Eric Lee / smarc-ti-linux-kernel

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Commit 206c5f60a3d902bc4b56dab2de3e88de5eb06108

Authored by Linus Torvalds
1 parent ee867cf97a
Exists in ti-lsk-linux-4.1.y and in 10 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-02.00.01, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04

Linux 3.18-rc4

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

1 VERSION = 3 1 VERSION = 3
2 PATCHLEVEL = 18 2 PATCHLEVEL = 18
3 SUBLEVEL = 0 3 SUBLEVEL = 0
4 EXTRAVERSION = -rc3 4 EXTRAVERSION = -rc4
5 NAME = Diseased Newt 5 NAME = Diseased Newt
6 6
7 # *DOCUMENTATION* 7 # *DOCUMENTATION*
8 # To see a list of typical targets execute "make help" 8 # To see a list of typical targets execute "make help"
9 # More info can be located in ./README 9 # More info can be located in ./README
10 # Comments in this file are targeted only to the developer, do not 10 # Comments in this file are targeted only to the developer, do not
11 # expect to learn how to build the kernel reading this file. 11 # expect to learn how to build the kernel reading this file.
12 12
13 # Do not use make's built-in rules and variables 13 # Do not use make's built-in rules and variables
14 # (this increases performance and avoids hard-to-debug behaviour); 14 # (this increases performance and avoids hard-to-debug behaviour);
15 MAKEFLAGS += -rR 15 MAKEFLAGS += -rR
16 16
17 # Avoid funny character set dependencies 17 # Avoid funny character set dependencies
18 unexport LC_ALL 18 unexport LC_ALL
19 LC_COLLATE=C 19 LC_COLLATE=C
20 LC_NUMERIC=C 20 LC_NUMERIC=C
21 export LC_COLLATE LC_NUMERIC 21 export LC_COLLATE LC_NUMERIC
22 22
23 # Avoid interference with shell env settings 23 # Avoid interference with shell env settings
24 unexport GREP_OPTIONS 24 unexport GREP_OPTIONS
25 25
26 # We are using a recursive build, so we need to do a little thinking 26 # We are using a recursive build, so we need to do a little thinking
27 # to get the ordering right. 27 # to get the ordering right.
28 # 28 #
29 # Most importantly: sub-Makefiles should only ever modify files in 29 # Most importantly: sub-Makefiles should only ever modify files in
30 # their own directory. If in some directory we have a dependency on 30 # their own directory. If in some directory we have a dependency on
31 # a file in another dir (which doesn't happen often, but it's often 31 # a file in another dir (which doesn't happen often, but it's often
32 # unavoidable when linking the built-in.o targets which finally 32 # unavoidable when linking the built-in.o targets which finally
33 # turn into vmlinux), we will call a sub make in that other dir, and 33 # turn into vmlinux), we will call a sub make in that other dir, and
34 # after that we are sure that everything which is in that other dir 34 # after that we are sure that everything which is in that other dir
35 # is now up to date. 35 # is now up to date.
36 # 36 #
37 # The only cases where we need to modify files which have global 37 # The only cases where we need to modify files which have global
38 # effects are thus separated out and done before the recursive 38 # effects are thus separated out and done before the recursive
39 # descending is started. They are now explicitly listed as the 39 # descending is started. They are now explicitly listed as the
40 # prepare rule. 40 # prepare rule.
41 41
42 # Beautify output 42 # Beautify output
43 # --------------------------------------------------------------------------- 43 # ---------------------------------------------------------------------------
44 # 44 #
45 # Normally, we echo the whole command before executing it. By making 45 # Normally, we echo the whole command before executing it. By making
46 # that echo $($(quiet)$(cmd)), we now have the possibility to set 46 # that echo $($(quiet)$(cmd)), we now have the possibility to set
47 # $(quiet) to choose other forms of output instead, e.g. 47 # $(quiet) to choose other forms of output instead, e.g.
48 # 48 #
49 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 49 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
50 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 50 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
51 # 51 #
52 # If $(quiet) is empty, the whole command will be printed. 52 # If $(quiet) is empty, the whole command will be printed.
53 # If it is set to "quiet_", only the short version will be printed. 53 # If it is set to "quiet_", only the short version will be printed.
54 # If it is set to "silent_", nothing will be printed at all, since 54 # If it is set to "silent_", nothing will be printed at all, since
55 # the variable $(silent_cmd_cc_o_c) doesn't exist. 55 # the variable $(silent_cmd_cc_o_c) doesn't exist.
56 # 56 #
57 # A simple variant is to prefix commands with $(Q) - that's useful 57 # A simple variant is to prefix commands with $(Q) - that's useful
58 # for commands that shall be hidden in non-verbose mode. 58 # for commands that shall be hidden in non-verbose mode.
59 # 59 #
60 # $(Q)ln $@ :< 60 # $(Q)ln $@ :<
61 # 61 #
62 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 62 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
63 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 63 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
64 # 64 #
65 # To put more focus on warnings, be less verbose as default 65 # To put more focus on warnings, be less verbose as default
66 # Use 'make V=1' to see the full commands 66 # Use 'make V=1' to see the full commands
67 67
68 ifeq ("$(origin V)", "command line") 68 ifeq ("$(origin V)", "command line")
69 KBUILD_VERBOSE = $(V) 69 KBUILD_VERBOSE = $(V)
70 endif 70 endif
71 ifndef KBUILD_VERBOSE 71 ifndef KBUILD_VERBOSE
72 KBUILD_VERBOSE = 0 72 KBUILD_VERBOSE = 0
73 endif 73 endif
74 74
75 ifeq ($(KBUILD_VERBOSE),1) 75 ifeq ($(KBUILD_VERBOSE),1)
76 quiet = 76 quiet =
77 Q = 77 Q =
78 else 78 else
79 quiet=quiet_ 79 quiet=quiet_
80 Q = @ 80 Q = @
81 endif 81 endif
82 82
83 # If the user is running make -s (silent mode), suppress echoing of 83 # If the user is running make -s (silent mode), suppress echoing of
84 # commands 84 # commands
85 85
86 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 86 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
87 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 87 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
88 quiet=silent_ 88 quiet=silent_
89 endif 89 endif
90 else # make-3.8x 90 else # make-3.8x
91 ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 91 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
92 quiet=silent_ 92 quiet=silent_
93 endif 93 endif
94 endif 94 endif
95 95
96 export quiet Q KBUILD_VERBOSE 96 export quiet Q KBUILD_VERBOSE
97 97
98 # kbuild supports saving output files in a separate directory. 98 # kbuild supports saving output files in a separate directory.
99 # To locate output files in a separate directory two syntaxes are supported. 99 # To locate output files in a separate directory two syntaxes are supported.
100 # In both cases the working directory must be the root of the kernel src. 100 # In both cases the working directory must be the root of the kernel src.
101 # 1) O= 101 # 1) O=
102 # Use "make O=dir/to/store/output/files/" 102 # Use "make O=dir/to/store/output/files/"
103 # 103 #
104 # 2) Set KBUILD_OUTPUT 104 # 2) Set KBUILD_OUTPUT
105 # Set the environment variable KBUILD_OUTPUT to point to the directory 105 # Set the environment variable KBUILD_OUTPUT to point to the directory
106 # where the output files shall be placed. 106 # where the output files shall be placed.
107 # export KBUILD_OUTPUT=dir/to/store/output/files/ 107 # export KBUILD_OUTPUT=dir/to/store/output/files/
108 # make 108 # make
109 # 109 #
110 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 110 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
111 # variable. 111 # variable.
112 112
113 # KBUILD_SRC is set on invocation of make in OBJ directory 113 # KBUILD_SRC is set on invocation of make in OBJ directory
114 # KBUILD_SRC is not intended to be used by the regular user (for now) 114 # KBUILD_SRC is not intended to be used by the regular user (for now)
115 ifeq ($(KBUILD_SRC),) 115 ifeq ($(KBUILD_SRC),)
116 116
117 # OK, Make called in directory where kernel src resides 117 # OK, Make called in directory where kernel src resides
118 # Do we want to locate output files in a separate directory? 118 # Do we want to locate output files in a separate directory?
119 ifeq ("$(origin O)", "command line") 119 ifeq ("$(origin O)", "command line")
120 KBUILD_OUTPUT := $(O) 120 KBUILD_OUTPUT := $(O)
121 endif 121 endif
122 122
123 # That's our default target when none is given on the command line 123 # That's our default target when none is given on the command line
124 PHONY := _all 124 PHONY := _all
125 _all: 125 _all:
126 126
127 # Cancel implicit rules on top Makefile 127 # Cancel implicit rules on top Makefile
128 $(CURDIR)/Makefile Makefile: ; 128 $(CURDIR)/Makefile Makefile: ;
129 129
130 ifneq ($(KBUILD_OUTPUT),) 130 ifneq ($(KBUILD_OUTPUT),)
131 # Invoke a second make in the output directory, passing relevant variables 131 # Invoke a second make in the output directory, passing relevant variables
132 # check that the output directory actually exists 132 # check that the output directory actually exists
133 saved-output := $(KBUILD_OUTPUT) 133 saved-output := $(KBUILD_OUTPUT)
134 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 134 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
135 && /bin/pwd) 135 && /bin/pwd)
136 $(if $(KBUILD_OUTPUT),, \ 136 $(if $(KBUILD_OUTPUT),, \
137 $(error failed to create output directory "$(saved-output)")) 137 $(error failed to create output directory "$(saved-output)"))
138 138
139 PHONY += $(MAKECMDGOALS) sub-make 139 PHONY += $(MAKECMDGOALS) sub-make
140 140
141 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 141 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
142 @: 142 @:
143 143
144 sub-make: FORCE 144 sub-make: FORCE
145 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 145 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
146 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 146 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
147 147
148 # Leave processing to above invocation of make 148 # Leave processing to above invocation of make
149 skip-makefile := 1 149 skip-makefile := 1
150 endif # ifneq ($(KBUILD_OUTPUT),) 150 endif # ifneq ($(KBUILD_OUTPUT),)
151 endif # ifeq ($(KBUILD_SRC),) 151 endif # ifeq ($(KBUILD_SRC),)
152 152
153 # We process the rest of the Makefile if this is the final invocation of make 153 # We process the rest of the Makefile if this is the final invocation of make
154 ifeq ($(skip-makefile),) 154 ifeq ($(skip-makefile),)
155 155
156 # Do not print "Entering directory ...", 156 # Do not print "Entering directory ...",
157 # but we want to display it when entering to the output directory 157 # but we want to display it when entering to the output directory
158 # so that IDEs/editors are able to understand relative filenames. 158 # so that IDEs/editors are able to understand relative filenames.
159 MAKEFLAGS += --no-print-directory 159 MAKEFLAGS += --no-print-directory
160 160
161 # Call a source code checker (by default, "sparse") as part of the 161 # Call a source code checker (by default, "sparse") as part of the
162 # C compilation. 162 # C compilation.
163 # 163 #
164 # Use 'make C=1' to enable checking of only re-compiled files. 164 # Use 'make C=1' to enable checking of only re-compiled files.
165 # Use 'make C=2' to enable checking of *all* source files, regardless 165 # Use 'make C=2' to enable checking of *all* source files, regardless
166 # of whether they are re-compiled or not. 166 # of whether they are re-compiled or not.
167 # 167 #
168 # See the file "Documentation/sparse.txt" for more details, including 168 # See the file "Documentation/sparse.txt" for more details, including
169 # where to get the "sparse" utility. 169 # where to get the "sparse" utility.
170 170
171 ifeq ("$(origin C)", "command line") 171 ifeq ("$(origin C)", "command line")
172 KBUILD_CHECKSRC = $(C) 172 KBUILD_CHECKSRC = $(C)
173 endif 173 endif
174 ifndef KBUILD_CHECKSRC 174 ifndef KBUILD_CHECKSRC
175 KBUILD_CHECKSRC = 0 175 KBUILD_CHECKSRC = 0
176 endif 176 endif
177 177
178 # Use make M=dir to specify directory of external module to build 178 # Use make M=dir to specify directory of external module to build
179 # Old syntax make ... SUBDIRS=$PWD is still supported 179 # Old syntax make ... SUBDIRS=$PWD is still supported
180 # Setting the environment variable KBUILD_EXTMOD take precedence 180 # Setting the environment variable KBUILD_EXTMOD take precedence
181 ifdef SUBDIRS 181 ifdef SUBDIRS
182 KBUILD_EXTMOD ?= $(SUBDIRS) 182 KBUILD_EXTMOD ?= $(SUBDIRS)
183 endif 183 endif
184 184
185 ifeq ("$(origin M)", "command line") 185 ifeq ("$(origin M)", "command line")
186 KBUILD_EXTMOD := $(M) 186 KBUILD_EXTMOD := $(M)
187 endif 187 endif
188 188
189 # If building an external module we do not care about the all: rule 189 # If building an external module we do not care about the all: rule
190 # but instead _all depend on modules 190 # but instead _all depend on modules
191 PHONY += all 191 PHONY += all
192 ifeq ($(KBUILD_EXTMOD),) 192 ifeq ($(KBUILD_EXTMOD),)
193 _all: all 193 _all: all
194 else 194 else
195 _all: modules 195 _all: modules
196 endif 196 endif
197 197
198 ifeq ($(KBUILD_SRC),) 198 ifeq ($(KBUILD_SRC),)
199 # building in the source tree 199 # building in the source tree
200 srctree := . 200 srctree := .
201 else 201 else
202 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 202 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
203 # building in a subdirectory of the source tree 203 # building in a subdirectory of the source tree
204 srctree := .. 204 srctree := ..
205 else 205 else
206 srctree := $(KBUILD_SRC) 206 srctree := $(KBUILD_SRC)
207 endif 207 endif
208 endif 208 endif
209 objtree := . 209 objtree := .
210 src := $(srctree) 210 src := $(srctree)
211 obj := $(objtree) 211 obj := $(objtree)
212 212
213 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 213 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
214 214
215 export srctree objtree VPATH 215 export srctree objtree VPATH
216 216
217 217
218 # SUBARCH tells the usermode build what the underlying arch is. That is set 218 # SUBARCH tells the usermode build what the underlying arch is. That is set
219 # first, and if a usermode build is happening, the "ARCH=um" on the command 219 # first, and if a usermode build is happening, the "ARCH=um" on the command
220 # line overrides the setting of ARCH below. If a native build is happening, 220 # line overrides the setting of ARCH below. If a native build is happening,
221 # then ARCH is assigned, getting whatever value it gets normally, and 221 # then ARCH is assigned, getting whatever value it gets normally, and
222 # SUBARCH is subsequently ignored. 222 # SUBARCH is subsequently ignored.
223 223
224 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 224 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
225 -e s/sun4u/sparc64/ \ 225 -e s/sun4u/sparc64/ \
226 -e s/arm.*/arm/ -e s/sa110/arm/ \ 226 -e s/arm.*/arm/ -e s/sa110/arm/ \
227 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 227 -e s/s390x/s390/ -e s/parisc64/parisc/ \
228 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 228 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
229 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) 229 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
230 230
231 # Cross compiling and selecting different set of gcc/bin-utils 231 # Cross compiling and selecting different set of gcc/bin-utils
232 # --------------------------------------------------------------------------- 232 # ---------------------------------------------------------------------------
233 # 233 #
234 # When performing cross compilation for other architectures ARCH shall be set 234 # When performing cross compilation for other architectures ARCH shall be set
235 # to the target architecture. (See arch/* for the possibilities). 235 # to the target architecture. (See arch/* for the possibilities).
236 # ARCH can be set during invocation of make: 236 # ARCH can be set during invocation of make:
237 # make ARCH=ia64 237 # make ARCH=ia64
238 # Another way is to have ARCH set in the environment. 238 # Another way is to have ARCH set in the environment.
239 # The default ARCH is the host where make is executed. 239 # The default ARCH is the host where make is executed.
240 240
241 # CROSS_COMPILE specify the prefix used for all executables used 241 # CROSS_COMPILE specify the prefix used for all executables used
242 # during compilation. Only gcc and related bin-utils executables 242 # during compilation. Only gcc and related bin-utils executables
243 # are prefixed with $(CROSS_COMPILE). 243 # are prefixed with $(CROSS_COMPILE).
244 # CROSS_COMPILE can be set on the command line 244 # CROSS_COMPILE can be set on the command line
245 # make CROSS_COMPILE=ia64-linux- 245 # make CROSS_COMPILE=ia64-linux-
246 # Alternatively CROSS_COMPILE can be set in the environment. 246 # Alternatively CROSS_COMPILE can be set in the environment.
247 # A third alternative is to store a setting in .config so that plain 247 # A third alternative is to store a setting in .config so that plain
248 # "make" in the configured kernel build directory always uses that. 248 # "make" in the configured kernel build directory always uses that.
249 # Default value for CROSS_COMPILE is not to prefix executables 249 # Default value for CROSS_COMPILE is not to prefix executables
250 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 250 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
251 ARCH ?= $(SUBARCH) 251 ARCH ?= $(SUBARCH)
252 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 252 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
253 253
254 # Architecture as present in compile.h 254 # Architecture as present in compile.h
255 UTS_MACHINE := $(ARCH) 255 UTS_MACHINE := $(ARCH)
256 SRCARCH := $(ARCH) 256 SRCARCH := $(ARCH)
257 257
258 # Additional ARCH settings for x86 258 # Additional ARCH settings for x86
259 ifeq ($(ARCH),i386) 259 ifeq ($(ARCH),i386)
260 SRCARCH := x86 260 SRCARCH := x86
261 endif 261 endif
262 ifeq ($(ARCH),x86_64) 262 ifeq ($(ARCH),x86_64)
263 SRCARCH := x86 263 SRCARCH := x86
264 endif 264 endif
265 265
266 # Additional ARCH settings for sparc 266 # Additional ARCH settings for sparc
267 ifeq ($(ARCH),sparc32) 267 ifeq ($(ARCH),sparc32)
268 SRCARCH := sparc 268 SRCARCH := sparc
269 endif 269 endif
270 ifeq ($(ARCH),sparc64) 270 ifeq ($(ARCH),sparc64)
271 SRCARCH := sparc 271 SRCARCH := sparc
272 endif 272 endif
273 273
274 # Additional ARCH settings for sh 274 # Additional ARCH settings for sh
275 ifeq ($(ARCH),sh64) 275 ifeq ($(ARCH),sh64)
276 SRCARCH := sh 276 SRCARCH := sh
277 endif 277 endif
278 278
279 # Additional ARCH settings for tile 279 # Additional ARCH settings for tile
280 ifeq ($(ARCH),tilepro) 280 ifeq ($(ARCH),tilepro)
281 SRCARCH := tile 281 SRCARCH := tile
282 endif 282 endif
283 ifeq ($(ARCH),tilegx) 283 ifeq ($(ARCH),tilegx)
284 SRCARCH := tile 284 SRCARCH := tile
285 endif 285 endif
286 286
287 # Where to locate arch specific headers 287 # Where to locate arch specific headers
288 hdr-arch := $(SRCARCH) 288 hdr-arch := $(SRCARCH)
289 289
290 KCONFIG_CONFIG ?= .config 290 KCONFIG_CONFIG ?= .config
291 export KCONFIG_CONFIG 291 export KCONFIG_CONFIG
292 292
293 # SHELL used by kbuild 293 # SHELL used by kbuild
294 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 294 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
295 else if [ -x /bin/bash ]; then echo /bin/bash; \ 295 else if [ -x /bin/bash ]; then echo /bin/bash; \
296 else echo sh; fi ; fi) 296 else echo sh; fi ; fi)
297 297
298 HOSTCC = gcc 298 HOSTCC = gcc
299 HOSTCXX = g++ 299 HOSTCXX = g++
300 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer 300 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
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 \ 394 -Iarch/$(hdr-arch)/include/generated \
395 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 395 $(if $(KBUILD_SRC), -I$(srctree)/include) \
396 -Iinclude \ 396 -Iinclude \
397 $(USERINCLUDE) 397 $(USERINCLUDE)
398 398
399 KBUILD_CPPFLAGS := -D__KERNEL__ 399 KBUILD_CPPFLAGS := -D__KERNEL__
400 400
401 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 401 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
402 -fno-strict-aliasing -fno-common \ 402 -fno-strict-aliasing -fno-common \
403 -Werror-implicit-function-declaration \ 403 -Werror-implicit-function-declaration \
404 -Wno-format-security 404 -Wno-format-security
405 405
406 KBUILD_AFLAGS_KERNEL := 406 KBUILD_AFLAGS_KERNEL :=
407 KBUILD_CFLAGS_KERNEL := 407 KBUILD_CFLAGS_KERNEL :=
408 KBUILD_AFLAGS := -D__ASSEMBLY__ 408 KBUILD_AFLAGS := -D__ASSEMBLY__
409 KBUILD_AFLAGS_MODULE := -DMODULE 409 KBUILD_AFLAGS_MODULE := -DMODULE
410 KBUILD_CFLAGS_MODULE := -DMODULE 410 KBUILD_CFLAGS_MODULE := -DMODULE
411 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 411 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
412 412
413 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 413 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
414 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 414 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
415 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 415 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
416 416
417 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 417 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
418 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 418 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
419 export CPP AR NM STRIP OBJCOPY OBJDUMP 419 export CPP AR NM STRIP OBJCOPY OBJDUMP
420 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE 420 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
421 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 421 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
422 422
423 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 423 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
424 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 424 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
425 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 425 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
426 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 426 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
427 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 427 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
428 export KBUILD_ARFLAGS 428 export KBUILD_ARFLAGS
429 429
430 # When compiling out-of-tree modules, put MODVERDIR in the module 430 # When compiling out-of-tree modules, put MODVERDIR in the module
431 # tree rather than in the kernel tree. The kernel tree might 431 # tree rather than in the kernel tree. The kernel tree might
432 # even be read-only. 432 # even be read-only.
433 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 433 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
434 434
435 # Files to ignore in find ... statements 435 # Files to ignore in find ... statements
436 436
437 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 437 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
438 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 438 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
439 -prune -o 439 -prune -o
440 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 440 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
441 --exclude CVS --exclude .pc --exclude .hg --exclude .git 441 --exclude CVS --exclude .pc --exclude .hg --exclude .git
442 442
443 # =========================================================================== 443 # ===========================================================================
444 # Rules shared between *config targets and build targets 444 # Rules shared between *config targets and build targets
445 445
446 # Basic helpers built in scripts/ 446 # Basic helpers built in scripts/
447 PHONY += scripts_basic 447 PHONY += scripts_basic
448 scripts_basic: 448 scripts_basic:
449 $(Q)$(MAKE) $(build)=scripts/basic 449 $(Q)$(MAKE) $(build)=scripts/basic
450 $(Q)rm -f .tmp_quiet_recordmcount 450 $(Q)rm -f .tmp_quiet_recordmcount
451 451
452 # To avoid any implicit rule to kick in, define an empty command. 452 # To avoid any implicit rule to kick in, define an empty command.
453 scripts/basic/%: scripts_basic ; 453 scripts/basic/%: scripts_basic ;
454 454
455 PHONY += outputmakefile 455 PHONY += outputmakefile
456 # outputmakefile generates a Makefile in the output directory, if using a 456 # outputmakefile generates a Makefile in the output directory, if using a
457 # separate output directory. This allows convenient use of make in the 457 # separate output directory. This allows convenient use of make in the
458 # output directory. 458 # output directory.
459 outputmakefile: 459 outputmakefile:
460 ifneq ($(KBUILD_SRC),) 460 ifneq ($(KBUILD_SRC),)
461 $(Q)ln -fsn $(srctree) source 461 $(Q)ln -fsn $(srctree) source
462 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 462 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
463 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 463 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
464 endif 464 endif
465 465
466 # Support for using generic headers in asm-generic 466 # Support for using generic headers in asm-generic
467 PHONY += asm-generic 467 PHONY += asm-generic
468 asm-generic: 468 asm-generic:
469 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 469 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
470 src=asm obj=arch/$(SRCARCH)/include/generated/asm 470 src=asm obj=arch/$(SRCARCH)/include/generated/asm
471 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 471 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
472 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm 472 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
473 473
474 # To make sure we do not include .config for any of the *config targets 474 # To make sure we do not include .config for any of the *config targets
475 # catch them early, and hand them over to scripts/kconfig/Makefile 475 # catch them early, and hand them over to scripts/kconfig/Makefile
476 # It is allowed to specify more targets when calling make, including 476 # It is allowed to specify more targets when calling make, including
477 # mixing *config targets and build targets. 477 # mixing *config targets and build targets.
478 # For example 'make oldconfig all'. 478 # For example 'make oldconfig all'.
479 # Detect when mixed targets is specified, and make a second invocation 479 # Detect when mixed targets is specified, and make a second invocation
480 # of make so .config is not included in this case either (for *config). 480 # of make so .config is not included in this case either (for *config).
481 481
482 version_h := include/generated/uapi/linux/version.h 482 version_h := include/generated/uapi/linux/version.h
483 483
484 no-dot-config-targets := clean mrproper distclean \ 484 no-dot-config-targets := clean mrproper distclean \
485 cscope gtags TAGS tags help %docs check% coccicheck \ 485 cscope gtags TAGS tags help %docs check% coccicheck \
486 $(version_h) headers_% archheaders archscripts \ 486 $(version_h) headers_% archheaders archscripts \
487 kernelversion %src-pkg 487 kernelversion %src-pkg
488 488
489 config-targets := 0 489 config-targets := 0
490 mixed-targets := 0 490 mixed-targets := 0
491 dot-config := 1 491 dot-config := 1
492 492
493 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 493 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
494 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 494 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
495 dot-config := 0 495 dot-config := 0
496 endif 496 endif
497 endif 497 endif
498 498
499 ifeq ($(KBUILD_EXTMOD),) 499 ifeq ($(KBUILD_EXTMOD),)
500 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 500 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
501 config-targets := 1 501 config-targets := 1
502 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 502 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
503 mixed-targets := 1 503 mixed-targets := 1
504 endif 504 endif
505 endif 505 endif
506 endif 506 endif
507 507
508 ifeq ($(mixed-targets),1) 508 ifeq ($(mixed-targets),1)
509 # =========================================================================== 509 # ===========================================================================
510 # We're called with mixed targets (*config and build targets). 510 # We're called with mixed targets (*config and build targets).
511 # Handle them one by one. 511 # Handle them one by one.
512 512
513 PHONY += $(MAKECMDGOALS) __build_one_by_one 513 PHONY += $(MAKECMDGOALS) __build_one_by_one
514 514
515 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 515 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
516 @: 516 @:
517 517
518 __build_one_by_one: 518 __build_one_by_one:
519 $(Q)set -e; \ 519 $(Q)set -e; \
520 for i in $(MAKECMDGOALS); do \ 520 for i in $(MAKECMDGOALS); do \
521 $(MAKE) -f $(srctree)/Makefile $$i; \ 521 $(MAKE) -f $(srctree)/Makefile $$i; \
522 done 522 done
523 523
524 else 524 else
525 ifeq ($(config-targets),1) 525 ifeq ($(config-targets),1)
526 # =========================================================================== 526 # ===========================================================================
527 # *config targets only - make sure prerequisites are updated, and descend 527 # *config targets only - make sure prerequisites are updated, and descend
528 # in scripts/kconfig to make the *config target 528 # in scripts/kconfig to make the *config target
529 529
530 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 530 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
531 # KBUILD_DEFCONFIG may point out an alternative default configuration 531 # KBUILD_DEFCONFIG may point out an alternative default configuration
532 # used for 'make defconfig' 532 # used for 'make defconfig'
533 include $(srctree)/arch/$(SRCARCH)/Makefile 533 include $(srctree)/arch/$(SRCARCH)/Makefile
534 export KBUILD_DEFCONFIG KBUILD_KCONFIG 534 export KBUILD_DEFCONFIG KBUILD_KCONFIG
535 535
536 config: scripts_basic outputmakefile FORCE 536 config: scripts_basic outputmakefile FORCE
537 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 537 $(Q)$(MAKE) $(build)=scripts/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 $@
541 541
542 else 542 else
543 # =========================================================================== 543 # ===========================================================================
544 # Build targets only - this includes vmlinux, arch specific targets, clean 544 # Build targets only - this includes vmlinux, arch specific targets, clean
545 # targets and others. In general all targets except *config targets. 545 # targets and others. In general all targets except *config targets.
546 546
547 ifeq ($(KBUILD_EXTMOD),) 547 ifeq ($(KBUILD_EXTMOD),)
548 # Additional helpers built in scripts/ 548 # Additional helpers built in scripts/
549 # Carefully list dependencies so we do not try to build scripts twice 549 # Carefully list dependencies so we do not try to build scripts twice
550 # in parallel 550 # in parallel
551 PHONY += scripts 551 PHONY += scripts
552 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ 552 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
553 asm-generic 553 asm-generic
554 $(Q)$(MAKE) $(build)=$(@) 554 $(Q)$(MAKE) $(build)=$(@)
555 555
556 # Objects we will link into vmlinux / subdirs we need to visit 556 # Objects we will link into vmlinux / subdirs we need to visit
557 init-y := init/ 557 init-y := init/
558 drivers-y := drivers/ sound/ firmware/ 558 drivers-y := drivers/ sound/ firmware/
559 net-y := net/ 559 net-y := net/
560 libs-y := lib/ 560 libs-y := lib/
561 core-y := usr/ 561 core-y := usr/
562 endif # KBUILD_EXTMOD 562 endif # KBUILD_EXTMOD
563 563
564 ifeq ($(dot-config),1) 564 ifeq ($(dot-config),1)
565 # Read in config 565 # Read in config
566 -include include/config/auto.conf 566 -include include/config/auto.conf
567 567
568 ifeq ($(KBUILD_EXTMOD),) 568 ifeq ($(KBUILD_EXTMOD),)
569 # Read in dependencies to all Kconfig* files, make sure to run 569 # Read in dependencies to all Kconfig* files, make sure to run
570 # oldconfig if changes are detected. 570 # oldconfig if changes are detected.
571 -include include/config/auto.conf.cmd 571 -include include/config/auto.conf.cmd
572 572
573 # To avoid any implicit rule to kick in, define an empty command 573 # To avoid any implicit rule to kick in, define an empty command
574 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 574 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
575 575
576 # If .config is newer than include/config/auto.conf, someone tinkered 576 # If .config is newer than include/config/auto.conf, someone tinkered
577 # with it and forgot to run make oldconfig. 577 # with it and forgot to run make oldconfig.
578 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 578 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
579 # we execute the config step to be sure to catch updated Kconfig files 579 # we execute the config step to be sure to catch updated Kconfig files
580 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 580 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
581 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 581 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
582 else 582 else
583 # external modules needs include/generated/autoconf.h and include/config/auto.conf 583 # external modules needs include/generated/autoconf.h and include/config/auto.conf
584 # but do not care if they are up-to-date. Use auto.conf to trigger the test 584 # but do not care if they are up-to-date. Use auto.conf to trigger the test
585 PHONY += include/config/auto.conf 585 PHONY += include/config/auto.conf
586 586
587 include/config/auto.conf: 587 include/config/auto.conf:
588 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 588 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
589 echo >&2; \ 589 echo >&2; \
590 echo >&2 " ERROR: Kernel configuration is invalid."; \ 590 echo >&2 " ERROR: Kernel configuration is invalid."; \
591 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 591 echo >&2 " include/generated/autoconf.h or $@ are missing.";\
592 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 592 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
593 echo >&2 ; \ 593 echo >&2 ; \
594 /bin/false) 594 /bin/false)
595 595
596 endif # KBUILD_EXTMOD 596 endif # KBUILD_EXTMOD
597 597
598 else 598 else
599 # Dummy target needed, because used as prerequisite 599 # Dummy target needed, because used as prerequisite
600 include/config/auto.conf: ; 600 include/config/auto.conf: ;
601 endif # $(dot-config) 601 endif # $(dot-config)
602 602
603 # The all: target is the default when no target is given on the 603 # The all: target is the default when no target is given on the
604 # command line. 604 # command line.
605 # This allow a user to issue only 'make' to build a kernel including modules 605 # This allow a user to issue only 'make' to build a kernel including modules
606 # Defaults to vmlinux, but the arch makefile usually adds further targets 606 # Defaults to vmlinux, but the arch makefile usually adds further targets
607 all: vmlinux 607 all: vmlinux
608 608
609 include $(srctree)/arch/$(SRCARCH)/Makefile 609 include $(srctree)/arch/$(SRCARCH)/Makefile
610 610
611 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 611 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
612 612
613 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 613 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
614 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) 614 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
615 else 615 else
616 KBUILD_CFLAGS += -O2 616 KBUILD_CFLAGS += -O2
617 endif 617 endif
618 618
619 # Tell gcc to never replace conditional load with a non-conditional one 619 # Tell gcc to never replace conditional load with a non-conditional one
620 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 620 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
621 621
622 ifdef CONFIG_READABLE_ASM 622 ifdef CONFIG_READABLE_ASM
623 # Disable optimizations that make assembler listings hard to read. 623 # Disable optimizations that make assembler listings hard to read.
624 # reorder blocks reorders the control in the function 624 # reorder blocks reorders the control in the function
625 # ipa clone creates specialized cloned functions 625 # ipa clone creates specialized cloned functions
626 # partial inlining inlines only parts of functions 626 # partial inlining inlines only parts of functions
627 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 627 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
628 $(call cc-option,-fno-ipa-cp-clone,) \ 628 $(call cc-option,-fno-ipa-cp-clone,) \
629 $(call cc-option,-fno-partial-inlining) 629 $(call cc-option,-fno-partial-inlining)
630 endif 630 endif
631 631
632 ifneq ($(CONFIG_FRAME_WARN),0) 632 ifneq ($(CONFIG_FRAME_WARN),0)
633 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 633 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
634 endif 634 endif
635 635
636 # Handle stack protector mode. 636 # Handle stack protector mode.
637 # 637 #
638 # Since kbuild can potentially perform two passes (first with the old 638 # Since kbuild can potentially perform two passes (first with the old
639 # .config values and then with updated .config values), we cannot error out 639 # .config values and then with updated .config values), we cannot error out
640 # if a desired compiler option is unsupported. If we were to error, kbuild 640 # if a desired compiler option is unsupported. If we were to error, kbuild
641 # could never get to the second pass and actually notice that we changed 641 # could never get to the second pass and actually notice that we changed
642 # the option to something that was supported. 642 # the option to something that was supported.
643 # 643 #
644 # Additionally, we don't want to fallback and/or silently change which compiler 644 # Additionally, we don't want to fallback and/or silently change which compiler
645 # flags will be used, since that leads to producing kernels with different 645 # flags will be used, since that leads to producing kernels with different
646 # security feature characteristics depending on the compiler used. ("But I 646 # security feature characteristics depending on the compiler used. ("But I
647 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") 647 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!")
648 # 648 #
649 # The middle ground is to warn here so that the failed option is obvious, but 649 # The middle ground is to warn here so that the failed option is obvious, but
650 # to let the build fail with bad compiler flags so that we can't produce a 650 # to let the build fail with bad compiler flags so that we can't produce a
651 # kernel when there is a CONFIG and compiler mismatch. 651 # kernel when there is a CONFIG and compiler mismatch.
652 # 652 #
653 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR 653 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
654 stackp-flag := -fstack-protector 654 stackp-flag := -fstack-protector
655 ifeq ($(call cc-option, $(stackp-flag)),) 655 ifeq ($(call cc-option, $(stackp-flag)),)
656 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ 656 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
657 -fstack-protector not supported by compiler) 657 -fstack-protector not supported by compiler)
658 endif 658 endif
659 else 659 else
660 ifdef CONFIG_CC_STACKPROTECTOR_STRONG 660 ifdef CONFIG_CC_STACKPROTECTOR_STRONG
661 stackp-flag := -fstack-protector-strong 661 stackp-flag := -fstack-protector-strong
662 ifeq ($(call cc-option, $(stackp-flag)),) 662 ifeq ($(call cc-option, $(stackp-flag)),)
663 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ 663 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
664 -fstack-protector-strong not supported by compiler) 664 -fstack-protector-strong not supported by compiler)
665 endif 665 endif
666 else 666 else
667 # Force off for distro compilers that enable stack protector by default. 667 # Force off for distro compilers that enable stack protector by default.
668 stackp-flag := $(call cc-option, -fno-stack-protector) 668 stackp-flag := $(call cc-option, -fno-stack-protector)
669 endif 669 endif
670 endif 670 endif
671 KBUILD_CFLAGS += $(stackp-flag) 671 KBUILD_CFLAGS += $(stackp-flag)
672 672
673 ifeq ($(COMPILER),clang) 673 ifeq ($(COMPILER),clang)
674 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 674 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
675 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) 675 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
676 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) 676 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
677 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 677 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
678 KBUILD_CFLAGS += $(call cc-disable-warning, gnu) 678 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
679 # Quiet clang warning: comparison of unsigned expression < 0 is always false 679 # Quiet clang warning: comparison of unsigned expression < 0 is always false
680 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) 680 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
681 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 681 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
682 # source of a reference will be _MergedGlobals and not on of the whitelisted names. 682 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
683 # See modpost pattern 2 683 # See modpost pattern 2
684 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) 684 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
685 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 685 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
686 else 686 else
687 687
688 # This warning generated too much noise in a regular build. 688 # This warning generated too much noise in a regular build.
689 # Use make W=1 to enable this warning (see scripts/Makefile.build) 689 # Use make W=1 to enable this warning (see scripts/Makefile.build)
690 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 690 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
691 endif 691 endif
692 692
693 ifdef CONFIG_FRAME_POINTER 693 ifdef CONFIG_FRAME_POINTER
694 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 694 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
695 else 695 else
696 # Some targets (ARM with Thumb2, for example), can't be built with frame 696 # Some targets (ARM with Thumb2, for example), can't be built with frame
697 # pointers. For those, we don't have FUNCTION_TRACER automatically 697 # pointers. For those, we don't have FUNCTION_TRACER automatically
698 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 698 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
699 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 699 # incompatible with -fomit-frame-pointer with current GCC, so we don't use
700 # -fomit-frame-pointer with FUNCTION_TRACER. 700 # -fomit-frame-pointer with FUNCTION_TRACER.
701 ifndef CONFIG_FUNCTION_TRACER 701 ifndef CONFIG_FUNCTION_TRACER
702 KBUILD_CFLAGS += -fomit-frame-pointer 702 KBUILD_CFLAGS += -fomit-frame-pointer
703 endif 703 endif
704 endif 704 endif
705 705
706 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 706 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
707 707
708 ifdef CONFIG_DEBUG_INFO 708 ifdef CONFIG_DEBUG_INFO
709 ifdef CONFIG_DEBUG_INFO_SPLIT 709 ifdef CONFIG_DEBUG_INFO_SPLIT
710 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 710 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g)
711 else 711 else
712 KBUILD_CFLAGS += -g 712 KBUILD_CFLAGS += -g
713 endif 713 endif
714 KBUILD_AFLAGS += -Wa,-gdwarf-2 714 KBUILD_AFLAGS += -Wa,-gdwarf-2
715 endif 715 endif
716 ifdef CONFIG_DEBUG_INFO_DWARF4 716 ifdef CONFIG_DEBUG_INFO_DWARF4
717 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 717 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,)
718 endif 718 endif
719 719
720 ifdef CONFIG_DEBUG_INFO_REDUCED 720 ifdef CONFIG_DEBUG_INFO_REDUCED
721 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 721 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
722 $(call cc-option,-fno-var-tracking) 722 $(call cc-option,-fno-var-tracking)
723 endif 723 endif
724 724
725 ifdef CONFIG_FUNCTION_TRACER 725 ifdef CONFIG_FUNCTION_TRACER
726 ifdef CONFIG_HAVE_FENTRY 726 ifdef CONFIG_HAVE_FENTRY
727 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 727 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
728 endif 728 endif
729 KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) 729 KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
730 KBUILD_AFLAGS += $(CC_USING_FENTRY) 730 KBUILD_AFLAGS += $(CC_USING_FENTRY)
731 ifdef CONFIG_DYNAMIC_FTRACE 731 ifdef CONFIG_DYNAMIC_FTRACE
732 ifdef CONFIG_HAVE_C_RECORDMCOUNT 732 ifdef CONFIG_HAVE_C_RECORDMCOUNT
733 BUILD_C_RECORDMCOUNT := y 733 BUILD_C_RECORDMCOUNT := y
734 export BUILD_C_RECORDMCOUNT 734 export BUILD_C_RECORDMCOUNT
735 endif 735 endif
736 endif 736 endif
737 endif 737 endif
738 738
739 # We trigger additional mismatches with less inlining 739 # We trigger additional mismatches with less inlining
740 ifdef CONFIG_DEBUG_SECTION_MISMATCH 740 ifdef CONFIG_DEBUG_SECTION_MISMATCH
741 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 741 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
742 endif 742 endif
743 743
744 # arch Makefile may override CC so keep this after arch Makefile is included 744 # arch Makefile may override CC so keep this after arch Makefile is included
745 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 745 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
746 CHECKFLAGS += $(NOSTDINC_FLAGS) 746 CHECKFLAGS += $(NOSTDINC_FLAGS)
747 747
748 # warn about C99 declaration after statement 748 # warn about C99 declaration after statement
749 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 749 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
750 750
751 # disable pointer signed / unsigned warnings in gcc 4.0 751 # disable pointer signed / unsigned warnings in gcc 4.0
752 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 752 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
753 753
754 # disable invalid "can't wrap" optimizations for signed / pointers 754 # disable invalid "can't wrap" optimizations for signed / pointers
755 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 755 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
756 756
757 # conserve stack if available 757 # conserve stack if available
758 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 758 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
759 759
760 # disallow errors like 'EXPORT_GPL(foo);' with missing header 760 # disallow errors like 'EXPORT_GPL(foo);' with missing header
761 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 761 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
762 762
763 # require functions to have arguments in prototypes, not empty 'int foo()' 763 # require functions to have arguments in prototypes, not empty 'int foo()'
764 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 764 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
765 765
766 # Prohibit date/time macros, which would make the build non-deterministic 766 # Prohibit date/time macros, which would make the build non-deterministic
767 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 767 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
768 768
769 # use the deterministic mode of AR if available 769 # use the deterministic mode of AR if available
770 KBUILD_ARFLAGS := $(call ar-option,D) 770 KBUILD_ARFLAGS := $(call ar-option,D)
771 771
772 # check for 'asm goto' 772 # check for 'asm goto'
773 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) 773 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
774 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 774 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
775 endif 775 endif
776 776
777 include $(srctree)/scripts/Makefile.extrawarn 777 include $(srctree)/scripts/Makefile.extrawarn
778 778
779 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 779 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
780 KBUILD_CPPFLAGS += $(KCPPFLAGS) 780 KBUILD_CPPFLAGS += $(KCPPFLAGS)
781 KBUILD_AFLAGS += $(KAFLAGS) 781 KBUILD_AFLAGS += $(KAFLAGS)
782 KBUILD_CFLAGS += $(KCFLAGS) 782 KBUILD_CFLAGS += $(KCFLAGS)
783 783
784 # Use --build-id when available. 784 # Use --build-id when available.
785 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 785 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
786 $(call cc-ldoption, -Wl$(comma)--build-id,)) 786 $(call cc-ldoption, -Wl$(comma)--build-id,))
787 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 787 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
788 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 788 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
789 789
790 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 790 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
791 LDFLAGS_vmlinux += $(call ld-option, -X,) 791 LDFLAGS_vmlinux += $(call ld-option, -X,)
792 endif 792 endif
793 793
794 # Default kernel image to build when no specific target is given. 794 # Default kernel image to build when no specific target is given.
795 # KBUILD_IMAGE may be overruled on the command line or 795 # KBUILD_IMAGE may be overruled on the command line or
796 # set in the environment 796 # set in the environment
797 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 797 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
798 # this default value 798 # this default value
799 export KBUILD_IMAGE ?= vmlinux 799 export KBUILD_IMAGE ?= vmlinux
800 800
801 # 801 #
802 # INSTALL_PATH specifies where to place the updated kernel and system map 802 # INSTALL_PATH specifies where to place the updated kernel and system map
803 # images. Default is /boot, but you can set it to other values 803 # images. Default is /boot, but you can set it to other values
804 export INSTALL_PATH ?= /boot 804 export INSTALL_PATH ?= /boot
805 805
806 # 806 #
807 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 807 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
808 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 808 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
809 # an argument if needed. Otherwise it defaults to the kernel install path 809 # an argument if needed. Otherwise it defaults to the kernel install path
810 # 810 #
811 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 811 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
812 812
813 # 813 #
814 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 814 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
815 # relocations required by build roots. This is not defined in the 815 # relocations required by build roots. This is not defined in the
816 # makefile but the argument can be passed to make if needed. 816 # makefile but the argument can be passed to make if needed.
817 # 817 #
818 818
819 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 819 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
820 export MODLIB 820 export MODLIB
821 821
822 # 822 #
823 # INSTALL_MOD_STRIP, if defined, will cause modules to be 823 # INSTALL_MOD_STRIP, if defined, will cause modules to be
824 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 824 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
825 # the default option --strip-debug will be used. Otherwise, 825 # the default option --strip-debug will be used. Otherwise,
826 # INSTALL_MOD_STRIP value will be used as the options to the strip command. 826 # INSTALL_MOD_STRIP value will be used as the options to the strip command.
827 827
828 ifdef INSTALL_MOD_STRIP 828 ifdef INSTALL_MOD_STRIP
829 ifeq ($(INSTALL_MOD_STRIP),1) 829 ifeq ($(INSTALL_MOD_STRIP),1)
830 mod_strip_cmd = $(STRIP) --strip-debug 830 mod_strip_cmd = $(STRIP) --strip-debug
831 else 831 else
832 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 832 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
833 endif # INSTALL_MOD_STRIP=1 833 endif # INSTALL_MOD_STRIP=1
834 else 834 else
835 mod_strip_cmd = true 835 mod_strip_cmd = true
836 endif # INSTALL_MOD_STRIP 836 endif # INSTALL_MOD_STRIP
837 export mod_strip_cmd 837 export mod_strip_cmd
838 838
839 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 839 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
840 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 840 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
841 # or CONFIG_MODULE_COMPRESS_XZ. 841 # or CONFIG_MODULE_COMPRESS_XZ.
842 842
843 mod_compress_cmd = true 843 mod_compress_cmd = true
844 ifdef CONFIG_MODULE_COMPRESS 844 ifdef CONFIG_MODULE_COMPRESS
845 ifdef CONFIG_MODULE_COMPRESS_GZIP 845 ifdef CONFIG_MODULE_COMPRESS_GZIP
846 mod_compress_cmd = gzip -n 846 mod_compress_cmd = gzip -n
847 endif # CONFIG_MODULE_COMPRESS_GZIP 847 endif # CONFIG_MODULE_COMPRESS_GZIP
848 ifdef CONFIG_MODULE_COMPRESS_XZ 848 ifdef CONFIG_MODULE_COMPRESS_XZ
849 mod_compress_cmd = xz 849 mod_compress_cmd = xz
850 endif # CONFIG_MODULE_COMPRESS_XZ 850 endif # CONFIG_MODULE_COMPRESS_XZ
851 endif # CONFIG_MODULE_COMPRESS 851 endif # CONFIG_MODULE_COMPRESS
852 export mod_compress_cmd 852 export mod_compress_cmd
853 853
854 # Select initial ramdisk compression format, default is gzip(1). 854 # Select initial ramdisk compression format, default is gzip(1).
855 # This shall be used by the dracut(8) tool while creating an initramfs image. 855 # This shall be used by the dracut(8) tool while creating an initramfs image.
856 # 856 #
857 INITRD_COMPRESS-y := gzip 857 INITRD_COMPRESS-y := gzip
858 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 858 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
859 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma 859 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
860 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz 860 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
861 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo 861 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
862 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 862 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
863 # do not export INITRD_COMPRESS, since we didn't actually 863 # do not export INITRD_COMPRESS, since we didn't actually
864 # choose a sane default compression above. 864 # choose a sane default compression above.
865 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 865 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
866 866
867 ifdef CONFIG_MODULE_SIG_ALL 867 ifdef CONFIG_MODULE_SIG_ALL
868 MODSECKEY = ./signing_key.priv 868 MODSECKEY = ./signing_key.priv
869 MODPUBKEY = ./signing_key.x509 869 MODPUBKEY = ./signing_key.x509
870 export MODPUBKEY 870 export MODPUBKEY
871 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) 871 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY)
872 else 872 else
873 mod_sign_cmd = true 873 mod_sign_cmd = true
874 endif 874 endif
875 export mod_sign_cmd 875 export mod_sign_cmd
876 876
877 877
878 ifeq ($(KBUILD_EXTMOD),) 878 ifeq ($(KBUILD_EXTMOD),)
879 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 879 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
880 880
881 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 881 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
882 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 882 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
883 $(net-y) $(net-m) $(libs-y) $(libs-m))) 883 $(net-y) $(net-m) $(libs-y) $(libs-m)))
884 884
885 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 885 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
886 $(init-) $(core-) $(drivers-) $(net-) $(libs-)))) 886 $(init-) $(core-) $(drivers-) $(net-) $(libs-))))
887 887
888 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 888 init-y := $(patsubst %/, %/built-in.o, $(init-y))
889 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 889 core-y := $(patsubst %/, %/built-in.o, $(core-y))
890 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 890 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
891 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 891 net-y := $(patsubst %/, %/built-in.o, $(net-y))
892 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 892 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
893 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 893 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
894 libs-y := $(libs-y1) $(libs-y2) 894 libs-y := $(libs-y1) $(libs-y2)
895 895
896 # Externally visible symbols (used by link-vmlinux.sh) 896 # Externally visible symbols (used by link-vmlinux.sh)
897 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) 897 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
898 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) 898 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
899 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 899 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
900 export LDFLAGS_vmlinux 900 export LDFLAGS_vmlinux
901 # used by scripts/pacmage/Makefile 901 # used by scripts/pacmage/Makefile
902 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) 902 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt)
903 903
904 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) 904 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
905 905
906 # Final link of vmlinux 906 # Final link of vmlinux
907 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) 907 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
908 quiet_cmd_link-vmlinux = LINK $@ 908 quiet_cmd_link-vmlinux = LINK $@
909 909
910 # Include targets which we want to 910 # Include targets which we want to
911 # execute if the rest of the kernel build went well. 911 # execute if the rest of the kernel build went well.
912 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE 912 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
913 ifdef CONFIG_HEADERS_CHECK 913 ifdef CONFIG_HEADERS_CHECK
914 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 914 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
915 endif 915 endif
916 ifdef CONFIG_SAMPLES 916 ifdef CONFIG_SAMPLES
917 $(Q)$(MAKE) $(build)=samples 917 $(Q)$(MAKE) $(build)=samples
918 endif 918 endif
919 ifdef CONFIG_BUILD_DOCSRC 919 ifdef CONFIG_BUILD_DOCSRC
920 $(Q)$(MAKE) $(build)=Documentation 920 $(Q)$(MAKE) $(build)=Documentation
921 endif 921 endif
922 +$(call if_changed,link-vmlinux) 922 +$(call if_changed,link-vmlinux)
923 923
924 # The actual objects are generated when descending, 924 # The actual objects are generated when descending,
925 # make sure no implicit rule kicks in 925 # make sure no implicit rule kicks in
926 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 926 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
927 927
928 # Handle descending into subdirectories listed in $(vmlinux-dirs) 928 # Handle descending into subdirectories listed in $(vmlinux-dirs)
929 # Preset locale variables to speed up the build process. Limit locale 929 # Preset locale variables to speed up the build process. Limit locale
930 # tweaks to this spot to avoid wrong language settings when running 930 # tweaks to this spot to avoid wrong language settings when running
931 # make menuconfig etc. 931 # make menuconfig etc.
932 # Error messages still appears in the original language 932 # Error messages still appears in the original language
933 933
934 PHONY += $(vmlinux-dirs) 934 PHONY += $(vmlinux-dirs)
935 $(vmlinux-dirs): prepare scripts 935 $(vmlinux-dirs): prepare scripts
936 $(Q)$(MAKE) $(build)=$@ 936 $(Q)$(MAKE) $(build)=$@
937 937
938 define filechk_kernel.release 938 define filechk_kernel.release
939 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 939 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
940 endef 940 endef
941 941
942 # Store (new) KERNELRELEASE string in include/config/kernel.release 942 # Store (new) KERNELRELEASE string in include/config/kernel.release
943 include/config/kernel.release: include/config/auto.conf FORCE 943 include/config/kernel.release: include/config/auto.conf FORCE
944 $(call filechk,kernel.release) 944 $(call filechk,kernel.release)
945 945
946 946
947 # Things we need to do before we recursively start building the kernel 947 # Things we need to do before we recursively start building the kernel
948 # or the modules are listed in "prepare". 948 # or the modules are listed in "prepare".
949 # A multi level approach is used. prepareN is processed before prepareN-1. 949 # A multi level approach is used. prepareN is processed before prepareN-1.
950 # archprepare is used in arch Makefiles and when processed asm symlink, 950 # archprepare is used in arch Makefiles and when processed asm symlink,
951 # version.h and scripts_basic is processed / created. 951 # version.h and scripts_basic is processed / created.
952 952
953 # Listed in dependency order 953 # Listed in dependency order
954 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 954 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
955 955
956 # prepare3 is used to check if we are building in a separate output directory, 956 # prepare3 is used to check if we are building in a separate output directory,
957 # and if so do: 957 # and if so do:
958 # 1) Check that make has not been executed in the kernel src $(srctree) 958 # 1) Check that make has not been executed in the kernel src $(srctree)
959 prepare3: include/config/kernel.release 959 prepare3: include/config/kernel.release
960 ifneq ($(KBUILD_SRC),) 960 ifneq ($(KBUILD_SRC),)
961 @$(kecho) ' Using $(srctree) as source for kernel' 961 @$(kecho) ' Using $(srctree) as source for kernel'
962 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 962 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
963 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 963 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
964 echo >&2 " in the '$(srctree)' directory.";\ 964 echo >&2 " in the '$(srctree)' directory.";\
965 /bin/false; \ 965 /bin/false; \
966 fi; 966 fi;
967 endif 967 endif
968 968
969 # prepare2 creates a makefile if using a separate output directory 969 # prepare2 creates a makefile if using a separate output directory
970 prepare2: prepare3 outputmakefile asm-generic 970 prepare2: prepare3 outputmakefile asm-generic
971 971
972 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ 972 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
973 include/config/auto.conf 973 include/config/auto.conf
974 $(cmd_crmodverdir) 974 $(cmd_crmodverdir)
975 975
976 archprepare: archheaders archscripts prepare1 scripts_basic 976 archprepare: archheaders archscripts prepare1 scripts_basic
977 977
978 prepare0: archprepare FORCE 978 prepare0: archprepare FORCE
979 $(Q)$(MAKE) $(build)=. 979 $(Q)$(MAKE) $(build)=.
980 980
981 # All the preparing.. 981 # All the preparing..
982 prepare: prepare0 982 prepare: prepare0
983 983
984 # Generate some files 984 # Generate some files
985 # --------------------------------------------------------------------------- 985 # ---------------------------------------------------------------------------
986 986
987 # KERNELRELEASE can change from a few different places, meaning version.h 987 # KERNELRELEASE can change from a few different places, meaning version.h
988 # needs to be updated, so this check is forced on all builds 988 # needs to be updated, so this check is forced on all builds
989 989
990 uts_len := 64 990 uts_len := 64
991 define filechk_utsrelease.h 991 define filechk_utsrelease.h
992 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 992 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
993 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 993 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
994 exit 1; \ 994 exit 1; \
995 fi; \ 995 fi; \
996 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 996 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
997 endef 997 endef
998 998
999 define filechk_version.h 999 define filechk_version.h
1000 (echo \#define LINUX_VERSION_CODE $(shell \ 1000 (echo \#define LINUX_VERSION_CODE $(shell \
1001 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1001 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
1002 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1002 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1003 endef 1003 endef
1004 1004
1005 $(version_h): $(srctree)/Makefile FORCE 1005 $(version_h): $(srctree)/Makefile FORCE
1006 $(call filechk,version.h) 1006 $(call filechk,version.h)
1007 1007
1008 include/generated/utsrelease.h: include/config/kernel.release FORCE 1008 include/generated/utsrelease.h: include/config/kernel.release FORCE
1009 $(call filechk,utsrelease.h) 1009 $(call filechk,utsrelease.h)
1010 1010
1011 PHONY += headerdep 1011 PHONY += headerdep
1012 headerdep: 1012 headerdep:
1013 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1013 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
1014 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1014 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
1015 1015
1016 # --------------------------------------------------------------------------- 1016 # ---------------------------------------------------------------------------
1017 1017
1018 PHONY += depend dep 1018 PHONY += depend dep
1019 depend dep: 1019 depend dep:
1020 @echo '*** Warning: make $@ is unnecessary now.' 1020 @echo '*** Warning: make $@ is unnecessary now.'
1021 1021
1022 # --------------------------------------------------------------------------- 1022 # ---------------------------------------------------------------------------
1023 # Firmware install 1023 # Firmware install
1024 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1024 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1025 export INSTALL_FW_PATH 1025 export INSTALL_FW_PATH
1026 1026
1027 PHONY += firmware_install 1027 PHONY += firmware_install
1028 firmware_install: FORCE 1028 firmware_install: FORCE
1029 @mkdir -p $(objtree)/firmware 1029 @mkdir -p $(objtree)/firmware
1030 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1030 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1031 1031
1032 # --------------------------------------------------------------------------- 1032 # ---------------------------------------------------------------------------
1033 # Kernel headers 1033 # Kernel headers
1034 1034
1035 #Default location for installed headers 1035 #Default location for installed headers
1036 export INSTALL_HDR_PATH = $(objtree)/usr 1036 export INSTALL_HDR_PATH = $(objtree)/usr
1037 1037
1038 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 1038 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
1039 1039
1040 # If we do an all arch process set dst to asm-$(hdr-arch) 1040 # If we do an all arch process set dst to asm-$(hdr-arch)
1041 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1041 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1042 1042
1043 PHONY += archheaders 1043 PHONY += archheaders
1044 archheaders: 1044 archheaders:
1045 1045
1046 PHONY += archscripts 1046 PHONY += archscripts
1047 archscripts: 1047 archscripts:
1048 1048
1049 PHONY += __headers 1049 PHONY += __headers
1050 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE 1050 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
1051 $(Q)$(MAKE) $(build)=scripts build_unifdef 1051 $(Q)$(MAKE) $(build)=scripts build_unifdef
1052 1052
1053 PHONY += headers_install_all 1053 PHONY += headers_install_all
1054 headers_install_all: 1054 headers_install_all:
1055 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1055 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1056 1056
1057 PHONY += headers_install 1057 PHONY += headers_install
1058 headers_install: __headers 1058 headers_install: __headers
1059 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ 1059 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
1060 $(error Headers not exportable for the $(SRCARCH) architecture)) 1060 $(error Headers not exportable for the $(SRCARCH) architecture))
1061 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1061 $(Q)$(MAKE) $(hdr-inst)=include/uapi
1062 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) 1062 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
1063 1063
1064 PHONY += headers_check_all 1064 PHONY += headers_check_all
1065 headers_check_all: headers_install_all 1065 headers_check_all: headers_install_all
1066 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1066 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1067 1067
1068 PHONY += headers_check 1068 PHONY += headers_check
1069 headers_check: headers_install 1069 headers_check: headers_install
1070 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 1070 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1071 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 1071 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
1072 1072
1073 # --------------------------------------------------------------------------- 1073 # ---------------------------------------------------------------------------
1074 # Kernel selftest 1074 # Kernel selftest
1075 1075
1076 PHONY += kselftest 1076 PHONY += kselftest
1077 kselftest: 1077 kselftest:
1078 $(Q)$(MAKE) -C tools/testing/selftests run_tests 1078 $(Q)$(MAKE) -C tools/testing/selftests run_tests
1079 1079
1080 # --------------------------------------------------------------------------- 1080 # ---------------------------------------------------------------------------
1081 # Modules 1081 # Modules
1082 1082
1083 ifdef CONFIG_MODULES 1083 ifdef CONFIG_MODULES
1084 1084
1085 # By default, build modules as well 1085 # By default, build modules as well
1086 1086
1087 all: modules 1087 all: modules
1088 1088
1089 # Build modules 1089 # Build modules
1090 # 1090 #
1091 # A module can be listed more than once in obj-m resulting in 1091 # A module can be listed more than once in obj-m resulting in
1092 # duplicate lines in modules.order files. Those are removed 1092 # duplicate lines in modules.order files. Those are removed
1093 # using awk while concatenating to the final file. 1093 # using awk while concatenating to the final file.
1094 1094
1095 PHONY += modules 1095 PHONY += modules
1096 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1096 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
1097 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1097 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1098 @$(kecho) ' Building modules, stage 2.'; 1098 @$(kecho) ' Building modules, stage 2.';
1099 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1099 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1100 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1100 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1101 1101
1102 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1102 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1103 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1103 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1104 1104
1105 %/modules.builtin: include/config/auto.conf 1105 %/modules.builtin: include/config/auto.conf
1106 $(Q)$(MAKE) $(modbuiltin)=$* 1106 $(Q)$(MAKE) $(modbuiltin)=$*
1107 1107
1108 1108
1109 # Target to prepare building external modules 1109 # Target to prepare building external modules
1110 PHONY += modules_prepare 1110 PHONY += modules_prepare
1111 modules_prepare: prepare scripts 1111 modules_prepare: prepare scripts
1112 1112
1113 # Target to install modules 1113 # Target to install modules
1114 PHONY += modules_install 1114 PHONY += modules_install
1115 modules_install: _modinst_ _modinst_post 1115 modules_install: _modinst_ _modinst_post
1116 1116
1117 PHONY += _modinst_ 1117 PHONY += _modinst_
1118 _modinst_: 1118 _modinst_:
1119 @rm -rf $(MODLIB)/kernel 1119 @rm -rf $(MODLIB)/kernel
1120 @rm -f $(MODLIB)/source 1120 @rm -f $(MODLIB)/source
1121 @mkdir -p $(MODLIB)/kernel 1121 @mkdir -p $(MODLIB)/kernel
1122 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source 1122 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
1123 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1123 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1124 rm -f $(MODLIB)/build ; \ 1124 rm -f $(MODLIB)/build ; \
1125 ln -s $(CURDIR) $(MODLIB)/build ; \ 1125 ln -s $(CURDIR) $(MODLIB)/build ; \
1126 fi 1126 fi
1127 @cp -f $(objtree)/modules.order $(MODLIB)/ 1127 @cp -f $(objtree)/modules.order $(MODLIB)/
1128 @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1128 @cp -f $(objtree)/modules.builtin $(MODLIB)/
1129 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1129 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1130 1130
1131 # This depmod is only for convenience to give the initial 1131 # This depmod is only for convenience to give the initial
1132 # boot a modules.dep even before / is mounted read-write. However the 1132 # boot a modules.dep even before / is mounted read-write. However the
1133 # boot script depmod is the master version. 1133 # boot script depmod is the master version.
1134 PHONY += _modinst_post 1134 PHONY += _modinst_post
1135 _modinst_post: _modinst_ 1135 _modinst_post: _modinst_
1136 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1136 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1137 $(call cmd,depmod) 1137 $(call cmd,depmod)
1138 1138
1139 ifeq ($(CONFIG_MODULE_SIG), y) 1139 ifeq ($(CONFIG_MODULE_SIG), y)
1140 PHONY += modules_sign 1140 PHONY += modules_sign
1141 modules_sign: 1141 modules_sign:
1142 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1142 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1143 endif 1143 endif
1144 1144
1145 else # CONFIG_MODULES 1145 else # CONFIG_MODULES
1146 1146
1147 # Modules not configured 1147 # Modules not configured
1148 # --------------------------------------------------------------------------- 1148 # ---------------------------------------------------------------------------
1149 1149
1150 modules modules_install: FORCE 1150 modules modules_install: FORCE
1151 @echo >&2 1151 @echo >&2
1152 @echo >&2 "The present kernel configuration has modules disabled." 1152 @echo >&2 "The present kernel configuration has modules disabled."
1153 @echo >&2 "Type 'make config' and enable loadable module support." 1153 @echo >&2 "Type 'make config' and enable loadable module support."
1154 @echo >&2 "Then build a kernel with module support enabled." 1154 @echo >&2 "Then build a kernel with module support enabled."
1155 @echo >&2 1155 @echo >&2
1156 @exit 1 1156 @exit 1
1157 1157
1158 endif # CONFIG_MODULES 1158 endif # CONFIG_MODULES
1159 1159
1160 ### 1160 ###
1161 # Cleaning is done on three levels. 1161 # Cleaning is done on three levels.
1162 # make clean Delete most generated files 1162 # make clean Delete most generated files
1163 # Leave enough to build external modules 1163 # Leave enough to build external modules
1164 # make mrproper Delete the current configuration, and all generated files 1164 # make mrproper Delete the current configuration, and all generated files
1165 # make distclean Remove editor backup files, patch leftover files and the like 1165 # make distclean Remove editor backup files, patch leftover files and the like
1166 1166
1167 # Directories & files removed with 'make clean' 1167 # Directories & files removed with 'make clean'
1168 CLEAN_DIRS += $(MODVERDIR) 1168 CLEAN_DIRS += $(MODVERDIR)
1169 1169
1170 # Directories & files removed with 'make mrproper' 1170 # Directories & files removed with 'make mrproper'
1171 MRPROPER_DIRS += include/config usr/include include/generated \ 1171 MRPROPER_DIRS += include/config usr/include include/generated \
1172 arch/*/include/generated .tmp_objdiff 1172 arch/*/include/generated .tmp_objdiff
1173 MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ 1173 MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
1174 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1174 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1175 signing_key.priv signing_key.x509 x509.genkey \ 1175 signing_key.priv signing_key.x509 x509.genkey \
1176 extra_certificates signing_key.x509.keyid \ 1176 extra_certificates signing_key.x509.keyid \
1177 signing_key.x509.signer include/linux/version.h 1177 signing_key.x509.signer include/linux/version.h
1178 1178
1179 # clean - Delete most, but leave enough to build external modules 1179 # clean - Delete most, but leave enough to build external modules
1180 # 1180 #
1181 clean: rm-dirs := $(CLEAN_DIRS) 1181 clean: rm-dirs := $(CLEAN_DIRS)
1182 clean: rm-files := $(CLEAN_FILES) 1182 clean: rm-files := $(CLEAN_FILES)
1183 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1183 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1184 1184
1185 PHONY += $(clean-dirs) clean archclean vmlinuxclean 1185 PHONY += $(clean-dirs) clean archclean vmlinuxclean
1186 $(clean-dirs): 1186 $(clean-dirs):
1187 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1187 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1188 1188
1189 vmlinuxclean: 1189 vmlinuxclean:
1190 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1190 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1191 1191
1192 clean: archclean vmlinuxclean 1192 clean: archclean vmlinuxclean
1193 1193
1194 # mrproper - Delete all generated files, including .config 1194 # mrproper - Delete all generated files, including .config
1195 # 1195 #
1196 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1196 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1197 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1197 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1198 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1198 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1199 1199
1200 PHONY += $(mrproper-dirs) mrproper archmrproper 1200 PHONY += $(mrproper-dirs) mrproper archmrproper
1201 $(mrproper-dirs): 1201 $(mrproper-dirs):
1202 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1202 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1203 1203
1204 mrproper: clean archmrproper $(mrproper-dirs) 1204 mrproper: clean archmrproper $(mrproper-dirs)
1205 $(call cmd,rmdirs) 1205 $(call cmd,rmdirs)
1206 $(call cmd,rmfiles) 1206 $(call cmd,rmfiles)
1207 1207
1208 # distclean 1208 # distclean
1209 # 1209 #
1210 PHONY += distclean 1210 PHONY += distclean
1211 1211
1212 distclean: mrproper 1212 distclean: mrproper
1213 @find $(srctree) $(RCS_FIND_IGNORE) \ 1213 @find $(srctree) $(RCS_FIND_IGNORE) \
1214 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1214 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1215 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1215 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1216 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ 1216 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
1217 -type f -print | xargs rm -f 1217 -type f -print | xargs rm -f
1218 1218
1219 1219
1220 # Packaging of the kernel to various formats 1220 # Packaging of the kernel to various formats
1221 # --------------------------------------------------------------------------- 1221 # ---------------------------------------------------------------------------
1222 # rpm target kept for backward compatibility 1222 # rpm target kept for backward compatibility
1223 package-dir := scripts/package 1223 package-dir := scripts/package
1224 1224
1225 %src-pkg: FORCE 1225 %src-pkg: FORCE
1226 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1226 $(Q)$(MAKE) $(build)=$(package-dir) $@
1227 %pkg: include/config/kernel.release FORCE 1227 %pkg: include/config/kernel.release FORCE
1228 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1228 $(Q)$(MAKE) $(build)=$(package-dir) $@
1229 rpm: include/config/kernel.release FORCE 1229 rpm: include/config/kernel.release FORCE
1230 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1230 $(Q)$(MAKE) $(build)=$(package-dir) $@
1231 1231
1232 1232
1233 # Brief documentation of the typical targets used 1233 # Brief documentation of the typical targets used
1234 # --------------------------------------------------------------------------- 1234 # ---------------------------------------------------------------------------
1235 1235
1236 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1236 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1237 boards := $(notdir $(boards)) 1237 boards := $(notdir $(boards))
1238 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1238 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1239 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1239 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1240 1240
1241 help: 1241 help:
1242 @echo 'Cleaning targets:' 1242 @echo 'Cleaning targets:'
1243 @echo ' clean - Remove most generated files but keep the config and' 1243 @echo ' clean - Remove most generated files but keep the config and'
1244 @echo ' enough build support to build external modules' 1244 @echo ' enough build support to build external modules'
1245 @echo ' mrproper - Remove all generated files + config + various backup files' 1245 @echo ' mrproper - Remove all generated files + config + various backup files'
1246 @echo ' distclean - mrproper + remove editor backup and patch files' 1246 @echo ' distclean - mrproper + remove editor backup and patch files'
1247 @echo '' 1247 @echo ''
1248 @echo 'Configuration targets:' 1248 @echo 'Configuration targets:'
1249 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1249 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1250 @echo '' 1250 @echo ''
1251 @echo 'Other generic targets:' 1251 @echo 'Other generic targets:'
1252 @echo ' all - Build all targets marked with [*]' 1252 @echo ' all - Build all targets marked with [*]'
1253 @echo '* vmlinux - Build the bare kernel' 1253 @echo '* vmlinux - Build the bare kernel'
1254 @echo '* modules - Build all modules' 1254 @echo '* modules - Build all modules'
1255 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1255 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1256 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1256 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1257 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1257 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1258 @echo ' dir/ - Build all files in dir and below' 1258 @echo ' dir/ - Build all files in dir and below'
1259 @echo ' dir/file.[oisS] - Build specified target only' 1259 @echo ' dir/file.[oisS] - Build specified target only'
1260 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1260 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1261 @echo ' (requires a recent binutils and recent build (System.map))' 1261 @echo ' (requires a recent binutils and recent build (System.map))'
1262 @echo ' dir/file.ko - Build module including final link' 1262 @echo ' dir/file.ko - Build module including final link'
1263 @echo ' modules_prepare - Set up for building external modules' 1263 @echo ' modules_prepare - Set up for building external modules'
1264 @echo ' tags/TAGS - Generate tags file for editors' 1264 @echo ' tags/TAGS - Generate tags file for editors'
1265 @echo ' cscope - Generate cscope index' 1265 @echo ' cscope - Generate cscope index'
1266 @echo ' gtags - Generate GNU GLOBAL index' 1266 @echo ' gtags - Generate GNU GLOBAL index'
1267 @echo ' kernelrelease - Output the release version string (use with make -s)' 1267 @echo ' kernelrelease - Output the release version string (use with make -s)'
1268 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1268 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)'
1269 @echo ' image_name - Output the image name (use with make -s)' 1269 @echo ' image_name - Output the image name (use with make -s)'
1270 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1270 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1271 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1271 echo ' (default: $(INSTALL_HDR_PATH))'; \
1272 echo '' 1272 echo ''
1273 @echo 'Static analysers' 1273 @echo 'Static analysers'
1274 @echo ' checkstack - Generate a list of stack hogs' 1274 @echo ' checkstack - Generate a list of stack hogs'
1275 @echo ' namespacecheck - Name space analysis on compiled kernel' 1275 @echo ' namespacecheck - Name space analysis on compiled kernel'
1276 @echo ' versioncheck - Sanity check on version.h usage' 1276 @echo ' versioncheck - Sanity check on version.h usage'
1277 @echo ' includecheck - Check for duplicate included header files' 1277 @echo ' includecheck - Check for duplicate included header files'
1278 @echo ' export_report - List the usages of all exported symbols' 1278 @echo ' export_report - List the usages of all exported symbols'
1279 @echo ' headers_check - Sanity check on exported headers' 1279 @echo ' headers_check - Sanity check on exported headers'
1280 @echo ' headerdep - Detect inclusion cycles in headers' 1280 @echo ' headerdep - Detect inclusion cycles in headers'
1281 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1281 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1282 @echo '' 1282 @echo ''
1283 @echo 'Kernel selftest' 1283 @echo 'Kernel selftest'
1284 @echo ' kselftest - Build and run kernel selftest (run as root)' 1284 @echo ' kselftest - Build and run kernel selftest (run as root)'
1285 @echo ' Build, install, and boot kernel before' 1285 @echo ' Build, install, and boot kernel before'
1286 @echo ' running kselftest on it' 1286 @echo ' running kselftest on it'
1287 @echo '' 1287 @echo ''
1288 @echo 'Kernel packaging:' 1288 @echo 'Kernel packaging:'
1289 @$(MAKE) $(build)=$(package-dir) help 1289 @$(MAKE) $(build)=$(package-dir) help
1290 @echo '' 1290 @echo ''
1291 @echo 'Documentation targets:' 1291 @echo 'Documentation targets:'
1292 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1292 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1293 @echo '' 1293 @echo ''
1294 @echo 'Architecture specific targets ($(SRCARCH)):' 1294 @echo 'Architecture specific targets ($(SRCARCH)):'
1295 @$(if $(archhelp),$(archhelp),\ 1295 @$(if $(archhelp),$(archhelp),\
1296 echo ' No architecture specific help defined for $(SRCARCH)') 1296 echo ' No architecture specific help defined for $(SRCARCH)')
1297 @echo '' 1297 @echo ''
1298 @$(if $(boards), \ 1298 @$(if $(boards), \
1299 $(foreach b, $(boards), \ 1299 $(foreach b, $(boards), \
1300 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1300 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1301 echo '') 1301 echo '')
1302 @$(if $(board-dirs), \ 1302 @$(if $(board-dirs), \
1303 $(foreach b, $(board-dirs), \ 1303 $(foreach b, $(board-dirs), \
1304 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1304 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1305 printf " %-16s - Show all of the above\\n" help-boards; \ 1305 printf " %-16s - Show all of the above\\n" help-boards; \
1306 echo '') 1306 echo '')
1307 1307
1308 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1308 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1309 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1309 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1310 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1310 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1311 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1311 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1312 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1312 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1313 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1313 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1314 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1314 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1315 @echo ' 1: warnings which may be relevant and do not occur too often' 1315 @echo ' 1: warnings which may be relevant and do not occur too often'
1316 @echo ' 2: warnings which occur quite often but may still be relevant' 1316 @echo ' 2: warnings which occur quite often but may still be relevant'
1317 @echo ' 3: more obscure warnings, can most likely be ignored' 1317 @echo ' 3: more obscure warnings, can most likely be ignored'
1318 @echo ' Multiple levels can be combined with W=12 or W=123' 1318 @echo ' Multiple levels can be combined with W=12 or W=123'
1319 @echo '' 1319 @echo ''
1320 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1320 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1321 @echo 'For further info see the ./README file' 1321 @echo 'For further info see the ./README file'
1322 1322
1323 1323
1324 help-board-dirs := $(addprefix help-,$(board-dirs)) 1324 help-board-dirs := $(addprefix help-,$(board-dirs))
1325 1325
1326 help-boards: $(help-board-dirs) 1326 help-boards: $(help-board-dirs)
1327 1327
1328 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) 1328 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1329 1329
1330 $(help-board-dirs): help-%: 1330 $(help-board-dirs): help-%:
1331 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1331 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1332 @$(if $(boards-per-dir), \ 1332 @$(if $(boards-per-dir), \
1333 $(foreach b, $(boards-per-dir), \ 1333 $(foreach b, $(boards-per-dir), \
1334 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1334 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1335 echo '') 1335 echo '')
1336 1336
1337 1337
1338 # Documentation targets 1338 # Documentation targets
1339 # --------------------------------------------------------------------------- 1339 # ---------------------------------------------------------------------------
1340 %docs: scripts_basic FORCE 1340 %docs: scripts_basic FORCE
1341 $(Q)$(MAKE) $(build)=scripts build_docproc 1341 $(Q)$(MAKE) $(build)=scripts build_docproc
1342 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1342 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1343 1343
1344 else # KBUILD_EXTMOD 1344 else # KBUILD_EXTMOD
1345 1345
1346 ### 1346 ###
1347 # External module support. 1347 # External module support.
1348 # When building external modules the kernel used as basis is considered 1348 # When building external modules the kernel used as basis is considered
1349 # read-only, and no consistency checks are made and the make 1349 # read-only, and no consistency checks are made and the make
1350 # system is not used on the basis kernel. If updates are required 1350 # system is not used on the basis kernel. If updates are required
1351 # in the basis kernel ordinary make commands (without M=...) must 1351 # in the basis kernel ordinary make commands (without M=...) must
1352 # be used. 1352 # be used.
1353 # 1353 #
1354 # The following are the only valid targets when building external 1354 # The following are the only valid targets when building external
1355 # modules. 1355 # modules.
1356 # make M=dir clean Delete all automatically generated files 1356 # make M=dir clean Delete all automatically generated files
1357 # make M=dir modules Make all modules in specified dir 1357 # make M=dir modules Make all modules in specified dir
1358 # make M=dir Same as 'make M=dir modules' 1358 # make M=dir Same as 'make M=dir modules'
1359 # make M=dir modules_install 1359 # make M=dir modules_install
1360 # Install the modules built in the module directory 1360 # Install the modules built in the module directory
1361 # Assumes install directory is already created 1361 # Assumes install directory is already created
1362 1362
1363 # We are always building modules 1363 # We are always building modules
1364 KBUILD_MODULES := 1 1364 KBUILD_MODULES := 1
1365 PHONY += crmodverdir 1365 PHONY += crmodverdir
1366 crmodverdir: 1366 crmodverdir:
1367 $(cmd_crmodverdir) 1367 $(cmd_crmodverdir)
1368 1368
1369 PHONY += $(objtree)/Module.symvers 1369 PHONY += $(objtree)/Module.symvers
1370 $(objtree)/Module.symvers: 1370 $(objtree)/Module.symvers:
1371 @test -e $(objtree)/Module.symvers || ( \ 1371 @test -e $(objtree)/Module.symvers || ( \
1372 echo; \ 1372 echo; \
1373 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1373 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1374 echo " is missing; modules will have no dependencies and modversions."; \ 1374 echo " is missing; modules will have no dependencies and modversions."; \
1375 echo ) 1375 echo )
1376 1376
1377 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1377 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1378 PHONY += $(module-dirs) modules 1378 PHONY += $(module-dirs) modules
1379 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1379 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1380 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1380 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1381 1381
1382 modules: $(module-dirs) 1382 modules: $(module-dirs)
1383 @$(kecho) ' Building modules, stage 2.'; 1383 @$(kecho) ' Building modules, stage 2.';
1384 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1384 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1385 1385
1386 PHONY += modules_install 1386 PHONY += modules_install
1387 modules_install: _emodinst_ _emodinst_post 1387 modules_install: _emodinst_ _emodinst_post
1388 1388
1389 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1389 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1390 PHONY += _emodinst_ 1390 PHONY += _emodinst_
1391 _emodinst_: 1391 _emodinst_:
1392 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1392 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1393 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1393 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1394 1394
1395 PHONY += _emodinst_post 1395 PHONY += _emodinst_post
1396 _emodinst_post: _emodinst_ 1396 _emodinst_post: _emodinst_
1397 $(call cmd,depmod) 1397 $(call cmd,depmod)
1398 1398
1399 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1399 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1400 1400
1401 PHONY += $(clean-dirs) clean 1401 PHONY += $(clean-dirs) clean
1402 $(clean-dirs): 1402 $(clean-dirs):
1403 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1403 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1404 1404
1405 clean: rm-dirs := $(MODVERDIR) 1405 clean: rm-dirs := $(MODVERDIR)
1406 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1406 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1407 1407
1408 help: 1408 help:
1409 @echo ' Building external modules.' 1409 @echo ' Building external modules.'
1410 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1410 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1411 @echo '' 1411 @echo ''
1412 @echo ' modules - default target, build the module(s)' 1412 @echo ' modules - default target, build the module(s)'
1413 @echo ' modules_install - install the module' 1413 @echo ' modules_install - install the module'
1414 @echo ' clean - remove generated files in module directory only' 1414 @echo ' clean - remove generated files in module directory only'
1415 @echo '' 1415 @echo ''
1416 1416
1417 # Dummies... 1417 # Dummies...
1418 PHONY += prepare scripts 1418 PHONY += prepare scripts
1419 prepare: ; 1419 prepare: ;
1420 scripts: ; 1420 scripts: ;
1421 endif # KBUILD_EXTMOD 1421 endif # KBUILD_EXTMOD
1422 1422
1423 clean: $(clean-dirs) 1423 clean: $(clean-dirs)
1424 $(call cmd,rmdirs) 1424 $(call cmd,rmdirs)
1425 $(call cmd,rmfiles) 1425 $(call cmd,rmfiles)
1426 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1426 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1427 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1427 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1428 -o -name '*.ko.*' \ 1428 -o -name '*.ko.*' \
1429 -o -name '*.dwo' \ 1429 -o -name '*.dwo' \
1430 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1430 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1431 -o -name '*.symtypes' -o -name 'modules.order' \ 1431 -o -name '*.symtypes' -o -name 'modules.order' \
1432 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1432 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1433 -o -name '*.gcno' \) -type f -print | xargs rm -f 1433 -o -name '*.gcno' \) -type f -print | xargs rm -f
1434 1434
1435 # Generate tags for editors 1435 # Generate tags for editors
1436 # --------------------------------------------------------------------------- 1436 # ---------------------------------------------------------------------------
1437 quiet_cmd_tags = GEN $@ 1437 quiet_cmd_tags = GEN $@
1438 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1438 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1439 1439
1440 tags TAGS cscope gtags: FORCE 1440 tags TAGS cscope gtags: FORCE
1441 $(call cmd,tags) 1441 $(call cmd,tags)
1442 1442
1443 # Scripts to check various things for consistency 1443 # Scripts to check various things for consistency
1444 # --------------------------------------------------------------------------- 1444 # ---------------------------------------------------------------------------
1445 1445
1446 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 1446 PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1447 1447
1448 includecheck: 1448 includecheck:
1449 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1449 find $(srctree)/* $(RCS_FIND_IGNORE) \
1450 -name '*.[hcS]' -type f -print | sort \ 1450 -name '*.[hcS]' -type f -print | sort \
1451 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1451 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1452 1452
1453 versioncheck: 1453 versioncheck:
1454 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1454 find $(srctree)/* $(RCS_FIND_IGNORE) \
1455 -name '*.[hcS]' -type f -print | sort \ 1455 -name '*.[hcS]' -type f -print | sort \
1456 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1456 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1457 1457
1458 coccicheck: 1458 coccicheck:
1459 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1459 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1460 1460
1461 namespacecheck: 1461 namespacecheck:
1462 $(PERL) $(srctree)/scripts/namespace.pl 1462 $(PERL) $(srctree)/scripts/namespace.pl
1463 1463
1464 export_report: 1464 export_report:
1465 $(PERL) $(srctree)/scripts/export_report.pl 1465 $(PERL) $(srctree)/scripts/export_report.pl
1466 1466
1467 endif #ifeq ($(config-targets),1) 1467 endif #ifeq ($(config-targets),1)
1468 endif #ifeq ($(mixed-targets),1) 1468 endif #ifeq ($(mixed-targets),1)
1469 1469
1470 PHONY += checkstack kernelrelease kernelversion image_name 1470 PHONY += checkstack kernelrelease kernelversion image_name
1471 1471
1472 # UML needs a little special treatment here. It wants to use the host 1472 # UML needs a little special treatment here. It wants to use the host
1473 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1473 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1474 # else wants $(ARCH), including people doing cross-builds, which means 1474 # else wants $(ARCH), including people doing cross-builds, which means
1475 # that $(SUBARCH) doesn't work here. 1475 # that $(SUBARCH) doesn't work here.
1476 ifeq ($(ARCH), um) 1476 ifeq ($(ARCH), um)
1477 CHECKSTACK_ARCH := $(SUBARCH) 1477 CHECKSTACK_ARCH := $(SUBARCH)
1478 else 1478 else
1479 CHECKSTACK_ARCH := $(ARCH) 1479 CHECKSTACK_ARCH := $(ARCH)
1480 endif 1480 endif
1481 checkstack: 1481 checkstack:
1482 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1482 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1483 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1483 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1484 1484
1485 kernelrelease: 1485 kernelrelease:
1486 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1486 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1487 1487
1488 kernelversion: 1488 kernelversion:
1489 @echo $(KERNELVERSION) 1489 @echo $(KERNELVERSION)
1490 1490
1491 image_name: 1491 image_name:
1492 @echo $(KBUILD_IMAGE) 1492 @echo $(KBUILD_IMAGE)
1493 1493
1494 # Clear a bunch of variables before executing the submake 1494 # Clear a bunch of variables before executing the submake
1495 tools/: FORCE 1495 tools/: FORCE
1496 $(Q)mkdir -p $(objtree)/tools 1496 $(Q)mkdir -p $(objtree)/tools
1497 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ 1497 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/
1498 1498
1499 tools/%: FORCE 1499 tools/%: FORCE
1500 $(Q)mkdir -p $(objtree)/tools 1500 $(Q)mkdir -p $(objtree)/tools
1501 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* 1501 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*
1502 1502
1503 # Single targets 1503 # Single targets
1504 # --------------------------------------------------------------------------- 1504 # ---------------------------------------------------------------------------
1505 # Single targets are compatible with: 1505 # Single targets are compatible with:
1506 # - build with mixed source and output 1506 # - build with mixed source and output
1507 # - build with separate output dir 'make O=...' 1507 # - build with separate output dir 'make O=...'
1508 # - external modules 1508 # - external modules
1509 # 1509 #
1510 # target-dir => where to store outputfile 1510 # target-dir => where to store outputfile
1511 # build-dir => directory in kernel source tree to use 1511 # build-dir => directory in kernel source tree to use
1512 1512
1513 ifeq ($(KBUILD_EXTMOD),) 1513 ifeq ($(KBUILD_EXTMOD),)
1514 build-dir = $(patsubst %/,%,$(dir $@)) 1514 build-dir = $(patsubst %/,%,$(dir $@))
1515 target-dir = $(dir $@) 1515 target-dir = $(dir $@)
1516 else 1516 else
1517 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1517 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1518 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1518 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1519 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1519 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1520 endif 1520 endif
1521 1521
1522 %.s: %.c prepare scripts FORCE 1522 %.s: %.c prepare scripts FORCE
1523 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1523 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1524 %.i: %.c prepare scripts FORCE 1524 %.i: %.c prepare scripts FORCE
1525 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1525 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1526 %.o: %.c prepare scripts FORCE 1526 %.o: %.c prepare scripts FORCE
1527 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1527 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1528 %.lst: %.c prepare scripts FORCE 1528 %.lst: %.c prepare scripts FORCE
1529 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1529 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1530 %.s: %.S prepare scripts FORCE 1530 %.s: %.S prepare scripts FORCE
1531 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1531 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1532 %.o: %.S prepare scripts FORCE 1532 %.o: %.S prepare scripts FORCE
1533 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1533 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1534 %.symtypes: %.c prepare scripts FORCE 1534 %.symtypes: %.c prepare scripts FORCE
1535 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1535 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1536 1536
1537 # Modules 1537 # Modules
1538 /: prepare scripts FORCE 1538 /: prepare scripts FORCE
1539 $(cmd_crmodverdir) 1539 $(cmd_crmodverdir)
1540 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1540 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1541 $(build)=$(build-dir) 1541 $(build)=$(build-dir)
1542 # Make sure the latest headers are built for Documentation 1542 # Make sure the latest headers are built for Documentation
1543 Documentation/: headers_install 1543 Documentation/: headers_install
1544 %/: prepare scripts FORCE 1544 %/: prepare scripts FORCE
1545 $(cmd_crmodverdir) 1545 $(cmd_crmodverdir)
1546 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1546 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1547 $(build)=$(build-dir) 1547 $(build)=$(build-dir)
1548 %.ko: prepare scripts FORCE 1548 %.ko: 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) $(@:.ko=.o) 1551 $(build)=$(build-dir) $(@:.ko=.o)
1552 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1552 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1553 1553
1554 # FIXME Should go into a make.lib or something 1554 # FIXME Should go into a make.lib or something
1555 # =========================================================================== 1555 # ===========================================================================
1556 1556
1557 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1557 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1558 cmd_rmdirs = rm -rf $(rm-dirs) 1558 cmd_rmdirs = rm -rf $(rm-dirs)
1559 1559
1560 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1560 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1561 cmd_rmfiles = rm -f $(rm-files) 1561 cmd_rmfiles = rm -f $(rm-files)
1562 1562
1563 # Run depmod only if we have System.map and depmod is executable 1563 # Run depmod only if we have System.map and depmod is executable
1564 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1564 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1565 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1565 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
1566 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 1566 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
1567 1567
1568 # Create temporary dir for module support files 1568 # Create temporary dir for module support files
1569 # clean it up only when building all modules 1569 # clean it up only when building all modules
1570 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1570 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1571 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1571 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1572 1572
1573 # read all saved command lines 1573 # read all saved command lines
1574 1574
1575 targets := $(wildcard $(sort $(targets))) 1575 targets := $(wildcard $(sort $(targets)))
1576 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1576 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1577 1577
1578 ifneq ($(cmd_files),) 1578 ifneq ($(cmd_files),)
1579 $(cmd_files): ; # Do not try to update included dependency files 1579 $(cmd_files): ; # Do not try to update included dependency files
1580 include $(cmd_files) 1580 include $(cmd_files)
1581 endif 1581 endif
1582 1582
1583 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1583 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1584 # Usage: 1584 # Usage:
1585 # $(Q)$(MAKE) $(clean)=dir 1585 # $(Q)$(MAKE) $(clean)=dir
1586 clean := -f $(srctree)/scripts/Makefile.clean obj 1586 clean := -f $(srctree)/scripts/Makefile.clean obj
1587 1587
1588 endif # skip-makefile 1588 endif # skip-makefile
1589 1589
1590 PHONY += FORCE 1590 PHONY += FORCE
1591 FORCE: 1591 FORCE:
1592 1592
1593 # Declare the contents of the .PHONY variable as phony. We keep that 1593 # Declare the contents of the .PHONY variable as phony. We keep that
1594 # information in a variable so we can use it in if_changed and friends. 1594 # information in a variable so we can use it in if_changed and friends.
1595 .PHONY: $(PHONY) 1595 .PHONY: $(PHONY)
1596 1596