6
|
1134 |
|
684753599
|
1135 |
PHONY += headers_check |
59b2bd05f
|
1136 |
headers_check: headers |
d5470d144
|
1137 1138 |
$(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi HDRCHECK=1 |
684753599
|
1139 |
|
e949f4c2d
|
1140 |
ifdef CONFIG_HEADERS_INSTALL |
59b2bd05f
|
1141 |
prepare: headers |
e949f4c2d
|
1142 |
endif |
684753599
|
1143 |
|
257edce66
|
1144 1145 1146 |
ifdef CONFIG_HEADERS_CHECK all: headers_check endif |
bdd7714b6
|
1147 1148 1149 |
PHONY += scripts_unifdef scripts_unifdef: scripts_basic $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
8d730cfb5
|
1150 |
# --------------------------------------------------------------------------- |
5a5da78b3
|
1151 1152 1153 1154 |
# Kernel selftest PHONY += kselftest kselftest: |
2bc84526d
|
1155 |
$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests |
5a5da78b3
|
1156 |
|
801d2e9f1
|
1157 |
PHONY += kselftest-clean |
dcb825a9f
|
1158 |
kselftest-clean: |
2bc84526d
|
1159 |
$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean |
dcb825a9f
|
1160 |
|
3d6dee7af
|
1161 1162 1163 |
PHONY += kselftest-merge kselftest-merge: $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) |
6d3db46c8
|
1164 1165 |
$(Q)find $(srctree)/tools/testing/selftests -name config | \ xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config |
3d6dee7af
|
1166 |
+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig |
5a5da78b3
|
1167 |
# --------------------------------------------------------------------------- |
37c8a5faf
|
1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 |
# Devicetree files ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) dtstree := arch/$(SRCARCH)/boot/dts endif ifneq ($(dtstree),) %.dtb: prepare3 scripts_dtc $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ |
4f0e3a57d
|
1178 1179 |
PHONY += dtbs dtbs_install dt_binding_check dtbs dtbs_check: prepare3 scripts_dtc |
37c8a5faf
|
1180 |
$(Q)$(MAKE) $(build)=$(dtstree) |
4f0e3a57d
|
1181 1182 |
dtbs_check: export CHECK_DTBS=1 dtbs_check: dt_binding_check |
37c8a5faf
|
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 |
dtbs_install: $(Q)$(MAKE) $(dtbinst)=$(dtstree) ifdef CONFIG_OF_EARLY_FLATTREE all: dtbs endif endif PHONY += scripts_dtc scripts_dtc: scripts_basic $(Q)$(MAKE) $(build)=scripts/dtc |
4f0e3a57d
|
1195 1196 |
dt_binding_check: scripts_dtc $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings |
37c8a5faf
|
1197 |
# --------------------------------------------------------------------------- |
1da177e4c
|
1198 1199 1200 |
# Modules ifdef CONFIG_MODULES |
070b98bfd
|
1201 |
# By default, build modules as well |
1da177e4c
|
1202 |
|
73d1393eb
|
1203 |
all: modules |
1da177e4c
|
1204 |
|
3fbb43df9
|
1205 |
# Build modules |
551559e13
|
1206 |
# |
3fbb43df9
|
1207 1208 1209 |
# 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
|
1210 |
|
4f1933620
|
1211 |
PHONY += modules |
68980b470
|
1212 |
modules: $(if $(KBUILD_BUILTIN),vmlinux) modules.order modules.builtin |
fd54f5028
|
1213 |
@$(kecho) ' Building modules, stage 2.'; |
b805aa0e7
|
1214 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
3a48a9190
|
1215 |
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh |
1da177e4c
|
1216 |
|
68980b470
|
1217 1218 |
modules.order: $(vmlinux-dirs) $(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(vmlinux-dirs)) > $@ |
50ef0cdf5
|
1219 |
modbuiltin-dirs := $(addprefix _modbuiltin_, $(vmlinux-dirs)) |
a6c366324
|
1220 |
|
50ef0cdf5
|
1221 1222 |
modules.builtin: $(modbuiltin-dirs) $(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(vmlinux-dirs)) > $@ |
a6c366324
|
1223 |
|
50ef0cdf5
|
1224 1225 1226 1227 1228 |
PHONY += $(modbuiltin-dirs) # tristate.conf is not included from this Makefile. Add it as a prerequisite # here to make it self-healing in case somebody accidentally removes it. $(modbuiltin-dirs): include/config/tristate.conf $(Q)$(MAKE) $(modbuiltin)=$(patsubst _modbuiltin_%,%,$@) |
1da177e4c
|
1229 1230 |
# Target to prepare building external modules |
4f1933620
|
1231 |
PHONY += modules_prepare |
059bc9fc3
|
1232 |
modules_prepare: prepare |
1da177e4c
|
1233 1234 |
# Target to install modules |
4f1933620
|
1235 |
PHONY += modules_install |
1da177e4c
|
1236 |
modules_install: _modinst_ _modinst_post |
4f1933620
|
1237 |
PHONY += _modinst_ |
2da30e703
|
1238 |
_modinst_: |
1da177e4c
|
1239 1240 1241 |
@rm -rf $(MODLIB)/kernel @rm -f $(MODLIB)/source @mkdir -p $(MODLIB)/kernel |
8e9b46679
|
1242 |
@ln -s $(abspath $(srctree)) $(MODLIB)/source |
1da177e4c
|
1243 1244 |
@if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ rm -f $(MODLIB)/build ; \ |
7e1c04779
|
1245 |
ln -s $(CURDIR) $(MODLIB)/build ; \ |
1da177e4c
|
1246 |
fi |
1bd9a4680
|
1247 1248 |
@sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order @sed 's:^:kernel/:' modules.builtin > $(MODLIB)/modules.builtin |
898490c01
|
1249 |
@cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ |
b805aa0e7
|
1250 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4c
|
1251 |
|
50a8ec31c
|
1252 |
# This depmod is only for convenience to give the initial |
1da177e4c
|
1253 1254 |
# boot a modules.dep even before / is mounted read-write. However the # boot script depmod is the master version. |
4f1933620
|
1255 |
PHONY += _modinst_post |
6d128e1e7
|
1256 |
_modinst_post: _modinst_ |
50a8ec31c
|
1257 |
$(call cmd,depmod) |
1da177e4c
|
1258 |
|
d890f510c
|
1259 1260 1261 1262 1263 |
ifeq ($(CONFIG_MODULE_SIG), y) PHONY += modules_sign modules_sign: $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign endif |
1da177e4c
|
1264 1265 1266 1267 |
else # CONFIG_MODULES # Modules not configured # --------------------------------------------------------------------------- |
612e47cec
|
1268 1269 |
PHONY += modules modules_install modules modules_install: |
5369f5502
|
1270 1271 1272 1273 1274 |
@echo >&2 @echo >&2 "The present kernel configuration has modules disabled." @echo >&2 "Type 'make config' and enable loadable module support." @echo >&2 "Then build a kernel with module support enabled." @echo >&2 |
1da177e4c
|
1275 1276 1277 |
@exit 1 endif # CONFIG_MODULES |
1da177e4c
|
1278 1279 1280 1281 1282 1283 1284 1285 |
### # Cleaning is done on three levels. # make clean Delete most generated files # Leave enough to build external modules # make mrproper Delete the current configuration, and all generated files # make distclean Remove editor backup files, patch leftover files and the like # Directories & files removed with 'make clean' |
b7dca6dd1
|
1286 |
CLEAN_DIRS += include/ksym |
898490c01
|
1287 |
CLEAN_FILES += modules.builtin.modinfo |
1da177e4c
|
1288 1289 |
# Directories & files removed with 'make mrproper' |
d6fc9fcba
|
1290 |
MRPROPER_DIRS += include/config include/generated \ |
a788b2ed8
|
1291 |
arch/$(SRCARCH)/include/generated .tmp_objdiff |
278ae6040
|
1292 |
MRPROPER_FILES += .config .config.old .version \ |
46457133a
|
1293 |
Module.symvers \ |
fb1179499
|
1294 1295 |
signing_key.pem signing_key.priv signing_key.x509 \ x509.genkey extra_certificates signing_key.x509.keyid \ |
3ee7b3fa2
|
1296 |
signing_key.x509.signer vmlinux-gdb.py |
1da177e4c
|
1297 |
|
46457133a
|
1298 1299 1300 |
# Directories & files removed with 'make distclean' DISTCLEAN_DIRS += DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS |
1da177e4c
|
1301 1302 1303 1304 |
# clean - Delete most, but leave enough to build external modules # clean: rm-dirs := $(CLEAN_DIRS) clean: rm-files := $(CLEAN_FILES) |
1eaca4b98
|
1305 |
clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs)) |
1da177e4c
|
1306 |
|
bd1ee804a
|
1307 |
PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1da177e4c
|
1308 1309 |
$(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
bd1ee804a
|
1310 1311 |
vmlinuxclean: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean |
fbe6e37da
|
1312 |
$(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) |
bd1ee804a
|
1313 1314 |
clean: archclean vmlinuxclean |
1da177e4c
|
1315 1316 1317 1318 1319 |
# mrproper - Delete all generated files, including .config # mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
cb43fb577
|
1320 |
mrproper-dirs := $(addprefix _mrproper_,scripts) |
1da177e4c
|
1321 |
|
b421b8a6c
|
1322 |
PHONY += $(mrproper-dirs) mrproper |
1da177e4c
|
1323 1324 |
$(mrproper-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
b421b8a6c
|
1325 |
mrproper: clean $(mrproper-dirs) |
1da177e4c
|
1326 1327 1328 1329 1330 |
$(call cmd,rmdirs) $(call cmd,rmfiles) # distclean # |
46457133a
|
1331 1332 |
distclean: rm-dirs := $(wildcard $(DISTCLEAN_DIRS)) distclean: rm-files := $(wildcard $(DISTCLEAN_FILES)) |
4f1933620
|
1333 |
PHONY += distclean |
1da177e4c
|
1334 1335 |
distclean: mrproper |
46457133a
|
1336 1337 |
$(call cmd,rmdirs) $(call cmd,rmfiles) |
1da177e4c
|
1338 |
@find $(srctree) $(RCS_FIND_IGNORE) \ |
070b98bfd
|
1339 |
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
f78271dfb
|
1340 1341 |
-o -name '*.bak' -o -name '#*#' -o -name '*%' \ -o -name 'core' \) \ |
1da177e4c
|
1342 1343 1344 1345 1346 |
-type f -print | xargs rm -f # Packaging of the kernel to various formats # --------------------------------------------------------------------------- |
c79624c1a
|
1347 |
package-dir := scripts/package |
1da177e4c
|
1348 |
|
bafb67470
|
1349 1350 |
%src-pkg: FORCE $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6de
|
1351 |
%pkg: include/config/kernel.release FORCE |
6c2133e11
|
1352 |
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4c
|
1353 1354 1355 1356 |
# Brief documentation of the typical targets used # --------------------------------------------------------------------------- |
5dffbe811
|
1357 |
boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
a1e7b7bb1
|
1358 |
boards := $(sort $(notdir $(boards))) |
5dffbe811
|
1359 1360 |
board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) board-dirs := $(sort $(notdir $(board-dirs:/=))) |
1da177e4c
|
1361 |
|
fe69b420d
|
1362 |
PHONY += help |
1da177e4c
|
1363 1364 |
help: @echo 'Cleaning targets:' |
5ea084ef9
|
1365 |
@echo ' clean - Remove most generated files but keep the config and' |
5cc8d246d
|
1366 |
@echo ' enough build support to build external modules' |
5ea084ef9
|
1367 |
@echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246d
|
1368 |
@echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4c
|
1369 1370 1371 1372 1373 1374 1375 1376 |
@echo '' @echo 'Configuration targets:' @$(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
|
1377 |
@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
1da177e4c
|
1378 |
@echo ' dir/ - Build all files in dir and below' |
40ab87a40
|
1379 |
@echo ' dir/file.[ois] - Build specified target only' |
433db3e26
|
1380 1381 |
@echo ' dir/file.ll - Build the LLVM assembly file' @echo ' (requires compiler support for LLVM assembly generation)' |
627189797
|
1382 1383 |
@echo ' dir/file.lst - Build specified mixed source/assembly target only' @echo ' (requires a recent binutils and recent build (System.map))' |
155ad605b
|
1384 |
@echo ' dir/file.ko - Build module including final link' |
c4d5ee67c
|
1385 |
@echo ' modules_prepare - Set up for building external modules' |
1da177e4c
|
1386 1387 |
@echo ' tags/TAGS - Generate tags file for editors' @echo ' cscope - Generate cscope index' |
f4ed1009f
|
1388 |
@echo ' gtags - Generate GNU GLOBAL index' |
3f1d9a6ce
|
1389 1390 1391 |
@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
|
1392 |
@echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230f
|
1393 |
echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd9
|
1394 |
echo '' |
31b8cc807
|
1395 |
@echo 'Static analysers:' |
1da177e4c
|
1396 1397 |
@echo ' checkstack - Generate a list of stack hogs' @echo ' namespacecheck - Name space analysis on compiled kernel' |
aa025e7d5
|
1398 |
@echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f9
|
1399 |
@echo ' includecheck - Check for duplicate included header files' |
295ac0518
|
1400 |
@echo ' export_report - List the usages of all exported symbols' |
179efcb47
|
1401 |
@echo ' headers_check - Sanity check on exported headers' |
74425eee7
|
1402 |
@echo ' headerdep - Detect inclusion cycles in headers' |
7f855fc80
|
1403 |
@echo ' coccicheck - Check with Coccinelle' |
74425eee7
|
1404 |
@echo '' |
31b8cc807
|
1405 |
@echo 'Kernel selftest:' |
5a5da78b3
|
1406 1407 1408 |
@echo ' kselftest - Build and run kernel selftest (run as root)' @echo ' Build, install, and boot kernel before' @echo ' running kselftest on it' |
dcb825a9f
|
1409 |
@echo ' kselftest-clean - Remove all generated kselftest files' |
bbfe63b60
|
1410 |
@echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' |
3d6dee7af
|
1411 |
@echo ' .config.' |
5a5da78b3
|
1412 |
@echo '' |
37c8a5faf
|
1413 1414 1415 1416 1417 |
@$(if $(dtstree), \ echo 'Devicetree:'; \ echo '* dtbs - Build device tree blobs for enabled boards'; \ echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ echo '') |
31b8cc807
|
1418 1419 1420 1421 |
@echo 'Userspace tools targets:' @echo ' use "make tools/help"' @echo ' or "cd tools; make help"' @echo '' |
1da177e4c
|
1422 |
@echo 'Kernel packaging:' |
6c2133e11
|
1423 |
@$(MAKE) $(build)=$(package-dir) help |
1da177e4c
|
1424 1425 |
@echo '' @echo 'Documentation targets:' |
cb43fb577
|
1426 |
@$(MAKE) -f $(srctree)/Documentation/Makefile dochelp |
1da177e4c
|
1427 |
@echo '' |
01dee1881
|
1428 |
@echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4c
|
1429 |
@$(if $(archhelp),$(archhelp),\ |
01dee1881
|
1430 |
echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4c
|
1431 1432 1433 1434 1435 1436 |
@echo '' @$(if $(boards), \ $(foreach b, $(boards), \ printf " %-24s - Build for %s\ " $(b) $(subst _defconfig,,$(b));) \ echo '') |
5dffbe811
|
1437 1438 1439 1440 1441 1442 1443 |
@$(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
|
1444 1445 |
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
45d506bd6
|
1446 |
@echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4c
|
1447 |
@echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
9ba26a728
|
1448 |
@echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' |
701842e3b
|
1449 |
@echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
af07ce3e7
|
1450 |
@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
28bc20dcc
|
1451 1452 1453 1454 |
@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
|
1455 |
@echo ' Multiple levels can be combined with W=12 or W=123' |
1da177e4c
|
1456 1457 1458 |
@echo '' @echo 'Execute "make" or "make all" to build all targets marked with [*] ' @echo 'For further info see the ./README file' |
5dffbe811
|
1459 1460 1461 |
help-board-dirs := $(addprefix help-,$(board-dirs)) help-boards: $(help-board-dirs) |
fbae4d585
|
1462 |
boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) |
5dffbe811
|
1463 1464 1465 1466 1467 1468 1469 1470 |
$(help-board-dirs): help-%: @echo 'Architecture specific targets ($(SRCARCH) $*):' @$(if $(boards-per-dir), \ $(foreach b, $(boards-per-dir), \ printf " %-24s - Build for %s\ " $*/$(b) $(subst _defconfig,,$(b));) \ echo '') |
1da177e4c
|
1471 1472 |
# Documentation targets # --------------------------------------------------------------------------- |
e8939222d
|
1473 1474 |
DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ linkcheckdocs dochelp refcheckdocs |
22cba31ba
|
1475 1476 |
PHONY += $(DOC_TARGETS) $(DOC_TARGETS): scripts_basic FORCE |
cb43fb577
|
1477 |
$(Q)$(MAKE) $(build)=Documentation $@ |
1da177e4c
|
1478 |
|
67274c083
|
1479 1480 1481 1482 |
# Misc # --------------------------------------------------------------------------- PHONY += scripts_gdb |
7a739ce51
|
1483 |
scripts_gdb: prepare0 |
1e5ff84ff
|
1484 |
$(Q)$(MAKE) $(build)=scripts/gdb |
8d2e52003
|
1485 |
$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) |
67274c083
|
1486 1487 1488 1489 |
ifdef CONFIG_GDB_SCRIPTS all: scripts_gdb endif |
1da177e4c
|
1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 |
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
|
1506 |
# Install the modules built in the module directory |
1da177e4c
|
1507 1508 1509 1510 |
# Assumes install directory is already created # We are always building modules KBUILD_MODULES := 1 |
1da177e4c
|
1511 |
|
4f1933620
|
1512 |
PHONY += $(objtree)/Module.symvers |
1da177e4c
|
1513 1514 1515 1516 1517 1518 1519 1520 |
$(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
|
1521 |
PHONY += $(module-dirs) modules |
e07db28ee
|
1522 |
$(module-dirs): prepare $(objtree)/Module.symvers |
7e1319187
|
1523 |
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) need-modorder=1 |
1da177e4c
|
1524 1525 |
modules: $(module-dirs) |
fd54f5028
|
1526 |
@$(kecho) ' Building modules, stage 2.'; |
b805aa0e7
|
1527 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4c
|
1528 |
|
4f1933620
|
1529 |
PHONY += modules_install |
a67dc21a3
|
1530 |
modules_install: _emodinst_ _emodinst_post |
e63046630
|
1531 |
|
4f1933620
|
1532 1533 |
install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) PHONY += _emodinst_ |
a67dc21a3
|
1534 |
_emodinst_: |
a67dc21a3
|
1535 |
$(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e7
|
1536 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4c
|
1537 |
|
4f1933620
|
1538 |
PHONY += _emodinst_post |
a67dc21a3
|
1539 1540 |
_emodinst_post: _emodinst_ $(call cmd,depmod) |
1da177e4c
|
1541 |
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
4f1933620
|
1542 |
PHONY += $(clean-dirs) clean |
1da177e4c
|
1543 1544 |
$(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
88d7be031
|
1545 |
clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4c
|
1546 |
|
fe69b420d
|
1547 |
PHONY += help |
1da177e4c
|
1548 1549 1550 1551 1552 1553 1554 1555 |
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
|
1556 |
|
059bc9fc3
|
1557 |
PHONY += prepare |
1da177e4c
|
1558 |
endif # KBUILD_EXTMOD |
88d7be031
|
1559 1560 1561 |
clean: $(clean-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) |
43f67c981
|
1562 |
@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
ef46d9b3d
|
1563 |
\( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ |
4f0e3a57d
|
1564 1565 |
-o -name '*.ko.*' \ -o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ |
ef46d9b3d
|
1566 |
-o -name '*.dwo' -o -name '*.lst' \ |
b7dca6dd1
|
1567 |
-o -name '*.su' -o -name '*.mod' \ |
88d7be031
|
1568 |
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
9a8dfb394
|
1569 |
-o -name '*.lex.c' -o -name '*.tab.[ch]' \ |
4fa8bc949
|
1570 |
-o -name '*.asn1.[ch]' \ |
88d7be031
|
1571 1572 |
-o -name '*.symtypes' -o -name 'modules.order' \ -o -name modules.builtin -o -name '.tmp_*.o.*' \ |
6b90bd4ba
|
1573 |
-o -name '*.c.[012]*.*' \ |
433db3e26
|
1574 |
-o -name '*.ll' \ |
88d7be031
|
1575 |
-o -name '*.gcno' \) -type f -print | xargs rm -f |
1da177e4c
|
1576 1577 |
# Generate tags for editors # --------------------------------------------------------------------------- |
a680eedc6
|
1578 1579 |
quiet_cmd_tags = GEN $@ cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
1da177e4c
|
1580 |
|
f4ed1009f
|
1581 |
tags TAGS cscope gtags: FORCE |
1da177e4c
|
1582 |
$(call cmd,tags) |
1da177e4c
|
1583 1584 |
# Scripts to check various things for consistency # --------------------------------------------------------------------------- |
279f3dd35
|
1585 |
PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1da177e4c
|
1586 |
includecheck: |
436f876cc
|
1587 |
find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4c
|
1588 |
-name '*.[hcS]' -type f -print | sort \ |
800074345
|
1589 |
| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4c
|
1590 1591 |
versioncheck: |
2ee2d2928
|
1592 |
find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4c
|
1593 |
-name '*.[hcS]' -type f -print | sort \ |
800074345
|
1594 |
| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4c
|
1595 |
|
74425eee7
|
1596 1597 |
coccicheck: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
1da177e4c
|
1598 1599 |
namespacecheck: $(PERL) $(srctree)/scripts/namespace.pl |
295ac0518
|
1600 1601 |
export_report: $(PERL) $(srctree)/scripts/export_report.pl |
c398ff00f
|
1602 |
PHONY += checkstack kernelrelease kernelversion image_name |
e3ccf6e36
|
1603 |
|
011e3a9ad
|
1604 1605 1606 1607 1608 1609 1610 1611 1612 |
# 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
|
1613 1614 |
checkstack: $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
75dd47472
|
1615 |
$(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4c
|
1616 |
|
7b8ea53d7
|
1617 1618 |
kernelrelease: @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
01ab17887
|
1619 |
|
cb58455c4
|
1620 |
kernelversion: |
2244cbd8a
|
1621 |
@echo $(KERNELVERSION) |
1da177e4c
|
1622 |
|
c398ff00f
|
1623 1624 |
image_name: @echo $(KBUILD_IMAGE) |
ea01fa9f6
|
1625 |
# Clear a bunch of variables before executing the submake |
f47a23ce2
|
1626 1627 1628 1629 |
ifeq ($(quiet),silent_) tools_silent=s endif |
ea01fa9f6
|
1630 |
tools/: FORCE |
bf35182ff
|
1631 |
$(Q)mkdir -p $(objtree)/tools |
75dd47472
|
1632 |
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ |
ea01fa9f6
|
1633 1634 |
tools/%: FORCE |
bf35182ff
|
1635 |
$(Q)mkdir -p $(objtree)/tools |
75dd47472
|
1636 |
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* |
ea01fa9f6
|
1637 |
|
06300b21f
|
1638 1639 |
# Single targets # --------------------------------------------------------------------------- |
bc2546a67
|
1640 |
# Single targets are compatible with: |
e1b8513d2
|
1641 |
# - build with mixed source and output |
bc2546a67
|
1642 1643 1644 1645 1646 |
# - build with separate output dir 'make O=...' # - external modules # # target-dir => where to store outputfile # build-dir => directory in kernel source tree to use |
6b12de69a
|
1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 |
build-target = $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD)/)$@ build-dir = $(patsubst %/,%,$(dir $(build-target))) %.i: prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) %.ll: prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) %.lst: prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) %.o: prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) %.s: prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) %.symtypes: prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) |
47801c97d
|
1662 1663 1664 1665 1666 1667 1668 1669 1670 |
ifeq ($(KBUILD_EXTMOD),) # For the single build of an in-tree module, use a temporary file to avoid # the situation of modules_install installing an invalid modules.order. %.ko: MODORDER := .modules.tmp endif %.ko: prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(build-target:.ko=.mod) $(Q)echo $(build-target) > $(MODORDER) $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21f
|
1671 |
|
bc2546a67
|
1672 |
# Modules |
6d3c94e4a
|
1673 1674 |
PHONY += / /: ./ |
059bc9fc3
|
1675 |
%/: prepare FORCE |
c07d8d47b
|
1676 |
$(Q)$(MAKE) KBUILD_MODULES=1 $(build)=$(build-dir) need-modorder=1 |
06300b21f
|
1677 |
|
38385f8f0
|
1678 |
# FIXME Should go into a make.lib or something |
1da177e4c
|
1679 1680 1681 1682 1683 1684 1685 |
# =========================================================================== 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
|
1686 |
# Run depmod only if we have System.map and depmod is executable |
50a8ec31c
|
1687 |
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
569658ddd
|
1688 |
cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
5a144a1ac
|
1689 |
$(KERNELRELEASE) |
50a8ec31c
|
1690 |
|
392885ee8
|
1691 1692 |
# read saved command lines for existing targets existing-targets := $(wildcard $(sort $(targets))) |
1da177e4c
|
1693 |
|
b999923c2
|
1694 |
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) |
1da177e4c
|
1695 |
|
25815cf5f
|
1696 1697 |
endif # ifeq ($(config-targets),1) endif # ifeq ($(mixed-targets),1) |
688931a5a
|
1698 |
endif # need-sub-make |
1da177e4c
|
1699 |
|
4f1933620
|
1700 |
PHONY += FORCE |
1da177e4c
|
1701 |
FORCE: |
4f1933620
|
1702 |
|
bd412d81b
|
1703 |
# Declare the contents of the PHONY variable as phony. We keep that |
fe8d0a410
|
1704 |
# information in a variable so we can use it in if_changed and friends. |
4f1933620
|
1705 |
.PHONY: $(PHONY) |