Eric Lee / smarc-ti-linux-kernel

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Commit b0807bc10a6ac95ab8bf3bbf57703a0f2edd9aa9

Authored by Jiri Slaby
1 parent 99ed1bd0c7
Exists in ti-linux-3.12.y and in 2 other branches newt-ti-linux-3.12.y, smarc-ti-linux-3.12.y

Linux 3.12.30

Showing 1 changed file with 1 additions and 1 deletions Inline Diff

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