Eric Lee / smarc-ti-linux-kernel

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Commit 9eccca0843205f87c00404b663188b88eb248051

Authored by Linus Torvalds
1 parent 1711fd9add
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 4.0-rc3

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

1 VERSION = 4 1 VERSION = 4
2 PATCHLEVEL = 0 2 PATCHLEVEL = 0
3 SUBLEVEL = 0 3 SUBLEVEL = 0
4 EXTRAVERSION = -rc2 4 EXTRAVERSION = -rc3
5 NAME = Hurr durr I'ma sheep 5 NAME = Hurr durr I'ma sheep
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 CFLAGS_KASAN 426 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KASAN
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,$(MAKECMDGOALS)),)
504 config-targets := 1 504 config-targets := 1
505 ifneq ($(words $(MAKECMDGOALS)),1) 505 ifneq ($(words $(MAKECMDGOALS)),1)
506 mixed-targets := 1 506 mixed-targets := 1
507 endif 507 endif
508 endif 508 endif
509 endif 509 endif
510 510
511 ifeq ($(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 ifndef CC_FLAGS_FTRACE 729 ifndef CC_FLAGS_FTRACE
730 CC_FLAGS_FTRACE := -pg 730 CC_FLAGS_FTRACE := -pg
731 endif 731 endif
732 export CC_FLAGS_FTRACE 732 export CC_FLAGS_FTRACE
733 ifdef CONFIG_HAVE_FENTRY 733 ifdef CONFIG_HAVE_FENTRY
734 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 734 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
735 endif 735 endif
736 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) 736 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
737 KBUILD_AFLAGS += $(CC_USING_FENTRY) 737 KBUILD_AFLAGS += $(CC_USING_FENTRY)
738 ifdef CONFIG_DYNAMIC_FTRACE 738 ifdef CONFIG_DYNAMIC_FTRACE
739 ifdef CONFIG_HAVE_C_RECORDMCOUNT 739 ifdef CONFIG_HAVE_C_RECORDMCOUNT
740 BUILD_C_RECORDMCOUNT := y 740 BUILD_C_RECORDMCOUNT := y
741 export BUILD_C_RECORDMCOUNT 741 export BUILD_C_RECORDMCOUNT
742 endif 742 endif
743 endif 743 endif
744 endif 744 endif
745 745
746 # We trigger additional mismatches with less inlining 746 # We trigger additional mismatches with less inlining
747 ifdef CONFIG_DEBUG_SECTION_MISMATCH 747 ifdef CONFIG_DEBUG_SECTION_MISMATCH
748 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 748 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
749 endif 749 endif
750 750
751 # arch Makefile may override CC so keep this after arch Makefile is included 751 # arch Makefile may override CC so keep this after arch Makefile is included
752 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 752 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
753 CHECKFLAGS += $(NOSTDINC_FLAGS) 753 CHECKFLAGS += $(NOSTDINC_FLAGS)
754 754
755 # warn about C99 declaration after statement 755 # warn about C99 declaration after statement
756 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 756 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
757 757
758 # disable pointer signed / unsigned warnings in gcc 4.0 758 # disable pointer signed / unsigned warnings in gcc 4.0
759 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 759 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
760 760
761 # disable invalid "can't wrap" optimizations for signed / pointers 761 # disable invalid "can't wrap" optimizations for signed / pointers
762 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 762 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
763 763
764 # conserve stack if available 764 # conserve stack if available
765 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 765 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
766 766
767 # disallow errors like 'EXPORT_GPL(foo);' with missing header 767 # disallow errors like 'EXPORT_GPL(foo);' with missing header
768 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 768 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
769 769
770 # require functions to have arguments in prototypes, not empty 'int foo()' 770 # require functions to have arguments in prototypes, not empty 'int foo()'
771 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 771 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
772 772
773 # Prohibit date/time macros, which would make the build non-deterministic 773 # Prohibit date/time macros, which would make the build non-deterministic
774 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 774 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
775 775
776 # use the deterministic mode of AR if available 776 # use the deterministic mode of AR if available
777 KBUILD_ARFLAGS := $(call ar-option,D) 777 KBUILD_ARFLAGS := $(call ar-option,D)
778 778
779 # check for 'asm goto' 779 # check for 'asm goto'
780 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) 780 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
781 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 781 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
782 endif 782 endif
783 783
784 include $(srctree)/scripts/Makefile.kasan 784 include $(srctree)/scripts/Makefile.kasan
785 include $(srctree)/scripts/Makefile.extrawarn 785 include $(srctree)/scripts/Makefile.extrawarn
786 786
787 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 787 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
788 KBUILD_CPPFLAGS += $(KCPPFLAGS) 788 KBUILD_CPPFLAGS += $(KCPPFLAGS)
789 KBUILD_AFLAGS += $(KAFLAGS) 789 KBUILD_AFLAGS += $(KAFLAGS)
790 KBUILD_CFLAGS += $(KCFLAGS) 790 KBUILD_CFLAGS += $(KCFLAGS)
791 791
792 # Use --build-id when available. 792 # Use --build-id when available.
793 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 793 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
794 $(call cc-ldoption, -Wl$(comma)--build-id,)) 794 $(call cc-ldoption, -Wl$(comma)--build-id,))
795 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 795 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
796 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 796 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
797 797
798 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 798 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
799 LDFLAGS_vmlinux += $(call ld-option, -X,) 799 LDFLAGS_vmlinux += $(call ld-option, -X,)
800 endif 800 endif
801 801
802 # Default kernel image to build when no specific target is given. 802 # Default kernel image to build when no specific target is given.
803 # KBUILD_IMAGE may be overruled on the command line or 803 # KBUILD_IMAGE may be overruled on the command line or
804 # set in the environment 804 # set in the environment
805 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 805 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
806 # this default value 806 # this default value
807 export KBUILD_IMAGE ?= vmlinux 807 export KBUILD_IMAGE ?= vmlinux
808 808
809 # 809 #
810 # INSTALL_PATH specifies where to place the updated kernel and system map 810 # INSTALL_PATH specifies where to place the updated kernel and system map
811 # images. Default is /boot, but you can set it to other values 811 # images. Default is /boot, but you can set it to other values
812 export INSTALL_PATH ?= /boot 812 export INSTALL_PATH ?= /boot
813 813
814 # 814 #
815 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 815 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
816 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 816 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
817 # an argument if needed. Otherwise it defaults to the kernel install path 817 # an argument if needed. Otherwise it defaults to the kernel install path
818 # 818 #
819 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 819 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
820 820
821 # 821 #
822 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 822 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
823 # relocations required by build roots. This is not defined in the 823 # relocations required by build roots. This is not defined in the
824 # makefile but the argument can be passed to make if needed. 824 # makefile but the argument can be passed to make if needed.
825 # 825 #
826 826
827 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 827 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
828 export MODLIB 828 export MODLIB
829 829
830 # 830 #
831 # INSTALL_MOD_STRIP, if defined, will cause modules to be 831 # INSTALL_MOD_STRIP, if defined, will cause modules to be
832 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 832 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
833 # the default option --strip-debug will be used. Otherwise, 833 # the default option --strip-debug will be used. Otherwise,
834 # INSTALL_MOD_STRIP value will be used as the options to the strip command. 834 # INSTALL_MOD_STRIP value will be used as the options to the strip command.
835 835
836 ifdef INSTALL_MOD_STRIP 836 ifdef INSTALL_MOD_STRIP
837 ifeq ($(INSTALL_MOD_STRIP),1) 837 ifeq ($(INSTALL_MOD_STRIP),1)
838 mod_strip_cmd = $(STRIP) --strip-debug 838 mod_strip_cmd = $(STRIP) --strip-debug
839 else 839 else
840 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 840 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
841 endif # INSTALL_MOD_STRIP=1 841 endif # INSTALL_MOD_STRIP=1
842 else 842 else
843 mod_strip_cmd = true 843 mod_strip_cmd = true
844 endif # INSTALL_MOD_STRIP 844 endif # INSTALL_MOD_STRIP
845 export mod_strip_cmd 845 export mod_strip_cmd
846 846
847 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 847 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
848 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 848 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
849 # or CONFIG_MODULE_COMPRESS_XZ. 849 # or CONFIG_MODULE_COMPRESS_XZ.
850 850
851 mod_compress_cmd = true 851 mod_compress_cmd = true
852 ifdef CONFIG_MODULE_COMPRESS 852 ifdef CONFIG_MODULE_COMPRESS
853 ifdef CONFIG_MODULE_COMPRESS_GZIP 853 ifdef CONFIG_MODULE_COMPRESS_GZIP
854 mod_compress_cmd = gzip -n 854 mod_compress_cmd = gzip -n
855 endif # CONFIG_MODULE_COMPRESS_GZIP 855 endif # CONFIG_MODULE_COMPRESS_GZIP
856 ifdef CONFIG_MODULE_COMPRESS_XZ 856 ifdef CONFIG_MODULE_COMPRESS_XZ
857 mod_compress_cmd = xz 857 mod_compress_cmd = xz
858 endif # CONFIG_MODULE_COMPRESS_XZ 858 endif # CONFIG_MODULE_COMPRESS_XZ
859 endif # CONFIG_MODULE_COMPRESS 859 endif # CONFIG_MODULE_COMPRESS
860 export mod_compress_cmd 860 export mod_compress_cmd
861 861
862 # Select initial ramdisk compression format, default is gzip(1). 862 # Select initial ramdisk compression format, default is gzip(1).
863 # This shall be used by the dracut(8) tool while creating an initramfs image. 863 # This shall be used by the dracut(8) tool while creating an initramfs image.
864 # 864 #
865 INITRD_COMPRESS-y := gzip 865 INITRD_COMPRESS-y := gzip
866 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 866 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
867 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma 867 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
868 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz 868 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
869 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo 869 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
870 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 870 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
871 # do not export INITRD_COMPRESS, since we didn't actually 871 # do not export INITRD_COMPRESS, since we didn't actually
872 # choose a sane default compression above. 872 # choose a sane default compression above.
873 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 873 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
874 874
875 ifdef CONFIG_MODULE_SIG_ALL 875 ifdef CONFIG_MODULE_SIG_ALL
876 MODSECKEY = ./signing_key.priv 876 MODSECKEY = ./signing_key.priv
877 MODPUBKEY = ./signing_key.x509 877 MODPUBKEY = ./signing_key.x509
878 export MODPUBKEY 878 export MODPUBKEY
879 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) 879 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY)
880 else 880 else
881 mod_sign_cmd = true 881 mod_sign_cmd = true
882 endif 882 endif
883 export mod_sign_cmd 883 export mod_sign_cmd
884 884
885 885
886 ifeq ($(KBUILD_EXTMOD),) 886 ifeq ($(KBUILD_EXTMOD),)
887 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 887 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
888 888
889 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 889 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
890 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 890 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
891 $(net-y) $(net-m) $(libs-y) $(libs-m))) 891 $(net-y) $(net-m) $(libs-y) $(libs-m)))
892 892
893 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 893 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
894 $(init-) $(core-) $(drivers-) $(net-) $(libs-)))) 894 $(init-) $(core-) $(drivers-) $(net-) $(libs-))))
895 895
896 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 896 init-y := $(patsubst %/, %/built-in.o, $(init-y))
897 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 897 core-y := $(patsubst %/, %/built-in.o, $(core-y))
898 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 898 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
899 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 899 net-y := $(patsubst %/, %/built-in.o, $(net-y))
900 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 900 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
901 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 901 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
902 libs-y := $(libs-y1) $(libs-y2) 902 libs-y := $(libs-y1) $(libs-y2)
903 903
904 # Externally visible symbols (used by link-vmlinux.sh) 904 # Externally visible symbols (used by link-vmlinux.sh)
905 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) 905 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
906 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) 906 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
907 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 907 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
908 export LDFLAGS_vmlinux 908 export LDFLAGS_vmlinux
909 # used by scripts/pacmage/Makefile 909 # used by scripts/pacmage/Makefile
910 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) 910 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt)
911 911
912 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) 912 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
913 913
914 # Final link of vmlinux 914 # Final link of vmlinux
915 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) 915 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
916 quiet_cmd_link-vmlinux = LINK $@ 916 quiet_cmd_link-vmlinux = LINK $@
917 917
918 # Include targets which we want to 918 # Include targets which we want to
919 # execute if the rest of the kernel build went well. 919 # execute if the rest of the kernel build went well.
920 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE 920 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
921 ifdef CONFIG_HEADERS_CHECK 921 ifdef CONFIG_HEADERS_CHECK
922 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 922 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
923 endif 923 endif
924 ifdef CONFIG_SAMPLES 924 ifdef CONFIG_SAMPLES
925 $(Q)$(MAKE) $(build)=samples 925 $(Q)$(MAKE) $(build)=samples
926 endif 926 endif
927 ifdef CONFIG_BUILD_DOCSRC 927 ifdef CONFIG_BUILD_DOCSRC
928 $(Q)$(MAKE) $(build)=Documentation 928 $(Q)$(MAKE) $(build)=Documentation
929 endif 929 endif
930 ifdef CONFIG_GDB_SCRIPTS 930 ifdef CONFIG_GDB_SCRIPTS
931 $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py 931 $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py
932 endif 932 endif
933 +$(call if_changed,link-vmlinux) 933 +$(call if_changed,link-vmlinux)
934 934
935 # The actual objects are generated when descending, 935 # The actual objects are generated when descending,
936 # make sure no implicit rule kicks in 936 # make sure no implicit rule kicks in
937 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 937 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
938 938
939 # Handle descending into subdirectories listed in $(vmlinux-dirs) 939 # Handle descending into subdirectories listed in $(vmlinux-dirs)
940 # Preset locale variables to speed up the build process. Limit locale 940 # Preset locale variables to speed up the build process. Limit locale
941 # tweaks to this spot to avoid wrong language settings when running 941 # tweaks to this spot to avoid wrong language settings when running
942 # make menuconfig etc. 942 # make menuconfig etc.
943 # Error messages still appears in the original language 943 # Error messages still appears in the original language
944 944
945 PHONY += $(vmlinux-dirs) 945 PHONY += $(vmlinux-dirs)
946 $(vmlinux-dirs): prepare scripts 946 $(vmlinux-dirs): prepare scripts
947 $(Q)$(MAKE) $(build)=$@ 947 $(Q)$(MAKE) $(build)=$@
948 948
949 define filechk_kernel.release 949 define filechk_kernel.release
950 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 950 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
951 endef 951 endef
952 952
953 # Store (new) KERNELRELEASE string in include/config/kernel.release 953 # Store (new) KERNELRELEASE string in include/config/kernel.release
954 include/config/kernel.release: include/config/auto.conf FORCE 954 include/config/kernel.release: include/config/auto.conf FORCE
955 $(call filechk,kernel.release) 955 $(call filechk,kernel.release)
956 956
957 957
958 # Things we need to do before we recursively start building the kernel 958 # Things we need to do before we recursively start building the kernel
959 # or the modules are listed in "prepare". 959 # or the modules are listed in "prepare".
960 # A multi level approach is used. prepareN is processed before prepareN-1. 960 # A multi level approach is used. prepareN is processed before prepareN-1.
961 # archprepare is used in arch Makefiles and when processed asm symlink, 961 # archprepare is used in arch Makefiles and when processed asm symlink,
962 # version.h and scripts_basic is processed / created. 962 # version.h and scripts_basic is processed / created.
963 963
964 # Listed in dependency order 964 # Listed in dependency order
965 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 965 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
966 966
967 # prepare3 is used to check if we are building in a separate output directory, 967 # prepare3 is used to check if we are building in a separate output directory,
968 # and if so do: 968 # and if so do:
969 # 1) Check that make has not been executed in the kernel src $(srctree) 969 # 1) Check that make has not been executed in the kernel src $(srctree)
970 prepare3: include/config/kernel.release 970 prepare3: include/config/kernel.release
971 ifneq ($(KBUILD_SRC),) 971 ifneq ($(KBUILD_SRC),)
972 @$(kecho) ' Using $(srctree) as source for kernel' 972 @$(kecho) ' Using $(srctree) as source for kernel'
973 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 973 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
974 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 974 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
975 echo >&2 " in the '$(srctree)' directory.";\ 975 echo >&2 " in the '$(srctree)' directory.";\
976 /bin/false; \ 976 /bin/false; \
977 fi; 977 fi;
978 endif 978 endif
979 979
980 # prepare2 creates a makefile if using a separate output directory 980 # prepare2 creates a makefile if using a separate output directory
981 prepare2: prepare3 outputmakefile asm-generic 981 prepare2: prepare3 outputmakefile asm-generic
982 982
983 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ 983 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
984 include/config/auto.conf 984 include/config/auto.conf
985 $(cmd_crmodverdir) 985 $(cmd_crmodverdir)
986 986
987 archprepare: archheaders archscripts prepare1 scripts_basic 987 archprepare: archheaders archscripts prepare1 scripts_basic
988 988
989 prepare0: archprepare FORCE 989 prepare0: archprepare FORCE
990 $(Q)$(MAKE) $(build)=. 990 $(Q)$(MAKE) $(build)=.
991 991
992 # All the preparing.. 992 # All the preparing..
993 prepare: prepare0 993 prepare: prepare0
994 994
995 # Generate some files 995 # Generate some files
996 # --------------------------------------------------------------------------- 996 # ---------------------------------------------------------------------------
997 997
998 # KERNELRELEASE can change from a few different places, meaning version.h 998 # KERNELRELEASE can change from a few different places, meaning version.h
999 # needs to be updated, so this check is forced on all builds 999 # needs to be updated, so this check is forced on all builds
1000 1000
1001 uts_len := 64 1001 uts_len := 64
1002 define filechk_utsrelease.h 1002 define filechk_utsrelease.h
1003 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1003 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
1004 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1004 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
1005 exit 1; \ 1005 exit 1; \
1006 fi; \ 1006 fi; \
1007 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1007 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1008 endef 1008 endef
1009 1009
1010 define filechk_version.h 1010 define filechk_version.h
1011 (echo \#define LINUX_VERSION_CODE $(shell \ 1011 (echo \#define LINUX_VERSION_CODE $(shell \
1012 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1012 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
1013 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1013 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1014 endef 1014 endef
1015 1015
1016 $(version_h): $(srctree)/Makefile FORCE 1016 $(version_h): $(srctree)/Makefile FORCE
1017 $(call filechk,version.h) 1017 $(call filechk,version.h)
1018 $(Q)rm -f $(old_version_h) 1018 $(Q)rm -f $(old_version_h)
1019 1019
1020 include/generated/utsrelease.h: include/config/kernel.release FORCE 1020 include/generated/utsrelease.h: include/config/kernel.release FORCE
1021 $(call filechk,utsrelease.h) 1021 $(call filechk,utsrelease.h)
1022 1022
1023 PHONY += headerdep 1023 PHONY += headerdep
1024 headerdep: 1024 headerdep:
1025 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1025 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
1026 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1026 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
1027 1027
1028 # --------------------------------------------------------------------------- 1028 # ---------------------------------------------------------------------------
1029 1029
1030 PHONY += depend dep 1030 PHONY += depend dep
1031 depend dep: 1031 depend dep:
1032 @echo '*** Warning: make $@ is unnecessary now.' 1032 @echo '*** Warning: make $@ is unnecessary now.'
1033 1033
1034 # --------------------------------------------------------------------------- 1034 # ---------------------------------------------------------------------------
1035 # Firmware install 1035 # Firmware install
1036 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1036 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1037 export INSTALL_FW_PATH 1037 export INSTALL_FW_PATH
1038 1038
1039 PHONY += firmware_install 1039 PHONY += firmware_install
1040 firmware_install: FORCE 1040 firmware_install: FORCE
1041 @mkdir -p $(objtree)/firmware 1041 @mkdir -p $(objtree)/firmware
1042 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1042 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1043 1043
1044 # --------------------------------------------------------------------------- 1044 # ---------------------------------------------------------------------------
1045 # Kernel headers 1045 # Kernel headers
1046 1046
1047 #Default location for installed headers 1047 #Default location for installed headers
1048 export INSTALL_HDR_PATH = $(objtree)/usr 1048 export INSTALL_HDR_PATH = $(objtree)/usr
1049 1049
1050 # If we do an all arch process set dst to asm-$(hdr-arch) 1050 # If we do an all arch process set dst to asm-$(hdr-arch)
1051 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1051 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1052 1052
1053 PHONY += archheaders 1053 PHONY += archheaders
1054 archheaders: 1054 archheaders:
1055 1055
1056 PHONY += archscripts 1056 PHONY += archscripts
1057 archscripts: 1057 archscripts:
1058 1058
1059 PHONY += __headers 1059 PHONY += __headers
1060 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE 1060 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
1061 $(Q)$(MAKE) $(build)=scripts build_unifdef 1061 $(Q)$(MAKE) $(build)=scripts build_unifdef
1062 1062
1063 PHONY += headers_install_all 1063 PHONY += headers_install_all
1064 headers_install_all: 1064 headers_install_all:
1065 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1065 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1066 1066
1067 PHONY += headers_install 1067 PHONY += headers_install
1068 headers_install: __headers 1068 headers_install: __headers
1069 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ 1069 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
1070 $(error Headers not exportable for the $(SRCARCH) architecture)) 1070 $(error Headers not exportable for the $(SRCARCH) architecture))
1071 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1071 $(Q)$(MAKE) $(hdr-inst)=include/uapi
1072 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) 1072 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
1073 1073
1074 PHONY += headers_check_all 1074 PHONY += headers_check_all
1075 headers_check_all: headers_install_all 1075 headers_check_all: headers_install_all
1076 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1076 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1077 1077
1078 PHONY += headers_check 1078 PHONY += headers_check
1079 headers_check: headers_install 1079 headers_check: headers_install
1080 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 1080 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1081 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 1081 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
1082 1082
1083 # --------------------------------------------------------------------------- 1083 # ---------------------------------------------------------------------------
1084 # Kernel selftest 1084 # Kernel selftest
1085 1085
1086 PHONY += kselftest 1086 PHONY += kselftest
1087 kselftest: 1087 kselftest:
1088 $(Q)$(MAKE) -C tools/testing/selftests run_tests 1088 $(Q)$(MAKE) -C tools/testing/selftests run_tests
1089 1089
1090 # --------------------------------------------------------------------------- 1090 # ---------------------------------------------------------------------------
1091 # Modules 1091 # Modules
1092 1092
1093 ifdef CONFIG_MODULES 1093 ifdef CONFIG_MODULES
1094 1094
1095 # By default, build modules as well 1095 # By default, build modules as well
1096 1096
1097 all: modules 1097 all: modules
1098 1098
1099 # Build modules 1099 # Build modules
1100 # 1100 #
1101 # A module can be listed more than once in obj-m resulting in 1101 # A module can be listed more than once in obj-m resulting in
1102 # duplicate lines in modules.order files. Those are removed 1102 # duplicate lines in modules.order files. Those are removed
1103 # using awk while concatenating to the final file. 1103 # using awk while concatenating to the final file.
1104 1104
1105 PHONY += modules 1105 PHONY += modules
1106 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1106 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
1107 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1107 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1108 @$(kecho) ' Building modules, stage 2.'; 1108 @$(kecho) ' Building modules, stage 2.';
1109 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1109 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1110 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1110 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1111 1111
1112 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1112 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1113 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1113 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1114 1114
1115 %/modules.builtin: include/config/auto.conf 1115 %/modules.builtin: include/config/auto.conf
1116 $(Q)$(MAKE) $(modbuiltin)=$* 1116 $(Q)$(MAKE) $(modbuiltin)=$*
1117 1117
1118 1118
1119 # Target to prepare building external modules 1119 # Target to prepare building external modules
1120 PHONY += modules_prepare 1120 PHONY += modules_prepare
1121 modules_prepare: prepare scripts 1121 modules_prepare: prepare scripts
1122 1122
1123 # Target to install modules 1123 # Target to install modules
1124 PHONY += modules_install 1124 PHONY += modules_install
1125 modules_install: _modinst_ _modinst_post 1125 modules_install: _modinst_ _modinst_post
1126 1126
1127 PHONY += _modinst_ 1127 PHONY += _modinst_
1128 _modinst_: 1128 _modinst_:
1129 @rm -rf $(MODLIB)/kernel 1129 @rm -rf $(MODLIB)/kernel
1130 @rm -f $(MODLIB)/source 1130 @rm -f $(MODLIB)/source
1131 @mkdir -p $(MODLIB)/kernel 1131 @mkdir -p $(MODLIB)/kernel
1132 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source 1132 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
1133 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1133 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1134 rm -f $(MODLIB)/build ; \ 1134 rm -f $(MODLIB)/build ; \
1135 ln -s $(CURDIR) $(MODLIB)/build ; \ 1135 ln -s $(CURDIR) $(MODLIB)/build ; \
1136 fi 1136 fi
1137 @cp -f $(objtree)/modules.order $(MODLIB)/ 1137 @cp -f $(objtree)/modules.order $(MODLIB)/
1138 @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1138 @cp -f $(objtree)/modules.builtin $(MODLIB)/
1139 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1139 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1140 1140
1141 # This depmod is only for convenience to give the initial 1141 # This depmod is only for convenience to give the initial
1142 # boot a modules.dep even before / is mounted read-write. However the 1142 # boot a modules.dep even before / is mounted read-write. However the
1143 # boot script depmod is the master version. 1143 # boot script depmod is the master version.
1144 PHONY += _modinst_post 1144 PHONY += _modinst_post
1145 _modinst_post: _modinst_ 1145 _modinst_post: _modinst_
1146 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1146 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1147 $(call cmd,depmod) 1147 $(call cmd,depmod)
1148 1148
1149 ifeq ($(CONFIG_MODULE_SIG), y) 1149 ifeq ($(CONFIG_MODULE_SIG), y)
1150 PHONY += modules_sign 1150 PHONY += modules_sign
1151 modules_sign: 1151 modules_sign:
1152 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1152 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1153 endif 1153 endif
1154 1154
1155 else # CONFIG_MODULES 1155 else # CONFIG_MODULES
1156 1156
1157 # Modules not configured 1157 # Modules not configured
1158 # --------------------------------------------------------------------------- 1158 # ---------------------------------------------------------------------------
1159 1159
1160 modules modules_install: FORCE 1160 modules modules_install: FORCE
1161 @echo >&2 1161 @echo >&2
1162 @echo >&2 "The present kernel configuration has modules disabled." 1162 @echo >&2 "The present kernel configuration has modules disabled."
1163 @echo >&2 "Type 'make config' and enable loadable module support." 1163 @echo >&2 "Type 'make config' and enable loadable module support."
1164 @echo >&2 "Then build a kernel with module support enabled." 1164 @echo >&2 "Then build a kernel with module support enabled."
1165 @echo >&2 1165 @echo >&2
1166 @exit 1 1166 @exit 1
1167 1167
1168 endif # CONFIG_MODULES 1168 endif # CONFIG_MODULES
1169 1169
1170 ### 1170 ###
1171 # Cleaning is done on three levels. 1171 # Cleaning is done on three levels.
1172 # make clean Delete most generated files 1172 # make clean Delete most generated files
1173 # Leave enough to build external modules 1173 # Leave enough to build external modules
1174 # make mrproper Delete the current configuration, and all generated files 1174 # make mrproper Delete the current configuration, and all generated files
1175 # make distclean Remove editor backup files, patch leftover files and the like 1175 # make distclean Remove editor backup files, patch leftover files and the like
1176 1176
1177 # Directories & files removed with 'make clean' 1177 # Directories & files removed with 'make clean'
1178 CLEAN_DIRS += $(MODVERDIR) 1178 CLEAN_DIRS += $(MODVERDIR)
1179 1179
1180 # Directories & files removed with 'make mrproper' 1180 # Directories & files removed with 'make mrproper'
1181 MRPROPER_DIRS += include/config usr/include include/generated \ 1181 MRPROPER_DIRS += include/config usr/include include/generated \
1182 arch/*/include/generated .tmp_objdiff 1182 arch/*/include/generated .tmp_objdiff
1183 MRPROPER_FILES += .config .config.old .version .old_version \ 1183 MRPROPER_FILES += .config .config.old .version .old_version \
1184 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1184 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1185 signing_key.priv signing_key.x509 x509.genkey \ 1185 signing_key.priv signing_key.x509 x509.genkey \
1186 extra_certificates signing_key.x509.keyid \ 1186 extra_certificates signing_key.x509.keyid \
1187 signing_key.x509.signer vmlinux-gdb.py 1187 signing_key.x509.signer vmlinux-gdb.py
1188 1188
1189 # clean - Delete most, but leave enough to build external modules 1189 # clean - Delete most, but leave enough to build external modules
1190 # 1190 #
1191 clean: rm-dirs := $(CLEAN_DIRS) 1191 clean: rm-dirs := $(CLEAN_DIRS)
1192 clean: rm-files := $(CLEAN_FILES) 1192 clean: rm-files := $(CLEAN_FILES)
1193 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1193 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1194 1194
1195 PHONY += $(clean-dirs) clean archclean vmlinuxclean 1195 PHONY += $(clean-dirs) clean archclean vmlinuxclean
1196 $(clean-dirs): 1196 $(clean-dirs):
1197 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1197 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1198 1198
1199 vmlinuxclean: 1199 vmlinuxclean:
1200 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1200 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1201 1201
1202 clean: archclean vmlinuxclean 1202 clean: archclean vmlinuxclean
1203 1203
1204 # mrproper - Delete all generated files, including .config 1204 # mrproper - Delete all generated files, including .config
1205 # 1205 #
1206 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1206 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1207 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1207 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1208 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1208 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1209 1209
1210 PHONY += $(mrproper-dirs) mrproper archmrproper 1210 PHONY += $(mrproper-dirs) mrproper archmrproper
1211 $(mrproper-dirs): 1211 $(mrproper-dirs):
1212 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1212 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1213 1213
1214 mrproper: clean archmrproper $(mrproper-dirs) 1214 mrproper: clean archmrproper $(mrproper-dirs)
1215 $(call cmd,rmdirs) 1215 $(call cmd,rmdirs)
1216 $(call cmd,rmfiles) 1216 $(call cmd,rmfiles)
1217 1217
1218 # distclean 1218 # distclean
1219 # 1219 #
1220 PHONY += distclean 1220 PHONY += distclean
1221 1221
1222 distclean: mrproper 1222 distclean: mrproper
1223 @find $(srctree) $(RCS_FIND_IGNORE) \ 1223 @find $(srctree) $(RCS_FIND_IGNORE) \
1224 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1224 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1225 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1225 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1226 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ 1226 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
1227 -type f -print | xargs rm -f 1227 -type f -print | xargs rm -f
1228 1228
1229 1229
1230 # Packaging of the kernel to various formats 1230 # Packaging of the kernel to various formats
1231 # --------------------------------------------------------------------------- 1231 # ---------------------------------------------------------------------------
1232 # rpm target kept for backward compatibility 1232 # rpm target kept for backward compatibility
1233 package-dir := scripts/package 1233 package-dir := scripts/package
1234 1234
1235 %src-pkg: FORCE 1235 %src-pkg: FORCE
1236 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1236 $(Q)$(MAKE) $(build)=$(package-dir) $@
1237 %pkg: include/config/kernel.release FORCE 1237 %pkg: include/config/kernel.release FORCE
1238 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1238 $(Q)$(MAKE) $(build)=$(package-dir) $@
1239 rpm: include/config/kernel.release FORCE 1239 rpm: include/config/kernel.release FORCE
1240 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1240 $(Q)$(MAKE) $(build)=$(package-dir) $@
1241 1241
1242 1242
1243 # Brief documentation of the typical targets used 1243 # Brief documentation of the typical targets used
1244 # --------------------------------------------------------------------------- 1244 # ---------------------------------------------------------------------------
1245 1245
1246 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1246 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1247 boards := $(sort $(notdir $(boards))) 1247 boards := $(sort $(notdir $(boards)))
1248 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1248 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1249 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1249 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1250 1250
1251 help: 1251 help:
1252 @echo 'Cleaning targets:' 1252 @echo 'Cleaning targets:'
1253 @echo ' clean - Remove most generated files but keep the config and' 1253 @echo ' clean - Remove most generated files but keep the config and'
1254 @echo ' enough build support to build external modules' 1254 @echo ' enough build support to build external modules'
1255 @echo ' mrproper - Remove all generated files + config + various backup files' 1255 @echo ' mrproper - Remove all generated files + config + various backup files'
1256 @echo ' distclean - mrproper + remove editor backup and patch files' 1256 @echo ' distclean - mrproper + remove editor backup and patch files'
1257 @echo '' 1257 @echo ''
1258 @echo 'Configuration targets:' 1258 @echo 'Configuration targets:'
1259 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1259 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1260 @echo '' 1260 @echo ''
1261 @echo 'Other generic targets:' 1261 @echo 'Other generic targets:'
1262 @echo ' all - Build all targets marked with [*]' 1262 @echo ' all - Build all targets marked with [*]'
1263 @echo '* vmlinux - Build the bare kernel' 1263 @echo '* vmlinux - Build the bare kernel'
1264 @echo '* modules - Build all modules' 1264 @echo '* modules - Build all modules'
1265 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1265 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1266 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1266 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1267 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1267 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1268 @echo ' dir/ - Build all files in dir and below' 1268 @echo ' dir/ - Build all files in dir and below'
1269 @echo ' dir/file.[oisS] - Build specified target only' 1269 @echo ' dir/file.[oisS] - Build specified target only'
1270 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1270 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1271 @echo ' (requires a recent binutils and recent build (System.map))' 1271 @echo ' (requires a recent binutils and recent build (System.map))'
1272 @echo ' dir/file.ko - Build module including final link' 1272 @echo ' dir/file.ko - Build module including final link'
1273 @echo ' modules_prepare - Set up for building external modules' 1273 @echo ' modules_prepare - Set up for building external modules'
1274 @echo ' tags/TAGS - Generate tags file for editors' 1274 @echo ' tags/TAGS - Generate tags file for editors'
1275 @echo ' cscope - Generate cscope index' 1275 @echo ' cscope - Generate cscope index'
1276 @echo ' gtags - Generate GNU GLOBAL index' 1276 @echo ' gtags - Generate GNU GLOBAL index'
1277 @echo ' kernelrelease - Output the release version string (use with make -s)' 1277 @echo ' kernelrelease - Output the release version string (use with make -s)'
1278 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1278 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)'
1279 @echo ' image_name - Output the image name (use with make -s)' 1279 @echo ' image_name - Output the image name (use with make -s)'
1280 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1280 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1281 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1281 echo ' (default: $(INSTALL_HDR_PATH))'; \
1282 echo '' 1282 echo ''
1283 @echo 'Static analysers' 1283 @echo 'Static analysers'
1284 @echo ' checkstack - Generate a list of stack hogs' 1284 @echo ' checkstack - Generate a list of stack hogs'
1285 @echo ' namespacecheck - Name space analysis on compiled kernel' 1285 @echo ' namespacecheck - Name space analysis on compiled kernel'
1286 @echo ' versioncheck - Sanity check on version.h usage' 1286 @echo ' versioncheck - Sanity check on version.h usage'
1287 @echo ' includecheck - Check for duplicate included header files' 1287 @echo ' includecheck - Check for duplicate included header files'
1288 @echo ' export_report - List the usages of all exported symbols' 1288 @echo ' export_report - List the usages of all exported symbols'
1289 @echo ' headers_check - Sanity check on exported headers' 1289 @echo ' headers_check - Sanity check on exported headers'
1290 @echo ' headerdep - Detect inclusion cycles in headers' 1290 @echo ' headerdep - Detect inclusion cycles in headers'
1291 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1291 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1292 @echo '' 1292 @echo ''
1293 @echo 'Kernel selftest' 1293 @echo 'Kernel selftest'
1294 @echo ' kselftest - Build and run kernel selftest (run as root)' 1294 @echo ' kselftest - Build and run kernel selftest (run as root)'
1295 @echo ' Build, install, and boot kernel before' 1295 @echo ' Build, install, and boot kernel before'
1296 @echo ' running kselftest on it' 1296 @echo ' running kselftest on it'
1297 @echo '' 1297 @echo ''
1298 @echo 'Kernel packaging:' 1298 @echo 'Kernel packaging:'
1299 @$(MAKE) $(build)=$(package-dir) help 1299 @$(MAKE) $(build)=$(package-dir) help
1300 @echo '' 1300 @echo ''
1301 @echo 'Documentation targets:' 1301 @echo 'Documentation targets:'
1302 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1302 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1303 @echo '' 1303 @echo ''
1304 @echo 'Architecture specific targets ($(SRCARCH)):' 1304 @echo 'Architecture specific targets ($(SRCARCH)):'
1305 @$(if $(archhelp),$(archhelp),\ 1305 @$(if $(archhelp),$(archhelp),\
1306 echo ' No architecture specific help defined for $(SRCARCH)') 1306 echo ' No architecture specific help defined for $(SRCARCH)')
1307 @echo '' 1307 @echo ''
1308 @$(if $(boards), \ 1308 @$(if $(boards), \
1309 $(foreach b, $(boards), \ 1309 $(foreach b, $(boards), \
1310 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1310 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1311 echo '') 1311 echo '')
1312 @$(if $(board-dirs), \ 1312 @$(if $(board-dirs), \
1313 $(foreach b, $(board-dirs), \ 1313 $(foreach b, $(board-dirs), \
1314 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1314 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1315 printf " %-16s - Show all of the above\\n" help-boards; \ 1315 printf " %-16s - Show all of the above\\n" help-boards; \
1316 echo '') 1316 echo '')
1317 1317
1318 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1318 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1319 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1319 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1320 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1320 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1321 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1321 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1322 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1322 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1323 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1323 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1324 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1324 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1325 @echo ' 1: warnings which may be relevant and do not occur too often' 1325 @echo ' 1: warnings which may be relevant and do not occur too often'
1326 @echo ' 2: warnings which occur quite often but may still be relevant' 1326 @echo ' 2: warnings which occur quite often but may still be relevant'
1327 @echo ' 3: more obscure warnings, can most likely be ignored' 1327 @echo ' 3: more obscure warnings, can most likely be ignored'
1328 @echo ' Multiple levels can be combined with W=12 or W=123' 1328 @echo ' Multiple levels can be combined with W=12 or W=123'
1329 @echo '' 1329 @echo ''
1330 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1330 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1331 @echo 'For further info see the ./README file' 1331 @echo 'For further info see the ./README file'
1332 1332
1333 1333
1334 help-board-dirs := $(addprefix help-,$(board-dirs)) 1334 help-board-dirs := $(addprefix help-,$(board-dirs))
1335 1335
1336 help-boards: $(help-board-dirs) 1336 help-boards: $(help-board-dirs)
1337 1337
1338 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1338 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)))
1339 1339
1340 $(help-board-dirs): help-%: 1340 $(help-board-dirs): help-%:
1341 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1341 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1342 @$(if $(boards-per-dir), \ 1342 @$(if $(boards-per-dir), \
1343 $(foreach b, $(boards-per-dir), \ 1343 $(foreach b, $(boards-per-dir), \
1344 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1344 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1345 echo '') 1345 echo '')
1346 1346
1347 1347
1348 # Documentation targets 1348 # Documentation targets
1349 # --------------------------------------------------------------------------- 1349 # ---------------------------------------------------------------------------
1350 %docs: scripts_basic FORCE 1350 %docs: scripts_basic FORCE
1351 $(Q)$(MAKE) $(build)=scripts build_docproc 1351 $(Q)$(MAKE) $(build)=scripts build_docproc
1352 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1352 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1353 1353
1354 else # KBUILD_EXTMOD 1354 else # KBUILD_EXTMOD
1355 1355
1356 ### 1356 ###
1357 # External module support. 1357 # External module support.
1358 # When building external modules the kernel used as basis is considered 1358 # When building external modules the kernel used as basis is considered
1359 # read-only, and no consistency checks are made and the make 1359 # read-only, and no consistency checks are made and the make
1360 # system is not used on the basis kernel. If updates are required 1360 # system is not used on the basis kernel. If updates are required
1361 # in the basis kernel ordinary make commands (without M=...) must 1361 # in the basis kernel ordinary make commands (without M=...) must
1362 # be used. 1362 # be used.
1363 # 1363 #
1364 # The following are the only valid targets when building external 1364 # The following are the only valid targets when building external
1365 # modules. 1365 # modules.
1366 # make M=dir clean Delete all automatically generated files 1366 # make M=dir clean Delete all automatically generated files
1367 # make M=dir modules Make all modules in specified dir 1367 # make M=dir modules Make all modules in specified dir
1368 # make M=dir Same as 'make M=dir modules' 1368 # make M=dir Same as 'make M=dir modules'
1369 # make M=dir modules_install 1369 # make M=dir modules_install
1370 # Install the modules built in the module directory 1370 # Install the modules built in the module directory
1371 # Assumes install directory is already created 1371 # Assumes install directory is already created
1372 1372
1373 # We are always building modules 1373 # We are always building modules
1374 KBUILD_MODULES := 1 1374 KBUILD_MODULES := 1
1375 PHONY += crmodverdir 1375 PHONY += crmodverdir
1376 crmodverdir: 1376 crmodverdir:
1377 $(cmd_crmodverdir) 1377 $(cmd_crmodverdir)
1378 1378
1379 PHONY += $(objtree)/Module.symvers 1379 PHONY += $(objtree)/Module.symvers
1380 $(objtree)/Module.symvers: 1380 $(objtree)/Module.symvers:
1381 @test -e $(objtree)/Module.symvers || ( \ 1381 @test -e $(objtree)/Module.symvers || ( \
1382 echo; \ 1382 echo; \
1383 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1383 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1384 echo " is missing; modules will have no dependencies and modversions."; \ 1384 echo " is missing; modules will have no dependencies and modversions."; \
1385 echo ) 1385 echo )
1386 1386
1387 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1387 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1388 PHONY += $(module-dirs) modules 1388 PHONY += $(module-dirs) modules
1389 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1389 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1390 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1390 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1391 1391
1392 modules: $(module-dirs) 1392 modules: $(module-dirs)
1393 @$(kecho) ' Building modules, stage 2.'; 1393 @$(kecho) ' Building modules, stage 2.';
1394 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1394 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1395 1395
1396 PHONY += modules_install 1396 PHONY += modules_install
1397 modules_install: _emodinst_ _emodinst_post 1397 modules_install: _emodinst_ _emodinst_post
1398 1398
1399 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1399 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1400 PHONY += _emodinst_ 1400 PHONY += _emodinst_
1401 _emodinst_: 1401 _emodinst_:
1402 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1402 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1403 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1403 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1404 1404
1405 PHONY += _emodinst_post 1405 PHONY += _emodinst_post
1406 _emodinst_post: _emodinst_ 1406 _emodinst_post: _emodinst_
1407 $(call cmd,depmod) 1407 $(call cmd,depmod)
1408 1408
1409 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1409 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1410 1410
1411 PHONY += $(clean-dirs) clean 1411 PHONY += $(clean-dirs) clean
1412 $(clean-dirs): 1412 $(clean-dirs):
1413 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1413 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1414 1414
1415 clean: rm-dirs := $(MODVERDIR) 1415 clean: rm-dirs := $(MODVERDIR)
1416 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1416 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1417 1417
1418 help: 1418 help:
1419 @echo ' Building external modules.' 1419 @echo ' Building external modules.'
1420 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1420 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1421 @echo '' 1421 @echo ''
1422 @echo ' modules - default target, build the module(s)' 1422 @echo ' modules - default target, build the module(s)'
1423 @echo ' modules_install - install the module' 1423 @echo ' modules_install - install the module'
1424 @echo ' clean - remove generated files in module directory only' 1424 @echo ' clean - remove generated files in module directory only'
1425 @echo '' 1425 @echo ''
1426 1426
1427 # Dummies... 1427 # Dummies...
1428 PHONY += prepare scripts 1428 PHONY += prepare scripts
1429 prepare: ; 1429 prepare: ;
1430 scripts: ; 1430 scripts: ;
1431 endif # KBUILD_EXTMOD 1431 endif # KBUILD_EXTMOD
1432 1432
1433 clean: $(clean-dirs) 1433 clean: $(clean-dirs)
1434 $(call cmd,rmdirs) 1434 $(call cmd,rmdirs)
1435 $(call cmd,rmfiles) 1435 $(call cmd,rmfiles)
1436 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1436 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1437 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1437 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1438 -o -name '*.ko.*' \ 1438 -o -name '*.ko.*' \
1439 -o -name '*.dwo' \ 1439 -o -name '*.dwo' \
1440 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1440 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1441 -o -name '*.symtypes' -o -name 'modules.order' \ 1441 -o -name '*.symtypes' -o -name 'modules.order' \
1442 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1442 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1443 -o -name '*.gcno' \) -type f -print | xargs rm -f 1443 -o -name '*.gcno' \) -type f -print | xargs rm -f
1444 1444
1445 # Generate tags for editors 1445 # Generate tags for editors
1446 # --------------------------------------------------------------------------- 1446 # ---------------------------------------------------------------------------
1447 quiet_cmd_tags = GEN $@ 1447 quiet_cmd_tags = GEN $@
1448 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1448 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1449 1449
1450 tags TAGS cscope gtags: FORCE 1450 tags TAGS cscope gtags: FORCE
1451 $(call cmd,tags) 1451 $(call cmd,tags)
1452 1452
1453 # Scripts to check various things for consistency 1453 # Scripts to check various things for consistency
1454 # --------------------------------------------------------------------------- 1454 # ---------------------------------------------------------------------------
1455 1455
1456 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 1456 PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1457 1457
1458 includecheck: 1458 includecheck:
1459 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1459 find $(srctree)/* $(RCS_FIND_IGNORE) \
1460 -name '*.[hcS]' -type f -print | sort \ 1460 -name '*.[hcS]' -type f -print | sort \
1461 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1461 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1462 1462
1463 versioncheck: 1463 versioncheck:
1464 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1464 find $(srctree)/* $(RCS_FIND_IGNORE) \
1465 -name '*.[hcS]' -type f -print | sort \ 1465 -name '*.[hcS]' -type f -print | sort \
1466 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1466 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1467 1467
1468 coccicheck: 1468 coccicheck:
1469 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1469 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1470 1470
1471 namespacecheck: 1471 namespacecheck:
1472 $(PERL) $(srctree)/scripts/namespace.pl 1472 $(PERL) $(srctree)/scripts/namespace.pl
1473 1473
1474 export_report: 1474 export_report:
1475 $(PERL) $(srctree)/scripts/export_report.pl 1475 $(PERL) $(srctree)/scripts/export_report.pl
1476 1476
1477 endif #ifeq ($(config-targets),1) 1477 endif #ifeq ($(config-targets),1)
1478 endif #ifeq ($(mixed-targets),1) 1478 endif #ifeq ($(mixed-targets),1)
1479 1479
1480 PHONY += checkstack kernelrelease kernelversion image_name 1480 PHONY += checkstack kernelrelease kernelversion image_name
1481 1481
1482 # UML needs a little special treatment here. It wants to use the host 1482 # UML needs a little special treatment here. It wants to use the host
1483 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1483 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1484 # else wants $(ARCH), including people doing cross-builds, which means 1484 # else wants $(ARCH), including people doing cross-builds, which means
1485 # that $(SUBARCH) doesn't work here. 1485 # that $(SUBARCH) doesn't work here.
1486 ifeq ($(ARCH), um) 1486 ifeq ($(ARCH), um)
1487 CHECKSTACK_ARCH := $(SUBARCH) 1487 CHECKSTACK_ARCH := $(SUBARCH)
1488 else 1488 else
1489 CHECKSTACK_ARCH := $(ARCH) 1489 CHECKSTACK_ARCH := $(ARCH)
1490 endif 1490 endif
1491 checkstack: 1491 checkstack:
1492 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1492 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1493 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1493 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1494 1494
1495 kernelrelease: 1495 kernelrelease:
1496 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1496 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1497 1497
1498 kernelversion: 1498 kernelversion:
1499 @echo $(KERNELVERSION) 1499 @echo $(KERNELVERSION)
1500 1500
1501 image_name: 1501 image_name:
1502 @echo $(KBUILD_IMAGE) 1502 @echo $(KBUILD_IMAGE)
1503 1503
1504 # Clear a bunch of variables before executing the submake 1504 # Clear a bunch of variables before executing the submake
1505 tools/: FORCE 1505 tools/: FORCE
1506 $(Q)mkdir -p $(objtree)/tools 1506 $(Q)mkdir -p $(objtree)/tools
1507 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ 1507 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/
1508 1508
1509 tools/%: FORCE 1509 tools/%: FORCE
1510 $(Q)mkdir -p $(objtree)/tools 1510 $(Q)mkdir -p $(objtree)/tools
1511 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* 1511 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*
1512 1512
1513 # Single targets 1513 # Single targets
1514 # --------------------------------------------------------------------------- 1514 # ---------------------------------------------------------------------------
1515 # Single targets are compatible with: 1515 # Single targets are compatible with:
1516 # - build with mixed source and output 1516 # - build with mixed source and output
1517 # - build with separate output dir 'make O=...' 1517 # - build with separate output dir 'make O=...'
1518 # - external modules 1518 # - external modules
1519 # 1519 #
1520 # target-dir => where to store outputfile 1520 # target-dir => where to store outputfile
1521 # build-dir => directory in kernel source tree to use 1521 # build-dir => directory in kernel source tree to use
1522 1522
1523 ifeq ($(KBUILD_EXTMOD),) 1523 ifeq ($(KBUILD_EXTMOD),)
1524 build-dir = $(patsubst %/,%,$(dir $@)) 1524 build-dir = $(patsubst %/,%,$(dir $@))
1525 target-dir = $(dir $@) 1525 target-dir = $(dir $@)
1526 else 1526 else
1527 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1527 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1528 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1528 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1529 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1529 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1530 endif 1530 endif
1531 1531
1532 %.s: %.c prepare scripts FORCE 1532 %.s: %.c prepare scripts FORCE
1533 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1533 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1534 %.i: %.c prepare scripts FORCE 1534 %.i: %.c prepare scripts FORCE
1535 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1535 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1536 %.o: %.c prepare scripts FORCE 1536 %.o: %.c prepare scripts FORCE
1537 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1537 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1538 %.lst: %.c prepare scripts FORCE 1538 %.lst: %.c prepare scripts FORCE
1539 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1539 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1540 %.s: %.S prepare scripts FORCE 1540 %.s: %.S prepare scripts FORCE
1541 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1541 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1542 %.o: %.S prepare scripts FORCE 1542 %.o: %.S prepare scripts FORCE
1543 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1543 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1544 %.symtypes: %.c prepare scripts FORCE 1544 %.symtypes: %.c prepare scripts FORCE
1545 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1545 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1546 1546
1547 # Modules 1547 # Modules
1548 /: prepare scripts FORCE 1548 /: prepare scripts FORCE
1549 $(cmd_crmodverdir) 1549 $(cmd_crmodverdir)
1550 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1550 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1551 $(build)=$(build-dir) 1551 $(build)=$(build-dir)
1552 # Make sure the latest headers are built for Documentation 1552 # Make sure the latest headers are built for Documentation
1553 Documentation/: headers_install 1553 Documentation/: headers_install
1554 %/: prepare scripts FORCE 1554 %/: prepare scripts FORCE
1555 $(cmd_crmodverdir) 1555 $(cmd_crmodverdir)
1556 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1556 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1557 $(build)=$(build-dir) 1557 $(build)=$(build-dir)
1558 %.ko: prepare scripts FORCE 1558 %.ko: prepare scripts FORCE
1559 $(cmd_crmodverdir) 1559 $(cmd_crmodverdir)
1560 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1560 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1561 $(build)=$(build-dir) $(@:.ko=.o) 1561 $(build)=$(build-dir) $(@:.ko=.o)
1562 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1562 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1563 1563
1564 # FIXME Should go into a make.lib or something 1564 # FIXME Should go into a make.lib or something
1565 # =========================================================================== 1565 # ===========================================================================
1566 1566
1567 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1567 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1568 cmd_rmdirs = rm -rf $(rm-dirs) 1568 cmd_rmdirs = rm -rf $(rm-dirs)
1569 1569
1570 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1570 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1571 cmd_rmfiles = rm -f $(rm-files) 1571 cmd_rmfiles = rm -f $(rm-files)
1572 1572
1573 # Run depmod only if we have System.map and depmod is executable 1573 # Run depmod only if we have System.map and depmod is executable
1574 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1574 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1575 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1575 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
1576 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 1576 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
1577 1577
1578 # Create temporary dir for module support files 1578 # Create temporary dir for module support files
1579 # clean it up only when building all modules 1579 # clean it up only when building all modules
1580 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1580 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1581 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1581 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1582 1582
1583 # read all saved command lines 1583 # read all saved command lines
1584 1584
1585 targets := $(wildcard $(sort $(targets))) 1585 targets := $(wildcard $(sort $(targets)))
1586 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1586 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1587 1587
1588 ifneq ($(cmd_files),) 1588 ifneq ($(cmd_files),)
1589 $(cmd_files): ; # Do not try to update included dependency files 1589 $(cmd_files): ; # Do not try to update included dependency files
1590 include $(cmd_files) 1590 include $(cmd_files)
1591 endif 1591 endif
1592 1592
1593 endif # skip-makefile 1593 endif # skip-makefile
1594 1594
1595 PHONY += FORCE 1595 PHONY += FORCE
1596 FORCE: 1596 FORCE:
1597 1597
1598 # Declare the contents of the .PHONY variable as phony. We keep that 1598 # Declare the contents of the .PHONY variable as phony. We keep that
1599 # information in a variable so we can use it in if_changed and friends. 1599 # information in a variable so we can use it in if_changed and friends.
1600 .PHONY: $(PHONY) 1600 .PHONY: $(PHONY)
1601 1601