Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | VERSION = 2 |
| 2 | PATCHLEVEL = 6 |
Linus Torvalds | 17d857b | 2009-09-27 14:57:48 -0700 | [diff] [blame] | 3 | SUBLEVEL = 32 |
Linus Torvalds | 1612913 | 2009-10-11 14:43:56 -0700 | [diff] [blame] | 4 | EXTRAVERSION = -rc4 |
Linus Torvalds | 59a3759 | 2009-05-23 14:47:00 -0700 | [diff] [blame] | 5 | NAME = Man-Eating Seals of Antiquity |
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 | |
| 19 | # We are using a recursive build, so we need to do a little thinking |
| 20 | # to get the ordering right. |
| 21 | # |
| 22 | # Most importantly: sub-Makefiles should only ever modify files in |
| 23 | # their own directory. If in some directory we have a dependency on |
| 24 | # a file in another dir (which doesn't happen often, but it's often |
| 25 | # unavoidable when linking the built-in.o targets which finally |
| 26 | # turn into vmlinux), we will call a sub make in that other dir, and |
| 27 | # after that we are sure that everything which is in that other dir |
| 28 | # is now up to date. |
| 29 | # |
| 30 | # The only cases where we need to modify files which have global |
| 31 | # effects are thus separated out and done before the recursive |
| 32 | # descending is started. They are now explicitly listed as the |
| 33 | # prepare rule. |
| 34 | |
| 35 | # To put more focus on warnings, be less verbose as default |
| 36 | # Use 'make V=1' to see the full commands |
| 37 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 38 | ifeq ("$(origin V)", "command line") |
| 39 | KBUILD_VERBOSE = $(V) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | endif |
| 41 | ifndef KBUILD_VERBOSE |
| 42 | KBUILD_VERBOSE = 0 |
| 43 | endif |
| 44 | |
Robert P. J. Day | 1c7bafe | 2006-09-13 07:57:50 -0400 | [diff] [blame] | 45 | # Call a source code checker (by default, "sparse") as part of the |
| 46 | # C compilation. |
| 47 | # |
| 48 | # Use 'make C=1' to enable checking of only re-compiled files. |
| 49 | # Use 'make C=2' to enable checking of *all* source files, regardless |
| 50 | # of whether they are re-compiled or not. |
| 51 | # |
| 52 | # See the file "Documentation/sparse.txt" for more details, including |
| 53 | # where to get the "sparse" utility. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 55 | ifeq ("$(origin C)", "command line") |
| 56 | KBUILD_CHECKSRC = $(C) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | endif |
| 58 | ifndef KBUILD_CHECKSRC |
| 59 | KBUILD_CHECKSRC = 0 |
| 60 | endif |
| 61 | |
| 62 | # Use make M=dir to specify directory of external module to build |
| 63 | # Old syntax make ... SUBDIRS=$PWD is still supported |
| 64 | # Setting the environment variable KBUILD_EXTMOD take precedence |
| 65 | ifdef SUBDIRS |
| 66 | KBUILD_EXTMOD ?= $(SUBDIRS) |
| 67 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 69 | ifeq ("$(origin M)", "command line") |
| 70 | KBUILD_EXTMOD := $(M) |
| 71 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | # kbuild supports saving output files in a separate directory. |
| 74 | # To locate output files in a separate directory two syntaxes are supported. |
| 75 | # In both cases the working directory must be the root of the kernel src. |
| 76 | # 1) O= |
| 77 | # Use "make O=dir/to/store/output/files/" |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 78 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | # 2) Set KBUILD_OUTPUT |
| 80 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
| 81 | # where the output files shall be placed. |
| 82 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
| 83 | # make |
| 84 | # |
| 85 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
| 86 | # variable. |
| 87 | |
| 88 | |
| 89 | # KBUILD_SRC is set on invocation of make in OBJ directory |
| 90 | # KBUILD_SRC is not intended to be used by the regular user (for now) |
| 91 | ifeq ($(KBUILD_SRC),) |
| 92 | |
| 93 | # OK, Make called in directory where kernel src resides |
| 94 | # Do we want to locate output files in a separate directory? |
Cheng Renquan | b8b0618 | 2009-05-26 16:03:07 +0800 | [diff] [blame] | 95 | ifeq ("$(origin O)", "command line") |
| 96 | KBUILD_OUTPUT := $(O) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | endif |
| 98 | |
| 99 | # 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] | 100 | PHONY := _all |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | _all: |
| 102 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 103 | # Cancel implicit rules on top Makefile |
| 104 | $(CURDIR)/Makefile Makefile: ; |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | ifneq ($(KBUILD_OUTPUT),) |
| 107 | # Invoke a second make in the output directory, passing relevant variables |
| 108 | # check that the output directory actually exists |
| 109 | saved-output := $(KBUILD_OUTPUT) |
| 110 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) |
| 111 | $(if $(KBUILD_OUTPUT),, \ |
| 112 | $(error output directory "$(saved-output)" does not exist)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 114 | PHONY += $(MAKECMDGOALS) sub-make |
| 115 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 116 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 117 | $(Q)@: |
| 118 | |
| 119 | sub-make: FORCE |
Sam Ravnborg | 23a45e2 | 2005-07-27 09:12:07 +0200 | [diff] [blame] | 120 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
| 121 | KBUILD_SRC=$(CURDIR) \ |
Milton Miller | 0b35786 | 2007-09-21 18:09:02 -0500 | [diff] [blame] | 122 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
| 123 | $(filter-out _all sub-make,$(MAKECMDGOALS)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
| 125 | # Leave processing to above invocation of make |
| 126 | skip-makefile := 1 |
| 127 | endif # ifneq ($(KBUILD_OUTPUT),) |
| 128 | endif # ifeq ($(KBUILD_SRC),) |
| 129 | |
| 130 | # We process the rest of the Makefile if this is the final invocation of make |
| 131 | ifeq ($(skip-makefile),) |
| 132 | |
| 133 | # If building an external module we do not care about the all: rule |
| 134 | # but instead _all depend on modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 135 | PHONY += all |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | ifeq ($(KBUILD_EXTMOD),) |
| 137 | _all: all |
| 138 | else |
| 139 | _all: modules |
| 140 | endif |
| 141 | |
| 142 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | objtree := $(CURDIR) |
| 144 | src := $(srctree) |
| 145 | obj := $(objtree) |
| 146 | |
Mattia Dongili | 0f558c3 | 2006-02-19 13:50:37 +0100 | [diff] [blame] | 147 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
Amerigo Wang | 1129423 | 2009-06-19 03:40:26 -0400 | [diff] [blame] | 149 | export srctree objtree VPATH |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | |
| 152 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
| 153 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
| 154 | # line overrides the setting of ARCH below. If a native build is happening, |
| 155 | # then ARCH is assigned, getting whatever value it gets normally, and |
| 156 | # SUBARCH is subsequently ignored. |
| 157 | |
| 158 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ |
| 159 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
Linus Torvalds | 39990b5 | 2005-11-11 14:27:32 -0800 | [diff] [blame] | 160 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
Paul Mundt | 236b195 | 2007-11-02 12:22:47 +0900 | [diff] [blame] | 161 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
Paul Mundt | 3cc000b | 2009-04-11 08:39:27 +0900 | [diff] [blame] | 162 | -e s/sh[234].*/sh/ ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
| 164 | # Cross compiling and selecting different set of gcc/bin-utils |
| 165 | # --------------------------------------------------------------------------- |
| 166 | # |
| 167 | # When performing cross compilation for other architectures ARCH shall be set |
| 168 | # to the target architecture. (See arch/* for the possibilities). |
| 169 | # ARCH can be set during invocation of make: |
| 170 | # make ARCH=ia64 |
| 171 | # Another way is to have ARCH set in the environment. |
| 172 | # The default ARCH is the host where make is executed. |
| 173 | |
| 174 | # CROSS_COMPILE specify the prefix used for all executables used |
| 175 | # during compilation. Only gcc and related bin-utils executables |
| 176 | # are prefixed with $(CROSS_COMPILE). |
| 177 | # CROSS_COMPILE can be set on the command line |
| 178 | # make CROSS_COMPILE=ia64-linux- |
| 179 | # Alternatively CROSS_COMPILE can be set in the environment. |
| 180 | # Default value for CROSS_COMPILE is not to prefix executables |
| 181 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
Sam Ravnborg | 4ce6efe | 2008-03-23 21:38:54 +0100 | [diff] [blame] | 182 | export KBUILD_BUILDHOST := $(SUBARCH) |
Sam Ravnborg | 2331d1a | 2009-10-11 23:22:58 +0200 | [diff] [blame] | 183 | ARCH ?= $(SUBARCH) |
| 184 | CROSS_COMPILE ?= |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
| 186 | # Architecture as present in compile.h |
Thomas Gleixner | 6752ed9 | 2007-10-11 11:11:36 +0200 | [diff] [blame] | 187 | UTS_MACHINE := $(ARCH) |
| 188 | SRCARCH := $(ARCH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Sam Ravnborg | d746d64 | 2007-11-12 20:14:19 +0100 | [diff] [blame] | 190 | # Additional ARCH settings for x86 |
| 191 | ifeq ($(ARCH),i386) |
| 192 | SRCARCH := x86 |
| 193 | endif |
| 194 | ifeq ($(ARCH),x86_64) |
| 195 | SRCARCH := x86 |
| 196 | endif |
Sam Ravnborg | 74b469f | 2007-10-25 19:42:04 +0200 | [diff] [blame] | 197 | |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 198 | # Additional ARCH settings for sparc |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 199 | ifeq ($(ARCH),sparc64) |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 200 | SRCARCH := sparc |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 201 | endif |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 202 | |
Paul Mundt | 3cc000b | 2009-04-11 08:39:27 +0900 | [diff] [blame] | 203 | # Additional ARCH settings for sh |
| 204 | ifeq ($(ARCH),sh64) |
| 205 | SRCARCH := sh |
| 206 | endif |
| 207 | |
Sam Ravnborg | 5e53879 | 2008-12-02 23:17:12 -0800 | [diff] [blame] | 208 | # Where to locate arch specific headers |
| 209 | hdr-arch := $(SRCARCH) |
| 210 | |
Sam Ravnborg | 4914802 | 2009-01-16 21:58:10 +1000 | [diff] [blame] | 211 | ifeq ($(ARCH),m68knommu) |
| 212 | hdr-arch := m68k |
| 213 | endif |
| 214 | |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 215 | KCONFIG_CONFIG ?= .config |
| 216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | # SHELL used by kbuild |
| 218 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
| 219 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
| 220 | else echo sh; fi ; fi) |
| 221 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 222 | HOSTCC = gcc |
| 223 | HOSTCXX = g++ |
| 224 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer |
| 225 | HOSTCXXFLAGS = -O2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 227 | # Decide whether to build built-in, modular, or both. |
| 228 | # Normally, just do built-in. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
| 230 | KBUILD_MODULES := |
| 231 | KBUILD_BUILTIN := 1 |
| 232 | |
| 233 | # If we have only "make modules", don't compile built-in objects. |
| 234 | # When we're building modules with modversions, we need to consider |
| 235 | # the built-in objects during the descend as well, in order to |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 236 | # make sure the checksums are up to date before we record them. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | ifeq ($(MAKECMDGOALS),modules) |
| 239 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
| 240 | endif |
| 241 | |
| 242 | # If we have "make <whatever> modules", compile modules |
| 243 | # in addition to whatever we do anyway. |
| 244 | # Just "make" or "make all" shall build modules as well |
| 245 | |
| 246 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
| 247 | KBUILD_MODULES := 1 |
| 248 | endif |
| 249 | |
| 250 | ifeq ($(MAKECMDGOALS),) |
| 251 | KBUILD_MODULES := 1 |
| 252 | endif |
| 253 | |
Sam Ravnborg | e579d35 | 2005-07-27 08:10:10 +0200 | [diff] [blame] | 254 | export KBUILD_MODULES KBUILD_BUILTIN |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
| 256 | |
| 257 | # Beautify output |
| 258 | # --------------------------------------------------------------------------- |
| 259 | # |
| 260 | # Normally, we echo the whole command before executing it. By making |
| 261 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
| 262 | # $(quiet) to choose other forms of output instead, e.g. |
| 263 | # |
| 264 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
| 265 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
| 266 | # |
| 267 | # If $(quiet) is empty, the whole command will be printed. |
| 268 | # 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] | 269 | # 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] | 270 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
| 271 | # |
Adrian Bunk | a58a414 | 2006-01-10 00:08:17 +0100 | [diff] [blame] | 272 | # A simple variant is to prefix commands with $(Q) - that's useful |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | # for commands that shall be hidden in non-verbose mode. |
| 274 | # |
| 275 | # $(Q)ln $@ :< |
| 276 | # |
| 277 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
| 278 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
| 279 | |
| 280 | ifeq ($(KBUILD_VERBOSE),1) |
| 281 | quiet = |
| 282 | Q = |
| 283 | else |
| 284 | quiet=quiet_ |
| 285 | Q = @ |
| 286 | endif |
| 287 | |
| 288 | # If the user is running make -s (silent mode), suppress echoing of |
| 289 | # commands |
| 290 | |
| 291 | ifneq ($(findstring s,$(MAKEFLAGS)),) |
| 292 | quiet=silent_ |
| 293 | endif |
| 294 | |
| 295 | export quiet Q KBUILD_VERBOSE |
| 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | |
| 298 | # Look for make include files relative to root of kernel src |
| 299 | MAKEFLAGS += --include-dir=$(srctree) |
| 300 | |
Sam Ravnborg | 1cacc9a | 2007-12-06 22:20:11 +0100 | [diff] [blame] | 301 | # We need some generic definitions (do not try to remake the file). |
| 302 | $(srctree)/scripts/Kbuild.include: ; |
Oleg Verych | 1596486 | 2006-12-10 02:18:40 -0800 | [diff] [blame] | 303 | include $(srctree)/scripts/Kbuild.include |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | |
| 305 | # Make variables (CC, etc...) |
| 306 | |
| 307 | AS = $(CROSS_COMPILE)as |
| 308 | LD = $(CROSS_COMPILE)ld |
| 309 | CC = $(CROSS_COMPILE)gcc |
| 310 | CPP = $(CC) -E |
| 311 | AR = $(CROSS_COMPILE)ar |
| 312 | NM = $(CROSS_COMPILE)nm |
| 313 | STRIP = $(CROSS_COMPILE)strip |
| 314 | OBJCOPY = $(CROSS_COMPILE)objcopy |
| 315 | OBJDUMP = $(CROSS_COMPILE)objdump |
| 316 | AWK = awk |
| 317 | GENKSYMS = scripts/genksyms/genksyms |
Sam Ravnborg | caa27b6 | 2009-07-20 21:37:11 +0200 | [diff] [blame] | 318 | INSTALLKERNEL := installkernel |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | DEPMOD = /sbin/depmod |
| 320 | KALLSYMS = scripts/kallsyms |
| 321 | PERL = perl |
| 322 | CHECK = sparse |
| 323 | |
Hannes Eder | 80a7d1d | 2008-12-27 22:38:44 +0100 | [diff] [blame] | 324 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
| 325 | -Wbitwise -Wno-return-void $(CF) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | MODFLAGS = -DMODULE |
| 327 | CFLAGS_MODULE = $(MODFLAGS) |
| 328 | AFLAGS_MODULE = $(MODFLAGS) |
Tejun Heo | 405d967 | 2009-06-24 15:13:38 +0900 | [diff] [blame] | 329 | LDFLAGS_MODULE = -T $(srctree)/scripts/module-common.lds |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | CFLAGS_KERNEL = |
| 331 | AFLAGS_KERNEL = |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 332 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
| 334 | |
| 335 | # Use LINUXINCLUDE when you must reference the include/ directory. |
| 336 | # Needed to be compatible with the O= option |
| 337 | LINUXINCLUDE := -Iinclude \ |
Russell King | 2dd34b4 | 2005-10-30 22:42:11 +0100 | [diff] [blame] | 338 | $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ |
Sam Ravnborg | 5e4786f | 2008-06-22 21:48:26 +0200 | [diff] [blame] | 339 | -I$(srctree)/arch/$(hdr-arch)/include \ |
| 340 | -include include/linux/autoconf.h |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 342 | KBUILD_CPPFLAGS := -D__KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 344 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
Dave Jones | 94bed2a | 2007-07-15 23:41:38 -0700 | [diff] [blame] | 345 | -fno-strict-aliasing -fno-common \ |
Floris Kraak | a873582 | 2009-06-15 08:54:02 +0300 | [diff] [blame] | 346 | -Werror-implicit-function-declaration \ |
Eugene Teo | a3ca86a | 2009-07-15 14:59:10 +0800 | [diff] [blame] | 347 | -Wno-format-security \ |
| 348 | -fno-delete-null-pointer-checks |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 349 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 351 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
| 352 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 353 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 354 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 355 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
Sam Ravnborg | 80ef88d | 2007-11-17 15:37:31 +0100 | [diff] [blame] | 356 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
Sam Ravnborg | caa27b6 | 2009-07-20 21:37:11 +0200 | [diff] [blame] | 357 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
| 358 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 359 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
Sam Ravnborg | 06c5040 | 2007-10-15 22:17:25 +0200 | [diff] [blame] | 361 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 362 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 363 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
| 365 | # When compiling out-of-tree modules, put MODVERDIR in the module |
| 366 | # tree rather than in the kernel tree. The kernel tree might |
| 367 | # even be read-only. |
| 368 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
| 369 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | # Files to ignore in find ... statements |
| 371 | |
Trond Myklebust | 406119f | 2005-10-27 14:46:53 -0400 | [diff] [blame] | 372 | 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 |
| 373 | 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] | 374 | |
| 375 | # =========================================================================== |
| 376 | # Rules shared between *config targets and build targets |
| 377 | |
| 378 | # Basic helpers built in scripts/ |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 379 | PHONY += scripts_basic |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | scripts_basic: |
| 381 | $(Q)$(MAKE) $(build)=scripts/basic |
| 382 | |
Jan Beulich | cd05e6b | 2005-09-06 11:47:04 +0200 | [diff] [blame] | 383 | # To avoid any implicit rule to kick in, define an empty command. |
| 384 | scripts/basic/%: scripts_basic ; |
| 385 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 386 | PHONY += outputmakefile |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 387 | # outputmakefile generates a Makefile in the output directory, if using a |
| 388 | # separate output directory. This allows convenient use of make in the |
| 389 | # output directory. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | outputmakefile: |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 391 | ifneq ($(KBUILD_SRC),) |
Andi Kleen | 9297999 | 2009-01-10 04:56:13 +0100 | [diff] [blame] | 392 | $(Q)ln -fsn $(srctree) source |
Jan Beulich | fd5f0cd | 2006-05-02 12:33:20 +0200 | [diff] [blame] | 393 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
| 394 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
| 395 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | |
| 397 | # To make sure we do not include .config for any of the *config targets |
| 398 | # catch them early, and hand them over to scripts/kconfig/Makefile |
| 399 | # It is allowed to specify more targets when calling make, including |
| 400 | # mixing *config targets and build targets. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 401 | # For example 'make oldconfig all'. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | # Detect when mixed targets is specified, and make a second invocation |
| 403 | # of make so .config is not included in this case either (for *config). |
| 404 | |
Roman Zippel | 3eb3c74 | 2007-01-10 14:45:28 +0100 | [diff] [blame] | 405 | no-dot-config-targets := clean mrproper distclean \ |
Roman Zippel | c30a02e | 2006-06-08 22:12:50 -0700 | [diff] [blame] | 406 | cscope TAGS tags help %docs check% \ |
Roman Zippel | 3eb3c74 | 2007-01-10 14:45:28 +0100 | [diff] [blame] | 407 | include/linux/version.h headers_% \ |
| 408 | kernelrelease kernelversion |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | config-targets := 0 |
| 411 | mixed-targets := 0 |
| 412 | dot-config := 1 |
| 413 | |
| 414 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
| 415 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
| 416 | dot-config := 0 |
| 417 | endif |
| 418 | endif |
| 419 | |
| 420 | ifeq ($(KBUILD_EXTMOD),) |
| 421 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
| 422 | config-targets := 1 |
| 423 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
| 424 | mixed-targets := 1 |
| 425 | endif |
| 426 | endif |
| 427 | endif |
| 428 | |
| 429 | ifeq ($(mixed-targets),1) |
| 430 | # =========================================================================== |
| 431 | # We're called with mixed targets (*config and build targets). |
| 432 | # Handle them one by one. |
| 433 | |
| 434 | %:: FORCE |
| 435 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ |
| 436 | |
| 437 | else |
| 438 | ifeq ($(config-targets),1) |
| 439 | # =========================================================================== |
| 440 | # *config targets only - make sure prerequisites are updated, and descend |
| 441 | # in scripts/kconfig to make the *config target |
| 442 | |
| 443 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
| 444 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
| 445 | # used for 'make defconfig' |
Sam Ravnborg | 74b469f | 2007-10-25 19:42:04 +0200 | [diff] [blame] | 446 | include $(srctree)/arch/$(SRCARCH)/Makefile |
Al Viro | 61bee20 | 2008-08-25 04:51:27 -0400 | [diff] [blame] | 447 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 449 | config: scripts_basic outputmakefile FORCE |
| 450 | $(Q)mkdir -p include/linux include/config |
| 451 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 452 | |
| 453 | %config: scripts_basic outputmakefile FORCE |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 454 | $(Q)mkdir -p include/linux include/config |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 456 | |
| 457 | else |
| 458 | # =========================================================================== |
| 459 | # Build targets only - this includes vmlinux, arch specific targets, clean |
| 460 | # targets and others. In general all targets except *config targets. |
| 461 | |
| 462 | ifeq ($(KBUILD_EXTMOD),) |
| 463 | # Additional helpers built in scripts/ |
| 464 | # Carefully list dependencies so we do not try to build scripts twice |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 465 | # in parallel |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 466 | PHONY += scripts |
Roman Zippel | 2e3646e | 2006-06-08 22:12:42 -0700 | [diff] [blame] | 467 | scripts: scripts_basic include/config/auto.conf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | $(Q)$(MAKE) $(build)=$(@) |
| 469 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | # Objects we will link into vmlinux / subdirs we need to visit |
| 471 | init-y := init/ |
David Woodhouse | 4d2acfb | 2008-05-23 13:58:12 +0100 | [diff] [blame] | 472 | drivers-y := drivers/ sound/ firmware/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | net-y := net/ |
| 474 | libs-y := lib/ |
| 475 | core-y := usr/ |
| 476 | endif # KBUILD_EXTMOD |
| 477 | |
| 478 | ifeq ($(dot-config),1) |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 479 | # Read in config |
| 480 | -include include/config/auto.conf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 482 | ifeq ($(KBUILD_EXTMOD),) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | # Read in dependencies to all Kconfig* files, make sure to run |
| 484 | # oldconfig if changes are detected. |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 485 | -include include/config/auto.conf.cmd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | # To avoid any implicit rule to kick in, define an empty command |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 488 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 490 | # If .config is newer than include/config/auto.conf, someone tinkered |
Sam Ravnborg | 752625c | 2005-12-26 23:34:03 +0100 | [diff] [blame] | 491 | # with it and forgot to run make oldconfig. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 492 | # 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] | 493 | # we execute the config step to be sure to catch updated Kconfig files |
Roman Zippel | 14cdd3c | 2006-06-08 22:12:51 -0700 | [diff] [blame] | 494 | include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
| 496 | else |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 497 | # external modules needs include/linux/autoconf.h and include/config/auto.conf |
| 498 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
| 499 | PHONY += include/config/auto.conf |
| 500 | |
| 501 | include/config/auto.conf: |
| 502 | $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ |
| 503 | echo; \ |
| 504 | echo " ERROR: Kernel configuration is invalid."; \ |
| 505 | echo " include/linux/autoconf.h or $@ are missing."; \ |
| 506 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
| 507 | echo; \ |
| 508 | /bin/false) |
| 509 | |
| 510 | endif # KBUILD_EXTMOD |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | else |
| 513 | # Dummy target needed, because used as prerequisite |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 514 | include/config/auto.conf: ; |
Sam Ravnborg | 9ee4e33 | 2006-08-07 21:01:36 +0200 | [diff] [blame] | 515 | endif # $(dot-config) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | |
| 517 | # The all: target is the default when no target is given on the |
| 518 | # command line. |
| 519 | # This allow a user to issue only 'make' to build a kernel including modules |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 520 | # Defaults vmlinux but it is usually overridden in the arch makefile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | all: vmlinux |
| 522 | |
| 523 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 524 | KBUILD_CFLAGS += -Os |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | else |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 526 | KBUILD_CFLAGS += -O2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | endif |
| 528 | |
Ralf Baechle | bef5b54 | 2008-07-16 13:02:24 +0100 | [diff] [blame] | 529 | include $(srctree)/arch/$(SRCARCH)/Makefile |
| 530 | |
Mike Frysinger | 08f6746 | 2009-06-04 16:29:08 -0700 | [diff] [blame] | 531 | ifneq ($(CONFIG_FRAME_WARN),0) |
Andi Kleen | 35bb5b1 | 2008-02-22 15:15:03 +0100 | [diff] [blame] | 532 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
| 533 | endif |
| 534 | |
Sam Ravnborg | e06b8b9 | 2008-02-13 22:43:28 +0100 | [diff] [blame] | 535 | # Force gcc to behave correct even for buggy distributions |
Tejun Heo | 5d707e9 | 2009-02-09 22:17:39 +0900 | [diff] [blame] | 536 | ifndef CONFIG_CC_STACKPROTECTOR |
Sam Ravnborg | e06b8b9 | 2008-02-13 22:43:28 +0100 | [diff] [blame] | 537 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
Tejun Heo | 5d707e9 | 2009-02-09 22:17:39 +0900 | [diff] [blame] | 538 | endif |
Sam Ravnborg | e06b8b9 | 2008-02-13 22:43:28 +0100 | [diff] [blame] | 539 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | ifdef CONFIG_FRAME_POINTER |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 541 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | else |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 543 | KBUILD_CFLAGS += -fomit-frame-pointer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | endif |
| 545 | |
| 546 | ifdef CONFIG_DEBUG_INFO |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 547 | KBUILD_CFLAGS += -g |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 548 | KBUILD_AFLAGS += -gdwarf-2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | endif |
| 550 | |
Steven Rostedt | 606576c | 2008-10-06 19:06:12 -0400 | [diff] [blame] | 551 | ifdef CONFIG_FUNCTION_TRACER |
Arnaldo Carvalho de Melo | 16444a8 | 2008-05-12 21:20:42 +0200 | [diff] [blame] | 552 | KBUILD_CFLAGS += -pg |
| 553 | endif |
| 554 | |
Sam Ravnborg | 91341d4 | 2008-01-21 21:31:44 +0100 | [diff] [blame] | 555 | # We trigger additional mismatches with less inlining |
| 556 | ifdef CONFIG_DEBUG_SECTION_MISMATCH |
| 557 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) |
| 558 | endif |
| 559 | |
Sam Ravnborg | e8e6993 | 2005-04-30 16:51:42 -0700 | [diff] [blame] | 560 | # arch Makefile may override CC so keep this after arch Makefile is included |
Rik van Riel | e8f5bdb0 | 2005-05-16 21:53:46 -0700 | [diff] [blame] | 561 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
Sam Ravnborg | e8e6993 | 2005-04-30 16:51:42 -0700 | [diff] [blame] | 562 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
| 563 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | # warn about C99 declaration after statement |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 565 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 567 | # disable pointer signed / unsigned warnings in gcc 4.0 |
Sam Ravnborg | a0f97e0 | 2007-10-14 22:21:35 +0200 | [diff] [blame] | 568 | KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | |
Kirill Smelkov | fe8d0a4 | 2009-04-09 15:34:34 +0400 | [diff] [blame] | 570 | # disable invalid "can't wrap" optimizations for signed / pointers |
Linus Torvalds | a137802 | 2009-07-12 11:25:04 -0700 | [diff] [blame] | 571 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
Linus Torvalds | d011555 | 2009-03-19 15:53:19 -0700 | [diff] [blame] | 572 | |
Kyle McMartin | 0030864 | 2009-03-23 15:25:49 -0400 | [diff] [blame] | 573 | # revert to pre-gcc-4.4 behaviour of .eh_frame |
| 574 | KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) |
| 575 | |
Andi Kleen | 8f7f5c9 | 2009-09-18 12:49:37 -0700 | [diff] [blame] | 576 | # conserve stack if available |
| 577 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
| 578 | |
Sam Ravnborg | 06c5040 | 2007-10-15 22:17:25 +0200 | [diff] [blame] | 579 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
Sam Ravnborg | 69ee0b3 | 2007-11-04 19:00:46 +0100 | [diff] [blame] | 580 | # But warn user when we do so |
| 581 | warn-assign = \ |
| 582 | $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") |
| 583 | |
| 584 | ifneq ($(KCPPFLAGS),) |
| 585 | $(call warn-assign,CPPFLAGS) |
| 586 | KBUILD_CPPFLAGS += $(KCPPFLAGS) |
| 587 | endif |
| 588 | ifneq ($(KAFLAGS),) |
| 589 | $(call warn-assign,AFLAGS) |
| 590 | KBUILD_AFLAGS += $(KAFLAGS) |
| 591 | endif |
| 592 | ifneq ($(KCFLAGS),) |
| 593 | $(call warn-assign,CFLAGS) |
| 594 | KBUILD_CFLAGS += $(KCFLAGS) |
| 595 | endif |
Sam Ravnborg | 52bcc33 | 2007-10-15 22:03:58 +0200 | [diff] [blame] | 596 | |
Roland McGrath | 1899119 | 2007-07-19 01:48:40 -0700 | [diff] [blame] | 597 | # Use --build-id when available. |
| 598 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |
Sam Ravnborg | f86fd30 | 2009-09-19 10:14:33 +0200 | [diff] [blame] | 599 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
Roland McGrath | 1899119 | 2007-07-19 01:48:40 -0700 | [diff] [blame] | 600 | LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
| 601 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
| 602 | |
David Howells | 5d7d18f | 2009-03-04 11:59:07 -0800 | [diff] [blame] | 603 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
Andi Kleen | d79a271 | 2009-09-16 22:36:55 +0200 | [diff] [blame] | 604 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
David Howells | 5d7d18f | 2009-03-04 11:59:07 -0800 | [diff] [blame] | 605 | endif |
| 606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | # Default kernel image to build when no specific target is given. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 608 | # KBUILD_IMAGE may be overruled on the command line or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | # set in the environment |
| 610 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
| 611 | # this default value |
| 612 | export KBUILD_IMAGE ?= vmlinux |
| 613 | |
| 614 | # |
| 615 | # INSTALL_PATH specifies where to place the updated kernel and system map |
| 616 | # images. Default is /boot, but you can set it to other values |
| 617 | export INSTALL_PATH ?= /boot |
| 618 | |
| 619 | # |
| 620 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
| 621 | # relocations required by build roots. This is not defined in the |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 622 | # makefile but the argument can be passed to make if needed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | # |
| 624 | |
Sam Ravnborg | df9df03 | 2006-01-16 12:46:07 +0100 | [diff] [blame] | 625 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | export MODLIB |
| 627 | |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 628 | # |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 629 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
| 630 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then |
| 631 | # the default option --strip-debug will be used. Otherwise, |
| 632 | # INSTALL_MOD_STRIP will used as the options to the strip command. |
| 633 | |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 634 | ifdef INSTALL_MOD_STRIP |
| 635 | ifeq ($(INSTALL_MOD_STRIP),1) |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 636 | mod_strip_cmd = $(STRIP) --strip-debug |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 637 | else |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 638 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 639 | endif # INSTALL_MOD_STRIP=1 |
| 640 | else |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 641 | mod_strip_cmd = true |
Theodore Ts'o | ac031f2 | 2006-06-21 20:53:09 -0400 | [diff] [blame] | 642 | endif # INSTALL_MOD_STRIP |
| 643 | export mod_strip_cmd |
| 644 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | |
| 646 | ifeq ($(KBUILD_EXTMOD),) |
Jens Axboe | 3a65dfe | 2005-11-04 08:43:35 +0100 | [diff] [blame] | 647 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | |
| 649 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
| 650 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
| 651 | $(net-y) $(net-m) $(libs-y) $(libs-m))) |
| 652 | |
| 653 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
| 654 | $(init-n) $(init-) \ |
| 655 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ |
| 656 | $(net-n) $(net-) $(libs-n) $(libs-)))) |
| 657 | |
| 658 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
| 659 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
| 660 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
| 661 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
| 662 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
| 663 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
| 664 | libs-y := $(libs-y1) $(libs-y2) |
| 665 | |
| 666 | # Build vmlinux |
| 667 | # --------------------------------------------------------------------------- |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 668 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
Uwe Zeisberger | 2462566 | 2006-10-05 16:24:45 +0200 | [diff] [blame] | 670 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
| 672 | # |
| 673 | # vmlinux |
| 674 | # ^ |
| 675 | # | |
| 676 | # +-< $(vmlinux-init) |
| 677 | # | +--< init/version.o + more |
| 678 | # | |
| 679 | # +--< $(vmlinux-main) |
| 680 | # | +--< driver/built-in.o mm/built-in.o + more |
| 681 | # | |
| 682 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) |
| 683 | # |
| 684 | # vmlinux version (uname -v) cannot be updated during normal |
| 685 | # descending-into-subdirs phase since we do not yet know if we need to |
| 686 | # update vmlinux. |
| 687 | # Therefore this step is delayed until just before final link of vmlinux - |
| 688 | # except in the kallsyms case where it is done just before adding the |
| 689 | # symbols to the kernel. |
| 690 | # |
| 691 | # System.map is generated to document addresses of all kernel symbols |
| 692 | |
| 693 | vmlinux-init := $(head-y) $(init-y) |
| 694 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) |
| 695 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) |
Thomas Gleixner | 6752ed9 | 2007-10-11 11:11:36 +0200 | [diff] [blame] | 696 | vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds |
Sam Ravnborg | 85bd2fd | 2007-02-26 15:33:52 +0100 | [diff] [blame] | 697 | export KBUILD_VMLINUX_OBJS := $(vmlinux-all) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
| 699 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS |
| 700 | # May be overridden by arch/$(ARCH)/Makefile |
| 701 | quiet_cmd_vmlinux__ ?= LD $@ |
| 702 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ |
| 703 | -T $(vmlinux-lds) $(vmlinux-init) \ |
| 704 | --start-group $(vmlinux-main) --end-group \ |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 705 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | |
| 707 | # Generate new vmlinux version |
| 708 | quiet_cmd_vmlinux_version = GEN .version |
| 709 | cmd_vmlinux_version = set -e; \ |
Jan Beulich | 4e25d8b | 2005-09-08 17:07:35 +0200 | [diff] [blame] | 710 | if [ ! -r .version ]; then \ |
| 711 | rm -f .version; \ |
| 712 | echo 1 >.version; \ |
| 713 | else \ |
| 714 | mv .version .old_version; \ |
| 715 | expr 0$$(cat .old_version) + 1 >.version; \ |
| 716 | fi; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | $(MAKE) $(build)=init |
| 718 | |
| 719 | # Generate System.map |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 720 | quiet_cmd_sysmap = SYSMAP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
| 722 | |
| 723 | # Link of vmlinux |
| 724 | # If CONFIG_KALLSYMS is set .version is already updated |
| 725 | # Generate System.map and verify that the content is consistent |
Mark Rustad | 39ca371 | 2005-10-17 16:43:34 -0700 | [diff] [blame] | 726 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
| 727 | # First command is ':' to allow us to use + in front of the rule |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | define rule_vmlinux__ |
Mark Rustad | 39ca371 | 2005-10-17 16:43:34 -0700 | [diff] [blame] | 729 | : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
| 731 | |
| 732 | $(call cmd,vmlinux__) |
| 733 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
| 734 | |
Sam Ravnborg | 4635281 | 2006-08-08 21:41:18 +0200 | [diff] [blame] | 735 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
| 736 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ |
| 737 | $(cmd_sysmap) $@ System.map; \ |
| 738 | if [ $$? -ne 0 ]; then \ |
| 739 | rm -f $@; \ |
| 740 | /bin/false; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | fi; |
| 742 | $(verify_kallsyms) |
| 743 | endef |
| 744 | |
| 745 | |
| 746 | ifdef CONFIG_KALLSYMS |
| 747 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) |
| 748 | # It's a three stage process: |
| 749 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is |
| 750 | # empty |
| 751 | # Running kallsyms on that gives us .tmp_kallsyms1.o with |
| 752 | # the right size - vmlinux version (uname -v) is updated during this step |
| 753 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, |
| 754 | # but due to the added section, some addresses have shifted. |
| 755 | # From here, we generate a correct .tmp_kallsyms2.o |
| 756 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. |
| 757 | # o Verify that the System.map from vmlinux matches the map from |
| 758 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. |
| 759 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using |
| 760 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a |
| 761 | # temporary bypass to allow the kernel to be built while the |
| 762 | # maintainers work out what went wrong with kallsyms. |
| 763 | |
| 764 | ifdef CONFIG_KALLSYMS_EXTRA_PASS |
| 765 | last_kallsyms := 3 |
| 766 | else |
| 767 | last_kallsyms := 2 |
| 768 | endif |
| 769 | |
| 770 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o |
| 771 | |
| 772 | define verify_kallsyms |
Sam Ravnborg | 4635281 | 2006-08-08 21:41:18 +0200 | [diff] [blame] | 773 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
| 774 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
Sam Ravnborg | 4635281 | 2006-08-08 21:41:18 +0200 | [diff] [blame] | 776 | $(Q)cmp -s System.map .tmp_System.map || \ |
| 777 | (echo Inconsistent kallsyms data; \ |
| 778 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | rm .tmp_kallsyms* ; /bin/false ) |
| 780 | endef |
| 781 | |
| 782 | # Update vmlinux version before link |
| 783 | # Use + in front of this rule to silent warning about make -j1 |
Sam Ravnborg | 72ba47c | 2005-07-27 11:39:37 +0200 | [diff] [blame] | 784 | # 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] | 785 | cmd_ksym_ld = $(cmd_vmlinux__) |
| 786 | define rule_ksym_ld |
Sam Ravnborg | 72ba47c | 2005-07-27 11:39:37 +0200 | [diff] [blame] | 787 | : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | +$(call cmd,vmlinux_version) |
| 789 | $(call cmd,vmlinux__) |
| 790 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
| 791 | endef |
| 792 | |
| 793 | # Generate .S file with all kernel symbols |
| 794 | quiet_cmd_kallsyms = KSYM $@ |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 795 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ |
| 796 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 798 | .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] | 799 | $(call if_changed_dep,as_o_S) |
| 800 | |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 801 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | $(call cmd,kallsyms) |
| 803 | |
| 804 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 805 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE |
| 806 | $(call if_changed_rule,ksym_ld) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 808 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE |
| 809 | $(call if_changed,vmlinux__) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | |
Sam Ravnborg | 2ea0389 | 2009-01-14 21:38:20 +0100 | [diff] [blame] | 811 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE |
| 812 | $(call if_changed,vmlinux__) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
| 814 | # Needs to visit scripts/ before $(KALLSYMS) can be used. |
| 815 | $(KALLSYMS): scripts ; |
| 816 | |
Sam Ravnborg | 33bc25e | 2005-07-14 20:19:08 +0000 | [diff] [blame] | 817 | # Generate some data for debugging strange kallsyms problems |
| 818 | debug_kallsyms: .tmp_map$(last_kallsyms) |
| 819 | |
| 820 | .tmp_map%: .tmp_vmlinux% FORCE |
| 821 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ |
| 822 | |
| 823 | .tmp_map3: .tmp_map2 |
| 824 | |
| 825 | .tmp_map2: .tmp_map1 |
| 826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | endif # ifdef CONFIG_KALLSYMS |
| 828 | |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 829 | # Do modpost on a prelinked vmlinux. The finally linked vmlinux has |
| 830 | # relevant sections renamed as per the linker script. |
| 831 | quiet_cmd_vmlinux-modpost = LD $@ |
| 832 | cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ |
| 833 | $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ |
Sam Ravnborg | 90ebd87 | 2008-05-01 19:31:35 +0200 | [diff] [blame] | 834 | $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 835 | define rule_vmlinux-modpost |
| 836 | : |
| 837 | +$(call cmd,vmlinux-modpost) |
| 838 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ |
| 839 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd |
| 840 | endef |
| 841 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | # vmlinux image - including updated kernel symbols |
Sam Ravnborg | 310f824 | 2008-01-21 22:57:09 +0100 | [diff] [blame] | 843 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE |
David Woodhouse | 0f836e5f | 2006-10-11 01:21:43 -0700 | [diff] [blame] | 844 | ifdef CONFIG_HEADERS_CHECK |
David Woodhouse | 0e7af8d04 | 2006-10-13 16:04:23 +0100 | [diff] [blame] | 845 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
David Woodhouse | 0f836e5f | 2006-10-11 01:21:43 -0700 | [diff] [blame] | 846 | endif |
Mathieu Desnoyers | 267c402 | 2007-10-18 23:41:07 -0700 | [diff] [blame] | 847 | ifdef CONFIG_SAMPLES |
| 848 | $(Q)$(MAKE) $(build)=samples |
| 849 | endif |
Randy Dunlap | 3794f3e | 2008-08-12 15:09:06 -0700 | [diff] [blame] | 850 | ifdef CONFIG_BUILD_DOCSRC |
| 851 | $(Q)$(MAKE) $(build)=Documentation |
| 852 | endif |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 853 | $(call vmlinux-modpost) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | $(call if_changed_rule,vmlinux__) |
Jan Beulich | 4e25d8b | 2005-09-08 17:07:35 +0200 | [diff] [blame] | 855 | $(Q)rm -f .old_version |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | |
Sam Ravnborg | 310f824 | 2008-01-21 22:57:09 +0100 | [diff] [blame] | 857 | # build vmlinux.o first to catch section mismatch errors early |
Sam Ravnborg | cf87dcd | 2008-02-13 22:50:24 +0100 | [diff] [blame] | 858 | ifdef CONFIG_KALLSYMS |
| 859 | .tmp_vmlinux1: vmlinux.o |
| 860 | endif |
Sam Ravnborg | 90ebd87 | 2008-05-01 19:31:35 +0200 | [diff] [blame] | 861 | |
| 862 | modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) |
| 863 | vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE |
Sam Ravnborg | 741f98f | 2007-07-17 10:54:06 +0200 | [diff] [blame] | 864 | $(call if_changed_rule,vmlinux-modpost) |
| 865 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | # The actual objects are generated when descending, |
| 867 | # make sure no implicit rule kicks in |
| 868 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; |
| 869 | |
| 870 | # Handle descending into subdirectories listed in $(vmlinux-dirs) |
| 871 | # Preset locale variables to speed up the build process. Limit locale |
| 872 | # tweaks to this spot to avoid wrong language settings when running |
| 873 | # make menuconfig etc. |
| 874 | # Error messages still appears in the original language |
| 875 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 876 | PHONY += $(vmlinux-dirs) |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 877 | $(vmlinux-dirs): prepare scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | $(Q)$(MAKE) $(build)=$@ |
| 879 | |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 880 | # Build the kernel release string |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 881 | # |
Robert P. J. Day | 1ef98856 | 2006-09-12 12:38:19 -0400 | [diff] [blame] | 882 | # The KERNELRELEASE value built here is stored in the file |
| 883 | # include/config/kernel.release, and is used when executing several |
| 884 | # make targets, such as "make install" or "make modules_install." |
| 885 | # |
| 886 | # The eventual kernel release string consists of the following fields, |
| 887 | # shown in a hierarchical format to show how smaller parts are concatenated |
| 888 | # to form the larger and final value, with values coming from places like |
| 889 | # the Makefile, kernel config options, make command line options and/or |
| 890 | # SCM tag information. |
| 891 | # |
| 892 | # $(KERNELVERSION) |
| 893 | # $(VERSION) eg, 2 |
| 894 | # $(PATCHLEVEL) eg, 6 |
| 895 | # $(SUBLEVEL) eg, 18 |
| 896 | # $(EXTRAVERSION) eg, -rc6 |
| 897 | # $(localver-full) |
| 898 | # $(localver) |
Oleg Verych | 76c3295 | 2007-02-06 02:18:22 +0100 | [diff] [blame] | 899 | # localversion* (files without backups, containing '~') |
Robert P. J. Day | 1ef98856 | 2006-09-12 12:38:19 -0400 | [diff] [blame] | 900 | # $(CONFIG_LOCALVERSION) (from kernel config setting) |
| 901 | # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) |
| 902 | # ./scripts/setlocalversion (SCM tag, if one exists) |
| 903 | # $(LOCALVERSION) (from make command line if provided) |
| 904 | # |
| 905 | # Note how the final $(localver-auto) string is included *only* if the |
| 906 | # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the |
| 907 | # moment, only git is supported but other SCMs can edit the script |
| 908 | # scripts/setlocalversion and add the appropriate checks as needed. |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 909 | |
Oleg Verych | 76c3295 | 2007-02-06 02:18:22 +0100 | [diff] [blame] | 910 | pattern = ".*/localversion[^~]*" |
| 911 | string = $(shell cat /dev/null \ |
Linus Torvalds | fd19e44 | 2007-02-12 15:05:15 -0800 | [diff] [blame] | 912 | `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`) |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 913 | |
Oleg Verych | 76c3295 | 2007-02-06 02:18:22 +0100 | [diff] [blame] | 914 | localver = $(subst $(space),, $(string) \ |
| 915 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 916 | |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 917 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called |
| 918 | # and if the SCM is know a tag from the SCM is appended. |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 919 | # The appended tag is determined by the SCM used. |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 920 | # |
Josh Hunt | b925dbf | 2009-02-12 10:16:05 -0800 | [diff] [blame] | 921 | # .scmversion is used when generating rpm packages so we do not loose |
| 922 | # the version information from the SCM when we do the build of the kernel |
| 923 | # from the copied source |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 924 | ifdef CONFIG_LOCALVERSION_AUTO |
Josh Hunt | b925dbf | 2009-02-12 10:16:05 -0800 | [diff] [blame] | 925 | |
| 926 | ifeq ($(wildcard .scmversion),) |
| 927 | _localver-auto = $(shell $(CONFIG_SHELL) \ |
| 928 | $(srctree)/scripts/setlocalversion $(srctree)) |
| 929 | else |
| 930 | _localver-auto = $(shell cat .scmversion 2> /dev/null) |
| 931 | endif |
| 932 | |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 933 | localver-auto = $(LOCALVERSION)$(_localver-auto) |
| 934 | endif |
| 935 | |
| 936 | localver-full = $(localver)$(localver-auto) |
| 937 | |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 938 | # Store (new) KERNELRELASE string in include/config/kernel.release |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 939 | kernelrelease = $(KERNELVERSION)$(localver-full) |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 940 | include/config/kernel.release: include/config/auto.conf FORCE |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 941 | $(Q)rm -f $@ |
| 942 | $(Q)echo $(kernelrelease) > $@ |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 943 | |
| 944 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | # Things we need to do before we recursively start building the kernel |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 946 | # or the modules are listed in "prepare". |
| 947 | # A multi level approach is used. prepareN is processed before prepareN-1. |
| 948 | # archprepare is used in arch Makefiles and when processed asm symlink, |
| 949 | # version.h and scripts_basic is processed / created. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 951 | # Listed in dependency order |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 952 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 953 | |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 954 | # 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] | 955 | # and if so do: |
| 956 | # 1) Check that make has not been executed in the kernel src $(srctree) |
| 957 | # 2) Create the include2 directory, used for the second asm symlink |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 958 | prepare3: include/config/kernel.release |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | ifneq ($(KBUILD_SRC),) |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 960 | @$(kecho) ' Using $(srctree) as source for kernel' |
Roman Zippel | c955cca | 2006-06-08 22:12:39 -0700 | [diff] [blame] | 961 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
| 963 | echo " in the '$(srctree)' directory.";\ |
| 964 | /bin/false; \ |
| 965 | fi; |
Sam Ravnborg | 7a48bdd | 2008-08-06 21:56:53 +0200 | [diff] [blame] | 966 | $(Q)if [ ! -d include2 ]; then \ |
| 967 | mkdir -p include2; \ |
Sam Ravnborg | 2e57d05 | 2008-06-22 21:42:06 +0200 | [diff] [blame] | 968 | ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \ |
Sam Ravnborg | 7a48bdd | 2008-08-06 21:56:53 +0200 | [diff] [blame] | 969 | fi |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | endif |
| 971 | |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 972 | # prepare2 creates a makefile if using a separate output directory |
| 973 | prepare2: prepare3 outputmakefile |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | |
Roman Zippel | 3eb3c74 | 2007-01-10 14:45:28 +0100 | [diff] [blame] | 975 | prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ |
| 976 | include/asm include/config/auto.conf |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 977 | $(cmd_crmodverdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 979 | archprepare: prepare1 scripts_basic |
| 980 | |
| 981 | prepare0: archprepare FORCE |
Sam Ravnborg | 8d36a62 | 2005-09-10 21:05:36 +0200 | [diff] [blame] | 982 | $(Q)$(MAKE) $(build)=. |
Sam Ravnborg | c53aeca | 2007-03-27 22:50:29 +0200 | [diff] [blame] | 983 | $(Q)$(MAKE) $(build)=. missing-syscalls |
Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 984 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | # All the preparing.. |
Robert P. J. Day | d395efb | 2007-02-14 00:33:01 -0800 | [diff] [blame] | 986 | prepare: prepare0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | |
Sam Ravnborg | fc333b2 | 2007-10-17 23:30:14 +0200 | [diff] [blame] | 988 | # The asm symlink changes when $(ARCH) changes. |
| 989 | # Detect this and ask user to run make mrproper |
Sam Ravnborg | dcc2da1 | 2008-10-25 22:58:23 +0200 | [diff] [blame] | 990 | # If asm is a stale symlink (point to dir that does not exist) remove it |
Sam Ravnborg | 2e57d05 | 2008-06-22 21:42:06 +0200 | [diff] [blame] | 991 | define check-symlink |
| 992 | set -e; \ |
| 993 | if [ -L include/asm ]; then \ |
| 994 | asmlink=`readlink include/asm | cut -d '-' -f 2`; \ |
| 995 | if [ "$$asmlink" != "$(SRCARCH)" ]; then \ |
Sam Ravnborg | fc333b2 | 2007-10-17 23:30:14 +0200 | [diff] [blame] | 996 | echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \ |
| 997 | echo " set ARCH or save .config and run 'make mrproper' to fix it"; \ |
Sam Ravnborg | 2e57d05 | 2008-06-22 21:42:06 +0200 | [diff] [blame] | 998 | exit 1; \ |
| 999 | fi; \ |
Sam Ravnborg | dcc2da1 | 2008-10-25 22:58:23 +0200 | [diff] [blame] | 1000 | test -e $$asmlink || rm include/asm; \ |
| 1001 | elif [ -d include/asm ]; then \ |
| 1002 | echo "ERROR: $@ is a directory but a symlink was expected";\ |
| 1003 | exit 1; \ |
Sam Ravnborg | fc333b2 | 2007-10-17 23:30:14 +0200 | [diff] [blame] | 1004 | fi |
Sam Ravnborg | 2e57d05 | 2008-06-22 21:42:06 +0200 | [diff] [blame] | 1005 | endef |
| 1006 | |
| 1007 | # We create the target directory of the symlink if it does |
Anisse Astier | 5a9e67b | 2009-01-06 11:32:22 +0100 | [diff] [blame] | 1008 | # not exist so the test in check-symlink works and we have a |
Sam Ravnborg | 2e57d05 | 2008-06-22 21:42:06 +0200 | [diff] [blame] | 1009 | # directory for generated filesas used by some architectures. |
| 1010 | define create-symlink |
| 1011 | if [ ! -L include/asm ]; then \ |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1012 | $(kecho) ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \ |
Sam Ravnborg | 2e57d05 | 2008-06-22 21:42:06 +0200 | [diff] [blame] | 1013 | if [ ! -d include/asm-$(SRCARCH) ]; then \ |
| 1014 | mkdir -p include/asm-$(SRCARCH); \ |
| 1015 | fi; \ |
| 1016 | ln -fsn asm-$(SRCARCH) $@; \ |
| 1017 | fi |
| 1018 | endef |
| 1019 | |
| 1020 | include/asm: FORCE |
| 1021 | $(Q)$(check-symlink) |
| 1022 | $(Q)$(create-symlink) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | # Generate some files |
| 1025 | # --------------------------------------------------------------------------- |
| 1026 | |
| 1027 | # KERNELRELEASE can change from a few different places, meaning version.h |
| 1028 | # needs to be updated, so this check is forced on all builds |
| 1029 | |
| 1030 | uts_len := 64 |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1031 | define filechk_utsrelease.h |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1033 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
| 1034 | exit 1; \ |
| 1035 | fi; \ |
| 1036 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | endef |
| 1038 | |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1039 | define filechk_version.h |
| 1040 | (echo \#define LINUX_VERSION_CODE $(shell \ |
| 1041 | expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ |
| 1042 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
| 1043 | endef |
| 1044 | |
| 1045 | include/linux/version.h: $(srctree)/Makefile FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | $(call filechk,version.h) |
| 1047 | |
Sam Ravnborg | 63104ee | 2006-07-03 23:30:54 +0200 | [diff] [blame] | 1048 | include/linux/utsrelease.h: include/config/kernel.release FORCE |
| 1049 | $(call filechk,utsrelease.h) |
| 1050 | |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 1051 | PHONY += headerdep |
| 1052 | headerdep: |
| 1053 | $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl |
| 1054 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | # --------------------------------------------------------------------------- |
| 1056 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1057 | PHONY += depend dep |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | depend dep: |
| 1059 | @echo '*** Warning: make $@ is unnecessary now.' |
| 1060 | |
| 1061 | # --------------------------------------------------------------------------- |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 1062 | # Firmware install |
| 1063 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware |
| 1064 | export INSTALL_FW_PATH |
| 1065 | |
| 1066 | PHONY += firmware_install |
| 1067 | firmware_install: FORCE |
| 1068 | @mkdir -p $(objtree)/firmware |
| 1069 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install |
| 1070 | |
| 1071 | # --------------------------------------------------------------------------- |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1072 | # Kernel headers |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1073 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 1074 | #Default location for installed headers |
| 1075 | export INSTALL_HDR_PATH = $(objtree)/usr |
| 1076 | |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 1077 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1078 | # Find out where the Kbuild file is located to support |
| 1079 | # arch/$(ARCH)/include/asm |
| 1080 | hdr-dir = $(strip \ |
| 1081 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild), \ |
| 1082 | arch/$(hdr-arch)/include/asm, include/asm-$(hdr-arch))) |
| 1083 | |
| 1084 | # If we do an all arch process set dst to asm-$(hdr-arch) |
| 1085 | 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] | 1086 | |
| 1087 | PHONY += __headers |
| 1088 | __headers: include/linux/version.h scripts_basic FORCE |
| 1089 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
David Woodhouse | 6d71627 | 2006-09-24 22:16:03 +0100 | [diff] [blame] | 1090 | |
| 1091 | PHONY += headers_install_all |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1092 | headers_install_all: |
| 1093 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
David Woodhouse | 6d71627 | 2006-09-24 22:16:03 +0100 | [diff] [blame] | 1094 | |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1095 | PHONY += headers_install |
Sam Ravnborg | e6883b1 | 2008-06-05 16:43:46 +0200 | [diff] [blame] | 1096 | headers_install: __headers |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1097 | $(if $(wildcard $(srctree)/$(hdr-dir)/Kbuild),, \ |
| 1098 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
Sam Ravnborg | 88181ec | 2008-06-09 21:24:28 +0200 | [diff] [blame] | 1099 | $(Q)$(MAKE) $(hdr-inst)=include |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1100 | $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1101 | |
Mike Frysinger | 1f85712 | 2007-02-14 00:33:02 -0800 | [diff] [blame] | 1102 | PHONY += headers_check_all |
| 1103 | headers_check_all: headers_install_all |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1104 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
Mike Frysinger | 1f85712 | 2007-02-14 00:33:02 -0800 | [diff] [blame] | 1105 | |
David Woodhouse | 6847535 | 2006-06-18 12:02:10 +0100 | [diff] [blame] | 1106 | PHONY += headers_check |
| 1107 | headers_check: headers_install |
Sam Ravnborg | 88181ec | 2008-06-09 21:24:28 +0200 | [diff] [blame] | 1108 | $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1109 | $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) HDRCHECK=1 |
David Woodhouse | 6847535 | 2006-06-18 12:02:10 +0100 | [diff] [blame] | 1110 | |
David Woodhouse | 8d730cf | 2006-06-18 11:58:39 +0100 | [diff] [blame] | 1111 | # --------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | # Modules |
| 1113 | |
| 1114 | ifdef CONFIG_MODULES |
| 1115 | |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1116 | # By default, build modules as well |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | |
| 1118 | all: modules |
| 1119 | |
| 1120 | # Build modules |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1121 | # |
| 1122 | # A module can be listed more than once in obj-m resulting in |
| 1123 | # duplicate lines in modules.order files. Those are removed |
| 1124 | # using awk while concatenating to the final file. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1126 | PHONY += modules |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1128 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1129 | @$(kecho) ' Building modules, stage 2.'; |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1130 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
David Woodhouse | 44463f7 | 2008-07-25 14:17:19 -0400 | [diff] [blame] | 1131 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | |
| 1133 | |
| 1134 | # Target to prepare building external modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1135 | PHONY += modules_prepare |
Sam Ravnborg | 5bb7826 | 2005-09-11 22:30:22 +0200 | [diff] [blame] | 1136 | modules_prepare: prepare scripts |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | |
| 1138 | # Target to install modules |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1139 | PHONY += modules_install |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | modules_install: _modinst_ _modinst_post |
| 1141 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1142 | PHONY += _modinst_ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | _modinst_: |
Tom Rini | ce454d4 | 2005-07-15 07:56:36 -0700 | [diff] [blame] | 1144 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | echo "Warning: you may need to install module-init-tools"; \ |
| 1146 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ |
| 1147 | sleep 1; \ |
| 1148 | fi |
| 1149 | @rm -rf $(MODLIB)/kernel |
| 1150 | @rm -f $(MODLIB)/source |
| 1151 | @mkdir -p $(MODLIB)/kernel |
| 1152 | @ln -s $(srctree) $(MODLIB)/source |
| 1153 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
| 1154 | rm -f $(MODLIB)/build ; \ |
| 1155 | ln -s $(objtree) $(MODLIB)/build ; \ |
| 1156 | fi |
Tejun Heo | 551559e | 2007-12-07 21:04:30 +0900 | [diff] [blame] | 1157 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1158 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1160 | # This depmod is only for convenience to give the initial |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | # boot a modules.dep even before / is mounted read-write. However the |
| 1162 | # boot script depmod is the master version. |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1163 | PHONY += _modinst_post |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | _modinst_post: _modinst_ |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 1165 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1166 | $(call cmd,depmod) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | |
| 1168 | else # CONFIG_MODULES |
| 1169 | |
| 1170 | # Modules not configured |
| 1171 | # --------------------------------------------------------------------------- |
| 1172 | |
| 1173 | modules modules_install: FORCE |
| 1174 | @echo |
| 1175 | @echo "The present kernel configuration has modules disabled." |
| 1176 | @echo "Type 'make config' and enable loadable module support." |
| 1177 | @echo "Then build a kernel with module support enabled." |
| 1178 | @echo |
| 1179 | @exit 1 |
| 1180 | |
| 1181 | endif # CONFIG_MODULES |
| 1182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | ### |
| 1184 | # Cleaning is done on three levels. |
| 1185 | # make clean Delete most generated files |
| 1186 | # Leave enough to build external modules |
| 1187 | # make mrproper Delete the current configuration, and all generated files |
| 1188 | # make distclean Remove editor backup files, patch leftover files and the like |
| 1189 | |
| 1190 | # Directories & files removed with 'make clean' |
| 1191 | CLEAN_DIRS += $(MODVERDIR) |
| 1192 | CLEAN_FILES += vmlinux System.map \ |
| 1193 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map |
| 1194 | |
| 1195 | # Directories & files removed with 'make mrproper' |
Sam Ravnborg | f14875a | 2009-04-18 23:51:08 +0200 | [diff] [blame] | 1196 | MRPROPER_DIRS += include/config include2 usr/include include/generated |
Tore Anderson | 50aa88e | 2006-01-07 15:34:40 +0100 | [diff] [blame] | 1197 | MRPROPER_FILES += .config .config.old include/asm .version .old_version \ |
Roman Zippel | 3eb3c74 | 2007-01-10 14:45:28 +0100 | [diff] [blame] | 1198 | include/linux/autoconf.h include/linux/version.h \ |
| 1199 | include/linux/utsrelease.h \ |
Jan Blunck | 7d3cc8b | 2008-05-16 13:54:59 +0200 | [diff] [blame] | 1200 | include/linux/bounds.h include/asm*/asm-offsets.h \ |
Alexey Dobriyan | c28ca3a | 2008-06-23 04:05:40 +0400 | [diff] [blame] | 1201 | Module.symvers Module.markers tags TAGS cscope* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | |
| 1203 | # clean - Delete most, but leave enough to build external modules |
| 1204 | # |
| 1205 | clean: rm-dirs := $(CLEAN_DIRS) |
| 1206 | clean: rm-files := $(CLEAN_FILES) |
Randy Dunlap | 3794f3e | 2008-08-12 15:09:06 -0700 | [diff] [blame] | 1207 | clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1209 | PHONY += $(clean-dirs) clean archclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | $(clean-dirs): |
| 1211 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| 1212 | |
| 1213 | clean: archclean $(clean-dirs) |
| 1214 | $(call cmd,rmdirs) |
| 1215 | $(call cmd,rmfiles) |
| 1216 | @find . $(RCS_FIND_IGNORE) \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1217 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 1218 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
Mathieu Desnoyers | d35cb36 | 2008-07-21 14:21:38 -0700 | [diff] [blame] | 1219 | -o -name '*.symtypes' -o -name 'modules.order' \ |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 1220 | -o -name 'Module.markers' -o -name '.tmp_*.o.*' \ |
| 1221 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | |
| 1223 | # mrproper - Delete all generated files, including .config |
| 1224 | # |
| 1225 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
| 1226 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
| 1227 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
| 1228 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1229 | PHONY += $(mrproper-dirs) mrproper archmrproper |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | $(mrproper-dirs): |
| 1231 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
| 1232 | |
| 1233 | mrproper: clean archmrproper $(mrproper-dirs) |
| 1234 | $(call cmd,rmdirs) |
| 1235 | $(call cmd,rmfiles) |
| 1236 | |
| 1237 | # distclean |
| 1238 | # |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1239 | PHONY += distclean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | |
| 1241 | distclean: mrproper |
| 1242 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1243 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1245 | -o -name '.*.rej' -o -size 0 \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
| 1247 | -type f -print | xargs rm -f |
| 1248 | |
| 1249 | |
| 1250 | # Packaging of the kernel to various formats |
| 1251 | # --------------------------------------------------------------------------- |
| 1252 | # rpm target kept for backward compatibility |
| 1253 | package-dir := $(srctree)/scripts/package |
| 1254 | |
Zach Brown | 031ecc6 | 2006-06-08 22:12:37 -0700 | [diff] [blame] | 1255 | %pkg: include/config/kernel.release FORCE |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1256 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Zach Brown | 031ecc6 | 2006-06-08 22:12:37 -0700 | [diff] [blame] | 1257 | rpm: include/config/kernel.release FORCE |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1258 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | |
| 1260 | |
| 1261 | # Brief documentation of the typical targets used |
| 1262 | # --------------------------------------------------------------------------- |
| 1263 | |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1264 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | boards := $(notdir $(boards)) |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1266 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
| 1267 | board-dirs := $(sort $(notdir $(board-dirs:/=))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | |
| 1269 | help: |
| 1270 | @echo 'Cleaning targets:' |
Samuel Tardieu | 5ea084e | 2006-12-12 19:09:40 +0100 | [diff] [blame] | 1271 | @echo ' clean - Remove most generated files but keep the config and' |
Jesper Juhl | 5cc8d24 | 2006-09-24 14:01:08 +0200 | [diff] [blame] | 1272 | @echo ' enough build support to build external modules' |
Samuel Tardieu | 5ea084e | 2006-12-12 19:09:40 +0100 | [diff] [blame] | 1273 | @echo ' mrproper - Remove all generated files + config + various backup files' |
Jesper Juhl | 5cc8d24 | 2006-09-24 14:01:08 +0200 | [diff] [blame] | 1274 | @echo ' distclean - mrproper + remove editor backup and patch files' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | @echo '' |
| 1276 | @echo 'Configuration targets:' |
| 1277 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
| 1278 | @echo '' |
| 1279 | @echo 'Other generic targets:' |
| 1280 | @echo ' all - Build all targets marked with [*]' |
| 1281 | @echo '* vmlinux - Build the bare kernel' |
| 1282 | @echo '* modules - Build all modules' |
Bodo Eggert | 9cc5d74 | 2005-11-23 20:11:34 +0100 | [diff] [blame] | 1283 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
David Woodhouse | 88ecf81 | 2008-05-29 11:01:51 +0300 | [diff] [blame] | 1284 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
| 1285 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | @echo ' dir/ - Build all files in dir and below' |
| 1287 | @echo ' dir/file.[ois] - Build specified target only' |
Sam Ravnborg | 155ad60 | 2005-07-07 17:56:08 -0700 | [diff] [blame] | 1288 | @echo ' dir/file.ko - Build module including final link' |
Robert P. J. Day | c4d5ee6 | 2009-04-24 12:35:23 -0400 | [diff] [blame] | 1289 | @echo ' modules_prepare - Set up for building external modules' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | @echo ' tags/TAGS - Generate tags file for editors' |
| 1291 | @echo ' cscope - Generate cscope index' |
Zach Brown | 6d12884 | 2005-09-07 12:08:23 -0700 | [diff] [blame] | 1292 | @echo ' kernelrelease - Output the release version string' |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 1293 | @echo ' kernelversion - Output the version stored in Makefile' |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1294 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
Geert Uytterhoeven | 59df323 | 2007-01-29 13:47:01 +0100 | [diff] [blame] | 1295 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1296 | echo '' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | @echo 'Static analysers' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | @echo ' checkstack - Generate a list of stack hogs' |
| 1299 | @echo ' namespacecheck - Name space analysis on compiled kernel' |
Sam Ravnborg | aa025e7 | 2007-11-14 21:34:55 +0100 | [diff] [blame] | 1300 | @echo ' versioncheck - Sanity check on version.h usage' |
Randy Dunlap | ec2d987 | 2007-11-04 12:01:55 -0800 | [diff] [blame] | 1301 | @echo ' includecheck - Check for duplicate included header files' |
Adrian Bunk | 295ac05 | 2007-08-24 23:04:56 +0200 | [diff] [blame] | 1302 | @echo ' export_report - List the usages of all exported symbols' |
Vegard Nossum | 179efcb | 2008-12-16 12:33:43 +0100 | [diff] [blame] | 1303 | @echo ' headers_check - Sanity check on exported headers' |
| 1304 | @echo ' headerdep - Detect inclusion cycles in headers'; \ |
Sam Ravnborg | 2fb9b1b | 2008-06-21 00:24:17 +0200 | [diff] [blame] | 1305 | echo '' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | @echo 'Kernel packaging:' |
Sam Ravnborg | 6c2133e | 2006-03-21 07:22:35 +0100 | [diff] [blame] | 1307 | @$(MAKE) $(build)=$(package-dir) help |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | @echo '' |
| 1309 | @echo 'Documentation targets:' |
| 1310 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
| 1311 | @echo '' |
Andres Salomon | 01dee18 | 2008-04-25 22:34:58 -0400 | [diff] [blame] | 1312 | @echo 'Architecture specific targets ($(SRCARCH)):' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | @$(if $(archhelp),$(archhelp),\ |
Andres Salomon | 01dee18 | 2008-04-25 22:34:58 -0400 | [diff] [blame] | 1314 | echo ' No architecture specific help defined for $(SRCARCH)') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | @echo '' |
| 1316 | @$(if $(boards), \ |
| 1317 | $(foreach b, $(boards), \ |
| 1318 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
| 1319 | echo '') |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1320 | @$(if $(board-dirs), \ |
| 1321 | $(foreach b, $(board-dirs), \ |
| 1322 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ |
| 1323 | printf " %-16s - Show all of the above\\n" help-boards; \ |
| 1324 | echo '') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | |
| 1326 | @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] | 1327 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | @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] | 1329 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
| 1330 | @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] | 1331 | @echo '' |
| 1332 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
| 1333 | @echo 'For further info see the ./README file' |
| 1334 | |
| 1335 | |
Segher Boessenkool | 5dffbe8 | 2008-04-06 22:16:07 +0200 | [diff] [blame] | 1336 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
| 1337 | |
| 1338 | help-boards: $(help-board-dirs) |
| 1339 | |
| 1340 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) |
| 1341 | |
| 1342 | $(help-board-dirs): help-%: |
| 1343 | @echo 'Architecture specific targets ($(SRCARCH) $*):' |
| 1344 | @$(if $(boards-per-dir), \ |
| 1345 | $(foreach b, $(boards-per-dir), \ |
| 1346 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ |
| 1347 | echo '') |
| 1348 | |
| 1349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | # Documentation targets |
| 1351 | # --------------------------------------------------------------------------- |
| 1352 | %docs: scripts_basic FORCE |
| 1353 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
| 1354 | |
| 1355 | else # KBUILD_EXTMOD |
| 1356 | |
| 1357 | ### |
| 1358 | # External module support. |
| 1359 | # When building external modules the kernel used as basis is considered |
| 1360 | # read-only, and no consistency checks are made and the make |
| 1361 | # system is not used on the basis kernel. If updates are required |
| 1362 | # in the basis kernel ordinary make commands (without M=...) must |
| 1363 | # be used. |
| 1364 | # |
| 1365 | # The following are the only valid targets when building external |
| 1366 | # modules. |
| 1367 | # make M=dir clean Delete all automatically generated files |
| 1368 | # make M=dir modules Make all modules in specified dir |
| 1369 | # make M=dir Same as 'make M=dir modules' |
| 1370 | # make M=dir modules_install |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1371 | # Install the modules built in the module directory |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | # Assumes install directory is already created |
| 1373 | |
| 1374 | # We are always building modules |
| 1375 | KBUILD_MODULES := 1 |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1376 | PHONY += crmodverdir |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | crmodverdir: |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1378 | $(cmd_crmodverdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1380 | PHONY += $(objtree)/Module.symvers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | $(objtree)/Module.symvers: |
| 1382 | @test -e $(objtree)/Module.symvers || ( \ |
| 1383 | echo; \ |
| 1384 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
| 1385 | echo " is missing; modules will have no dependencies and modversions."; \ |
| 1386 | echo ) |
| 1387 | |
| 1388 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1389 | PHONY += $(module-dirs) modules |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
| 1391 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
| 1392 | |
| 1393 | modules: $(module-dirs) |
Mike Frysinger | fd54f50 | 2008-11-06 03:31:35 -0500 | [diff] [blame] | 1394 | @$(kecho) ' Building modules, stage 2.'; |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1395 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1397 | PHONY += modules_install |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1398 | modules_install: _emodinst_ _emodinst_post |
Adrian Bunk | e630466 | 2006-02-14 15:58:15 +0100 | [diff] [blame] | 1399 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1400 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
| 1401 | PHONY += _emodinst_ |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1402 | _emodinst_: |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1403 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1404 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1406 | PHONY += _emodinst_post |
Sam Ravnborg | a67dc21 | 2006-01-28 23:51:57 +0100 | [diff] [blame] | 1407 | _emodinst_post: _emodinst_ |
| 1408 | $(call cmd,depmod) |
| 1409 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
| 1411 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1412 | PHONY += $(clean-dirs) clean |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | $(clean-dirs): |
| 1414 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| 1415 | |
| 1416 | clean: rm-dirs := $(MODVERDIR) |
Frédéric Brière | 0c56042 | 2009-04-19 12:58:40 -0400 | [diff] [blame] | 1417 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \ |
| 1418 | $(KBUILD_EXTMOD)/Module.markers \ |
| 1419 | $(KBUILD_EXTMOD)/modules.order |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | clean: $(clean-dirs) |
| 1421 | $(call cmd,rmdirs) |
Mike Frysinger | c34114f | 2007-07-31 19:45:34 -0400 | [diff] [blame] | 1422 | $(call cmd,rmfiles) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ |
Sam Ravnborg | 070b98b | 2006-06-25 00:07:55 +0200 | [diff] [blame] | 1424 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
Peter Oberparleiter | 2521f2c | 2009-06-17 16:28:08 -0700 | [diff] [blame] | 1425 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
| 1426 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | |
| 1428 | help: |
| 1429 | @echo ' Building external modules.' |
| 1430 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
| 1431 | @echo '' |
| 1432 | @echo ' modules - default target, build the module(s)' |
| 1433 | @echo ' modules_install - install the module' |
| 1434 | @echo ' clean - remove generated files in module directory only' |
| 1435 | @echo '' |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1436 | |
| 1437 | # Dummies... |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1438 | PHONY += prepare scripts |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1439 | prepare: ; |
| 1440 | scripts: ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | endif # KBUILD_EXTMOD |
| 1442 | |
| 1443 | # Generate tags for editors |
| 1444 | # --------------------------------------------------------------------------- |
Sam Ravnborg | a680eed | 2008-12-03 22:24:13 +0100 | [diff] [blame] | 1445 | quiet_cmd_tags = GEN $@ |
| 1446 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | |
Sam Ravnborg | a680eed | 2008-12-03 22:24:13 +0100 | [diff] [blame] | 1448 | tags TAGS cscope: FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | $(call cmd,tags) |
| 1450 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | # Scripts to check various things for consistency |
| 1452 | # --------------------------------------------------------------------------- |
| 1453 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | includecheck: |
| 1455 | find * $(RCS_FIND_IGNORE) \ |
| 1456 | -name '*.[hcS]' -type f -print | sort \ |
Geert Uytterhoeven | 8000743 | 2007-11-05 11:51:44 +0100 | [diff] [blame] | 1457 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | |
| 1459 | versioncheck: |
| 1460 | find * $(RCS_FIND_IGNORE) \ |
| 1461 | -name '*.[hcS]' -type f -print | sort \ |
Geert Uytterhoeven | 8000743 | 2007-11-05 11:51:44 +0100 | [diff] [blame] | 1462 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | namespacecheck: |
| 1465 | $(PERL) $(srctree)/scripts/namespace.pl |
| 1466 | |
Adrian Bunk | 295ac05 | 2007-08-24 23:04:56 +0200 | [diff] [blame] | 1467 | export_report: |
| 1468 | $(PERL) $(srctree)/scripts/export_report.pl |
| 1469 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | endif #ifeq ($(config-targets),1) |
| 1471 | endif #ifeq ($(mixed-targets),1) |
| 1472 | |
Roman Zippel | c30a02e | 2006-06-08 22:12:50 -0700 | [diff] [blame] | 1473 | PHONY += checkstack kernelrelease kernelversion |
Jeff Dike | e3ccf6e | 2006-09-27 01:50:37 -0700 | [diff] [blame] | 1474 | |
Jeff Dike | 011e3a9 | 2006-12-13 00:34:12 -0800 | [diff] [blame] | 1475 | # UML needs a little special treatment here. It wants to use the host |
| 1476 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone |
| 1477 | # else wants $(ARCH), including people doing cross-builds, which means |
| 1478 | # that $(SUBARCH) doesn't work here. |
| 1479 | ifeq ($(ARCH), um) |
| 1480 | CHECKSTACK_ARCH := $(SUBARCH) |
| 1481 | else |
| 1482 | CHECKSTACK_ARCH := $(ARCH) |
| 1483 | endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | checkstack: |
| 1485 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
Jeff Dike | 011e3a9 | 2006-12-13 00:34:12 -0800 | [diff] [blame] | 1486 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | |
| 1488 | kernelrelease: |
Roman Zippel | f1d28fb | 2006-06-08 22:12:43 -0700 | [diff] [blame] | 1489 | $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ |
| 1490 | $(error kernelrelease not valid - run 'make prepare' to update it)) |
Sam Ravnborg | cb58455 | 2006-01-09 21:20:34 +0100 | [diff] [blame] | 1491 | kernelversion: |
Sam Ravnborg | 2244cbd | 2006-01-16 12:12:12 +0100 | [diff] [blame] | 1492 | @echo $(KERNELVERSION) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1494 | # Single targets |
| 1495 | # --------------------------------------------------------------------------- |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1496 | # Single targets are compatible with: |
Robert P. J. Day | e1b8513 | 2008-02-03 15:14:02 +0200 | [diff] [blame] | 1497 | # - build with mixed source and output |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1498 | # - build with separate output dir 'make O=...' |
| 1499 | # - external modules |
| 1500 | # |
| 1501 | # target-dir => where to store outputfile |
| 1502 | # build-dir => directory in kernel source tree to use |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1503 | |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1504 | ifeq ($(KBUILD_EXTMOD),) |
Sam Ravnborg | aa36087 | 2006-04-06 08:25:31 +0200 | [diff] [blame] | 1505 | build-dir = $(patsubst %/,%,$(dir $@)) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1506 | target-dir = $(dir $@) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1507 | else |
| 1508 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1509 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
| 1510 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1511 | endif |
| 1512 | |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1513 | %.s: %.c prepare scripts FORCE |
| 1514 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1515 | %.i: %.c prepare scripts FORCE |
| 1516 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1517 | %.o: %.c prepare scripts FORCE |
| 1518 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1519 | %.lst: %.c prepare scripts FORCE |
| 1520 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1521 | %.s: %.S prepare scripts FORCE |
| 1522 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 1523 | %.o: %.S prepare scripts FORCE |
| 1524 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Andreas Gruenbacher | 15fde67 | 2006-05-09 20:37:30 +0200 | [diff] [blame] | 1525 | %.symtypes: %.c prepare scripts FORCE |
| 1526 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1527 | |
| 1528 | # Modules |
Sam Ravnborg | 31110eb | 2008-12-13 23:00:45 +0100 | [diff] [blame] | 1529 | /: prepare scripts FORCE |
| 1530 | $(cmd_crmodverdir) |
| 1531 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
| 1532 | $(build)=$(build-dir) |
| 1533 | %/: prepare scripts FORCE |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1534 | $(cmd_crmodverdir) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1535 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1536 | $(build)=$(build-dir) |
| 1537 | %.ko: prepare scripts FORCE |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1538 | $(cmd_crmodverdir) |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1539 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
Sam Ravnborg | bc2546a | 2006-04-05 12:57:21 +0200 | [diff] [blame] | 1540 | $(build)=$(build-dir) $(@:.ko=.o) |
Sam Ravnborg | b805aa0 | 2006-08-08 21:36:08 +0200 | [diff] [blame] | 1541 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
Sam Ravnborg | 06300b2 | 2006-01-25 07:13:18 +0100 | [diff] [blame] | 1542 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | # FIXME Should go into a make.lib or something |
| 1544 | # =========================================================================== |
| 1545 | |
| 1546 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
| 1547 | cmd_rmdirs = rm -rf $(rm-dirs) |
| 1548 | |
| 1549 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
| 1550 | cmd_rmfiles = rm -f $(rm-files) |
| 1551 | |
Uwe Kleine-König | bc3c26f | 2008-04-21 22:53:56 +0000 | [diff] [blame] | 1552 | # Run depmod only if we have System.map and depmod is executable |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1553 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
| 1554 | cmd_depmod = \ |
Sam Ravnborg | d8d2e78 | 2007-10-22 11:30:45 +0200 | [diff] [blame] | 1555 | if [ -r System.map -a -x $(DEPMOD) ]; then \ |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1556 | $(DEPMOD) -ae -F System.map \ |
Gilles Espinasse | 75bccd88 | 2009-03-07 13:57:25 +0100 | [diff] [blame] | 1557 | $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ |
Sam Ravnborg | 50a8ec3 | 2007-10-18 21:24:21 +0200 | [diff] [blame] | 1558 | $(KERNELRELEASE); \ |
| 1559 | fi |
| 1560 | |
Sam Ravnborg | 7bb9d09 | 2007-10-19 22:20:02 +0200 | [diff] [blame] | 1561 | # Create temporary dir for module support files |
Sam Ravnborg | ab19f87 | 2007-10-22 11:23:07 +0200 | [diff] [blame] | 1562 | # clean it up only when building all modules |
| 1563 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ |
| 1564 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | |
Sam Ravnborg | 222d394 | 2007-10-15 21:59:31 +0200 | [diff] [blame] | 1566 | a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ |
Sam Ravnborg | d8672b4 | 2008-11-21 21:50:02 +0100 | [diff] [blame] | 1567 | $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ |
Sam Ravnborg | 5e8d780 | 2006-07-01 09:58:02 +0200 | [diff] [blame] | 1568 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | |
| 1570 | quiet_cmd_as_o_S = AS $@ |
| 1571 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< |
| 1572 | |
| 1573 | # read all saved command lines |
| 1574 | |
| 1575 | targets := $(wildcard $(sort $(targets))) |
| 1576 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
| 1577 | |
| 1578 | ifneq ($(cmd_files),) |
| 1579 | $(cmd_files): ; # Do not try to update included dependency files |
| 1580 | include $(cmd_files) |
| 1581 | endif |
| 1582 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
| 1584 | # Usage: |
| 1585 | # $(Q)$(MAKE) $(clean)=dir |
| 1586 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
| 1587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | endif # skip-makefile |
| 1589 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1590 | PHONY += FORCE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | FORCE: |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1592 | |
Paul Smith | 4f19336 | 2006-03-05 17:14:10 -0500 | [diff] [blame] | 1593 | # Declare the contents of the .PHONY variable as phony. We keep that |
Kirill Smelkov | fe8d0a4 | 2009-04-09 15:34:34 +0400 | [diff] [blame] | 1594 | # 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] | 1595 | .PHONY: $(PHONY) |