Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | c517d83 | 2015-02-22 18:21:14 -0800 | [diff] [blame] | 2 | VERSION = 4 |
Linus Torvalds | 2bd6bf0 | 2017-09-16 15:47:51 -0700 | [diff] [blame] | 3 | PATCHLEVEL = 14 |
Linus Torvalds | 55922c9 | 2011-05-29 17:43:36 -0700 | [diff] [blame] | 4 | SUBLEVEL = 0 |
Linus Torvalds | 39dae59 | 2017-11-05 13:05:14 -0800 | [diff] [blame] | 5 | EXTRAVERSION = -rc8 |
Linus Torvalds | 566cf87 | 2017-01-29 14:25:17 -0800 | [diff] [blame] | 6 | NAME = Fearless Coyote |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | |
| 8 | # *DOCUMENTATION* |
| 9 | # To see a list of typical targets execute "make help" |
| 10 | # More info can be located in ./README |
| 11 | # Comments in this file are targeted only to the developer, do not |
| 12 | # expect to learn how to build the kernel reading this file. |
| 13 | |
Masahiro Yamada | a436bb7 | 2015-03-27 20:43:36 +0900 | [diff] [blame] | 14 | # o Do not use make's built-in rules and variables |
| 15 | # (this increases performance and avoids hard-to-debug behaviour); |
| 16 | # o Look for make include files relative to root of kernel src |
| 17 | MAKEFLAGS += -rR --include-dir=$(CURDIR) |
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 | |
Michal Marek | 066b7ed | 2014-07-04 14:29:30 +0200 | [diff] [blame] | 44 | # Beautify output |
| 45 | # --------------------------------------------------------------------------- |
| 46 | # |
| 47 | # Normally, we echo the whole command before executing it. By making |
| 48 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
| 49 | # $(quiet) to choose other forms of output instead, e.g. |
| 50 | # |
| 51 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
| 52 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
| 53 | # |
| 54 | # If $(quiet) is empty, the whole command will be printed. |
| 55 | # If it is set to "quiet_", only the short version will be printed. |
| 56 | # If it is set to "silent_", nothing will be printed at all, since |
| 57 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
| 58 | # |
| 59 | # A simple variant is to prefix commands with $(Q) - that's useful |
| 60 | # for commands that shall be hidden in non-verbose mode. |
| 61 | # |
| 62 | # $(Q)ln $@ :< |
| 63 | # |
| 64 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
| 65 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
| 66 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | # To put more focus on warnings, be less verbose as default |
| 68 | # Use 'make V=1' to see the full commands |
| 69 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 70 | ifeq ("$(origin V)", "command line") |
| 71 | KBUILD_VERBOSE = $(V) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | endif |
| 73 | ifndef KBUILD_VERBOSE |
| 74 | KBUILD_VERBOSE = 0 |
| 75 | endif |
| 76 | |
Michal Marek | 066b7ed | 2014-07-04 14:29:30 +0200 | [diff] [blame] | 77 | ifeq ($(KBUILD_VERBOSE),1) |
| 78 | quiet = |
| 79 | Q = |
| 80 | else |
| 81 | quiet=quiet_ |
| 82 | Q = @ |
| 83 | endif |
| 84 | |
| 85 | # If the user is running make -s (silent mode), suppress echoing of |
| 86 | # commands |
| 87 | |
Masahiro Yamada | 6f0fa58 | 2017-05-19 20:42:30 +0900 | [diff] [blame] | 88 | ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) |
Michal Marek | 066b7ed | 2014-07-04 14:29:30 +0200 | [diff] [blame] | 89 | quiet=silent_ |
Josh Poimboeuf | e572d08 | 2017-01-18 22:16:55 -0600 | [diff] [blame] | 90 | tools_silent=s |
Michal Marek | 066b7ed | 2014-07-04 14:29:30 +0200 | [diff] [blame] | 91 | endif |
Michal Marek | 066b7ed | 2014-07-04 14:29:30 +0200 | [diff] [blame] | 92 | |
| 93 | export quiet Q KBUILD_VERBOSE |
| 94 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | # kbuild supports saving output files in a separate directory. |
| 96 | # To locate output files in a separate directory two syntaxes are supported. |
| 97 | # In both cases the working directory must be the root of the kernel src. |
| 98 | # 1) O= |
| 99 | # Use "make O=dir/to/store/output/files/" |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 100 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | # 2) Set KBUILD_OUTPUT |
| 102 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
| 103 | # where the output files shall be placed. |
| 104 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
| 105 | # make |
| 106 | # |
| 107 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
| 108 | # variable. |
| 109 | |
Cao jin | c4e6fff | 2017-06-30 10:45:43 +0800 | [diff] [blame] | 110 | # KBUILD_SRC is not intended to be used by the regular user (for now), |
| 111 | # it is set on invocation of make with KBUILD_OUTPUT or O= specified. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | ifeq ($(KBUILD_SRC),) |
| 113 | |
| 114 | # OK, Make called in directory where kernel src resides |
| 115 | # Do we want to locate output files in a separate directory? |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 116 | ifeq ("$(origin O)", "command line") |
| 117 | KBUILD_OUTPUT := $(O) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | endif |
| 119 | |
| 120 | # 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] | 121 | PHONY := _all |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | _all: |
| 123 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 124 | # Cancel implicit rules on top Makefile |
| 125 | $(CURDIR)/Makefile Makefile: ; |
| 126 | |
Robert Jarzmik | 51193b7 | 2016-04-02 21:38:53 +0200 | [diff] [blame] | 127 | ifneq ($(words $(subst :, ,$(CURDIR))), 1) |
| 128 | $(error main directory cannot contain spaces nor colons) |
| 129 | endif |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | ifneq ($(KBUILD_OUTPUT),) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | # check that the output directory actually exists |
| 133 | saved-output := $(KBUILD_OUTPUT) |
Masahiro Yamada | 028568d | 2017-10-02 17:07:28 +0900 | [diff] [blame] | 134 | KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ |
| 135 | && /bin/pwd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | $(if $(KBUILD_OUTPUT),, \ |
Masahiro Yamada | 1c9e70a | 2014-03-31 16:41:36 +0900 | [diff] [blame] | 137 | $(error failed to create output directory "$(saved-output)")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 139 | PHONY += $(MAKECMDGOALS) sub-make |
| 140 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 141 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
Charles Keepax | 16f8909 | 2012-10-15 13:49:12 +0100 | [diff] [blame] | 142 | @: |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 143 | |
Cao jin | c4e6fff | 2017-06-30 10:45:43 +0800 | [diff] [blame] | 144 | # Invoke a second make in the output directory, passing relevant variables |
Masahiro Yamada | 2e8d696 | 2016-03-13 09:13:55 +0900 | [diff] [blame] | 145 | sub-make: |
Masahiro Yamada | 745a254 | 2014-09-09 20:02:23 +0900 | [diff] [blame] | 146 | $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ |
Masahiro Yamada | aa55c8e | 2014-09-09 20:02:24 +0900 | [diff] [blame] | 147 | -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
| 149 | # Leave processing to above invocation of make |
| 150 | skip-makefile := 1 |
| 151 | endif # ifneq ($(KBUILD_OUTPUT),) |
| 152 | endif # ifeq ($(KBUILD_SRC),) |
| 153 | |
| 154 | # We process the rest of the Makefile if this is the final invocation of make |
| 155 | ifeq ($(skip-makefile),) |
| 156 | |
Masahiro Yamada | 7ff5257 | 2014-09-09 20:02:22 +0900 | [diff] [blame] | 157 | # Do not print "Entering directory ...", |
| 158 | # but we want to display it when entering to the output directory |
| 159 | # so that IDEs/editors are able to understand relative filenames. |
| 160 | MAKEFLAGS += --no-print-directory |
| 161 | |
Masahiro Yamada | aa55c8e | 2014-09-09 20:02:24 +0900 | [diff] [blame] | 162 | # Call a source code checker (by default, "sparse") as part of the |
| 163 | # C compilation. |
| 164 | # |
| 165 | # Use 'make C=1' to enable checking of only re-compiled files. |
| 166 | # Use 'make C=2' to enable checking of *all* source files, regardless |
| 167 | # of whether they are re-compiled or not. |
| 168 | # |
Cao jin | 036db11 | 2017-03-24 17:03:17 +0800 | [diff] [blame] | 169 | # See the file "Documentation/dev-tools/sparse.rst" for more details, |
| 170 | # including where to get the "sparse" utility. |
Masahiro Yamada | aa55c8e | 2014-09-09 20:02:24 +0900 | [diff] [blame] | 171 | |
| 172 | ifeq ("$(origin C)", "command line") |
| 173 | KBUILD_CHECKSRC = $(C) |
| 174 | endif |
| 175 | ifndef KBUILD_CHECKSRC |
| 176 | KBUILD_CHECKSRC = 0 |
| 177 | endif |
| 178 | |
| 179 | # Use make M=dir to specify directory of external module to build |
| 180 | # Old syntax make ... SUBDIRS=$PWD is still supported |
| 181 | # Setting the environment variable KBUILD_EXTMOD take precedence |
| 182 | ifdef SUBDIRS |
| 183 | KBUILD_EXTMOD ?= $(SUBDIRS) |
| 184 | endif |
| 185 | |
| 186 | ifeq ("$(origin M)", "command line") |
| 187 | KBUILD_EXTMOD := $(M) |
| 188 | endif |
| 189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | # If building an external module we do not care about the all: rule |
| 191 | # but instead _all depend on modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 192 | PHONY += all |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | ifeq ($(KBUILD_EXTMOD),) |
| 194 | _all: all |
| 195 | else |
| 196 | _all: modules |
| 197 | endif |
| 198 | |
Michal Marek | 9da0763 | 2014-04-25 23:25:18 +0200 | [diff] [blame] | 199 | ifeq ($(KBUILD_SRC),) |
| 200 | # building in the source tree |
| 201 | srctree := . |
| 202 | else |
| 203 | ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) |
| 204 | # building in a subdirectory of the source tree |
| 205 | srctree := .. |
| 206 | else |
| 207 | srctree := $(KBUILD_SRC) |
| 208 | endif |
| 209 | endif |
Michal Marek | 7e1c047 | 2014-04-25 17:29:45 +0200 | [diff] [blame] | 210 | objtree := . |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | src := $(srctree) |
| 212 | obj := $(objtree) |
| 213 | |
Mattia Dongili | 0f558c3 | 2006-02-19 13:50:37 +0100 | [diff] [blame] | 214 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
Amerigo Wang | 1129423 | 2009-06-19 03:40:26 -0400 | [diff] [blame] | 216 | export srctree objtree VPATH |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
| 219 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
| 220 | # line overrides the setting of ARCH below. If a native build is happening, |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 221 | # then ARCH is assigned, getting whatever value it gets normally, and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | # SUBARCH is subsequently ignored. |
| 223 | |
David Woodhouse | ffee0de | 2012-12-20 21:51:55 +0000 | [diff] [blame] | 224 | SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ |
| 225 | -e s/sun4u/sparc64/ \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
Linus Torvalds | 39990b5 | 2005-11-11 14:27:32 -0800 | [diff] [blame] | 227 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
Paul Mundt | 236b195 | 2007-11-02 12:22:47 +0900 | [diff] [blame] | 228 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
Will Deacon | f1b9939 | 2013-01-18 19:00:47 +0000 | [diff] [blame] | 229 | -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
| 231 | # Cross compiling and selecting different set of gcc/bin-utils |
| 232 | # --------------------------------------------------------------------------- |
| 233 | # |
| 234 | # When performing cross compilation for other architectures ARCH shall be set |
| 235 | # to the target architecture. (See arch/* for the possibilities). |
| 236 | # ARCH can be set during invocation of make: |
| 237 | # make ARCH=ia64 |
| 238 | # Another way is to have ARCH set in the environment. |
| 239 | # The default ARCH is the host where make is executed. |
| 240 | |
| 241 | # CROSS_COMPILE specify the prefix used for all executables used |
| 242 | # during compilation. Only gcc and related bin-utils executables |
| 243 | # are prefixed with $(CROSS_COMPILE). |
| 244 | # CROSS_COMPILE can be set on the command line |
| 245 | # make CROSS_COMPILE=ia64-linux- |
| 246 | # Alternatively CROSS_COMPILE can be set in the environment. |
Roland McGrath | 8433646 | 2009-12-21 16:24:06 -0800 | [diff] [blame] | 247 | # A third alternative is to store a setting in .config so that plain |
| 248 | # "make" in the configured kernel build directory always uses that. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | # Default value for CROSS_COMPILE is not to prefix executables |
| 250 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
Sam Ravnborg | 2331d1a | 2009-10-11 23:22:58 +0200 | [diff] [blame] | 251 | ARCH ?= $(SUBARCH) |
Roland McGrath | 8433646 | 2009-12-21 16:24:06 -0800 | [diff] [blame] | 252 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
| 254 | # Architecture as present in compile.h |
Thomas Gleixner | 6752ed9 | 2007-10-11 11:11:36 +0200 | [diff] [blame] | 255 | UTS_MACHINE := $(ARCH) |
| 256 | SRCARCH := $(ARCH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
Sam Ravnborg | d746d64 | 2007-11-12 20:14:19 +0100 | [diff] [blame] | 258 | # Additional ARCH settings for x86 |
| 259 | ifeq ($(ARCH),i386) |
| 260 | SRCARCH := x86 |
| 261 | endif |
| 262 | ifeq ($(ARCH),x86_64) |
| 263 | SRCARCH := x86 |
| 264 | endif |
Sam Ravnborg | 74b469f | 2007-10-25 19:42:04 +0200 | [diff] [blame] | 265 | |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 266 | # Additional ARCH settings for sparc |
Namhyung Kim | e69f58c | 2010-10-25 05:48:23 +0000 | [diff] [blame] | 267 | ifeq ($(ARCH),sparc32) |
| 268 | SRCARCH := sparc |
| 269 | endif |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 270 | ifeq ($(ARCH),sparc64) |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 271 | SRCARCH := sparc |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 272 | endif |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 273 | |
Paul Mundt | 3cc000b | 2009-04-11 08:39:27 +0900 | [diff] [blame] | 274 | # Additional ARCH settings for sh |
| 275 | ifeq ($(ARCH),sh64) |
| 276 | SRCARCH := sh |
| 277 | endif |
| 278 | |
Chris Metcalf | 18aecc2 | 2011-05-04 14:38:26 -0400 | [diff] [blame] | 279 | # Additional ARCH settings for tile |
Chris Metcalf | 6738d32 | 2011-05-25 15:24:00 -0400 | [diff] [blame] | 280 | ifeq ($(ARCH),tilepro) |
| 281 | SRCARCH := tile |
| 282 | endif |
Chris Metcalf | 18aecc2 | 2011-05-04 14:38:26 -0400 | [diff] [blame] | 283 | ifeq ($(ARCH),tilegx) |
| 284 | SRCARCH := tile |
| 285 | endif |
| 286 | |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 287 | # Where to locate arch specific headers |
| 288 | hdr-arch := $(SRCARCH) |
| 289 | |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 290 | KCONFIG_CONFIG ?= .config |
Ben Gardiner | 41263fc | 2010-12-14 11:39:44 -0500 | [diff] [blame] | 291 | export KCONFIG_CONFIG |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | # SHELL used by kbuild |
| 294 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
| 295 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
| 296 | else echo sh; fi ; fi) |
| 297 | |
Uwe Kleine-König | d7f14c6 | 2017-07-09 20:02:36 +0200 | [diff] [blame] | 298 | HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS) |
| 299 | HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS) |
| 300 | HOST_LFS_LIBS := $(shell getconf LFS_LIBS) |
| 301 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 302 | HOSTCC = gcc |
| 303 | HOSTCXX = g++ |
Uwe Kleine-König | d7f14c6 | 2017-07-09 20:02:36 +0200 | [diff] [blame] | 304 | HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ |
| 305 | -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) |
| 306 | HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) |
| 307 | HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) |
| 308 | HOST_LOADLIBES := $(HOST_LFS_LIBS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
Behan Webster | 61163ef | 2013-09-03 22:27:23 -0400 | [diff] [blame] | 310 | ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) |
| 311 | HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ |
| 312 | -Wno-missing-field-initializers -fno-delete-null-pointer-checks |
| 313 | endif |
| 314 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 315 | # Decide whether to build built-in, modular, or both. |
| 316 | # Normally, just do built-in. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | KBUILD_MODULES := |
| 319 | KBUILD_BUILTIN := 1 |
| 320 | |
Masahiro Yamada | 3fbb43d | 2014-04-28 16:32:43 +0900 | [diff] [blame] | 321 | # If we have only "make modules", don't compile built-in objects. |
| 322 | # When we're building modules with modversions, we need to consider |
| 323 | # the built-in objects during the descend as well, in order to |
| 324 | # make sure the checksums are up to date before we record them. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
| 326 | ifeq ($(MAKECMDGOALS),modules) |
| 327 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
| 328 | endif |
| 329 | |
Masahiro Yamada | 3fbb43d | 2014-04-28 16:32:43 +0900 | [diff] [blame] | 330 | # If we have "make <whatever> modules", compile modules |
| 331 | # in addition to whatever we do anyway. |
| 332 | # Just "make" or "make all" shall build modules as well |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
| 334 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
| 335 | KBUILD_MODULES := 1 |
| 336 | endif |
| 337 | |
| 338 | ifeq ($(MAKECMDGOALS),) |
| 339 | KBUILD_MODULES := 1 |
| 340 | endif |
| 341 | |
Sam Ravnborg | e579d35 | 2005-07-27 08:10:10 +0200 | [diff] [blame] | 342 | export KBUILD_MODULES KBUILD_BUILTIN |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
| 344 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 345 | # We need some generic definitions (do not try to remake the file). |
Masahiro Yamada | a436bb7 | 2015-03-27 20:43:36 +0900 | [diff] [blame] | 346 | scripts/Kbuild.include: ; |
| 347 | include scripts/Kbuild.include |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
| 349 | # Make variables (CC, etc...) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | AS = $(CROSS_COMPILE)as |
| 351 | LD = $(CROSS_COMPILE)ld |
| 352 | CC = $(CROSS_COMPILE)gcc |
| 353 | CPP = $(CC) -E |
| 354 | AR = $(CROSS_COMPILE)ar |
| 355 | NM = $(CROSS_COMPILE)nm |
| 356 | STRIP = $(CROSS_COMPILE)strip |
| 357 | OBJCOPY = $(CROSS_COMPILE)objcopy |
| 358 | OBJDUMP = $(CROSS_COMPILE)objdump |
| 359 | AWK = awk |
| 360 | GENKSYMS = scripts/genksyms/genksyms |
Sam Ravnborg | caa27b6 | 2009-07-20 21:37:11 +0200 | [diff] [blame] | 361 | INSTALLKERNEL := installkernel |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | DEPMOD = /sbin/depmod |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | PERL = perl |
Masahiro Yamada | 011bf12 | 2014-07-18 13:40:11 +0900 | [diff] [blame] | 364 | PYTHON = python |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | CHECK = sparse |
| 366 | |
Hannes Eder | 80a7d1d | 2008-12-27 22:38:44 +0100 | [diff] [blame] | 367 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
| 368 | -Wbitwise -Wno-return-void $(CF) |
Michal Marek | b36fad6 | 2016-06-07 11:57:02 +0200 | [diff] [blame] | 369 | NOSTDINC_FLAGS = |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 370 | CFLAGS_MODULE = |
| 371 | AFLAGS_MODULE = |
| 372 | LDFLAGS_MODULE = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | CFLAGS_KERNEL = |
| 374 | AFLAGS_KERNEL = |
Michal Marek | b36fad6 | 2016-06-07 11:57:02 +0200 | [diff] [blame] | 375 | LDFLAGS_vmlinux = |
Arnd Bergmann | b334e19 | 2017-01-13 16:40:01 +0100 | [diff] [blame] | 376 | CFLAGS_GCOV := -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,) |
Emese Revfy | 543c37c | 2016-05-24 00:11:37 +0200 | [diff] [blame] | 377 | CFLAGS_KCOV := $(call cc-option,-fsanitize-coverage=trace-pc,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
| 379 | |
David Howells | abbf159 | 2012-10-02 18:01:26 +0100 | [diff] [blame] | 380 | # Use USERINCLUDE when you must reference the UAPI directories only. |
| 381 | USERINCLUDE := \ |
| 382 | -I$(srctree)/arch/$(hdr-arch)/include/uapi \ |
Arnd Bergmann | 3308b28 | 2016-06-15 17:45:45 +0200 | [diff] [blame] | 383 | -I$(objtree)/arch/$(hdr-arch)/include/generated/uapi \ |
David Howells | abbf159 | 2012-10-02 18:01:26 +0100 | [diff] [blame] | 384 | -I$(srctree)/include/uapi \ |
Arnd Bergmann | 3308b28 | 2016-06-15 17:45:45 +0200 | [diff] [blame] | 385 | -I$(objtree)/include/generated/uapi \ |
David Howells | abbf159 | 2012-10-02 18:01:26 +0100 | [diff] [blame] | 386 | -include $(srctree)/include/linux/kconfig.h |
| 387 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | # Use LINUXINCLUDE when you must reference the include/ directory. |
| 389 | # Needed to be compatible with the O= option |
David Howells | abbf159 | 2012-10-02 18:01:26 +0100 | [diff] [blame] | 390 | LINUXINCLUDE := \ |
| 391 | -I$(srctree)/arch/$(hdr-arch)/include \ |
Arnd Bergmann | 3308b28 | 2016-06-15 17:45:45 +0200 | [diff] [blame] | 392 | -I$(objtree)/arch/$(hdr-arch)/include/generated \ |
David Howells | abbf159 | 2012-10-02 18:01:26 +0100 | [diff] [blame] | 393 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
Masahiro Yamada | f8224f7 | 2017-06-06 16:15:28 +0900 | [diff] [blame] | 394 | -I$(objtree)/include \ |
| 395 | $(USERINCLUDE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 397 | KBUILD_CPPFLAGS := -D__KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 399 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
Arnd Bergmann | 8c97023 | 2017-07-26 15:36:23 +0200 | [diff] [blame] | 400 | -fno-strict-aliasing -fno-common -fshort-wchar \ |
Floris Kraak | a873582 | 2009-06-15 08:54:02 +0300 | [diff] [blame] | 401 | -Werror-implicit-function-declaration \ |
Kirill A. Shutemov | 51b97e3 | 2014-10-20 12:23:12 +0300 | [diff] [blame] | 402 | -Wno-format-security \ |
Borislav Petkov | c6a3855 | 2016-11-14 19:41:31 +0100 | [diff] [blame] | 403 | -std=gnu89 $(call cc-option,-fno-PIE) |
| 404 | |
Geert Uytterhoeven | a1c48bb | 2014-05-27 09:54:12 +0200 | [diff] [blame] | 405 | |
Sam Ravnborg | 80c00ba | 2010-07-28 19:11:27 +0200 | [diff] [blame] | 406 | KBUILD_AFLAGS_KERNEL := |
| 407 | KBUILD_CFLAGS_KERNEL := |
Borislav Petkov | c6a3855 | 2016-11-14 19:41:31 +0100 | [diff] [blame] | 408 | KBUILD_AFLAGS := -D__ASSEMBLY__ $(call cc-option,-fno-PIE) |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 409 | KBUILD_AFLAGS_MODULE := -DMODULE |
| 410 | KBUILD_CFLAGS_MODULE := -DMODULE |
| 411 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 413 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
| 414 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
Michal Marek | cacd54e | 2011-05-30 13:36:07 +0200 | [diff] [blame] | 415 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 416 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 417 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
Sam Ravnborg | 80ef88d | 2007-11-17 15:37:31 +0100 | [diff] [blame] | 418 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
Uwe Kleine-König | d7f14c6 | 2017-07-09 20:02:36 +0200 | [diff] [blame] | 419 | export CPP AR NM STRIP OBJCOPY OBJDUMP HOSTLDFLAGS HOST_LOADLIBES |
Masahiro Yamada | 011bf12 | 2014-07-18 13:40:11 +0900 | [diff] [blame] | 420 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 421 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
Sam Ravnborg | 06c5040 | 2007-10-15 22:17:25 +0200 | [diff] [blame] | 423 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
Dmitry Vyukov | 5c9a875 | 2016-03-22 14:27:30 -0700 | [diff] [blame] | 424 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KCOV CFLAGS_KASAN CFLAGS_UBSAN |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 425 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 426 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
Sam Ravnborg | 80c00ba | 2010-07-28 19:11:27 +0200 | [diff] [blame] | 427 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
Michal Marek | 40df759 | 2011-04-20 13:45:30 +0200 | [diff] [blame] | 428 | export KBUILD_ARFLAGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | |
| 430 | # When compiling out-of-tree modules, put MODVERDIR in the module |
| 431 | # tree rather than in the kernel tree. The kernel tree might |
| 432 | # even be read-only. |
| 433 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
| 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | # Files to ignore in find ... statements |
| 436 | |
Prarit Bhargava | ae63b2d | 2014-02-06 07:51:42 -0500 | [diff] [blame] | 437 | export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ |
| 438 | -name CVS -o -name .pc -o -name .hg -o -name .git \) \ |
| 439 | -prune -o |
Jesper Juhl | 450c607 | 2012-02-16 22:49:15 +0100 | [diff] [blame] | 440 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ |
| 441 | --exclude CVS --exclude .pc --exclude .hg --exclude .git |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | |
| 443 | # =========================================================================== |
| 444 | # Rules shared between *config targets and build targets |
| 445 | |
Cao jin | 312a3d0 | 2017-08-02 10:31:06 +0800 | [diff] [blame] | 446 | # Basic helpers built in scripts/basic/ |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 447 | PHONY += scripts_basic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | scripts_basic: |
| 449 | $(Q)$(MAKE) $(build)=scripts/basic |
Steven Rostedt | 638adb0 | 2009-11-17 10:48:25 -0500 | [diff] [blame] | 450 | $(Q)rm -f .tmp_quiet_recordmcount |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
Jan Beulich | cd05e6b | 2005-09-06 11:47:04 +0200 | [diff] [blame] | 452 | # To avoid any implicit rule to kick in, define an empty command. |
| 453 | scripts/basic/%: scripts_basic ; |
| 454 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 455 | PHONY += outputmakefile |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 456 | # outputmakefile generates a Makefile in the output directory, if using a |
| 457 | # separate output directory. This allows convenient use of make in the |
| 458 | # output directory. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | outputmakefile: |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 460 | ifneq ($(KBUILD_SRC),) |
Andi Kleen | 9297999 | 2009-01-10 04:56:13 +0100 | [diff] [blame] | 461 | $(Q)ln -fsn $(srctree) source |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 462 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
| 463 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
| 464 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
Sam Ravnborg | d8ecc5c | 2011-04-27 22:29:49 +0200 | [diff] [blame] | 466 | # Support for using generic headers in asm-generic |
Masahiro Yamada | a9d9a40 | 2017-07-10 03:32:59 +0900 | [diff] [blame] | 467 | PHONY += asm-generic uapi-asm-generic |
| 468 | asm-generic: uapi-asm-generic |
Sam Ravnborg | d8ecc5c | 2011-04-27 22:29:49 +0200 | [diff] [blame] | 469 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
Catalin Marinas | 3c5994c | 2012-10-17 12:25:44 +0100 | [diff] [blame] | 470 | src=asm obj=arch/$(SRCARCH)/include/generated/asm |
Masahiro Yamada | a9d9a40 | 2017-07-10 03:32:59 +0900 | [diff] [blame] | 471 | uapi-asm-generic: |
Catalin Marinas | 3c5994c | 2012-10-17 12:25:44 +0100 | [diff] [blame] | 472 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
| 473 | src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm |
Sam Ravnborg | d8ecc5c | 2011-04-27 22:29:49 +0200 | [diff] [blame] | 474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | # To make sure we do not include .config for any of the *config targets |
| 476 | # catch them early, and hand them over to scripts/kconfig/Makefile |
| 477 | # It is allowed to specify more targets when calling make, including |
| 478 | # mixing *config targets and build targets. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 479 | # For example 'make oldconfig all'. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | # Detect when mixed targets is specified, and make a second invocation |
| 481 | # of make so .config is not included in this case either (for *config). |
| 482 | |
David Howells | 10b6395 | 2012-10-02 18:01:57 +0100 | [diff] [blame] | 483 | version_h := include/generated/uapi/linux/version.h |
Michal Marek | 223c24a | 2014-11-27 16:13:17 +0100 | [diff] [blame] | 484 | old_version_h := include/linux/version.h |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 485 | |
Roman Zippel | 3eb3c74 | 2007-01-10 14:45:28 +0100 | [diff] [blame] | 486 | no-dot-config-targets := clean mrproper distclean \ |
Michal Marek | fbae4d5 | 2014-11-28 13:31:43 +0100 | [diff] [blame] | 487 | cscope gtags TAGS tags help% %docs check% coccicheck \ |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 488 | $(version_h) headers_% archheaders archscripts \ |
Linus Torvalds | 4aed2fd | 2010-08-06 09:30:52 -0700 | [diff] [blame] | 489 | kernelversion %src-pkg |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | |
| 491 | config-targets := 0 |
| 492 | mixed-targets := 0 |
| 493 | dot-config := 1 |
| 494 | |
| 495 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
| 496 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
| 497 | dot-config := 0 |
| 498 | endif |
| 499 | endif |
| 500 | |
| 501 | ifeq ($(KBUILD_EXTMOD),) |
| 502 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
| 503 | config-targets := 1 |
Masahiro Yamada | d0d38cd | 2014-12-11 19:12:34 +0900 | [diff] [blame] | 504 | ifneq ($(words $(MAKECMDGOALS)),1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | mixed-targets := 1 |
| 506 | endif |
| 507 | endif |
| 508 | endif |
Cao jin | 312a3d0 | 2017-08-02 10:31:06 +0800 | [diff] [blame] | 509 | # install and modules_install need also be processed one by one |
Michal Marek | a85a41e | 2015-12-10 15:53:06 +0100 | [diff] [blame] | 510 | ifneq ($(filter install,$(MAKECMDGOALS)),) |
| 511 | ifneq ($(filter modules_install,$(MAKECMDGOALS)),) |
| 512 | mixed-targets := 1 |
| 513 | endif |
| 514 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
| 516 | ifeq ($(mixed-targets),1) |
| 517 | # =========================================================================== |
| 518 | # We're called with mixed targets (*config and build targets). |
| 519 | # Handle them one by one. |
| 520 | |
Masahiro Yamada | 9319f45 | 2014-04-09 15:51:35 +0900 | [diff] [blame] | 521 | PHONY += $(MAKECMDGOALS) __build_one_by_one |
| 522 | |
| 523 | $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one |
| 524 | @: |
| 525 | |
| 526 | __build_one_by_one: |
| 527 | $(Q)set -e; \ |
| 528 | for i in $(MAKECMDGOALS); do \ |
| 529 | $(MAKE) -f $(srctree)/Makefile $$i; \ |
| 530 | done |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | |
| 532 | else |
| 533 | ifeq ($(config-targets),1) |
| 534 | # =========================================================================== |
| 535 | # *config targets only - make sure prerequisites are updated, and descend |
| 536 | # in scripts/kconfig to make the *config target |
| 537 | |
| 538 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
| 539 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
| 540 | # used for 'make defconfig' |
Masahiro Yamada | a436bb7 | 2015-03-27 20:43:36 +0900 | [diff] [blame] | 541 | include arch/$(SRCARCH)/Makefile |
Al Viro | 61bee20 | 2008-08-25 04:51:27 -0400 | [diff] [blame] | 542 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 544 | config: scripts_basic outputmakefile FORCE |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 545 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 546 | |
| 547 | %config: scripts_basic outputmakefile FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 549 | |
| 550 | else |
| 551 | # =========================================================================== |
| 552 | # Build targets only - this includes vmlinux, arch specific targets, clean |
| 553 | # targets and others. In general all targets except *config targets. |
| 554 | |
| 555 | ifeq ($(KBUILD_EXTMOD),) |
| 556 | # Additional helpers built in scripts/ |
| 557 | # Carefully list dependencies so we do not try to build scripts twice |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 558 | # in parallel |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 559 | PHONY += scripts |
Andreas Schwab | a54292f | 2013-04-09 19:57:00 +0200 | [diff] [blame] | 560 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
Emese Revfy | 6b90bd4 | 2016-05-24 00:09:38 +0200 | [diff] [blame] | 561 | asm-generic gcc-plugins |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | $(Q)$(MAKE) $(build)=$(@) |
| 563 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | # Objects we will link into vmlinux / subdirs we need to visit |
| 565 | init-y := init/ |
Markus Trippelsdorf | df85b2d | 2017-09-16 11:01:16 +0200 | [diff] [blame] | 566 | drivers-y := drivers/ sound/ firmware/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | net-y := net/ |
| 568 | libs-y := lib/ |
| 569 | core-y := usr/ |
Feng Wu | 37d9fe4 | 2015-09-22 16:47:29 +0800 | [diff] [blame] | 570 | virt-y := virt/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | endif # KBUILD_EXTMOD |
| 572 | |
| 573 | ifeq ($(dot-config),1) |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 574 | # Read in config |
| 575 | -include include/config/auto.conf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 577 | ifeq ($(KBUILD_EXTMOD),) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | # Read in dependencies to all Kconfig* files, make sure to run |
| 579 | # oldconfig if changes are detected. |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 580 | -include include/config/auto.conf.cmd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | # To avoid any implicit rule to kick in, define an empty command |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 583 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 585 | # If .config is newer than include/config/auto.conf, someone tinkered |
Sam Ravnborg | 752625c | 2005-12-26 23:34:03 +0100 | [diff] [blame] | 586 | # with it and forgot to run make oldconfig. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 587 | # 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] | 588 | # 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] | 589 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
| 591 | else |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 592 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 593 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
| 594 | PHONY += include/config/auto.conf |
| 595 | |
| 596 | include/config/auto.conf: |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 597 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
Michal Marek | 5369f55 | 2012-07-07 23:04:40 +0200 | [diff] [blame] | 598 | echo >&2; \ |
| 599 | echo >&2 " ERROR: Kernel configuration is invalid."; \ |
| 600 | echo >&2 " include/generated/autoconf.h or $@ are missing.";\ |
| 601 | echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
| 602 | echo >&2 ; \ |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 603 | /bin/false) |
| 604 | |
| 605 | endif # KBUILD_EXTMOD |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | else |
| 608 | # Dummy target needed, because used as prerequisite |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 609 | include/config/auto.conf: ; |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 610 | endif # $(dot-config) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
Nicolas Pitre | 8655639 | 2016-12-02 15:11:50 -0500 | [diff] [blame] | 612 | # For the kernel to actually contain only the needed exported symbols, |
| 613 | # we have to build modules as well to determine what those symbols are. |
| 614 | # (this can be evaluated only once include/config/auto.conf has been included) |
| 615 | ifdef CONFIG_TRIM_UNUSED_KSYMS |
| 616 | KBUILD_MODULES := 1 |
| 617 | endif |
| 618 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | # The all: target is the default when no target is given on the |
| 620 | # command line. |
| 621 | # 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] | 622 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | all: vmlinux |
| 624 | |
Michal Marek | 6dd3f13 | 2015-07-16 18:23:53 +0200 | [diff] [blame] | 625 | # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default |
| 626 | # values of the respective KBUILD_* variables |
| 627 | ARCH_CPPFLAGS := |
| 628 | ARCH_AFLAGS := |
| 629 | ARCH_CFLAGS := |
Masahiro Yamada | a436bb7 | 2015-03-27 20:43:36 +0900 | [diff] [blame] | 630 | include arch/$(SRCARCH)/Makefile |
Geert Uytterhoeven | a1c48bb | 2014-05-27 09:54:12 +0200 | [diff] [blame] | 631 | |
| 632 | KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) |
Linus Torvalds | ef6000b | 2016-10-12 10:23:41 -0700 | [diff] [blame] | 633 | KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) |
Linus Torvalds | bd664f6 | 2017-07-12 19:25:47 -0700 | [diff] [blame] | 634 | KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) |
| 635 | KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) |
| 636 | KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context) |
Geert Uytterhoeven | a1c48bb | 2014-05-27 09:54:12 +0200 | [diff] [blame] | 637 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
Behan Webster | 6748cb3 | 2017-03-27 18:19:09 -0700 | [diff] [blame] | 639 | KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) |
| 640 | KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | else |
Arnd Bergmann | 815eb71 | 2016-04-25 17:35:28 +0200 | [diff] [blame] | 642 | ifdef CONFIG_PROFILE_ALL_BRANCHES |
Arnd Bergmann | a76bcf5 | 2016-11-10 17:44:44 +0100 | [diff] [blame] | 643 | KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) |
Arnd Bergmann | 815eb71 | 2016-04-25 17:35:28 +0200 | [diff] [blame] | 644 | else |
| 645 | KBUILD_CFLAGS += -O2 |
| 646 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | endif |
| 648 | |
Arnd Bergmann | a76bcf5 | 2016-11-10 17:44:44 +0100 | [diff] [blame] | 649 | KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \ |
| 650 | $(call cc-disable-warning,maybe-uninitialized,)) |
| 651 | |
Jiri Kosina | 6910231 | 2014-08-06 16:08:43 -0700 | [diff] [blame] | 652 | # Tell gcc to never replace conditional load with a non-conditional one |
| 653 | KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) |
| 654 | |
Gleb Fotengauer-Malinovskiy | 7292ae3 | 2017-03-20 20:15:53 +0300 | [diff] [blame] | 655 | # check for 'asm goto' |
| 656 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y) |
| 657 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO |
| 658 | KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO |
| 659 | endif |
| 660 | |
Emese Revfy | 6b90bd4 | 2016-05-24 00:09:38 +0200 | [diff] [blame] | 661 | include scripts/Makefile.gcc-plugins |
| 662 | |
Andi Kleen | 1873e87 | 2012-03-28 11:51:18 -0700 | [diff] [blame] | 663 | ifdef CONFIG_READABLE_ASM |
| 664 | # Disable optimizations that make assembler listings hard to read. |
| 665 | # reorder blocks reorders the control in the function |
| 666 | # ipa clone creates specialized cloned functions |
| 667 | # partial inlining inlines only parts of functions |
| 668 | KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ |
| 669 | $(call cc-option,-fno-ipa-cp-clone,) \ |
| 670 | $(call cc-option,-fno-partial-inlining) |
| 671 | endif |
| 672 | |
Mike Frysinger | 08f6746 | 2009-06-04 16:29:08 -0700 | [diff] [blame] | 673 | ifneq ($(CONFIG_FRAME_WARN),0) |
Andi Kleen | 35bb5b1 | 2008-02-22 15:15:03 +0100 | [diff] [blame] | 674 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
| 675 | endif |
| 676 | |
Kees Cook | c965b10 | 2016-07-26 15:21:17 -0700 | [diff] [blame] | 677 | # This selects the stack protector compiler flag. Testing it is delayed |
| 678 | # until after .config has been reprocessed, in the prepare-compiler-check |
| 679 | # target. |
Kees Cook | 8779657 | 2013-12-19 11:35:59 -0800 | [diff] [blame] | 680 | ifdef CONFIG_CC_STACKPROTECTOR_REGULAR |
Kees Cook | 19952a9 | 2013-12-19 11:35:58 -0800 | [diff] [blame] | 681 | stackp-flag := -fstack-protector |
Kees Cook | c965b10 | 2016-07-26 15:21:17 -0700 | [diff] [blame] | 682 | stackp-name := REGULAR |
Jan Beulich | 6c15b32 | 2014-02-25 15:01:48 -0800 | [diff] [blame] | 683 | else |
| 684 | ifdef CONFIG_CC_STACKPROTECTOR_STRONG |
Kees Cook | 8779657 | 2013-12-19 11:35:59 -0800 | [diff] [blame] | 685 | stackp-flag := -fstack-protector-strong |
Kees Cook | c965b10 | 2016-07-26 15:21:17 -0700 | [diff] [blame] | 686 | stackp-name := STRONG |
Kees Cook | 19952a9 | 2013-12-19 11:35:58 -0800 | [diff] [blame] | 687 | else |
| 688 | # Force off for distro compilers that enable stack protector by default. |
| 689 | stackp-flag := $(call cc-option, -fno-stack-protector) |
Tejun Heo | 5d707e9 | 2009-02-09 22:17:39 +0900 | [diff] [blame] | 690 | endif |
Jan Beulich | 6c15b32 | 2014-02-25 15:01:48 -0800 | [diff] [blame] | 691 | endif |
Kees Cook | c965b10 | 2016-07-26 15:21:17 -0700 | [diff] [blame] | 692 | # Find arch-specific stack protector compiler sanity-checking script. |
| 693 | ifdef CONFIG_CC_STACKPROTECTOR |
Kees Cook | 228d96c | 2016-07-26 14:26:20 -0700 | [diff] [blame] | 694 | stackp-path := $(srctree)/scripts/gcc-$(SRCARCH)_$(BITS)-has-stack-protector.sh |
| 695 | stackp-check := $(wildcard $(stackp-path)) |
Kees Cook | c965b10 | 2016-07-26 15:21:17 -0700 | [diff] [blame] | 696 | endif |
Kees Cook | 19952a9 | 2013-12-19 11:35:58 -0800 | [diff] [blame] | 697 | KBUILD_CFLAGS += $(stackp-flag) |
Sam Ravnborg | e06b8b9 | 2008-02-13 22:43:28 +0100 | [diff] [blame] | 698 | |
Michal Marek | 5631d9c | 2015-08-19 17:36:41 +0200 | [diff] [blame] | 699 | ifeq ($(cc-name),clang) |
Behan Webster | 785f11a | 2017-04-21 11:20:01 -0700 | [diff] [blame] | 700 | ifneq ($(CROSS_COMPILE),) |
David Lin | bb3f38c | 2017-10-20 14:09:13 -0700 | [diff] [blame] | 701 | CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%)) |
Behan Webster | 785f11a | 2017-04-21 11:20:01 -0700 | [diff] [blame] | 702 | GCC_TOOLCHAIN := $(realpath $(dir $(shell which $(LD)))/..) |
| 703 | endif |
| 704 | ifneq ($(GCC_TOOLCHAIN),) |
David Lin | bb3f38c | 2017-10-20 14:09:13 -0700 | [diff] [blame] | 705 | CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN) |
Behan Webster | 785f11a | 2017-04-21 11:20:01 -0700 | [diff] [blame] | 706 | endif |
| 707 | KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) |
| 708 | KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) |
Behan Webster | 61163ef | 2013-09-03 22:27:23 -0400 | [diff] [blame] | 709 | KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) |
Behan Webster | 61163ef | 2013-09-03 22:27:23 -0400 | [diff] [blame] | 710 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) |
| 711 | KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) |
| 712 | KBUILD_CFLAGS += $(call cc-disable-warning, gnu) |
Matthias Kaehlcke | bfb3898 | 2017-04-21 14:39:30 -0700 | [diff] [blame] | 713 | KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) |
Behan Webster | 61163ef | 2013-09-03 22:27:23 -0400 | [diff] [blame] | 714 | # Quiet clang warning: comparison of unsigned expression < 0 is always false |
| 715 | KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) |
| 716 | # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the |
| 717 | # source of a reference will be _MergedGlobals and not on of the whitelisted names. |
| 718 | # See modpost pattern 2 |
| 719 | KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) |
Behan Webster | 26ea6bb | 2014-07-31 21:08:25 -0700 | [diff] [blame] | 720 | KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) |
Michael Davidson | a37c45c | 2017-04-25 15:47:35 -0700 | [diff] [blame] | 721 | KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) |
| 722 | KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) |
Behan Webster | 61163ef | 2013-09-03 22:27:23 -0400 | [diff] [blame] | 723 | else |
| 724 | |
Arnd Bergmann | c9c6837 | 2016-05-10 23:30:01 +0200 | [diff] [blame] | 725 | # These warnings generated too much noise in a regular build. |
Seung-Woo Kim | 35288e3 | 2017-03-10 11:01:00 +0900 | [diff] [blame] | 726 | # Use make W=1 to enable them (see scripts/Makefile.extrawarn) |
Michal Marek | 8417da6f | 2011-05-02 12:51:15 +0200 | [diff] [blame] | 727 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
Arnd Bergmann | c9c6837 | 2016-05-10 23:30:01 +0200 | [diff] [blame] | 728 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) |
Behan Webster | 61163ef | 2013-09-03 22:27:23 -0400 | [diff] [blame] | 729 | endif |
Dave Jones | af0e5d5 | 2011-04-21 17:28:13 -0400 | [diff] [blame] | 730 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | ifdef CONFIG_FRAME_POINTER |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 732 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | else |
Rabin Vincent | 7e9501f | 2010-08-10 19:20:53 +0100 | [diff] [blame] | 734 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
| 735 | # pointers. For those, we don't have FUNCTION_TRACER automatically |
| 736 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is |
| 737 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use |
| 738 | # -fomit-frame-pointer with FUNCTION_TRACER. |
| 739 | ifndef CONFIG_FUNCTION_TRACER |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 740 | KBUILD_CFLAGS += -fomit-frame-pointer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | endif |
Rabin Vincent | 7e9501f | 2010-08-10 19:20:53 +0100 | [diff] [blame] | 742 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | |
Linus Torvalds | 2062afb | 2014-07-26 14:52:01 -0700 | [diff] [blame] | 744 | KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) |
| 745 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | ifdef CONFIG_DEBUG_INFO |
Andi Kleen | 866ced9 | 2014-07-30 20:50:18 +0200 | [diff] [blame] | 747 | ifdef CONFIG_DEBUG_INFO_SPLIT |
| 748 | KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) |
| 749 | else |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 750 | KBUILD_CFLAGS += -g |
Andi Kleen | 866ced9 | 2014-07-30 20:50:18 +0200 | [diff] [blame] | 751 | endif |
Behan Webster | 2288328 | 2014-02-14 15:19:17 -0800 | [diff] [blame] | 752 | KBUILD_AFLAGS += -Wa,-gdwarf-2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | endif |
Andi Kleen | bfaf2dd | 2014-07-30 20:50:19 +0200 | [diff] [blame] | 754 | ifdef CONFIG_DEBUG_INFO_DWARF4 |
| 755 | KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) |
| 756 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
Andi Kleen | d6f4ceb | 2010-07-14 15:43:52 +0200 | [diff] [blame] | 758 | ifdef CONFIG_DEBUG_INFO_REDUCED |
Andi Kleen | e82c4bb | 2013-02-07 13:58:40 -0800 | [diff] [blame] | 759 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
| 760 | $(call cc-option,-fno-var-tracking) |
Andi Kleen | d6f4ceb | 2010-07-14 15:43:52 +0200 | [diff] [blame] | 761 | endif |
| 762 | |
Steven Rostedt | 606576c | 2008-10-06 19:06:12 -0400 | [diff] [blame] | 763 | ifdef CONFIG_FUNCTION_TRACER |
Heiko Carstens | c0a80c0 | 2015-01-09 13:06:33 +0100 | [diff] [blame] | 764 | ifndef CC_FLAGS_FTRACE |
| 765 | CC_FLAGS_FTRACE := -pg |
| 766 | endif |
| 767 | export CC_FLAGS_FTRACE |
Steven Rostedt | a2546fa | 2011-02-09 13:15:59 -0500 | [diff] [blame] | 768 | ifdef CONFIG_HAVE_FENTRY |
| 769 | CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) |
| 770 | endif |
Heiko Carstens | c0a80c0 | 2015-01-09 13:06:33 +0100 | [diff] [blame] | 771 | KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) |
Steven Rostedt | a2546fa | 2011-02-09 13:15:59 -0500 | [diff] [blame] | 772 | KBUILD_AFLAGS += $(CC_USING_FENTRY) |
Steven Rostedt | 72441cb | 2010-10-13 17:12:30 -0400 | [diff] [blame] | 773 | ifdef CONFIG_DYNAMIC_FTRACE |
Steven Rostedt | cf4db25 | 2010-10-14 23:32:44 -0400 | [diff] [blame] | 774 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
Steven Rostedt | 72441cb | 2010-10-13 17:12:30 -0400 | [diff] [blame] | 775 | BUILD_C_RECORDMCOUNT := y |
| 776 | export BUILD_C_RECORDMCOUNT |
| 777 | endif |
| 778 | endif |
Arnaldo Carvalho de Melo | 16444a8 | 2008-05-12 21:20:42 +0200 | [diff] [blame] | 779 | endif |
| 780 | |
Sam Ravnborg | 91341d4 | 2008-01-21 21:31:44 +0100 | [diff] [blame] | 781 | # We trigger additional mismatches with less inlining |
| 782 | ifdef CONFIG_DEBUG_SECTION_MISMATCH |
| 783 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) |
| 784 | endif |
| 785 | |
Masahiro Yamada | 90ad405 | 2017-04-14 15:17:26 +0900 | [diff] [blame] | 786 | ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION |
| 787 | KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,) |
| 788 | KBUILD_CFLAGS += $(call cc-option,-fdata-sections,) |
| 789 | endif |
| 790 | |
Sam Ravnborg | e8e6993 | 2005-04-30 16:51:42 -0700 | [diff] [blame] | 791 | # 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] | 792 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
Sam Ravnborg | e8e6993 | 2005-04-30 16:51:42 -0700 | [diff] [blame] | 793 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
| 794 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | # warn about C99 declaration after statement |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 796 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 798 | # disable pointer signed / unsigned warnings in gcc 4.0 |
Michal Marek | 8417da6f | 2011-05-02 12:51:15 +0200 | [diff] [blame] | 799 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | |
Kirill Smelkov | fe8d0a4 | 2009-04-09 15:34:34 +0400 | [diff] [blame] | 801 | # disable invalid "can't wrap" optimizations for signed / pointers |
Linus Torvalds | a137802 | 2009-07-12 11:25:04 -0700 | [diff] [blame] | 802 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
Linus Torvalds | d011555 | 2009-03-19 15:53:19 -0700 | [diff] [blame] | 803 | |
Andi Kleen | 8f7f5c9 | 2009-09-18 12:49:37 -0700 | [diff] [blame] | 804 | # conserve stack if available |
| 805 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
| 806 | |
Sergei Trofimovich | 8097047 | 2013-09-13 14:51:40 -0700 | [diff] [blame] | 807 | # disallow errors like 'EXPORT_GPL(foo);' with missing header |
| 808 | KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) |
| 809 | |
| 810 | # require functions to have arguments in prototypes, not empty 'int foo()' |
| 811 | KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) |
| 812 | |
Josh Triplett | fe7c36c | 2013-12-23 13:56:06 -0800 | [diff] [blame] | 813 | # Prohibit date/time macros, which would make the build non-deterministic |
| 814 | KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) |
| 815 | |
Daniel Wagner | ea8daa7 | 2016-03-08 09:29:09 +0100 | [diff] [blame] | 816 | # enforce correct pointer usage |
| 817 | KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) |
| 818 | |
Kees Cook | c834f0e | 2017-03-20 17:14:11 -0700 | [diff] [blame] | 819 | # Require designated initializers for all marked structures |
| 820 | KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) |
| 821 | |
Michal Marek | 40df759 | 2011-04-20 13:45:30 +0200 | [diff] [blame] | 822 | # use the deterministic mode of AR if available |
| 823 | KBUILD_ARFLAGS := $(call ar-option,D) |
| 824 | |
Masahiro Yamada | a436bb7 | 2015-03-27 20:43:36 +0900 | [diff] [blame] | 825 | include scripts/Makefile.kasan |
| 826 | include scripts/Makefile.extrawarn |
Andrey Ryabinin | c6d3085 | 2016-01-20 15:00:55 -0800 | [diff] [blame] | 827 | include scripts/Makefile.ubsan |
Masahiro Yamada | a86fe35 | 2014-04-14 18:27:10 +0900 | [diff] [blame] | 828 | |
Michal Marek | 61754c1 | 2015-07-01 17:19:30 +0200 | [diff] [blame] | 829 | # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the |
| 830 | # last assignments |
| 831 | KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) |
| 832 | KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) |
| 833 | KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) |
Sam Ravnborg | 52bcc33 | 2007-10-15 22:03:58 +0200 | [diff] [blame] | 834 | |
Roland McGrath | 1899119 | 2007-07-19 01:48:40 -0700 | [diff] [blame] | 835 | # Use --build-id when available. |
Rabin Vincent | bd74370 | 2017-04-30 18:16:00 +0200 | [diff] [blame] | 836 | LDFLAGS_BUILD_ID := $(patsubst -Wl$(comma)%,%,\ |
Sam Ravnborg | f86fd30 | 2009-09-19 10:14:33 +0200 | [diff] [blame] | 837 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 838 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
Roland McGrath | 1899119 | 2007-07-19 01:48:40 -0700 | [diff] [blame] | 839 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
| 840 | |
Nicholas Piggin | b67067f | 2016-08-24 22:29:20 +1000 | [diff] [blame] | 841 | ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION |
| 842 | LDFLAGS_vmlinux += $(call ld-option, --gc-sections,) |
| 843 | endif |
| 844 | |
David Howells | 5d7d18f | 2009-03-04 11:59:07 -0800 | [diff] [blame] | 845 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
Andi Kleen | d79a271 | 2009-09-16 22:36:55 +0200 | [diff] [blame] | 846 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
David Howells | 5d7d18f | 2009-03-04 11:59:07 -0800 | [diff] [blame] | 847 | endif |
| 848 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | # Default kernel image to build when no specific target is given. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 850 | # KBUILD_IMAGE may be overruled on the command line or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | # set in the environment |
| 852 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
| 853 | # this default value |
| 854 | export KBUILD_IMAGE ?= vmlinux |
| 855 | |
| 856 | # |
| 857 | # INSTALL_PATH specifies where to place the updated kernel and system map |
| 858 | # images. Default is /boot, but you can set it to other values |
| 859 | export INSTALL_PATH ?= /boot |
| 860 | |
| 861 | # |
Jason Cooper | f4d4ffc | 2013-12-01 23:56:28 +0000 | [diff] [blame] | 862 | # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. |
| 863 | # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as |
| 864 | # an argument if needed. Otherwise it defaults to the kernel install path |
| 865 | # |
| 866 | export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) |
| 867 | |
| 868 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
| 870 | # relocations required by build roots. This is not defined in the |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 871 | # makefile but the argument can be passed to make if needed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | # |
| 873 | |
Sam Ravnborg | df9df03 | 2006-01-16 12:46:07 +0100 | [diff] [blame] | 874 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | export MODLIB |
| 876 | |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 877 | # |
Masahiro Yamada | 3fbb43d | 2014-04-28 16:32:43 +0900 | [diff] [blame] | 878 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
| 879 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then |
| 880 | # the default option --strip-debug will be used. Otherwise, |
| 881 | # 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] | 882 | |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 883 | ifdef INSTALL_MOD_STRIP |
| 884 | ifeq ($(INSTALL_MOD_STRIP),1) |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 885 | mod_strip_cmd = $(STRIP) --strip-debug |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 886 | else |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 887 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 888 | endif # INSTALL_MOD_STRIP=1 |
| 889 | else |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 890 | mod_strip_cmd = true |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 891 | endif # INSTALL_MOD_STRIP |
| 892 | export mod_strip_cmd |
| 893 | |
Bertrand Jacquin | beb50df | 2014-08-27 20:31:56 +0930 | [diff] [blame] | 894 | # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed |
| 895 | # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP |
| 896 | # or CONFIG_MODULE_COMPRESS_XZ. |
| 897 | |
| 898 | mod_compress_cmd = true |
| 899 | ifdef CONFIG_MODULE_COMPRESS |
| 900 | ifdef CONFIG_MODULE_COMPRESS_GZIP |
Jason A. Donenfeld | 3d1450d | 2015-07-07 20:26:07 +0200 | [diff] [blame] | 901 | mod_compress_cmd = gzip -n -f |
Bertrand Jacquin | beb50df | 2014-08-27 20:31:56 +0930 | [diff] [blame] | 902 | endif # CONFIG_MODULE_COMPRESS_GZIP |
| 903 | ifdef CONFIG_MODULE_COMPRESS_XZ |
Jason A. Donenfeld | 3d1450d | 2015-07-07 20:26:07 +0200 | [diff] [blame] | 904 | mod_compress_cmd = xz -f |
Bertrand Jacquin | beb50df | 2014-08-27 20:31:56 +0930 | [diff] [blame] | 905 | endif # CONFIG_MODULE_COMPRESS_XZ |
| 906 | endif # CONFIG_MODULE_COMPRESS |
| 907 | export mod_compress_cmd |
| 908 | |
P J P | 1bf49dd | 2013-11-12 15:11:44 -0800 | [diff] [blame] | 909 | # Select initial ramdisk compression format, default is gzip(1). |
| 910 | # This shall be used by the dracut(8) tool while creating an initramfs image. |
| 911 | # |
Jan Beulich | 7ac1815 | 2013-12-18 17:08:57 -0800 | [diff] [blame] | 912 | INITRD_COMPRESS-y := gzip |
| 913 | INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 |
| 914 | INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma |
| 915 | INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz |
| 916 | INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo |
| 917 | INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 |
Linus Torvalds | b7000ad | 2013-12-20 16:52:45 -0800 | [diff] [blame] | 918 | # do not export INITRD_COMPRESS, since we didn't actually |
| 919 | # choose a sane default compression above. |
| 920 | # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | |
Michal Marek | d9d8d7e | 2013-01-25 13:41:31 +1030 | [diff] [blame] | 922 | ifdef CONFIG_MODULE_SIG_ALL |
David Woodhouse | 3ee550f | 2015-08-14 16:17:16 +0100 | [diff] [blame] | 923 | $(eval $(call config_filename,MODULE_SIG_KEY)) |
| 924 | |
| 925 | mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 |
Rusty Russell | e2a666d | 2012-10-19 11:53:15 +1030 | [diff] [blame] | 926 | else |
| 927 | mod_sign_cmd = true |
| 928 | endif |
| 929 | export mod_sign_cmd |
| 930 | |
Josh Poimboeuf | 9f0c18a | 2017-02-15 12:21:17 -0600 | [diff] [blame] | 931 | ifdef CONFIG_STACK_VALIDATION |
| 932 | has_libelf := $(call try-run,\ |
| 933 | echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0) |
| 934 | ifeq ($(has_libelf),1) |
| 935 | objtool_target := tools/objtool FORCE |
| 936 | else |
Josh Poimboeuf | 3dd40cb | 2017-10-03 20:10:36 -0500 | [diff] [blame] | 937 | ifdef CONFIG_ORC_UNWINDER |
| 938 | $(error "Cannot generate ORC metadata for CONFIG_ORC_UNWINDER=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel") |
| 939 | else |
| 940 | $(warning "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel") |
| 941 | endif |
Josh Poimboeuf | 9f0c18a | 2017-02-15 12:21:17 -0600 | [diff] [blame] | 942 | SKIP_STACK_VALIDATION := 1 |
| 943 | export SKIP_STACK_VALIDATION |
| 944 | endif |
| 945 | endif |
| 946 | |
Rusty Russell | e2a666d | 2012-10-19 11:53:15 +1030 | [diff] [blame] | 947 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | ifeq ($(KBUILD_EXTMOD),) |
David Howells | cfc411e | 2015-08-14 15:20:41 +0100 | [diff] [blame] | 949 | core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | |
| 951 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
| 952 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
Feng Wu | 37d9fe4 | 2015-09-22 16:47:29 +0800 | [diff] [blame] | 953 | $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
| 955 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
Feng Wu | 37d9fe4 | 2015-09-22 16:47:29 +0800 | [diff] [blame] | 956 | $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
| 958 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
| 959 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
| 960 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
| 961 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
| 962 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
Nicholas Piggin | 3a166fc | 2017-06-20 01:52:05 +1000 | [diff] [blame] | 963 | libs-y2 := $(filter-out %.a, $(patsubst %/, %/built-in.o, $(libs-y))) |
Feng Wu | 37d9fe4 | 2015-09-22 16:47:29 +0800 | [diff] [blame] | 964 | virt-y := $(patsubst %/, %/built-in.o, $(virt-y)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 966 | # Externally visible symbols (used by link-vmlinux.sh) |
Sam Ravnborg | 9569857 | 2012-05-05 10:18:40 +0200 | [diff] [blame] | 967 | export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
Nicholas Piggin | 3a166fc | 2017-06-20 01:52:05 +1000 | [diff] [blame] | 968 | export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-y) |
| 969 | export KBUILD_VMLINUX_LIBS := $(libs-y1) |
Sam Ravnborg | 9569857 | 2012-05-05 10:18:40 +0200 | [diff] [blame] | 970 | export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 971 | export LDFLAGS_vmlinux |
Cao jin | 312a3d0 | 2017-08-02 10:31:06 +0800 | [diff] [blame] | 972 | # used by scripts/package/Makefile |
Feng Wu | 37d9fe4 | 2015-09-22 16:47:29 +0800 | [diff] [blame] | 973 | export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | |
Nicholas Piggin | 3a166fc | 2017-06-20 01:52:05 +1000 | [diff] [blame] | 975 | vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | |
Nicolas Pitre | 2441e78 | 2016-04-22 15:25:00 -0400 | [diff] [blame] | 977 | # Include targets which we want to execute sequentially if the rest of the |
| 978 | # kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be |
| 979 | # evaluated more than once. |
| 980 | PHONY += vmlinux_prereq |
| 981 | vmlinux_prereq: $(vmlinux-deps) FORCE |
David Woodhouse | 0f836e5f | 2006-10-11 01:21:43 -0700 | [diff] [blame] | 982 | ifdef CONFIG_HEADERS_CHECK |
David Woodhouse | 0e7af8d04 | 2006-10-13 16:04:23 +0100 | [diff] [blame] | 983 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
David Woodhouse | 0f836e5f | 2006-10-11 01:21:43 -0700 | [diff] [blame] | 984 | endif |
Jan Kiszka | 3ee7b3f | 2015-02-17 13:46:36 -0800 | [diff] [blame] | 985 | ifdef CONFIG_GDB_SCRIPTS |
Masahiro Yamada | 8e9b466 | 2017-08-20 15:04:11 +0900 | [diff] [blame] | 986 | $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) |
Jan Kiszka | 3ee7b3f | 2015-02-17 13:46:36 -0800 | [diff] [blame] | 987 | endif |
Nicolas Pitre | 2441e78 | 2016-04-22 15:25:00 -0400 | [diff] [blame] | 988 | ifdef CONFIG_TRIM_UNUSED_KSYMS |
Nicolas Ferre | ba79d40 | 2016-04-25 17:55:08 +0200 | [diff] [blame] | 989 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ |
Nicolas Pitre | 8655639 | 2016-12-02 15:11:50 -0500 | [diff] [blame] | 990 | "$(MAKE) -f $(srctree)/Makefile vmlinux" |
Nicolas Pitre | 2441e78 | 2016-04-22 15:25:00 -0400 | [diff] [blame] | 991 | endif |
Nicolas Pitre | 23121ca | 2016-01-26 21:50:18 -0500 | [diff] [blame] | 992 | |
| 993 | # standalone target for easier testing |
| 994 | include/generated/autoksyms.h: FORCE |
Nicolas Ferre | ba79d40 | 2016-04-25 17:55:08 +0200 | [diff] [blame] | 995 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true |
Nicolas Pitre | 23121ca | 2016-01-26 21:50:18 -0500 | [diff] [blame] | 996 | |
Nicholas Piggin | fbe6e37 | 2016-08-24 22:29:21 +1000 | [diff] [blame] | 997 | ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) |
| 998 | |
| 999 | # Final link of vmlinux with optional arch pass after final link |
Cao jin | 312a3d0 | 2017-08-02 10:31:06 +0800 | [diff] [blame] | 1000 | cmd_link-vmlinux = \ |
| 1001 | $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ; \ |
Nicholas Piggin | fbe6e37 | 2016-08-24 22:29:21 +1000 | [diff] [blame] | 1002 | $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) |
Nicolas Pitre | 2441e78 | 2016-04-22 15:25:00 -0400 | [diff] [blame] | 1003 | |
Nicolas Pitre | edf6947 | 2016-04-26 16:48:44 -0400 | [diff] [blame] | 1004 | vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 1005 | +$(call if_changed,link-vmlinux) |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 1006 | |
Nicolas Pitre | dd92478 | 2016-02-28 22:00:00 -0500 | [diff] [blame] | 1007 | # Build samples along the rest of the kernel |
| 1008 | ifdef CONFIG_SAMPLES |
| 1009 | vmlinux-dirs += samples |
| 1010 | endif |
| 1011 | |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 1012 | # The actual objects are generated when descending, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | # make sure no implicit rule kicks in |
Sam Ravnborg | 1f2bfbd | 2012-05-05 10:18:41 +0200 | [diff] [blame] | 1014 | $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | |
| 1016 | # Handle descending into subdirectories listed in $(vmlinux-dirs) |
| 1017 | # Preset locale variables to speed up the build process. Limit locale |
| 1018 | # tweaks to this spot to avoid wrong language settings when running |
| 1019 | # make menuconfig etc. |
| 1020 | # Error messages still appears in the original language |
| 1021 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1022 | PHONY += $(vmlinux-dirs) |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1023 | $(vmlinux-dirs): prepare scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | $(Q)$(MAKE) $(build)=$@ |
| 1025 | |
Michal Marek | 0d0e771 | 2013-07-11 15:34:51 +0200 | [diff] [blame] | 1026 | define filechk_kernel.release |
| 1027 | echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
| 1028 | endef |
| 1029 | |
Geert Uytterhoeven | 83a35e3 | 2013-06-28 11:27:31 +0200 | [diff] [blame] | 1030 | # Store (new) KERNELRELEASE string in include/config/kernel.release |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 1031 | include/config/kernel.release: include/config/auto.conf FORCE |
Michal Marek | 0d0e771 | 2013-07-11 15:34:51 +0200 | [diff] [blame] | 1032 | $(call filechk,kernel.release) |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 1033 | |
| 1034 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | # Things we need to do before we recursively start building the kernel |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1036 | # or the modules are listed in "prepare". |
| 1037 | # A multi level approach is used. prepareN is processed before prepareN-1. |
| 1038 | # archprepare is used in arch Makefiles and when processed asm symlink, |
| 1039 | # version.h and scripts_basic is processed / created. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1041 | # Listed in dependency order |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1042 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1043 | |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 1044 | # 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] | 1045 | # and if so do: |
| 1046 | # 1) Check that make has not been executed in the kernel src $(srctree) |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 1047 | prepare3: include/config/kernel.release |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | ifneq ($(KBUILD_SRC),) |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1049 | @$(kecho) ' Using $(srctree) as source for kernel' |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 1050 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
Michal Marek | 5369f55 | 2012-07-07 23:04:40 +0200 | [diff] [blame] | 1051 | echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
| 1052 | echo >&2 " in the '$(srctree)' directory.";\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | /bin/false; \ |
| 1054 | fi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | endif |
| 1056 | |
Kees Cook | c965b10 | 2016-07-26 15:21:17 -0700 | [diff] [blame] | 1057 | # prepare2 creates a makefile if using a separate output directory. |
| 1058 | # From this point forward, .config has been reprocessed, so any rules |
| 1059 | # that need to depend on updated CONFIG_* values can be checked here. |
| 1060 | prepare2: prepare3 prepare-compiler-check outputmakefile asm-generic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 1062 | prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
Sam Ravnborg | f7f16b7 | 2009-10-18 00:00:43 +0200 | [diff] [blame] | 1063 | include/config/auto.conf |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1064 | $(cmd_crmodverdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | |
H. Peter Anvin | 6520fe5 | 2012-05-08 21:22:24 +0300 | [diff] [blame] | 1066 | archprepare: archheaders archscripts prepare1 scripts_basic |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1067 | |
Emese Revfy | 6b90bd4 | 2016-05-24 00:09:38 +0200 | [diff] [blame] | 1068 | prepare0: archprepare gcc-plugins |
Sam Ravnborg | 8d36a62 | 2005-09-10 21:05:36 +0200 | [diff] [blame] | 1069 | $(Q)$(MAKE) $(build)=. |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 1070 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | # All the preparing.. |
Josh Poimboeuf | b9ab5eb | 2016-02-28 22:22:42 -0600 | [diff] [blame] | 1072 | prepare: prepare0 prepare-objtool |
| 1073 | |
| 1074 | PHONY += prepare-objtool |
Josh Poimboeuf | 3b27a0c | 2016-03-03 11:39:30 -0600 | [diff] [blame] | 1075 | prepare-objtool: $(objtool_target) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | |
Kees Cook | c965b10 | 2016-07-26 15:21:17 -0700 | [diff] [blame] | 1077 | # Check for CONFIG flags that require compiler support. Abort the build |
| 1078 | # after .config has been processed, but before the kernel build starts. |
| 1079 | # |
| 1080 | # For security-sensitive CONFIG options, we don't want to fallback and/or |
| 1081 | # silently change which compiler flags will be used, since that leads to |
| 1082 | # producing kernels with different security feature characteristics |
| 1083 | # depending on the compiler used. (For example, "But I selected |
| 1084 | # CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") |
| 1085 | PHONY += prepare-compiler-check |
| 1086 | prepare-compiler-check: FORCE |
| 1087 | # Make sure compiler supports requested stack protector flag. |
| 1088 | ifdef stackp-name |
| 1089 | ifeq ($(call cc-option, $(stackp-flag)),) |
| 1090 | @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ |
| 1091 | $(stackp-flag) not supported by compiler >&2 && exit 1 |
| 1092 | endif |
| 1093 | endif |
| 1094 | # Make sure compiler does not have buggy stack-protector support. |
| 1095 | ifdef stackp-check |
| 1096 | ifneq ($(shell $(CONFIG_SHELL) $(stackp-check) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y) |
| 1097 | @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ |
| 1098 | $(stackp-flag) available but compiler is broken >&2 && exit 1 |
| 1099 | endif |
| 1100 | endif |
| 1101 | @: |
| 1102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | # Generate some files |
| 1104 | # --------------------------------------------------------------------------- |
| 1105 | |
| 1106 | # KERNELRELEASE can change from a few different places, meaning version.h |
| 1107 | # needs to be updated, so this check is forced on all builds |
| 1108 | |
| 1109 | uts_len := 64 |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1110 | define filechk_utsrelease.h |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1112 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
| 1113 | exit 1; \ |
| 1114 | fi; \ |
| 1115 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | endef |
| 1117 | |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1118 | define filechk_version.h |
Jesper Juhl | 450c607 | 2012-02-16 22:49:15 +0100 | [diff] [blame] | 1119 | (echo \#define LINUX_VERSION_CODE $(shell \ |
| 1120 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1121 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
| 1122 | endef |
| 1123 | |
David Howells | d183e6f | 2012-10-02 18:01:56 +0100 | [diff] [blame] | 1124 | $(version_h): $(srctree)/Makefile FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | $(call filechk,version.h) |
Michal Marek | 223c24a | 2014-11-27 16:13:17 +0100 | [diff] [blame] | 1126 | $(Q)rm -f $(old_version_h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | |
Sam Ravnborg | 273b281 | 2009-10-18 00:52:28 +0200 | [diff] [blame] | 1128 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1129 | $(call filechk,utsrelease.h) |
| 1130 | |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 1131 | PHONY += headerdep |
| 1132 | headerdep: |
Peter Foley | 9663d98 | 2011-04-26 17:17:11 -0400 | [diff] [blame] | 1133 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
| 1134 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 1135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | # --------------------------------------------------------------------------- |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1137 | # Kernel headers |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1138 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 1139 | #Default location for installed headers |
| 1140 | export INSTALL_HDR_PATH = $(objtree)/usr |
| 1141 | |
Masahiro Yamada | 0f042ee | 2017-07-10 03:32:34 +0900 | [diff] [blame] | 1142 | # If we do an all arch process set dst to include/arch-$(hdr-arch) |
Nicolas Dichtel | 61562f9 | 2017-03-27 14:20:16 +0200 | [diff] [blame] | 1143 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(hdr-arch), dst=include) |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 1144 | |
H. Peter Anvin | 052ad27 | 2011-11-17 13:17:35 -0800 | [diff] [blame] | 1145 | PHONY += archheaders |
| 1146 | archheaders: |
| 1147 | |
H. Peter Anvin | 6520fe5 | 2012-05-08 21:22:24 +0300 | [diff] [blame] | 1148 | PHONY += archscripts |
| 1149 | archscripts: |
| 1150 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 1151 | PHONY += __headers |
Masahiro Yamada | a9d9a40 | 2017-07-10 03:32:59 +0900 | [diff] [blame] | 1152 | __headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts |
Mike Waychison | e1b702c | 2011-03-14 23:34:25 -0700 | [diff] [blame] | 1153 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
David Woodhouse | 6d71627 | 2006-09-24 22:16:03 +0100 | [diff] [blame] | 1154 | |
| 1155 | PHONY += headers_install_all |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1156 | headers_install_all: |
| 1157 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
David Woodhouse | 6d71627 | 2006-09-24 22:16:03 +0100 | [diff] [blame] | 1158 | |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1159 | PHONY += headers_install |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 1160 | headers_install: __headers |
David Howells | 10b6395 | 2012-10-02 18:01:57 +0100 | [diff] [blame] | 1161 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
| 1162 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
Masahiro Yamada | a8ff49a | 2017-07-10 03:32:35 +0900 | [diff] [blame] | 1163 | $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include |
Nicolas Dichtel | 61562f9 | 2017-03-27 14:20:16 +0200 | [diff] [blame] | 1164 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1165 | |
Mike Frysinger | 1f85712 | 2007-02-14 00:33:02 -0800 | [diff] [blame] | 1166 | PHONY += headers_check_all |
| 1167 | headers_check_all: headers_install_all |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1168 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
Mike Frysinger | 1f85712 | 2007-02-14 00:33:02 -0800 | [diff] [blame] | 1169 | |
David Woodhouse | 6847535 | 2006-06-18 12:02:10 +0100 | [diff] [blame] | 1170 | PHONY += headers_check |
| 1171 | headers_check: headers_install |
Masahiro Yamada | a8ff49a | 2017-07-10 03:32:35 +0900 | [diff] [blame] | 1172 | $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1 |
Masahiro Yamada | 05d8cba | 2017-05-16 14:15:03 +0900 | [diff] [blame] | 1173 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) HDRCHECK=1 |
David Woodhouse | 6847535 | 2006-06-18 12:02:10 +0100 | [diff] [blame] | 1174 | |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1175 | # --------------------------------------------------------------------------- |
Shuah Khan | 5a5da78 | 2014-08-07 13:07:46 -0600 | [diff] [blame] | 1176 | # Kernel selftest |
| 1177 | |
| 1178 | PHONY += kselftest |
| 1179 | kselftest: |
Shuah Khan | 2bc8452 | 2017-09-06 16:44:35 -0600 | [diff] [blame] | 1180 | $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests |
Shuah Khan | 5a5da78 | 2014-08-07 13:07:46 -0600 | [diff] [blame] | 1181 | |
Shuah Khan | 801d2e9 | 2017-08-18 15:54:41 -0600 | [diff] [blame] | 1182 | PHONY += kselftest-clean |
Wang Long | dcb825a | 2015-10-08 02:41:18 +0000 | [diff] [blame] | 1183 | kselftest-clean: |
Shuah Khan | 2bc8452 | 2017-09-06 16:44:35 -0600 | [diff] [blame] | 1184 | $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean |
Wang Long | dcb825a | 2015-10-08 02:41:18 +0000 | [diff] [blame] | 1185 | |
Bamvor Jian Zhang | 3d6dee7 | 2016-01-08 15:27:34 +0800 | [diff] [blame] | 1186 | PHONY += kselftest-merge |
| 1187 | kselftest-merge: |
| 1188 | $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) |
| 1189 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ |
| 1190 | -m $(objtree)/.config \ |
| 1191 | $(srctree)/tools/testing/selftests/*/config |
| 1192 | +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig |
| 1193 | |
Shuah Khan | 5a5da78 | 2014-08-07 13:07:46 -0600 | [diff] [blame] | 1194 | # --------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | # Modules |
| 1196 | |
| 1197 | ifdef CONFIG_MODULES |
| 1198 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1199 | # By default, build modules as well |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | |
Michal Marek | 73d1393 | 2010-03-10 12:28:58 +0100 | [diff] [blame] | 1201 | all: modules |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | |
Masahiro Yamada | 3fbb43d | 2014-04-28 16:32:43 +0900 | [diff] [blame] | 1203 | # Build modules |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1204 | # |
Masahiro Yamada | 3fbb43d | 2014-04-28 16:32:43 +0900 | [diff] [blame] | 1205 | # A module can be listed more than once in obj-m resulting in |
| 1206 | # duplicate lines in modules.order files. Those are removed |
| 1207 | # using awk while concatenating to the final file. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1209 | PHONY += modules |
Michal Marek | 2da30e7 | 2010-06-07 22:22:12 +0200 | [diff] [blame] | 1210 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1211 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1212 | @$(kecho) ' Building modules, stage 2.'; |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1213 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | |
Michal Marek | a6c3663 | 2010-03-08 10:07:12 +0100 | [diff] [blame] | 1215 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
| 1216 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin |
| 1217 | |
Michal Marek | 73d1393 | 2010-03-10 12:28:58 +0100 | [diff] [blame] | 1218 | %/modules.builtin: include/config/auto.conf |
Michal Marek | a6c3663 | 2010-03-08 10:07:12 +0100 | [diff] [blame] | 1219 | $(Q)$(MAKE) $(modbuiltin)=$* |
| 1220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | |
| 1222 | # Target to prepare building external modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1223 | PHONY += modules_prepare |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1224 | modules_prepare: prepare scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | |
| 1226 | # Target to install modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1227 | PHONY += modules_install |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | modules_install: _modinst_ _modinst_post |
| 1229 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1230 | PHONY += _modinst_ |
Michal Marek | 2da30e7 | 2010-06-07 22:22:12 +0200 | [diff] [blame] | 1231 | _modinst_: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | @rm -rf $(MODLIB)/kernel |
| 1233 | @rm -f $(MODLIB)/source |
| 1234 | @mkdir -p $(MODLIB)/kernel |
Masahiro Yamada | 8e9b466 | 2017-08-20 15:04:11 +0900 | [diff] [blame] | 1235 | @ln -s $(abspath $(srctree)) $(MODLIB)/source |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
| 1237 | rm -f $(MODLIB)/build ; \ |
Michal Marek | 7e1c047 | 2014-04-25 17:29:45 +0200 | [diff] [blame] | 1238 | ln -s $(CURDIR) $(MODLIB)/build ; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | fi |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1240 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
Michal Marek | bc081dd | 2009-12-07 16:38:33 +0100 | [diff] [blame] | 1241 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1242 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1244 | # This depmod is only for convenience to give the initial |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | # boot a modules.dep even before / is mounted read-write. However the |
| 1246 | # boot script depmod is the master version. |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1247 | PHONY += _modinst_post |
Linus Torvalds | 6d128e1 | 2013-07-10 19:02:51 -0700 | [diff] [blame] | 1248 | _modinst_post: _modinst_ |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1249 | $(call cmd,depmod) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | |
Josh Boyer | d890f51 | 2012-11-05 09:09:24 +1030 | [diff] [blame] | 1251 | ifeq ($(CONFIG_MODULE_SIG), y) |
| 1252 | PHONY += modules_sign |
| 1253 | modules_sign: |
| 1254 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign |
| 1255 | endif |
| 1256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | else # CONFIG_MODULES |
| 1258 | |
| 1259 | # Modules not configured |
| 1260 | # --------------------------------------------------------------------------- |
| 1261 | |
Masahiro Yamada | 612e47c | 2016-03-13 09:39:22 +0900 | [diff] [blame] | 1262 | PHONY += modules modules_install |
| 1263 | modules modules_install: |
Michal Marek | 5369f55 | 2012-07-07 23:04:40 +0200 | [diff] [blame] | 1264 | @echo >&2 |
| 1265 | @echo >&2 "The present kernel configuration has modules disabled." |
| 1266 | @echo >&2 "Type 'make config' and enable loadable module support." |
| 1267 | @echo >&2 "Then build a kernel with module support enabled." |
| 1268 | @echo >&2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | @exit 1 |
| 1270 | |
| 1271 | endif # CONFIG_MODULES |
| 1272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | ### |
| 1274 | # Cleaning is done on three levels. |
| 1275 | # make clean Delete most generated files |
| 1276 | # Leave enough to build external modules |
| 1277 | # make mrproper Delete the current configuration, and all generated files |
| 1278 | # make distclean Remove editor backup files, patch leftover files and the like |
| 1279 | |
| 1280 | # Directories & files removed with 'make clean' |
| 1281 | CLEAN_DIRS += $(MODVERDIR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | |
| 1283 | # Directories & files removed with 'make mrproper' |
Sam Ravnborg | d8ecc5c | 2011-04-27 22:29:49 +0200 | [diff] [blame] | 1284 | MRPROPER_DIRS += include/config usr/include include/generated \ |
Masahiro Yamada | 3fbb43d | 2014-04-28 16:32:43 +0900 | [diff] [blame] | 1285 | arch/*/include/generated .tmp_objdiff |
Masahiro Yamada | c22bd32c | 2015-01-08 17:29:38 +0900 | [diff] [blame] | 1286 | MRPROPER_FILES += .config .config.old .version .old_version \ |
Rusty Russell | d5b7193 | 2012-10-02 14:35:24 +0930 | [diff] [blame] | 1287 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
David Woodhouse | fb11794 | 2015-07-20 21:16:30 +0100 | [diff] [blame] | 1288 | signing_key.pem signing_key.priv signing_key.x509 \ |
| 1289 | x509.genkey extra_certificates signing_key.x509.keyid \ |
Jan Kiszka | 3ee7b3f | 2015-02-17 13:46:36 -0800 | [diff] [blame] | 1290 | signing_key.x509.signer vmlinux-gdb.py |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | |
| 1292 | # clean - Delete most, but leave enough to build external modules |
| 1293 | # |
| 1294 | clean: rm-dirs := $(CLEAN_DIRS) |
| 1295 | clean: rm-files := $(CLEAN_FILES) |
Gerard Snitselaar | fb68d4b | 2012-02-04 02:55:59 -0700 | [diff] [blame] | 1296 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | |
Pawel Moll | bd1ee80 | 2012-10-29 11:23:02 +0000 | [diff] [blame] | 1298 | PHONY += $(clean-dirs) clean archclean vmlinuxclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | $(clean-dirs): |
| 1300 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| 1301 | |
Pawel Moll | bd1ee80 | 2012-10-29 11:23:02 +0000 | [diff] [blame] | 1302 | vmlinuxclean: |
| 1303 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean |
Nicholas Piggin | fbe6e37 | 2016-08-24 22:29:21 +1000 | [diff] [blame] | 1304 | $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) |
Pawel Moll | bd1ee80 | 2012-10-29 11:23:02 +0000 | [diff] [blame] | 1305 | |
| 1306 | clean: archclean vmlinuxclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | |
| 1308 | # mrproper - Delete all generated files, including .config |
| 1309 | # |
| 1310 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
| 1311 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
Mauro Carvalho Chehab | cb43fb5 | 2017-05-14 11:50:01 -0300 | [diff] [blame] | 1312 | mrproper-dirs := $(addprefix _mrproper_,scripts) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1314 | PHONY += $(mrproper-dirs) mrproper archmrproper |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | $(mrproper-dirs): |
| 1316 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
| 1317 | |
| 1318 | mrproper: clean archmrproper $(mrproper-dirs) |
| 1319 | $(call cmd,rmdirs) |
| 1320 | $(call cmd,rmfiles) |
| 1321 | |
| 1322 | # distclean |
| 1323 | # |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1324 | PHONY += distclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | |
| 1326 | distclean: mrproper |
| 1327 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1328 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
Masahiro Yamada | f78271d | 2017-01-22 23:02:32 +0900 | [diff] [blame] | 1329 | -o -name '*.bak' -o -name '#*#' -o -name '*%' \ |
| 1330 | -o -name 'core' \) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | -type f -print | xargs rm -f |
| 1332 | |
| 1333 | |
| 1334 | # Packaging of the kernel to various formats |
| 1335 | # --------------------------------------------------------------------------- |
| 1336 | # rpm target kept for backward compatibility |
Michal Marek | c79624c | 2014-07-04 22:53:52 +0200 | [diff] [blame] | 1337 | package-dir := scripts/package |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | |
Arnaldo Carvalho de Melo | bafb674 | 2010-06-07 07:44:25 -0300 | [diff] [blame] | 1339 | %src-pkg: FORCE |
| 1340 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Zach Brown | 031ecc6 | 2006-06-08 22:12:37 -0700 | [diff] [blame] | 1341 | %pkg: include/config/kernel.release FORCE |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1342 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Zach Brown | 031ecc6 | 2006-06-08 22:12:37 -0700 | [diff] [blame] | 1343 | rpm: include/config/kernel.release FORCE |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1344 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | |
| 1346 | |
| 1347 | # Brief documentation of the typical targets used |
| 1348 | # --------------------------------------------------------------------------- |
| 1349 | |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1350 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
Konstantin Khlebnikov | a1e7b7b | 2014-10-28 17:18:20 +0400 | [diff] [blame] | 1351 | boards := $(sort $(notdir $(boards))) |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1352 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
| 1353 | board-dirs := $(sort $(notdir $(board-dirs:/=))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | |
Masahiro Yamada | fe69b42 | 2016-03-13 09:39:55 +0900 | [diff] [blame] | 1355 | PHONY += help |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | help: |
| 1357 | @echo 'Cleaning targets:' |
Samuel Tardieu | 5ea084e | 2006-12-12 19:09:40 +0100 | [diff] [blame] | 1358 | @echo ' clean - Remove most generated files but keep the config and' |
Jesper Juhl | 5cc8d24 | 2006-09-24 14:01:08 +0200 | [diff] [blame] | 1359 | @echo ' enough build support to build external modules' |
Samuel Tardieu | 5ea084e | 2006-12-12 19:09:40 +0100 | [diff] [blame] | 1360 | @echo ' mrproper - Remove all generated files + config + various backup files' |
Jesper Juhl | 5cc8d24 | 2006-09-24 14:01:08 +0200 | [diff] [blame] | 1361 | @echo ' distclean - mrproper + remove editor backup and patch files' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | @echo '' |
| 1363 | @echo 'Configuration targets:' |
| 1364 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
| 1365 | @echo '' |
| 1366 | @echo 'Other generic targets:' |
| 1367 | @echo ' all - Build all targets marked with [*]' |
| 1368 | @echo '* vmlinux - Build the bare kernel' |
| 1369 | @echo '* modules - Build all modules' |
Bodo Eggert | 9cc5d74 | 2005-11-23 20:11:34 +0100 | [diff] [blame] | 1370 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | @echo ' dir/ - Build all files in dir and below' |
Wang YanQing | 40ab87a | 2015-12-11 00:35:19 +0800 | [diff] [blame] | 1372 | @echo ' dir/file.[ois] - Build specified target only' |
Vinícius Tinti | 433db3e | 2017-04-24 13:04:58 -0700 | [diff] [blame] | 1373 | @echo ' dir/file.ll - Build the LLVM assembly file' |
| 1374 | @echo ' (requires compiler support for LLVM assembly generation)' |
Joe Perches | 6271897 | 2010-01-13 09:31:44 -0800 | [diff] [blame] | 1375 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' |
| 1376 | @echo ' (requires a recent binutils and recent build (System.map))' |
Sam Ravnborg | 155ad60 | 2005-07-07 17:56:08 -0700 | [diff] [blame] | 1377 | @echo ' dir/file.ko - Build module including final link' |
Robert P. J. Day | c4d5ee6 | 2009-04-24 12:35:23 -0400 | [diff] [blame] | 1378 | @echo ' modules_prepare - Set up for building external modules' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | @echo ' tags/TAGS - Generate tags file for editors' |
| 1380 | @echo ' cscope - Generate cscope index' |
Jianbin Kang | f4ed100 | 2011-01-14 20:07:05 +0800 | [diff] [blame] | 1381 | @echo ' gtags - Generate GNU GLOBAL index' |
Michal Marek | 3f1d9a6 | 2014-07-11 15:57:24 +0200 | [diff] [blame] | 1382 | @echo ' kernelrelease - Output the release version string (use with make -s)' |
| 1383 | @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' |
| 1384 | @echo ' image_name - Output the image name (use with make -s)' |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1385 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
Geert Uytterhoeven | 59df323 | 2007-01-29 13:47:01 +0100 | [diff] [blame] | 1386 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1387 | echo '' |
Randy Dunlap | 31b8cc8 | 2017-05-08 15:55:08 -0700 | [diff] [blame] | 1388 | @echo 'Static analysers:' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | @echo ' checkstack - Generate a list of stack hogs' |
| 1390 | @echo ' namespacecheck - Name space analysis on compiled kernel' |
Sam Ravnborg | aa025e7 | 2007-11-14 21:34:55 +0100 | [diff] [blame] | 1391 | @echo ' versioncheck - Sanity check on version.h usage' |
Randy Dunlap | ec2d987 | 2007-11-04 12:01:55 -0800 | [diff] [blame] | 1392 | @echo ' includecheck - Check for duplicate included header files' |
Adrian Bunk | 295ac05 | 2007-08-24 23:04:56 +0200 | [diff] [blame] | 1393 | @echo ' export_report - List the usages of all exported symbols' |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 1394 | @echo ' headers_check - Sanity check on exported headers' |
Nicolas Palix | 74425ee | 2010-06-06 17:15:01 +0200 | [diff] [blame] | 1395 | @echo ' headerdep - Detect inclusion cycles in headers' |
| 1396 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help |
| 1397 | @echo '' |
Randy Dunlap | 31b8cc8 | 2017-05-08 15:55:08 -0700 | [diff] [blame] | 1398 | @echo 'Kernel selftest:' |
Shuah Khan | 5a5da78 | 2014-08-07 13:07:46 -0600 | [diff] [blame] | 1399 | @echo ' kselftest - Build and run kernel selftest (run as root)' |
| 1400 | @echo ' Build, install, and boot kernel before' |
| 1401 | @echo ' running kselftest on it' |
Wang Long | dcb825a | 2015-10-08 02:41:18 +0000 | [diff] [blame] | 1402 | @echo ' kselftest-clean - Remove all generated kselftest files' |
Randy Dunlap | bbfe63b | 2017-10-06 17:17:52 -0700 | [diff] [blame] | 1403 | @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' |
Bamvor Jian Zhang | 3d6dee7 | 2016-01-08 15:27:34 +0800 | [diff] [blame] | 1404 | @echo ' .config.' |
Shuah Khan | 5a5da78 | 2014-08-07 13:07:46 -0600 | [diff] [blame] | 1405 | @echo '' |
Randy Dunlap | 31b8cc8 | 2017-05-08 15:55:08 -0700 | [diff] [blame] | 1406 | @echo 'Userspace tools targets:' |
| 1407 | @echo ' use "make tools/help"' |
| 1408 | @echo ' or "cd tools; make help"' |
| 1409 | @echo '' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | @echo 'Kernel packaging:' |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1411 | @$(MAKE) $(build)=$(package-dir) help |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | @echo '' |
| 1413 | @echo 'Documentation targets:' |
Mauro Carvalho Chehab | cb43fb5 | 2017-05-14 11:50:01 -0300 | [diff] [blame] | 1414 | @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | @echo '' |
Andres Salomon | 01dee18 | 2008-04-25 22:34:58 -0400 | [diff] [blame] | 1416 | @echo 'Architecture specific targets ($(SRCARCH)):' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | @$(if $(archhelp),$(archhelp),\ |
Andres Salomon | 01dee18 | 2008-04-25 22:34:58 -0400 | [diff] [blame] | 1418 | echo ' No architecture specific help defined for $(SRCARCH)') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | @echo '' |
| 1420 | @$(if $(boards), \ |
| 1421 | $(foreach b, $(boards), \ |
| 1422 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
| 1423 | echo '') |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1424 | @$(if $(board-dirs), \ |
| 1425 | $(foreach b, $(board-dirs), \ |
| 1426 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ |
| 1427 | printf " %-16s - Show all of the above\\n" help-boards; \ |
| 1428 | echo '') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | |
| 1430 | @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] | 1431 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
Cao jin | 9ba26a7 | 2017-06-06 17:07:53 +0800 | [diff] [blame] | 1433 | @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' |
Dustin Kirkland | 701842e | 2006-05-23 15:57:23 -0500 | [diff] [blame] | 1434 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
Ingo Molnar | af07ce3 | 2011-06-16 13:26:23 +0200 | [diff] [blame] | 1435 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
Sam Ravnborg | 28bc20d | 2011-04-27 22:15:27 +0200 | [diff] [blame] | 1436 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
| 1437 | @echo ' 1: warnings which may be relevant and do not occur too often' |
| 1438 | @echo ' 2: warnings which occur quite often but may still be relevant' |
| 1439 | @echo ' 3: more obscure warnings, can most likely be ignored' |
Michal Marek | a6de553 | 2011-04-29 14:45:31 +0200 | [diff] [blame] | 1440 | @echo ' Multiple levels can be combined with W=12 or W=123' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | @echo '' |
| 1442 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
| 1443 | @echo 'For further info see the ./README file' |
| 1444 | |
| 1445 | |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1446 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
| 1447 | |
| 1448 | help-boards: $(help-board-dirs) |
| 1449 | |
Michal Marek | fbae4d5 | 2014-11-28 13:31:43 +0100 | [diff] [blame] | 1450 | boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1451 | |
| 1452 | $(help-board-dirs): help-%: |
| 1453 | @echo 'Architecture specific targets ($(SRCARCH) $*):' |
| 1454 | @$(if $(boards-per-dir), \ |
| 1455 | $(foreach b, $(boards-per-dir), \ |
| 1456 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ |
| 1457 | echo '') |
| 1458 | |
| 1459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | # Documentation targets |
| 1461 | # --------------------------------------------------------------------------- |
Mauro Carvalho Chehab | 18afab8 | 2017-07-17 18:46:35 -0300 | [diff] [blame] | 1462 | DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs linkcheckdocs |
Jani Nikula | 22cba31 | 2016-05-19 15:14:05 +0300 | [diff] [blame] | 1463 | PHONY += $(DOC_TARGETS) |
| 1464 | $(DOC_TARGETS): scripts_basic FORCE |
Mauro Carvalho Chehab | cb43fb5 | 2017-05-14 11:50:01 -0300 | [diff] [blame] | 1465 | $(Q)$(MAKE) $(build)=Documentation $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | |
| 1467 | else # KBUILD_EXTMOD |
| 1468 | |
| 1469 | ### |
| 1470 | # External module support. |
| 1471 | # When building external modules the kernel used as basis is considered |
| 1472 | # read-only, and no consistency checks are made and the make |
| 1473 | # system is not used on the basis kernel. If updates are required |
| 1474 | # in the basis kernel ordinary make commands (without M=...) must |
| 1475 | # be used. |
| 1476 | # |
| 1477 | # The following are the only valid targets when building external |
| 1478 | # modules. |
| 1479 | # make M=dir clean Delete all automatically generated files |
| 1480 | # make M=dir modules Make all modules in specified dir |
| 1481 | # make M=dir Same as 'make M=dir modules' |
| 1482 | # make M=dir modules_install |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1483 | # Install the modules built in the module directory |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | # Assumes install directory is already created |
| 1485 | |
| 1486 | # We are always building modules |
| 1487 | KBUILD_MODULES := 1 |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1488 | PHONY += crmodverdir |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1489 | crmodverdir: |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1490 | $(cmd_crmodverdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1492 | PHONY += $(objtree)/Module.symvers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | $(objtree)/Module.symvers: |
| 1494 | @test -e $(objtree)/Module.symvers || ( \ |
| 1495 | echo; \ |
| 1496 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
| 1497 | echo " is missing; modules will have no dependencies and modversions."; \ |
| 1498 | echo ) |
| 1499 | |
| 1500 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1501 | PHONY += $(module-dirs) modules |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
| 1503 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
| 1504 | |
| 1505 | modules: $(module-dirs) |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1506 | @$(kecho) ' Building modules, stage 2.'; |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1507 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1509 | PHONY += modules_install |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1510 | modules_install: _emodinst_ _emodinst_post |
Adrian Bunk | e630466 | 2006-02-14 15:58:15 +0100 | [diff] [blame] | 1511 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1512 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
| 1513 | PHONY += _emodinst_ |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1514 | _emodinst_: |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1515 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1516 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1518 | PHONY += _emodinst_post |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1519 | _emodinst_post: _emodinst_ |
| 1520 | $(call cmd,depmod) |
| 1521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
| 1523 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1524 | PHONY += $(clean-dirs) clean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | $(clean-dirs): |
| 1526 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| 1527 | |
| 1528 | clean: rm-dirs := $(MODVERDIR) |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1529 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | |
Masahiro Yamada | fe69b42 | 2016-03-13 09:39:55 +0900 | [diff] [blame] | 1531 | PHONY += help |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | help: |
| 1533 | @echo ' Building external modules.' |
| 1534 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
| 1535 | @echo '' |
| 1536 | @echo ' modules - default target, build the module(s)' |
| 1537 | @echo ' modules_install - install the module' |
| 1538 | @echo ' clean - remove generated files in module directory only' |
| 1539 | @echo '' |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1540 | |
| 1541 | # Dummies... |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1542 | PHONY += prepare scripts |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1543 | prepare: ; |
| 1544 | scripts: ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | endif # KBUILD_EXTMOD |
| 1546 | |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1547 | clean: $(clean-dirs) |
| 1548 | $(call cmd,rmdirs) |
| 1549 | $(call cmd,rmfiles) |
Kevin Cernekee | 43f67c9 | 2011-05-10 15:47:16 -0700 | [diff] [blame] | 1550 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1551 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
David Howells | addbcdb | 2012-09-26 10:09:50 +0100 | [diff] [blame] | 1552 | -o -name '*.ko.*' \ |
Andi Kleen | 866ced9 | 2014-07-30 20:50:18 +0200 | [diff] [blame] | 1553 | -o -name '*.dwo' \ |
Rasmus Villemoes | d523b25 | 2015-08-20 11:53:29 +0200 | [diff] [blame] | 1554 | -o -name '*.su' \ |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1555 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
| 1556 | -o -name '*.symtypes' -o -name 'modules.order' \ |
| 1557 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ |
Emese Revfy | 6b90bd4 | 2016-05-24 00:09:38 +0200 | [diff] [blame] | 1558 | -o -name '*.c.[012]*.*' \ |
Vinícius Tinti | 433db3e | 2017-04-24 13:04:58 -0700 | [diff] [blame] | 1559 | -o -name '*.ll' \ |
Michal Marek | 88d7be0 | 2010-09-06 12:00:08 +0200 | [diff] [blame] | 1560 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
| 1561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | # Generate tags for editors |
| 1563 | # --------------------------------------------------------------------------- |
Sam Ravnborg | a680eed | 2008-12-03 22:24:13 +0100 | [diff] [blame] | 1564 | quiet_cmd_tags = GEN $@ |
| 1565 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1566 | |
Jianbin Kang | f4ed100 | 2011-01-14 20:07:05 +0800 | [diff] [blame] | 1567 | tags TAGS cscope gtags: FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | $(call cmd,tags) |
| 1569 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | # Scripts to check various things for consistency |
| 1571 | # --------------------------------------------------------------------------- |
| 1572 | |
Peter Foley | 279f3dd | 2011-04-26 17:15:01 -0400 | [diff] [blame] | 1573 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
| 1574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | includecheck: |
Peter Foley | 436f876 | 2011-04-26 17:18:29 -0400 | [diff] [blame] | 1576 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | -name '*.[hcS]' -type f -print | sort \ |
Geert Uytterhoeven | 8000743 | 2007-11-05 11:51:44 +0100 | [diff] [blame] | 1578 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | |
| 1580 | versioncheck: |
Peter Foley | 2ee2d29 | 2011-04-26 17:19:28 -0400 | [diff] [blame] | 1581 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | -name '*.[hcS]' -type f -print | sort \ |
Geert Uytterhoeven | 8000743 | 2007-11-05 11:51:44 +0100 | [diff] [blame] | 1583 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | |
Nicolas Palix | 74425ee | 2010-06-06 17:15:01 +0200 | [diff] [blame] | 1585 | coccicheck: |
| 1586 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
| 1587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | namespacecheck: |
| 1589 | $(PERL) $(srctree)/scripts/namespace.pl |
| 1590 | |
Adrian Bunk | 295ac05 | 2007-08-24 23:04:56 +0200 | [diff] [blame] | 1591 | export_report: |
| 1592 | $(PERL) $(srctree)/scripts/export_report.pl |
| 1593 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | endif #ifeq ($(config-targets),1) |
| 1595 | endif #ifeq ($(mixed-targets),1) |
| 1596 | |
Mike Marciniszyn | c398ff0 | 2013-06-24 08:48:37 -0400 | [diff] [blame] | 1597 | PHONY += checkstack kernelrelease kernelversion image_name |
Jeff Dike | e3ccf6e | 2006-09-27 01:50:37 -0700 | [diff] [blame] | 1598 | |
Jeff Dike | 011e3a9 | 2006-12-13 00:34:12 -0800 | [diff] [blame] | 1599 | # UML needs a little special treatment here. It wants to use the host |
| 1600 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone |
| 1601 | # else wants $(ARCH), including people doing cross-builds, which means |
| 1602 | # that $(SUBARCH) doesn't work here. |
| 1603 | ifeq ($(ARCH), um) |
| 1604 | CHECKSTACK_ARCH := $(SUBARCH) |
| 1605 | else |
| 1606 | CHECKSTACK_ARCH := $(ARCH) |
| 1607 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | checkstack: |
| 1609 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
Jeff Dike | 011e3a9 | 2006-12-13 00:34:12 -0800 | [diff] [blame] | 1610 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | |
Amerigo Wang | 7b8ea53 | 2010-08-20 05:36:06 -0400 | [diff] [blame] | 1612 | kernelrelease: |
| 1613 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
Amerigo Wang | 01ab178 | 2010-06-28 10:45:21 +0800 | [diff] [blame] | 1614 | |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 1615 | kernelversion: |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 1616 | @echo $(KERNELVERSION) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | |
Mike Marciniszyn | c398ff0 | 2013-06-24 08:48:37 -0400 | [diff] [blame] | 1618 | image_name: |
| 1619 | @echo $(KBUILD_IMAGE) |
| 1620 | |
Borislav Petkov | ea01fa9 | 2012-04-11 18:36:18 +0200 | [diff] [blame] | 1621 | # Clear a bunch of variables before executing the submake |
| 1622 | tools/: FORCE |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 1623 | $(Q)mkdir -p $(objtree)/tools |
Masahiro Yamada | 8e9b466 | 2017-08-20 15:04:11 +0900 | [diff] [blame] | 1624 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ |
Borislav Petkov | ea01fa9 | 2012-04-11 18:36:18 +0200 | [diff] [blame] | 1625 | |
| 1626 | tools/%: FORCE |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 1627 | $(Q)mkdir -p $(objtree)/tools |
Masahiro Yamada | 8e9b466 | 2017-08-20 15:04:11 +0900 | [diff] [blame] | 1628 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ $* |
Borislav Petkov | ea01fa9 | 2012-04-11 18:36:18 +0200 | [diff] [blame] | 1629 | |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1630 | # Single targets |
| 1631 | # --------------------------------------------------------------------------- |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1632 | # Single targets are compatible with: |
Robert P. J. Day | e1b8513 | 2008-02-03 15:14:02 +0200 | [diff] [blame] | 1633 | # - build with mixed source and output |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1634 | # - build with separate output dir 'make O=...' |
| 1635 | # - external modules |
| 1636 | # |
| 1637 | # target-dir => where to store outputfile |
| 1638 | # build-dir => directory in kernel source tree to use |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1639 | |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1640 | ifeq ($(KBUILD_EXTMOD),) |
Sam Ravnborg | aa36087 | 2006-04-06 08:25:31 +0200 | [diff] [blame] | 1641 | build-dir = $(patsubst %/,%,$(dir $@)) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1642 | target-dir = $(dir $@) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1643 | else |
| 1644 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1645 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
| 1646 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1647 | endif |
| 1648 | |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1649 | %.s: %.c prepare scripts FORCE |
| 1650 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1651 | %.i: %.c prepare scripts FORCE |
| 1652 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1653 | %.o: %.c prepare scripts FORCE |
| 1654 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1655 | %.lst: %.c prepare scripts FORCE |
| 1656 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1657 | %.s: %.S prepare scripts FORCE |
| 1658 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1659 | %.o: %.S prepare scripts FORCE |
| 1660 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 1661 | %.symtypes: %.c prepare scripts FORCE |
| 1662 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Vinícius Tinti | 433db3e | 2017-04-24 13:04:58 -0700 | [diff] [blame] | 1663 | %.ll: %.c prepare scripts FORCE |
| 1664 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1665 | |
| 1666 | # Modules |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 1667 | /: prepare scripts FORCE |
| 1668 | $(cmd_crmodverdir) |
| 1669 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
| 1670 | $(build)=$(build-dir) |
Peter Foley | 8e2faea | 2014-09-25 11:23:58 -0700 | [diff] [blame] | 1671 | # Make sure the latest headers are built for Documentation |
Arnd Bergmann | ddea05f | 2016-07-04 16:39:35 +0200 | [diff] [blame] | 1672 | Documentation/ samples/: headers_install |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 1673 | %/: prepare scripts FORCE |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1674 | $(cmd_crmodverdir) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1675 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1676 | $(build)=$(build-dir) |
| 1677 | %.ko: prepare scripts FORCE |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1678 | $(cmd_crmodverdir) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1679 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1680 | $(build)=$(build-dir) $(@:.ko=.o) |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1681 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1682 | |
Masahiro Yamada | 38385f8 | 2014-04-28 16:26:18 +0900 | [diff] [blame] | 1683 | # FIXME Should go into a make.lib or something |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | # =========================================================================== |
| 1685 | |
| 1686 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
| 1687 | cmd_rmdirs = rm -rf $(rm-dirs) |
| 1688 | |
| 1689 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
| 1690 | cmd_rmfiles = rm -f $(rm-files) |
| 1691 | |
Uwe Kleine-König | bc3c26f | 2008-04-21 22:53:56 +0000 | [diff] [blame] | 1692 | # Run depmod only if we have System.map and depmod is executable |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1693 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
Michal Marek | 569658d | 2011-06-15 22:15:47 +0200 | [diff] [blame] | 1694 | cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
Rusty Russell | b92021b | 2013-03-15 15:04:17 +1030 | [diff] [blame] | 1695 | $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1696 | |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1697 | # Create temporary dir for module support files |
Sam Ravnborg | ab19f87 | 2007-10-22 11:23:07 +0200 | [diff] [blame] | 1698 | # clean it up only when building all modules |
| 1699 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ |
| 1700 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | # read all saved command lines |
| 1703 | |
| 1704 | targets := $(wildcard $(sort $(targets))) |
| 1705 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
| 1706 | |
| 1707 | ifneq ($(cmd_files),) |
| 1708 | $(cmd_files): ; # Do not try to update included dependency files |
| 1709 | include $(cmd_files) |
| 1710 | endif |
| 1711 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | endif # skip-makefile |
| 1713 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1714 | PHONY += FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | FORCE: |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1716 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1717 | # Declare the contents of the .PHONY variable as phony. We keep that |
Kirill Smelkov | fe8d0a4 | 2009-04-09 15:34:34 +0400 | [diff] [blame] | 1718 | # 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] | 1719 | .PHONY: $(PHONY) |