Eric Lee / smarc-ti-linux-kernel

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Commit b7392d2247cfe6771f95d256374f1a8e6a6f48d6

Authored by Linus Torvalds
1 parent 2ea1e35ab1
Exists in ti-lsk-linux-4.1.y and in 10 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-02.00.01, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04

Linux 3.19-rc2

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

1 VERSION = 3 1 VERSION = 3
2 PATCHLEVEL = 19 2 PATCHLEVEL = 19
3 SUBLEVEL = 0 3 SUBLEVEL = 0
4 EXTRAVERSION = -rc1 4 EXTRAVERSION = -rc2
5 NAME = Diseased Newt 5 NAME = Diseased Newt
6 6
7 # *DOCUMENTATION* 7 # *DOCUMENTATION*
8 # To see a list of typical targets execute "make help" 8 # To see a list of typical targets execute "make help"
9 # More info can be located in ./README 9 # More info can be located in ./README
10 # Comments in this file are targeted only to the developer, do not 10 # Comments in this file are targeted only to the developer, do not
11 # expect to learn how to build the kernel reading this file. 11 # expect to learn how to build the kernel reading this file.
12 12
13 # Do not use make's built-in rules and variables 13 # Do not use make's built-in rules and variables
14 # (this increases performance and avoids hard-to-debug behaviour); 14 # (this increases performance and avoids hard-to-debug behaviour);
15 MAKEFLAGS += -rR 15 MAKEFLAGS += -rR
16 16
17 # Avoid funny character set dependencies 17 # Avoid funny character set dependencies
18 unexport LC_ALL 18 unexport LC_ALL
19 LC_COLLATE=C 19 LC_COLLATE=C
20 LC_NUMERIC=C 20 LC_NUMERIC=C
21 export LC_COLLATE LC_NUMERIC 21 export LC_COLLATE LC_NUMERIC
22 22
23 # Avoid interference with shell env settings 23 # Avoid interference with shell env settings
24 unexport GREP_OPTIONS 24 unexport GREP_OPTIONS
25 25
26 # We are using a recursive build, so we need to do a little thinking 26 # We are using a recursive build, so we need to do a little thinking
27 # to get the ordering right. 27 # to get the ordering right.
28 # 28 #
29 # Most importantly: sub-Makefiles should only ever modify files in 29 # Most importantly: sub-Makefiles should only ever modify files in
30 # their own directory. If in some directory we have a dependency on 30 # their own directory. If in some directory we have a dependency on
31 # a file in another dir (which doesn't happen often, but it's often 31 # a file in another dir (which doesn't happen often, but it's often
32 # unavoidable when linking the built-in.o targets which finally 32 # unavoidable when linking the built-in.o targets which finally
33 # turn into vmlinux), we will call a sub make in that other dir, and 33 # turn into vmlinux), we will call a sub make in that other dir, and
34 # after that we are sure that everything which is in that other dir 34 # after that we are sure that everything which is in that other dir
35 # is now up to date. 35 # is now up to date.
36 # 36 #
37 # The only cases where we need to modify files which have global 37 # The only cases where we need to modify files which have global
38 # effects are thus separated out and done before the recursive 38 # effects are thus separated out and done before the recursive
39 # descending is started. They are now explicitly listed as the 39 # descending is started. They are now explicitly listed as the
40 # prepare rule. 40 # prepare rule.
41 41
42 # Beautify output 42 # Beautify output
43 # --------------------------------------------------------------------------- 43 # ---------------------------------------------------------------------------
44 # 44 #
45 # Normally, we echo the whole command before executing it. By making 45 # Normally, we echo the whole command before executing it. By making
46 # that echo $($(quiet)$(cmd)), we now have the possibility to set 46 # that echo $($(quiet)$(cmd)), we now have the possibility to set
47 # $(quiet) to choose other forms of output instead, e.g. 47 # $(quiet) to choose other forms of output instead, e.g.
48 # 48 #
49 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 49 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
50 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 50 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
51 # 51 #
52 # If $(quiet) is empty, the whole command will be printed. 52 # If $(quiet) is empty, the whole command will be printed.
53 # If it is set to "quiet_", only the short version will be printed. 53 # If it is set to "quiet_", only the short version will be printed.
54 # If it is set to "silent_", nothing will be printed at all, since 54 # If it is set to "silent_", nothing will be printed at all, since
55 # the variable $(silent_cmd_cc_o_c) doesn't exist. 55 # the variable $(silent_cmd_cc_o_c) doesn't exist.
56 # 56 #
57 # A simple variant is to prefix commands with $(Q) - that's useful 57 # A simple variant is to prefix commands with $(Q) - that's useful
58 # for commands that shall be hidden in non-verbose mode. 58 # for commands that shall be hidden in non-verbose mode.
59 # 59 #
60 # $(Q)ln $@ :< 60 # $(Q)ln $@ :<
61 # 61 #
62 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 62 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
63 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 63 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
64 # 64 #
65 # To put more focus on warnings, be less verbose as default 65 # To put more focus on warnings, be less verbose as default
66 # Use 'make V=1' to see the full commands 66 # Use 'make V=1' to see the full commands
67 67
68 ifeq ("$(origin V)", "command line") 68 ifeq ("$(origin V)", "command line")
69 KBUILD_VERBOSE = $(V) 69 KBUILD_VERBOSE = $(V)
70 endif 70 endif
71 ifndef KBUILD_VERBOSE 71 ifndef KBUILD_VERBOSE
72 KBUILD_VERBOSE = 0 72 KBUILD_VERBOSE = 0
73 endif 73 endif
74 74
75 ifeq ($(KBUILD_VERBOSE),1) 75 ifeq ($(KBUILD_VERBOSE),1)
76 quiet = 76 quiet =
77 Q = 77 Q =
78 else 78 else
79 quiet=quiet_ 79 quiet=quiet_
80 Q = @ 80 Q = @
81 endif 81 endif
82 82
83 # If the user is running make -s (silent mode), suppress echoing of 83 # If the user is running make -s (silent mode), suppress echoing of
84 # commands 84 # commands
85 85
86 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 86 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
87 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 87 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
88 quiet=silent_ 88 quiet=silent_
89 endif 89 endif
90 else # make-3.8x 90 else # make-3.8x
91 ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 91 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
92 quiet=silent_ 92 quiet=silent_
93 endif 93 endif
94 endif 94 endif
95 95
96 export quiet Q KBUILD_VERBOSE 96 export quiet Q KBUILD_VERBOSE
97 97
98 # kbuild supports saving output files in a separate directory. 98 # kbuild supports saving output files in a separate directory.
99 # To locate output files in a separate directory two syntaxes are supported. 99 # To locate output files in a separate directory two syntaxes are supported.
100 # In both cases the working directory must be the root of the kernel src. 100 # In both cases the working directory must be the root of the kernel src.
101 # 1) O= 101 # 1) O=
102 # Use "make O=dir/to/store/output/files/" 102 # Use "make O=dir/to/store/output/files/"
103 # 103 #
104 # 2) Set KBUILD_OUTPUT 104 # 2) Set KBUILD_OUTPUT
105 # Set the environment variable KBUILD_OUTPUT to point to the directory 105 # Set the environment variable KBUILD_OUTPUT to point to the directory
106 # where the output files shall be placed. 106 # where the output files shall be placed.
107 # export KBUILD_OUTPUT=dir/to/store/output/files/ 107 # export KBUILD_OUTPUT=dir/to/store/output/files/
108 # make 108 # make
109 # 109 #
110 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 110 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
111 # variable. 111 # variable.
112 112
113 # KBUILD_SRC is set on invocation of make in OBJ directory 113 # KBUILD_SRC is set on invocation of make in OBJ directory
114 # KBUILD_SRC is not intended to be used by the regular user (for now) 114 # KBUILD_SRC is not intended to be used by the regular user (for now)
115 ifeq ($(KBUILD_SRC),) 115 ifeq ($(KBUILD_SRC),)
116 116
117 # OK, Make called in directory where kernel src resides 117 # OK, Make called in directory where kernel src resides
118 # Do we want to locate output files in a separate directory? 118 # Do we want to locate output files in a separate directory?
119 ifeq ("$(origin O)", "command line") 119 ifeq ("$(origin O)", "command line")
120 KBUILD_OUTPUT := $(O) 120 KBUILD_OUTPUT := $(O)
121 endif 121 endif
122 122
123 # That's our default target when none is given on the command line 123 # That's our default target when none is given on the command line
124 PHONY := _all 124 PHONY := _all
125 _all: 125 _all:
126 126
127 # Cancel implicit rules on top Makefile 127 # Cancel implicit rules on top Makefile
128 $(CURDIR)/Makefile Makefile: ; 128 $(CURDIR)/Makefile Makefile: ;
129 129
130 ifneq ($(KBUILD_OUTPUT),) 130 ifneq ($(KBUILD_OUTPUT),)
131 # Invoke a second make in the output directory, passing relevant variables 131 # Invoke a second make in the output directory, passing relevant variables
132 # check that the output directory actually exists 132 # check that the output directory actually exists
133 saved-output := $(KBUILD_OUTPUT) 133 saved-output := $(KBUILD_OUTPUT)
134 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 134 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
135 && /bin/pwd) 135 && /bin/pwd)
136 $(if $(KBUILD_OUTPUT),, \ 136 $(if $(KBUILD_OUTPUT),, \
137 $(error failed to create output directory "$(saved-output)")) 137 $(error failed to create output directory "$(saved-output)"))
138 138
139 PHONY += $(MAKECMDGOALS) sub-make 139 PHONY += $(MAKECMDGOALS) sub-make
140 140
141 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 141 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
142 @: 142 @:
143 143
144 sub-make: FORCE 144 sub-make: FORCE
145 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 145 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
146 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 146 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
147 147
148 # Leave processing to above invocation of make 148 # Leave processing to above invocation of make
149 skip-makefile := 1 149 skip-makefile := 1
150 endif # ifneq ($(KBUILD_OUTPUT),) 150 endif # ifneq ($(KBUILD_OUTPUT),)
151 endif # ifeq ($(KBUILD_SRC),) 151 endif # ifeq ($(KBUILD_SRC),)
152 152
153 # We process the rest of the Makefile if this is the final invocation of make 153 # We process the rest of the Makefile if this is the final invocation of make
154 ifeq ($(skip-makefile),) 154 ifeq ($(skip-makefile),)
155 155
156 # Do not print "Entering directory ...", 156 # Do not print "Entering directory ...",
157 # but we want to display it when entering to the output directory 157 # but we want to display it when entering to the output directory
158 # so that IDEs/editors are able to understand relative filenames. 158 # so that IDEs/editors are able to understand relative filenames.
159 MAKEFLAGS += --no-print-directory 159 MAKEFLAGS += --no-print-directory
160 160
161 # Call a source code checker (by default, "sparse") as part of the 161 # Call a source code checker (by default, "sparse") as part of the
162 # C compilation. 162 # C compilation.
163 # 163 #
164 # Use 'make C=1' to enable checking of only re-compiled files. 164 # Use 'make C=1' to enable checking of only re-compiled files.
165 # Use 'make C=2' to enable checking of *all* source files, regardless 165 # Use 'make C=2' to enable checking of *all* source files, regardless
166 # of whether they are re-compiled or not. 166 # of whether they are re-compiled or not.
167 # 167 #
168 # See the file "Documentation/sparse.txt" for more details, including 168 # See the file "Documentation/sparse.txt" for more details, including
169 # where to get the "sparse" utility. 169 # where to get the "sparse" utility.
170 170
171 ifeq ("$(origin C)", "command line") 171 ifeq ("$(origin C)", "command line")
172 KBUILD_CHECKSRC = $(C) 172 KBUILD_CHECKSRC = $(C)
173 endif 173 endif
174 ifndef KBUILD_CHECKSRC 174 ifndef KBUILD_CHECKSRC
175 KBUILD_CHECKSRC = 0 175 KBUILD_CHECKSRC = 0
176 endif 176 endif
177 177
178 # Use make M=dir to specify directory of external module to build 178 # Use make M=dir to specify directory of external module to build
179 # Old syntax make ... SUBDIRS=$PWD is still supported 179 # Old syntax make ... SUBDIRS=$PWD is still supported
180 # Setting the environment variable KBUILD_EXTMOD take precedence 180 # Setting the environment variable KBUILD_EXTMOD take precedence
181 ifdef SUBDIRS 181 ifdef SUBDIRS
182 KBUILD_EXTMOD ?= $(SUBDIRS) 182 KBUILD_EXTMOD ?= $(SUBDIRS)
183 endif 183 endif
184 184
185 ifeq ("$(origin M)", "command line") 185 ifeq ("$(origin M)", "command line")
186 KBUILD_EXTMOD := $(M) 186 KBUILD_EXTMOD := $(M)
187 endif 187 endif
188 188
189 # If building an external module we do not care about the all: rule 189 # If building an external module we do not care about the all: rule
190 # but instead _all depend on modules 190 # but instead _all depend on modules
191 PHONY += all 191 PHONY += all
192 ifeq ($(KBUILD_EXTMOD),) 192 ifeq ($(KBUILD_EXTMOD),)
193 _all: all 193 _all: all
194 else 194 else
195 _all: modules 195 _all: modules
196 endif 196 endif
197 197
198 ifeq ($(KBUILD_SRC),) 198 ifeq ($(KBUILD_SRC),)
199 # building in the source tree 199 # building in the source tree
200 srctree := . 200 srctree := .
201 else 201 else
202 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 202 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
203 # building in a subdirectory of the source tree 203 # building in a subdirectory of the source tree
204 srctree := .. 204 srctree := ..
205 else 205 else
206 srctree := $(KBUILD_SRC) 206 srctree := $(KBUILD_SRC)
207 endif 207 endif
208 endif 208 endif
209 objtree := . 209 objtree := .
210 src := $(srctree) 210 src := $(srctree)
211 obj := $(objtree) 211 obj := $(objtree)
212 212
213 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 213 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
214 214
215 export srctree objtree VPATH 215 export srctree objtree VPATH
216 216
217 217
218 # SUBARCH tells the usermode build what the underlying arch is. That is set 218 # SUBARCH tells the usermode build what the underlying arch is. That is set
219 # first, and if a usermode build is happening, the "ARCH=um" on the command 219 # first, and if a usermode build is happening, the "ARCH=um" on the command
220 # line overrides the setting of ARCH below. If a native build is happening, 220 # line overrides the setting of ARCH below. If a native build is happening,
221 # then ARCH is assigned, getting whatever value it gets normally, and 221 # then ARCH is assigned, getting whatever value it gets normally, and
222 # SUBARCH is subsequently ignored. 222 # SUBARCH is subsequently ignored.
223 223
224 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 224 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
225 -e s/sun4u/sparc64/ \ 225 -e s/sun4u/sparc64/ \
226 -e s/arm.*/arm/ -e s/sa110/arm/ \ 226 -e s/arm.*/arm/ -e s/sa110/arm/ \
227 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 227 -e s/s390x/s390/ -e s/parisc64/parisc/ \
228 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 228 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
229 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) 229 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
230 230
231 # Cross compiling and selecting different set of gcc/bin-utils 231 # Cross compiling and selecting different set of gcc/bin-utils
232 # --------------------------------------------------------------------------- 232 # ---------------------------------------------------------------------------
233 # 233 #
234 # When performing cross compilation for other architectures ARCH shall be set 234 # When performing cross compilation for other architectures ARCH shall be set
235 # to the target architecture. (See arch/* for the possibilities). 235 # to the target architecture. (See arch/* for the possibilities).
236 # ARCH can be set during invocation of make: 236 # ARCH can be set during invocation of make:
237 # make ARCH=ia64 237 # make ARCH=ia64
238 # Another way is to have ARCH set in the environment. 238 # Another way is to have ARCH set in the environment.
239 # The default ARCH is the host where make is executed. 239 # The default ARCH is the host where make is executed.
240 240
241 # CROSS_COMPILE specify the prefix used for all executables used 241 # CROSS_COMPILE specify the prefix used for all executables used
242 # during compilation. Only gcc and related bin-utils executables 242 # during compilation. Only gcc and related bin-utils executables
243 # are prefixed with $(CROSS_COMPILE). 243 # are prefixed with $(CROSS_COMPILE).
244 # CROSS_COMPILE can be set on the command line 244 # CROSS_COMPILE can be set on the command line
245 # make CROSS_COMPILE=ia64-linux- 245 # make CROSS_COMPILE=ia64-linux-
246 # Alternatively CROSS_COMPILE can be set in the environment. 246 # Alternatively CROSS_COMPILE can be set in the environment.
247 # A third alternative is to store a setting in .config so that plain 247 # A third alternative is to store a setting in .config so that plain
248 # "make" in the configured kernel build directory always uses that. 248 # "make" in the configured kernel build directory always uses that.
249 # Default value for CROSS_COMPILE is not to prefix executables 249 # Default value for CROSS_COMPILE is not to prefix executables
250 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 250 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
251 ARCH ?= $(SUBARCH) 251 ARCH ?= $(SUBARCH)
252 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 252 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
253 253
254 # Architecture as present in compile.h 254 # Architecture as present in compile.h
255 UTS_MACHINE := $(ARCH) 255 UTS_MACHINE := $(ARCH)
256 SRCARCH := $(ARCH) 256 SRCARCH := $(ARCH)
257 257
258 # Additional ARCH settings for x86 258 # Additional ARCH settings for x86
259 ifeq ($(ARCH),i386) 259 ifeq ($(ARCH),i386)
260 SRCARCH := x86 260 SRCARCH := x86
261 endif 261 endif
262 ifeq ($(ARCH),x86_64) 262 ifeq ($(ARCH),x86_64)
263 SRCARCH := x86 263 SRCARCH := x86
264 endif 264 endif
265 265
266 # Additional ARCH settings for sparc 266 # Additional ARCH settings for sparc
267 ifeq ($(ARCH),sparc32) 267 ifeq ($(ARCH),sparc32)
268 SRCARCH := sparc 268 SRCARCH := sparc
269 endif 269 endif
270 ifeq ($(ARCH),sparc64) 270 ifeq ($(ARCH),sparc64)
271 SRCARCH := sparc 271 SRCARCH := sparc
272 endif 272 endif
273 273
274 # Additional ARCH settings for sh 274 # Additional ARCH settings for sh
275 ifeq ($(ARCH),sh64) 275 ifeq ($(ARCH),sh64)
276 SRCARCH := sh 276 SRCARCH := sh
277 endif 277 endif
278 278
279 # Additional ARCH settings for tile 279 # Additional ARCH settings for tile
280 ifeq ($(ARCH),tilepro) 280 ifeq ($(ARCH),tilepro)
281 SRCARCH := tile 281 SRCARCH := tile
282 endif 282 endif
283 ifeq ($(ARCH),tilegx) 283 ifeq ($(ARCH),tilegx)
284 SRCARCH := tile 284 SRCARCH := tile
285 endif 285 endif
286 286
287 # Where to locate arch specific headers 287 # Where to locate arch specific headers
288 hdr-arch := $(SRCARCH) 288 hdr-arch := $(SRCARCH)
289 289
290 KCONFIG_CONFIG ?= .config 290 KCONFIG_CONFIG ?= .config
291 export KCONFIG_CONFIG 291 export KCONFIG_CONFIG
292 292
293 # SHELL used by kbuild 293 # SHELL used by kbuild
294 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 294 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
295 else if [ -x /bin/bash ]; then echo /bin/bash; \ 295 else if [ -x /bin/bash ]; then echo /bin/bash; \
296 else echo sh; fi ; fi) 296 else echo sh; fi ; fi)
297 297
298 HOSTCC = gcc 298 HOSTCC = gcc
299 HOSTCXX = g++ 299 HOSTCXX = g++
300 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 300 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89
301 HOSTCXXFLAGS = -O2 301 HOSTCXXFLAGS = -O2
302 302
303 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) 303 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
304 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ 304 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
305 -Wno-missing-field-initializers -fno-delete-null-pointer-checks 305 -Wno-missing-field-initializers -fno-delete-null-pointer-checks
306 endif 306 endif
307 307
308 # Decide whether to build built-in, modular, or both. 308 # Decide whether to build built-in, modular, or both.
309 # Normally, just do built-in. 309 # Normally, just do built-in.
310 310
311 KBUILD_MODULES := 311 KBUILD_MODULES :=
312 KBUILD_BUILTIN := 1 312 KBUILD_BUILTIN := 1
313 313
314 # If we have only "make modules", don't compile built-in objects. 314 # If we have only "make modules", don't compile built-in objects.
315 # When we're building modules with modversions, we need to consider 315 # When we're building modules with modversions, we need to consider
316 # the built-in objects during the descend as well, in order to 316 # the built-in objects during the descend as well, in order to
317 # make sure the checksums are up to date before we record them. 317 # make sure the checksums are up to date before we record them.
318 318
319 ifeq ($(MAKECMDGOALS),modules) 319 ifeq ($(MAKECMDGOALS),modules)
320 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 320 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
321 endif 321 endif
322 322
323 # If we have "make <whatever> modules", compile modules 323 # If we have "make <whatever> modules", compile modules
324 # in addition to whatever we do anyway. 324 # in addition to whatever we do anyway.
325 # Just "make" or "make all" shall build modules as well 325 # Just "make" or "make all" shall build modules as well
326 326
327 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 327 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
328 KBUILD_MODULES := 1 328 KBUILD_MODULES := 1
329 endif 329 endif
330 330
331 ifeq ($(MAKECMDGOALS),) 331 ifeq ($(MAKECMDGOALS),)
332 KBUILD_MODULES := 1 332 KBUILD_MODULES := 1
333 endif 333 endif
334 334
335 export KBUILD_MODULES KBUILD_BUILTIN 335 export KBUILD_MODULES KBUILD_BUILTIN
336 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 336 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
337 337
338 ifneq ($(CC),) 338 ifneq ($(CC),)
339 ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1) 339 ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
340 COMPILER := clang 340 COMPILER := clang
341 else 341 else
342 COMPILER := gcc 342 COMPILER := gcc
343 endif 343 endif
344 export COMPILER 344 export COMPILER
345 endif 345 endif
346 346
347 # Look for make include files relative to root of kernel src 347 # Look for make include files relative to root of kernel src
348 MAKEFLAGS += --include-dir=$(srctree) 348 MAKEFLAGS += --include-dir=$(srctree)
349 349
350 # We need some generic definitions (do not try to remake the file). 350 # We need some generic definitions (do not try to remake the file).
351 $(srctree)/scripts/Kbuild.include: ; 351 $(srctree)/scripts/Kbuild.include: ;
352 include $(srctree)/scripts/Kbuild.include 352 include $(srctree)/scripts/Kbuild.include
353 353
354 # Make variables (CC, etc...) 354 # Make variables (CC, etc...)
355 AS = $(CROSS_COMPILE)as 355 AS = $(CROSS_COMPILE)as
356 LD = $(CROSS_COMPILE)ld 356 LD = $(CROSS_COMPILE)ld
357 CC = $(CROSS_COMPILE)gcc 357 CC = $(CROSS_COMPILE)gcc
358 CPP = $(CC) -E 358 CPP = $(CC) -E
359 AR = $(CROSS_COMPILE)ar 359 AR = $(CROSS_COMPILE)ar
360 NM = $(CROSS_COMPILE)nm 360 NM = $(CROSS_COMPILE)nm
361 STRIP = $(CROSS_COMPILE)strip 361 STRIP = $(CROSS_COMPILE)strip
362 OBJCOPY = $(CROSS_COMPILE)objcopy 362 OBJCOPY = $(CROSS_COMPILE)objcopy
363 OBJDUMP = $(CROSS_COMPILE)objdump 363 OBJDUMP = $(CROSS_COMPILE)objdump
364 AWK = awk 364 AWK = awk
365 GENKSYMS = scripts/genksyms/genksyms 365 GENKSYMS = scripts/genksyms/genksyms
366 INSTALLKERNEL := installkernel 366 INSTALLKERNEL := installkernel
367 DEPMOD = /sbin/depmod 367 DEPMOD = /sbin/depmod
368 PERL = perl 368 PERL = perl
369 PYTHON = python 369 PYTHON = python
370 CHECK = sparse 370 CHECK = sparse
371 371
372 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 372 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
373 -Wbitwise -Wno-return-void $(CF) 373 -Wbitwise -Wno-return-void $(CF)
374 CFLAGS_MODULE = 374 CFLAGS_MODULE =
375 AFLAGS_MODULE = 375 AFLAGS_MODULE =
376 LDFLAGS_MODULE = 376 LDFLAGS_MODULE =
377 CFLAGS_KERNEL = 377 CFLAGS_KERNEL =
378 AFLAGS_KERNEL = 378 AFLAGS_KERNEL =
379 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage 379 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
380 380
381 381
382 # Use USERINCLUDE when you must reference the UAPI directories only. 382 # Use USERINCLUDE when you must reference the UAPI directories only.
383 USERINCLUDE := \ 383 USERINCLUDE := \
384 -I$(srctree)/arch/$(hdr-arch)/include/uapi \ 384 -I$(srctree)/arch/$(hdr-arch)/include/uapi \
385 -Iarch/$(hdr-arch)/include/generated/uapi \ 385 -Iarch/$(hdr-arch)/include/generated/uapi \
386 -I$(srctree)/include/uapi \ 386 -I$(srctree)/include/uapi \
387 -Iinclude/generated/uapi \ 387 -Iinclude/generated/uapi \
388 -include $(srctree)/include/linux/kconfig.h 388 -include $(srctree)/include/linux/kconfig.h
389 389
390 # Use LINUXINCLUDE when you must reference the include/ directory. 390 # Use LINUXINCLUDE when you must reference the include/ directory.
391 # Needed to be compatible with the O= option 391 # Needed to be compatible with the O= option
392 LINUXINCLUDE := \ 392 LINUXINCLUDE := \
393 -I$(srctree)/arch/$(hdr-arch)/include \ 393 -I$(srctree)/arch/$(hdr-arch)/include \
394 -Iarch/$(hdr-arch)/include/generated \ 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 -std=gnu89 405 -std=gnu89
406 406
407 KBUILD_AFLAGS_KERNEL := 407 KBUILD_AFLAGS_KERNEL :=
408 KBUILD_CFLAGS_KERNEL := 408 KBUILD_CFLAGS_KERNEL :=
409 KBUILD_AFLAGS := -D__ASSEMBLY__ 409 KBUILD_AFLAGS := -D__ASSEMBLY__
410 KBUILD_AFLAGS_MODULE := -DMODULE 410 KBUILD_AFLAGS_MODULE := -DMODULE
411 KBUILD_CFLAGS_MODULE := -DMODULE 411 KBUILD_CFLAGS_MODULE := -DMODULE
412 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 412 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
413 413
414 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 414 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
415 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 415 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
416 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 416 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
417 417
418 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 418 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
419 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 419 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
420 export CPP AR NM STRIP OBJCOPY OBJDUMP 420 export CPP AR NM STRIP OBJCOPY OBJDUMP
421 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE 421 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
422 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 422 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
423 423
424 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 424 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
425 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 425 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
426 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 426 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
427 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 427 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
428 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 428 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
429 export KBUILD_ARFLAGS 429 export KBUILD_ARFLAGS
430 430
431 # When compiling out-of-tree modules, put MODVERDIR in the module 431 # When compiling out-of-tree modules, put MODVERDIR in the module
432 # tree rather than in the kernel tree. The kernel tree might 432 # tree rather than in the kernel tree. The kernel tree might
433 # even be read-only. 433 # even be read-only.
434 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 434 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
435 435
436 # Files to ignore in find ... statements 436 # Files to ignore in find ... statements
437 437
438 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 438 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
439 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 439 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
440 -prune -o 440 -prune -o
441 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 441 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
442 --exclude CVS --exclude .pc --exclude .hg --exclude .git 442 --exclude CVS --exclude .pc --exclude .hg --exclude .git
443 443
444 # =========================================================================== 444 # ===========================================================================
445 # Rules shared between *config targets and build targets 445 # Rules shared between *config targets and build targets
446 446
447 # Basic helpers built in scripts/ 447 # Basic helpers built in scripts/
448 PHONY += scripts_basic 448 PHONY += scripts_basic
449 scripts_basic: 449 scripts_basic:
450 $(Q)$(MAKE) $(build)=scripts/basic 450 $(Q)$(MAKE) $(build)=scripts/basic
451 $(Q)rm -f .tmp_quiet_recordmcount 451 $(Q)rm -f .tmp_quiet_recordmcount
452 452
453 # To avoid any implicit rule to kick in, define an empty command. 453 # To avoid any implicit rule to kick in, define an empty command.
454 scripts/basic/%: scripts_basic ; 454 scripts/basic/%: scripts_basic ;
455 455
456 PHONY += outputmakefile 456 PHONY += outputmakefile
457 # outputmakefile generates a Makefile in the output directory, if using a 457 # outputmakefile generates a Makefile in the output directory, if using a
458 # separate output directory. This allows convenient use of make in the 458 # separate output directory. This allows convenient use of make in the
459 # output directory. 459 # output directory.
460 outputmakefile: 460 outputmakefile:
461 ifneq ($(KBUILD_SRC),) 461 ifneq ($(KBUILD_SRC),)
462 $(Q)ln -fsn $(srctree) source 462 $(Q)ln -fsn $(srctree) source
463 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 463 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
464 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 464 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
465 endif 465 endif
466 466
467 # Support for using generic headers in asm-generic 467 # Support for using generic headers in asm-generic
468 PHONY += asm-generic 468 PHONY += asm-generic
469 asm-generic: 469 asm-generic:
470 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 470 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
471 src=asm obj=arch/$(SRCARCH)/include/generated/asm 471 src=asm obj=arch/$(SRCARCH)/include/generated/asm
472 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 472 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
473 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm 473 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
474 474
475 # To make sure we do not include .config for any of the *config targets 475 # To make sure we do not include .config for any of the *config targets
476 # catch them early, and hand them over to scripts/kconfig/Makefile 476 # catch them early, and hand them over to scripts/kconfig/Makefile
477 # It is allowed to specify more targets when calling make, including 477 # It is allowed to specify more targets when calling make, including
478 # mixing *config targets and build targets. 478 # mixing *config targets and build targets.
479 # For example 'make oldconfig all'. 479 # For example 'make oldconfig all'.
480 # Detect when mixed targets is specified, and make a second invocation 480 # Detect when mixed targets is specified, and make a second invocation
481 # of make so .config is not included in this case either (for *config). 481 # of make so .config is not included in this case either (for *config).
482 482
483 version_h := include/generated/uapi/linux/version.h 483 version_h := include/generated/uapi/linux/version.h
484 old_version_h := include/linux/version.h 484 old_version_h := include/linux/version.h
485 485
486 no-dot-config-targets := clean mrproper distclean \ 486 no-dot-config-targets := clean mrproper distclean \
487 cscope gtags TAGS tags help% %docs check% coccicheck \ 487 cscope gtags TAGS tags help% %docs check% coccicheck \
488 $(version_h) headers_% archheaders archscripts \ 488 $(version_h) headers_% archheaders archscripts \
489 kernelversion %src-pkg 489 kernelversion %src-pkg
490 490
491 config-targets := 0 491 config-targets := 0
492 mixed-targets := 0 492 mixed-targets := 0
493 dot-config := 1 493 dot-config := 1
494 494
495 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 495 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
496 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 496 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
497 dot-config := 0 497 dot-config := 0
498 endif 498 endif
499 endif 499 endif
500 500
501 ifeq ($(KBUILD_EXTMOD),) 501 ifeq ($(KBUILD_EXTMOD),)
502 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 502 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
503 config-targets := 1 503 config-targets := 1
504 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 504 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
505 mixed-targets := 1 505 mixed-targets := 1
506 endif 506 endif
507 endif 507 endif
508 endif 508 endif
509 509
510 ifeq ($(mixed-targets),1) 510 ifeq ($(mixed-targets),1)
511 # =========================================================================== 511 # ===========================================================================
512 # We're called with mixed targets (*config and build targets). 512 # We're called with mixed targets (*config and build targets).
513 # Handle them one by one. 513 # Handle them one by one.
514 514
515 PHONY += $(MAKECMDGOALS) __build_one_by_one 515 PHONY += $(MAKECMDGOALS) __build_one_by_one
516 516
517 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 517 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
518 @: 518 @:
519 519
520 __build_one_by_one: 520 __build_one_by_one:
521 $(Q)set -e; \ 521 $(Q)set -e; \
522 for i in $(MAKECMDGOALS); do \ 522 for i in $(MAKECMDGOALS); do \
523 $(MAKE) -f $(srctree)/Makefile $$i; \ 523 $(MAKE) -f $(srctree)/Makefile $$i; \
524 done 524 done
525 525
526 else 526 else
527 ifeq ($(config-targets),1) 527 ifeq ($(config-targets),1)
528 # =========================================================================== 528 # ===========================================================================
529 # *config targets only - make sure prerequisites are updated, and descend 529 # *config targets only - make sure prerequisites are updated, and descend
530 # in scripts/kconfig to make the *config target 530 # in scripts/kconfig to make the *config target
531 531
532 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 532 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
533 # KBUILD_DEFCONFIG may point out an alternative default configuration 533 # KBUILD_DEFCONFIG may point out an alternative default configuration
534 # used for 'make defconfig' 534 # used for 'make defconfig'
535 include $(srctree)/arch/$(SRCARCH)/Makefile 535 include $(srctree)/arch/$(SRCARCH)/Makefile
536 export KBUILD_DEFCONFIG KBUILD_KCONFIG 536 export KBUILD_DEFCONFIG KBUILD_KCONFIG
537 537
538 config: scripts_basic outputmakefile FORCE 538 config: scripts_basic outputmakefile FORCE
539 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 539 $(Q)$(MAKE) $(build)=scripts/kconfig $@
540 540
541 %config: scripts_basic outputmakefile FORCE 541 %config: scripts_basic outputmakefile FORCE
542 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 542 $(Q)$(MAKE) $(build)=scripts/kconfig $@
543 543
544 else 544 else
545 # =========================================================================== 545 # ===========================================================================
546 # Build targets only - this includes vmlinux, arch specific targets, clean 546 # Build targets only - this includes vmlinux, arch specific targets, clean
547 # targets and others. In general all targets except *config targets. 547 # targets and others. In general all targets except *config targets.
548 548
549 ifeq ($(KBUILD_EXTMOD),) 549 ifeq ($(KBUILD_EXTMOD),)
550 # Additional helpers built in scripts/ 550 # Additional helpers built in scripts/
551 # Carefully list dependencies so we do not try to build scripts twice 551 # Carefully list dependencies so we do not try to build scripts twice
552 # in parallel 552 # in parallel
553 PHONY += scripts 553 PHONY += scripts
554 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ 554 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
555 asm-generic 555 asm-generic
556 $(Q)$(MAKE) $(build)=$(@) 556 $(Q)$(MAKE) $(build)=$(@)
557 557
558 # Objects we will link into vmlinux / subdirs we need to visit 558 # Objects we will link into vmlinux / subdirs we need to visit
559 init-y := init/ 559 init-y := init/
560 drivers-y := drivers/ sound/ firmware/ 560 drivers-y := drivers/ sound/ firmware/
561 net-y := net/ 561 net-y := net/
562 libs-y := lib/ 562 libs-y := lib/
563 core-y := usr/ 563 core-y := usr/
564 endif # KBUILD_EXTMOD 564 endif # KBUILD_EXTMOD
565 565
566 ifeq ($(dot-config),1) 566 ifeq ($(dot-config),1)
567 # Read in config 567 # Read in config
568 -include include/config/auto.conf 568 -include include/config/auto.conf
569 569
570 ifeq ($(KBUILD_EXTMOD),) 570 ifeq ($(KBUILD_EXTMOD),)
571 # Read in dependencies to all Kconfig* files, make sure to run 571 # Read in dependencies to all Kconfig* files, make sure to run
572 # oldconfig if changes are detected. 572 # oldconfig if changes are detected.
573 -include include/config/auto.conf.cmd 573 -include include/config/auto.conf.cmd
574 574
575 # To avoid any implicit rule to kick in, define an empty command 575 # To avoid any implicit rule to kick in, define an empty command
576 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 576 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
577 577
578 # If .config is newer than include/config/auto.conf, someone tinkered 578 # If .config is newer than include/config/auto.conf, someone tinkered
579 # with it and forgot to run make oldconfig. 579 # with it and forgot to run make oldconfig.
580 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 580 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
581 # we execute the config step to be sure to catch updated Kconfig files 581 # we execute the config step to be sure to catch updated Kconfig files
582 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 582 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
583 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 583 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
584 else 584 else
585 # external modules needs include/generated/autoconf.h and include/config/auto.conf 585 # external modules needs include/generated/autoconf.h and include/config/auto.conf
586 # but do not care if they are up-to-date. Use auto.conf to trigger the test 586 # but do not care if they are up-to-date. Use auto.conf to trigger the test
587 PHONY += include/config/auto.conf 587 PHONY += include/config/auto.conf
588 588
589 include/config/auto.conf: 589 include/config/auto.conf:
590 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 590 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
591 echo >&2; \ 591 echo >&2; \
592 echo >&2 " ERROR: Kernel configuration is invalid."; \ 592 echo >&2 " ERROR: Kernel configuration is invalid."; \
593 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 593 echo >&2 " include/generated/autoconf.h or $@ are missing.";\
594 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 594 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
595 echo >&2 ; \ 595 echo >&2 ; \
596 /bin/false) 596 /bin/false)
597 597
598 endif # KBUILD_EXTMOD 598 endif # KBUILD_EXTMOD
599 599
600 else 600 else
601 # Dummy target needed, because used as prerequisite 601 # Dummy target needed, because used as prerequisite
602 include/config/auto.conf: ; 602 include/config/auto.conf: ;
603 endif # $(dot-config) 603 endif # $(dot-config)
604 604
605 # The all: target is the default when no target is given on the 605 # The all: target is the default when no target is given on the
606 # command line. 606 # command line.
607 # This allow a user to issue only 'make' to build a kernel including modules 607 # This allow a user to issue only 'make' to build a kernel including modules
608 # Defaults to vmlinux, but the arch makefile usually adds further targets 608 # Defaults to vmlinux, but the arch makefile usually adds further targets
609 all: vmlinux 609 all: vmlinux
610 610
611 include $(srctree)/arch/$(SRCARCH)/Makefile 611 include $(srctree)/arch/$(SRCARCH)/Makefile
612 612
613 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 613 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
614 614
615 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 615 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
616 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) 616 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
617 else 617 else
618 KBUILD_CFLAGS += -O2 618 KBUILD_CFLAGS += -O2
619 endif 619 endif
620 620
621 # Tell gcc to never replace conditional load with a non-conditional one 621 # Tell gcc to never replace conditional load with a non-conditional one
622 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 622 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
623 623
624 ifdef CONFIG_READABLE_ASM 624 ifdef CONFIG_READABLE_ASM
625 # Disable optimizations that make assembler listings hard to read. 625 # Disable optimizations that make assembler listings hard to read.
626 # reorder blocks reorders the control in the function 626 # reorder blocks reorders the control in the function
627 # ipa clone creates specialized cloned functions 627 # ipa clone creates specialized cloned functions
628 # partial inlining inlines only parts of functions 628 # partial inlining inlines only parts of functions
629 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 629 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
630 $(call cc-option,-fno-ipa-cp-clone,) \ 630 $(call cc-option,-fno-ipa-cp-clone,) \
631 $(call cc-option,-fno-partial-inlining) 631 $(call cc-option,-fno-partial-inlining)
632 endif 632 endif
633 633
634 ifneq ($(CONFIG_FRAME_WARN),0) 634 ifneq ($(CONFIG_FRAME_WARN),0)
635 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 635 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
636 endif 636 endif
637 637
638 # Handle stack protector mode. 638 # Handle stack protector mode.
639 # 639 #
640 # Since kbuild can potentially perform two passes (first with the old 640 # Since kbuild can potentially perform two passes (first with the old
641 # .config values and then with updated .config values), we cannot error out 641 # .config values and then with updated .config values), we cannot error out
642 # if a desired compiler option is unsupported. If we were to error, kbuild 642 # if a desired compiler option is unsupported. If we were to error, kbuild
643 # could never get to the second pass and actually notice that we changed 643 # could never get to the second pass and actually notice that we changed
644 # the option to something that was supported. 644 # the option to something that was supported.
645 # 645 #
646 # Additionally, we don't want to fallback and/or silently change which compiler 646 # Additionally, we don't want to fallback and/or silently change which compiler
647 # flags will be used, since that leads to producing kernels with different 647 # flags will be used, since that leads to producing kernels with different
648 # security feature characteristics depending on the compiler used. ("But I 648 # security feature characteristics depending on the compiler used. ("But I
649 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") 649 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!")
650 # 650 #
651 # The middle ground is to warn here so that the failed option is obvious, but 651 # The middle ground is to warn here so that the failed option is obvious, but
652 # to let the build fail with bad compiler flags so that we can't produce a 652 # to let the build fail with bad compiler flags so that we can't produce a
653 # kernel when there is a CONFIG and compiler mismatch. 653 # kernel when there is a CONFIG and compiler mismatch.
654 # 654 #
655 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR 655 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
656 stackp-flag := -fstack-protector 656 stackp-flag := -fstack-protector
657 ifeq ($(call cc-option, $(stackp-flag)),) 657 ifeq ($(call cc-option, $(stackp-flag)),)
658 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ 658 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
659 -fstack-protector not supported by compiler) 659 -fstack-protector not supported by compiler)
660 endif 660 endif
661 else 661 else
662 ifdef CONFIG_CC_STACKPROTECTOR_STRONG 662 ifdef CONFIG_CC_STACKPROTECTOR_STRONG
663 stackp-flag := -fstack-protector-strong 663 stackp-flag := -fstack-protector-strong
664 ifeq ($(call cc-option, $(stackp-flag)),) 664 ifeq ($(call cc-option, $(stackp-flag)),)
665 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ 665 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
666 -fstack-protector-strong not supported by compiler) 666 -fstack-protector-strong not supported by compiler)
667 endif 667 endif
668 else 668 else
669 # Force off for distro compilers that enable stack protector by default. 669 # Force off for distro compilers that enable stack protector by default.
670 stackp-flag := $(call cc-option, -fno-stack-protector) 670 stackp-flag := $(call cc-option, -fno-stack-protector)
671 endif 671 endif
672 endif 672 endif
673 KBUILD_CFLAGS += $(stackp-flag) 673 KBUILD_CFLAGS += $(stackp-flag)
674 674
675 ifeq ($(COMPILER),clang) 675 ifeq ($(COMPILER),clang)
676 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 676 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
677 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) 677 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
678 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) 678 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
679 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 679 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
680 KBUILD_CFLAGS += $(call cc-disable-warning, gnu) 680 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
681 # Quiet clang warning: comparison of unsigned expression < 0 is always false 681 # Quiet clang warning: comparison of unsigned expression < 0 is always false
682 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) 682 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
683 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 683 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
684 # source of a reference will be _MergedGlobals and not on of the whitelisted names. 684 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
685 # See modpost pattern 2 685 # See modpost pattern 2
686 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) 686 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
687 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 687 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
688 else 688 else
689 689
690 # This warning generated too much noise in a regular build. 690 # This warning generated too much noise in a regular build.
691 # Use make W=1 to enable this warning (see scripts/Makefile.build) 691 # Use make W=1 to enable this warning (see scripts/Makefile.build)
692 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 692 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
693 endif 693 endif
694 694
695 ifdef CONFIG_FRAME_POINTER 695 ifdef CONFIG_FRAME_POINTER
696 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 696 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
697 else 697 else
698 # Some targets (ARM with Thumb2, for example), can't be built with frame 698 # Some targets (ARM with Thumb2, for example), can't be built with frame
699 # pointers. For those, we don't have FUNCTION_TRACER automatically 699 # pointers. For those, we don't have FUNCTION_TRACER automatically
700 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 700 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
701 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 701 # incompatible with -fomit-frame-pointer with current GCC, so we don't use
702 # -fomit-frame-pointer with FUNCTION_TRACER. 702 # -fomit-frame-pointer with FUNCTION_TRACER.
703 ifndef CONFIG_FUNCTION_TRACER 703 ifndef CONFIG_FUNCTION_TRACER
704 KBUILD_CFLAGS += -fomit-frame-pointer 704 KBUILD_CFLAGS += -fomit-frame-pointer
705 endif 705 endif
706 endif 706 endif
707 707
708 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 708 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
709 709
710 ifdef CONFIG_DEBUG_INFO 710 ifdef CONFIG_DEBUG_INFO
711 ifdef CONFIG_DEBUG_INFO_SPLIT 711 ifdef CONFIG_DEBUG_INFO_SPLIT
712 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 712 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g)
713 else 713 else
714 KBUILD_CFLAGS += -g 714 KBUILD_CFLAGS += -g
715 endif 715 endif
716 KBUILD_AFLAGS += -Wa,-gdwarf-2 716 KBUILD_AFLAGS += -Wa,-gdwarf-2
717 endif 717 endif
718 ifdef CONFIG_DEBUG_INFO_DWARF4 718 ifdef CONFIG_DEBUG_INFO_DWARF4
719 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 719 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,)
720 endif 720 endif
721 721
722 ifdef CONFIG_DEBUG_INFO_REDUCED 722 ifdef CONFIG_DEBUG_INFO_REDUCED
723 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 723 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
724 $(call cc-option,-fno-var-tracking) 724 $(call cc-option,-fno-var-tracking)
725 endif 725 endif
726 726
727 ifdef CONFIG_FUNCTION_TRACER 727 ifdef CONFIG_FUNCTION_TRACER
728 ifdef CONFIG_HAVE_FENTRY 728 ifdef CONFIG_HAVE_FENTRY
729 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 729 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
730 endif 730 endif
731 KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) 731 KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
732 KBUILD_AFLAGS += $(CC_USING_FENTRY) 732 KBUILD_AFLAGS += $(CC_USING_FENTRY)
733 ifdef CONFIG_DYNAMIC_FTRACE 733 ifdef CONFIG_DYNAMIC_FTRACE
734 ifdef CONFIG_HAVE_C_RECORDMCOUNT 734 ifdef CONFIG_HAVE_C_RECORDMCOUNT
735 BUILD_C_RECORDMCOUNT := y 735 BUILD_C_RECORDMCOUNT := y
736 export BUILD_C_RECORDMCOUNT 736 export BUILD_C_RECORDMCOUNT
737 endif 737 endif
738 endif 738 endif
739 endif 739 endif
740 740
741 # We trigger additional mismatches with less inlining 741 # We trigger additional mismatches with less inlining
742 ifdef CONFIG_DEBUG_SECTION_MISMATCH 742 ifdef CONFIG_DEBUG_SECTION_MISMATCH
743 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 743 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
744 endif 744 endif
745 745
746 # arch Makefile may override CC so keep this after arch Makefile is included 746 # arch Makefile may override CC so keep this after arch Makefile is included
747 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 747 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
748 CHECKFLAGS += $(NOSTDINC_FLAGS) 748 CHECKFLAGS += $(NOSTDINC_FLAGS)
749 749
750 # warn about C99 declaration after statement 750 # warn about C99 declaration after statement
751 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 751 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
752 752
753 # disable pointer signed / unsigned warnings in gcc 4.0 753 # disable pointer signed / unsigned warnings in gcc 4.0
754 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 754 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
755 755
756 # disable invalid "can't wrap" optimizations for signed / pointers 756 # disable invalid "can't wrap" optimizations for signed / pointers
757 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 757 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
758 758
759 # conserve stack if available 759 # conserve stack if available
760 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 760 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
761 761
762 # disallow errors like 'EXPORT_GPL(foo);' with missing header 762 # disallow errors like 'EXPORT_GPL(foo);' with missing header
763 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 763 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
764 764
765 # require functions to have arguments in prototypes, not empty 'int foo()' 765 # require functions to have arguments in prototypes, not empty 'int foo()'
766 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 766 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
767 767
768 # Prohibit date/time macros, which would make the build non-deterministic 768 # Prohibit date/time macros, which would make the build non-deterministic
769 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 769 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
770 770
771 # use the deterministic mode of AR if available 771 # use the deterministic mode of AR if available
772 KBUILD_ARFLAGS := $(call ar-option,D) 772 KBUILD_ARFLAGS := $(call ar-option,D)
773 773
774 # check for 'asm goto' 774 # check for 'asm goto'
775 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) 775 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
776 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 776 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
777 endif 777 endif
778 778
779 include $(srctree)/scripts/Makefile.extrawarn 779 include $(srctree)/scripts/Makefile.extrawarn
780 780
781 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 781 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
782 KBUILD_CPPFLAGS += $(KCPPFLAGS) 782 KBUILD_CPPFLAGS += $(KCPPFLAGS)
783 KBUILD_AFLAGS += $(KAFLAGS) 783 KBUILD_AFLAGS += $(KAFLAGS)
784 KBUILD_CFLAGS += $(KCFLAGS) 784 KBUILD_CFLAGS += $(KCFLAGS)
785 785
786 # Use --build-id when available. 786 # Use --build-id when available.
787 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 787 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
788 $(call cc-ldoption, -Wl$(comma)--build-id,)) 788 $(call cc-ldoption, -Wl$(comma)--build-id,))
789 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 789 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
790 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 790 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
791 791
792 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 792 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
793 LDFLAGS_vmlinux += $(call ld-option, -X,) 793 LDFLAGS_vmlinux += $(call ld-option, -X,)
794 endif 794 endif
795 795
796 # Default kernel image to build when no specific target is given. 796 # Default kernel image to build when no specific target is given.
797 # KBUILD_IMAGE may be overruled on the command line or 797 # KBUILD_IMAGE may be overruled on the command line or
798 # set in the environment 798 # set in the environment
799 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 799 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
800 # this default value 800 # this default value
801 export KBUILD_IMAGE ?= vmlinux 801 export KBUILD_IMAGE ?= vmlinux
802 802
803 # 803 #
804 # INSTALL_PATH specifies where to place the updated kernel and system map 804 # INSTALL_PATH specifies where to place the updated kernel and system map
805 # images. Default is /boot, but you can set it to other values 805 # images. Default is /boot, but you can set it to other values
806 export INSTALL_PATH ?= /boot 806 export INSTALL_PATH ?= /boot
807 807
808 # 808 #
809 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 809 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
810 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 810 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
811 # an argument if needed. Otherwise it defaults to the kernel install path 811 # an argument if needed. Otherwise it defaults to the kernel install path
812 # 812 #
813 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 813 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
814 814
815 # 815 #
816 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 816 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
817 # relocations required by build roots. This is not defined in the 817 # relocations required by build roots. This is not defined in the
818 # makefile but the argument can be passed to make if needed. 818 # makefile but the argument can be passed to make if needed.
819 # 819 #
820 820
821 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 821 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
822 export MODLIB 822 export MODLIB
823 823
824 # 824 #
825 # INSTALL_MOD_STRIP, if defined, will cause modules to be 825 # INSTALL_MOD_STRIP, if defined, will cause modules to be
826 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 826 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
827 # the default option --strip-debug will be used. Otherwise, 827 # the default option --strip-debug will be used. Otherwise,
828 # INSTALL_MOD_STRIP value will be used as the options to the strip command. 828 # INSTALL_MOD_STRIP value will be used as the options to the strip command.
829 829
830 ifdef INSTALL_MOD_STRIP 830 ifdef INSTALL_MOD_STRIP
831 ifeq ($(INSTALL_MOD_STRIP),1) 831 ifeq ($(INSTALL_MOD_STRIP),1)
832 mod_strip_cmd = $(STRIP) --strip-debug 832 mod_strip_cmd = $(STRIP) --strip-debug
833 else 833 else
834 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 834 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
835 endif # INSTALL_MOD_STRIP=1 835 endif # INSTALL_MOD_STRIP=1
836 else 836 else
837 mod_strip_cmd = true 837 mod_strip_cmd = true
838 endif # INSTALL_MOD_STRIP 838 endif # INSTALL_MOD_STRIP
839 export mod_strip_cmd 839 export mod_strip_cmd
840 840
841 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 841 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
842 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 842 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
843 # or CONFIG_MODULE_COMPRESS_XZ. 843 # or CONFIG_MODULE_COMPRESS_XZ.
844 844
845 mod_compress_cmd = true 845 mod_compress_cmd = true
846 ifdef CONFIG_MODULE_COMPRESS 846 ifdef CONFIG_MODULE_COMPRESS
847 ifdef CONFIG_MODULE_COMPRESS_GZIP 847 ifdef CONFIG_MODULE_COMPRESS_GZIP
848 mod_compress_cmd = gzip -n 848 mod_compress_cmd = gzip -n
849 endif # CONFIG_MODULE_COMPRESS_GZIP 849 endif # CONFIG_MODULE_COMPRESS_GZIP
850 ifdef CONFIG_MODULE_COMPRESS_XZ 850 ifdef CONFIG_MODULE_COMPRESS_XZ
851 mod_compress_cmd = xz 851 mod_compress_cmd = xz
852 endif # CONFIG_MODULE_COMPRESS_XZ 852 endif # CONFIG_MODULE_COMPRESS_XZ
853 endif # CONFIG_MODULE_COMPRESS 853 endif # CONFIG_MODULE_COMPRESS
854 export mod_compress_cmd 854 export mod_compress_cmd
855 855
856 # Select initial ramdisk compression format, default is gzip(1). 856 # Select initial ramdisk compression format, default is gzip(1).
857 # This shall be used by the dracut(8) tool while creating an initramfs image. 857 # This shall be used by the dracut(8) tool while creating an initramfs image.
858 # 858 #
859 INITRD_COMPRESS-y := gzip 859 INITRD_COMPRESS-y := gzip
860 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 860 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
861 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma 861 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
862 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz 862 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
863 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo 863 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
864 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 864 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
865 # do not export INITRD_COMPRESS, since we didn't actually 865 # do not export INITRD_COMPRESS, since we didn't actually
866 # choose a sane default compression above. 866 # choose a sane default compression above.
867 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 867 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
868 868
869 ifdef CONFIG_MODULE_SIG_ALL 869 ifdef CONFIG_MODULE_SIG_ALL
870 MODSECKEY = ./signing_key.priv 870 MODSECKEY = ./signing_key.priv
871 MODPUBKEY = ./signing_key.x509 871 MODPUBKEY = ./signing_key.x509
872 export MODPUBKEY 872 export MODPUBKEY
873 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) 873 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY)
874 else 874 else
875 mod_sign_cmd = true 875 mod_sign_cmd = true
876 endif 876 endif
877 export mod_sign_cmd 877 export mod_sign_cmd
878 878
879 879
880 ifeq ($(KBUILD_EXTMOD),) 880 ifeq ($(KBUILD_EXTMOD),)
881 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 881 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
882 882
883 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 883 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
884 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 884 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
885 $(net-y) $(net-m) $(libs-y) $(libs-m))) 885 $(net-y) $(net-m) $(libs-y) $(libs-m)))
886 886
887 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 887 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
888 $(init-) $(core-) $(drivers-) $(net-) $(libs-)))) 888 $(init-) $(core-) $(drivers-) $(net-) $(libs-))))
889 889
890 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 890 init-y := $(patsubst %/, %/built-in.o, $(init-y))
891 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 891 core-y := $(patsubst %/, %/built-in.o, $(core-y))
892 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 892 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
893 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 893 net-y := $(patsubst %/, %/built-in.o, $(net-y))
894 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 894 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
895 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 895 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
896 libs-y := $(libs-y1) $(libs-y2) 896 libs-y := $(libs-y1) $(libs-y2)
897 897
898 # Externally visible symbols (used by link-vmlinux.sh) 898 # Externally visible symbols (used by link-vmlinux.sh)
899 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) 899 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
900 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) 900 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
901 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 901 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
902 export LDFLAGS_vmlinux 902 export LDFLAGS_vmlinux
903 # used by scripts/pacmage/Makefile 903 # used by scripts/pacmage/Makefile
904 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) 904 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt)
905 905
906 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) 906 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
907 907
908 # Final link of vmlinux 908 # Final link of vmlinux
909 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) 909 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
910 quiet_cmd_link-vmlinux = LINK $@ 910 quiet_cmd_link-vmlinux = LINK $@
911 911
912 # Include targets which we want to 912 # Include targets which we want to
913 # execute if the rest of the kernel build went well. 913 # execute if the rest of the kernel build went well.
914 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE 914 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
915 ifdef CONFIG_HEADERS_CHECK 915 ifdef CONFIG_HEADERS_CHECK
916 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 916 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
917 endif 917 endif
918 ifdef CONFIG_SAMPLES 918 ifdef CONFIG_SAMPLES
919 $(Q)$(MAKE) $(build)=samples 919 $(Q)$(MAKE) $(build)=samples
920 endif 920 endif
921 ifdef CONFIG_BUILD_DOCSRC 921 ifdef CONFIG_BUILD_DOCSRC
922 $(Q)$(MAKE) $(build)=Documentation 922 $(Q)$(MAKE) $(build)=Documentation
923 endif 923 endif
924 +$(call if_changed,link-vmlinux) 924 +$(call if_changed,link-vmlinux)
925 925
926 # The actual objects are generated when descending, 926 # The actual objects are generated when descending,
927 # make sure no implicit rule kicks in 927 # make sure no implicit rule kicks in
928 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 928 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
929 929
930 # Handle descending into subdirectories listed in $(vmlinux-dirs) 930 # Handle descending into subdirectories listed in $(vmlinux-dirs)
931 # Preset locale variables to speed up the build process. Limit locale 931 # Preset locale variables to speed up the build process. Limit locale
932 # tweaks to this spot to avoid wrong language settings when running 932 # tweaks to this spot to avoid wrong language settings when running
933 # make menuconfig etc. 933 # make menuconfig etc.
934 # Error messages still appears in the original language 934 # Error messages still appears in the original language
935 935
936 PHONY += $(vmlinux-dirs) 936 PHONY += $(vmlinux-dirs)
937 $(vmlinux-dirs): prepare scripts 937 $(vmlinux-dirs): prepare scripts
938 $(Q)$(MAKE) $(build)=$@ 938 $(Q)$(MAKE) $(build)=$@
939 939
940 define filechk_kernel.release 940 define filechk_kernel.release
941 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 941 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
942 endef 942 endef
943 943
944 # Store (new) KERNELRELEASE string in include/config/kernel.release 944 # Store (new) KERNELRELEASE string in include/config/kernel.release
945 include/config/kernel.release: include/config/auto.conf FORCE 945 include/config/kernel.release: include/config/auto.conf FORCE
946 $(call filechk,kernel.release) 946 $(call filechk,kernel.release)
947 947
948 948
949 # Things we need to do before we recursively start building the kernel 949 # Things we need to do before we recursively start building the kernel
950 # or the modules are listed in "prepare". 950 # or the modules are listed in "prepare".
951 # A multi level approach is used. prepareN is processed before prepareN-1. 951 # A multi level approach is used. prepareN is processed before prepareN-1.
952 # archprepare is used in arch Makefiles and when processed asm symlink, 952 # archprepare is used in arch Makefiles and when processed asm symlink,
953 # version.h and scripts_basic is processed / created. 953 # version.h and scripts_basic is processed / created.
954 954
955 # Listed in dependency order 955 # Listed in dependency order
956 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 956 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
957 957
958 # prepare3 is used to check if we are building in a separate output directory, 958 # prepare3 is used to check if we are building in a separate output directory,
959 # and if so do: 959 # and if so do:
960 # 1) Check that make has not been executed in the kernel src $(srctree) 960 # 1) Check that make has not been executed in the kernel src $(srctree)
961 prepare3: include/config/kernel.release 961 prepare3: include/config/kernel.release
962 ifneq ($(KBUILD_SRC),) 962 ifneq ($(KBUILD_SRC),)
963 @$(kecho) ' Using $(srctree) as source for kernel' 963 @$(kecho) ' Using $(srctree) as source for kernel'
964 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 964 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
965 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 965 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
966 echo >&2 " in the '$(srctree)' directory.";\ 966 echo >&2 " in the '$(srctree)' directory.";\
967 /bin/false; \ 967 /bin/false; \
968 fi; 968 fi;
969 endif 969 endif
970 970
971 # prepare2 creates a makefile if using a separate output directory 971 # prepare2 creates a makefile if using a separate output directory
972 prepare2: prepare3 outputmakefile asm-generic 972 prepare2: prepare3 outputmakefile asm-generic
973 973
974 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ 974 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
975 include/config/auto.conf 975 include/config/auto.conf
976 $(cmd_crmodverdir) 976 $(cmd_crmodverdir)
977 977
978 archprepare: archheaders archscripts prepare1 scripts_basic 978 archprepare: archheaders archscripts prepare1 scripts_basic
979 979
980 prepare0: archprepare FORCE 980 prepare0: archprepare FORCE
981 $(Q)$(MAKE) $(build)=. 981 $(Q)$(MAKE) $(build)=.
982 982
983 # All the preparing.. 983 # All the preparing..
984 prepare: prepare0 984 prepare: prepare0
985 985
986 # Generate some files 986 # Generate some files
987 # --------------------------------------------------------------------------- 987 # ---------------------------------------------------------------------------
988 988
989 # KERNELRELEASE can change from a few different places, meaning version.h 989 # KERNELRELEASE can change from a few different places, meaning version.h
990 # needs to be updated, so this check is forced on all builds 990 # needs to be updated, so this check is forced on all builds
991 991
992 uts_len := 64 992 uts_len := 64
993 define filechk_utsrelease.h 993 define filechk_utsrelease.h
994 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 994 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
995 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 995 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
996 exit 1; \ 996 exit 1; \
997 fi; \ 997 fi; \
998 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 998 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
999 endef 999 endef
1000 1000
1001 define filechk_version.h 1001 define filechk_version.h
1002 (echo \#define LINUX_VERSION_CODE $(shell \ 1002 (echo \#define LINUX_VERSION_CODE $(shell \
1003 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1003 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
1004 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1004 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1005 endef 1005 endef
1006 1006
1007 $(version_h): $(srctree)/Makefile FORCE 1007 $(version_h): $(srctree)/Makefile FORCE
1008 $(call filechk,version.h) 1008 $(call filechk,version.h)
1009 $(Q)rm -f $(old_version_h) 1009 $(Q)rm -f $(old_version_h)
1010 1010
1011 include/generated/utsrelease.h: include/config/kernel.release FORCE 1011 include/generated/utsrelease.h: include/config/kernel.release FORCE
1012 $(call filechk,utsrelease.h) 1012 $(call filechk,utsrelease.h)
1013 1013
1014 PHONY += headerdep 1014 PHONY += headerdep
1015 headerdep: 1015 headerdep:
1016 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1016 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
1017 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1017 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
1018 1018
1019 # --------------------------------------------------------------------------- 1019 # ---------------------------------------------------------------------------
1020 1020
1021 PHONY += depend dep 1021 PHONY += depend dep
1022 depend dep: 1022 depend dep:
1023 @echo '*** Warning: make $@ is unnecessary now.' 1023 @echo '*** Warning: make $@ is unnecessary now.'
1024 1024
1025 # --------------------------------------------------------------------------- 1025 # ---------------------------------------------------------------------------
1026 # Firmware install 1026 # Firmware install
1027 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1027 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1028 export INSTALL_FW_PATH 1028 export INSTALL_FW_PATH
1029 1029
1030 PHONY += firmware_install 1030 PHONY += firmware_install
1031 firmware_install: FORCE 1031 firmware_install: FORCE
1032 @mkdir -p $(objtree)/firmware 1032 @mkdir -p $(objtree)/firmware
1033 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1033 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1034 1034
1035 # --------------------------------------------------------------------------- 1035 # ---------------------------------------------------------------------------
1036 # Kernel headers 1036 # Kernel headers
1037 1037
1038 #Default location for installed headers 1038 #Default location for installed headers
1039 export INSTALL_HDR_PATH = $(objtree)/usr 1039 export INSTALL_HDR_PATH = $(objtree)/usr
1040 1040
1041 # If we do an all arch process set dst to asm-$(hdr-arch) 1041 # If we do an all arch process set dst to asm-$(hdr-arch)
1042 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1042 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1043 1043
1044 PHONY += archheaders 1044 PHONY += archheaders
1045 archheaders: 1045 archheaders:
1046 1046
1047 PHONY += archscripts 1047 PHONY += archscripts
1048 archscripts: 1048 archscripts:
1049 1049
1050 PHONY += __headers 1050 PHONY += __headers
1051 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE 1051 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
1052 $(Q)$(MAKE) $(build)=scripts build_unifdef 1052 $(Q)$(MAKE) $(build)=scripts build_unifdef
1053 1053
1054 PHONY += headers_install_all 1054 PHONY += headers_install_all
1055 headers_install_all: 1055 headers_install_all:
1056 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1056 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1057 1057
1058 PHONY += headers_install 1058 PHONY += headers_install
1059 headers_install: __headers 1059 headers_install: __headers
1060 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ 1060 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
1061 $(error Headers not exportable for the $(SRCARCH) architecture)) 1061 $(error Headers not exportable for the $(SRCARCH) architecture))
1062 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1062 $(Q)$(MAKE) $(hdr-inst)=include/uapi
1063 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) 1063 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
1064 1064
1065 PHONY += headers_check_all 1065 PHONY += headers_check_all
1066 headers_check_all: headers_install_all 1066 headers_check_all: headers_install_all
1067 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1067 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1068 1068
1069 PHONY += headers_check 1069 PHONY += headers_check
1070 headers_check: headers_install 1070 headers_check: headers_install
1071 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 1071 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1072 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 1072 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
1073 1073
1074 # --------------------------------------------------------------------------- 1074 # ---------------------------------------------------------------------------
1075 # Kernel selftest 1075 # Kernel selftest
1076 1076
1077 PHONY += kselftest 1077 PHONY += kselftest
1078 kselftest: 1078 kselftest:
1079 $(Q)$(MAKE) -C tools/testing/selftests run_tests 1079 $(Q)$(MAKE) -C tools/testing/selftests run_tests
1080 1080
1081 # --------------------------------------------------------------------------- 1081 # ---------------------------------------------------------------------------
1082 # Modules 1082 # Modules
1083 1083
1084 ifdef CONFIG_MODULES 1084 ifdef CONFIG_MODULES
1085 1085
1086 # By default, build modules as well 1086 # By default, build modules as well
1087 1087
1088 all: modules 1088 all: modules
1089 1089
1090 # Build modules 1090 # Build modules
1091 # 1091 #
1092 # A module can be listed more than once in obj-m resulting in 1092 # A module can be listed more than once in obj-m resulting in
1093 # duplicate lines in modules.order files. Those are removed 1093 # duplicate lines in modules.order files. Those are removed
1094 # using awk while concatenating to the final file. 1094 # using awk while concatenating to the final file.
1095 1095
1096 PHONY += modules 1096 PHONY += modules
1097 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1097 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
1098 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1098 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1099 @$(kecho) ' Building modules, stage 2.'; 1099 @$(kecho) ' Building modules, stage 2.';
1100 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1100 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1101 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1101 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1102 1102
1103 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1103 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1104 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1104 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1105 1105
1106 %/modules.builtin: include/config/auto.conf 1106 %/modules.builtin: include/config/auto.conf
1107 $(Q)$(MAKE) $(modbuiltin)=$* 1107 $(Q)$(MAKE) $(modbuiltin)=$*
1108 1108
1109 1109
1110 # Target to prepare building external modules 1110 # Target to prepare building external modules
1111 PHONY += modules_prepare 1111 PHONY += modules_prepare
1112 modules_prepare: prepare scripts 1112 modules_prepare: prepare scripts
1113 1113
1114 # Target to install modules 1114 # Target to install modules
1115 PHONY += modules_install 1115 PHONY += modules_install
1116 modules_install: _modinst_ _modinst_post 1116 modules_install: _modinst_ _modinst_post
1117 1117
1118 PHONY += _modinst_ 1118 PHONY += _modinst_
1119 _modinst_: 1119 _modinst_:
1120 @rm -rf $(MODLIB)/kernel 1120 @rm -rf $(MODLIB)/kernel
1121 @rm -f $(MODLIB)/source 1121 @rm -f $(MODLIB)/source
1122 @mkdir -p $(MODLIB)/kernel 1122 @mkdir -p $(MODLIB)/kernel
1123 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source 1123 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
1124 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1124 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1125 rm -f $(MODLIB)/build ; \ 1125 rm -f $(MODLIB)/build ; \
1126 ln -s $(CURDIR) $(MODLIB)/build ; \ 1126 ln -s $(CURDIR) $(MODLIB)/build ; \
1127 fi 1127 fi
1128 @cp -f $(objtree)/modules.order $(MODLIB)/ 1128 @cp -f $(objtree)/modules.order $(MODLIB)/
1129 @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1129 @cp -f $(objtree)/modules.builtin $(MODLIB)/
1130 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1130 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1131 1131
1132 # This depmod is only for convenience to give the initial 1132 # This depmod is only for convenience to give the initial
1133 # boot a modules.dep even before / is mounted read-write. However the 1133 # boot a modules.dep even before / is mounted read-write. However the
1134 # boot script depmod is the master version. 1134 # boot script depmod is the master version.
1135 PHONY += _modinst_post 1135 PHONY += _modinst_post
1136 _modinst_post: _modinst_ 1136 _modinst_post: _modinst_
1137 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1137 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1138 $(call cmd,depmod) 1138 $(call cmd,depmod)
1139 1139
1140 ifeq ($(CONFIG_MODULE_SIG), y) 1140 ifeq ($(CONFIG_MODULE_SIG), y)
1141 PHONY += modules_sign 1141 PHONY += modules_sign
1142 modules_sign: 1142 modules_sign:
1143 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1143 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1144 endif 1144 endif
1145 1145
1146 else # CONFIG_MODULES 1146 else # CONFIG_MODULES
1147 1147
1148 # Modules not configured 1148 # Modules not configured
1149 # --------------------------------------------------------------------------- 1149 # ---------------------------------------------------------------------------
1150 1150
1151 modules modules_install: FORCE 1151 modules modules_install: FORCE
1152 @echo >&2 1152 @echo >&2
1153 @echo >&2 "The present kernel configuration has modules disabled." 1153 @echo >&2 "The present kernel configuration has modules disabled."
1154 @echo >&2 "Type 'make config' and enable loadable module support." 1154 @echo >&2 "Type 'make config' and enable loadable module support."
1155 @echo >&2 "Then build a kernel with module support enabled." 1155 @echo >&2 "Then build a kernel with module support enabled."
1156 @echo >&2 1156 @echo >&2
1157 @exit 1 1157 @exit 1
1158 1158
1159 endif # CONFIG_MODULES 1159 endif # CONFIG_MODULES
1160 1160
1161 ### 1161 ###
1162 # Cleaning is done on three levels. 1162 # Cleaning is done on three levels.
1163 # make clean Delete most generated files 1163 # make clean Delete most generated files
1164 # Leave enough to build external modules 1164 # Leave enough to build external modules
1165 # make mrproper Delete the current configuration, and all generated files 1165 # make mrproper Delete the current configuration, and all generated files
1166 # make distclean Remove editor backup files, patch leftover files and the like 1166 # make distclean Remove editor backup files, patch leftover files and the like
1167 1167
1168 # Directories & files removed with 'make clean' 1168 # Directories & files removed with 'make clean'
1169 CLEAN_DIRS += $(MODVERDIR) 1169 CLEAN_DIRS += $(MODVERDIR)
1170 1170
1171 # Directories & files removed with 'make mrproper' 1171 # Directories & files removed with 'make mrproper'
1172 MRPROPER_DIRS += include/config usr/include include/generated \ 1172 MRPROPER_DIRS += include/config usr/include include/generated \
1173 arch/*/include/generated .tmp_objdiff 1173 arch/*/include/generated .tmp_objdiff
1174 MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ 1174 MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
1175 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1175 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1176 signing_key.priv signing_key.x509 x509.genkey \ 1176 signing_key.priv signing_key.x509 x509.genkey \
1177 extra_certificates signing_key.x509.keyid \ 1177 extra_certificates signing_key.x509.keyid \
1178 signing_key.x509.signer 1178 signing_key.x509.signer
1179 1179
1180 # clean - Delete most, but leave enough to build external modules 1180 # clean - Delete most, but leave enough to build external modules
1181 # 1181 #
1182 clean: rm-dirs := $(CLEAN_DIRS) 1182 clean: rm-dirs := $(CLEAN_DIRS)
1183 clean: rm-files := $(CLEAN_FILES) 1183 clean: rm-files := $(CLEAN_FILES)
1184 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1184 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1185 1185
1186 PHONY += $(clean-dirs) clean archclean vmlinuxclean 1186 PHONY += $(clean-dirs) clean archclean vmlinuxclean
1187 $(clean-dirs): 1187 $(clean-dirs):
1188 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1188 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1189 1189
1190 vmlinuxclean: 1190 vmlinuxclean:
1191 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1191 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1192 1192
1193 clean: archclean vmlinuxclean 1193 clean: archclean vmlinuxclean
1194 1194
1195 # mrproper - Delete all generated files, including .config 1195 # mrproper - Delete all generated files, including .config
1196 # 1196 #
1197 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1197 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1198 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1198 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1199 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1199 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1200 1200
1201 PHONY += $(mrproper-dirs) mrproper archmrproper 1201 PHONY += $(mrproper-dirs) mrproper archmrproper
1202 $(mrproper-dirs): 1202 $(mrproper-dirs):
1203 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1203 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1204 1204
1205 mrproper: clean archmrproper $(mrproper-dirs) 1205 mrproper: clean archmrproper $(mrproper-dirs)
1206 $(call cmd,rmdirs) 1206 $(call cmd,rmdirs)
1207 $(call cmd,rmfiles) 1207 $(call cmd,rmfiles)
1208 1208
1209 # distclean 1209 # distclean
1210 # 1210 #
1211 PHONY += distclean 1211 PHONY += distclean
1212 1212
1213 distclean: mrproper 1213 distclean: mrproper
1214 @find $(srctree) $(RCS_FIND_IGNORE) \ 1214 @find $(srctree) $(RCS_FIND_IGNORE) \
1215 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1215 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1216 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1216 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1217 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ 1217 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
1218 -type f -print | xargs rm -f 1218 -type f -print | xargs rm -f
1219 1219
1220 1220
1221 # Packaging of the kernel to various formats 1221 # Packaging of the kernel to various formats
1222 # --------------------------------------------------------------------------- 1222 # ---------------------------------------------------------------------------
1223 # rpm target kept for backward compatibility 1223 # rpm target kept for backward compatibility
1224 package-dir := scripts/package 1224 package-dir := scripts/package
1225 1225
1226 %src-pkg: FORCE 1226 %src-pkg: FORCE
1227 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1227 $(Q)$(MAKE) $(build)=$(package-dir) $@
1228 %pkg: include/config/kernel.release FORCE 1228 %pkg: include/config/kernel.release FORCE
1229 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1229 $(Q)$(MAKE) $(build)=$(package-dir) $@
1230 rpm: include/config/kernel.release FORCE 1230 rpm: include/config/kernel.release FORCE
1231 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1231 $(Q)$(MAKE) $(build)=$(package-dir) $@
1232 1232
1233 1233
1234 # Brief documentation of the typical targets used 1234 # Brief documentation of the typical targets used
1235 # --------------------------------------------------------------------------- 1235 # ---------------------------------------------------------------------------
1236 1236
1237 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1237 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1238 boards := $(sort $(notdir $(boards))) 1238 boards := $(sort $(notdir $(boards)))
1239 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1239 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1240 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1240 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1241 1241
1242 help: 1242 help:
1243 @echo 'Cleaning targets:' 1243 @echo 'Cleaning targets:'
1244 @echo ' clean - Remove most generated files but keep the config and' 1244 @echo ' clean - Remove most generated files but keep the config and'
1245 @echo ' enough build support to build external modules' 1245 @echo ' enough build support to build external modules'
1246 @echo ' mrproper - Remove all generated files + config + various backup files' 1246 @echo ' mrproper - Remove all generated files + config + various backup files'
1247 @echo ' distclean - mrproper + remove editor backup and patch files' 1247 @echo ' distclean - mrproper + remove editor backup and patch files'
1248 @echo '' 1248 @echo ''
1249 @echo 'Configuration targets:' 1249 @echo 'Configuration targets:'
1250 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1250 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1251 @echo '' 1251 @echo ''
1252 @echo 'Other generic targets:' 1252 @echo 'Other generic targets:'
1253 @echo ' all - Build all targets marked with [*]' 1253 @echo ' all - Build all targets marked with [*]'
1254 @echo '* vmlinux - Build the bare kernel' 1254 @echo '* vmlinux - Build the bare kernel'
1255 @echo '* modules - Build all modules' 1255 @echo '* modules - Build all modules'
1256 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1256 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1257 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1257 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1258 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1258 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1259 @echo ' dir/ - Build all files in dir and below' 1259 @echo ' dir/ - Build all files in dir and below'
1260 @echo ' dir/file.[oisS] - Build specified target only' 1260 @echo ' dir/file.[oisS] - Build specified target only'
1261 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1261 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1262 @echo ' (requires a recent binutils and recent build (System.map))' 1262 @echo ' (requires a recent binutils and recent build (System.map))'
1263 @echo ' dir/file.ko - Build module including final link' 1263 @echo ' dir/file.ko - Build module including final link'
1264 @echo ' modules_prepare - Set up for building external modules' 1264 @echo ' modules_prepare - Set up for building external modules'
1265 @echo ' tags/TAGS - Generate tags file for editors' 1265 @echo ' tags/TAGS - Generate tags file for editors'
1266 @echo ' cscope - Generate cscope index' 1266 @echo ' cscope - Generate cscope index'
1267 @echo ' gtags - Generate GNU GLOBAL index' 1267 @echo ' gtags - Generate GNU GLOBAL index'
1268 @echo ' kernelrelease - Output the release version string (use with make -s)' 1268 @echo ' kernelrelease - Output the release version string (use with make -s)'
1269 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1269 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)'
1270 @echo ' image_name - Output the image name (use with make -s)' 1270 @echo ' image_name - Output the image name (use with make -s)'
1271 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1271 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1272 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1272 echo ' (default: $(INSTALL_HDR_PATH))'; \
1273 echo '' 1273 echo ''
1274 @echo 'Static analysers' 1274 @echo 'Static analysers'
1275 @echo ' checkstack - Generate a list of stack hogs' 1275 @echo ' checkstack - Generate a list of stack hogs'
1276 @echo ' namespacecheck - Name space analysis on compiled kernel' 1276 @echo ' namespacecheck - Name space analysis on compiled kernel'
1277 @echo ' versioncheck - Sanity check on version.h usage' 1277 @echo ' versioncheck - Sanity check on version.h usage'
1278 @echo ' includecheck - Check for duplicate included header files' 1278 @echo ' includecheck - Check for duplicate included header files'
1279 @echo ' export_report - List the usages of all exported symbols' 1279 @echo ' export_report - List the usages of all exported symbols'
1280 @echo ' headers_check - Sanity check on exported headers' 1280 @echo ' headers_check - Sanity check on exported headers'
1281 @echo ' headerdep - Detect inclusion cycles in headers' 1281 @echo ' headerdep - Detect inclusion cycles in headers'
1282 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1282 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1283 @echo '' 1283 @echo ''
1284 @echo 'Kernel selftest' 1284 @echo 'Kernel selftest'
1285 @echo ' kselftest - Build and run kernel selftest (run as root)' 1285 @echo ' kselftest - Build and run kernel selftest (run as root)'
1286 @echo ' Build, install, and boot kernel before' 1286 @echo ' Build, install, and boot kernel before'
1287 @echo ' running kselftest on it' 1287 @echo ' running kselftest on it'
1288 @echo '' 1288 @echo ''
1289 @echo 'Kernel packaging:' 1289 @echo 'Kernel packaging:'
1290 @$(MAKE) $(build)=$(package-dir) help 1290 @$(MAKE) $(build)=$(package-dir) help
1291 @echo '' 1291 @echo ''
1292 @echo 'Documentation targets:' 1292 @echo 'Documentation targets:'
1293 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1293 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1294 @echo '' 1294 @echo ''
1295 @echo 'Architecture specific targets ($(SRCARCH)):' 1295 @echo 'Architecture specific targets ($(SRCARCH)):'
1296 @$(if $(archhelp),$(archhelp),\ 1296 @$(if $(archhelp),$(archhelp),\
1297 echo ' No architecture specific help defined for $(SRCARCH)') 1297 echo ' No architecture specific help defined for $(SRCARCH)')
1298 @echo '' 1298 @echo ''
1299 @$(if $(boards), \ 1299 @$(if $(boards), \
1300 $(foreach b, $(boards), \ 1300 $(foreach b, $(boards), \
1301 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1301 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1302 echo '') 1302 echo '')
1303 @$(if $(board-dirs), \ 1303 @$(if $(board-dirs), \
1304 $(foreach b, $(board-dirs), \ 1304 $(foreach b, $(board-dirs), \
1305 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1305 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1306 printf " %-16s - Show all of the above\\n" help-boards; \ 1306 printf " %-16s - Show all of the above\\n" help-boards; \
1307 echo '') 1307 echo '')
1308 1308
1309 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1309 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1310 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1310 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1311 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1311 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1312 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1312 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1313 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1313 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1314 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1314 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1315 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1315 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1316 @echo ' 1: warnings which may be relevant and do not occur too often' 1316 @echo ' 1: warnings which may be relevant and do not occur too often'
1317 @echo ' 2: warnings which occur quite often but may still be relevant' 1317 @echo ' 2: warnings which occur quite often but may still be relevant'
1318 @echo ' 3: more obscure warnings, can most likely be ignored' 1318 @echo ' 3: more obscure warnings, can most likely be ignored'
1319 @echo ' Multiple levels can be combined with W=12 or W=123' 1319 @echo ' Multiple levels can be combined with W=12 or W=123'
1320 @echo '' 1320 @echo ''
1321 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1321 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1322 @echo 'For further info see the ./README file' 1322 @echo 'For further info see the ./README file'
1323 1323
1324 1324
1325 help-board-dirs := $(addprefix help-,$(board-dirs)) 1325 help-board-dirs := $(addprefix help-,$(board-dirs))
1326 1326
1327 help-boards: $(help-board-dirs) 1327 help-boards: $(help-board-dirs)
1328 1328
1329 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1329 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)))
1330 1330
1331 $(help-board-dirs): help-%: 1331 $(help-board-dirs): help-%:
1332 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1332 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1333 @$(if $(boards-per-dir), \ 1333 @$(if $(boards-per-dir), \
1334 $(foreach b, $(boards-per-dir), \ 1334 $(foreach b, $(boards-per-dir), \
1335 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1335 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1336 echo '') 1336 echo '')
1337 1337
1338 1338
1339 # Documentation targets 1339 # Documentation targets
1340 # --------------------------------------------------------------------------- 1340 # ---------------------------------------------------------------------------
1341 %docs: scripts_basic FORCE 1341 %docs: scripts_basic FORCE
1342 $(Q)$(MAKE) $(build)=scripts build_docproc 1342 $(Q)$(MAKE) $(build)=scripts build_docproc
1343 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1343 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1344 1344
1345 else # KBUILD_EXTMOD 1345 else # KBUILD_EXTMOD
1346 1346
1347 ### 1347 ###
1348 # External module support. 1348 # External module support.
1349 # When building external modules the kernel used as basis is considered 1349 # When building external modules the kernel used as basis is considered
1350 # read-only, and no consistency checks are made and the make 1350 # read-only, and no consistency checks are made and the make
1351 # system is not used on the basis kernel. If updates are required 1351 # system is not used on the basis kernel. If updates are required
1352 # in the basis kernel ordinary make commands (without M=...) must 1352 # in the basis kernel ordinary make commands (without M=...) must
1353 # be used. 1353 # be used.
1354 # 1354 #
1355 # The following are the only valid targets when building external 1355 # The following are the only valid targets when building external
1356 # modules. 1356 # modules.
1357 # make M=dir clean Delete all automatically generated files 1357 # make M=dir clean Delete all automatically generated files
1358 # make M=dir modules Make all modules in specified dir 1358 # make M=dir modules Make all modules in specified dir
1359 # make M=dir Same as 'make M=dir modules' 1359 # make M=dir Same as 'make M=dir modules'
1360 # make M=dir modules_install 1360 # make M=dir modules_install
1361 # Install the modules built in the module directory 1361 # Install the modules built in the module directory
1362 # Assumes install directory is already created 1362 # Assumes install directory is already created
1363 1363
1364 # We are always building modules 1364 # We are always building modules
1365 KBUILD_MODULES := 1 1365 KBUILD_MODULES := 1
1366 PHONY += crmodverdir 1366 PHONY += crmodverdir
1367 crmodverdir: 1367 crmodverdir:
1368 $(cmd_crmodverdir) 1368 $(cmd_crmodverdir)
1369 1369
1370 PHONY += $(objtree)/Module.symvers 1370 PHONY += $(objtree)/Module.symvers
1371 $(objtree)/Module.symvers: 1371 $(objtree)/Module.symvers:
1372 @test -e $(objtree)/Module.symvers || ( \ 1372 @test -e $(objtree)/Module.symvers || ( \
1373 echo; \ 1373 echo; \
1374 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1374 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1375 echo " is missing; modules will have no dependencies and modversions."; \ 1375 echo " is missing; modules will have no dependencies and modversions."; \
1376 echo ) 1376 echo )
1377 1377
1378 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1378 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1379 PHONY += $(module-dirs) modules 1379 PHONY += $(module-dirs) modules
1380 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1380 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1381 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1381 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1382 1382
1383 modules: $(module-dirs) 1383 modules: $(module-dirs)
1384 @$(kecho) ' Building modules, stage 2.'; 1384 @$(kecho) ' Building modules, stage 2.';
1385 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1385 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1386 1386
1387 PHONY += modules_install 1387 PHONY += modules_install
1388 modules_install: _emodinst_ _emodinst_post 1388 modules_install: _emodinst_ _emodinst_post
1389 1389
1390 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1390 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1391 PHONY += _emodinst_ 1391 PHONY += _emodinst_
1392 _emodinst_: 1392 _emodinst_:
1393 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1393 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1394 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1394 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1395 1395
1396 PHONY += _emodinst_post 1396 PHONY += _emodinst_post
1397 _emodinst_post: _emodinst_ 1397 _emodinst_post: _emodinst_
1398 $(call cmd,depmod) 1398 $(call cmd,depmod)
1399 1399
1400 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1400 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1401 1401
1402 PHONY += $(clean-dirs) clean 1402 PHONY += $(clean-dirs) clean
1403 $(clean-dirs): 1403 $(clean-dirs):
1404 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1404 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1405 1405
1406 clean: rm-dirs := $(MODVERDIR) 1406 clean: rm-dirs := $(MODVERDIR)
1407 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1407 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1408 1408
1409 help: 1409 help:
1410 @echo ' Building external modules.' 1410 @echo ' Building external modules.'
1411 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1411 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1412 @echo '' 1412 @echo ''
1413 @echo ' modules - default target, build the module(s)' 1413 @echo ' modules - default target, build the module(s)'
1414 @echo ' modules_install - install the module' 1414 @echo ' modules_install - install the module'
1415 @echo ' clean - remove generated files in module directory only' 1415 @echo ' clean - remove generated files in module directory only'
1416 @echo '' 1416 @echo ''
1417 1417
1418 # Dummies... 1418 # Dummies...
1419 PHONY += prepare scripts 1419 PHONY += prepare scripts
1420 prepare: ; 1420 prepare: ;
1421 scripts: ; 1421 scripts: ;
1422 endif # KBUILD_EXTMOD 1422 endif # KBUILD_EXTMOD
1423 1423
1424 clean: $(clean-dirs) 1424 clean: $(clean-dirs)
1425 $(call cmd,rmdirs) 1425 $(call cmd,rmdirs)
1426 $(call cmd,rmfiles) 1426 $(call cmd,rmfiles)
1427 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1427 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1428 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1428 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1429 -o -name '*.ko.*' \ 1429 -o -name '*.ko.*' \
1430 -o -name '*.dwo' \ 1430 -o -name '*.dwo' \
1431 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1431 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1432 -o -name '*.symtypes' -o -name 'modules.order' \ 1432 -o -name '*.symtypes' -o -name 'modules.order' \
1433 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1433 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1434 -o -name '*.gcno' \) -type f -print | xargs rm -f 1434 -o -name '*.gcno' \) -type f -print | xargs rm -f
1435 1435
1436 # Generate tags for editors 1436 # Generate tags for editors
1437 # --------------------------------------------------------------------------- 1437 # ---------------------------------------------------------------------------
1438 quiet_cmd_tags = GEN $@ 1438 quiet_cmd_tags = GEN $@
1439 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1439 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1440 1440
1441 tags TAGS cscope gtags: FORCE 1441 tags TAGS cscope gtags: FORCE
1442 $(call cmd,tags) 1442 $(call cmd,tags)
1443 1443
1444 # Scripts to check various things for consistency 1444 # Scripts to check various things for consistency
1445 # --------------------------------------------------------------------------- 1445 # ---------------------------------------------------------------------------
1446 1446
1447 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 1447 PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1448 1448
1449 includecheck: 1449 includecheck:
1450 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1450 find $(srctree)/* $(RCS_FIND_IGNORE) \
1451 -name '*.[hcS]' -type f -print | sort \ 1451 -name '*.[hcS]' -type f -print | sort \
1452 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1452 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1453 1453
1454 versioncheck: 1454 versioncheck:
1455 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1455 find $(srctree)/* $(RCS_FIND_IGNORE) \
1456 -name '*.[hcS]' -type f -print | sort \ 1456 -name '*.[hcS]' -type f -print | sort \
1457 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1457 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1458 1458
1459 coccicheck: 1459 coccicheck:
1460 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1460 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1461 1461
1462 namespacecheck: 1462 namespacecheck:
1463 $(PERL) $(srctree)/scripts/namespace.pl 1463 $(PERL) $(srctree)/scripts/namespace.pl
1464 1464
1465 export_report: 1465 export_report:
1466 $(PERL) $(srctree)/scripts/export_report.pl 1466 $(PERL) $(srctree)/scripts/export_report.pl
1467 1467
1468 endif #ifeq ($(config-targets),1) 1468 endif #ifeq ($(config-targets),1)
1469 endif #ifeq ($(mixed-targets),1) 1469 endif #ifeq ($(mixed-targets),1)
1470 1470
1471 PHONY += checkstack kernelrelease kernelversion image_name 1471 PHONY += checkstack kernelrelease kernelversion image_name
1472 1472
1473 # UML needs a little special treatment here. It wants to use the host 1473 # UML needs a little special treatment here. It wants to use the host
1474 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1474 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1475 # else wants $(ARCH), including people doing cross-builds, which means 1475 # else wants $(ARCH), including people doing cross-builds, which means
1476 # that $(SUBARCH) doesn't work here. 1476 # that $(SUBARCH) doesn't work here.
1477 ifeq ($(ARCH), um) 1477 ifeq ($(ARCH), um)
1478 CHECKSTACK_ARCH := $(SUBARCH) 1478 CHECKSTACK_ARCH := $(SUBARCH)
1479 else 1479 else
1480 CHECKSTACK_ARCH := $(ARCH) 1480 CHECKSTACK_ARCH := $(ARCH)
1481 endif 1481 endif
1482 checkstack: 1482 checkstack:
1483 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1483 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1484 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1484 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1485 1485
1486 kernelrelease: 1486 kernelrelease:
1487 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1487 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1488 1488
1489 kernelversion: 1489 kernelversion:
1490 @echo $(KERNELVERSION) 1490 @echo $(KERNELVERSION)
1491 1491
1492 image_name: 1492 image_name:
1493 @echo $(KBUILD_IMAGE) 1493 @echo $(KBUILD_IMAGE)
1494 1494
1495 # Clear a bunch of variables before executing the submake 1495 # Clear a bunch of variables before executing the submake
1496 tools/: FORCE 1496 tools/: FORCE
1497 $(Q)mkdir -p $(objtree)/tools 1497 $(Q)mkdir -p $(objtree)/tools
1498 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ 1498 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/
1499 1499
1500 tools/%: FORCE 1500 tools/%: FORCE
1501 $(Q)mkdir -p $(objtree)/tools 1501 $(Q)mkdir -p $(objtree)/tools
1502 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* 1502 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*
1503 1503
1504 # Single targets 1504 # Single targets
1505 # --------------------------------------------------------------------------- 1505 # ---------------------------------------------------------------------------
1506 # Single targets are compatible with: 1506 # Single targets are compatible with:
1507 # - build with mixed source and output 1507 # - build with mixed source and output
1508 # - build with separate output dir 'make O=...' 1508 # - build with separate output dir 'make O=...'
1509 # - external modules 1509 # - external modules
1510 # 1510 #
1511 # target-dir => where to store outputfile 1511 # target-dir => where to store outputfile
1512 # build-dir => directory in kernel source tree to use 1512 # build-dir => directory in kernel source tree to use
1513 1513
1514 ifeq ($(KBUILD_EXTMOD),) 1514 ifeq ($(KBUILD_EXTMOD),)
1515 build-dir = $(patsubst %/,%,$(dir $@)) 1515 build-dir = $(patsubst %/,%,$(dir $@))
1516 target-dir = $(dir $@) 1516 target-dir = $(dir $@)
1517 else 1517 else
1518 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1518 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1519 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1519 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1520 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1520 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1521 endif 1521 endif
1522 1522
1523 %.s: %.c prepare scripts FORCE 1523 %.s: %.c prepare scripts FORCE
1524 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1524 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1525 %.i: %.c prepare scripts FORCE 1525 %.i: %.c prepare scripts FORCE
1526 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1526 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1527 %.o: %.c prepare scripts FORCE 1527 %.o: %.c prepare scripts FORCE
1528 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1528 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1529 %.lst: %.c prepare scripts FORCE 1529 %.lst: %.c prepare scripts FORCE
1530 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1530 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1531 %.s: %.S prepare scripts FORCE 1531 %.s: %.S prepare scripts FORCE
1532 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1532 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1533 %.o: %.S prepare scripts FORCE 1533 %.o: %.S prepare scripts FORCE
1534 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1534 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1535 %.symtypes: %.c prepare scripts FORCE 1535 %.symtypes: %.c prepare scripts FORCE
1536 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1536 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1537 1537
1538 # Modules 1538 # Modules
1539 /: prepare scripts FORCE 1539 /: prepare scripts FORCE
1540 $(cmd_crmodverdir) 1540 $(cmd_crmodverdir)
1541 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1541 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1542 $(build)=$(build-dir) 1542 $(build)=$(build-dir)
1543 # Make sure the latest headers are built for Documentation 1543 # Make sure the latest headers are built for Documentation
1544 Documentation/: headers_install 1544 Documentation/: headers_install
1545 %/: prepare scripts FORCE 1545 %/: prepare scripts FORCE
1546 $(cmd_crmodverdir) 1546 $(cmd_crmodverdir)
1547 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1547 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1548 $(build)=$(build-dir) 1548 $(build)=$(build-dir)
1549 %.ko: prepare scripts FORCE 1549 %.ko: prepare scripts FORCE
1550 $(cmd_crmodverdir) 1550 $(cmd_crmodverdir)
1551 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1551 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1552 $(build)=$(build-dir) $(@:.ko=.o) 1552 $(build)=$(build-dir) $(@:.ko=.o)
1553 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1553 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1554 1554
1555 # FIXME Should go into a make.lib or something 1555 # FIXME Should go into a make.lib or something
1556 # =========================================================================== 1556 # ===========================================================================
1557 1557
1558 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1558 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1559 cmd_rmdirs = rm -rf $(rm-dirs) 1559 cmd_rmdirs = rm -rf $(rm-dirs)
1560 1560
1561 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1561 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1562 cmd_rmfiles = rm -f $(rm-files) 1562 cmd_rmfiles = rm -f $(rm-files)
1563 1563
1564 # Run depmod only if we have System.map and depmod is executable 1564 # Run depmod only if we have System.map and depmod is executable
1565 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1565 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1566 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1566 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
1567 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 1567 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
1568 1568
1569 # Create temporary dir for module support files 1569 # Create temporary dir for module support files
1570 # clean it up only when building all modules 1570 # clean it up only when building all modules
1571 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1571 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1572 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1572 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1573 1573
1574 # read all saved command lines 1574 # read all saved command lines
1575 1575
1576 targets := $(wildcard $(sort $(targets))) 1576 targets := $(wildcard $(sort $(targets)))
1577 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1577 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1578 1578
1579 ifneq ($(cmd_files),) 1579 ifneq ($(cmd_files),)
1580 $(cmd_files): ; # Do not try to update included dependency files 1580 $(cmd_files): ; # Do not try to update included dependency files
1581 include $(cmd_files) 1581 include $(cmd_files)
1582 endif 1582 endif
1583 1583
1584 endif # skip-makefile 1584 endif # skip-makefile
1585 1585
1586 PHONY += FORCE 1586 PHONY += FORCE
1587 FORCE: 1587 FORCE:
1588 1588
1589 # Declare the contents of the .PHONY variable as phony. We keep that 1589 # Declare the contents of the .PHONY variable as phony. We keep that
1590 # information in a variable so we can use it in if_changed and friends. 1590 # information in a variable so we can use it in if_changed and friends.
1591 .PHONY: $(PHONY) 1591 .PHONY: $(PHONY)
1592 1592