Linus Torvalds | 55922c9 | 2011-05-29 17:43:36 -0700 | [diff] [blame] | 1 | VERSION = 3 |
Linus Torvalds | 38dbfb5 | 2014-02-02 16:42:13 -0800 | [diff] [blame] | 2 | PATCHLEVEL = 14 |
Linus Torvalds | 55922c9 | 2011-05-29 17:43:36 -0700 | [diff] [blame] | 3 | SUBLEVEL = 0 |
Linus Torvalds | 38dbfb5 | 2014-02-02 16:42:13 -0800 | [diff] [blame] | 4 | EXTRAVERSION = -rc1 |
| 5 | NAME = Shuffling Zombie Juror |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
| 7 | # *DOCUMENTATION* |
| 8 | # To see a list of typical targets execute "make help" |
| 9 | # More info can be located in ./README |
| 10 | # Comments in this file are targeted only to the developer, do not |
| 11 | # expect to learn how to build the kernel reading this file. |
| 12 | |
Oleg Verych | 1596486 | 2006-12-10 02:18:40 -0800 | [diff] [blame] | 13 | # Do not: |
| 14 | # o use make's built-in rules and variables |
Linus Nilsson | d384e35 | 2008-01-20 17:10:01 +0100 | [diff] [blame] | 15 | # (this increases performance and avoids hard-to-debug behaviour); |
Oleg Verych | 1596486 | 2006-12-10 02:18:40 -0800 | [diff] [blame] | 16 | # o print "Entering directory ..."; |
| 17 | MAKEFLAGS += -rR --no-print-directory |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
H. Peter Anvin | c051346 | 2009-12-17 06:56:11 -0800 | [diff] [blame] | 19 | # Avoid funny character set dependencies |
H. Peter Anvin | 06b5dc6 | 2009-12-17 15:51:37 -0800 | [diff] [blame] | 20 | unexport LC_ALL |
H. Peter Anvin | c051346 | 2009-12-17 06:56:11 -0800 | [diff] [blame] | 21 | LC_COLLATE=C |
| 22 | LC_NUMERIC=C |
Michal Marek | 0710520 | 2010-01-08 12:25:37 +0100 | [diff] [blame] | 23 | export LC_COLLATE LC_NUMERIC |
H. Peter Anvin | c051346 | 2009-12-17 06:56:11 -0800 | [diff] [blame] | 24 | |
Borislav Petkov | ab7474e | 2013-11-11 15:27:43 +0100 | [diff] [blame] | 25 | # Avoid interference with shell env settings |
| 26 | unexport GREP_OPTIONS |
| 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | # We are using a recursive build, so we need to do a little thinking |
| 29 | # to get the ordering right. |
| 30 | # |
| 31 | # Most importantly: sub-Makefiles should only ever modify files in |
| 32 | # their own directory. If in some directory we have a dependency on |
| 33 | # a file in another dir (which doesn't happen often, but it's often |
| 34 | # unavoidable when linking the built-in.o targets which finally |
| 35 | # turn into vmlinux), we will call a sub make in that other dir, and |
| 36 | # after that we are sure that everything which is in that other dir |
| 37 | # is now up to date. |
| 38 | # |
| 39 | # The only cases where we need to modify files which have global |
| 40 | # effects are thus separated out and done before the recursive |
| 41 | # descending is started. They are now explicitly listed as the |
| 42 | # prepare rule. |
| 43 | |
| 44 | # To put more focus on warnings, be less verbose as default |
| 45 | # Use 'make V=1' to see the full commands |
| 46 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 47 | ifeq ("$(origin V)", "command line") |
| 48 | KBUILD_VERBOSE = $(V) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | endif |
| 50 | ifndef KBUILD_VERBOSE |
| 51 | KBUILD_VERBOSE = 0 |
| 52 | endif |
| 53 | |
Robert P. J. Day | 1c7bafe | 2006-09-13 07:57:50 -0400 | [diff] [blame] | 54 | # Call a source code checker (by default, "sparse") as part of the |
| 55 | # C compilation. |
| 56 | # |
| 57 | # Use 'make C=1' to enable checking of only re-compiled files. |
| 58 | # Use 'make C=2' to enable checking of *all* source files, regardless |
| 59 | # of whether they are re-compiled or not. |
| 60 | # |
| 61 | # See the file "Documentation/sparse.txt" for more details, including |
| 62 | # where to get the "sparse" utility. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 64 | ifeq ("$(origin C)", "command line") |
| 65 | KBUILD_CHECKSRC = $(C) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | endif |
| 67 | ifndef KBUILD_CHECKSRC |
| 68 | KBUILD_CHECKSRC = 0 |
| 69 | endif |
| 70 | |
| 71 | # Use make M=dir to specify directory of external module to build |
| 72 | # Old syntax make ... SUBDIRS=$PWD is still supported |
| 73 | # Setting the environment variable KBUILD_EXTMOD take precedence |
| 74 | ifdef SUBDIRS |
| 75 | KBUILD_EXTMOD ?= $(SUBDIRS) |
| 76 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 78 | ifeq ("$(origin M)", "command line") |
| 79 | KBUILD_EXTMOD := $(M) |
| 80 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | # kbuild supports saving output files in a separate directory. |
| 83 | # To locate output files in a separate directory two syntaxes are supported. |
| 84 | # In both cases the working directory must be the root of the kernel src. |
| 85 | # 1) O= |
| 86 | # Use "make O=dir/to/store/output/files/" |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 87 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | # 2) Set KBUILD_OUTPUT |
| 89 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
| 90 | # where the output files shall be placed. |
| 91 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
| 92 | # make |
| 93 | # |
| 94 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
| 95 | # variable. |
| 96 | |
| 97 | |
| 98 | # KBUILD_SRC is set on invocation of make in OBJ directory |
| 99 | # KBUILD_SRC is not intended to be used by the regular user (for now) |
| 100 | ifeq ($(KBUILD_SRC),) |
| 101 | |
| 102 | # OK, Make called in directory where kernel src resides |
| 103 | # Do we want to locate output files in a separate directory? |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 104 | ifeq ("$(origin O)", "command line") |
| 105 | KBUILD_OUTPUT := $(O) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | endif |
| 107 | |
Borislav Petkov | 4a5838a | 2011-03-01 09:35:29 +0100 | [diff] [blame] | 108 | ifeq ("$(origin W)", "command line") |
Sam Ravnborg | 28bc20d | 2011-04-27 22:15:27 +0200 | [diff] [blame] | 109 | export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) |
Borislav Petkov | 4a5838a | 2011-03-01 09:35:29 +0100 | [diff] [blame] | 110 | endif |
| 111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | # That's our default target when none is given on the command line |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 113 | PHONY := _all |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | _all: |
| 115 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 116 | # Cancel implicit rules on top Makefile |
| 117 | $(CURDIR)/Makefile Makefile: ; |
| 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | ifneq ($(KBUILD_OUTPUT),) |
| 120 | # Invoke a second make in the output directory, passing relevant variables |
| 121 | # check that the output directory actually exists |
| 122 | saved-output := $(KBUILD_OUTPUT) |
| 123 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) |
| 124 | $(if $(KBUILD_OUTPUT),, \ |
| 125 | $(error output directory "$(saved-output)" does not exist)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 127 | PHONY += $(MAKECMDGOALS) sub-make |
| 128 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 129 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
Charles Keepax | 16f8909 | 2012-10-15 13:49:12 +0100 | [diff] [blame] | 130 | @: |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 131 | |
| 132 | sub-make: FORCE |
Sam Ravnborg | 23a45e2 | 2005-07-27 09:12:07 +0200 | [diff] [blame] | 133 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
| 134 | KBUILD_SRC=$(CURDIR) \ |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 135 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
| 136 | $(filter-out _all sub-make,$(MAKECMDGOALS)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
| 138 | # Leave processing to above invocation of make |
| 139 | skip-makefile := 1 |
| 140 | endif # ifneq ($(KBUILD_OUTPUT),) |
| 141 | endif # ifeq ($(KBUILD_SRC),) |
| 142 | |
| 143 | # We process the rest of the Makefile if this is the final invocation of make |
| 144 | ifeq ($(skip-makefile),) |
| 145 | |
| 146 | # If building an external module we do not care about the all: rule |
| 147 | # but instead _all depend on modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 148 | PHONY += all |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | ifeq ($(KBUILD_EXTMOD),) |
| 150 | _all: all |
| 151 | else |
| 152 | _all: modules |
| 153 | endif |
| 154 | |
| 155 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | objtree := $(CURDIR) |
| 157 | src := $(srctree) |
| 158 | obj := $(objtree) |
| 159 | |
Mattia Dongili | 0f558c3 | 2006-02-19 13:50:37 +0100 | [diff] [blame] | 160 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Amerigo Wang | 1129423 | 2009-06-19 03:40:26 -0400 | [diff] [blame] | 162 | export srctree objtree VPATH |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
| 165 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
| 166 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
| 167 | # line overrides the setting of ARCH below. If a native build is happening, |
| 168 | # then ARCH is assigned, getting whatever value it gets normally, and |
| 169 | # SUBARCH is subsequently ignored. |
| 170 | |
David Woodhouse | ffee0de | 2012-12-20 21:51:55 +0000 | [diff] [blame] | 171 | SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ |
| 172 | -e s/sun4u/sparc64/ \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
Linus Torvalds | 39990b5 | 2005-11-11 14:27:32 -0800 | [diff] [blame] | 174 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
Paul Mundt | 236b195 | 2007-11-02 12:22:47 +0900 | [diff] [blame] | 175 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
Will Deacon | f1b9939 | 2013-01-18 19:00:47 +0000 | [diff] [blame] | 176 | -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
| 178 | # Cross compiling and selecting different set of gcc/bin-utils |
| 179 | # --------------------------------------------------------------------------- |
| 180 | # |
| 181 | # When performing cross compilation for other architectures ARCH shall be set |
| 182 | # to the target architecture. (See arch/* for the possibilities). |
| 183 | # ARCH can be set during invocation of make: |
| 184 | # make ARCH=ia64 |
| 185 | # Another way is to have ARCH set in the environment. |
| 186 | # The default ARCH is the host where make is executed. |
| 187 | |
| 188 | # CROSS_COMPILE specify the prefix used for all executables used |
| 189 | # during compilation. Only gcc and related bin-utils executables |
| 190 | # are prefixed with $(CROSS_COMPILE). |
| 191 | # CROSS_COMPILE can be set on the command line |
| 192 | # make CROSS_COMPILE=ia64-linux- |
| 193 | # Alternatively CROSS_COMPILE can be set in the environment. |
Roland McGrath | 8433646 | 2009-12-21 16:24:06 -0800 | [diff] [blame] | 194 | # A third alternative is to store a setting in .config so that plain |
| 195 | # "make" in the configured kernel build directory always uses that. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | # Default value for CROSS_COMPILE is not to prefix executables |
| 197 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
Sam Ravnborg | 2331d1a | 2009-10-11 23:22:58 +0200 | [diff] [blame] | 198 | ARCH ?= $(SUBARCH) |
Roland McGrath | 8433646 | 2009-12-21 16:24:06 -0800 | [diff] [blame] | 199 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
| 201 | # Architecture as present in compile.h |
Thomas Gleixner | 6752ed9 | 2007-10-11 11:11:36 +0200 | [diff] [blame] | 202 | UTS_MACHINE := $(ARCH) |
| 203 | SRCARCH := $(ARCH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
Sam Ravnborg | d746d64 | 2007-11-12 20:14:19 +0100 | [diff] [blame] | 205 | # Additional ARCH settings for x86 |
| 206 | ifeq ($(ARCH),i386) |
| 207 | SRCARCH := x86 |
| 208 | endif |
| 209 | ifeq ($(ARCH),x86_64) |
| 210 | SRCARCH := x86 |
| 211 | endif |
Sam Ravnborg | 74b469f | 2007-10-25 19:42:04 +0200 | [diff] [blame] | 212 | |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 213 | # Additional ARCH settings for sparc |
Namhyung Kim | e69f58c | 2010-10-25 05:48:23 +0000 | [diff] [blame] | 214 | ifeq ($(ARCH),sparc32) |
| 215 | SRCARCH := sparc |
| 216 | endif |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 217 | ifeq ($(ARCH),sparc64) |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 218 | SRCARCH := sparc |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 219 | endif |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 220 | |
Paul Mundt | 3cc000b | 2009-04-11 08:39:27 +0900 | [diff] [blame] | 221 | # Additional ARCH settings for sh |
| 222 | ifeq ($(ARCH),sh64) |
| 223 | SRCARCH := sh |
| 224 | endif |
| 225 | |
Chris Metcalf | 18aecc2 | 2011-05-04 14:38:26 -0400 | [diff] [blame] | 226 | # Additional ARCH settings for tile |
Chris Metcalf | 6738d32 | 2011-05-25 15:24:00 -0400 | [diff] [blame] | 227 | ifeq ($(ARCH),tilepro) |
| 228 | SRCARCH := tile |
| 229 | endif |
Chris Metcalf | 18aecc2 | 2011-05-04 14:38:26 -0400 | [diff] [blame] | 230 | ifeq ($(ARCH),tilegx) |
| 231 | SRCARCH := tile |
| 232 | endif |
| 233 | |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 234 | # Where to locate arch specific headers |
| 235 | hdr-arch := $(SRCARCH) |
| 236 | |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 237 | KCONFIG_CONFIG ?= .config |
Ben Gardiner | 41263fc | 2010-12-14 11:39:44 -0500 | [diff] [blame] | 238 | export KCONFIG_CONFIG |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | # SHELL used by kbuild |
| 241 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
| 242 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
| 243 | else echo sh; fi ; fi) |
| 244 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 245 | HOSTCC = gcc |
| 246 | HOSTCXX = g++ |
Josh Triplett | 25583d4 | 2009-11-15 14:38:47 -0800 | [diff] [blame] | 247 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 248 | HOSTCXXFLAGS = -O2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 250 | # Decide whether to build built-in, modular, or both. |
| 251 | # Normally, just do built-in. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
| 253 | KBUILD_MODULES := |
| 254 | KBUILD_BUILTIN := 1 |
| 255 | |
| 256 | # If we have only "make modules", don't compile built-in objects. |
| 257 | # When we're building modules with modversions, we need to consider |
| 258 | # the built-in objects during the descend as well, in order to |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 259 | # make sure the checksums are up to date before we record them. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | ifeq ($(MAKECMDGOALS),modules) |
| 262 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
| 263 | endif |
| 264 | |
| 265 | # If we have "make <whatever> modules", compile modules |
| 266 | # in addition to whatever we do anyway. |
| 267 | # Just "make" or "make all" shall build modules as well |
| 268 | |
| 269 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
| 270 | KBUILD_MODULES := 1 |
| 271 | endif |
| 272 | |
| 273 | ifeq ($(MAKECMDGOALS),) |
| 274 | KBUILD_MODULES := 1 |
| 275 | endif |
| 276 | |
Sam Ravnborg | e579d35 | 2005-07-27 08:10:10 +0200 | [diff] [blame] | 277 | export KBUILD_MODULES KBUILD_BUILTIN |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
| 279 | |
| 280 | # Beautify output |
| 281 | # --------------------------------------------------------------------------- |
| 282 | # |
| 283 | # Normally, we echo the whole command before executing it. By making |
| 284 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
| 285 | # $(quiet) to choose other forms of output instead, e.g. |
| 286 | # |
| 287 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
| 288 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
| 289 | # |
| 290 | # If $(quiet) is empty, the whole command will be printed. |
| 291 | # If it is set to "quiet_", only the short version will be printed. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 292 | # If it is set to "silent_", nothing will be printed at all, since |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
| 294 | # |
Adrian Bunk | a58a414 | 2006-01-10 00:08:17 +0100 | [diff] [blame] | 295 | # A simple variant is to prefix commands with $(Q) - that's useful |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | # for commands that shall be hidden in non-verbose mode. |
| 297 | # |
| 298 | # $(Q)ln $@ :< |
| 299 | # |
| 300 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
| 301 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
| 302 | |
| 303 | ifeq ($(KBUILD_VERBOSE),1) |
| 304 | quiet = |
| 305 | Q = |
| 306 | else |
| 307 | quiet=quiet_ |
| 308 | Q = @ |
| 309 | endif |
| 310 | |
| 311 | # If the user is running make -s (silent mode), suppress echoing of |
| 312 | # commands |
| 313 | |
Emil Medve | e36aaea | 2014-01-06 02:58:40 -0600 | [diff] [blame] | 314 | ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 |
| 315 | ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) |
| 316 | quiet=silent_ |
| 317 | endif |
| 318 | else # make-3.8x |
Jason Wessel | e6ac89f | 2012-01-05 16:46:30 -0600 | [diff] [blame] | 319 | ifneq ($(filter s% -s%,$(MAKEFLAGS)),) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | quiet=silent_ |
| 321 | endif |
Emil Medve | e36aaea | 2014-01-06 02:58:40 -0600 | [diff] [blame] | 322 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | |
| 324 | export quiet Q KBUILD_VERBOSE |
| 325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
| 327 | # Look for make include files relative to root of kernel src |
| 328 | MAKEFLAGS += --include-dir=$(srctree) |
| 329 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 330 | # We need some generic definitions (do not try to remake the file). |
| 331 | $(srctree)/scripts/Kbuild.include: ; |
Oleg Verych | 1596486 | 2006-12-10 02:18:40 -0800 | [diff] [blame] | 332 | include $(srctree)/scripts/Kbuild.include |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
| 334 | # Make variables (CC, etc...) |
| 335 | |
| 336 | AS = $(CROSS_COMPILE)as |
| 337 | LD = $(CROSS_COMPILE)ld |
| 338 | CC = $(CROSS_COMPILE)gcc |
| 339 | CPP = $(CC) -E |
| 340 | AR = $(CROSS_COMPILE)ar |
| 341 | NM = $(CROSS_COMPILE)nm |
| 342 | STRIP = $(CROSS_COMPILE)strip |
| 343 | OBJCOPY = $(CROSS_COMPILE)objcopy |
| 344 | OBJDUMP = $(CROSS_COMPILE)objdump |
| 345 | AWK = awk |
| 346 | GENKSYMS = scripts/genksyms/genksyms |
Sam Ravnborg | caa27b6 | 2009-07-20 21:37:11 +0200 | [diff] [blame] | 347 | INSTALLKERNEL := installkernel |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | DEPMOD = /sbin/depmod |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | PERL = perl |
| 350 | CHECK = sparse |
| 351 | |
Hannes Eder | 80a7d1d9 | 2008-12-27 22:38:44 +0100 | [diff] [blame] | 352 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
| 353 | -Wbitwise -Wno-return-void $(CF) |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 354 | CFLAGS_MODULE = |
| 355 | AFLAGS_MODULE = |
| 356 | LDFLAGS_MODULE = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | CFLAGS_KERNEL = |
| 358 | AFLAGS_KERNEL = |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 359 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
| 361 | |
David Howells | abbf159 | 2012-10-02 18:01:26 +0100 | [diff] [blame] | 362 | # Use USERINCLUDE when you must reference the UAPI directories only. |
| 363 | USERINCLUDE := \ |
| 364 | -I$(srctree)/arch/$(hdr-arch)/include/uapi \ |
| 365 | -Iarch/$(hdr-arch)/include/generated/uapi \ |
| 366 | -I$(srctree)/include/uapi \ |
| 367 | -Iinclude/generated/uapi \ |
| 368 | -include $(srctree)/include/linux/kconfig.h |
| 369 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | # Use LINUXINCLUDE when you must reference the include/ directory. |
| 371 | # Needed to be compatible with the O= option |
David Howells | abbf159 | 2012-10-02 18:01:26 +0100 | [diff] [blame] | 372 | LINUXINCLUDE := \ |
| 373 | -I$(srctree)/arch/$(hdr-arch)/include \ |
| 374 | -Iarch/$(hdr-arch)/include/generated \ |
| 375 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
| 376 | -Iinclude \ |
| 377 | $(USERINCLUDE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 379 | KBUILD_CPPFLAGS := -D__KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 381 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
Dave Jones | 94bed2a | 2007-07-15 23:41:38 -0700 | [diff] [blame] | 382 | -fno-strict-aliasing -fno-common \ |
Floris Kraak | a873582 | 2009-06-15 08:54:02 +0300 | [diff] [blame] | 383 | -Werror-implicit-function-declaration \ |
Eugene Teo | a3ca86a | 2009-07-15 14:59:10 +0800 | [diff] [blame] | 384 | -Wno-format-security \ |
| 385 | -fno-delete-null-pointer-checks |
Sam Ravnborg | 80c00ba | 2010-07-28 19:11:27 +0200 | [diff] [blame] | 386 | KBUILD_AFLAGS_KERNEL := |
| 387 | KBUILD_CFLAGS_KERNEL := |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 388 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 389 | KBUILD_AFLAGS_MODULE := -DMODULE |
| 390 | KBUILD_CFLAGS_MODULE := -DMODULE |
| 391 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 393 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
| 394 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
Michal Marek | cacd54e | 2011-05-30 13:36:07 +0200 | [diff] [blame] | 395 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 396 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 397 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
Sam Ravnborg | 80ef88d | 2007-11-17 15:37:31 +0100 | [diff] [blame] | 398 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
Sam Ravnborg | caa27b6 | 2009-07-20 21:37:11 +0200 | [diff] [blame] | 399 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
| 400 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 401 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | |
Sam Ravnborg | 06c5040 | 2007-10-15 22:17:25 +0200 | [diff] [blame] | 403 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 404 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 405 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 406 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
Sam Ravnborg | 80c00ba | 2010-07-28 19:11:27 +0200 | [diff] [blame] | 407 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
Michal Marek | 40df759 | 2011-04-20 13:45:30 +0200 | [diff] [blame] | 408 | export KBUILD_ARFLAGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | # When compiling out-of-tree modules, put MODVERDIR in the module |
| 411 | # tree rather than in the kernel tree. The kernel tree might |
| 412 | # even be read-only. |
| 413 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
| 414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | # Files to ignore in find ... statements |
| 416 | |
Jesper Juhl | 450c607 | 2012-02-16 22:49:15 +0100 | [diff] [blame] | 417 | RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \ |
| 418 | -o -name .pc -o -name .hg -o -name .git \) -prune -o |
| 419 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ |
| 420 | --exclude CVS --exclude .pc --exclude .hg --exclude .git |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
| 422 | # =========================================================================== |
| 423 | # Rules shared between *config targets and build targets |
| 424 | |
| 425 | # Basic helpers built in scripts/ |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 426 | PHONY += scripts_basic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | scripts_basic: |
| 428 | $(Q)$(MAKE) $(build)=scripts/basic |
Steven Rostedt | 638adb0 | 2009-11-17 10:48:25 -0500 | [diff] [blame] | 429 | $(Q)rm -f .tmp_quiet_recordmcount |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | |
Jan Beulich | cd05e6b | 2005-09-06 11:47:04 +0200 | [diff] [blame] | 431 | # To avoid any implicit rule to kick in, define an empty command. |
| 432 | scripts/basic/%: scripts_basic ; |
| 433 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 434 | PHONY += outputmakefile |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 435 | # outputmakefile generates a Makefile in the output directory, if using a |
| 436 | # separate output directory. This allows convenient use of make in the |
| 437 | # output directory. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | outputmakefile: |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 439 | ifneq ($(KBUILD_SRC),) |
Andi Kleen | 9297999 | 2009-01-10 04:56:13 +0100 | [diff] [blame] | 440 | $(Q)ln -fsn $(srctree) source |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 441 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
| 442 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
| 443 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
Sam Ravnborg | d8ecc5c | 2011-04-27 22:29:49 +0200 | [diff] [blame] | 445 | # Support for using generic headers in asm-generic |
| 446 | PHONY += asm-generic |
| 447 | asm-generic: |
| 448 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
Catalin Marinas | 3c5994c | 2012-10-17 12:25:44 +0100 | [diff] [blame] | 449 | src=asm obj=arch/$(SRCARCH)/include/generated/asm |
| 450 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
| 451 | src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm |
Sam Ravnborg | d8ecc5c | 2011-04-27 22:29:49 +0200 | [diff] [blame] | 452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | # To make sure we do not include .config for any of the *config targets |
| 454 | # catch them early, and hand them over to scripts/kconfig/Makefile |
| 455 | # It is allowed to specify more targets when calling make, including |
| 456 | # mixing *config targets and build targets. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 457 | # For example 'make oldconfig all'. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | # Detect when mixed targets is specified, and make a second invocation |
| 459 | # of make so .config is not included in this case either (for *config). |
| 460 | |
David Howells | 10b6395 | 2012-10-02 18:01:57 +0100 | [diff] [blame] | 461 | version_h := include/generated/uapi/linux/version.h |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 462 | |
Roman Zippel | 3eb3c74 | 2007-01-10 14:45:28 +0100 | [diff] [blame] | 463 | no-dot-config-targets := clean mrproper distclean \ |
Jianbin Kang | f4ed100 | 2011-01-14 20:07:05 +0800 | [diff] [blame] | 464 | cscope gtags TAGS tags help %docs check% coccicheck \ |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 465 | $(version_h) headers_% archheaders archscripts \ |
Linus Torvalds | 4aed2fd | 2010-08-06 09:30:52 -0700 | [diff] [blame] | 466 | kernelversion %src-pkg |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
| 468 | config-targets := 0 |
| 469 | mixed-targets := 0 |
| 470 | dot-config := 1 |
| 471 | |
| 472 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
| 473 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
| 474 | dot-config := 0 |
| 475 | endif |
| 476 | endif |
| 477 | |
| 478 | ifeq ($(KBUILD_EXTMOD),) |
| 479 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
| 480 | config-targets := 1 |
| 481 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
| 482 | mixed-targets := 1 |
| 483 | endif |
| 484 | endif |
| 485 | endif |
| 486 | |
| 487 | ifeq ($(mixed-targets),1) |
| 488 | # =========================================================================== |
| 489 | # We're called with mixed targets (*config and build targets). |
| 490 | # Handle them one by one. |
| 491 | |
| 492 | %:: FORCE |
| 493 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ |
| 494 | |
| 495 | else |
| 496 | ifeq ($(config-targets),1) |
| 497 | # =========================================================================== |
| 498 | # *config targets only - make sure prerequisites are updated, and descend |
| 499 | # in scripts/kconfig to make the *config target |
| 500 | |
| 501 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
| 502 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
| 503 | # used for 'make defconfig' |
Sam Ravnborg | 74b469f | 2007-10-25 19:42:04 +0200 | [diff] [blame] | 504 | include $(srctree)/arch/$(SRCARCH)/Makefile |
Al Viro | 61bee20 | 2008-08-25 04:51:27 -0400 | [diff] [blame] | 505 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 507 | config: scripts_basic outputmakefile FORCE |
| 508 | $(Q)mkdir -p include/linux include/config |
| 509 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 510 | |
| 511 | %config: scripts_basic outputmakefile FORCE |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 512 | $(Q)mkdir -p include/linux include/config |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 514 | |
| 515 | else |
| 516 | # =========================================================================== |
| 517 | # Build targets only - this includes vmlinux, arch specific targets, clean |
| 518 | # targets and others. In general all targets except *config targets. |
| 519 | |
| 520 | ifeq ($(KBUILD_EXTMOD),) |
| 521 | # Additional helpers built in scripts/ |
| 522 | # Carefully list dependencies so we do not try to build scripts twice |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 523 | # in parallel |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 524 | PHONY += scripts |
Andreas Schwab | a54292f | 2013-04-09 19:57:00 +0200 | [diff] [blame] | 525 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
| 526 | asm-generic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | $(Q)$(MAKE) $(build)=$(@) |
| 528 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | # Objects we will link into vmlinux / subdirs we need to visit |
| 530 | init-y := init/ |
David Woodhouse | 4d2acfb | 2008-05-23 13:58:12 +0100 | [diff] [blame] | 531 | drivers-y := drivers/ sound/ firmware/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | net-y := net/ |
| 533 | libs-y := lib/ |
| 534 | core-y := usr/ |
| 535 | endif # KBUILD_EXTMOD |
| 536 | |
| 537 | ifeq ($(dot-config),1) |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 538 | # Read in config |
| 539 | -include include/config/auto.conf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 541 | ifeq ($(KBUILD_EXTMOD),) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | # Read in dependencies to all Kconfig* files, make sure to run |
| 543 | # oldconfig if changes are detected. |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 544 | -include include/config/auto.conf.cmd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | # To avoid any implicit rule to kick in, define an empty command |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 547 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 549 | # If .config is newer than include/config/auto.conf, someone tinkered |
Sam Ravnborg | 752625c | 2005-12-26 23:34:03 +0100 | [diff] [blame] | 550 | # with it and forgot to run make oldconfig. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 551 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
Sam Ravnborg | 752625c | 2005-12-26 23:34:03 +0100 | [diff] [blame] | 552 | # we execute the config step to be sure to catch updated Kconfig files |
Michal Marek | bc081dd | 2009-12-07 16:38:33 +0100 | [diff] [blame] | 553 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
| 555 | else |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 556 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 557 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
| 558 | PHONY += include/config/auto.conf |
| 559 | |
| 560 | include/config/auto.conf: |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 561 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
Michal Marek | 5369f55 | 2012-07-07 23:04:40 +0200 | [diff] [blame] | 562 | echo >&2; \ |
| 563 | echo >&2 " ERROR: Kernel configuration is invalid."; \ |
| 564 | echo >&2 " include/generated/autoconf.h or $@ are missing.";\ |
| 565 | echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
| 566 | echo >&2 ; \ |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 567 | /bin/false) |
| 568 | |
| 569 | endif # KBUILD_EXTMOD |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 570 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | else |
| 572 | # Dummy target needed, because used as prerequisite |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 573 | include/config/auto.conf: ; |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 574 | endif # $(dot-config) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
| 576 | # The all: target is the default when no target is given on the |
| 577 | # command line. |
| 578 | # This allow a user to issue only 'make' to build a kernel including modules |
Michal Marek | c844716 | 2010-06-03 10:54:58 +0200 | [diff] [blame] | 579 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | all: vmlinux |
| 581 | |
| 582 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
Arnd Bergmann | e74fc97 | 2013-02-15 21:23:58 +0100 | [diff] [blame] | 583 | KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | else |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 585 | KBUILD_CFLAGS += -O2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | endif |
| 587 | |
Paul Mundt | a1f42be | 2012-06-18 13:48:08 +0900 | [diff] [blame] | 588 | include $(srctree)/arch/$(SRCARCH)/Makefile |
| 589 | |
Andi Kleen | 1873e87 | 2012-03-28 11:51:18 -0700 | [diff] [blame] | 590 | ifdef CONFIG_READABLE_ASM |
| 591 | # Disable optimizations that make assembler listings hard to read. |
| 592 | # reorder blocks reorders the control in the function |
| 593 | # ipa clone creates specialized cloned functions |
| 594 | # partial inlining inlines only parts of functions |
| 595 | KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ |
| 596 | $(call cc-option,-fno-ipa-cp-clone,) \ |
| 597 | $(call cc-option,-fno-partial-inlining) |
| 598 | endif |
| 599 | |
Mike Frysinger | 08f6746 | 2009-06-04 16:29:08 -0700 | [diff] [blame] | 600 | ifneq ($(CONFIG_FRAME_WARN),0) |
Andi Kleen | 35bb5b1 | 2008-02-22 15:15:03 +0100 | [diff] [blame] | 601 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
| 602 | endif |
| 603 | |
Kees Cook | 19952a9 | 2013-12-19 11:35:58 -0800 | [diff] [blame] | 604 | # Handle stack protector mode. |
Kees Cook | 8779657 | 2013-12-19 11:35:59 -0800 | [diff] [blame] | 605 | ifdef CONFIG_CC_STACKPROTECTOR_REGULAR |
Kees Cook | 19952a9 | 2013-12-19 11:35:58 -0800 | [diff] [blame] | 606 | stackp-flag := -fstack-protector |
| 607 | ifeq ($(call cc-option, $(stackp-flag)),) |
| 608 | $(warning Cannot use CONFIG_CC_STACKPROTECTOR: \ |
| 609 | -fstack-protector not supported by compiler)) |
| 610 | endif |
Kees Cook | 8779657 | 2013-12-19 11:35:59 -0800 | [diff] [blame] | 611 | else ifdef CONFIG_CC_STACKPROTECTOR_STRONG |
| 612 | stackp-flag := -fstack-protector-strong |
| 613 | ifeq ($(call cc-option, $(stackp-flag)),) |
| 614 | $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ |
| 615 | -fstack-protector-strong not supported by compiler) |
| 616 | endif |
Kees Cook | 19952a9 | 2013-12-19 11:35:58 -0800 | [diff] [blame] | 617 | else |
| 618 | # Force off for distro compilers that enable stack protector by default. |
| 619 | stackp-flag := $(call cc-option, -fno-stack-protector) |
Tejun Heo | 5d707e9 | 2009-02-09 22:17:39 +0900 | [diff] [blame] | 620 | endif |
Kees Cook | 19952a9 | 2013-12-19 11:35:58 -0800 | [diff] [blame] | 621 | KBUILD_CFLAGS += $(stackp-flag) |
Sam Ravnborg | e06b8b9 | 2008-02-13 22:43:28 +0100 | [diff] [blame] | 622 | |
Dave Jones | af0e5d5 | 2011-04-21 17:28:13 -0400 | [diff] [blame] | 623 | # This warning generated too much noise in a regular build. |
| 624 | # Use make W=1 to enable this warning (see scripts/Makefile.build) |
Michal Marek | 8417da6f | 2011-05-02 12:51:15 +0200 | [diff] [blame] | 625 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
Dave Jones | af0e5d5 | 2011-04-21 17:28:13 -0400 | [diff] [blame] | 626 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | ifdef CONFIG_FRAME_POINTER |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 628 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | else |
Rabin Vincent | 7e9501f | 2010-08-10 19:20:53 +0100 | [diff] [blame] | 630 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
| 631 | # pointers. For those, we don't have FUNCTION_TRACER automatically |
| 632 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is |
| 633 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use |
| 634 | # -fomit-frame-pointer with FUNCTION_TRACER. |
| 635 | ifndef CONFIG_FUNCTION_TRACER |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 636 | KBUILD_CFLAGS += -fomit-frame-pointer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | endif |
Rabin Vincent | 7e9501f | 2010-08-10 19:20:53 +0100 | [diff] [blame] | 638 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | |
| 640 | ifdef CONFIG_DEBUG_INFO |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 641 | KBUILD_CFLAGS += -g |
Geoff Levand | 7db4363 | 2013-12-11 23:34:40 +0000 | [diff] [blame] | 642 | KBUILD_AFLAGS += -Wa,--gdwarf-2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | endif |
| 644 | |
Andi Kleen | d6f4ceb | 2010-07-14 15:43:52 +0200 | [diff] [blame] | 645 | ifdef CONFIG_DEBUG_INFO_REDUCED |
Andi Kleen | e82c4bb | 2013-02-07 13:58:40 -0800 | [diff] [blame] | 646 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
| 647 | $(call cc-option,-fno-var-tracking) |
Andi Kleen | d6f4ceb | 2010-07-14 15:43:52 +0200 | [diff] [blame] | 648 | endif |
| 649 | |
Steven Rostedt | 606576c | 2008-10-06 19:06:12 -0400 | [diff] [blame] | 650 | ifdef CONFIG_FUNCTION_TRACER |
Steven Rostedt | a2546fa | 2011-02-09 13:15:59 -0500 | [diff] [blame] | 651 | ifdef CONFIG_HAVE_FENTRY |
| 652 | CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) |
| 653 | endif |
| 654 | KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) |
| 655 | KBUILD_AFLAGS += $(CC_USING_FENTRY) |
Steven Rostedt | 72441cb | 2010-10-13 17:12:30 -0400 | [diff] [blame] | 656 | ifdef CONFIG_DYNAMIC_FTRACE |
Steven Rostedt | cf4db25 | 2010-10-14 23:32:44 -0400 | [diff] [blame] | 657 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
Steven Rostedt | 72441cb | 2010-10-13 17:12:30 -0400 | [diff] [blame] | 658 | BUILD_C_RECORDMCOUNT := y |
| 659 | export BUILD_C_RECORDMCOUNT |
| 660 | endif |
| 661 | endif |
Arnaldo Carvalho de Melo | 16444a8 | 2008-05-12 21:20:42 +0200 | [diff] [blame] | 662 | endif |
| 663 | |
Sam Ravnborg | 91341d4 | 2008-01-21 21:31:44 +0100 | [diff] [blame] | 664 | # We trigger additional mismatches with less inlining |
| 665 | ifdef CONFIG_DEBUG_SECTION_MISMATCH |
| 666 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) |
| 667 | endif |
| 668 | |
Sam Ravnborg | e8e6993 | 2005-04-30 16:51:42 -0700 | [diff] [blame] | 669 | # arch Makefile may override CC so keep this after arch Makefile is included |
Rik van Riel | e8f5bdb0 | 2005-05-16 21:53:46 -0700 | [diff] [blame] | 670 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
Sam Ravnborg | e8e6993 | 2005-04-30 16:51:42 -0700 | [diff] [blame] | 671 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
| 672 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | # warn about C99 declaration after statement |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 674 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 676 | # disable pointer signed / unsigned warnings in gcc 4.0 |
Michal Marek | 8417da6f | 2011-05-02 12:51:15 +0200 | [diff] [blame] | 677 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | |
Kirill Smelkov | fe8d0a4 | 2009-04-09 15:34:34 +0400 | [diff] [blame] | 679 | # disable invalid "can't wrap" optimizations for signed / pointers |
Linus Torvalds | a137802 | 2009-07-12 11:25:04 -0700 | [diff] [blame] | 680 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
Linus Torvalds | d011555 | 2009-03-19 15:53:19 -0700 | [diff] [blame] | 681 | |
Andi Kleen | 8f7f5c9 | 2009-09-18 12:49:37 -0700 | [diff] [blame] | 682 | # conserve stack if available |
| 683 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
| 684 | |
Sergei Trofimovich | 8097047 | 2013-09-13 14:51:40 -0700 | [diff] [blame] | 685 | # disallow errors like 'EXPORT_GPL(foo);' with missing header |
| 686 | KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) |
| 687 | |
| 688 | # require functions to have arguments in prototypes, not empty 'int foo()' |
| 689 | KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) |
| 690 | |
Josh Triplett | fe7c36c | 2013-12-23 13:56:06 -0800 | [diff] [blame] | 691 | # Prohibit date/time macros, which would make the build non-deterministic |
| 692 | KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) |
| 693 | |
Michal Marek | 40df759 | 2011-04-20 13:45:30 +0200 | [diff] [blame] | 694 | # use the deterministic mode of AR if available |
| 695 | KBUILD_ARFLAGS := $(call ar-option,D) |
| 696 | |
Jason Baron | bf5438fc | 2010-09-17 11:09:00 -0400 | [diff] [blame] | 697 | # check for 'asm goto' |
| 698 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) |
| 699 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO |
| 700 | endif |
| 701 | |
Sam Ravnborg | 06c5040 | 2007-10-15 22:17:25 +0200 | [diff] [blame] | 702 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
Ozan Çağlayan | 70cfe02 | 2012-08-14 19:00:54 +0300 | [diff] [blame] | 703 | KBUILD_CPPFLAGS += $(KCPPFLAGS) |
| 704 | KBUILD_AFLAGS += $(KAFLAGS) |
| 705 | KBUILD_CFLAGS += $(KCFLAGS) |
Sam Ravnborg | 52bcc33 | 2007-10-15 22:03:58 +0200 | [diff] [blame] | 706 | |
Roland McGrath | 1899119 | 2007-07-19 01:48:40 -0700 | [diff] [blame] | 707 | # Use --build-id when available. |
| 708 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |
Sam Ravnborg | f86fd30 | 2009-09-19 10:14:33 +0200 | [diff] [blame] | 709 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 710 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
Roland McGrath | 1899119 | 2007-07-19 01:48:40 -0700 | [diff] [blame] | 711 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
| 712 | |
David Howells | 5d7d18f | 2009-03-04 11:59:07 -0800 | [diff] [blame] | 713 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
Andi Kleen | d79a271 | 2009-09-16 22:36:55 +0200 | [diff] [blame] | 714 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
David Howells | 5d7d18f | 2009-03-04 11:59:07 -0800 | [diff] [blame] | 715 | endif |
| 716 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | # Default kernel image to build when no specific target is given. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 718 | # KBUILD_IMAGE may be overruled on the command line or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | # set in the environment |
| 720 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
| 721 | # this default value |
| 722 | export KBUILD_IMAGE ?= vmlinux |
| 723 | |
| 724 | # |
| 725 | # INSTALL_PATH specifies where to place the updated kernel and system map |
| 726 | # images. Default is /boot, but you can set it to other values |
| 727 | export INSTALL_PATH ?= /boot |
| 728 | |
| 729 | # |
Jason Cooper | f4d4ffc | 2013-12-01 23:56:28 +0000 | [diff] [blame^] | 730 | # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. |
| 731 | # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as |
| 732 | # an argument if needed. Otherwise it defaults to the kernel install path |
| 733 | # |
| 734 | export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) |
| 735 | |
| 736 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
| 738 | # relocations required by build roots. This is not defined in the |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 739 | # makefile but the argument can be passed to make if needed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | # |
| 741 | |
Sam Ravnborg | df9df03 | 2006-01-16 12:46:07 +0100 | [diff] [blame] | 742 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | export MODLIB |
| 744 | |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 745 | # |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 746 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
| 747 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then |
| 748 | # the default option --strip-debug will be used. Otherwise, |
Gilles Espinasse | 177b241 | 2011-01-09 08:59:49 +0100 | [diff] [blame] | 749 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 750 | |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 751 | ifdef INSTALL_MOD_STRIP |
| 752 | ifeq ($(INSTALL_MOD_STRIP),1) |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 753 | mod_strip_cmd = $(STRIP) --strip-debug |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 754 | else |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 755 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 756 | endif # INSTALL_MOD_STRIP=1 |
| 757 | else |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 758 | mod_strip_cmd = true |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 759 | endif # INSTALL_MOD_STRIP |
| 760 | export mod_strip_cmd |
| 761 | |
P J P | 1bf49dd | 2013-11-12 15:11:44 -0800 | [diff] [blame] | 762 | # Select initial ramdisk compression format, default is gzip(1). |
| 763 | # This shall be used by the dracut(8) tool while creating an initramfs image. |
| 764 | # |
Jan Beulich | 7ac1815 | 2013-12-18 17:08:57 -0800 | [diff] [blame] | 765 | INITRD_COMPRESS-y := gzip |
| 766 | INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 |
| 767 | INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma |
| 768 | INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz |
| 769 | INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo |
| 770 | INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 |
Linus Torvalds | b7000ad | 2013-12-20 16:52:45 -0800 | [diff] [blame] | 771 | # do not export INITRD_COMPRESS, since we didn't actually |
| 772 | # choose a sane default compression above. |
| 773 | # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
Michal Marek | d9d8d7e | 2013-01-25 13:41:31 +1030 | [diff] [blame] | 775 | ifdef CONFIG_MODULE_SIG_ALL |
Rusty Russell | e2a666d | 2012-10-19 11:53:15 +1030 | [diff] [blame] | 776 | MODSECKEY = ./signing_key.priv |
| 777 | MODPUBKEY = ./signing_key.x509 |
| 778 | export MODPUBKEY |
Michal Marek | 4bc9410 | 2013-01-25 13:41:12 +1030 | [diff] [blame] | 779 | mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) |
Rusty Russell | e2a666d | 2012-10-19 11:53:15 +1030 | [diff] [blame] | 780 | else |
| 781 | mod_sign_cmd = true |
| 782 | endif |
| 783 | export mod_sign_cmd |
| 784 | |
| 785 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | ifeq ($(KBUILD_EXTMOD),) |
Jens Axboe | 3a65dfe | 2005-11-04 08:43:35 +0100 | [diff] [blame] | 787 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | |
| 789 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
| 790 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
| 791 | $(net-y) $(net-m) $(libs-y) $(libs-m))) |
| 792 | |
| 793 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
| 794 | $(init-n) $(init-) \ |
| 795 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ |
| 796 | $(net-n) $(net-) $(libs-n) $(libs-)))) |
| 797 | |
| 798 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
| 799 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
| 800 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
| 801 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
| 802 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
| 803 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
| 804 | libs-y := $(libs-y1) $(libs-y2) |
| 805 | |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 806 | # Externally visible symbols (used by link-vmlinux.sh) |
Sam Ravnborg | 9569857 | 2012-05-05 10:18:40 +0200 | [diff] [blame] | 807 | export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
| 808 | export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) |
| 809 | export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 810 | export LDFLAGS_vmlinux |
Michal Marek | 6615d6c | 2013-04-12 14:12:50 +0200 | [diff] [blame] | 811 | # used by scripts/pacmage/Makefile |
| 812 | export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 814 | vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 816 | # Final link of vmlinux |
| 817 | cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) |
| 818 | quiet_cmd_link-vmlinux = LINK $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 820 | # Include targets which we want to |
| 821 | # execute if the rest of the kernel build went well. |
| 822 | vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE |
David Woodhouse | 0f836e5f | 2006-10-11 01:21:43 -0700 | [diff] [blame] | 823 | ifdef CONFIG_HEADERS_CHECK |
David Woodhouse | 0e7af8d04 | 2006-10-13 16:04:23 +0100 | [diff] [blame] | 824 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
David Woodhouse | 0f836e5f | 2006-10-11 01:21:43 -0700 | [diff] [blame] | 825 | endif |
Mathieu Desnoyers | 267c402 | 2007-10-18 23:41:07 -0700 | [diff] [blame] | 826 | ifdef CONFIG_SAMPLES |
| 827 | $(Q)$(MAKE) $(build)=samples |
| 828 | endif |
Randy Dunlap | 3794f3e | 2008-08-12 15:09:06 -0700 | [diff] [blame] | 829 | ifdef CONFIG_BUILD_DOCSRC |
| 830 | $(Q)$(MAKE) $(build)=Documentation |
| 831 | endif |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 832 | +$(call if_changed,link-vmlinux) |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | # The actual objects are generated when descending, |
| 835 | # make sure no implicit rule kicks in |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 836 | $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | |
| 838 | # Handle descending into subdirectories listed in $(vmlinux-dirs) |
| 839 | # Preset locale variables to speed up the build process. Limit locale |
| 840 | # tweaks to this spot to avoid wrong language settings when running |
| 841 | # make menuconfig etc. |
| 842 | # Error messages still appears in the original language |
| 843 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 844 | PHONY += $(vmlinux-dirs) |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 845 | $(vmlinux-dirs): prepare scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | $(Q)$(MAKE) $(build)=$@ |
| 847 | |
Michal Marek | 0d0e771 | 2013-07-11 15:34:51 +0200 | [diff] [blame] | 848 | define filechk_kernel.release |
| 849 | echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
| 850 | endef |
| 851 | |
Geert Uytterhoeven | 83a35e3 | 2013-06-28 11:27:31 +0200 | [diff] [blame] | 852 | # Store (new) KERNELRELEASE string in include/config/kernel.release |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 853 | include/config/kernel.release: include/config/auto.conf FORCE |
Michal Marek | 0d0e771 | 2013-07-11 15:34:51 +0200 | [diff] [blame] | 854 | $(call filechk,kernel.release) |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 855 | |
| 856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | # Things we need to do before we recursively start building the kernel |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 858 | # or the modules are listed in "prepare". |
| 859 | # A multi level approach is used. prepareN is processed before prepareN-1. |
| 860 | # archprepare is used in arch Makefiles and when processed asm symlink, |
| 861 | # version.h and scripts_basic is processed / created. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 863 | # Listed in dependency order |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 864 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 865 | |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 866 | # prepare3 is used to check if we are building in a separate output directory, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | # and if so do: |
| 868 | # 1) Check that make has not been executed in the kernel src $(srctree) |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 869 | prepare3: include/config/kernel.release |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | ifneq ($(KBUILD_SRC),) |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 871 | @$(kecho) ' Using $(srctree) as source for kernel' |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 872 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
Michal Marek | 5369f55 | 2012-07-07 23:04:40 +0200 | [diff] [blame] | 873 | echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
| 874 | echo >&2 " in the '$(srctree)' directory.";\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | /bin/false; \ |
| 876 | fi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | endif |
| 878 | |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 879 | # prepare2 creates a makefile if using a separate output directory |
Sam Ravnborg | d8ecc5c | 2011-04-27 22:29:49 +0200 | [diff] [blame] | 880 | prepare2: prepare3 outputmakefile asm-generic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 882 | prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
Sam Ravnborg | f7f16b7 | 2009-10-18 00:00:43 +0200 | [diff] [blame] | 883 | include/config/auto.conf |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 884 | $(cmd_crmodverdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | |
H. Peter Anvin | 6520fe5 | 2012-05-08 21:22:24 +0300 | [diff] [blame] | 886 | archprepare: archheaders archscripts prepare1 scripts_basic |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 887 | |
| 888 | prepare0: archprepare FORCE |
Sam Ravnborg | 8d36a62 | 2005-09-10 21:05:36 +0200 | [diff] [blame] | 889 | $(Q)$(MAKE) $(build)=. |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 890 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | # All the preparing.. |
Robert P. J. Day | d395efb | 2007-02-14 00:33:01 -0800 | [diff] [blame] | 892 | prepare: prepare0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | # Generate some files |
| 895 | # --------------------------------------------------------------------------- |
| 896 | |
| 897 | # KERNELRELEASE can change from a few different places, meaning version.h |
| 898 | # needs to be updated, so this check is forced on all builds |
| 899 | |
| 900 | uts_len := 64 |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 901 | define filechk_utsrelease.h |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 903 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
| 904 | exit 1; \ |
| 905 | fi; \ |
| 906 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | endef |
| 908 | |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 909 | define filechk_version.h |
Jesper Juhl | 450c607 | 2012-02-16 22:49:15 +0100 | [diff] [blame] | 910 | (echo \#define LINUX_VERSION_CODE $(shell \ |
| 911 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 912 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
| 913 | endef |
| 914 | |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 915 | $(version_h): $(srctree)/Makefile FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | $(call filechk,version.h) |
| 917 | |
Sam Ravnborg | 273b281 | 2009-10-18 00:52:28 +0200 | [diff] [blame] | 918 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 919 | $(call filechk,utsrelease.h) |
| 920 | |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 921 | PHONY += headerdep |
| 922 | headerdep: |
Peter Foley | 9663d98 | 2011-04-26 17:17:11 -0400 | [diff] [blame] | 923 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
| 924 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 925 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | # --------------------------------------------------------------------------- |
| 927 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 928 | PHONY += depend dep |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | depend dep: |
| 930 | @echo '*** Warning: make $@ is unnecessary now.' |
| 931 | |
| 932 | # --------------------------------------------------------------------------- |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 933 | # Firmware install |
| 934 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware |
| 935 | export INSTALL_FW_PATH |
| 936 | |
| 937 | PHONY += firmware_install |
| 938 | firmware_install: FORCE |
| 939 | @mkdir -p $(objtree)/firmware |
| 940 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install |
| 941 | |
| 942 | # --------------------------------------------------------------------------- |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 943 | # Kernel headers |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 944 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 945 | #Default location for installed headers |
| 946 | export INSTALL_HDR_PATH = $(objtree)/usr |
| 947 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 948 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 949 | |
| 950 | # If we do an all arch process set dst to asm-$(hdr-arch) |
| 951 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 952 | |
H. Peter Anvin | 052ad27 | 2011-11-17 13:17:35 -0800 | [diff] [blame] | 953 | PHONY += archheaders |
| 954 | archheaders: |
| 955 | |
H. Peter Anvin | 6520fe5 | 2012-05-08 21:22:24 +0300 | [diff] [blame] | 956 | PHONY += archscripts |
| 957 | archscripts: |
| 958 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 959 | PHONY += __headers |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 960 | __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE |
Mike Waychison | e1b702c | 2011-03-14 23:34:25 -0700 | [diff] [blame] | 961 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
David Woodhouse | 6d71627 | 2006-09-24 22:16:03 +0100 | [diff] [blame] | 962 | |
| 963 | PHONY += headers_install_all |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 964 | headers_install_all: |
| 965 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
David Woodhouse | 6d71627 | 2006-09-24 22:16:03 +0100 | [diff] [blame] | 966 | |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 967 | PHONY += headers_install |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 968 | headers_install: __headers |
David Howells | 10b6395 | 2012-10-02 18:01:57 +0100 | [diff] [blame] | 969 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
| 970 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
| 971 | $(Q)$(MAKE) $(hdr-inst)=include/uapi |
| 972 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 973 | |
Mike Frysinger | 1f85712 | 2007-02-14 00:33:02 -0800 | [diff] [blame] | 974 | PHONY += headers_check_all |
| 975 | headers_check_all: headers_install_all |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 976 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
Mike Frysinger | 1f85712 | 2007-02-14 00:33:02 -0800 | [diff] [blame] | 977 | |
David Woodhouse | 6847535 | 2006-06-18 12:02:10 +0100 | [diff] [blame] | 978 | PHONY += headers_check |
| 979 | headers_check: headers_install |
David Howells | 10b6395 | 2012-10-02 18:01:57 +0100 | [diff] [blame] | 980 | $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 |
| 981 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 |
David Woodhouse | 6847535 | 2006-06-18 12:02:10 +0100 | [diff] [blame] | 982 | |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 983 | # --------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | # Modules |
| 985 | |
| 986 | ifdef CONFIG_MODULES |
| 987 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 988 | # By default, build modules as well |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | |
Michal Marek | 73d1393 | 2010-03-10 12:28:58 +0100 | [diff] [blame] | 990 | all: modules |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | |
| 992 | # Build modules |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 993 | # |
| 994 | # A module can be listed more than once in obj-m resulting in |
| 995 | # duplicate lines in modules.order files. Those are removed |
| 996 | # using awk while concatenating to the final file. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 998 | PHONY += modules |
Michal Marek | 2da30e7 | 2010-06-07 22:22:12 +0200 | [diff] [blame] | 999 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1000 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1001 | @$(kecho) ' Building modules, stage 2.'; |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1002 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
David Woodhouse | 44463f7 | 2008-07-25 14:17:19 -0400 | [diff] [blame] | 1003 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | |
Michal Marek | a6c3663 | 2010-03-08 10:07:12 +0100 | [diff] [blame] | 1005 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
| 1006 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin |
| 1007 | |
Michal Marek | 73d1393 | 2010-03-10 12:28:58 +0100 | [diff] [blame] | 1008 | %/modules.builtin: include/config/auto.conf |
Michal Marek | a6c3663 | 2010-03-08 10:07:12 +0100 | [diff] [blame] | 1009 | $(Q)$(MAKE) $(modbuiltin)=$* |
| 1010 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | |
| 1012 | # Target to prepare building external modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1013 | PHONY += modules_prepare |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1014 | modules_prepare: prepare scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | |
| 1016 | # Target to install modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1017 | PHONY += modules_install |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | modules_install: _modinst_ _modinst_post |
| 1019 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1020 | PHONY += _modinst_ |
Michal Marek | 2da30e7 | 2010-06-07 22:22:12 +0200 | [diff] [blame] | 1021 | _modinst_: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | @rm -rf $(MODLIB)/kernel |
| 1023 | @rm -f $(MODLIB)/source |
| 1024 | @mkdir -p $(MODLIB)/kernel |
| 1025 | @ln -s $(srctree) $(MODLIB)/source |
| 1026 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
| 1027 | rm -f $(MODLIB)/build ; \ |
| 1028 | ln -s $(objtree) $(MODLIB)/build ; \ |
| 1029 | fi |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1030 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
Michal Marek | bc081dd | 2009-12-07 16:38:33 +0100 | [diff] [blame] | 1031 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1032 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1034 | # This depmod is only for convenience to give the initial |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | # boot a modules.dep even before / is mounted read-write. However the |
| 1036 | # boot script depmod is the master version. |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1037 | PHONY += _modinst_post |
Linus Torvalds | 6d128e1 | 2013-07-10 19:02:51 -0700 | [diff] [blame] | 1038 | _modinst_post: _modinst_ |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 1039 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1040 | $(call cmd,depmod) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | |
Josh Boyer | d890f51 | 2012-11-05 09:09:24 +1030 | [diff] [blame] | 1042 | ifeq ($(CONFIG_MODULE_SIG), y) |
| 1043 | PHONY += modules_sign |
| 1044 | modules_sign: |
| 1045 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign |
| 1046 | endif |
| 1047 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | else # CONFIG_MODULES |
| 1049 | |
| 1050 | # Modules not configured |
| 1051 | # --------------------------------------------------------------------------- |
| 1052 | |
| 1053 | modules modules_install: FORCE |
Michal Marek | 5369f55 | 2012-07-07 23:04:40 +0200 | [diff] [blame] | 1054 | @echo >&2 |
| 1055 | @echo >&2 "The present kernel configuration has modules disabled." |
| 1056 | @echo >&2 "Type 'make config' and enable loadable module support." |
| 1057 | @echo >&2 "Then build a kernel with module support enabled." |
| 1058 | @echo >&2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | @exit 1 |
| 1060 | |
| 1061 | endif # CONFIG_MODULES |
| 1062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | ### |
| 1064 | # Cleaning is done on three levels. |
| 1065 | # make clean Delete most generated files |
| 1066 | # Leave enough to build external modules |
| 1067 | # make mrproper Delete the current configuration, and all generated files |
| 1068 | # make distclean Remove editor backup files, patch leftover files and the like |
| 1069 | |
| 1070 | # Directories & files removed with 'make clean' |
| 1071 | CLEAN_DIRS += $(MODVERDIR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | |
| 1073 | # Directories & files removed with 'make mrproper' |
Sam Ravnborg | d8ecc5c | 2011-04-27 22:29:49 +0200 | [diff] [blame] | 1074 | MRPROPER_DIRS += include/config usr/include include/generated \ |
| 1075 | arch/*/include/generated |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 1076 | MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ |
Rusty Russell | d5b7193 | 2012-10-02 14:35:24 +0930 | [diff] [blame] | 1077 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
| 1078 | signing_key.priv signing_key.x509 x509.genkey \ |
| 1079 | extra_certificates signing_key.x509.keyid \ |
| 1080 | signing_key.x509.signer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | |
| 1082 | # clean - Delete most, but leave enough to build external modules |
| 1083 | # |
| 1084 | clean: rm-dirs := $(CLEAN_DIRS) |
| 1085 | clean: rm-files := $(CLEAN_FILES) |
Gerard Snitselaar | fb68d4b | 2012-02-04 02:55:59 -0700 | [diff] [blame] | 1086 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | |
Pawel Moll | bd1ee80 | 2012-10-29 11:23:02 +0000 | [diff] [blame] | 1088 | PHONY += $(clean-dirs) clean archclean vmlinuxclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | $(clean-dirs): |
| 1090 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| 1091 | |
Pawel Moll | bd1ee80 | 2012-10-29 11:23:02 +0000 | [diff] [blame] | 1092 | vmlinuxclean: |
| 1093 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean |
| 1094 | |
| 1095 | clean: archclean vmlinuxclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | |
| 1097 | # mrproper - Delete all generated files, including .config |
| 1098 | # |
| 1099 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
| 1100 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
| 1101 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
| 1102 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1103 | PHONY += $(mrproper-dirs) mrproper archmrproper |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | $(mrproper-dirs): |
| 1105 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
| 1106 | |
| 1107 | mrproper: clean archmrproper $(mrproper-dirs) |
| 1108 | $(call cmd,rmdirs) |
| 1109 | $(call cmd,rmfiles) |
| 1110 | |
| 1111 | # distclean |
| 1112 | # |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1113 | PHONY += distclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | |
| 1115 | distclean: mrproper |
| 1116 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1117 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
Michal Marek | f4b129f | 2011-08-10 13:10:20 +0200 | [diff] [blame] | 1119 | -o -name '.*.rej' \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
| 1121 | -type f -print | xargs rm -f |
| 1122 | |
| 1123 | |
| 1124 | # Packaging of the kernel to various formats |
| 1125 | # --------------------------------------------------------------------------- |
| 1126 | # rpm target kept for backward compatibility |
| 1127 | package-dir := $(srctree)/scripts/package |
| 1128 | |
Arnaldo Carvalho de Melo | bafb674 | 2010-06-07 07:44:25 -0300 | [diff] [blame] | 1129 | %src-pkg: FORCE |
| 1130 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Zach Brown | 031ecc6 | 2006-06-08 22:12:37 -0700 | [diff] [blame] | 1131 | %pkg: include/config/kernel.release FORCE |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1132 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Zach Brown | 031ecc6 | 2006-06-08 22:12:37 -0700 | [diff] [blame] | 1133 | rpm: include/config/kernel.release FORCE |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1134 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | |
| 1136 | |
| 1137 | # Brief documentation of the typical targets used |
| 1138 | # --------------------------------------------------------------------------- |
| 1139 | |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1140 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | boards := $(notdir $(boards)) |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1142 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
| 1143 | board-dirs := $(sort $(notdir $(board-dirs:/=))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | |
| 1145 | help: |
| 1146 | @echo 'Cleaning targets:' |
Samuel Tardieu | 5ea084e | 2006-12-12 19:09:40 +0100 | [diff] [blame] | 1147 | @echo ' clean - Remove most generated files but keep the config and' |
Jesper Juhl | 5cc8d24 | 2006-09-24 14:01:08 +0200 | [diff] [blame] | 1148 | @echo ' enough build support to build external modules' |
Samuel Tardieu | 5ea084e | 2006-12-12 19:09:40 +0100 | [diff] [blame] | 1149 | @echo ' mrproper - Remove all generated files + config + various backup files' |
Jesper Juhl | 5cc8d24 | 2006-09-24 14:01:08 +0200 | [diff] [blame] | 1150 | @echo ' distclean - mrproper + remove editor backup and patch files' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | @echo '' |
| 1152 | @echo 'Configuration targets:' |
| 1153 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
| 1154 | @echo '' |
| 1155 | @echo 'Other generic targets:' |
| 1156 | @echo ' all - Build all targets marked with [*]' |
| 1157 | @echo '* vmlinux - Build the bare kernel' |
| 1158 | @echo '* modules - Build all modules' |
Bodo Eggert | 9cc5d74 | 2005-11-23 20:11:34 +0100 | [diff] [blame] | 1159 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 1160 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
| 1161 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | @echo ' dir/ - Build all files in dir and below' |
Joe Perches | 6271897 | 2010-01-13 09:31:44 -0800 | [diff] [blame] | 1163 | @echo ' dir/file.[oisS] - Build specified target only' |
| 1164 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' |
| 1165 | @echo ' (requires a recent binutils and recent build (System.map))' |
Sam Ravnborg | 155ad60 | 2005-07-07 17:56:08 -0700 | [diff] [blame] | 1166 | @echo ' dir/file.ko - Build module including final link' |
Robert P. J. Day | c4d5ee6 | 2009-04-24 12:35:23 -0400 | [diff] [blame] | 1167 | @echo ' modules_prepare - Set up for building external modules' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | @echo ' tags/TAGS - Generate tags file for editors' |
| 1169 | @echo ' cscope - Generate cscope index' |
Jianbin Kang | f4ed100 | 2011-01-14 20:07:05 +0800 | [diff] [blame] | 1170 | @echo ' gtags - Generate GNU GLOBAL index' |
Zach Brown | 6d12884 | 2005-09-07 12:08:23 -0700 | [diff] [blame] | 1171 | @echo ' kernelrelease - Output the release version string' |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 1172 | @echo ' kernelversion - Output the version stored in Makefile' |
Mike Marciniszyn | c398ff0 | 2013-06-24 08:48:37 -0400 | [diff] [blame] | 1173 | @echo ' image_name - Output the image name' |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1174 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
Geert Uytterhoeven | 59df323 | 2007-01-29 13:47:01 +0100 | [diff] [blame] | 1175 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1176 | echo '' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | @echo 'Static analysers' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | @echo ' checkstack - Generate a list of stack hogs' |
| 1179 | @echo ' namespacecheck - Name space analysis on compiled kernel' |
Sam Ravnborg | aa025e7 | 2007-11-14 21:34:55 +0100 | [diff] [blame] | 1180 | @echo ' versioncheck - Sanity check on version.h usage' |
Randy Dunlap | ec2d987 | 2007-11-04 12:01:55 -0800 | [diff] [blame] | 1181 | @echo ' includecheck - Check for duplicate included header files' |
Adrian Bunk | 295ac05 | 2007-08-24 23:04:56 +0200 | [diff] [blame] | 1182 | @echo ' export_report - List the usages of all exported symbols' |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 1183 | @echo ' headers_check - Sanity check on exported headers' |
Nicolas Palix | 74425ee | 2010-06-06 17:15:01 +0200 | [diff] [blame] | 1184 | @echo ' headerdep - Detect inclusion cycles in headers' |
| 1185 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help |
| 1186 | @echo '' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | @echo 'Kernel packaging:' |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1188 | @$(MAKE) $(build)=$(package-dir) help |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | @echo '' |
| 1190 | @echo 'Documentation targets:' |
| 1191 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
| 1192 | @echo '' |
Andres Salomon | 01dee18 | 2008-04-25 22:34:58 -0400 | [diff] [blame] | 1193 | @echo 'Architecture specific targets ($(SRCARCH)):' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | @$(if $(archhelp),$(archhelp),\ |
Andres Salomon | 01dee18 | 2008-04-25 22:34:58 -0400 | [diff] [blame] | 1195 | echo ' No architecture specific help defined for $(SRCARCH)') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | @echo '' |
| 1197 | @$(if $(boards), \ |
| 1198 | $(foreach b, $(boards), \ |
| 1199 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
| 1200 | echo '') |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1201 | @$(if $(board-dirs), \ |
| 1202 | $(foreach b, $(board-dirs), \ |
| 1203 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ |
| 1204 | printf " %-16s - Show all of the above\\n" help-boards; \ |
| 1205 | echo '') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | |
| 1207 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
Sam Ravnborg | 45d506b | 2006-08-08 21:35:14 +0200 | [diff] [blame] | 1208 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
Dustin Kirkland | 701842e | 2006-05-23 15:57:23 -0500 | [diff] [blame] | 1210 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
| 1211 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
Ingo Molnar | af07ce3 | 2011-06-16 13:26:23 +0200 | [diff] [blame] | 1212 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
Sam Ravnborg | 28bc20d | 2011-04-27 22:15:27 +0200 | [diff] [blame] | 1213 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
| 1214 | @echo ' 1: warnings which may be relevant and do not occur too often' |
| 1215 | @echo ' 2: warnings which occur quite often but may still be relevant' |
| 1216 | @echo ' 3: more obscure warnings, can most likely be ignored' |
Michal Marek | a6de553 | 2011-04-29 14:45:31 +0200 | [diff] [blame] | 1217 | @echo ' Multiple levels can be combined with W=12 or W=123' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | @echo '' |
| 1219 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
| 1220 | @echo 'For further info see the ./README file' |
| 1221 | |
| 1222 | |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1223 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
| 1224 | |
| 1225 | help-boards: $(help-board-dirs) |
| 1226 | |
| 1227 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) |
| 1228 | |
| 1229 | $(help-board-dirs): help-%: |
| 1230 | @echo 'Architecture specific targets ($(SRCARCH) $*):' |
| 1231 | @$(if $(boards-per-dir), \ |
| 1232 | $(foreach b, $(boards-per-dir), \ |
| 1233 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ |
| 1234 | echo '') |
| 1235 | |
| 1236 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | # Documentation targets |
| 1238 | # --------------------------------------------------------------------------- |
| 1239 | %docs: scripts_basic FORCE |
Peter Foley | bffd202 | 2011-05-02 22:48:03 +0200 | [diff] [blame] | 1240 | $(Q)$(MAKE) $(build)=scripts build_docproc |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
| 1242 | |
| 1243 | else # KBUILD_EXTMOD |
| 1244 | |
| 1245 | ### |
| 1246 | # External module support. |
| 1247 | # When building external modules the kernel used as basis is considered |
| 1248 | # read-only, and no consistency checks are made and the make |
| 1249 | # system is not used on the basis kernel. If updates are required |
| 1250 | # in the basis kernel ordinary make commands (without M=...) must |
| 1251 | # be used. |
| 1252 | # |
| 1253 | # The following are the only valid targets when building external |
| 1254 | # modules. |
| 1255 | # make M=dir clean Delete all automatically generated files |
| 1256 | # make M=dir modules Make all modules in specified dir |
| 1257 | # make M=dir Same as 'make M=dir modules' |
| 1258 | # make M=dir modules_install |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1259 | # Install the modules built in the module directory |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | # Assumes install directory is already created |
| 1261 | |
| 1262 | # We are always building modules |
| 1263 | KBUILD_MODULES := 1 |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1264 | PHONY += crmodverdir |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | crmodverdir: |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1266 | $(cmd_crmodverdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1268 | PHONY += $(objtree)/Module.symvers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | $(objtree)/Module.symvers: |
| 1270 | @test -e $(objtree)/Module.symvers || ( \ |
| 1271 | echo; \ |
| 1272 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
| 1273 | echo " is missing; modules will have no dependencies and modversions."; \ |
| 1274 | echo ) |
| 1275 | |
| 1276 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1277 | PHONY += $(module-dirs) modules |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
| 1279 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
| 1280 | |
| 1281 | modules: $(module-dirs) |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1282 | @$(kecho) ' Building modules, stage 2.'; |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1283 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1285 | PHONY += modules_install |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1286 | modules_install: _emodinst_ _emodinst_post |
Adrian Bunk | e630466 | 2006-02-14 15:58:15 +0100 | [diff] [blame] | 1287 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1288 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
| 1289 | PHONY += _emodinst_ |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1290 | _emodinst_: |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1291 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1292 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1294 | PHONY += _emodinst_post |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1295 | _emodinst_post: _emodinst_ |
| 1296 | $(call cmd,depmod) |
| 1297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
| 1299 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1300 | PHONY += $(clean-dirs) clean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | $(clean-dirs): |
| 1302 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| 1303 | |
| 1304 | clean: rm-dirs := $(MODVERDIR) |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1305 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | |
| 1307 | help: |
| 1308 | @echo ' Building external modules.' |
| 1309 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
| 1310 | @echo '' |
| 1311 | @echo ' modules - default target, build the module(s)' |
| 1312 | @echo ' modules_install - install the module' |
| 1313 | @echo ' clean - remove generated files in module directory only' |
| 1314 | @echo '' |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1315 | |
| 1316 | # Dummies... |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1317 | PHONY += prepare scripts |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1318 | prepare: ; |
| 1319 | scripts: ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | endif # KBUILD_EXTMOD |
| 1321 | |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1322 | clean: $(clean-dirs) |
| 1323 | $(call cmd,rmdirs) |
| 1324 | $(call cmd,rmfiles) |
Kevin Cernekee | 43f67c9 | 2011-05-10 15:47:16 -0700 | [diff] [blame] | 1325 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1326 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
David Howells | addbcdb | 2012-09-26 10:09:50 +0100 | [diff] [blame] | 1327 | -o -name '*.ko.*' \ |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1328 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
| 1329 | -o -name '*.symtypes' -o -name 'modules.order' \ |
| 1330 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ |
| 1331 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
| 1332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | # Generate tags for editors |
| 1334 | # --------------------------------------------------------------------------- |
Sam Ravnborg | a680eed | 2008-12-03 22:24:13 +0100 | [diff] [blame] | 1335 | quiet_cmd_tags = GEN $@ |
| 1336 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | |
Jianbin Kang | f4ed100 | 2011-01-14 20:07:05 +0800 | [diff] [blame] | 1338 | tags TAGS cscope gtags: FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | $(call cmd,tags) |
| 1340 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | # Scripts to check various things for consistency |
| 1342 | # --------------------------------------------------------------------------- |
| 1343 | |
Peter Foley | 279f3dd | 2011-04-26 17:15:01 -0400 | [diff] [blame] | 1344 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
| 1345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | includecheck: |
Peter Foley | 436f876 | 2011-04-26 17:18:29 -0400 | [diff] [blame] | 1347 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | -name '*.[hcS]' -type f -print | sort \ |
Geert Uytterhoeven | 8000743 | 2007-11-05 11:51:44 +0100 | [diff] [blame] | 1349 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | |
| 1351 | versioncheck: |
Peter Foley | 2ee2d29 | 2011-04-26 17:19:28 -0400 | [diff] [blame] | 1352 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | -name '*.[hcS]' -type f -print | sort \ |
Geert Uytterhoeven | 8000743 | 2007-11-05 11:51:44 +0100 | [diff] [blame] | 1354 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | |
Nicolas Palix | 74425ee | 2010-06-06 17:15:01 +0200 | [diff] [blame] | 1356 | coccicheck: |
| 1357 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
| 1358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | namespacecheck: |
| 1360 | $(PERL) $(srctree)/scripts/namespace.pl |
| 1361 | |
Adrian Bunk | 295ac05 | 2007-08-24 23:04:56 +0200 | [diff] [blame] | 1362 | export_report: |
| 1363 | $(PERL) $(srctree)/scripts/export_report.pl |
| 1364 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | endif #ifeq ($(config-targets),1) |
| 1366 | endif #ifeq ($(mixed-targets),1) |
| 1367 | |
Mike Marciniszyn | c398ff0 | 2013-06-24 08:48:37 -0400 | [diff] [blame] | 1368 | PHONY += checkstack kernelrelease kernelversion image_name |
Jeff Dike | e3ccf6e | 2006-09-27 01:50:37 -0700 | [diff] [blame] | 1369 | |
Jeff Dike | 011e3a9 | 2006-12-13 00:34:12 -0800 | [diff] [blame] | 1370 | # UML needs a little special treatment here. It wants to use the host |
| 1371 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone |
| 1372 | # else wants $(ARCH), including people doing cross-builds, which means |
| 1373 | # that $(SUBARCH) doesn't work here. |
| 1374 | ifeq ($(ARCH), um) |
| 1375 | CHECKSTACK_ARCH := $(SUBARCH) |
| 1376 | else |
| 1377 | CHECKSTACK_ARCH := $(ARCH) |
| 1378 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | checkstack: |
| 1380 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
Jeff Dike | 011e3a9 | 2006-12-13 00:34:12 -0800 | [diff] [blame] | 1381 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | |
Amerigo Wang | 7b8ea53 | 2010-08-20 05:36:06 -0400 | [diff] [blame] | 1383 | kernelrelease: |
| 1384 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
Amerigo Wang | 01ab178 | 2010-06-28 10:45:21 +0800 | [diff] [blame] | 1385 | |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 1386 | kernelversion: |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 1387 | @echo $(KERNELVERSION) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | |
Mike Marciniszyn | c398ff0 | 2013-06-24 08:48:37 -0400 | [diff] [blame] | 1389 | image_name: |
| 1390 | @echo $(KBUILD_IMAGE) |
| 1391 | |
Borislav Petkov | ea01fa9 | 2012-04-11 18:36:18 +0200 | [diff] [blame] | 1392 | # Clear a bunch of variables before executing the submake |
| 1393 | tools/: FORCE |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 1394 | $(Q)mkdir -p $(objtree)/tools |
Borislav Petkov | a50e433 | 2013-02-20 16:32:28 +0100 | [diff] [blame] | 1395 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ |
Borislav Petkov | ea01fa9 | 2012-04-11 18:36:18 +0200 | [diff] [blame] | 1396 | |
| 1397 | tools/%: FORCE |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 1398 | $(Q)mkdir -p $(objtree)/tools |
Borislav Petkov | a50e433 | 2013-02-20 16:32:28 +0100 | [diff] [blame] | 1399 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* |
Borislav Petkov | ea01fa9 | 2012-04-11 18:36:18 +0200 | [diff] [blame] | 1400 | |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1401 | # Single targets |
| 1402 | # --------------------------------------------------------------------------- |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1403 | # Single targets are compatible with: |
Robert P. J. Day | e1b8513 | 2008-02-03 15:14:02 +0200 | [diff] [blame] | 1404 | # - build with mixed source and output |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1405 | # - build with separate output dir 'make O=...' |
| 1406 | # - external modules |
| 1407 | # |
| 1408 | # target-dir => where to store outputfile |
| 1409 | # build-dir => directory in kernel source tree to use |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1410 | |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1411 | ifeq ($(KBUILD_EXTMOD),) |
Sam Ravnborg | aa36087 | 2006-04-06 08:25:31 +0200 | [diff] [blame] | 1412 | build-dir = $(patsubst %/,%,$(dir $@)) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1413 | target-dir = $(dir $@) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1414 | else |
| 1415 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1416 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
| 1417 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1418 | endif |
| 1419 | |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1420 | %.s: %.c prepare scripts FORCE |
| 1421 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1422 | %.i: %.c prepare scripts FORCE |
| 1423 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1424 | %.o: %.c prepare scripts FORCE |
| 1425 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1426 | %.lst: %.c prepare scripts FORCE |
| 1427 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1428 | %.s: %.S prepare scripts FORCE |
| 1429 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1430 | %.o: %.S prepare scripts FORCE |
| 1431 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 1432 | %.symtypes: %.c prepare scripts FORCE |
| 1433 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1434 | |
| 1435 | # Modules |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 1436 | /: prepare scripts FORCE |
| 1437 | $(cmd_crmodverdir) |
| 1438 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
| 1439 | $(build)=$(build-dir) |
| 1440 | %/: prepare scripts FORCE |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1441 | $(cmd_crmodverdir) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1442 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1443 | $(build)=$(build-dir) |
| 1444 | %.ko: prepare scripts FORCE |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1445 | $(cmd_crmodverdir) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1446 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1447 | $(build)=$(build-dir) $(@:.ko=.o) |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1448 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | # FIXME Should go into a make.lib or something |
| 1451 | # =========================================================================== |
| 1452 | |
| 1453 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
| 1454 | cmd_rmdirs = rm -rf $(rm-dirs) |
| 1455 | |
| 1456 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
| 1457 | cmd_rmfiles = rm -f $(rm-files) |
| 1458 | |
Uwe Kleine-König | bc3c26f | 2008-04-21 22:53:56 +0000 | [diff] [blame] | 1459 | # Run depmod only if we have System.map and depmod is executable |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1460 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
Michal Marek | 569658d | 2011-06-15 22:15:47 +0200 | [diff] [blame] | 1461 | cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
Rusty Russell | b92021b | 2013-03-15 15:04:17 +1030 | [diff] [blame] | 1462 | $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1463 | |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1464 | # Create temporary dir for module support files |
Sam Ravnborg | ab19f87 | 2007-10-22 11:23:07 +0200 | [diff] [blame] | 1465 | # clean it up only when building all modules |
| 1466 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ |
| 1467 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | # read all saved command lines |
| 1470 | |
| 1471 | targets := $(wildcard $(sort $(targets))) |
| 1472 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
| 1473 | |
| 1474 | ifneq ($(cmd_files),) |
| 1475 | $(cmd_files): ; # Do not try to update included dependency files |
| 1476 | include $(cmd_files) |
| 1477 | endif |
| 1478 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
| 1480 | # Usage: |
| 1481 | # $(Q)$(MAKE) $(clean)=dir |
| 1482 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
| 1483 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | endif # skip-makefile |
| 1485 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1486 | PHONY += FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | FORCE: |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1488 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1489 | # Declare the contents of the .PHONY variable as phony. We keep that |
Kirill Smelkov | fe8d0a4 | 2009-04-09 15:34:34 +0400 | [diff] [blame] | 1490 | # information in a variable so we can use it in if_changed and friends. |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1491 | .PHONY: $(PHONY) |