Eric Lee / smarc-ti-linux-kernel

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Commit 26bc420b59a38e4e6685a73345a0def461136dce

Authored by Linus Torvalds
1 parent 14746306af
Exists in ti-lsk-linux-4.1.y and in 10 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-02.00.01, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04

Linux 3.19-rc6

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

1 VERSION = 3 1 VERSION = 3
2 PATCHLEVEL = 19 2 PATCHLEVEL = 19
3 SUBLEVEL = 0 3 SUBLEVEL = 0
4 EXTRAVERSION = -rc5 4 EXTRAVERSION = -rc6
5 NAME = Diseased Newt 5 NAME = Diseased Newt
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 use make's built-in rules and variables 13 # Do not use make's built-in rules and variables
14 # (this increases performance and avoids hard-to-debug behaviour); 14 # (this increases performance and avoids hard-to-debug behaviour);
15 MAKEFLAGS += -rR 15 MAKEFLAGS += -rR
16 16
17 # Avoid funny character set dependencies 17 # Avoid funny character set dependencies
18 unexport LC_ALL 18 unexport LC_ALL
19 LC_COLLATE=C 19 LC_COLLATE=C
20 LC_NUMERIC=C 20 LC_NUMERIC=C
21 export LC_COLLATE LC_NUMERIC 21 export LC_COLLATE LC_NUMERIC
22 22
23 # Avoid interference with shell env settings 23 # Avoid interference with shell env settings
24 unexport GREP_OPTIONS 24 unexport GREP_OPTIONS
25 25
26 # We are using a recursive build, so we need to do a little thinking 26 # We are using a recursive build, so we need to do a little thinking
27 # to get the ordering right. 27 # to get the ordering right.
28 # 28 #
29 # Most importantly: sub-Makefiles should only ever modify files in 29 # Most importantly: sub-Makefiles should only ever modify files in
30 # their own directory. If in some directory we have a dependency on 30 # their own directory. If in some directory we have a dependency on
31 # a file in another dir (which doesn't happen often, but it's often 31 # a file in another dir (which doesn't happen often, but it's often
32 # unavoidable when linking the built-in.o targets which finally 32 # unavoidable when linking the built-in.o targets which finally
33 # turn into vmlinux), we will call a sub make in that other dir, and 33 # turn into vmlinux), we will call a sub make in that other dir, and
34 # after that we are sure that everything which is in that other dir 34 # after that we are sure that everything which is in that other dir
35 # is now up to date. 35 # is now up to date.
36 # 36 #
37 # The only cases where we need to modify files which have global 37 # The only cases where we need to modify files which have global
38 # effects are thus separated out and done before the recursive 38 # effects are thus separated out and done before the recursive
39 # descending is started. They are now explicitly listed as the 39 # descending is started. They are now explicitly listed as the
40 # prepare rule. 40 # prepare rule.
41 41
42 # Beautify output 42 # Beautify output
43 # --------------------------------------------------------------------------- 43 # ---------------------------------------------------------------------------
44 # 44 #
45 # Normally, we echo the whole command before executing it. By making 45 # Normally, we echo the whole command before executing it. By making
46 # that echo $($(quiet)$(cmd)), we now have the possibility to set 46 # that echo $($(quiet)$(cmd)), we now have the possibility to set
47 # $(quiet) to choose other forms of output instead, e.g. 47 # $(quiet) to choose other forms of output instead, e.g.
48 # 48 #
49 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 49 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
50 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 50 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
51 # 51 #
52 # If $(quiet) is empty, the whole command will be printed. 52 # If $(quiet) is empty, the whole command will be printed.
53 # If it is set to "quiet_", only the short version will be printed. 53 # If it is set to "quiet_", only the short version will be printed.
54 # If it is set to "silent_", nothing will be printed at all, since 54 # If it is set to "silent_", nothing will be printed at all, since
55 # the variable $(silent_cmd_cc_o_c) doesn't exist. 55 # the variable $(silent_cmd_cc_o_c) doesn't exist.
56 # 56 #
57 # A simple variant is to prefix commands with $(Q) - that's useful 57 # A simple variant is to prefix commands with $(Q) - that's useful
58 # for commands that shall be hidden in non-verbose mode. 58 # for commands that shall be hidden in non-verbose mode.
59 # 59 #
60 # $(Q)ln $@ :< 60 # $(Q)ln $@ :<
61 # 61 #
62 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 62 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
63 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 63 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
64 # 64 #
65 # To put more focus on warnings, be less verbose as default 65 # To put more focus on warnings, be less verbose as default
66 # Use 'make V=1' to see the full commands 66 # Use 'make V=1' to see the full commands
67 67
68 ifeq ("$(origin V)", "command line") 68 ifeq ("$(origin V)", "command line")
69 KBUILD_VERBOSE = $(V) 69 KBUILD_VERBOSE = $(V)
70 endif 70 endif
71 ifndef KBUILD_VERBOSE 71 ifndef KBUILD_VERBOSE
72 KBUILD_VERBOSE = 0 72 KBUILD_VERBOSE = 0
73 endif 73 endif
74 74
75 ifeq ($(KBUILD_VERBOSE),1) 75 ifeq ($(KBUILD_VERBOSE),1)
76 quiet = 76 quiet =
77 Q = 77 Q =
78 else 78 else
79 quiet=quiet_ 79 quiet=quiet_
80 Q = @ 80 Q = @
81 endif 81 endif
82 82
83 # If the user is running make -s (silent mode), suppress echoing of 83 # If the user is running make -s (silent mode), suppress echoing of
84 # commands 84 # commands
85 85
86 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 86 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
87 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 87 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
88 quiet=silent_ 88 quiet=silent_
89 endif 89 endif
90 else # make-3.8x 90 else # make-3.8x
91 ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 91 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
92 quiet=silent_ 92 quiet=silent_
93 endif 93 endif
94 endif 94 endif
95 95
96 export quiet Q KBUILD_VERBOSE 96 export quiet Q KBUILD_VERBOSE
97 97
98 # kbuild supports saving output files in a separate directory. 98 # kbuild supports saving output files in a separate directory.
99 # To locate output files in a separate directory two syntaxes are supported. 99 # To locate output files in a separate directory two syntaxes are supported.
100 # In both cases the working directory must be the root of the kernel src. 100 # In both cases the working directory must be the root of the kernel src.
101 # 1) O= 101 # 1) O=
102 # Use "make O=dir/to/store/output/files/" 102 # Use "make O=dir/to/store/output/files/"
103 # 103 #
104 # 2) Set KBUILD_OUTPUT 104 # 2) Set KBUILD_OUTPUT
105 # Set the environment variable KBUILD_OUTPUT to point to the directory 105 # Set the environment variable KBUILD_OUTPUT to point to the directory
106 # where the output files shall be placed. 106 # where the output files shall be placed.
107 # export KBUILD_OUTPUT=dir/to/store/output/files/ 107 # export KBUILD_OUTPUT=dir/to/store/output/files/
108 # make 108 # make
109 # 109 #
110 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 110 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
111 # variable. 111 # variable.
112 112
113 # KBUILD_SRC is set on invocation of make in OBJ directory 113 # KBUILD_SRC is set on invocation of make in OBJ directory
114 # KBUILD_SRC is not intended to be used by the regular user (for now) 114 # KBUILD_SRC is not intended to be used by the regular user (for now)
115 ifeq ($(KBUILD_SRC),) 115 ifeq ($(KBUILD_SRC),)
116 116
117 # OK, Make called in directory where kernel src resides 117 # OK, Make called in directory where kernel src resides
118 # Do we want to locate output files in a separate directory? 118 # Do we want to locate output files in a separate directory?
119 ifeq ("$(origin O)", "command line") 119 ifeq ("$(origin O)", "command line")
120 KBUILD_OUTPUT := $(O) 120 KBUILD_OUTPUT := $(O)
121 endif 121 endif
122 122
123 # That's our default target when none is given on the command line 123 # That's our default target when none is given on the command line
124 PHONY := _all 124 PHONY := _all
125 _all: 125 _all:
126 126
127 # Cancel implicit rules on top Makefile 127 # Cancel implicit rules on top Makefile
128 $(CURDIR)/Makefile Makefile: ; 128 $(CURDIR)/Makefile Makefile: ;
129 129
130 ifneq ($(KBUILD_OUTPUT),) 130 ifneq ($(KBUILD_OUTPUT),)
131 # Invoke a second make in the output directory, passing relevant variables 131 # Invoke a second make in the output directory, passing relevant variables
132 # check that the output directory actually exists 132 # check that the output directory actually exists
133 saved-output := $(KBUILD_OUTPUT) 133 saved-output := $(KBUILD_OUTPUT)
134 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 134 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
135 && /bin/pwd) 135 && /bin/pwd)
136 $(if $(KBUILD_OUTPUT),, \ 136 $(if $(KBUILD_OUTPUT),, \
137 $(error failed to create output directory "$(saved-output)")) 137 $(error failed to create output directory "$(saved-output)"))
138 138
139 PHONY += $(MAKECMDGOALS) sub-make 139 PHONY += $(MAKECMDGOALS) sub-make
140 140
141 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 141 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
142 @: 142 @:
143 143
144 sub-make: FORCE 144 sub-make: FORCE
145 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 145 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
146 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 146 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
147 147
148 # Leave processing to above invocation of make 148 # Leave processing to above invocation of make
149 skip-makefile := 1 149 skip-makefile := 1
150 endif # ifneq ($(KBUILD_OUTPUT),) 150 endif # ifneq ($(KBUILD_OUTPUT),)
151 endif # ifeq ($(KBUILD_SRC),) 151 endif # ifeq ($(KBUILD_SRC),)
152 152
153 # We process the rest of the Makefile if this is the final invocation of make 153 # We process the rest of the Makefile if this is the final invocation of make
154 ifeq ($(skip-makefile),) 154 ifeq ($(skip-makefile),)
155 155
156 # Do not print "Entering directory ...", 156 # Do not print "Entering directory ...",
157 # but we want to display it when entering to the output directory 157 # but we want to display it when entering to the output directory
158 # so that IDEs/editors are able to understand relative filenames. 158 # so that IDEs/editors are able to understand relative filenames.
159 MAKEFLAGS += --no-print-directory 159 MAKEFLAGS += --no-print-directory
160 160
161 # Call a source code checker (by default, "sparse") as part of the 161 # Call a source code checker (by default, "sparse") as part of the
162 # C compilation. 162 # C compilation.
163 # 163 #
164 # Use 'make C=1' to enable checking of only re-compiled files. 164 # Use 'make C=1' to enable checking of only re-compiled files.
165 # Use 'make C=2' to enable checking of *all* source files, regardless 165 # Use 'make C=2' to enable checking of *all* source files, regardless
166 # of whether they are re-compiled or not. 166 # of whether they are re-compiled or not.
167 # 167 #
168 # See the file "Documentation/sparse.txt" for more details, including 168 # See the file "Documentation/sparse.txt" for more details, including
169 # where to get the "sparse" utility. 169 # where to get the "sparse" utility.
170 170
171 ifeq ("$(origin C)", "command line") 171 ifeq ("$(origin C)", "command line")
172 KBUILD_CHECKSRC = $(C) 172 KBUILD_CHECKSRC = $(C)
173 endif 173 endif
174 ifndef KBUILD_CHECKSRC 174 ifndef KBUILD_CHECKSRC
175 KBUILD_CHECKSRC = 0 175 KBUILD_CHECKSRC = 0
176 endif 176 endif
177 177
178 # Use make M=dir to specify directory of external module to build 178 # Use make M=dir to specify directory of external module to build
179 # Old syntax make ... SUBDIRS=$PWD is still supported 179 # Old syntax make ... SUBDIRS=$PWD is still supported
180 # Setting the environment variable KBUILD_EXTMOD take precedence 180 # Setting the environment variable KBUILD_EXTMOD take precedence
181 ifdef SUBDIRS 181 ifdef SUBDIRS
182 KBUILD_EXTMOD ?= $(SUBDIRS) 182 KBUILD_EXTMOD ?= $(SUBDIRS)
183 endif 183 endif
184 184
185 ifeq ("$(origin M)", "command line") 185 ifeq ("$(origin M)", "command line")
186 KBUILD_EXTMOD := $(M) 186 KBUILD_EXTMOD := $(M)
187 endif 187 endif
188 188
189 # If building an external module we do not care about the all: rule 189 # If building an external module we do not care about the all: rule
190 # but instead _all depend on modules 190 # but instead _all depend on modules
191 PHONY += all 191 PHONY += all
192 ifeq ($(KBUILD_EXTMOD),) 192 ifeq ($(KBUILD_EXTMOD),)
193 _all: all 193 _all: all
194 else 194 else
195 _all: modules 195 _all: modules
196 endif 196 endif
197 197
198 ifeq ($(KBUILD_SRC),) 198 ifeq ($(KBUILD_SRC),)
199 # building in the source tree 199 # building in the source tree
200 srctree := . 200 srctree := .
201 else 201 else
202 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 202 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
203 # building in a subdirectory of the source tree 203 # building in a subdirectory of the source tree
204 srctree := .. 204 srctree := ..
205 else 205 else
206 srctree := $(KBUILD_SRC) 206 srctree := $(KBUILD_SRC)
207 endif 207 endif
208 endif 208 endif
209 objtree := . 209 objtree := .
210 src := $(srctree) 210 src := $(srctree)
211 obj := $(objtree) 211 obj := $(objtree)
212 212
213 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 213 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
214 214
215 export srctree objtree VPATH 215 export srctree objtree VPATH
216 216
217 217
218 # SUBARCH tells the usermode build what the underlying arch is. That is set 218 # SUBARCH tells the usermode build what the underlying arch is. That is set
219 # first, and if a usermode build is happening, the "ARCH=um" on the command 219 # first, and if a usermode build is happening, the "ARCH=um" on the command
220 # line overrides the setting of ARCH below. If a native build is happening, 220 # line overrides the setting of ARCH below. If a native build is happening,
221 # then ARCH is assigned, getting whatever value it gets normally, and 221 # then ARCH is assigned, getting whatever value it gets normally, and
222 # SUBARCH is subsequently ignored. 222 # SUBARCH is subsequently ignored.
223 223
224 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 224 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
225 -e s/sun4u/sparc64/ \ 225 -e s/sun4u/sparc64/ \
226 -e s/arm.*/arm/ -e s/sa110/arm/ \ 226 -e s/arm.*/arm/ -e s/sa110/arm/ \
227 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 227 -e s/s390x/s390/ -e s/parisc64/parisc/ \
228 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 228 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
229 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) 229 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
230 230
231 # Cross compiling and selecting different set of gcc/bin-utils 231 # Cross compiling and selecting different set of gcc/bin-utils
232 # --------------------------------------------------------------------------- 232 # ---------------------------------------------------------------------------
233 # 233 #
234 # When performing cross compilation for other architectures ARCH shall be set 234 # When performing cross compilation for other architectures ARCH shall be set
235 # to the target architecture. (See arch/* for the possibilities). 235 # to the target architecture. (See arch/* for the possibilities).
236 # ARCH can be set during invocation of make: 236 # ARCH can be set during invocation of make:
237 # make ARCH=ia64 237 # make ARCH=ia64
238 # Another way is to have ARCH set in the environment. 238 # Another way is to have ARCH set in the environment.
239 # The default ARCH is the host where make is executed. 239 # The default ARCH is the host where make is executed.
240 240
241 # CROSS_COMPILE specify the prefix used for all executables used 241 # CROSS_COMPILE specify the prefix used for all executables used
242 # during compilation. Only gcc and related bin-utils executables 242 # during compilation. Only gcc and related bin-utils executables
243 # are prefixed with $(CROSS_COMPILE). 243 # are prefixed with $(CROSS_COMPILE).
244 # CROSS_COMPILE can be set on the command line 244 # CROSS_COMPILE can be set on the command line
245 # make CROSS_COMPILE=ia64-linux- 245 # make CROSS_COMPILE=ia64-linux-
246 # Alternatively CROSS_COMPILE can be set in the environment. 246 # Alternatively CROSS_COMPILE can be set in the environment.
247 # A third alternative is to store a setting in .config so that plain 247 # A third alternative is to store a setting in .config so that plain
248 # "make" in the configured kernel build directory always uses that. 248 # "make" in the configured kernel build directory always uses that.
249 # Default value for CROSS_COMPILE is not to prefix executables 249 # Default value for CROSS_COMPILE is not to prefix executables
250 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 250 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
251 ARCH ?= $(SUBARCH) 251 ARCH ?= $(SUBARCH)
252 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 252 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
253 253
254 # Architecture as present in compile.h 254 # Architecture as present in compile.h
255 UTS_MACHINE := $(ARCH) 255 UTS_MACHINE := $(ARCH)
256 SRCARCH := $(ARCH) 256 SRCARCH := $(ARCH)
257 257
258 # Additional ARCH settings for x86 258 # Additional ARCH settings for x86
259 ifeq ($(ARCH),i386) 259 ifeq ($(ARCH),i386)
260 SRCARCH := x86 260 SRCARCH := x86
261 endif 261 endif
262 ifeq ($(ARCH),x86_64) 262 ifeq ($(ARCH),x86_64)
263 SRCARCH := x86 263 SRCARCH := x86
264 endif 264 endif
265 265
266 # Additional ARCH settings for sparc 266 # Additional ARCH settings for sparc
267 ifeq ($(ARCH),sparc32) 267 ifeq ($(ARCH),sparc32)
268 SRCARCH := sparc 268 SRCARCH := sparc
269 endif 269 endif
270 ifeq ($(ARCH),sparc64) 270 ifeq ($(ARCH),sparc64)
271 SRCARCH := sparc 271 SRCARCH := sparc
272 endif 272 endif
273 273
274 # Additional ARCH settings for sh 274 # Additional ARCH settings for sh
275 ifeq ($(ARCH),sh64) 275 ifeq ($(ARCH),sh64)
276 SRCARCH := sh 276 SRCARCH := sh
277 endif 277 endif
278 278
279 # Additional ARCH settings for tile 279 # Additional ARCH settings for tile
280 ifeq ($(ARCH),tilepro) 280 ifeq ($(ARCH),tilepro)
281 SRCARCH := tile 281 SRCARCH := tile
282 endif 282 endif
283 ifeq ($(ARCH),tilegx) 283 ifeq ($(ARCH),tilegx)
284 SRCARCH := tile 284 SRCARCH := tile
285 endif 285 endif
286 286
287 # Where to locate arch specific headers 287 # Where to locate arch specific headers
288 hdr-arch := $(SRCARCH) 288 hdr-arch := $(SRCARCH)
289 289
290 KCONFIG_CONFIG ?= .config 290 KCONFIG_CONFIG ?= .config
291 export KCONFIG_CONFIG 291 export KCONFIG_CONFIG
292 292
293 # SHELL used by kbuild 293 # SHELL used by kbuild
294 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 294 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
295 else if [ -x /bin/bash ]; then echo /bin/bash; \ 295 else if [ -x /bin/bash ]; then echo /bin/bash; \
296 else echo sh; fi ; fi) 296 else echo sh; fi ; fi)
297 297
298 HOSTCC = gcc 298 HOSTCC = gcc
299 HOSTCXX = g++ 299 HOSTCXX = g++
300 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 300 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89
301 HOSTCXXFLAGS = -O2 301 HOSTCXXFLAGS = -O2
302 302
303 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) 303 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
304 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ 304 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
305 -Wno-missing-field-initializers -fno-delete-null-pointer-checks 305 -Wno-missing-field-initializers -fno-delete-null-pointer-checks
306 endif 306 endif
307 307
308 # Decide whether to build built-in, modular, or both. 308 # Decide whether to build built-in, modular, or both.
309 # Normally, just do built-in. 309 # Normally, just do built-in.
310 310
311 KBUILD_MODULES := 311 KBUILD_MODULES :=
312 KBUILD_BUILTIN := 1 312 KBUILD_BUILTIN := 1
313 313
314 # If we have only "make modules", don't compile built-in objects. 314 # If we have only "make modules", don't compile built-in objects.
315 # When we're building modules with modversions, we need to consider 315 # When we're building modules with modversions, we need to consider
316 # the built-in objects during the descend as well, in order to 316 # the built-in objects during the descend as well, in order to
317 # make sure the checksums are up to date before we record them. 317 # make sure the checksums are up to date before we record them.
318 318
319 ifeq ($(MAKECMDGOALS),modules) 319 ifeq ($(MAKECMDGOALS),modules)
320 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 320 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
321 endif 321 endif
322 322
323 # If we have "make <whatever> modules", compile modules 323 # If we have "make <whatever> modules", compile modules
324 # in addition to whatever we do anyway. 324 # in addition to whatever we do anyway.
325 # Just "make" or "make all" shall build modules as well 325 # Just "make" or "make all" shall build modules as well
326 326
327 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 327 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
328 KBUILD_MODULES := 1 328 KBUILD_MODULES := 1
329 endif 329 endif
330 330
331 ifeq ($(MAKECMDGOALS),) 331 ifeq ($(MAKECMDGOALS),)
332 KBUILD_MODULES := 1 332 KBUILD_MODULES := 1
333 endif 333 endif
334 334
335 export KBUILD_MODULES KBUILD_BUILTIN 335 export KBUILD_MODULES KBUILD_BUILTIN
336 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 336 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
337 337
338 ifneq ($(CC),) 338 ifneq ($(CC),)
339 ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1) 339 ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
340 COMPILER := clang 340 COMPILER := clang
341 else 341 else
342 COMPILER := gcc 342 COMPILER := gcc
343 endif 343 endif
344 export COMPILER 344 export COMPILER
345 endif 345 endif
346 346
347 # Look for make include files relative to root of kernel src 347 # Look for make include files relative to root of kernel src
348 MAKEFLAGS += --include-dir=$(srctree) 348 MAKEFLAGS += --include-dir=$(srctree)
349 349
350 # We need some generic definitions (do not try to remake the file). 350 # We need some generic definitions (do not try to remake the file).
351 $(srctree)/scripts/Kbuild.include: ; 351 $(srctree)/scripts/Kbuild.include: ;
352 include $(srctree)/scripts/Kbuild.include 352 include $(srctree)/scripts/Kbuild.include
353 353
354 # Make variables (CC, etc...) 354 # Make variables (CC, etc...)
355 AS = $(CROSS_COMPILE)as 355 AS = $(CROSS_COMPILE)as
356 LD = $(CROSS_COMPILE)ld 356 LD = $(CROSS_COMPILE)ld
357 CC = $(CROSS_COMPILE)gcc 357 CC = $(CROSS_COMPILE)gcc
358 CPP = $(CC) -E 358 CPP = $(CC) -E
359 AR = $(CROSS_COMPILE)ar 359 AR = $(CROSS_COMPILE)ar
360 NM = $(CROSS_COMPILE)nm 360 NM = $(CROSS_COMPILE)nm
361 STRIP = $(CROSS_COMPILE)strip 361 STRIP = $(CROSS_COMPILE)strip
362 OBJCOPY = $(CROSS_COMPILE)objcopy 362 OBJCOPY = $(CROSS_COMPILE)objcopy
363 OBJDUMP = $(CROSS_COMPILE)objdump 363 OBJDUMP = $(CROSS_COMPILE)objdump
364 AWK = awk 364 AWK = awk
365 GENKSYMS = scripts/genksyms/genksyms 365 GENKSYMS = scripts/genksyms/genksyms
366 INSTALLKERNEL := installkernel 366 INSTALLKERNEL := installkernel
367 DEPMOD = /sbin/depmod 367 DEPMOD = /sbin/depmod
368 PERL = perl 368 PERL = perl
369 PYTHON = python 369 PYTHON = python
370 CHECK = sparse 370 CHECK = sparse
371 371
372 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 372 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
373 -Wbitwise -Wno-return-void $(CF) 373 -Wbitwise -Wno-return-void $(CF)
374 CFLAGS_MODULE = 374 CFLAGS_MODULE =
375 AFLAGS_MODULE = 375 AFLAGS_MODULE =
376 LDFLAGS_MODULE = 376 LDFLAGS_MODULE =
377 CFLAGS_KERNEL = 377 CFLAGS_KERNEL =
378 AFLAGS_KERNEL = 378 AFLAGS_KERNEL =
379 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage 379 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
380 380
381 381
382 # Use USERINCLUDE when you must reference the UAPI directories only. 382 # Use USERINCLUDE when you must reference the UAPI directories only.
383 USERINCLUDE := \ 383 USERINCLUDE := \
384 -I$(srctree)/arch/$(hdr-arch)/include/uapi \ 384 -I$(srctree)/arch/$(hdr-arch)/include/uapi \
385 -Iarch/$(hdr-arch)/include/generated/uapi \ 385 -Iarch/$(hdr-arch)/include/generated/uapi \
386 -I$(srctree)/include/uapi \ 386 -I$(srctree)/include/uapi \
387 -Iinclude/generated/uapi \ 387 -Iinclude/generated/uapi \
388 -include $(srctree)/include/linux/kconfig.h 388 -include $(srctree)/include/linux/kconfig.h
389 389
390 # Use LINUXINCLUDE when you must reference the include/ directory. 390 # Use LINUXINCLUDE when you must reference the include/ directory.
391 # Needed to be compatible with the O= option 391 # Needed to be compatible with the O= option
392 LINUXINCLUDE := \ 392 LINUXINCLUDE := \
393 -I$(srctree)/arch/$(hdr-arch)/include \ 393 -I$(srctree)/arch/$(hdr-arch)/include \
394 -Iarch/$(hdr-arch)/include/generated/uapi \ 394 -Iarch/$(hdr-arch)/include/generated/uapi \
395 -Iarch/$(hdr-arch)/include/generated \ 395 -Iarch/$(hdr-arch)/include/generated \
396 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 396 $(if $(KBUILD_SRC), -I$(srctree)/include) \
397 -Iinclude \ 397 -Iinclude \
398 $(USERINCLUDE) 398 $(USERINCLUDE)
399 399
400 KBUILD_CPPFLAGS := -D__KERNEL__ 400 KBUILD_CPPFLAGS := -D__KERNEL__
401 401
402 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 402 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
403 -fno-strict-aliasing -fno-common \ 403 -fno-strict-aliasing -fno-common \
404 -Werror-implicit-function-declaration \ 404 -Werror-implicit-function-declaration \
405 -Wno-format-security \ 405 -Wno-format-security \
406 -std=gnu89 406 -std=gnu89
407 407
408 KBUILD_AFLAGS_KERNEL := 408 KBUILD_AFLAGS_KERNEL :=
409 KBUILD_CFLAGS_KERNEL := 409 KBUILD_CFLAGS_KERNEL :=
410 KBUILD_AFLAGS := -D__ASSEMBLY__ 410 KBUILD_AFLAGS := -D__ASSEMBLY__
411 KBUILD_AFLAGS_MODULE := -DMODULE 411 KBUILD_AFLAGS_MODULE := -DMODULE
412 KBUILD_CFLAGS_MODULE := -DMODULE 412 KBUILD_CFLAGS_MODULE := -DMODULE
413 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 413 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
414 414
415 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 415 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
416 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 416 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
417 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 417 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
418 418
419 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 419 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
420 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 420 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
421 export CPP AR NM STRIP OBJCOPY OBJDUMP 421 export CPP AR NM STRIP OBJCOPY OBJDUMP
422 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE 422 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
423 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 423 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
424 424
425 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 425 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
426 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 426 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
427 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 427 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
428 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 428 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
429 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 429 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
430 export KBUILD_ARFLAGS 430 export KBUILD_ARFLAGS
431 431
432 # When compiling out-of-tree modules, put MODVERDIR in the module 432 # When compiling out-of-tree modules, put MODVERDIR in the module
433 # tree rather than in the kernel tree. The kernel tree might 433 # tree rather than in the kernel tree. The kernel tree might
434 # even be read-only. 434 # even be read-only.
435 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 435 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
436 436
437 # Files to ignore in find ... statements 437 # Files to ignore in find ... statements
438 438
439 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 439 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
440 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 440 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
441 -prune -o 441 -prune -o
442 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 442 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
443 --exclude CVS --exclude .pc --exclude .hg --exclude .git 443 --exclude CVS --exclude .pc --exclude .hg --exclude .git
444 444
445 # =========================================================================== 445 # ===========================================================================
446 # Rules shared between *config targets and build targets 446 # Rules shared between *config targets and build targets
447 447
448 # Basic helpers built in scripts/ 448 # Basic helpers built in scripts/
449 PHONY += scripts_basic 449 PHONY += scripts_basic
450 scripts_basic: 450 scripts_basic:
451 $(Q)$(MAKE) $(build)=scripts/basic 451 $(Q)$(MAKE) $(build)=scripts/basic
452 $(Q)rm -f .tmp_quiet_recordmcount 452 $(Q)rm -f .tmp_quiet_recordmcount
453 453
454 # To avoid any implicit rule to kick in, define an empty command. 454 # To avoid any implicit rule to kick in, define an empty command.
455 scripts/basic/%: scripts_basic ; 455 scripts/basic/%: scripts_basic ;
456 456
457 PHONY += outputmakefile 457 PHONY += outputmakefile
458 # outputmakefile generates a Makefile in the output directory, if using a 458 # outputmakefile generates a Makefile in the output directory, if using a
459 # separate output directory. This allows convenient use of make in the 459 # separate output directory. This allows convenient use of make in the
460 # output directory. 460 # output directory.
461 outputmakefile: 461 outputmakefile:
462 ifneq ($(KBUILD_SRC),) 462 ifneq ($(KBUILD_SRC),)
463 $(Q)ln -fsn $(srctree) source 463 $(Q)ln -fsn $(srctree) source
464 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 464 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
465 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 465 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
466 endif 466 endif
467 467
468 # Support for using generic headers in asm-generic 468 # Support for using generic headers in asm-generic
469 PHONY += asm-generic 469 PHONY += asm-generic
470 asm-generic: 470 asm-generic:
471 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 471 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
472 src=asm obj=arch/$(SRCARCH)/include/generated/asm 472 src=asm obj=arch/$(SRCARCH)/include/generated/asm
473 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 473 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
474 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm 474 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
475 475
476 # To make sure we do not include .config for any of the *config targets 476 # To make sure we do not include .config for any of the *config targets
477 # catch them early, and hand them over to scripts/kconfig/Makefile 477 # catch them early, and hand them over to scripts/kconfig/Makefile
478 # It is allowed to specify more targets when calling make, including 478 # It is allowed to specify more targets when calling make, including
479 # mixing *config targets and build targets. 479 # mixing *config targets and build targets.
480 # For example 'make oldconfig all'. 480 # For example 'make oldconfig all'.
481 # Detect when mixed targets is specified, and make a second invocation 481 # Detect when mixed targets is specified, and make a second invocation
482 # of make so .config is not included in this case either (for *config). 482 # of make so .config is not included in this case either (for *config).
483 483
484 version_h := include/generated/uapi/linux/version.h 484 version_h := include/generated/uapi/linux/version.h
485 old_version_h := include/linux/version.h 485 old_version_h := include/linux/version.h
486 486
487 no-dot-config-targets := clean mrproper distclean \ 487 no-dot-config-targets := clean mrproper distclean \
488 cscope gtags TAGS tags help% %docs check% coccicheck \ 488 cscope gtags TAGS tags help% %docs check% coccicheck \
489 $(version_h) headers_% archheaders archscripts \ 489 $(version_h) headers_% archheaders archscripts \
490 kernelversion %src-pkg 490 kernelversion %src-pkg
491 491
492 config-targets := 0 492 config-targets := 0
493 mixed-targets := 0 493 mixed-targets := 0
494 dot-config := 1 494 dot-config := 1
495 495
496 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 496 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
497 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 497 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
498 dot-config := 0 498 dot-config := 0
499 endif 499 endif
500 endif 500 endif
501 501
502 ifeq ($(KBUILD_EXTMOD),) 502 ifeq ($(KBUILD_EXTMOD),)
503 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 503 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
504 config-targets := 1 504 config-targets := 1
505 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 505 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
506 mixed-targets := 1 506 mixed-targets := 1
507 endif 507 endif
508 endif 508 endif
509 endif 509 endif
510 510
511 ifeq ($(mixed-targets),1) 511 ifeq ($(mixed-targets),1)
512 # =========================================================================== 512 # ===========================================================================
513 # We're called with mixed targets (*config and build targets). 513 # We're called with mixed targets (*config and build targets).
514 # Handle them one by one. 514 # Handle them one by one.
515 515
516 PHONY += $(MAKECMDGOALS) __build_one_by_one 516 PHONY += $(MAKECMDGOALS) __build_one_by_one
517 517
518 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 518 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
519 @: 519 @:
520 520
521 __build_one_by_one: 521 __build_one_by_one:
522 $(Q)set -e; \ 522 $(Q)set -e; \
523 for i in $(MAKECMDGOALS); do \ 523 for i in $(MAKECMDGOALS); do \
524 $(MAKE) -f $(srctree)/Makefile $$i; \ 524 $(MAKE) -f $(srctree)/Makefile $$i; \
525 done 525 done
526 526
527 else 527 else
528 ifeq ($(config-targets),1) 528 ifeq ($(config-targets),1)
529 # =========================================================================== 529 # ===========================================================================
530 # *config targets only - make sure prerequisites are updated, and descend 530 # *config targets only - make sure prerequisites are updated, and descend
531 # in scripts/kconfig to make the *config target 531 # in scripts/kconfig to make the *config target
532 532
533 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 533 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
534 # KBUILD_DEFCONFIG may point out an alternative default configuration 534 # KBUILD_DEFCONFIG may point out an alternative default configuration
535 # used for 'make defconfig' 535 # used for 'make defconfig'
536 include $(srctree)/arch/$(SRCARCH)/Makefile 536 include $(srctree)/arch/$(SRCARCH)/Makefile
537 export KBUILD_DEFCONFIG KBUILD_KCONFIG 537 export KBUILD_DEFCONFIG KBUILD_KCONFIG
538 538
539 config: scripts_basic outputmakefile FORCE 539 config: scripts_basic outputmakefile FORCE
540 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 540 $(Q)$(MAKE) $(build)=scripts/kconfig $@
541 541
542 %config: scripts_basic outputmakefile FORCE 542 %config: scripts_basic outputmakefile FORCE
543 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 543 $(Q)$(MAKE) $(build)=scripts/kconfig $@
544 544
545 else 545 else
546 # =========================================================================== 546 # ===========================================================================
547 # Build targets only - this includes vmlinux, arch specific targets, clean 547 # Build targets only - this includes vmlinux, arch specific targets, clean
548 # targets and others. In general all targets except *config targets. 548 # targets and others. In general all targets except *config targets.
549 549
550 ifeq ($(KBUILD_EXTMOD),) 550 ifeq ($(KBUILD_EXTMOD),)
551 # Additional helpers built in scripts/ 551 # Additional helpers built in scripts/
552 # Carefully list dependencies so we do not try to build scripts twice 552 # Carefully list dependencies so we do not try to build scripts twice
553 # in parallel 553 # in parallel
554 PHONY += scripts 554 PHONY += scripts
555 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ 555 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
556 asm-generic 556 asm-generic
557 $(Q)$(MAKE) $(build)=$(@) 557 $(Q)$(MAKE) $(build)=$(@)
558 558
559 # Objects we will link into vmlinux / subdirs we need to visit 559 # Objects we will link into vmlinux / subdirs we need to visit
560 init-y := init/ 560 init-y := init/
561 drivers-y := drivers/ sound/ firmware/ 561 drivers-y := drivers/ sound/ firmware/
562 net-y := net/ 562 net-y := net/
563 libs-y := lib/ 563 libs-y := lib/
564 core-y := usr/ 564 core-y := usr/
565 endif # KBUILD_EXTMOD 565 endif # KBUILD_EXTMOD
566 566
567 ifeq ($(dot-config),1) 567 ifeq ($(dot-config),1)
568 # Read in config 568 # Read in config
569 -include include/config/auto.conf 569 -include include/config/auto.conf
570 570
571 ifeq ($(KBUILD_EXTMOD),) 571 ifeq ($(KBUILD_EXTMOD),)
572 # Read in dependencies to all Kconfig* files, make sure to run 572 # Read in dependencies to all Kconfig* files, make sure to run
573 # oldconfig if changes are detected. 573 # oldconfig if changes are detected.
574 -include include/config/auto.conf.cmd 574 -include include/config/auto.conf.cmd
575 575
576 # To avoid any implicit rule to kick in, define an empty command 576 # To avoid any implicit rule to kick in, define an empty command
577 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 577 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
578 578
579 # If .config is newer than include/config/auto.conf, someone tinkered 579 # If .config is newer than include/config/auto.conf, someone tinkered
580 # with it and forgot to run make oldconfig. 580 # with it and forgot to run make oldconfig.
581 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 581 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
582 # we execute the config step to be sure to catch updated Kconfig files 582 # we execute the config step to be sure to catch updated Kconfig files
583 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 583 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
584 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 584 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
585 else 585 else
586 # external modules needs include/generated/autoconf.h and include/config/auto.conf 586 # external modules needs include/generated/autoconf.h and include/config/auto.conf
587 # but do not care if they are up-to-date. Use auto.conf to trigger the test 587 # but do not care if they are up-to-date. Use auto.conf to trigger the test
588 PHONY += include/config/auto.conf 588 PHONY += include/config/auto.conf
589 589
590 include/config/auto.conf: 590 include/config/auto.conf:
591 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 591 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
592 echo >&2; \ 592 echo >&2; \
593 echo >&2 " ERROR: Kernel configuration is invalid."; \ 593 echo >&2 " ERROR: Kernel configuration is invalid."; \
594 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 594 echo >&2 " include/generated/autoconf.h or $@ are missing.";\
595 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 595 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
596 echo >&2 ; \ 596 echo >&2 ; \
597 /bin/false) 597 /bin/false)
598 598
599 endif # KBUILD_EXTMOD 599 endif # KBUILD_EXTMOD
600 600
601 else 601 else
602 # Dummy target needed, because used as prerequisite 602 # Dummy target needed, because used as prerequisite
603 include/config/auto.conf: ; 603 include/config/auto.conf: ;
604 endif # $(dot-config) 604 endif # $(dot-config)
605 605
606 # The all: target is the default when no target is given on the 606 # The all: target is the default when no target is given on the
607 # command line. 607 # command line.
608 # This allow a user to issue only 'make' to build a kernel including modules 608 # This allow a user to issue only 'make' to build a kernel including modules
609 # Defaults to vmlinux, but the arch makefile usually adds further targets 609 # Defaults to vmlinux, but the arch makefile usually adds further targets
610 all: vmlinux 610 all: vmlinux
611 611
612 include $(srctree)/arch/$(SRCARCH)/Makefile 612 include $(srctree)/arch/$(SRCARCH)/Makefile
613 613
614 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 614 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
615 615
616 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 616 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
617 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) 617 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
618 else 618 else
619 KBUILD_CFLAGS += -O2 619 KBUILD_CFLAGS += -O2
620 endif 620 endif
621 621
622 # Tell gcc to never replace conditional load with a non-conditional one 622 # Tell gcc to never replace conditional load with a non-conditional one
623 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 623 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
624 624
625 ifdef CONFIG_READABLE_ASM 625 ifdef CONFIG_READABLE_ASM
626 # Disable optimizations that make assembler listings hard to read. 626 # Disable optimizations that make assembler listings hard to read.
627 # reorder blocks reorders the control in the function 627 # reorder blocks reorders the control in the function
628 # ipa clone creates specialized cloned functions 628 # ipa clone creates specialized cloned functions
629 # partial inlining inlines only parts of functions 629 # partial inlining inlines only parts of functions
630 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 630 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
631 $(call cc-option,-fno-ipa-cp-clone,) \ 631 $(call cc-option,-fno-ipa-cp-clone,) \
632 $(call cc-option,-fno-partial-inlining) 632 $(call cc-option,-fno-partial-inlining)
633 endif 633 endif
634 634
635 ifneq ($(CONFIG_FRAME_WARN),0) 635 ifneq ($(CONFIG_FRAME_WARN),0)
636 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 636 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
637 endif 637 endif
638 638
639 # Handle stack protector mode. 639 # Handle stack protector mode.
640 # 640 #
641 # Since kbuild can potentially perform two passes (first with the old 641 # Since kbuild can potentially perform two passes (first with the old
642 # .config values and then with updated .config values), we cannot error out 642 # .config values and then with updated .config values), we cannot error out
643 # if a desired compiler option is unsupported. If we were to error, kbuild 643 # if a desired compiler option is unsupported. If we were to error, kbuild
644 # could never get to the second pass and actually notice that we changed 644 # could never get to the second pass and actually notice that we changed
645 # the option to something that was supported. 645 # the option to something that was supported.
646 # 646 #
647 # Additionally, we don't want to fallback and/or silently change which compiler 647 # Additionally, we don't want to fallback and/or silently change which compiler
648 # flags will be used, since that leads to producing kernels with different 648 # flags will be used, since that leads to producing kernels with different
649 # security feature characteristics depending on the compiler used. ("But I 649 # security feature characteristics depending on the compiler used. ("But I
650 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") 650 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!")
651 # 651 #
652 # The middle ground is to warn here so that the failed option is obvious, but 652 # The middle ground is to warn here so that the failed option is obvious, but
653 # to let the build fail with bad compiler flags so that we can't produce a 653 # to let the build fail with bad compiler flags so that we can't produce a
654 # kernel when there is a CONFIG and compiler mismatch. 654 # kernel when there is a CONFIG and compiler mismatch.
655 # 655 #
656 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR 656 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
657 stackp-flag := -fstack-protector 657 stackp-flag := -fstack-protector
658 ifeq ($(call cc-option, $(stackp-flag)),) 658 ifeq ($(call cc-option, $(stackp-flag)),)
659 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ 659 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
660 -fstack-protector not supported by compiler) 660 -fstack-protector not supported by compiler)
661 endif 661 endif
662 else 662 else
663 ifdef CONFIG_CC_STACKPROTECTOR_STRONG 663 ifdef CONFIG_CC_STACKPROTECTOR_STRONG
664 stackp-flag := -fstack-protector-strong 664 stackp-flag := -fstack-protector-strong
665 ifeq ($(call cc-option, $(stackp-flag)),) 665 ifeq ($(call cc-option, $(stackp-flag)),)
666 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ 666 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
667 -fstack-protector-strong not supported by compiler) 667 -fstack-protector-strong not supported by compiler)
668 endif 668 endif
669 else 669 else
670 # Force off for distro compilers that enable stack protector by default. 670 # Force off for distro compilers that enable stack protector by default.
671 stackp-flag := $(call cc-option, -fno-stack-protector) 671 stackp-flag := $(call cc-option, -fno-stack-protector)
672 endif 672 endif
673 endif 673 endif
674 KBUILD_CFLAGS += $(stackp-flag) 674 KBUILD_CFLAGS += $(stackp-flag)
675 675
676 ifeq ($(COMPILER),clang) 676 ifeq ($(COMPILER),clang)
677 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 677 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
678 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) 678 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
679 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) 679 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
680 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 680 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
681 KBUILD_CFLAGS += $(call cc-disable-warning, gnu) 681 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
682 # Quiet clang warning: comparison of unsigned expression < 0 is always false 682 # Quiet clang warning: comparison of unsigned expression < 0 is always false
683 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) 683 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
684 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 684 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
685 # source of a reference will be _MergedGlobals and not on of the whitelisted names. 685 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
686 # See modpost pattern 2 686 # See modpost pattern 2
687 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) 687 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
688 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 688 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
689 else 689 else
690 690
691 # This warning generated too much noise in a regular build. 691 # This warning generated too much noise in a regular build.
692 # Use make W=1 to enable this warning (see scripts/Makefile.build) 692 # Use make W=1 to enable this warning (see scripts/Makefile.build)
693 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 693 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
694 endif 694 endif
695 695
696 ifdef CONFIG_FRAME_POINTER 696 ifdef CONFIG_FRAME_POINTER
697 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 697 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
698 else 698 else
699 # Some targets (ARM with Thumb2, for example), can't be built with frame 699 # Some targets (ARM with Thumb2, for example), can't be built with frame
700 # pointers. For those, we don't have FUNCTION_TRACER automatically 700 # pointers. For those, we don't have FUNCTION_TRACER automatically
701 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 701 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
702 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 702 # incompatible with -fomit-frame-pointer with current GCC, so we don't use
703 # -fomit-frame-pointer with FUNCTION_TRACER. 703 # -fomit-frame-pointer with FUNCTION_TRACER.
704 ifndef CONFIG_FUNCTION_TRACER 704 ifndef CONFIG_FUNCTION_TRACER
705 KBUILD_CFLAGS += -fomit-frame-pointer 705 KBUILD_CFLAGS += -fomit-frame-pointer
706 endif 706 endif
707 endif 707 endif
708 708
709 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 709 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
710 710
711 ifdef CONFIG_DEBUG_INFO 711 ifdef CONFIG_DEBUG_INFO
712 ifdef CONFIG_DEBUG_INFO_SPLIT 712 ifdef CONFIG_DEBUG_INFO_SPLIT
713 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 713 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g)
714 else 714 else
715 KBUILD_CFLAGS += -g 715 KBUILD_CFLAGS += -g
716 endif 716 endif
717 KBUILD_AFLAGS += -Wa,-gdwarf-2 717 KBUILD_AFLAGS += -Wa,-gdwarf-2
718 endif 718 endif
719 ifdef CONFIG_DEBUG_INFO_DWARF4 719 ifdef CONFIG_DEBUG_INFO_DWARF4
720 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 720 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,)
721 endif 721 endif
722 722
723 ifdef CONFIG_DEBUG_INFO_REDUCED 723 ifdef CONFIG_DEBUG_INFO_REDUCED
724 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 724 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
725 $(call cc-option,-fno-var-tracking) 725 $(call cc-option,-fno-var-tracking)
726 endif 726 endif
727 727
728 ifdef CONFIG_FUNCTION_TRACER 728 ifdef CONFIG_FUNCTION_TRACER
729 ifdef CONFIG_HAVE_FENTRY 729 ifdef CONFIG_HAVE_FENTRY
730 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 730 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
731 endif 731 endif
732 KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) 732 KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
733 KBUILD_AFLAGS += $(CC_USING_FENTRY) 733 KBUILD_AFLAGS += $(CC_USING_FENTRY)
734 ifdef CONFIG_DYNAMIC_FTRACE 734 ifdef CONFIG_DYNAMIC_FTRACE
735 ifdef CONFIG_HAVE_C_RECORDMCOUNT 735 ifdef CONFIG_HAVE_C_RECORDMCOUNT
736 BUILD_C_RECORDMCOUNT := y 736 BUILD_C_RECORDMCOUNT := y
737 export BUILD_C_RECORDMCOUNT 737 export BUILD_C_RECORDMCOUNT
738 endif 738 endif
739 endif 739 endif
740 endif 740 endif
741 741
742 # We trigger additional mismatches with less inlining 742 # We trigger additional mismatches with less inlining
743 ifdef CONFIG_DEBUG_SECTION_MISMATCH 743 ifdef CONFIG_DEBUG_SECTION_MISMATCH
744 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 744 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
745 endif 745 endif
746 746
747 # arch Makefile may override CC so keep this after arch Makefile is included 747 # arch Makefile may override CC so keep this after arch Makefile is included
748 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 748 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
749 CHECKFLAGS += $(NOSTDINC_FLAGS) 749 CHECKFLAGS += $(NOSTDINC_FLAGS)
750 750
751 # warn about C99 declaration after statement 751 # warn about C99 declaration after statement
752 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 752 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
753 753
754 # disable pointer signed / unsigned warnings in gcc 4.0 754 # disable pointer signed / unsigned warnings in gcc 4.0
755 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 755 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
756 756
757 # disable invalid "can't wrap" optimizations for signed / pointers 757 # disable invalid "can't wrap" optimizations for signed / pointers
758 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 758 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
759 759
760 # conserve stack if available 760 # conserve stack if available
761 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 761 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
762 762
763 # disallow errors like 'EXPORT_GPL(foo);' with missing header 763 # disallow errors like 'EXPORT_GPL(foo);' with missing header
764 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 764 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
765 765
766 # require functions to have arguments in prototypes, not empty 'int foo()' 766 # require functions to have arguments in prototypes, not empty 'int foo()'
767 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 767 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
768 768
769 # Prohibit date/time macros, which would make the build non-deterministic 769 # Prohibit date/time macros, which would make the build non-deterministic
770 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 770 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
771 771
772 # use the deterministic mode of AR if available 772 # use the deterministic mode of AR if available
773 KBUILD_ARFLAGS := $(call ar-option,D) 773 KBUILD_ARFLAGS := $(call ar-option,D)
774 774
775 # check for 'asm goto' 775 # check for 'asm goto'
776 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) 776 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
777 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 777 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
778 endif 778 endif
779 779
780 include $(srctree)/scripts/Makefile.extrawarn 780 include $(srctree)/scripts/Makefile.extrawarn
781 781
782 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 782 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
783 KBUILD_CPPFLAGS += $(KCPPFLAGS) 783 KBUILD_CPPFLAGS += $(KCPPFLAGS)
784 KBUILD_AFLAGS += $(KAFLAGS) 784 KBUILD_AFLAGS += $(KAFLAGS)
785 KBUILD_CFLAGS += $(KCFLAGS) 785 KBUILD_CFLAGS += $(KCFLAGS)
786 786
787 # Use --build-id when available. 787 # Use --build-id when available.
788 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 788 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
789 $(call cc-ldoption, -Wl$(comma)--build-id,)) 789 $(call cc-ldoption, -Wl$(comma)--build-id,))
790 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 790 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
791 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 791 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
792 792
793 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 793 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
794 LDFLAGS_vmlinux += $(call ld-option, -X,) 794 LDFLAGS_vmlinux += $(call ld-option, -X,)
795 endif 795 endif
796 796
797 # Default kernel image to build when no specific target is given. 797 # Default kernel image to build when no specific target is given.
798 # KBUILD_IMAGE may be overruled on the command line or 798 # KBUILD_IMAGE may be overruled on the command line or
799 # set in the environment 799 # set in the environment
800 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 800 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
801 # this default value 801 # this default value
802 export KBUILD_IMAGE ?= vmlinux 802 export KBUILD_IMAGE ?= vmlinux
803 803
804 # 804 #
805 # INSTALL_PATH specifies where to place the updated kernel and system map 805 # INSTALL_PATH specifies where to place the updated kernel and system map
806 # images. Default is /boot, but you can set it to other values 806 # images. Default is /boot, but you can set it to other values
807 export INSTALL_PATH ?= /boot 807 export INSTALL_PATH ?= /boot
808 808
809 # 809 #
810 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 810 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
811 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 811 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
812 # an argument if needed. Otherwise it defaults to the kernel install path 812 # an argument if needed. Otherwise it defaults to the kernel install path
813 # 813 #
814 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 814 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
815 815
816 # 816 #
817 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 817 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
818 # relocations required by build roots. This is not defined in the 818 # relocations required by build roots. This is not defined in the
819 # makefile but the argument can be passed to make if needed. 819 # makefile but the argument can be passed to make if needed.
820 # 820 #
821 821
822 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 822 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
823 export MODLIB 823 export MODLIB
824 824
825 # 825 #
826 # INSTALL_MOD_STRIP, if defined, will cause modules to be 826 # INSTALL_MOD_STRIP, if defined, will cause modules to be
827 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 827 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
828 # the default option --strip-debug will be used. Otherwise, 828 # the default option --strip-debug will be used. Otherwise,
829 # INSTALL_MOD_STRIP value will be used as the options to the strip command. 829 # INSTALL_MOD_STRIP value will be used as the options to the strip command.
830 830
831 ifdef INSTALL_MOD_STRIP 831 ifdef INSTALL_MOD_STRIP
832 ifeq ($(INSTALL_MOD_STRIP),1) 832 ifeq ($(INSTALL_MOD_STRIP),1)
833 mod_strip_cmd = $(STRIP) --strip-debug 833 mod_strip_cmd = $(STRIP) --strip-debug
834 else 834 else
835 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 835 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
836 endif # INSTALL_MOD_STRIP=1 836 endif # INSTALL_MOD_STRIP=1
837 else 837 else
838 mod_strip_cmd = true 838 mod_strip_cmd = true
839 endif # INSTALL_MOD_STRIP 839 endif # INSTALL_MOD_STRIP
840 export mod_strip_cmd 840 export mod_strip_cmd
841 841
842 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 842 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
843 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 843 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
844 # or CONFIG_MODULE_COMPRESS_XZ. 844 # or CONFIG_MODULE_COMPRESS_XZ.
845 845
846 mod_compress_cmd = true 846 mod_compress_cmd = true
847 ifdef CONFIG_MODULE_COMPRESS 847 ifdef CONFIG_MODULE_COMPRESS
848 ifdef CONFIG_MODULE_COMPRESS_GZIP 848 ifdef CONFIG_MODULE_COMPRESS_GZIP
849 mod_compress_cmd = gzip -n 849 mod_compress_cmd = gzip -n
850 endif # CONFIG_MODULE_COMPRESS_GZIP 850 endif # CONFIG_MODULE_COMPRESS_GZIP
851 ifdef CONFIG_MODULE_COMPRESS_XZ 851 ifdef CONFIG_MODULE_COMPRESS_XZ
852 mod_compress_cmd = xz 852 mod_compress_cmd = xz
853 endif # CONFIG_MODULE_COMPRESS_XZ 853 endif # CONFIG_MODULE_COMPRESS_XZ
854 endif # CONFIG_MODULE_COMPRESS 854 endif # CONFIG_MODULE_COMPRESS
855 export mod_compress_cmd 855 export mod_compress_cmd
856 856
857 # Select initial ramdisk compression format, default is gzip(1). 857 # Select initial ramdisk compression format, default is gzip(1).
858 # This shall be used by the dracut(8) tool while creating an initramfs image. 858 # This shall be used by the dracut(8) tool while creating an initramfs image.
859 # 859 #
860 INITRD_COMPRESS-y := gzip 860 INITRD_COMPRESS-y := gzip
861 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 861 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
862 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma 862 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
863 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz 863 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
864 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo 864 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
865 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 865 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
866 # do not export INITRD_COMPRESS, since we didn't actually 866 # do not export INITRD_COMPRESS, since we didn't actually
867 # choose a sane default compression above. 867 # choose a sane default compression above.
868 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 868 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
869 869
870 ifdef CONFIG_MODULE_SIG_ALL 870 ifdef CONFIG_MODULE_SIG_ALL
871 MODSECKEY = ./signing_key.priv 871 MODSECKEY = ./signing_key.priv
872 MODPUBKEY = ./signing_key.x509 872 MODPUBKEY = ./signing_key.x509
873 export MODPUBKEY 873 export MODPUBKEY
874 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) 874 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY)
875 else 875 else
876 mod_sign_cmd = true 876 mod_sign_cmd = true
877 endif 877 endif
878 export mod_sign_cmd 878 export mod_sign_cmd
879 879
880 880
881 ifeq ($(KBUILD_EXTMOD),) 881 ifeq ($(KBUILD_EXTMOD),)
882 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 882 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
883 883
884 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 884 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
885 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 885 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
886 $(net-y) $(net-m) $(libs-y) $(libs-m))) 886 $(net-y) $(net-m) $(libs-y) $(libs-m)))
887 887
888 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 888 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
889 $(init-) $(core-) $(drivers-) $(net-) $(libs-)))) 889 $(init-) $(core-) $(drivers-) $(net-) $(libs-))))
890 890
891 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 891 init-y := $(patsubst %/, %/built-in.o, $(init-y))
892 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 892 core-y := $(patsubst %/, %/built-in.o, $(core-y))
893 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 893 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
894 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 894 net-y := $(patsubst %/, %/built-in.o, $(net-y))
895 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 895 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
896 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 896 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
897 libs-y := $(libs-y1) $(libs-y2) 897 libs-y := $(libs-y1) $(libs-y2)
898 898
899 # Externally visible symbols (used by link-vmlinux.sh) 899 # Externally visible symbols (used by link-vmlinux.sh)
900 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) 900 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
901 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) 901 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
902 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 902 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
903 export LDFLAGS_vmlinux 903 export LDFLAGS_vmlinux
904 # used by scripts/pacmage/Makefile 904 # used by scripts/pacmage/Makefile
905 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) 905 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt)
906 906
907 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) 907 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
908 908
909 # Final link of vmlinux 909 # Final link of vmlinux
910 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) 910 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
911 quiet_cmd_link-vmlinux = LINK $@ 911 quiet_cmd_link-vmlinux = LINK $@
912 912
913 # Include targets which we want to 913 # Include targets which we want to
914 # execute if the rest of the kernel build went well. 914 # execute if the rest of the kernel build went well.
915 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE 915 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
916 ifdef CONFIG_HEADERS_CHECK 916 ifdef CONFIG_HEADERS_CHECK
917 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 917 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
918 endif 918 endif
919 ifdef CONFIG_SAMPLES 919 ifdef CONFIG_SAMPLES
920 $(Q)$(MAKE) $(build)=samples 920 $(Q)$(MAKE) $(build)=samples
921 endif 921 endif
922 ifdef CONFIG_BUILD_DOCSRC 922 ifdef CONFIG_BUILD_DOCSRC
923 $(Q)$(MAKE) $(build)=Documentation 923 $(Q)$(MAKE) $(build)=Documentation
924 endif 924 endif
925 +$(call if_changed,link-vmlinux) 925 +$(call if_changed,link-vmlinux)
926 926
927 # The actual objects are generated when descending, 927 # The actual objects are generated when descending,
928 # make sure no implicit rule kicks in 928 # make sure no implicit rule kicks in
929 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 929 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
930 930
931 # Handle descending into subdirectories listed in $(vmlinux-dirs) 931 # Handle descending into subdirectories listed in $(vmlinux-dirs)
932 # Preset locale variables to speed up the build process. Limit locale 932 # Preset locale variables to speed up the build process. Limit locale
933 # tweaks to this spot to avoid wrong language settings when running 933 # tweaks to this spot to avoid wrong language settings when running
934 # make menuconfig etc. 934 # make menuconfig etc.
935 # Error messages still appears in the original language 935 # Error messages still appears in the original language
936 936
937 PHONY += $(vmlinux-dirs) 937 PHONY += $(vmlinux-dirs)
938 $(vmlinux-dirs): prepare scripts 938 $(vmlinux-dirs): prepare scripts
939 $(Q)$(MAKE) $(build)=$@ 939 $(Q)$(MAKE) $(build)=$@
940 940
941 define filechk_kernel.release 941 define filechk_kernel.release
942 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 942 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
943 endef 943 endef
944 944
945 # Store (new) KERNELRELEASE string in include/config/kernel.release 945 # Store (new) KERNELRELEASE string in include/config/kernel.release
946 include/config/kernel.release: include/config/auto.conf FORCE 946 include/config/kernel.release: include/config/auto.conf FORCE
947 $(call filechk,kernel.release) 947 $(call filechk,kernel.release)
948 948
949 949
950 # Things we need to do before we recursively start building the kernel 950 # Things we need to do before we recursively start building the kernel
951 # or the modules are listed in "prepare". 951 # or the modules are listed in "prepare".
952 # A multi level approach is used. prepareN is processed before prepareN-1. 952 # A multi level approach is used. prepareN is processed before prepareN-1.
953 # archprepare is used in arch Makefiles and when processed asm symlink, 953 # archprepare is used in arch Makefiles and when processed asm symlink,
954 # version.h and scripts_basic is processed / created. 954 # version.h and scripts_basic is processed / created.
955 955
956 # Listed in dependency order 956 # Listed in dependency order
957 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 957 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
958 958
959 # prepare3 is used to check if we are building in a separate output directory, 959 # prepare3 is used to check if we are building in a separate output directory,
960 # and if so do: 960 # and if so do:
961 # 1) Check that make has not been executed in the kernel src $(srctree) 961 # 1) Check that make has not been executed in the kernel src $(srctree)
962 prepare3: include/config/kernel.release 962 prepare3: include/config/kernel.release
963 ifneq ($(KBUILD_SRC),) 963 ifneq ($(KBUILD_SRC),)
964 @$(kecho) ' Using $(srctree) as source for kernel' 964 @$(kecho) ' Using $(srctree) as source for kernel'
965 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 965 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
966 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 966 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
967 echo >&2 " in the '$(srctree)' directory.";\ 967 echo >&2 " in the '$(srctree)' directory.";\
968 /bin/false; \ 968 /bin/false; \
969 fi; 969 fi;
970 endif 970 endif
971 971
972 # prepare2 creates a makefile if using a separate output directory 972 # prepare2 creates a makefile if using a separate output directory
973 prepare2: prepare3 outputmakefile asm-generic 973 prepare2: prepare3 outputmakefile asm-generic
974 974
975 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ 975 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
976 include/config/auto.conf 976 include/config/auto.conf
977 $(cmd_crmodverdir) 977 $(cmd_crmodverdir)
978 978
979 archprepare: archheaders archscripts prepare1 scripts_basic 979 archprepare: archheaders archscripts prepare1 scripts_basic
980 980
981 prepare0: archprepare FORCE 981 prepare0: archprepare FORCE
982 $(Q)$(MAKE) $(build)=. 982 $(Q)$(MAKE) $(build)=.
983 983
984 # All the preparing.. 984 # All the preparing..
985 prepare: prepare0 985 prepare: prepare0
986 986
987 # Generate some files 987 # Generate some files
988 # --------------------------------------------------------------------------- 988 # ---------------------------------------------------------------------------
989 989
990 # KERNELRELEASE can change from a few different places, meaning version.h 990 # KERNELRELEASE can change from a few different places, meaning version.h
991 # needs to be updated, so this check is forced on all builds 991 # needs to be updated, so this check is forced on all builds
992 992
993 uts_len := 64 993 uts_len := 64
994 define filechk_utsrelease.h 994 define filechk_utsrelease.h
995 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 995 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
996 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 996 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
997 exit 1; \ 997 exit 1; \
998 fi; \ 998 fi; \
999 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 999 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1000 endef 1000 endef
1001 1001
1002 define filechk_version.h 1002 define filechk_version.h
1003 (echo \#define LINUX_VERSION_CODE $(shell \ 1003 (echo \#define LINUX_VERSION_CODE $(shell \
1004 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1004 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
1005 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1005 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1006 endef 1006 endef
1007 1007
1008 $(version_h): $(srctree)/Makefile FORCE 1008 $(version_h): $(srctree)/Makefile FORCE
1009 $(call filechk,version.h) 1009 $(call filechk,version.h)
1010 $(Q)rm -f $(old_version_h) 1010 $(Q)rm -f $(old_version_h)
1011 1011
1012 include/generated/utsrelease.h: include/config/kernel.release FORCE 1012 include/generated/utsrelease.h: include/config/kernel.release FORCE
1013 $(call filechk,utsrelease.h) 1013 $(call filechk,utsrelease.h)
1014 1014
1015 PHONY += headerdep 1015 PHONY += headerdep
1016 headerdep: 1016 headerdep:
1017 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1017 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
1018 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1018 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
1019 1019
1020 # --------------------------------------------------------------------------- 1020 # ---------------------------------------------------------------------------
1021 1021
1022 PHONY += depend dep 1022 PHONY += depend dep
1023 depend dep: 1023 depend dep:
1024 @echo '*** Warning: make $@ is unnecessary now.' 1024 @echo '*** Warning: make $@ is unnecessary now.'
1025 1025
1026 # --------------------------------------------------------------------------- 1026 # ---------------------------------------------------------------------------
1027 # Firmware install 1027 # Firmware install
1028 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1028 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1029 export INSTALL_FW_PATH 1029 export INSTALL_FW_PATH
1030 1030
1031 PHONY += firmware_install 1031 PHONY += firmware_install
1032 firmware_install: FORCE 1032 firmware_install: FORCE
1033 @mkdir -p $(objtree)/firmware 1033 @mkdir -p $(objtree)/firmware
1034 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1034 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1035 1035
1036 # --------------------------------------------------------------------------- 1036 # ---------------------------------------------------------------------------
1037 # Kernel headers 1037 # Kernel headers
1038 1038
1039 #Default location for installed headers 1039 #Default location for installed headers
1040 export INSTALL_HDR_PATH = $(objtree)/usr 1040 export INSTALL_HDR_PATH = $(objtree)/usr
1041 1041
1042 # If we do an all arch process set dst to asm-$(hdr-arch) 1042 # If we do an all arch process set dst to asm-$(hdr-arch)
1043 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1043 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1044 1044
1045 PHONY += archheaders 1045 PHONY += archheaders
1046 archheaders: 1046 archheaders:
1047 1047
1048 PHONY += archscripts 1048 PHONY += archscripts
1049 archscripts: 1049 archscripts:
1050 1050
1051 PHONY += __headers 1051 PHONY += __headers
1052 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE 1052 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
1053 $(Q)$(MAKE) $(build)=scripts build_unifdef 1053 $(Q)$(MAKE) $(build)=scripts build_unifdef
1054 1054
1055 PHONY += headers_install_all 1055 PHONY += headers_install_all
1056 headers_install_all: 1056 headers_install_all:
1057 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1057 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1058 1058
1059 PHONY += headers_install 1059 PHONY += headers_install
1060 headers_install: __headers 1060 headers_install: __headers
1061 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ 1061 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
1062 $(error Headers not exportable for the $(SRCARCH) architecture)) 1062 $(error Headers not exportable for the $(SRCARCH) architecture))
1063 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1063 $(Q)$(MAKE) $(hdr-inst)=include/uapi
1064 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) 1064 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
1065 1065
1066 PHONY += headers_check_all 1066 PHONY += headers_check_all
1067 headers_check_all: headers_install_all 1067 headers_check_all: headers_install_all
1068 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1068 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1069 1069
1070 PHONY += headers_check 1070 PHONY += headers_check
1071 headers_check: headers_install 1071 headers_check: headers_install
1072 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 1072 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1073 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 1073 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
1074 1074
1075 # --------------------------------------------------------------------------- 1075 # ---------------------------------------------------------------------------
1076 # Kernel selftest 1076 # Kernel selftest
1077 1077
1078 PHONY += kselftest 1078 PHONY += kselftest
1079 kselftest: 1079 kselftest:
1080 $(Q)$(MAKE) -C tools/testing/selftests run_tests 1080 $(Q)$(MAKE) -C tools/testing/selftests run_tests
1081 1081
1082 # --------------------------------------------------------------------------- 1082 # ---------------------------------------------------------------------------
1083 # Modules 1083 # Modules
1084 1084
1085 ifdef CONFIG_MODULES 1085 ifdef CONFIG_MODULES
1086 1086
1087 # By default, build modules as well 1087 # By default, build modules as well
1088 1088
1089 all: modules 1089 all: modules
1090 1090
1091 # Build modules 1091 # Build modules
1092 # 1092 #
1093 # A module can be listed more than once in obj-m resulting in 1093 # A module can be listed more than once in obj-m resulting in
1094 # duplicate lines in modules.order files. Those are removed 1094 # duplicate lines in modules.order files. Those are removed
1095 # using awk while concatenating to the final file. 1095 # using awk while concatenating to the final file.
1096 1096
1097 PHONY += modules 1097 PHONY += modules
1098 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1098 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
1099 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1099 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1100 @$(kecho) ' Building modules, stage 2.'; 1100 @$(kecho) ' Building modules, stage 2.';
1101 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1101 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1102 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1102 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1103 1103
1104 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1104 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1105 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1105 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1106 1106
1107 %/modules.builtin: include/config/auto.conf 1107 %/modules.builtin: include/config/auto.conf
1108 $(Q)$(MAKE) $(modbuiltin)=$* 1108 $(Q)$(MAKE) $(modbuiltin)=$*
1109 1109
1110 1110
1111 # Target to prepare building external modules 1111 # Target to prepare building external modules
1112 PHONY += modules_prepare 1112 PHONY += modules_prepare
1113 modules_prepare: prepare scripts 1113 modules_prepare: prepare scripts
1114 1114
1115 # Target to install modules 1115 # Target to install modules
1116 PHONY += modules_install 1116 PHONY += modules_install
1117 modules_install: _modinst_ _modinst_post 1117 modules_install: _modinst_ _modinst_post
1118 1118
1119 PHONY += _modinst_ 1119 PHONY += _modinst_
1120 _modinst_: 1120 _modinst_:
1121 @rm -rf $(MODLIB)/kernel 1121 @rm -rf $(MODLIB)/kernel
1122 @rm -f $(MODLIB)/source 1122 @rm -f $(MODLIB)/source
1123 @mkdir -p $(MODLIB)/kernel 1123 @mkdir -p $(MODLIB)/kernel
1124 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source 1124 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
1125 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1125 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1126 rm -f $(MODLIB)/build ; \ 1126 rm -f $(MODLIB)/build ; \
1127 ln -s $(CURDIR) $(MODLIB)/build ; \ 1127 ln -s $(CURDIR) $(MODLIB)/build ; \
1128 fi 1128 fi
1129 @cp -f $(objtree)/modules.order $(MODLIB)/ 1129 @cp -f $(objtree)/modules.order $(MODLIB)/
1130 @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1130 @cp -f $(objtree)/modules.builtin $(MODLIB)/
1131 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1131 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1132 1132
1133 # This depmod is only for convenience to give the initial 1133 # This depmod is only for convenience to give the initial
1134 # boot a modules.dep even before / is mounted read-write. However the 1134 # boot a modules.dep even before / is mounted read-write. However the
1135 # boot script depmod is the master version. 1135 # boot script depmod is the master version.
1136 PHONY += _modinst_post 1136 PHONY += _modinst_post
1137 _modinst_post: _modinst_ 1137 _modinst_post: _modinst_
1138 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1138 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1139 $(call cmd,depmod) 1139 $(call cmd,depmod)
1140 1140
1141 ifeq ($(CONFIG_MODULE_SIG), y) 1141 ifeq ($(CONFIG_MODULE_SIG), y)
1142 PHONY += modules_sign 1142 PHONY += modules_sign
1143 modules_sign: 1143 modules_sign:
1144 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1144 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1145 endif 1145 endif
1146 1146
1147 else # CONFIG_MODULES 1147 else # CONFIG_MODULES
1148 1148
1149 # Modules not configured 1149 # Modules not configured
1150 # --------------------------------------------------------------------------- 1150 # ---------------------------------------------------------------------------
1151 1151
1152 modules modules_install: FORCE 1152 modules modules_install: FORCE
1153 @echo >&2 1153 @echo >&2
1154 @echo >&2 "The present kernel configuration has modules disabled." 1154 @echo >&2 "The present kernel configuration has modules disabled."
1155 @echo >&2 "Type 'make config' and enable loadable module support." 1155 @echo >&2 "Type 'make config' and enable loadable module support."
1156 @echo >&2 "Then build a kernel with module support enabled." 1156 @echo >&2 "Then build a kernel with module support enabled."
1157 @echo >&2 1157 @echo >&2
1158 @exit 1 1158 @exit 1
1159 1159
1160 endif # CONFIG_MODULES 1160 endif # CONFIG_MODULES
1161 1161
1162 ### 1162 ###
1163 # Cleaning is done on three levels. 1163 # Cleaning is done on three levels.
1164 # make clean Delete most generated files 1164 # make clean Delete most generated files
1165 # Leave enough to build external modules 1165 # Leave enough to build external modules
1166 # make mrproper Delete the current configuration, and all generated files 1166 # make mrproper Delete the current configuration, and all generated files
1167 # make distclean Remove editor backup files, patch leftover files and the like 1167 # make distclean Remove editor backup files, patch leftover files and the like
1168 1168
1169 # Directories & files removed with 'make clean' 1169 # Directories & files removed with 'make clean'
1170 CLEAN_DIRS += $(MODVERDIR) 1170 CLEAN_DIRS += $(MODVERDIR)
1171 1171
1172 # Directories & files removed with 'make mrproper' 1172 # Directories & files removed with 'make mrproper'
1173 MRPROPER_DIRS += include/config usr/include include/generated \ 1173 MRPROPER_DIRS += include/config usr/include include/generated \
1174 arch/*/include/generated .tmp_objdiff 1174 arch/*/include/generated .tmp_objdiff
1175 MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ 1175 MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
1176 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1176 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1177 signing_key.priv signing_key.x509 x509.genkey \ 1177 signing_key.priv signing_key.x509 x509.genkey \
1178 extra_certificates signing_key.x509.keyid \ 1178 extra_certificates signing_key.x509.keyid \
1179 signing_key.x509.signer 1179 signing_key.x509.signer
1180 1180
1181 # clean - Delete most, but leave enough to build external modules 1181 # clean - Delete most, but leave enough to build external modules
1182 # 1182 #
1183 clean: rm-dirs := $(CLEAN_DIRS) 1183 clean: rm-dirs := $(CLEAN_DIRS)
1184 clean: rm-files := $(CLEAN_FILES) 1184 clean: rm-files := $(CLEAN_FILES)
1185 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1185 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1186 1186
1187 PHONY += $(clean-dirs) clean archclean vmlinuxclean 1187 PHONY += $(clean-dirs) clean archclean vmlinuxclean
1188 $(clean-dirs): 1188 $(clean-dirs):
1189 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1189 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1190 1190
1191 vmlinuxclean: 1191 vmlinuxclean:
1192 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1192 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1193 1193
1194 clean: archclean vmlinuxclean 1194 clean: archclean vmlinuxclean
1195 1195
1196 # mrproper - Delete all generated files, including .config 1196 # mrproper - Delete all generated files, including .config
1197 # 1197 #
1198 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1198 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1199 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1199 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1200 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1200 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1201 1201
1202 PHONY += $(mrproper-dirs) mrproper archmrproper 1202 PHONY += $(mrproper-dirs) mrproper archmrproper
1203 $(mrproper-dirs): 1203 $(mrproper-dirs):
1204 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1204 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1205 1205
1206 mrproper: clean archmrproper $(mrproper-dirs) 1206 mrproper: clean archmrproper $(mrproper-dirs)
1207 $(call cmd,rmdirs) 1207 $(call cmd,rmdirs)
1208 $(call cmd,rmfiles) 1208 $(call cmd,rmfiles)
1209 1209
1210 # distclean 1210 # distclean
1211 # 1211 #
1212 PHONY += distclean 1212 PHONY += distclean
1213 1213
1214 distclean: mrproper 1214 distclean: mrproper
1215 @find $(srctree) $(RCS_FIND_IGNORE) \ 1215 @find $(srctree) $(RCS_FIND_IGNORE) \
1216 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1216 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1217 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1217 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1218 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ 1218 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
1219 -type f -print | xargs rm -f 1219 -type f -print | xargs rm -f
1220 1220
1221 1221
1222 # Packaging of the kernel to various formats 1222 # Packaging of the kernel to various formats
1223 # --------------------------------------------------------------------------- 1223 # ---------------------------------------------------------------------------
1224 # rpm target kept for backward compatibility 1224 # rpm target kept for backward compatibility
1225 package-dir := scripts/package 1225 package-dir := scripts/package
1226 1226
1227 %src-pkg: FORCE 1227 %src-pkg: FORCE
1228 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1228 $(Q)$(MAKE) $(build)=$(package-dir) $@
1229 %pkg: include/config/kernel.release FORCE 1229 %pkg: include/config/kernel.release FORCE
1230 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1230 $(Q)$(MAKE) $(build)=$(package-dir) $@
1231 rpm: include/config/kernel.release FORCE 1231 rpm: include/config/kernel.release FORCE
1232 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1232 $(Q)$(MAKE) $(build)=$(package-dir) $@
1233 1233
1234 1234
1235 # Brief documentation of the typical targets used 1235 # Brief documentation of the typical targets used
1236 # --------------------------------------------------------------------------- 1236 # ---------------------------------------------------------------------------
1237 1237
1238 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1238 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1239 boards := $(sort $(notdir $(boards))) 1239 boards := $(sort $(notdir $(boards)))
1240 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1240 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1241 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1241 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1242 1242
1243 help: 1243 help:
1244 @echo 'Cleaning targets:' 1244 @echo 'Cleaning targets:'
1245 @echo ' clean - Remove most generated files but keep the config and' 1245 @echo ' clean - Remove most generated files but keep the config and'
1246 @echo ' enough build support to build external modules' 1246 @echo ' enough build support to build external modules'
1247 @echo ' mrproper - Remove all generated files + config + various backup files' 1247 @echo ' mrproper - Remove all generated files + config + various backup files'
1248 @echo ' distclean - mrproper + remove editor backup and patch files' 1248 @echo ' distclean - mrproper + remove editor backup and patch files'
1249 @echo '' 1249 @echo ''
1250 @echo 'Configuration targets:' 1250 @echo 'Configuration targets:'
1251 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1251 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1252 @echo '' 1252 @echo ''
1253 @echo 'Other generic targets:' 1253 @echo 'Other generic targets:'
1254 @echo ' all - Build all targets marked with [*]' 1254 @echo ' all - Build all targets marked with [*]'
1255 @echo '* vmlinux - Build the bare kernel' 1255 @echo '* vmlinux - Build the bare kernel'
1256 @echo '* modules - Build all modules' 1256 @echo '* modules - Build all modules'
1257 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1257 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1258 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1258 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1259 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1259 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1260 @echo ' dir/ - Build all files in dir and below' 1260 @echo ' dir/ - Build all files in dir and below'
1261 @echo ' dir/file.[oisS] - Build specified target only' 1261 @echo ' dir/file.[oisS] - Build specified target only'
1262 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1262 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1263 @echo ' (requires a recent binutils and recent build (System.map))' 1263 @echo ' (requires a recent binutils and recent build (System.map))'
1264 @echo ' dir/file.ko - Build module including final link' 1264 @echo ' dir/file.ko - Build module including final link'
1265 @echo ' modules_prepare - Set up for building external modules' 1265 @echo ' modules_prepare - Set up for building external modules'
1266 @echo ' tags/TAGS - Generate tags file for editors' 1266 @echo ' tags/TAGS - Generate tags file for editors'
1267 @echo ' cscope - Generate cscope index' 1267 @echo ' cscope - Generate cscope index'
1268 @echo ' gtags - Generate GNU GLOBAL index' 1268 @echo ' gtags - Generate GNU GLOBAL index'
1269 @echo ' kernelrelease - Output the release version string (use with make -s)' 1269 @echo ' kernelrelease - Output the release version string (use with make -s)'
1270 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1270 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)'
1271 @echo ' image_name - Output the image name (use with make -s)' 1271 @echo ' image_name - Output the image name (use with make -s)'
1272 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1272 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1273 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1273 echo ' (default: $(INSTALL_HDR_PATH))'; \
1274 echo '' 1274 echo ''
1275 @echo 'Static analysers' 1275 @echo 'Static analysers'
1276 @echo ' checkstack - Generate a list of stack hogs' 1276 @echo ' checkstack - Generate a list of stack hogs'
1277 @echo ' namespacecheck - Name space analysis on compiled kernel' 1277 @echo ' namespacecheck - Name space analysis on compiled kernel'
1278 @echo ' versioncheck - Sanity check on version.h usage' 1278 @echo ' versioncheck - Sanity check on version.h usage'
1279 @echo ' includecheck - Check for duplicate included header files' 1279 @echo ' includecheck - Check for duplicate included header files'
1280 @echo ' export_report - List the usages of all exported symbols' 1280 @echo ' export_report - List the usages of all exported symbols'
1281 @echo ' headers_check - Sanity check on exported headers' 1281 @echo ' headers_check - Sanity check on exported headers'
1282 @echo ' headerdep - Detect inclusion cycles in headers' 1282 @echo ' headerdep - Detect inclusion cycles in headers'
1283 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1283 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1284 @echo '' 1284 @echo ''
1285 @echo 'Kernel selftest' 1285 @echo 'Kernel selftest'
1286 @echo ' kselftest - Build and run kernel selftest (run as root)' 1286 @echo ' kselftest - Build and run kernel selftest (run as root)'
1287 @echo ' Build, install, and boot kernel before' 1287 @echo ' Build, install, and boot kernel before'
1288 @echo ' running kselftest on it' 1288 @echo ' running kselftest on it'
1289 @echo '' 1289 @echo ''
1290 @echo 'Kernel packaging:' 1290 @echo 'Kernel packaging:'
1291 @$(MAKE) $(build)=$(package-dir) help 1291 @$(MAKE) $(build)=$(package-dir) help
1292 @echo '' 1292 @echo ''
1293 @echo 'Documentation targets:' 1293 @echo 'Documentation targets:'
1294 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1294 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1295 @echo '' 1295 @echo ''
1296 @echo 'Architecture specific targets ($(SRCARCH)):' 1296 @echo 'Architecture specific targets ($(SRCARCH)):'
1297 @$(if $(archhelp),$(archhelp),\ 1297 @$(if $(archhelp),$(archhelp),\
1298 echo ' No architecture specific help defined for $(SRCARCH)') 1298 echo ' No architecture specific help defined for $(SRCARCH)')
1299 @echo '' 1299 @echo ''
1300 @$(if $(boards), \ 1300 @$(if $(boards), \
1301 $(foreach b, $(boards), \ 1301 $(foreach b, $(boards), \
1302 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1302 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1303 echo '') 1303 echo '')
1304 @$(if $(board-dirs), \ 1304 @$(if $(board-dirs), \
1305 $(foreach b, $(board-dirs), \ 1305 $(foreach b, $(board-dirs), \
1306 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1306 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1307 printf " %-16s - Show all of the above\\n" help-boards; \ 1307 printf " %-16s - Show all of the above\\n" help-boards; \
1308 echo '') 1308 echo '')
1309 1309
1310 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1310 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1311 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1311 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1312 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1312 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1313 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1313 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1314 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1314 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1315 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1315 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1316 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1316 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1317 @echo ' 1: warnings which may be relevant and do not occur too often' 1317 @echo ' 1: warnings which may be relevant and do not occur too often'
1318 @echo ' 2: warnings which occur quite often but may still be relevant' 1318 @echo ' 2: warnings which occur quite often but may still be relevant'
1319 @echo ' 3: more obscure warnings, can most likely be ignored' 1319 @echo ' 3: more obscure warnings, can most likely be ignored'
1320 @echo ' Multiple levels can be combined with W=12 or W=123' 1320 @echo ' Multiple levels can be combined with W=12 or W=123'
1321 @echo '' 1321 @echo ''
1322 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1322 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1323 @echo 'For further info see the ./README file' 1323 @echo 'For further info see the ./README file'
1324 1324
1325 1325
1326 help-board-dirs := $(addprefix help-,$(board-dirs)) 1326 help-board-dirs := $(addprefix help-,$(board-dirs))
1327 1327
1328 help-boards: $(help-board-dirs) 1328 help-boards: $(help-board-dirs)
1329 1329
1330 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1330 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)))
1331 1331
1332 $(help-board-dirs): help-%: 1332 $(help-board-dirs): help-%:
1333 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1333 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1334 @$(if $(boards-per-dir), \ 1334 @$(if $(boards-per-dir), \
1335 $(foreach b, $(boards-per-dir), \ 1335 $(foreach b, $(boards-per-dir), \
1336 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1336 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1337 echo '') 1337 echo '')
1338 1338
1339 1339
1340 # Documentation targets 1340 # Documentation targets
1341 # --------------------------------------------------------------------------- 1341 # ---------------------------------------------------------------------------
1342 %docs: scripts_basic FORCE 1342 %docs: scripts_basic FORCE
1343 $(Q)$(MAKE) $(build)=scripts build_docproc 1343 $(Q)$(MAKE) $(build)=scripts build_docproc
1344 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1344 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1345 1345
1346 else # KBUILD_EXTMOD 1346 else # KBUILD_EXTMOD
1347 1347
1348 ### 1348 ###
1349 # External module support. 1349 # External module support.
1350 # When building external modules the kernel used as basis is considered 1350 # When building external modules the kernel used as basis is considered
1351 # read-only, and no consistency checks are made and the make 1351 # read-only, and no consistency checks are made and the make
1352 # system is not used on the basis kernel. If updates are required 1352 # system is not used on the basis kernel. If updates are required
1353 # in the basis kernel ordinary make commands (without M=...) must 1353 # in the basis kernel ordinary make commands (without M=...) must
1354 # be used. 1354 # be used.
1355 # 1355 #
1356 # The following are the only valid targets when building external 1356 # The following are the only valid targets when building external
1357 # modules. 1357 # modules.
1358 # make M=dir clean Delete all automatically generated files 1358 # make M=dir clean Delete all automatically generated files
1359 # make M=dir modules Make all modules in specified dir 1359 # make M=dir modules Make all modules in specified dir
1360 # make M=dir Same as 'make M=dir modules' 1360 # make M=dir Same as 'make M=dir modules'
1361 # make M=dir modules_install 1361 # make M=dir modules_install
1362 # Install the modules built in the module directory 1362 # Install the modules built in the module directory
1363 # Assumes install directory is already created 1363 # Assumes install directory is already created
1364 1364
1365 # We are always building modules 1365 # We are always building modules
1366 KBUILD_MODULES := 1 1366 KBUILD_MODULES := 1
1367 PHONY += crmodverdir 1367 PHONY += crmodverdir
1368 crmodverdir: 1368 crmodverdir:
1369 $(cmd_crmodverdir) 1369 $(cmd_crmodverdir)
1370 1370
1371 PHONY += $(objtree)/Module.symvers 1371 PHONY += $(objtree)/Module.symvers
1372 $(objtree)/Module.symvers: 1372 $(objtree)/Module.symvers:
1373 @test -e $(objtree)/Module.symvers || ( \ 1373 @test -e $(objtree)/Module.symvers || ( \
1374 echo; \ 1374 echo; \
1375 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1375 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1376 echo " is missing; modules will have no dependencies and modversions."; \ 1376 echo " is missing; modules will have no dependencies and modversions."; \
1377 echo ) 1377 echo )
1378 1378
1379 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1379 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1380 PHONY += $(module-dirs) modules 1380 PHONY += $(module-dirs) modules
1381 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1381 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1382 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1382 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1383 1383
1384 modules: $(module-dirs) 1384 modules: $(module-dirs)
1385 @$(kecho) ' Building modules, stage 2.'; 1385 @$(kecho) ' Building modules, stage 2.';
1386 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1386 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1387 1387
1388 PHONY += modules_install 1388 PHONY += modules_install
1389 modules_install: _emodinst_ _emodinst_post 1389 modules_install: _emodinst_ _emodinst_post
1390 1390
1391 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1391 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1392 PHONY += _emodinst_ 1392 PHONY += _emodinst_
1393 _emodinst_: 1393 _emodinst_:
1394 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1394 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1395 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1395 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1396 1396
1397 PHONY += _emodinst_post 1397 PHONY += _emodinst_post
1398 _emodinst_post: _emodinst_ 1398 _emodinst_post: _emodinst_
1399 $(call cmd,depmod) 1399 $(call cmd,depmod)
1400 1400
1401 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1401 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1402 1402
1403 PHONY += $(clean-dirs) clean 1403 PHONY += $(clean-dirs) clean
1404 $(clean-dirs): 1404 $(clean-dirs):
1405 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1405 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1406 1406
1407 clean: rm-dirs := $(MODVERDIR) 1407 clean: rm-dirs := $(MODVERDIR)
1408 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1408 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1409 1409
1410 help: 1410 help:
1411 @echo ' Building external modules.' 1411 @echo ' Building external modules.'
1412 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1412 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1413 @echo '' 1413 @echo ''
1414 @echo ' modules - default target, build the module(s)' 1414 @echo ' modules - default target, build the module(s)'
1415 @echo ' modules_install - install the module' 1415 @echo ' modules_install - install the module'
1416 @echo ' clean - remove generated files in module directory only' 1416 @echo ' clean - remove generated files in module directory only'
1417 @echo '' 1417 @echo ''
1418 1418
1419 # Dummies... 1419 # Dummies...
1420 PHONY += prepare scripts 1420 PHONY += prepare scripts
1421 prepare: ; 1421 prepare: ;
1422 scripts: ; 1422 scripts: ;
1423 endif # KBUILD_EXTMOD 1423 endif # KBUILD_EXTMOD
1424 1424
1425 clean: $(clean-dirs) 1425 clean: $(clean-dirs)
1426 $(call cmd,rmdirs) 1426 $(call cmd,rmdirs)
1427 $(call cmd,rmfiles) 1427 $(call cmd,rmfiles)
1428 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1428 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1429 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1429 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1430 -o -name '*.ko.*' \ 1430 -o -name '*.ko.*' \
1431 -o -name '*.dwo' \ 1431 -o -name '*.dwo' \
1432 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1432 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1433 -o -name '*.symtypes' -o -name 'modules.order' \ 1433 -o -name '*.symtypes' -o -name 'modules.order' \
1434 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1434 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1435 -o -name '*.gcno' \) -type f -print | xargs rm -f 1435 -o -name '*.gcno' \) -type f -print | xargs rm -f
1436 1436
1437 # Generate tags for editors 1437 # Generate tags for editors
1438 # --------------------------------------------------------------------------- 1438 # ---------------------------------------------------------------------------
1439 quiet_cmd_tags = GEN $@ 1439 quiet_cmd_tags = GEN $@
1440 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1440 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1441 1441
1442 tags TAGS cscope gtags: FORCE 1442 tags TAGS cscope gtags: FORCE
1443 $(call cmd,tags) 1443 $(call cmd,tags)
1444 1444
1445 # Scripts to check various things for consistency 1445 # Scripts to check various things for consistency
1446 # --------------------------------------------------------------------------- 1446 # ---------------------------------------------------------------------------
1447 1447
1448 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 1448 PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1449 1449
1450 includecheck: 1450 includecheck:
1451 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1451 find $(srctree)/* $(RCS_FIND_IGNORE) \
1452 -name '*.[hcS]' -type f -print | sort \ 1452 -name '*.[hcS]' -type f -print | sort \
1453 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1453 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1454 1454
1455 versioncheck: 1455 versioncheck:
1456 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1456 find $(srctree)/* $(RCS_FIND_IGNORE) \
1457 -name '*.[hcS]' -type f -print | sort \ 1457 -name '*.[hcS]' -type f -print | sort \
1458 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1458 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1459 1459
1460 coccicheck: 1460 coccicheck:
1461 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1461 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1462 1462
1463 namespacecheck: 1463 namespacecheck:
1464 $(PERL) $(srctree)/scripts/namespace.pl 1464 $(PERL) $(srctree)/scripts/namespace.pl
1465 1465
1466 export_report: 1466 export_report:
1467 $(PERL) $(srctree)/scripts/export_report.pl 1467 $(PERL) $(srctree)/scripts/export_report.pl
1468 1468
1469 endif #ifeq ($(config-targets),1) 1469 endif #ifeq ($(config-targets),1)
1470 endif #ifeq ($(mixed-targets),1) 1470 endif #ifeq ($(mixed-targets),1)
1471 1471
1472 PHONY += checkstack kernelrelease kernelversion image_name 1472 PHONY += checkstack kernelrelease kernelversion image_name
1473 1473
1474 # UML needs a little special treatment here. It wants to use the host 1474 # UML needs a little special treatment here. It wants to use the host
1475 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1475 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1476 # else wants $(ARCH), including people doing cross-builds, which means 1476 # else wants $(ARCH), including people doing cross-builds, which means
1477 # that $(SUBARCH) doesn't work here. 1477 # that $(SUBARCH) doesn't work here.
1478 ifeq ($(ARCH), um) 1478 ifeq ($(ARCH), um)
1479 CHECKSTACK_ARCH := $(SUBARCH) 1479 CHECKSTACK_ARCH := $(SUBARCH)
1480 else 1480 else
1481 CHECKSTACK_ARCH := $(ARCH) 1481 CHECKSTACK_ARCH := $(ARCH)
1482 endif 1482 endif
1483 checkstack: 1483 checkstack:
1484 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1484 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1485 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1485 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1486 1486
1487 kernelrelease: 1487 kernelrelease:
1488 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1488 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1489 1489
1490 kernelversion: 1490 kernelversion:
1491 @echo $(KERNELVERSION) 1491 @echo $(KERNELVERSION)
1492 1492
1493 image_name: 1493 image_name:
1494 @echo $(KBUILD_IMAGE) 1494 @echo $(KBUILD_IMAGE)
1495 1495
1496 # Clear a bunch of variables before executing the submake 1496 # Clear a bunch of variables before executing the submake
1497 tools/: FORCE 1497 tools/: FORCE
1498 $(Q)mkdir -p $(objtree)/tools 1498 $(Q)mkdir -p $(objtree)/tools
1499 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ 1499 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/
1500 1500
1501 tools/%: FORCE 1501 tools/%: FORCE
1502 $(Q)mkdir -p $(objtree)/tools 1502 $(Q)mkdir -p $(objtree)/tools
1503 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* 1503 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*
1504 1504
1505 # Single targets 1505 # Single targets
1506 # --------------------------------------------------------------------------- 1506 # ---------------------------------------------------------------------------
1507 # Single targets are compatible with: 1507 # Single targets are compatible with:
1508 # - build with mixed source and output 1508 # - build with mixed source and output
1509 # - build with separate output dir 'make O=...' 1509 # - build with separate output dir 'make O=...'
1510 # - external modules 1510 # - external modules
1511 # 1511 #
1512 # target-dir => where to store outputfile 1512 # target-dir => where to store outputfile
1513 # build-dir => directory in kernel source tree to use 1513 # build-dir => directory in kernel source tree to use
1514 1514
1515 ifeq ($(KBUILD_EXTMOD),) 1515 ifeq ($(KBUILD_EXTMOD),)
1516 build-dir = $(patsubst %/,%,$(dir $@)) 1516 build-dir = $(patsubst %/,%,$(dir $@))
1517 target-dir = $(dir $@) 1517 target-dir = $(dir $@)
1518 else 1518 else
1519 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1519 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1520 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1520 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1521 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1521 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1522 endif 1522 endif
1523 1523
1524 %.s: %.c prepare scripts FORCE 1524 %.s: %.c prepare scripts FORCE
1525 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1525 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1526 %.i: %.c prepare scripts FORCE 1526 %.i: %.c prepare scripts FORCE
1527 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1527 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1528 %.o: %.c prepare scripts FORCE 1528 %.o: %.c prepare scripts FORCE
1529 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1529 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1530 %.lst: %.c prepare scripts FORCE 1530 %.lst: %.c prepare scripts FORCE
1531 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1531 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1532 %.s: %.S prepare scripts FORCE 1532 %.s: %.S prepare scripts FORCE
1533 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1533 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1534 %.o: %.S prepare scripts FORCE 1534 %.o: %.S prepare scripts FORCE
1535 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1535 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1536 %.symtypes: %.c prepare scripts FORCE 1536 %.symtypes: %.c prepare scripts FORCE
1537 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1537 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1538 1538
1539 # Modules 1539 # Modules
1540 /: prepare scripts FORCE 1540 /: prepare scripts FORCE
1541 $(cmd_crmodverdir) 1541 $(cmd_crmodverdir)
1542 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1542 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1543 $(build)=$(build-dir) 1543 $(build)=$(build-dir)
1544 # Make sure the latest headers are built for Documentation 1544 # Make sure the latest headers are built for Documentation
1545 Documentation/: headers_install 1545 Documentation/: headers_install
1546 %/: prepare scripts FORCE 1546 %/: prepare scripts FORCE
1547 $(cmd_crmodverdir) 1547 $(cmd_crmodverdir)
1548 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1548 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1549 $(build)=$(build-dir) 1549 $(build)=$(build-dir)
1550 %.ko: prepare scripts FORCE 1550 %.ko: prepare scripts FORCE
1551 $(cmd_crmodverdir) 1551 $(cmd_crmodverdir)
1552 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1552 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1553 $(build)=$(build-dir) $(@:.ko=.o) 1553 $(build)=$(build-dir) $(@:.ko=.o)
1554 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1554 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1555 1555
1556 # FIXME Should go into a make.lib or something 1556 # FIXME Should go into a make.lib or something
1557 # =========================================================================== 1557 # ===========================================================================
1558 1558
1559 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1559 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1560 cmd_rmdirs = rm -rf $(rm-dirs) 1560 cmd_rmdirs = rm -rf $(rm-dirs)
1561 1561
1562 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1562 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1563 cmd_rmfiles = rm -f $(rm-files) 1563 cmd_rmfiles = rm -f $(rm-files)
1564 1564
1565 # Run depmod only if we have System.map and depmod is executable 1565 # Run depmod only if we have System.map and depmod is executable
1566 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1566 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1567 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1567 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
1568 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 1568 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
1569 1569
1570 # Create temporary dir for module support files 1570 # Create temporary dir for module support files
1571 # clean it up only when building all modules 1571 # clean it up only when building all modules
1572 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1572 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1573 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1573 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1574 1574
1575 # read all saved command lines 1575 # read all saved command lines
1576 1576
1577 targets := $(wildcard $(sort $(targets))) 1577 targets := $(wildcard $(sort $(targets)))
1578 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1578 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1579 1579
1580 ifneq ($(cmd_files),) 1580 ifneq ($(cmd_files),)
1581 $(cmd_files): ; # Do not try to update included dependency files 1581 $(cmd_files): ; # Do not try to update included dependency files
1582 include $(cmd_files) 1582 include $(cmd_files)
1583 endif 1583 endif
1584 1584
1585 endif # skip-makefile 1585 endif # skip-makefile
1586 1586
1587 PHONY += FORCE 1587 PHONY += FORCE
1588 FORCE: 1588 FORCE:
1589 1589
1590 # Declare the contents of the .PHONY variable as phony. We keep that 1590 # Declare the contents of the .PHONY variable as phony. We keep that
1591 # information in a variable so we can use it in if_changed and friends. 1591 # information in a variable so we can use it in if_changed and friends.
1592 .PHONY: $(PHONY) 1592 .PHONY: $(PHONY)
1593 1593