Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | VERSION = 2 |
| 2 | PATCHLEVEL = 6 |
Linus Torvalds | da5cabf | 2010-08-15 17:41:37 -0700 | [diff] [blame^] | 3 | SUBLEVEL = 36 |
| 4 | EXTRAVERSION = -rc1 |
Linus Torvalds | 01bf0b6 | 2010-04-19 16:29:56 -0700 | [diff] [blame] | 5 | NAME = Sheep on Meth |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
| 7 | # *DOCUMENTATION* |
| 8 | # To see a list of typical targets execute "make help" |
| 9 | # More info can be located in ./README |
| 10 | # Comments in this file are targeted only to the developer, do not |
| 11 | # expect to learn how to build the kernel reading this file. |
| 12 | |
Oleg Verych | 1596486 | 2006-12-10 02:18:40 -0800 | [diff] [blame] | 13 | # Do not: |
| 14 | # o use make's built-in rules and variables |
Linus Nilsson | d384e35 | 2008-01-20 17:10:01 +0100 | [diff] [blame] | 15 | # (this increases performance and avoids hard-to-debug behaviour); |
Oleg Verych | 1596486 | 2006-12-10 02:18:40 -0800 | [diff] [blame] | 16 | # o print "Entering directory ..."; |
| 17 | MAKEFLAGS += -rR --no-print-directory |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
H. Peter Anvin | c051346 | 2009-12-17 06:56:11 -0800 | [diff] [blame] | 19 | # Avoid funny character set dependencies |
H. Peter Anvin | 06b5dc6 | 2009-12-17 15:51:37 -0800 | [diff] [blame] | 20 | unexport LC_ALL |
H. Peter Anvin | c051346 | 2009-12-17 06:56:11 -0800 | [diff] [blame] | 21 | LC_COLLATE=C |
| 22 | LC_NUMERIC=C |
Michal Marek | 0710520 | 2010-01-08 12:25:37 +0100 | [diff] [blame] | 23 | export LC_COLLATE LC_NUMERIC |
H. Peter Anvin | c051346 | 2009-12-17 06:56:11 -0800 | [diff] [blame] | 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | # We are using a recursive build, so we need to do a little thinking |
| 26 | # to get the ordering right. |
| 27 | # |
| 28 | # Most importantly: sub-Makefiles should only ever modify files in |
| 29 | # their own directory. If in some directory we have a dependency on |
| 30 | # a file in another dir (which doesn't happen often, but it's often |
| 31 | # unavoidable when linking the built-in.o targets which finally |
| 32 | # turn into vmlinux), we will call a sub make in that other dir, and |
| 33 | # after that we are sure that everything which is in that other dir |
| 34 | # is now up to date. |
| 35 | # |
| 36 | # The only cases where we need to modify files which have global |
| 37 | # effects are thus separated out and done before the recursive |
| 38 | # descending is started. They are now explicitly listed as the |
| 39 | # prepare rule. |
| 40 | |
| 41 | # To put more focus on warnings, be less verbose as default |
| 42 | # Use 'make V=1' to see the full commands |
| 43 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 44 | ifeq ("$(origin V)", "command line") |
| 45 | KBUILD_VERBOSE = $(V) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | endif |
| 47 | ifndef KBUILD_VERBOSE |
| 48 | KBUILD_VERBOSE = 0 |
| 49 | endif |
| 50 | |
Robert P. J. Day | 1c7bafe | 2006-09-13 07:57:50 -0400 | [diff] [blame] | 51 | # Call a source code checker (by default, "sparse") as part of the |
| 52 | # C compilation. |
| 53 | # |
| 54 | # Use 'make C=1' to enable checking of only re-compiled files. |
| 55 | # Use 'make C=2' to enable checking of *all* source files, regardless |
| 56 | # of whether they are re-compiled or not. |
| 57 | # |
| 58 | # See the file "Documentation/sparse.txt" for more details, including |
| 59 | # where to get the "sparse" utility. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 61 | ifeq ("$(origin C)", "command line") |
| 62 | KBUILD_CHECKSRC = $(C) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | endif |
| 64 | ifndef KBUILD_CHECKSRC |
| 65 | KBUILD_CHECKSRC = 0 |
| 66 | endif |
| 67 | |
| 68 | # Use make M=dir to specify directory of external module to build |
| 69 | # Old syntax make ... SUBDIRS=$PWD is still supported |
| 70 | # Setting the environment variable KBUILD_EXTMOD take precedence |
| 71 | ifdef SUBDIRS |
| 72 | KBUILD_EXTMOD ?= $(SUBDIRS) |
| 73 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 75 | ifeq ("$(origin M)", "command line") |
| 76 | KBUILD_EXTMOD := $(M) |
| 77 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | # kbuild supports saving output files in a separate directory. |
| 80 | # To locate output files in a separate directory two syntaxes are supported. |
| 81 | # In both cases the working directory must be the root of the kernel src. |
| 82 | # 1) O= |
| 83 | # Use "make O=dir/to/store/output/files/" |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 84 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | # 2) Set KBUILD_OUTPUT |
| 86 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
| 87 | # where the output files shall be placed. |
| 88 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
| 89 | # make |
| 90 | # |
| 91 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
| 92 | # variable. |
| 93 | |
| 94 | |
| 95 | # KBUILD_SRC is set on invocation of make in OBJ directory |
| 96 | # KBUILD_SRC is not intended to be used by the regular user (for now) |
| 97 | ifeq ($(KBUILD_SRC),) |
| 98 | |
| 99 | # OK, Make called in directory where kernel src resides |
| 100 | # Do we want to locate output files in a separate directory? |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 101 | ifeq ("$(origin O)", "command line") |
| 102 | KBUILD_OUTPUT := $(O) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | endif |
| 104 | |
| 105 | # 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] | 106 | PHONY := _all |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | _all: |
| 108 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 109 | # Cancel implicit rules on top Makefile |
| 110 | $(CURDIR)/Makefile Makefile: ; |
| 111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | ifneq ($(KBUILD_OUTPUT),) |
| 113 | # Invoke a second make in the output directory, passing relevant variables |
| 114 | # check that the output directory actually exists |
| 115 | saved-output := $(KBUILD_OUTPUT) |
| 116 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) |
| 117 | $(if $(KBUILD_OUTPUT),, \ |
| 118 | $(error output directory "$(saved-output)" does not exist)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 120 | PHONY += $(MAKECMDGOALS) sub-make |
| 121 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 122 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 123 | $(Q)@: |
| 124 | |
| 125 | sub-make: FORCE |
Sam Ravnborg | 23a45e2 | 2005-07-27 09:12:07 +0200 | [diff] [blame] | 126 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
| 127 | KBUILD_SRC=$(CURDIR) \ |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 128 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
| 129 | $(filter-out _all sub-make,$(MAKECMDGOALS)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
| 131 | # Leave processing to above invocation of make |
| 132 | skip-makefile := 1 |
| 133 | endif # ifneq ($(KBUILD_OUTPUT),) |
| 134 | endif # ifeq ($(KBUILD_SRC),) |
| 135 | |
| 136 | # We process the rest of the Makefile if this is the final invocation of make |
| 137 | ifeq ($(skip-makefile),) |
| 138 | |
| 139 | # If building an external module we do not care about the all: rule |
| 140 | # but instead _all depend on modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 141 | PHONY += all |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | ifeq ($(KBUILD_EXTMOD),) |
| 143 | _all: all |
| 144 | else |
| 145 | _all: modules |
| 146 | endif |
| 147 | |
| 148 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | objtree := $(CURDIR) |
| 150 | src := $(srctree) |
| 151 | obj := $(objtree) |
| 152 | |
Mattia Dongili | 0f558c3 | 2006-02-19 13:50:37 +0100 | [diff] [blame] | 153 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | |
Amerigo Wang | 1129423 | 2009-06-19 03:40:26 -0400 | [diff] [blame] | 155 | export srctree objtree VPATH |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | |
| 158 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
| 159 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
| 160 | # line overrides the setting of ARCH below. If a native build is happening, |
| 161 | # then ARCH is assigned, getting whatever value it gets normally, and |
| 162 | # SUBARCH is subsequently ignored. |
| 163 | |
| 164 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ |
| 165 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
Linus Torvalds | 39990b5 | 2005-11-11 14:27:32 -0800 | [diff] [blame] | 166 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
Paul Mundt | 236b195 | 2007-11-02 12:22:47 +0900 | [diff] [blame] | 167 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
Paul Mundt | 3cc000b | 2009-04-11 08:39:27 +0900 | [diff] [blame] | 168 | -e s/sh[234].*/sh/ ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | |
| 170 | # Cross compiling and selecting different set of gcc/bin-utils |
| 171 | # --------------------------------------------------------------------------- |
| 172 | # |
| 173 | # When performing cross compilation for other architectures ARCH shall be set |
| 174 | # to the target architecture. (See arch/* for the possibilities). |
| 175 | # ARCH can be set during invocation of make: |
| 176 | # make ARCH=ia64 |
| 177 | # Another way is to have ARCH set in the environment. |
| 178 | # The default ARCH is the host where make is executed. |
| 179 | |
| 180 | # CROSS_COMPILE specify the prefix used for all executables used |
| 181 | # during compilation. Only gcc and related bin-utils executables |
| 182 | # are prefixed with $(CROSS_COMPILE). |
| 183 | # CROSS_COMPILE can be set on the command line |
| 184 | # make CROSS_COMPILE=ia64-linux- |
| 185 | # Alternatively CROSS_COMPILE can be set in the environment. |
Roland McGrath | 8433646 | 2009-12-21 16:24:06 -0800 | [diff] [blame] | 186 | # A third alternative is to store a setting in .config so that plain |
| 187 | # "make" in the configured kernel build directory always uses that. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | # Default value for CROSS_COMPILE is not to prefix executables |
| 189 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
Sam Ravnborg | 4ce6efe | 2008-03-23 21:38:54 +0100 | [diff] [blame] | 190 | export KBUILD_BUILDHOST := $(SUBARCH) |
Sam Ravnborg | 2331d1a | 2009-10-11 23:22:58 +0200 | [diff] [blame] | 191 | ARCH ?= $(SUBARCH) |
Roland McGrath | 8433646 | 2009-12-21 16:24:06 -0800 | [diff] [blame] | 192 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
| 194 | # Architecture as present in compile.h |
Thomas Gleixner | 6752ed9 | 2007-10-11 11:11:36 +0200 | [diff] [blame] | 195 | UTS_MACHINE := $(ARCH) |
| 196 | SRCARCH := $(ARCH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Sam Ravnborg | d746d64 | 2007-11-12 20:14:19 +0100 | [diff] [blame] | 198 | # Additional ARCH settings for x86 |
| 199 | ifeq ($(ARCH),i386) |
| 200 | SRCARCH := x86 |
| 201 | endif |
| 202 | ifeq ($(ARCH),x86_64) |
| 203 | SRCARCH := x86 |
| 204 | endif |
Sam Ravnborg | 74b469f | 2007-10-25 19:42:04 +0200 | [diff] [blame] | 205 | |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 206 | # Additional ARCH settings for sparc |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 207 | ifeq ($(ARCH),sparc64) |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 208 | SRCARCH := sparc |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 209 | endif |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 210 | |
Paul Mundt | 3cc000b | 2009-04-11 08:39:27 +0900 | [diff] [blame] | 211 | # Additional ARCH settings for sh |
| 212 | ifeq ($(ARCH),sh64) |
| 213 | SRCARCH := sh |
| 214 | endif |
| 215 | |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 216 | # Where to locate arch specific headers |
| 217 | hdr-arch := $(SRCARCH) |
| 218 | |
Sam Ravnborg | 4914802 | 2009-01-16 21:58:10 +1000 | [diff] [blame] | 219 | ifeq ($(ARCH),m68knommu) |
| 220 | hdr-arch := m68k |
| 221 | endif |
| 222 | |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 223 | KCONFIG_CONFIG ?= .config |
| 224 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | # SHELL used by kbuild |
| 226 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
| 227 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
| 228 | else echo sh; fi ; fi) |
| 229 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 230 | HOSTCC = gcc |
| 231 | HOSTCXX = g++ |
Josh Triplett | 25583d4 | 2009-11-15 14:38:47 -0800 | [diff] [blame] | 232 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 233 | HOSTCXXFLAGS = -O2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 235 | # Decide whether to build built-in, modular, or both. |
| 236 | # Normally, just do built-in. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | KBUILD_MODULES := |
| 239 | KBUILD_BUILTIN := 1 |
| 240 | |
| 241 | # If we have only "make modules", don't compile built-in objects. |
| 242 | # When we're building modules with modversions, we need to consider |
| 243 | # the built-in objects during the descend as well, in order to |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 244 | # make sure the checksums are up to date before we record them. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
| 246 | ifeq ($(MAKECMDGOALS),modules) |
| 247 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
| 248 | endif |
| 249 | |
| 250 | # If we have "make <whatever> modules", compile modules |
| 251 | # in addition to whatever we do anyway. |
| 252 | # Just "make" or "make all" shall build modules as well |
| 253 | |
| 254 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
| 255 | KBUILD_MODULES := 1 |
| 256 | endif |
| 257 | |
| 258 | ifeq ($(MAKECMDGOALS),) |
| 259 | KBUILD_MODULES := 1 |
| 260 | endif |
| 261 | |
Sam Ravnborg | e579d35 | 2005-07-27 08:10:10 +0200 | [diff] [blame] | 262 | export KBUILD_MODULES KBUILD_BUILTIN |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
| 264 | |
| 265 | # Beautify output |
| 266 | # --------------------------------------------------------------------------- |
| 267 | # |
| 268 | # Normally, we echo the whole command before executing it. By making |
| 269 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
| 270 | # $(quiet) to choose other forms of output instead, e.g. |
| 271 | # |
| 272 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
| 273 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
| 274 | # |
| 275 | # If $(quiet) is empty, the whole command will be printed. |
| 276 | # If it is set to "quiet_", only the short version will be printed. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 277 | # If it is set to "silent_", nothing will be printed at all, since |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
| 279 | # |
Adrian Bunk | a58a414 | 2006-01-10 00:08:17 +0100 | [diff] [blame] | 280 | # A simple variant is to prefix commands with $(Q) - that's useful |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | # for commands that shall be hidden in non-verbose mode. |
| 282 | # |
| 283 | # $(Q)ln $@ :< |
| 284 | # |
| 285 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
| 286 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
| 287 | |
| 288 | ifeq ($(KBUILD_VERBOSE),1) |
| 289 | quiet = |
| 290 | Q = |
| 291 | else |
| 292 | quiet=quiet_ |
| 293 | Q = @ |
| 294 | endif |
| 295 | |
| 296 | # If the user is running make -s (silent mode), suppress echoing of |
| 297 | # commands |
| 298 | |
| 299 | ifneq ($(findstring s,$(MAKEFLAGS)),) |
| 300 | quiet=silent_ |
| 301 | endif |
| 302 | |
| 303 | export quiet Q KBUILD_VERBOSE |
| 304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
| 306 | # Look for make include files relative to root of kernel src |
| 307 | MAKEFLAGS += --include-dir=$(srctree) |
| 308 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 309 | # We need some generic definitions (do not try to remake the file). |
| 310 | $(srctree)/scripts/Kbuild.include: ; |
Oleg Verych | 1596486 | 2006-12-10 02:18:40 -0800 | [diff] [blame] | 311 | include $(srctree)/scripts/Kbuild.include |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | # Make variables (CC, etc...) |
| 314 | |
| 315 | AS = $(CROSS_COMPILE)as |
| 316 | LD = $(CROSS_COMPILE)ld |
| 317 | CC = $(CROSS_COMPILE)gcc |
| 318 | CPP = $(CC) -E |
| 319 | AR = $(CROSS_COMPILE)ar |
| 320 | NM = $(CROSS_COMPILE)nm |
| 321 | STRIP = $(CROSS_COMPILE)strip |
| 322 | OBJCOPY = $(CROSS_COMPILE)objcopy |
| 323 | OBJDUMP = $(CROSS_COMPILE)objdump |
| 324 | AWK = awk |
| 325 | GENKSYMS = scripts/genksyms/genksyms |
Sam Ravnborg | caa27b6 | 2009-07-20 21:37:11 +0200 | [diff] [blame] | 326 | INSTALLKERNEL := installkernel |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | DEPMOD = /sbin/depmod |
| 328 | KALLSYMS = scripts/kallsyms |
| 329 | PERL = perl |
| 330 | CHECK = sparse |
| 331 | |
Hannes Eder | 80a7d1d | 2008-12-27 22:38:44 +0100 | [diff] [blame] | 332 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
| 333 | -Wbitwise -Wno-return-void $(CF) |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 334 | CFLAGS_MODULE = |
| 335 | AFLAGS_MODULE = |
| 336 | LDFLAGS_MODULE = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | CFLAGS_KERNEL = |
| 338 | AFLAGS_KERNEL = |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 339 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
| 341 | |
| 342 | # Use LINUXINCLUDE when you must reference the include/ directory. |
| 343 | # Needed to be compatible with the O= option |
Sam Ravnborg | 24a675e | 2009-10-17 21:14:18 +0200 | [diff] [blame] | 344 | LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include -Iinclude \ |
Sam Ravnborg | 96f1304 | 2009-10-17 22:33:27 +0200 | [diff] [blame] | 345 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 346 | -include include/generated/autoconf.h |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 348 | KBUILD_CPPFLAGS := -D__KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 350 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
Dave Jones | 94bed2a | 2007-07-15 23:41:38 -0700 | [diff] [blame] | 351 | -fno-strict-aliasing -fno-common \ |
Floris Kraak | a873582 | 2009-06-15 08:54:02 +0300 | [diff] [blame] | 352 | -Werror-implicit-function-declaration \ |
Eugene Teo | a3ca86a | 2009-07-15 14:59:10 +0800 | [diff] [blame] | 353 | -Wno-format-security \ |
| 354 | -fno-delete-null-pointer-checks |
Sam Ravnborg | 80c00ba | 2010-07-28 19:11:27 +0200 | [diff] [blame] | 355 | KBUILD_AFLAGS_KERNEL := |
| 356 | KBUILD_CFLAGS_KERNEL := |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 357 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 358 | KBUILD_AFLAGS_MODULE := -DMODULE |
| 359 | KBUILD_CFLAGS_MODULE := -DMODULE |
| 360 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 362 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
| 363 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 364 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 365 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 366 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
Sam Ravnborg | 80ef88d | 2007-11-17 15:37:31 +0100 | [diff] [blame] | 367 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
Sam Ravnborg | caa27b6 | 2009-07-20 21:37:11 +0200 | [diff] [blame] | 368 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
| 369 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 370 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
Sam Ravnborg | 06c5040 | 2007-10-15 22:17:25 +0200 | [diff] [blame] | 372 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 373 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 374 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 375 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
Sam Ravnborg | 80c00ba | 2010-07-28 19:11:27 +0200 | [diff] [blame] | 376 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
| 378 | # When compiling out-of-tree modules, put MODVERDIR in the module |
| 379 | # tree rather than in the kernel tree. The kernel tree might |
| 380 | # even be read-only. |
| 381 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
| 382 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | # Files to ignore in find ... statements |
| 384 | |
Trond Myklebust | 406119f | 2005-10-27 14:46:53 -0400 | [diff] [blame] | 385 | RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o |
| 386 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
| 388 | # =========================================================================== |
| 389 | # Rules shared between *config targets and build targets |
| 390 | |
| 391 | # Basic helpers built in scripts/ |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 392 | PHONY += scripts_basic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | scripts_basic: |
| 394 | $(Q)$(MAKE) $(build)=scripts/basic |
Steven Rostedt | 638adb0 | 2009-11-17 10:48:25 -0500 | [diff] [blame] | 395 | $(Q)rm -f .tmp_quiet_recordmcount |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | |
Jan Beulich | cd05e6b | 2005-09-06 11:47:04 +0200 | [diff] [blame] | 397 | # To avoid any implicit rule to kick in, define an empty command. |
| 398 | scripts/basic/%: scripts_basic ; |
| 399 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 400 | PHONY += outputmakefile |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 401 | # outputmakefile generates a Makefile in the output directory, if using a |
| 402 | # separate output directory. This allows convenient use of make in the |
| 403 | # output directory. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | outputmakefile: |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 405 | ifneq ($(KBUILD_SRC),) |
Andi Kleen | 9297999 | 2009-01-10 04:56:13 +0100 | [diff] [blame] | 406 | $(Q)ln -fsn $(srctree) source |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 407 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
| 408 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
| 409 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
| 411 | # To make sure we do not include .config for any of the *config targets |
| 412 | # catch them early, and hand them over to scripts/kconfig/Makefile |
| 413 | # It is allowed to specify more targets when calling make, including |
| 414 | # mixing *config targets and build targets. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 415 | # For example 'make oldconfig all'. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | # Detect when mixed targets is specified, and make a second invocation |
| 417 | # of make so .config is not included in this case either (for *config). |
| 418 | |
Roman Zippel | 3eb3c74 | 2007-01-10 14:45:28 +0100 | [diff] [blame] | 419 | no-dot-config-targets := clean mrproper distclean \ |
Nicolas Palix | 74425ee | 2010-06-06 17:15:01 +0200 | [diff] [blame] | 420 | cscope TAGS tags help %docs check% coccicheck \ |
Roman Zippel | 3eb3c74 | 2007-01-10 14:45:28 +0100 | [diff] [blame] | 421 | include/linux/version.h headers_% \ |
Linus Torvalds | 4aed2fd | 2010-08-06 09:30:52 -0700 | [diff] [blame] | 422 | kernelversion %src-pkg |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | |
| 424 | config-targets := 0 |
| 425 | mixed-targets := 0 |
| 426 | dot-config := 1 |
| 427 | |
| 428 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
| 429 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
| 430 | dot-config := 0 |
| 431 | endif |
| 432 | endif |
| 433 | |
| 434 | ifeq ($(KBUILD_EXTMOD),) |
| 435 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
| 436 | config-targets := 1 |
| 437 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
| 438 | mixed-targets := 1 |
| 439 | endif |
| 440 | endif |
| 441 | endif |
| 442 | |
| 443 | ifeq ($(mixed-targets),1) |
| 444 | # =========================================================================== |
| 445 | # We're called with mixed targets (*config and build targets). |
| 446 | # Handle them one by one. |
| 447 | |
| 448 | %:: FORCE |
| 449 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ |
| 450 | |
| 451 | else |
| 452 | ifeq ($(config-targets),1) |
| 453 | # =========================================================================== |
| 454 | # *config targets only - make sure prerequisites are updated, and descend |
| 455 | # in scripts/kconfig to make the *config target |
| 456 | |
| 457 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
| 458 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
| 459 | # used for 'make defconfig' |
Sam Ravnborg | 74b469f | 2007-10-25 19:42:04 +0200 | [diff] [blame] | 460 | include $(srctree)/arch/$(SRCARCH)/Makefile |
Al Viro | 61bee20 | 2008-08-25 04:51:27 -0400 | [diff] [blame] | 461 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 463 | config: scripts_basic outputmakefile FORCE |
| 464 | $(Q)mkdir -p include/linux include/config |
| 465 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 466 | |
| 467 | %config: scripts_basic outputmakefile FORCE |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 468 | $(Q)mkdir -p include/linux include/config |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 470 | |
| 471 | else |
| 472 | # =========================================================================== |
| 473 | # Build targets only - this includes vmlinux, arch specific targets, clean |
| 474 | # targets and others. In general all targets except *config targets. |
| 475 | |
| 476 | ifeq ($(KBUILD_EXTMOD),) |
| 477 | # Additional helpers built in scripts/ |
| 478 | # Carefully list dependencies so we do not try to build scripts twice |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 479 | # in parallel |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 480 | PHONY += scripts |
Michal Marek | bc081dd | 2009-12-07 16:38:33 +0100 | [diff] [blame] | 481 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | $(Q)$(MAKE) $(build)=$(@) |
| 483 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | # Objects we will link into vmlinux / subdirs we need to visit |
| 485 | init-y := init/ |
David Woodhouse | 4d2acfb | 2008-05-23 13:58:12 +0100 | [diff] [blame] | 486 | drivers-y := drivers/ sound/ firmware/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | net-y := net/ |
| 488 | libs-y := lib/ |
| 489 | core-y := usr/ |
| 490 | endif # KBUILD_EXTMOD |
| 491 | |
| 492 | ifeq ($(dot-config),1) |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 493 | # Read in config |
| 494 | -include include/config/auto.conf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 496 | ifeq ($(KBUILD_EXTMOD),) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | # Read in dependencies to all Kconfig* files, make sure to run |
| 498 | # oldconfig if changes are detected. |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 499 | -include include/config/auto.conf.cmd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | # To avoid any implicit rule to kick in, define an empty command |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 502 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 504 | # If .config is newer than include/config/auto.conf, someone tinkered |
Sam Ravnborg | 752625c | 2005-12-26 23:34:03 +0100 | [diff] [blame] | 505 | # with it and forgot to run make oldconfig. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 506 | # 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] | 507 | # 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] | 508 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
| 510 | else |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 511 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 512 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
| 513 | PHONY += include/config/auto.conf |
| 514 | |
| 515 | include/config/auto.conf: |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 516 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 517 | echo; \ |
| 518 | echo " ERROR: Kernel configuration is invalid."; \ |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 519 | echo " include/generated/autoconf.h or $@ are missing.";\ |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 520 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
| 521 | echo; \ |
| 522 | /bin/false) |
| 523 | |
| 524 | endif # KBUILD_EXTMOD |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 525 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | else |
| 527 | # Dummy target needed, because used as prerequisite |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 528 | include/config/auto.conf: ; |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 529 | endif # $(dot-config) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
| 531 | # The all: target is the default when no target is given on the |
| 532 | # command line. |
| 533 | # 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] | 534 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | all: vmlinux |
| 536 | |
| 537 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 538 | KBUILD_CFLAGS += -Os |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | else |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 540 | KBUILD_CFLAGS += -O2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | endif |
| 542 | |
Ralf Baechle | bef5b54 | 2008-07-16 13:02:24 +0100 | [diff] [blame] | 543 | include $(srctree)/arch/$(SRCARCH)/Makefile |
| 544 | |
Mike Frysinger | 08f6746 | 2009-06-04 16:29:08 -0700 | [diff] [blame] | 545 | ifneq ($(CONFIG_FRAME_WARN),0) |
Andi Kleen | 35bb5b1 | 2008-02-22 15:15:03 +0100 | [diff] [blame] | 546 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
| 547 | endif |
| 548 | |
Sam Ravnborg | e06b8b9 | 2008-02-13 22:43:28 +0100 | [diff] [blame] | 549 | # Force gcc to behave correct even for buggy distributions |
Tejun Heo | 5d707e9 | 2009-02-09 22:17:39 +0900 | [diff] [blame] | 550 | ifndef CONFIG_CC_STACKPROTECTOR |
Sam Ravnborg | e06b8b9 | 2008-02-13 22:43:28 +0100 | [diff] [blame] | 551 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
Tejun Heo | 5d707e9 | 2009-02-09 22:17:39 +0900 | [diff] [blame] | 552 | endif |
Sam Ravnborg | e06b8b9 | 2008-02-13 22:43:28 +0100 | [diff] [blame] | 553 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | ifdef CONFIG_FRAME_POINTER |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 555 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | else |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 557 | KBUILD_CFLAGS += -fomit-frame-pointer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | endif |
| 559 | |
| 560 | ifdef CONFIG_DEBUG_INFO |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 561 | KBUILD_CFLAGS += -g |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 562 | KBUILD_AFLAGS += -gdwarf-2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | endif |
| 564 | |
Andi Kleen | d6f4ceb | 2010-07-14 15:43:52 +0200 | [diff] [blame] | 565 | ifdef CONFIG_DEBUG_INFO_REDUCED |
| 566 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) |
| 567 | endif |
| 568 | |
Steven Rostedt | 606576c | 2008-10-06 19:06:12 -0400 | [diff] [blame] | 569 | ifdef CONFIG_FUNCTION_TRACER |
Arnaldo Carvalho de Melo | 16444a8 | 2008-05-12 21:20:42 +0200 | [diff] [blame] | 570 | KBUILD_CFLAGS += -pg |
| 571 | endif |
| 572 | |
Sam Ravnborg | 91341d4 | 2008-01-21 21:31:44 +0100 | [diff] [blame] | 573 | # We trigger additional mismatches with less inlining |
| 574 | ifdef CONFIG_DEBUG_SECTION_MISMATCH |
| 575 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) |
| 576 | endif |
| 577 | |
Sam Ravnborg | e8e6993 | 2005-04-30 16:51:42 -0700 | [diff] [blame] | 578 | # arch Makefile may override CC so keep this after arch Makefile is included |
Rik van Riel | e8f5bdb | 2005-05-16 21:53:46 -0700 | [diff] [blame] | 579 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
Sam Ravnborg | e8e6993 | 2005-04-30 16:51:42 -0700 | [diff] [blame] | 580 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
| 581 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | # warn about C99 declaration after statement |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 583 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 585 | # disable pointer signed / unsigned warnings in gcc 4.0 |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 586 | KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | |
Kirill Smelkov | fe8d0a4 | 2009-04-09 15:34:34 +0400 | [diff] [blame] | 588 | # disable invalid "can't wrap" optimizations for signed / pointers |
Linus Torvalds | a137802 | 2009-07-12 11:25:04 -0700 | [diff] [blame] | 589 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
Linus Torvalds | d011555 | 2009-03-19 15:53:19 -0700 | [diff] [blame] | 590 | |
Andi Kleen | 8f7f5c9 | 2009-09-18 12:49:37 -0700 | [diff] [blame] | 591 | # conserve stack if available |
| 592 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
| 593 | |
Sam Ravnborg | 06c5040 | 2007-10-15 22:17:25 +0200 | [diff] [blame] | 594 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
Sam Ravnborg | 69ee0b3 | 2007-11-04 19:00:46 +0100 | [diff] [blame] | 595 | # But warn user when we do so |
| 596 | warn-assign = \ |
| 597 | $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") |
| 598 | |
| 599 | ifneq ($(KCPPFLAGS),) |
| 600 | $(call warn-assign,CPPFLAGS) |
| 601 | KBUILD_CPPFLAGS += $(KCPPFLAGS) |
| 602 | endif |
| 603 | ifneq ($(KAFLAGS),) |
| 604 | $(call warn-assign,AFLAGS) |
| 605 | KBUILD_AFLAGS += $(KAFLAGS) |
| 606 | endif |
| 607 | ifneq ($(KCFLAGS),) |
| 608 | $(call warn-assign,CFLAGS) |
| 609 | KBUILD_CFLAGS += $(KCFLAGS) |
| 610 | endif |
Sam Ravnborg | 52bcc33 | 2007-10-15 22:03:58 +0200 | [diff] [blame] | 611 | |
Roland McGrath | 1899119 | 2007-07-19 01:48:40 -0700 | [diff] [blame] | 612 | # Use --build-id when available. |
| 613 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |
Sam Ravnborg | f86fd30 | 2009-09-19 10:14:33 +0200 | [diff] [blame] | 614 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
Sam Ravnborg | 6588169 | 2010-07-28 17:33:09 +0200 | [diff] [blame] | 615 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
Roland McGrath | 1899119 | 2007-07-19 01:48:40 -0700 | [diff] [blame] | 616 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
| 617 | |
David Howells | 5d7d18f | 2009-03-04 11:59:07 -0800 | [diff] [blame] | 618 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
Andi Kleen | d79a271 | 2009-09-16 22:36:55 +0200 | [diff] [blame] | 619 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
David Howells | 5d7d18f | 2009-03-04 11:59:07 -0800 | [diff] [blame] | 620 | endif |
| 621 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | # Default kernel image to build when no specific target is given. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 623 | # KBUILD_IMAGE may be overruled on the command line or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | # set in the environment |
| 625 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
| 626 | # this default value |
| 627 | export KBUILD_IMAGE ?= vmlinux |
| 628 | |
| 629 | # |
| 630 | # INSTALL_PATH specifies where to place the updated kernel and system map |
| 631 | # images. Default is /boot, but you can set it to other values |
| 632 | export INSTALL_PATH ?= /boot |
| 633 | |
| 634 | # |
| 635 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
| 636 | # relocations required by build roots. This is not defined in the |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 637 | # makefile but the argument can be passed to make if needed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | # |
| 639 | |
Sam Ravnborg | df9df03 | 2006-01-16 12:46:07 +0100 | [diff] [blame] | 640 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | export MODLIB |
| 642 | |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 643 | # |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 644 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
| 645 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then |
| 646 | # the default option --strip-debug will be used. Otherwise, |
| 647 | # INSTALL_MOD_STRIP will used as the options to the strip command. |
| 648 | |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 649 | ifdef INSTALL_MOD_STRIP |
| 650 | ifeq ($(INSTALL_MOD_STRIP),1) |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 651 | mod_strip_cmd = $(STRIP) --strip-debug |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 652 | else |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 653 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 654 | endif # INSTALL_MOD_STRIP=1 |
| 655 | else |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 656 | mod_strip_cmd = true |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 657 | endif # INSTALL_MOD_STRIP |
| 658 | export mod_strip_cmd |
| 659 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | |
| 661 | ifeq ($(KBUILD_EXTMOD),) |
Jens Axboe | 3a65dfe | 2005-11-04 08:43:35 +0100 | [diff] [blame] | 662 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | |
| 664 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
| 665 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
| 666 | $(net-y) $(net-m) $(libs-y) $(libs-m))) |
| 667 | |
| 668 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
| 669 | $(init-n) $(init-) \ |
| 670 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ |
| 671 | $(net-n) $(net-) $(libs-n) $(libs-)))) |
| 672 | |
| 673 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
| 674 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
| 675 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
| 676 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
| 677 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
| 678 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
| 679 | libs-y := $(libs-y1) $(libs-y2) |
| 680 | |
| 681 | # Build vmlinux |
| 682 | # --------------------------------------------------------------------------- |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 683 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
Uwe Zeisberger | 2462566 | 2006-10-05 16:24:45 +0200 | [diff] [blame] | 685 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
| 687 | # |
| 688 | # vmlinux |
| 689 | # ^ |
| 690 | # | |
| 691 | # +-< $(vmlinux-init) |
| 692 | # | +--< init/version.o + more |
| 693 | # | |
| 694 | # +--< $(vmlinux-main) |
| 695 | # | +--< driver/built-in.o mm/built-in.o + more |
| 696 | # | |
| 697 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) |
| 698 | # |
| 699 | # vmlinux version (uname -v) cannot be updated during normal |
| 700 | # descending-into-subdirs phase since we do not yet know if we need to |
| 701 | # update vmlinux. |
| 702 | # Therefore this step is delayed until just before final link of vmlinux - |
| 703 | # except in the kallsyms case where it is done just before adding the |
| 704 | # symbols to the kernel. |
| 705 | # |
| 706 | # System.map is generated to document addresses of all kernel symbols |
| 707 | |
| 708 | vmlinux-init := $(head-y) $(init-y) |
| 709 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) |
| 710 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) |
Thomas Gleixner | 6752ed9 | 2007-10-11 11:11:36 +0200 | [diff] [blame] | 711 | vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds |
Sam Ravnborg | 85bd2fd | 2007-02-26 15:33:52 +0100 | [diff] [blame] | 712 | export KBUILD_VMLINUX_OBJS := $(vmlinux-all) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
| 714 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS |
| 715 | # May be overridden by arch/$(ARCH)/Makefile |
| 716 | quiet_cmd_vmlinux__ ?= LD $@ |
| 717 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ |
| 718 | -T $(vmlinux-lds) $(vmlinux-init) \ |
| 719 | --start-group $(vmlinux-main) --end-group \ |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 720 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
| 722 | # Generate new vmlinux version |
| 723 | quiet_cmd_vmlinux_version = GEN .version |
| 724 | cmd_vmlinux_version = set -e; \ |
Jan Beulich | 4e25d8b | 2005-09-08 17:07:35 +0200 | [diff] [blame] | 725 | if [ ! -r .version ]; then \ |
| 726 | rm -f .version; \ |
| 727 | echo 1 >.version; \ |
| 728 | else \ |
| 729 | mv .version .old_version; \ |
| 730 | expr 0$$(cat .old_version) + 1 >.version; \ |
| 731 | fi; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | $(MAKE) $(build)=init |
| 733 | |
| 734 | # Generate System.map |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 735 | quiet_cmd_sysmap = SYSMAP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
| 737 | |
| 738 | # Link of vmlinux |
| 739 | # If CONFIG_KALLSYMS is set .version is already updated |
| 740 | # Generate System.map and verify that the content is consistent |
Mark Rustad | 39ca371 | 2005-10-17 16:43:34 -0700 | [diff] [blame] | 741 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
| 742 | # First command is ':' to allow us to use + in front of the rule |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | define rule_vmlinux__ |
Mark Rustad | 39ca371 | 2005-10-17 16:43:34 -0700 | [diff] [blame] | 744 | : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
| 746 | |
| 747 | $(call cmd,vmlinux__) |
| 748 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
| 749 | |
Sam Ravnborg | 4635281 | 2006-08-08 21:41:18 +0200 | [diff] [blame] | 750 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
| 751 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ |
| 752 | $(cmd_sysmap) $@ System.map; \ |
| 753 | if [ $$? -ne 0 ]; then \ |
| 754 | rm -f $@; \ |
| 755 | /bin/false; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | fi; |
| 757 | $(verify_kallsyms) |
| 758 | endef |
| 759 | |
| 760 | |
| 761 | ifdef CONFIG_KALLSYMS |
| 762 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) |
| 763 | # It's a three stage process: |
| 764 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is |
| 765 | # empty |
| 766 | # Running kallsyms on that gives us .tmp_kallsyms1.o with |
| 767 | # the right size - vmlinux version (uname -v) is updated during this step |
| 768 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, |
| 769 | # but due to the added section, some addresses have shifted. |
| 770 | # From here, we generate a correct .tmp_kallsyms2.o |
| 771 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. |
| 772 | # o Verify that the System.map from vmlinux matches the map from |
| 773 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. |
| 774 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using |
| 775 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a |
| 776 | # temporary bypass to allow the kernel to be built while the |
| 777 | # maintainers work out what went wrong with kallsyms. |
| 778 | |
| 779 | ifdef CONFIG_KALLSYMS_EXTRA_PASS |
| 780 | last_kallsyms := 3 |
| 781 | else |
| 782 | last_kallsyms := 2 |
| 783 | endif |
| 784 | |
| 785 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o |
| 786 | |
| 787 | define verify_kallsyms |
Sam Ravnborg | 4635281 | 2006-08-08 21:41:18 +0200 | [diff] [blame] | 788 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
| 789 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
Sam Ravnborg | 4635281 | 2006-08-08 21:41:18 +0200 | [diff] [blame] | 791 | $(Q)cmp -s System.map .tmp_System.map || \ |
| 792 | (echo Inconsistent kallsyms data; \ |
| 793 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | rm .tmp_kallsyms* ; /bin/false ) |
| 795 | endef |
| 796 | |
| 797 | # Update vmlinux version before link |
| 798 | # Use + in front of this rule to silent warning about make -j1 |
Sam Ravnborg | 72ba47c | 2005-07-27 11:39:37 +0200 | [diff] [blame] | 799 | # First command is ':' to allow us to use + in front of this rule |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | cmd_ksym_ld = $(cmd_vmlinux__) |
| 801 | define rule_ksym_ld |
Sam Ravnborg | 72ba47c | 2005-07-27 11:39:37 +0200 | [diff] [blame] | 802 | : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | +$(call cmd,vmlinux_version) |
| 804 | $(call cmd,vmlinux__) |
| 805 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
| 806 | endef |
| 807 | |
| 808 | # Generate .S file with all kernel symbols |
| 809 | quiet_cmd_kallsyms = KSYM $@ |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 810 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ |
| 811 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 813 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | $(call if_changed_dep,as_o_S) |
| 815 | |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 816 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | $(call cmd,kallsyms) |
| 818 | |
| 819 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 820 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE |
| 821 | $(call if_changed_rule,ksym_ld) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 823 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE |
| 824 | $(call if_changed,vmlinux__) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 826 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE |
| 827 | $(call if_changed,vmlinux__) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | |
| 829 | # Needs to visit scripts/ before $(KALLSYMS) can be used. |
| 830 | $(KALLSYMS): scripts ; |
| 831 | |
Sam Ravnborg | 33bc25e | 2005-07-14 20:19:08 +0000 | [diff] [blame] | 832 | # Generate some data for debugging strange kallsyms problems |
| 833 | debug_kallsyms: .tmp_map$(last_kallsyms) |
| 834 | |
| 835 | .tmp_map%: .tmp_vmlinux% FORCE |
| 836 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ |
| 837 | |
| 838 | .tmp_map3: .tmp_map2 |
| 839 | |
| 840 | .tmp_map2: .tmp_map1 |
| 841 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | endif # ifdef CONFIG_KALLSYMS |
| 843 | |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 844 | # Do modpost on a prelinked vmlinux. The finally linked vmlinux has |
| 845 | # relevant sections renamed as per the linker script. |
| 846 | quiet_cmd_vmlinux-modpost = LD $@ |
| 847 | cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ |
| 848 | $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ |
Sam Ravnborg | 90ebd87 | 2008-05-01 19:31:35 +0200 | [diff] [blame] | 849 | $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 850 | define rule_vmlinux-modpost |
| 851 | : |
| 852 | +$(call cmd,vmlinux-modpost) |
| 853 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ |
| 854 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd |
| 855 | endef |
| 856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | # vmlinux image - including updated kernel symbols |
Sam Ravnborg | 310f824 | 2008-01-21 22:57:09 +0100 | [diff] [blame] | 858 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE |
David Woodhouse | 0f836e5 | 2006-10-11 01:21:43 -0700 | [diff] [blame] | 859 | ifdef CONFIG_HEADERS_CHECK |
David Woodhouse | 0e7af8d04 | 2006-10-13 16:04:23 +0100 | [diff] [blame] | 860 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
David Woodhouse | 0f836e5 | 2006-10-11 01:21:43 -0700 | [diff] [blame] | 861 | endif |
Mathieu Desnoyers | 267c402 | 2007-10-18 23:41:07 -0700 | [diff] [blame] | 862 | ifdef CONFIG_SAMPLES |
| 863 | $(Q)$(MAKE) $(build)=samples |
| 864 | endif |
Randy Dunlap | 3794f3e | 2008-08-12 15:09:06 -0700 | [diff] [blame] | 865 | ifdef CONFIG_BUILD_DOCSRC |
| 866 | $(Q)$(MAKE) $(build)=Documentation |
| 867 | endif |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 868 | $(call vmlinux-modpost) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | $(call if_changed_rule,vmlinux__) |
Jan Beulich | 4e25d8b | 2005-09-08 17:07:35 +0200 | [diff] [blame] | 870 | $(Q)rm -f .old_version |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Sam Ravnborg | 310f824 | 2008-01-21 22:57:09 +0100 | [diff] [blame] | 872 | # build vmlinux.o first to catch section mismatch errors early |
Sam Ravnborg | cf87dcd | 2008-02-13 22:50:24 +0100 | [diff] [blame] | 873 | ifdef CONFIG_KALLSYMS |
| 874 | .tmp_vmlinux1: vmlinux.o |
| 875 | endif |
Sam Ravnborg | 90ebd87 | 2008-05-01 19:31:35 +0200 | [diff] [blame] | 876 | |
| 877 | modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) |
| 878 | vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 879 | $(call if_changed_rule,vmlinux-modpost) |
| 880 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | # The actual objects are generated when descending, |
| 882 | # make sure no implicit rule kicks in |
| 883 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; |
| 884 | |
| 885 | # Handle descending into subdirectories listed in $(vmlinux-dirs) |
| 886 | # Preset locale variables to speed up the build process. Limit locale |
| 887 | # tweaks to this spot to avoid wrong language settings when running |
| 888 | # make menuconfig etc. |
| 889 | # Error messages still appears in the original language |
| 890 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 891 | PHONY += $(vmlinux-dirs) |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 892 | $(vmlinux-dirs): prepare scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | $(Q)$(MAKE) $(build)=$@ |
| 894 | |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 895 | # Store (new) KERNELRELASE string in include/config/kernel.release |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 896 | include/config/kernel.release: include/config/auto.conf FORCE |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 897 | $(Q)rm -f $@ |
Michal Marek | 7263e71 | 2010-07-05 23:43:04 +0200 | [diff] [blame] | 898 | $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@ |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 899 | |
| 900 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | # Things we need to do before we recursively start building the kernel |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 902 | # or the modules are listed in "prepare". |
| 903 | # A multi level approach is used. prepareN is processed before prepareN-1. |
| 904 | # archprepare is used in arch Makefiles and when processed asm symlink, |
| 905 | # version.h and scripts_basic is processed / created. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 907 | # Listed in dependency order |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 908 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 909 | |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 910 | # 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] | 911 | # and if so do: |
| 912 | # 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] | 913 | prepare3: include/config/kernel.release |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | ifneq ($(KBUILD_SRC),) |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 915 | @$(kecho) ' Using $(srctree) as source for kernel' |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 916 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
| 918 | echo " in the '$(srctree)' directory.";\ |
| 919 | /bin/false; \ |
| 920 | fi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | endif |
| 922 | |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 923 | # prepare2 creates a makefile if using a separate output directory |
| 924 | prepare2: prepare3 outputmakefile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | |
Sam Ravnborg | 273b281 | 2009-10-18 00:52:28 +0200 | [diff] [blame] | 926 | prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \ |
Sam Ravnborg | f7f16b7 | 2009-10-18 00:00:43 +0200 | [diff] [blame] | 927 | include/config/auto.conf |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 928 | $(cmd_crmodverdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 930 | archprepare: prepare1 scripts_basic |
| 931 | |
| 932 | prepare0: archprepare FORCE |
Sam Ravnborg | 8d36a62 | 2005-09-10 21:05:36 +0200 | [diff] [blame] | 933 | $(Q)$(MAKE) $(build)=. |
Sam Ravnborg | c53aeca | 2007-03-27 22:50:29 +0200 | [diff] [blame] | 934 | $(Q)$(MAKE) $(build)=. missing-syscalls |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 935 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | # All the preparing.. |
Robert P. J. Day | d395efb | 2007-02-14 00:33:01 -0800 | [diff] [blame] | 937 | prepare: prepare0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | # Generate some files |
| 940 | # --------------------------------------------------------------------------- |
| 941 | |
| 942 | # KERNELRELEASE can change from a few different places, meaning version.h |
| 943 | # needs to be updated, so this check is forced on all builds |
| 944 | |
| 945 | uts_len := 64 |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 946 | define filechk_utsrelease.h |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 948 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
| 949 | exit 1; \ |
| 950 | fi; \ |
| 951 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | endef |
| 953 | |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 954 | define filechk_version.h |
| 955 | (echo \#define LINUX_VERSION_CODE $(shell \ |
| 956 | expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ |
| 957 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
| 958 | endef |
| 959 | |
| 960 | include/linux/version.h: $(srctree)/Makefile FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | $(call filechk,version.h) |
| 962 | |
Sam Ravnborg | 273b281 | 2009-10-18 00:52:28 +0200 | [diff] [blame] | 963 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 964 | $(call filechk,utsrelease.h) |
| 965 | |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 966 | PHONY += headerdep |
| 967 | headerdep: |
| 968 | $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl |
| 969 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | # --------------------------------------------------------------------------- |
| 971 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 972 | PHONY += depend dep |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | depend dep: |
| 974 | @echo '*** Warning: make $@ is unnecessary now.' |
| 975 | |
| 976 | # --------------------------------------------------------------------------- |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 977 | # Firmware install |
| 978 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware |
| 979 | export INSTALL_FW_PATH |
| 980 | |
| 981 | PHONY += firmware_install |
| 982 | firmware_install: FORCE |
| 983 | @mkdir -p $(objtree)/firmware |
| 984 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install |
| 985 | |
| 986 | # --------------------------------------------------------------------------- |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 987 | # Kernel headers |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 988 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 989 | #Default location for installed headers |
| 990 | export INSTALL_HDR_PATH = $(objtree)/usr |
| 991 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 992 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 993 | |
| 994 | # If we do an all arch process set dst to asm-$(hdr-arch) |
| 995 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 996 | |
| 997 | PHONY += __headers |
| 998 | __headers: include/linux/version.h scripts_basic FORCE |
| 999 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
David Woodhouse | 6d71627 | 2006-09-24 22:16:03 +0100 | [diff] [blame] | 1000 | |
| 1001 | PHONY += headers_install_all |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1002 | headers_install_all: |
| 1003 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
David Woodhouse | 6d71627 | 2006-09-24 22:16:03 +0100 | [diff] [blame] | 1004 | |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1005 | PHONY += headers_install |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 1006 | headers_install: __headers |
Sam Ravnborg | c95fa08 | 2009-10-17 22:47:31 +0200 | [diff] [blame] | 1007 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \ |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1008 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
Sam Ravnborg | 88181ec | 2008-06-09 21:24:28 +0200 | [diff] [blame] | 1009 | $(Q)$(MAKE) $(hdr-inst)=include |
Sam Ravnborg | c95fa08 | 2009-10-17 22:47:31 +0200 | [diff] [blame] | 1010 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1011 | |
Mike Frysinger | 1f85712 | 2007-02-14 00:33:02 -0800 | [diff] [blame] | 1012 | PHONY += headers_check_all |
| 1013 | headers_check_all: headers_install_all |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1014 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
Mike Frysinger | 1f85712 | 2007-02-14 00:33:02 -0800 | [diff] [blame] | 1015 | |
David Woodhouse | 6847535 | 2006-06-18 12:02:10 +0100 | [diff] [blame] | 1016 | PHONY += headers_check |
| 1017 | headers_check: headers_install |
Sam Ravnborg | 88181ec | 2008-06-09 21:24:28 +0200 | [diff] [blame] | 1018 | $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 |
Sam Ravnborg | c95fa08 | 2009-10-17 22:47:31 +0200 | [diff] [blame] | 1019 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1 |
David Woodhouse | 6847535 | 2006-06-18 12:02:10 +0100 | [diff] [blame] | 1020 | |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1021 | # --------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | # Modules |
| 1023 | |
| 1024 | ifdef CONFIG_MODULES |
| 1025 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1026 | # By default, build modules as well |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | |
Michal Marek | 73d1393 | 2010-03-10 12:28:58 +0100 | [diff] [blame] | 1028 | all: modules |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | |
| 1030 | # Build modules |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1031 | # |
| 1032 | # A module can be listed more than once in obj-m resulting in |
| 1033 | # duplicate lines in modules.order files. Those are removed |
| 1034 | # using awk while concatenating to the final file. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1036 | PHONY += modules |
Michal Marek | 2da30e7 | 2010-06-07 22:22:12 +0200 | [diff] [blame] | 1037 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1038 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1039 | @$(kecho) ' Building modules, stage 2.'; |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1040 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
David Woodhouse | 44463f7 | 2008-07-25 14:17:19 -0400 | [diff] [blame] | 1041 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | |
Michal Marek | a6c3663 | 2010-03-08 10:07:12 +0100 | [diff] [blame] | 1043 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
| 1044 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin |
| 1045 | |
Michal Marek | 73d1393 | 2010-03-10 12:28:58 +0100 | [diff] [blame] | 1046 | %/modules.builtin: include/config/auto.conf |
Michal Marek | a6c3663 | 2010-03-08 10:07:12 +0100 | [diff] [blame] | 1047 | $(Q)$(MAKE) $(modbuiltin)=$* |
| 1048 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | |
| 1050 | # Target to prepare building external modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1051 | PHONY += modules_prepare |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1052 | modules_prepare: prepare scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | |
| 1054 | # Target to install modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1055 | PHONY += modules_install |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | modules_install: _modinst_ _modinst_post |
| 1057 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1058 | PHONY += _modinst_ |
Michal Marek | 2da30e7 | 2010-06-07 22:22:12 +0200 | [diff] [blame] | 1059 | _modinst_: |
Tom Rini | ce454d4 | 2005-07-15 07:56:36 -0700 | [diff] [blame] | 1060 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | echo "Warning: you may need to install module-init-tools"; \ |
| 1062 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ |
| 1063 | sleep 1; \ |
| 1064 | fi |
| 1065 | @rm -rf $(MODLIB)/kernel |
| 1066 | @rm -f $(MODLIB)/source |
| 1067 | @mkdir -p $(MODLIB)/kernel |
| 1068 | @ln -s $(srctree) $(MODLIB)/source |
| 1069 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
| 1070 | rm -f $(MODLIB)/build ; \ |
| 1071 | ln -s $(objtree) $(MODLIB)/build ; \ |
| 1072 | fi |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1073 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
Michal Marek | bc081dd | 2009-12-07 16:38:33 +0100 | [diff] [blame] | 1074 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1075 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1077 | # This depmod is only for convenience to give the initial |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | # boot a modules.dep even before / is mounted read-write. However the |
| 1079 | # boot script depmod is the master version. |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1080 | PHONY += _modinst_post |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | _modinst_post: _modinst_ |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 1082 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1083 | $(call cmd,depmod) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | |
| 1085 | else # CONFIG_MODULES |
| 1086 | |
| 1087 | # Modules not configured |
| 1088 | # --------------------------------------------------------------------------- |
| 1089 | |
| 1090 | modules modules_install: FORCE |
| 1091 | @echo |
| 1092 | @echo "The present kernel configuration has modules disabled." |
| 1093 | @echo "Type 'make config' and enable loadable module support." |
| 1094 | @echo "Then build a kernel with module support enabled." |
| 1095 | @echo |
| 1096 | @exit 1 |
| 1097 | |
| 1098 | endif # CONFIG_MODULES |
| 1099 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | ### |
| 1101 | # Cleaning is done on three levels. |
| 1102 | # make clean Delete most generated files |
| 1103 | # Leave enough to build external modules |
| 1104 | # make mrproper Delete the current configuration, and all generated files |
| 1105 | # make distclean Remove editor backup files, patch leftover files and the like |
| 1106 | |
| 1107 | # Directories & files removed with 'make clean' |
| 1108 | CLEAN_DIRS += $(MODVERDIR) |
| 1109 | CLEAN_FILES += vmlinux System.map \ |
| 1110 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map |
| 1111 | |
| 1112 | # Directories & files removed with 'make mrproper' |
Sam Ravnborg | 96f1304 | 2009-10-17 22:33:27 +0200 | [diff] [blame] | 1113 | MRPROPER_DIRS += include/config usr/include include/generated |
Sam Ravnborg | f7f16b7 | 2009-10-18 00:00:43 +0200 | [diff] [blame] | 1114 | MRPROPER_FILES += .config .config.old .version .old_version \ |
Sam Ravnborg | 264a268 | 2009-10-18 00:49:24 +0200 | [diff] [blame] | 1115 | include/linux/version.h \ |
Wenji Huang | 8723eae | 2009-11-19 08:44:32 +0800 | [diff] [blame] | 1116 | Module.symvers tags TAGS cscope* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | |
| 1118 | # clean - Delete most, but leave enough to build external modules |
| 1119 | # |
| 1120 | clean: rm-dirs := $(CLEAN_DIRS) |
| 1121 | clean: rm-files := $(CLEAN_FILES) |
Randy Dunlap | 3794f3e | 2008-08-12 15:09:06 -0700 | [diff] [blame] | 1122 | clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1124 | PHONY += $(clean-dirs) clean archclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | $(clean-dirs): |
| 1126 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| 1127 | |
| 1128 | clean: archclean $(clean-dirs) |
| 1129 | $(call cmd,rmdirs) |
| 1130 | $(call cmd,rmfiles) |
| 1131 | @find . $(RCS_FIND_IGNORE) \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1132 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 1133 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
Mathieu Desnoyers | d35cb36 | 2008-07-21 14:21:38 -0700 | [diff] [blame] | 1134 | -o -name '*.symtypes' -o -name 'modules.order' \ |
Michal Marek | d9bdcc7 | 2009-12-08 16:03:10 +0100 | [diff] [blame] | 1135 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 1136 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | |
| 1138 | # mrproper - Delete all generated files, including .config |
| 1139 | # |
| 1140 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
| 1141 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
| 1142 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
| 1143 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1144 | PHONY += $(mrproper-dirs) mrproper archmrproper |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | $(mrproper-dirs): |
| 1146 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
| 1147 | |
| 1148 | mrproper: clean archmrproper $(mrproper-dirs) |
| 1149 | $(call cmd,rmdirs) |
| 1150 | $(call cmd,rmfiles) |
| 1151 | |
| 1152 | # distclean |
| 1153 | # |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1154 | PHONY += distclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | |
| 1156 | distclean: mrproper |
| 1157 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1158 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1160 | -o -name '.*.rej' -o -size 0 \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
| 1162 | -type f -print | xargs rm -f |
| 1163 | |
| 1164 | |
| 1165 | # Packaging of the kernel to various formats |
| 1166 | # --------------------------------------------------------------------------- |
| 1167 | # rpm target kept for backward compatibility |
| 1168 | package-dir := $(srctree)/scripts/package |
| 1169 | |
Arnaldo Carvalho de Melo | bafb674 | 2010-06-07 07:44:25 -0300 | [diff] [blame] | 1170 | %src-pkg: FORCE |
| 1171 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Zach Brown | 031ecc6 | 2006-06-08 22:12:37 -0700 | [diff] [blame] | 1172 | %pkg: include/config/kernel.release FORCE |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1173 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Zach Brown | 031ecc6 | 2006-06-08 22:12:37 -0700 | [diff] [blame] | 1174 | rpm: include/config/kernel.release FORCE |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1175 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | |
| 1177 | |
| 1178 | # Brief documentation of the typical targets used |
| 1179 | # --------------------------------------------------------------------------- |
| 1180 | |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1181 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | boards := $(notdir $(boards)) |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1183 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
| 1184 | board-dirs := $(sort $(notdir $(board-dirs:/=))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | |
| 1186 | help: |
| 1187 | @echo 'Cleaning targets:' |
Samuel Tardieu | 5ea084e | 2006-12-12 19:09:40 +0100 | [diff] [blame] | 1188 | @echo ' clean - Remove most generated files but keep the config and' |
Jesper Juhl | 5cc8d24 | 2006-09-24 14:01:08 +0200 | [diff] [blame] | 1189 | @echo ' enough build support to build external modules' |
Samuel Tardieu | 5ea084e | 2006-12-12 19:09:40 +0100 | [diff] [blame] | 1190 | @echo ' mrproper - Remove all generated files + config + various backup files' |
Jesper Juhl | 5cc8d24 | 2006-09-24 14:01:08 +0200 | [diff] [blame] | 1191 | @echo ' distclean - mrproper + remove editor backup and patch files' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | @echo '' |
| 1193 | @echo 'Configuration targets:' |
| 1194 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
| 1195 | @echo '' |
| 1196 | @echo 'Other generic targets:' |
| 1197 | @echo ' all - Build all targets marked with [*]' |
| 1198 | @echo '* vmlinux - Build the bare kernel' |
| 1199 | @echo '* modules - Build all modules' |
Bodo Eggert | 9cc5d74 | 2005-11-23 20:11:34 +0100 | [diff] [blame] | 1200 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 1201 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
| 1202 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | @echo ' dir/ - Build all files in dir and below' |
Joe Perches | 6271897 | 2010-01-13 09:31:44 -0800 | [diff] [blame] | 1204 | @echo ' dir/file.[oisS] - Build specified target only' |
| 1205 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' |
| 1206 | @echo ' (requires a recent binutils and recent build (System.map))' |
Sam Ravnborg | 155ad60 | 2005-07-07 17:56:08 -0700 | [diff] [blame] | 1207 | @echo ' dir/file.ko - Build module including final link' |
Robert P. J. Day | c4d5ee6 | 2009-04-24 12:35:23 -0400 | [diff] [blame] | 1208 | @echo ' modules_prepare - Set up for building external modules' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | @echo ' tags/TAGS - Generate tags file for editors' |
| 1210 | @echo ' cscope - Generate cscope index' |
Zach Brown | 6d12884 | 2005-09-07 12:08:23 -0700 | [diff] [blame] | 1211 | @echo ' kernelrelease - Output the release version string' |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 1212 | @echo ' kernelversion - Output the version stored in Makefile' |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1213 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
Geert Uytterhoeven | 59df323 | 2007-01-29 13:47:01 +0100 | [diff] [blame] | 1214 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1215 | echo '' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | @echo 'Static analysers' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | @echo ' checkstack - Generate a list of stack hogs' |
| 1218 | @echo ' namespacecheck - Name space analysis on compiled kernel' |
Sam Ravnborg | aa025e7 | 2007-11-14 21:34:55 +0100 | [diff] [blame] | 1219 | @echo ' versioncheck - Sanity check on version.h usage' |
Randy Dunlap | ec2d987 | 2007-11-04 12:01:55 -0800 | [diff] [blame] | 1220 | @echo ' includecheck - Check for duplicate included header files' |
Adrian Bunk | 295ac05 | 2007-08-24 23:04:56 +0200 | [diff] [blame] | 1221 | @echo ' export_report - List the usages of all exported symbols' |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 1222 | @echo ' headers_check - Sanity check on exported headers' |
Nicolas Palix | 74425ee | 2010-06-06 17:15:01 +0200 | [diff] [blame] | 1223 | @echo ' headerdep - Detect inclusion cycles in headers' |
| 1224 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help |
| 1225 | @echo '' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | @echo 'Kernel packaging:' |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1227 | @$(MAKE) $(build)=$(package-dir) help |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | @echo '' |
| 1229 | @echo 'Documentation targets:' |
| 1230 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
| 1231 | @echo '' |
Andres Salomon | 01dee18 | 2008-04-25 22:34:58 -0400 | [diff] [blame] | 1232 | @echo 'Architecture specific targets ($(SRCARCH)):' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | @$(if $(archhelp),$(archhelp),\ |
Andres Salomon | 01dee18 | 2008-04-25 22:34:58 -0400 | [diff] [blame] | 1234 | echo ' No architecture specific help defined for $(SRCARCH)') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | @echo '' |
| 1236 | @$(if $(boards), \ |
| 1237 | $(foreach b, $(boards), \ |
| 1238 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
| 1239 | echo '') |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1240 | @$(if $(board-dirs), \ |
| 1241 | $(foreach b, $(board-dirs), \ |
| 1242 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ |
| 1243 | printf " %-16s - Show all of the above\\n" help-boards; \ |
| 1244 | echo '') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | |
| 1246 | @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] | 1247 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
Dustin Kirkland | 701842e | 2006-05-23 15:57:23 -0500 | [diff] [blame] | 1249 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
| 1250 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | @echo '' |
| 1252 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
| 1253 | @echo 'For further info see the ./README file' |
| 1254 | |
| 1255 | |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1256 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
| 1257 | |
| 1258 | help-boards: $(help-board-dirs) |
| 1259 | |
| 1260 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) |
| 1261 | |
| 1262 | $(help-board-dirs): help-%: |
| 1263 | @echo 'Architecture specific targets ($(SRCARCH) $*):' |
| 1264 | @$(if $(boards-per-dir), \ |
| 1265 | $(foreach b, $(boards-per-dir), \ |
| 1266 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ |
| 1267 | echo '') |
| 1268 | |
| 1269 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | # Documentation targets |
| 1271 | # --------------------------------------------------------------------------- |
| 1272 | %docs: scripts_basic FORCE |
| 1273 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
| 1274 | |
| 1275 | else # KBUILD_EXTMOD |
| 1276 | |
| 1277 | ### |
| 1278 | # External module support. |
| 1279 | # When building external modules the kernel used as basis is considered |
| 1280 | # read-only, and no consistency checks are made and the make |
| 1281 | # system is not used on the basis kernel. If updates are required |
| 1282 | # in the basis kernel ordinary make commands (without M=...) must |
| 1283 | # be used. |
| 1284 | # |
| 1285 | # The following are the only valid targets when building external |
| 1286 | # modules. |
| 1287 | # make M=dir clean Delete all automatically generated files |
| 1288 | # make M=dir modules Make all modules in specified dir |
| 1289 | # make M=dir Same as 'make M=dir modules' |
| 1290 | # make M=dir modules_install |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1291 | # Install the modules built in the module directory |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | # Assumes install directory is already created |
| 1293 | |
| 1294 | # We are always building modules |
| 1295 | KBUILD_MODULES := 1 |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1296 | PHONY += crmodverdir |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | crmodverdir: |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1298 | $(cmd_crmodverdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1300 | PHONY += $(objtree)/Module.symvers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | $(objtree)/Module.symvers: |
| 1302 | @test -e $(objtree)/Module.symvers || ( \ |
| 1303 | echo; \ |
| 1304 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
| 1305 | echo " is missing; modules will have no dependencies and modversions."; \ |
| 1306 | echo ) |
| 1307 | |
| 1308 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1309 | PHONY += $(module-dirs) modules |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
| 1311 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
| 1312 | |
| 1313 | modules: $(module-dirs) |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1314 | @$(kecho) ' Building modules, stage 2.'; |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1315 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1317 | PHONY += modules_install |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1318 | modules_install: _emodinst_ _emodinst_post |
Adrian Bunk | e630466 | 2006-02-14 15:58:15 +0100 | [diff] [blame] | 1319 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1320 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
| 1321 | PHONY += _emodinst_ |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1322 | _emodinst_: |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1323 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1324 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1326 | PHONY += _emodinst_post |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1327 | _emodinst_post: _emodinst_ |
| 1328 | $(call cmd,depmod) |
| 1329 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
| 1331 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1332 | PHONY += $(clean-dirs) clean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | $(clean-dirs): |
| 1334 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| 1335 | |
| 1336 | clean: rm-dirs := $(MODVERDIR) |
Frédéric Brière | 0c56042 | 2009-04-19 12:58:40 -0400 | [diff] [blame] | 1337 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \ |
Michal Marek | bc081dd | 2009-12-07 16:38:33 +0100 | [diff] [blame] | 1338 | $(KBUILD_EXTMOD)/modules.order \ |
| 1339 | $(KBUILD_EXTMOD)/modules.builtin |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | clean: $(clean-dirs) |
| 1341 | $(call cmd,rmdirs) |
Mike Frysinger | c34114f | 2007-07-31 19:45:34 -0400 | [diff] [blame] | 1342 | $(call cmd,rmfiles) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1344 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 1345 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
| 1346 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | |
| 1348 | help: |
| 1349 | @echo ' Building external modules.' |
| 1350 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
| 1351 | @echo '' |
| 1352 | @echo ' modules - default target, build the module(s)' |
| 1353 | @echo ' modules_install - install the module' |
| 1354 | @echo ' clean - remove generated files in module directory only' |
| 1355 | @echo '' |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1356 | |
| 1357 | # Dummies... |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1358 | PHONY += prepare scripts |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1359 | prepare: ; |
| 1360 | scripts: ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | endif # KBUILD_EXTMOD |
| 1362 | |
| 1363 | # Generate tags for editors |
| 1364 | # --------------------------------------------------------------------------- |
Sam Ravnborg | a680eed | 2008-12-03 22:24:13 +0100 | [diff] [blame] | 1365 | quiet_cmd_tags = GEN $@ |
| 1366 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | |
Sam Ravnborg | a680eed | 2008-12-03 22:24:13 +0100 | [diff] [blame] | 1368 | tags TAGS cscope: FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | $(call cmd,tags) |
| 1370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | # Scripts to check various things for consistency |
| 1372 | # --------------------------------------------------------------------------- |
| 1373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1374 | includecheck: |
| 1375 | find * $(RCS_FIND_IGNORE) \ |
| 1376 | -name '*.[hcS]' -type f -print | sort \ |
Geert Uytterhoeven | 8000743 | 2007-11-05 11:51:44 +0100 | [diff] [blame] | 1377 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | |
| 1379 | versioncheck: |
| 1380 | find * $(RCS_FIND_IGNORE) \ |
| 1381 | -name '*.[hcS]' -type f -print | sort \ |
Geert Uytterhoeven | 8000743 | 2007-11-05 11:51:44 +0100 | [diff] [blame] | 1382 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | |
Nicolas Palix | 74425ee | 2010-06-06 17:15:01 +0200 | [diff] [blame] | 1384 | coccicheck: |
| 1385 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
| 1386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | namespacecheck: |
| 1388 | $(PERL) $(srctree)/scripts/namespace.pl |
| 1389 | |
Adrian Bunk | 295ac05 | 2007-08-24 23:04:56 +0200 | [diff] [blame] | 1390 | export_report: |
| 1391 | $(PERL) $(srctree)/scripts/export_report.pl |
| 1392 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | endif #ifeq ($(config-targets),1) |
| 1394 | endif #ifeq ($(mixed-targets),1) |
| 1395 | |
Roman Zippel | c30a02e | 2006-06-08 22:12:50 -0700 | [diff] [blame] | 1396 | PHONY += checkstack kernelrelease kernelversion |
Jeff Dike | e3ccf6e | 2006-09-27 01:50:37 -0700 | [diff] [blame] | 1397 | |
Jeff Dike | 011e3a9 | 2006-12-13 00:34:12 -0800 | [diff] [blame] | 1398 | # UML needs a little special treatment here. It wants to use the host |
| 1399 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone |
| 1400 | # else wants $(ARCH), including people doing cross-builds, which means |
| 1401 | # that $(SUBARCH) doesn't work here. |
| 1402 | ifeq ($(ARCH), um) |
| 1403 | CHECKSTACK_ARCH := $(SUBARCH) |
| 1404 | else |
| 1405 | CHECKSTACK_ARCH := $(ARCH) |
| 1406 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | checkstack: |
| 1408 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
Jeff Dike | 011e3a9 | 2006-12-13 00:34:12 -0800 | [diff] [blame] | 1409 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | |
Amerigo Wang | 01ab178 | 2010-06-28 10:45:21 +0800 | [diff] [blame] | 1411 | kernelrelease: include/config/kernel.release |
| 1412 | @echo $(KERNELRELEASE) |
| 1413 | |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 1414 | kernelversion: |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 1415 | @echo $(KERNELVERSION) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1417 | # Single targets |
| 1418 | # --------------------------------------------------------------------------- |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1419 | # Single targets are compatible with: |
Robert P. J. Day | e1b8513 | 2008-02-03 15:14:02 +0200 | [diff] [blame] | 1420 | # - build with mixed source and output |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1421 | # - build with separate output dir 'make O=...' |
| 1422 | # - external modules |
| 1423 | # |
| 1424 | # target-dir => where to store outputfile |
| 1425 | # build-dir => directory in kernel source tree to use |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1426 | |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1427 | ifeq ($(KBUILD_EXTMOD),) |
Sam Ravnborg | aa36087 | 2006-04-06 08:25:31 +0200 | [diff] [blame] | 1428 | build-dir = $(patsubst %/,%,$(dir $@)) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1429 | target-dir = $(dir $@) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1430 | else |
| 1431 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1432 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
| 1433 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1434 | endif |
| 1435 | |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1436 | %.s: %.c prepare scripts FORCE |
| 1437 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1438 | %.i: %.c prepare scripts FORCE |
| 1439 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1440 | %.o: %.c prepare scripts FORCE |
| 1441 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1442 | %.lst: %.c prepare scripts FORCE |
| 1443 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1444 | %.s: %.S prepare scripts FORCE |
| 1445 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1446 | %.o: %.S prepare scripts FORCE |
| 1447 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 1448 | %.symtypes: %.c prepare scripts FORCE |
| 1449 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1450 | |
| 1451 | # Modules |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 1452 | /: prepare scripts FORCE |
| 1453 | $(cmd_crmodverdir) |
| 1454 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
| 1455 | $(build)=$(build-dir) |
| 1456 | %/: prepare scripts FORCE |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1457 | $(cmd_crmodverdir) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1458 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1459 | $(build)=$(build-dir) |
| 1460 | %.ko: prepare scripts FORCE |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1461 | $(cmd_crmodverdir) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1462 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1463 | $(build)=$(build-dir) $(@:.ko=.o) |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1464 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | # FIXME Should go into a make.lib or something |
| 1467 | # =========================================================================== |
| 1468 | |
| 1469 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
| 1470 | cmd_rmdirs = rm -rf $(rm-dirs) |
| 1471 | |
| 1472 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
| 1473 | cmd_rmfiles = rm -f $(rm-files) |
| 1474 | |
Uwe Kleine-König | bc3c26f | 2008-04-21 22:53:56 +0000 | [diff] [blame] | 1475 | # Run depmod only if we have System.map and depmod is executable |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1476 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
| 1477 | cmd_depmod = \ |
Sam Ravnborg | d8d2e78 | 2007-10-22 11:30:45 +0200 | [diff] [blame] | 1478 | if [ -r System.map -a -x $(DEPMOD) ]; then \ |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1479 | $(DEPMOD) -ae -F System.map \ |
Gilles Espinasse | 75bccd8 | 2009-03-07 13:57:25 +0100 | [diff] [blame] | 1480 | $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1481 | $(KERNELRELEASE); \ |
| 1482 | fi |
| 1483 | |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1484 | # Create temporary dir for module support files |
Sam Ravnborg | ab19f87 | 2007-10-22 11:23:07 +0200 | [diff] [blame] | 1485 | # clean it up only when building all modules |
| 1486 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ |
| 1487 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 1489 | a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ |
Sam Ravnborg | 80c00ba | 2010-07-28 19:11:27 +0200 | [diff] [blame] | 1490 | $(KBUILD_AFLAGS_KERNEL) \ |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 1491 | $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ |
Sam Ravnborg | 5e8d780 | 2006-07-01 09:58:02 +0200 | [diff] [blame] | 1492 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | |
| 1494 | quiet_cmd_as_o_S = AS $@ |
| 1495 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< |
| 1496 | |
| 1497 | # read all saved command lines |
| 1498 | |
| 1499 | targets := $(wildcard $(sort $(targets))) |
| 1500 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
| 1501 | |
| 1502 | ifneq ($(cmd_files),) |
| 1503 | $(cmd_files): ; # Do not try to update included dependency files |
| 1504 | include $(cmd_files) |
| 1505 | endif |
| 1506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
| 1508 | # Usage: |
| 1509 | # $(Q)$(MAKE) $(clean)=dir |
| 1510 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
| 1511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | endif # skip-makefile |
| 1513 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1514 | PHONY += FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | FORCE: |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1516 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1517 | # Declare the contents of the .PHONY variable as phony. We keep that |
Kirill Smelkov | fe8d0a4 | 2009-04-09 15:34:34 +0400 | [diff] [blame] | 1518 | # 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] | 1519 | .PHONY: $(PHONY) |