Eric Lee / linux-smarc-t335x-v3.2

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Commit 4be3bd7849165e7efa6b0b35a23d6a3598d97465

Authored by Linus Torvalds
1 parent b600ffaebc
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

Linux 2.6.31-rc4

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

1 VERSION = 2 1 VERSION = 2
2 PATCHLEVEL = 6 2 PATCHLEVEL = 6
3 SUBLEVEL = 31 3 SUBLEVEL = 31
4 EXTRAVERSION = -rc3 4 EXTRAVERSION = -rc4
5 NAME = Man-Eating Seals of Antiquity 5 NAME = Man-Eating Seals of Antiquity
6 6
7 # *DOCUMENTATION* 7 # *DOCUMENTATION*
8 # To see a list of typical targets execute "make help" 8 # To see a list of typical targets execute "make help"
9 # More info can be located in ./README 9 # More info can be located in ./README
10 # Comments in this file are targeted only to the developer, do not 10 # Comments in this file are targeted only to the developer, do not
11 # expect to learn how to build the kernel reading this file. 11 # expect to learn how to build the kernel reading this file.
12 12
13 # Do not: 13 # Do not:
14 # o use make's built-in rules and variables 14 # o use make's built-in rules and variables
15 # (this increases performance and avoids hard-to-debug behaviour); 15 # (this increases performance and avoids hard-to-debug behaviour);
16 # o print "Entering directory ..."; 16 # o print "Entering directory ...";
17 MAKEFLAGS += -rR --no-print-directory 17 MAKEFLAGS += -rR --no-print-directory
18 18
19 # We are using a recursive build, so we need to do a little thinking 19 # We are using a recursive build, so we need to do a little thinking
20 # to get the ordering right. 20 # to get the ordering right.
21 # 21 #
22 # Most importantly: sub-Makefiles should only ever modify files in 22 # Most importantly: sub-Makefiles should only ever modify files in
23 # their own directory. If in some directory we have a dependency on 23 # their own directory. If in some directory we have a dependency on
24 # a file in another dir (which doesn't happen often, but it's often 24 # a file in another dir (which doesn't happen often, but it's often
25 # unavoidable when linking the built-in.o targets which finally 25 # unavoidable when linking the built-in.o targets which finally
26 # turn into vmlinux), we will call a sub make in that other dir, and 26 # turn into vmlinux), we will call a sub make in that other dir, and
27 # after that we are sure that everything which is in that other dir 27 # after that we are sure that everything which is in that other dir
28 # is now up to date. 28 # is now up to date.
29 # 29 #
30 # The only cases where we need to modify files which have global 30 # The only cases where we need to modify files which have global
31 # effects are thus separated out and done before the recursive 31 # effects are thus separated out and done before the recursive
32 # descending is started. They are now explicitly listed as the 32 # descending is started. They are now explicitly listed as the
33 # prepare rule. 33 # prepare rule.
34 34
35 # To put more focus on warnings, be less verbose as default 35 # To put more focus on warnings, be less verbose as default
36 # Use 'make V=1' to see the full commands 36 # Use 'make V=1' to see the full commands
37 37
38 ifeq ("$(origin V)", "command line") 38 ifeq ("$(origin V)", "command line")
39 KBUILD_VERBOSE = $(V) 39 KBUILD_VERBOSE = $(V)
40 endif 40 endif
41 ifndef KBUILD_VERBOSE 41 ifndef KBUILD_VERBOSE
42 KBUILD_VERBOSE = 0 42 KBUILD_VERBOSE = 0
43 endif 43 endif
44 44
45 # Call a source code checker (by default, "sparse") as part of the 45 # Call a source code checker (by default, "sparse") as part of the
46 # C compilation. 46 # C compilation.
47 # 47 #
48 # Use 'make C=1' to enable checking of only re-compiled files. 48 # Use 'make C=1' to enable checking of only re-compiled files.
49 # Use 'make C=2' to enable checking of *all* source files, regardless 49 # Use 'make C=2' to enable checking of *all* source files, regardless
50 # of whether they are re-compiled or not. 50 # of whether they are re-compiled or not.
51 # 51 #
52 # See the file "Documentation/sparse.txt" for more details, including 52 # See the file "Documentation/sparse.txt" for more details, including
53 # where to get the "sparse" utility. 53 # where to get the "sparse" utility.
54 54
55 ifeq ("$(origin C)", "command line") 55 ifeq ("$(origin C)", "command line")
56 KBUILD_CHECKSRC = $(C) 56 KBUILD_CHECKSRC = $(C)
57 endif 57 endif
58 ifndef KBUILD_CHECKSRC 58 ifndef KBUILD_CHECKSRC
59 KBUILD_CHECKSRC = 0 59 KBUILD_CHECKSRC = 0
60 endif 60 endif
61 61
62 # Use make M=dir to specify directory of external module to build 62 # Use make M=dir to specify directory of external module to build
63 # Old syntax make ... SUBDIRS=$PWD is still supported 63 # Old syntax make ... SUBDIRS=$PWD is still supported
64 # Setting the environment variable KBUILD_EXTMOD take precedence 64 # Setting the environment variable KBUILD_EXTMOD take precedence
65 ifdef SUBDIRS 65 ifdef SUBDIRS
66 KBUILD_EXTMOD ?= $(SUBDIRS) 66 KBUILD_EXTMOD ?= $(SUBDIRS)
67 endif 67 endif
68 68
69 ifeq ("$(origin M)", "command line") 69 ifeq ("$(origin M)", "command line")
70 KBUILD_EXTMOD := $(M) 70 KBUILD_EXTMOD := $(M)
71 endif 71 endif
72 72
73 # kbuild supports saving output files in a separate directory. 73 # kbuild supports saving output files in a separate directory.
74 # To locate output files in a separate directory two syntaxes are supported. 74 # To locate output files in a separate directory two syntaxes are supported.
75 # In both cases the working directory must be the root of the kernel src. 75 # In both cases the working directory must be the root of the kernel src.
76 # 1) O= 76 # 1) O=
77 # Use "make O=dir/to/store/output/files/" 77 # Use "make O=dir/to/store/output/files/"
78 # 78 #
79 # 2) Set KBUILD_OUTPUT 79 # 2) Set KBUILD_OUTPUT
80 # Set the environment variable KBUILD_OUTPUT to point to the directory 80 # Set the environment variable KBUILD_OUTPUT to point to the directory
81 # where the output files shall be placed. 81 # where the output files shall be placed.
82 # export KBUILD_OUTPUT=dir/to/store/output/files/ 82 # export KBUILD_OUTPUT=dir/to/store/output/files/
83 # make 83 # make
84 # 84 #
85 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 85 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
86 # variable. 86 # variable.
87 87
88 88
89 # KBUILD_SRC is set on invocation of make in OBJ directory 89 # KBUILD_SRC is set on invocation of make in OBJ directory
90 # KBUILD_SRC is not intended to be used by the regular user (for now) 90 # KBUILD_SRC is not intended to be used by the regular user (for now)
91 ifeq ($(KBUILD_SRC),) 91 ifeq ($(KBUILD_SRC),)
92 92
93 # OK, Make called in directory where kernel src resides 93 # OK, Make called in directory where kernel src resides
94 # Do we want to locate output files in a separate directory? 94 # Do we want to locate output files in a separate directory?
95 ifeq ("$(origin O)", "command line") 95 ifeq ("$(origin O)", "command line")
96 KBUILD_OUTPUT := $(O) 96 KBUILD_OUTPUT := $(O)
97 endif 97 endif
98 98
99 # That's our default target when none is given on the command line 99 # That's our default target when none is given on the command line
100 PHONY := _all 100 PHONY := _all
101 _all: 101 _all:
102 102
103 # Cancel implicit rules on top Makefile 103 # Cancel implicit rules on top Makefile
104 $(CURDIR)/Makefile Makefile: ; 104 $(CURDIR)/Makefile Makefile: ;
105 105
106 ifneq ($(KBUILD_OUTPUT),) 106 ifneq ($(KBUILD_OUTPUT),)
107 # Invoke a second make in the output directory, passing relevant variables 107 # Invoke a second make in the output directory, passing relevant variables
108 # check that the output directory actually exists 108 # check that the output directory actually exists
109 saved-output := $(KBUILD_OUTPUT) 109 saved-output := $(KBUILD_OUTPUT)
110 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 110 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
111 $(if $(KBUILD_OUTPUT),, \ 111 $(if $(KBUILD_OUTPUT),, \
112 $(error output directory "$(saved-output)" does not exist)) 112 $(error output directory "$(saved-output)" does not exist))
113 113
114 PHONY += $(MAKECMDGOALS) sub-make 114 PHONY += $(MAKECMDGOALS) sub-make
115 115
116 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 116 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
117 $(Q)@: 117 $(Q)@:
118 118
119 sub-make: FORCE 119 sub-make: FORCE
120 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 120 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
121 KBUILD_SRC=$(CURDIR) \ 121 KBUILD_SRC=$(CURDIR) \
122 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ 122 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
123 $(filter-out _all sub-make,$(MAKECMDGOALS)) 123 $(filter-out _all sub-make,$(MAKECMDGOALS))
124 124
125 # Leave processing to above invocation of make 125 # Leave processing to above invocation of make
126 skip-makefile := 1 126 skip-makefile := 1
127 endif # ifneq ($(KBUILD_OUTPUT),) 127 endif # ifneq ($(KBUILD_OUTPUT),)
128 endif # ifeq ($(KBUILD_SRC),) 128 endif # ifeq ($(KBUILD_SRC),)
129 129
130 # We process the rest of the Makefile if this is the final invocation of make 130 # We process the rest of the Makefile if this is the final invocation of make
131 ifeq ($(skip-makefile),) 131 ifeq ($(skip-makefile),)
132 132
133 # If building an external module we do not care about the all: rule 133 # If building an external module we do not care about the all: rule
134 # but instead _all depend on modules 134 # but instead _all depend on modules
135 PHONY += all 135 PHONY += all
136 ifeq ($(KBUILD_EXTMOD),) 136 ifeq ($(KBUILD_EXTMOD),)
137 _all: all 137 _all: all
138 else 138 else
139 _all: modules 139 _all: modules
140 endif 140 endif
141 141
142 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 142 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
143 objtree := $(CURDIR) 143 objtree := $(CURDIR)
144 src := $(srctree) 144 src := $(srctree)
145 obj := $(objtree) 145 obj := $(objtree)
146 146
147 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 147 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
148 148
149 export srctree objtree VPATH 149 export srctree objtree VPATH
150 150
151 151
152 # SUBARCH tells the usermode build what the underlying arch is. That is set 152 # SUBARCH tells the usermode build what the underlying arch is. That is set
153 # first, and if a usermode build is happening, the "ARCH=um" on the command 153 # first, and if a usermode build is happening, the "ARCH=um" on the command
154 # line overrides the setting of ARCH below. If a native build is happening, 154 # line overrides the setting of ARCH below. If a native build is happening,
155 # then ARCH is assigned, getting whatever value it gets normally, and 155 # then ARCH is assigned, getting whatever value it gets normally, and
156 # SUBARCH is subsequently ignored. 156 # SUBARCH is subsequently ignored.
157 157
158 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 158 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
159 -e s/arm.*/arm/ -e s/sa110/arm/ \ 159 -e s/arm.*/arm/ -e s/sa110/arm/ \
160 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 160 -e s/s390x/s390/ -e s/parisc64/parisc/ \
161 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 161 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
162 -e s/sh[234].*/sh/ ) 162 -e s/sh[234].*/sh/ )
163 163
164 # Cross compiling and selecting different set of gcc/bin-utils 164 # Cross compiling and selecting different set of gcc/bin-utils
165 # --------------------------------------------------------------------------- 165 # ---------------------------------------------------------------------------
166 # 166 #
167 # When performing cross compilation for other architectures ARCH shall be set 167 # When performing cross compilation for other architectures ARCH shall be set
168 # to the target architecture. (See arch/* for the possibilities). 168 # to the target architecture. (See arch/* for the possibilities).
169 # ARCH can be set during invocation of make: 169 # ARCH can be set during invocation of make:
170 # make ARCH=ia64 170 # make ARCH=ia64
171 # Another way is to have ARCH set in the environment. 171 # Another way is to have ARCH set in the environment.
172 # The default ARCH is the host where make is executed. 172 # The default ARCH is the host where make is executed.
173 173
174 # CROSS_COMPILE specify the prefix used for all executables used 174 # CROSS_COMPILE specify the prefix used for all executables used
175 # during compilation. Only gcc and related bin-utils executables 175 # during compilation. Only gcc and related bin-utils executables
176 # are prefixed with $(CROSS_COMPILE). 176 # are prefixed with $(CROSS_COMPILE).
177 # CROSS_COMPILE can be set on the command line 177 # CROSS_COMPILE can be set on the command line
178 # make CROSS_COMPILE=ia64-linux- 178 # make CROSS_COMPILE=ia64-linux-
179 # Alternatively CROSS_COMPILE can be set in the environment. 179 # Alternatively CROSS_COMPILE can be set in the environment.
180 # Default value for CROSS_COMPILE is not to prefix executables 180 # Default value for CROSS_COMPILE is not to prefix executables
181 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 181 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
182 export KBUILD_BUILDHOST := $(SUBARCH) 182 export KBUILD_BUILDHOST := $(SUBARCH)
183 ARCH ?= $(SUBARCH) 183 ARCH ?= $(SUBARCH)
184 CROSS_COMPILE ?= 184 CROSS_COMPILE ?=
185 185
186 # Architecture as present in compile.h 186 # Architecture as present in compile.h
187 UTS_MACHINE := $(ARCH) 187 UTS_MACHINE := $(ARCH)
188 SRCARCH := $(ARCH) 188 SRCARCH := $(ARCH)
189 189
190 # Additional ARCH settings for x86 190 # Additional ARCH settings for x86
191 ifeq ($(ARCH),i386) 191 ifeq ($(ARCH),i386)
192 SRCARCH := x86 192 SRCARCH := x86
193 endif 193 endif
194 ifeq ($(ARCH),x86_64) 194 ifeq ($(ARCH),x86_64)
195 SRCARCH := x86 195 SRCARCH := x86
196 endif 196 endif
197 197
198 # Additional ARCH settings for sparc 198 # Additional ARCH settings for sparc
199 ifeq ($(ARCH),sparc64) 199 ifeq ($(ARCH),sparc64)
200 SRCARCH := sparc 200 SRCARCH := sparc
201 endif 201 endif
202 202
203 # Additional ARCH settings for sh 203 # Additional ARCH settings for sh
204 ifeq ($(ARCH),sh64) 204 ifeq ($(ARCH),sh64)
205 SRCARCH := sh 205 SRCARCH := sh
206 endif 206 endif
207 207
208 # Where to locate arch specific headers 208 # Where to locate arch specific headers
209 hdr-arch := $(SRCARCH) 209 hdr-arch := $(SRCARCH)
210 210
211 ifeq ($(ARCH),m68knommu) 211 ifeq ($(ARCH),m68knommu)
212 hdr-arch := m68k 212 hdr-arch := m68k
213 endif 213 endif
214 214
215 KCONFIG_CONFIG ?= .config 215 KCONFIG_CONFIG ?= .config
216 216
217 # SHELL used by kbuild 217 # SHELL used by kbuild
218 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 218 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
219 else if [ -x /bin/bash ]; then echo /bin/bash; \ 219 else if [ -x /bin/bash ]; then echo /bin/bash; \
220 else echo sh; fi ; fi) 220 else echo sh; fi ; fi)
221 221
222 HOSTCC = gcc 222 HOSTCC = gcc
223 HOSTCXX = g++ 223 HOSTCXX = g++
224 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 224 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
225 HOSTCXXFLAGS = -O2 225 HOSTCXXFLAGS = -O2
226 226
227 # Decide whether to build built-in, modular, or both. 227 # Decide whether to build built-in, modular, or both.
228 # Normally, just do built-in. 228 # Normally, just do built-in.
229 229
230 KBUILD_MODULES := 230 KBUILD_MODULES :=
231 KBUILD_BUILTIN := 1 231 KBUILD_BUILTIN := 1
232 232
233 # If we have only "make modules", don't compile built-in objects. 233 # If we have only "make modules", don't compile built-in objects.
234 # When we're building modules with modversions, we need to consider 234 # When we're building modules with modversions, we need to consider
235 # the built-in objects during the descend as well, in order to 235 # the built-in objects during the descend as well, in order to
236 # make sure the checksums are up to date before we record them. 236 # make sure the checksums are up to date before we record them.
237 237
238 ifeq ($(MAKECMDGOALS),modules) 238 ifeq ($(MAKECMDGOALS),modules)
239 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 239 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
240 endif 240 endif
241 241
242 # If we have "make <whatever> modules", compile modules 242 # If we have "make <whatever> modules", compile modules
243 # in addition to whatever we do anyway. 243 # in addition to whatever we do anyway.
244 # Just "make" or "make all" shall build modules as well 244 # Just "make" or "make all" shall build modules as well
245 245
246 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 246 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
247 KBUILD_MODULES := 1 247 KBUILD_MODULES := 1
248 endif 248 endif
249 249
250 ifeq ($(MAKECMDGOALS),) 250 ifeq ($(MAKECMDGOALS),)
251 KBUILD_MODULES := 1 251 KBUILD_MODULES := 1
252 endif 252 endif
253 253
254 export KBUILD_MODULES KBUILD_BUILTIN 254 export KBUILD_MODULES KBUILD_BUILTIN
255 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 255 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
256 256
257 # Beautify output 257 # Beautify output
258 # --------------------------------------------------------------------------- 258 # ---------------------------------------------------------------------------
259 # 259 #
260 # Normally, we echo the whole command before executing it. By making 260 # Normally, we echo the whole command before executing it. By making
261 # that echo $($(quiet)$(cmd)), we now have the possibility to set 261 # that echo $($(quiet)$(cmd)), we now have the possibility to set
262 # $(quiet) to choose other forms of output instead, e.g. 262 # $(quiet) to choose other forms of output instead, e.g.
263 # 263 #
264 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 264 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
265 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 265 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
266 # 266 #
267 # If $(quiet) is empty, the whole command will be printed. 267 # If $(quiet) is empty, the whole command will be printed.
268 # If it is set to "quiet_", only the short version will be printed. 268 # If it is set to "quiet_", only the short version will be printed.
269 # If it is set to "silent_", nothing will be printed at all, since 269 # If it is set to "silent_", nothing will be printed at all, since
270 # the variable $(silent_cmd_cc_o_c) doesn't exist. 270 # the variable $(silent_cmd_cc_o_c) doesn't exist.
271 # 271 #
272 # A simple variant is to prefix commands with $(Q) - that's useful 272 # A simple variant is to prefix commands with $(Q) - that's useful
273 # for commands that shall be hidden in non-verbose mode. 273 # for commands that shall be hidden in non-verbose mode.
274 # 274 #
275 # $(Q)ln $@ :< 275 # $(Q)ln $@ :<
276 # 276 #
277 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 277 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
278 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 278 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
279 279
280 ifeq ($(KBUILD_VERBOSE),1) 280 ifeq ($(KBUILD_VERBOSE),1)
281 quiet = 281 quiet =
282 Q = 282 Q =
283 else 283 else
284 quiet=quiet_ 284 quiet=quiet_
285 Q = @ 285 Q = @
286 endif 286 endif
287 287
288 # If the user is running make -s (silent mode), suppress echoing of 288 # If the user is running make -s (silent mode), suppress echoing of
289 # commands 289 # commands
290 290
291 ifneq ($(findstring s,$(MAKEFLAGS)),) 291 ifneq ($(findstring s,$(MAKEFLAGS)),)
292 quiet=silent_ 292 quiet=silent_
293 endif 293 endif
294 294
295 export quiet Q KBUILD_VERBOSE 295 export quiet Q KBUILD_VERBOSE
296 296
297 297
298 # Look for make include files relative to root of kernel src 298 # Look for make include files relative to root of kernel src
299 MAKEFLAGS += --include-dir=$(srctree) 299 MAKEFLAGS += --include-dir=$(srctree)
300 300
301 # We need some generic definitions (do not try to remake the file). 301 # We need some generic definitions (do not try to remake the file).
302 $(srctree)/scripts/Kbuild.include: ; 302 $(srctree)/scripts/Kbuild.include: ;
303 include $(srctree)/scripts/Kbuild.include 303 include $(srctree)/scripts/Kbuild.include
304 304
305 # Make variables (CC, etc...) 305 # Make variables (CC, etc...)
306 306
307 AS = $(CROSS_COMPILE)as 307 AS = $(CROSS_COMPILE)as
308 LD = $(CROSS_COMPILE)ld 308 LD = $(CROSS_COMPILE)ld
309 CC = $(CROSS_COMPILE)gcc 309 CC = $(CROSS_COMPILE)gcc
310 CPP = $(CC) -E 310 CPP = $(CC) -E
311 AR = $(CROSS_COMPILE)ar 311 AR = $(CROSS_COMPILE)ar
312 NM = $(CROSS_COMPILE)nm 312 NM = $(CROSS_COMPILE)nm
313 STRIP = $(CROSS_COMPILE)strip 313 STRIP = $(CROSS_COMPILE)strip
314 OBJCOPY = $(CROSS_COMPILE)objcopy 314 OBJCOPY = $(CROSS_COMPILE)objcopy
315 OBJDUMP = $(CROSS_COMPILE)objdump 315 OBJDUMP = $(CROSS_COMPILE)objdump
316 AWK = awk 316 AWK = awk
317 GENKSYMS = scripts/genksyms/genksyms 317 GENKSYMS = scripts/genksyms/genksyms
318 DEPMOD = /sbin/depmod 318 DEPMOD = /sbin/depmod
319 KALLSYMS = scripts/kallsyms 319 KALLSYMS = scripts/kallsyms
320 PERL = perl 320 PERL = perl
321 CHECK = sparse 321 CHECK = sparse
322 322
323 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 323 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
324 -Wbitwise -Wno-return-void $(CF) 324 -Wbitwise -Wno-return-void $(CF)
325 MODFLAGS = -DMODULE 325 MODFLAGS = -DMODULE
326 CFLAGS_MODULE = $(MODFLAGS) 326 CFLAGS_MODULE = $(MODFLAGS)
327 AFLAGS_MODULE = $(MODFLAGS) 327 AFLAGS_MODULE = $(MODFLAGS)
328 LDFLAGS_MODULE = 328 LDFLAGS_MODULE =
329 CFLAGS_KERNEL = 329 CFLAGS_KERNEL =
330 AFLAGS_KERNEL = 330 AFLAGS_KERNEL =
331 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage 331 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
332 332
333 333
334 # Use LINUXINCLUDE when you must reference the include/ directory. 334 # Use LINUXINCLUDE when you must reference the include/ directory.
335 # Needed to be compatible with the O= option 335 # Needed to be compatible with the O= option
336 LINUXINCLUDE := -Iinclude \ 336 LINUXINCLUDE := -Iinclude \
337 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ 337 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
338 -I$(srctree)/arch/$(hdr-arch)/include \ 338 -I$(srctree)/arch/$(hdr-arch)/include \
339 -include include/linux/autoconf.h 339 -include include/linux/autoconf.h
340 340
341 KBUILD_CPPFLAGS := -D__KERNEL__ 341 KBUILD_CPPFLAGS := -D__KERNEL__
342 342
343 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 343 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
344 -fno-strict-aliasing -fno-common \ 344 -fno-strict-aliasing -fno-common \
345 -Werror-implicit-function-declaration \ 345 -Werror-implicit-function-declaration \
346 -Wno-format-security \ 346 -Wno-format-security \
347 -fno-delete-null-pointer-checks 347 -fno-delete-null-pointer-checks
348 KBUILD_AFLAGS := -D__ASSEMBLY__ 348 KBUILD_AFLAGS := -D__ASSEMBLY__
349 349
350 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 350 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
351 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 351 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
352 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 352 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
353 353
354 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 354 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
355 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 355 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
356 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE 356 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
357 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 357 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
358 358
359 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 359 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
360 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 360 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
361 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 361 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
362 362
363 # When compiling out-of-tree modules, put MODVERDIR in the module 363 # When compiling out-of-tree modules, put MODVERDIR in the module
364 # tree rather than in the kernel tree. The kernel tree might 364 # tree rather than in the kernel tree. The kernel tree might
365 # even be read-only. 365 # even be read-only.
366 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 366 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
367 367
368 # Files to ignore in find ... statements 368 # Files to ignore in find ... statements
369 369
370 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o 370 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
371 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 371 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
372 372
373 # =========================================================================== 373 # ===========================================================================
374 # Rules shared between *config targets and build targets 374 # Rules shared between *config targets and build targets
375 375
376 # Basic helpers built in scripts/ 376 # Basic helpers built in scripts/
377 PHONY += scripts_basic 377 PHONY += scripts_basic
378 scripts_basic: 378 scripts_basic:
379 $(Q)$(MAKE) $(build)=scripts/basic 379 $(Q)$(MAKE) $(build)=scripts/basic
380 380
381 # To avoid any implicit rule to kick in, define an empty command. 381 # To avoid any implicit rule to kick in, define an empty command.
382 scripts/basic/%: scripts_basic ; 382 scripts/basic/%: scripts_basic ;
383 383
384 PHONY += outputmakefile 384 PHONY += outputmakefile
385 # outputmakefile generates a Makefile in the output directory, if using a 385 # outputmakefile generates a Makefile in the output directory, if using a
386 # separate output directory. This allows convenient use of make in the 386 # separate output directory. This allows convenient use of make in the
387 # output directory. 387 # output directory.
388 outputmakefile: 388 outputmakefile:
389 ifneq ($(KBUILD_SRC),) 389 ifneq ($(KBUILD_SRC),)
390 $(Q)ln -fsn $(srctree) source 390 $(Q)ln -fsn $(srctree) source
391 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 391 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
392 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 392 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
393 endif 393 endif
394 394
395 # To make sure we do not include .config for any of the *config targets 395 # To make sure we do not include .config for any of the *config targets
396 # catch them early, and hand them over to scripts/kconfig/Makefile 396 # catch them early, and hand them over to scripts/kconfig/Makefile
397 # It is allowed to specify more targets when calling make, including 397 # It is allowed to specify more targets when calling make, including
398 # mixing *config targets and build targets. 398 # mixing *config targets and build targets.
399 # For example 'make oldconfig all'. 399 # For example 'make oldconfig all'.
400 # Detect when mixed targets is specified, and make a second invocation 400 # Detect when mixed targets is specified, and make a second invocation
401 # of make so .config is not included in this case either (for *config). 401 # of make so .config is not included in this case either (for *config).
402 402
403 no-dot-config-targets := clean mrproper distclean \ 403 no-dot-config-targets := clean mrproper distclean \
404 cscope TAGS tags help %docs check% \ 404 cscope TAGS tags help %docs check% \
405 include/linux/version.h headers_% \ 405 include/linux/version.h headers_% \
406 kernelrelease kernelversion 406 kernelrelease kernelversion
407 407
408 config-targets := 0 408 config-targets := 0
409 mixed-targets := 0 409 mixed-targets := 0
410 dot-config := 1 410 dot-config := 1
411 411
412 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 412 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
413 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 413 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
414 dot-config := 0 414 dot-config := 0
415 endif 415 endif
416 endif 416 endif
417 417
418 ifeq ($(KBUILD_EXTMOD),) 418 ifeq ($(KBUILD_EXTMOD),)
419 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 419 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
420 config-targets := 1 420 config-targets := 1
421 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 421 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
422 mixed-targets := 1 422 mixed-targets := 1
423 endif 423 endif
424 endif 424 endif
425 endif 425 endif
426 426
427 ifeq ($(mixed-targets),1) 427 ifeq ($(mixed-targets),1)
428 # =========================================================================== 428 # ===========================================================================
429 # We're called with mixed targets (*config and build targets). 429 # We're called with mixed targets (*config and build targets).
430 # Handle them one by one. 430 # Handle them one by one.
431 431
432 %:: FORCE 432 %:: FORCE
433 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 433 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
434 434
435 else 435 else
436 ifeq ($(config-targets),1) 436 ifeq ($(config-targets),1)
437 # =========================================================================== 437 # ===========================================================================
438 # *config targets only - make sure prerequisites are updated, and descend 438 # *config targets only - make sure prerequisites are updated, and descend
439 # in scripts/kconfig to make the *config target 439 # in scripts/kconfig to make the *config target
440 440
441 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 441 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
442 # KBUILD_DEFCONFIG may point out an alternative default configuration 442 # KBUILD_DEFCONFIG may point out an alternative default configuration
443 # used for 'make defconfig' 443 # used for 'make defconfig'
444 include $(srctree)/arch/$(SRCARCH)/Makefile 444 include $(srctree)/arch/$(SRCARCH)/Makefile
445 export KBUILD_DEFCONFIG KBUILD_KCONFIG 445 export KBUILD_DEFCONFIG KBUILD_KCONFIG
446 446
447 config: scripts_basic outputmakefile FORCE 447 config: scripts_basic outputmakefile FORCE
448 $(Q)mkdir -p include/linux include/config 448 $(Q)mkdir -p include/linux include/config
449 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 449 $(Q)$(MAKE) $(build)=scripts/kconfig $@
450 450
451 %config: scripts_basic outputmakefile FORCE 451 %config: scripts_basic outputmakefile FORCE
452 $(Q)mkdir -p include/linux include/config 452 $(Q)mkdir -p include/linux include/config
453 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 453 $(Q)$(MAKE) $(build)=scripts/kconfig $@
454 454
455 else 455 else
456 # =========================================================================== 456 # ===========================================================================
457 # Build targets only - this includes vmlinux, arch specific targets, clean 457 # Build targets only - this includes vmlinux, arch specific targets, clean
458 # targets and others. In general all targets except *config targets. 458 # targets and others. In general all targets except *config targets.
459 459
460 ifeq ($(KBUILD_EXTMOD),) 460 ifeq ($(KBUILD_EXTMOD),)
461 # Additional helpers built in scripts/ 461 # Additional helpers built in scripts/
462 # Carefully list dependencies so we do not try to build scripts twice 462 # Carefully list dependencies so we do not try to build scripts twice
463 # in parallel 463 # in parallel
464 PHONY += scripts 464 PHONY += scripts
465 scripts: scripts_basic include/config/auto.conf 465 scripts: scripts_basic include/config/auto.conf
466 $(Q)$(MAKE) $(build)=$(@) 466 $(Q)$(MAKE) $(build)=$(@)
467 467
468 # Objects we will link into vmlinux / subdirs we need to visit 468 # Objects we will link into vmlinux / subdirs we need to visit
469 init-y := init/ 469 init-y := init/
470 drivers-y := drivers/ sound/ firmware/ 470 drivers-y := drivers/ sound/ firmware/
471 net-y := net/ 471 net-y := net/
472 libs-y := lib/ 472 libs-y := lib/
473 core-y := usr/ 473 core-y := usr/
474 endif # KBUILD_EXTMOD 474 endif # KBUILD_EXTMOD
475 475
476 ifeq ($(dot-config),1) 476 ifeq ($(dot-config),1)
477 # Read in config 477 # Read in config
478 -include include/config/auto.conf 478 -include include/config/auto.conf
479 479
480 ifeq ($(KBUILD_EXTMOD),) 480 ifeq ($(KBUILD_EXTMOD),)
481 # Read in dependencies to all Kconfig* files, make sure to run 481 # Read in dependencies to all Kconfig* files, make sure to run
482 # oldconfig if changes are detected. 482 # oldconfig if changes are detected.
483 -include include/config/auto.conf.cmd 483 -include include/config/auto.conf.cmd
484 484
485 # To avoid any implicit rule to kick in, define an empty command 485 # To avoid any implicit rule to kick in, define an empty command
486 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 486 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
487 487
488 # If .config is newer than include/config/auto.conf, someone tinkered 488 # If .config is newer than include/config/auto.conf, someone tinkered
489 # with it and forgot to run make oldconfig. 489 # with it and forgot to run make oldconfig.
490 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 490 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
491 # we execute the config step to be sure to catch updated Kconfig files 491 # we execute the config step to be sure to catch updated Kconfig files
492 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 492 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
493 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 493 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
494 else 494 else
495 # external modules needs include/linux/autoconf.h and include/config/auto.conf 495 # external modules needs include/linux/autoconf.h and include/config/auto.conf
496 # but do not care if they are up-to-date. Use auto.conf to trigger the test 496 # but do not care if they are up-to-date. Use auto.conf to trigger the test
497 PHONY += include/config/auto.conf 497 PHONY += include/config/auto.conf
498 498
499 include/config/auto.conf: 499 include/config/auto.conf:
500 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ 500 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \
501 echo; \ 501 echo; \
502 echo " ERROR: Kernel configuration is invalid."; \ 502 echo " ERROR: Kernel configuration is invalid."; \
503 echo " include/linux/autoconf.h or $@ are missing."; \ 503 echo " include/linux/autoconf.h or $@ are missing."; \
504 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 504 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
505 echo; \ 505 echo; \
506 /bin/false) 506 /bin/false)
507 507
508 endif # KBUILD_EXTMOD 508 endif # KBUILD_EXTMOD
509 509
510 else 510 else
511 # Dummy target needed, because used as prerequisite 511 # Dummy target needed, because used as prerequisite
512 include/config/auto.conf: ; 512 include/config/auto.conf: ;
513 endif # $(dot-config) 513 endif # $(dot-config)
514 514
515 # The all: target is the default when no target is given on the 515 # The all: target is the default when no target is given on the
516 # command line. 516 # command line.
517 # This allow a user to issue only 'make' to build a kernel including modules 517 # This allow a user to issue only 'make' to build a kernel including modules
518 # Defaults vmlinux but it is usually overridden in the arch makefile 518 # Defaults vmlinux but it is usually overridden in the arch makefile
519 all: vmlinux 519 all: vmlinux
520 520
521 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 521 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
522 KBUILD_CFLAGS += -Os 522 KBUILD_CFLAGS += -Os
523 else 523 else
524 KBUILD_CFLAGS += -O2 524 KBUILD_CFLAGS += -O2
525 endif 525 endif
526 526
527 include $(srctree)/arch/$(SRCARCH)/Makefile 527 include $(srctree)/arch/$(SRCARCH)/Makefile
528 528
529 ifneq ($(CONFIG_FRAME_WARN),0) 529 ifneq ($(CONFIG_FRAME_WARN),0)
530 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 530 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
531 endif 531 endif
532 532
533 # Force gcc to behave correct even for buggy distributions 533 # Force gcc to behave correct even for buggy distributions
534 ifndef CONFIG_CC_STACKPROTECTOR 534 ifndef CONFIG_CC_STACKPROTECTOR
535 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) 535 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
536 endif 536 endif
537 537
538 ifdef CONFIG_FRAME_POINTER 538 ifdef CONFIG_FRAME_POINTER
539 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 539 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
540 else 540 else
541 KBUILD_CFLAGS += -fomit-frame-pointer 541 KBUILD_CFLAGS += -fomit-frame-pointer
542 endif 542 endif
543 543
544 ifdef CONFIG_DEBUG_INFO 544 ifdef CONFIG_DEBUG_INFO
545 KBUILD_CFLAGS += -g 545 KBUILD_CFLAGS += -g
546 KBUILD_AFLAGS += -gdwarf-2 546 KBUILD_AFLAGS += -gdwarf-2
547 endif 547 endif
548 548
549 ifdef CONFIG_FUNCTION_TRACER 549 ifdef CONFIG_FUNCTION_TRACER
550 KBUILD_CFLAGS += -pg 550 KBUILD_CFLAGS += -pg
551 endif 551 endif
552 552
553 # We trigger additional mismatches with less inlining 553 # We trigger additional mismatches with less inlining
554 ifdef CONFIG_DEBUG_SECTION_MISMATCH 554 ifdef CONFIG_DEBUG_SECTION_MISMATCH
555 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 555 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
556 endif 556 endif
557 557
558 # arch Makefile may override CC so keep this after arch Makefile is included 558 # arch Makefile may override CC so keep this after arch Makefile is included
559 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 559 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
560 CHECKFLAGS += $(NOSTDINC_FLAGS) 560 CHECKFLAGS += $(NOSTDINC_FLAGS)
561 561
562 # warn about C99 declaration after statement 562 # warn about C99 declaration after statement
563 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 563 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
564 564
565 # disable pointer signed / unsigned warnings in gcc 4.0 565 # disable pointer signed / unsigned warnings in gcc 4.0
566 KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) 566 KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
567 567
568 # disable invalid "can't wrap" optimizations for signed / pointers 568 # disable invalid "can't wrap" optimizations for signed / pointers
569 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 569 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
570 570
571 # revert to pre-gcc-4.4 behaviour of .eh_frame 571 # revert to pre-gcc-4.4 behaviour of .eh_frame
572 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) 572 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
573 573
574 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 574 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
575 # But warn user when we do so 575 # But warn user when we do so
576 warn-assign = \ 576 warn-assign = \
577 $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") 577 $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
578 578
579 ifneq ($(KCPPFLAGS),) 579 ifneq ($(KCPPFLAGS),)
580 $(call warn-assign,CPPFLAGS) 580 $(call warn-assign,CPPFLAGS)
581 KBUILD_CPPFLAGS += $(KCPPFLAGS) 581 KBUILD_CPPFLAGS += $(KCPPFLAGS)
582 endif 582 endif
583 ifneq ($(KAFLAGS),) 583 ifneq ($(KAFLAGS),)
584 $(call warn-assign,AFLAGS) 584 $(call warn-assign,AFLAGS)
585 KBUILD_AFLAGS += $(KAFLAGS) 585 KBUILD_AFLAGS += $(KAFLAGS)
586 endif 586 endif
587 ifneq ($(KCFLAGS),) 587 ifneq ($(KCFLAGS),)
588 $(call warn-assign,CFLAGS) 588 $(call warn-assign,CFLAGS)
589 KBUILD_CFLAGS += $(KCFLAGS) 589 KBUILD_CFLAGS += $(KCFLAGS)
590 endif 590 endif
591 591
592 # Use --build-id when available. 592 # Use --build-id when available.
593 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 593 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
594 $(call ld-option, -Wl$(comma)--build-id,)) 594 $(call ld-option, -Wl$(comma)--build-id,))
595 LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 595 LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
596 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 596 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
597 597
598 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 598 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
599 LDFLAGS_vmlinux += -X 599 LDFLAGS_vmlinux += -X
600 endif 600 endif
601 601
602 # Default kernel image to build when no specific target is given. 602 # Default kernel image to build when no specific target is given.
603 # KBUILD_IMAGE may be overruled on the command line or 603 # KBUILD_IMAGE may be overruled on the command line or
604 # set in the environment 604 # set in the environment
605 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 605 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
606 # this default value 606 # this default value
607 export KBUILD_IMAGE ?= vmlinux 607 export KBUILD_IMAGE ?= vmlinux
608 608
609 # 609 #
610 # INSTALL_PATH specifies where to place the updated kernel and system map 610 # INSTALL_PATH specifies where to place the updated kernel and system map
611 # images. Default is /boot, but you can set it to other values 611 # images. Default is /boot, but you can set it to other values
612 export INSTALL_PATH ?= /boot 612 export INSTALL_PATH ?= /boot
613 613
614 # 614 #
615 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 615 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
616 # relocations required by build roots. This is not defined in the 616 # relocations required by build roots. This is not defined in the
617 # makefile but the argument can be passed to make if needed. 617 # makefile but the argument can be passed to make if needed.
618 # 618 #
619 619
620 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 620 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
621 export MODLIB 621 export MODLIB
622 622
623 # 623 #
624 # INSTALL_MOD_STRIP, if defined, will cause modules to be 624 # INSTALL_MOD_STRIP, if defined, will cause modules to be
625 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 625 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
626 # the default option --strip-debug will be used. Otherwise, 626 # the default option --strip-debug will be used. Otherwise,
627 # INSTALL_MOD_STRIP will used as the options to the strip command. 627 # INSTALL_MOD_STRIP will used as the options to the strip command.
628 628
629 ifdef INSTALL_MOD_STRIP 629 ifdef INSTALL_MOD_STRIP
630 ifeq ($(INSTALL_MOD_STRIP),1) 630 ifeq ($(INSTALL_MOD_STRIP),1)
631 mod_strip_cmd = $(STRIP) --strip-debug 631 mod_strip_cmd = $(STRIP) --strip-debug
632 else 632 else
633 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 633 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
634 endif # INSTALL_MOD_STRIP=1 634 endif # INSTALL_MOD_STRIP=1
635 else 635 else
636 mod_strip_cmd = true 636 mod_strip_cmd = true
637 endif # INSTALL_MOD_STRIP 637 endif # INSTALL_MOD_STRIP
638 export mod_strip_cmd 638 export mod_strip_cmd
639 639
640 640
641 ifeq ($(KBUILD_EXTMOD),) 641 ifeq ($(KBUILD_EXTMOD),)
642 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 642 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
643 643
644 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 644 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
645 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 645 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
646 $(net-y) $(net-m) $(libs-y) $(libs-m))) 646 $(net-y) $(net-m) $(libs-y) $(libs-m)))
647 647
648 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 648 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
649 $(init-n) $(init-) \ 649 $(init-n) $(init-) \
650 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 650 $(core-n) $(core-) $(drivers-n) $(drivers-) \
651 $(net-n) $(net-) $(libs-n) $(libs-)))) 651 $(net-n) $(net-) $(libs-n) $(libs-))))
652 652
653 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 653 init-y := $(patsubst %/, %/built-in.o, $(init-y))
654 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 654 core-y := $(patsubst %/, %/built-in.o, $(core-y))
655 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 655 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
656 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 656 net-y := $(patsubst %/, %/built-in.o, $(net-y))
657 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 657 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
658 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 658 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
659 libs-y := $(libs-y1) $(libs-y2) 659 libs-y := $(libs-y1) $(libs-y2)
660 660
661 # Build vmlinux 661 # Build vmlinux
662 # --------------------------------------------------------------------------- 662 # ---------------------------------------------------------------------------
663 # vmlinux is built from the objects selected by $(vmlinux-init) and 663 # vmlinux is built from the objects selected by $(vmlinux-init) and
664 # $(vmlinux-main). Most are built-in.o files from top-level directories 664 # $(vmlinux-main). Most are built-in.o files from top-level directories
665 # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. 665 # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
666 # Ordering when linking is important, and $(vmlinux-init) must be first. 666 # Ordering when linking is important, and $(vmlinux-init) must be first.
667 # 667 #
668 # vmlinux 668 # vmlinux
669 # ^ 669 # ^
670 # | 670 # |
671 # +-< $(vmlinux-init) 671 # +-< $(vmlinux-init)
672 # | +--< init/version.o + more 672 # | +--< init/version.o + more
673 # | 673 # |
674 # +--< $(vmlinux-main) 674 # +--< $(vmlinux-main)
675 # | +--< driver/built-in.o mm/built-in.o + more 675 # | +--< driver/built-in.o mm/built-in.o + more
676 # | 676 # |
677 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 677 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
678 # 678 #
679 # vmlinux version (uname -v) cannot be updated during normal 679 # vmlinux version (uname -v) cannot be updated during normal
680 # descending-into-subdirs phase since we do not yet know if we need to 680 # descending-into-subdirs phase since we do not yet know if we need to
681 # update vmlinux. 681 # update vmlinux.
682 # Therefore this step is delayed until just before final link of vmlinux - 682 # Therefore this step is delayed until just before final link of vmlinux -
683 # except in the kallsyms case where it is done just before adding the 683 # except in the kallsyms case where it is done just before adding the
684 # symbols to the kernel. 684 # symbols to the kernel.
685 # 685 #
686 # System.map is generated to document addresses of all kernel symbols 686 # System.map is generated to document addresses of all kernel symbols
687 687
688 vmlinux-init := $(head-y) $(init-y) 688 vmlinux-init := $(head-y) $(init-y)
689 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 689 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
690 vmlinux-all := $(vmlinux-init) $(vmlinux-main) 690 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
691 vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds 691 vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds
692 export KBUILD_VMLINUX_OBJS := $(vmlinux-all) 692 export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
693 693
694 # Rule to link vmlinux - also used during CONFIG_KALLSYMS 694 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
695 # May be overridden by arch/$(ARCH)/Makefile 695 # May be overridden by arch/$(ARCH)/Makefile
696 quiet_cmd_vmlinux__ ?= LD $@ 696 quiet_cmd_vmlinux__ ?= LD $@
697 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 697 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
698 -T $(vmlinux-lds) $(vmlinux-init) \ 698 -T $(vmlinux-lds) $(vmlinux-init) \
699 --start-group $(vmlinux-main) --end-group \ 699 --start-group $(vmlinux-main) --end-group \
700 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) 700 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
701 701
702 # Generate new vmlinux version 702 # Generate new vmlinux version
703 quiet_cmd_vmlinux_version = GEN .version 703 quiet_cmd_vmlinux_version = GEN .version
704 cmd_vmlinux_version = set -e; \ 704 cmd_vmlinux_version = set -e; \
705 if [ ! -r .version ]; then \ 705 if [ ! -r .version ]; then \
706 rm -f .version; \ 706 rm -f .version; \
707 echo 1 >.version; \ 707 echo 1 >.version; \
708 else \ 708 else \
709 mv .version .old_version; \ 709 mv .version .old_version; \
710 expr 0$$(cat .old_version) + 1 >.version; \ 710 expr 0$$(cat .old_version) + 1 >.version; \
711 fi; \ 711 fi; \
712 $(MAKE) $(build)=init 712 $(MAKE) $(build)=init
713 713
714 # Generate System.map 714 # Generate System.map
715 quiet_cmd_sysmap = SYSMAP 715 quiet_cmd_sysmap = SYSMAP
716 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 716 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
717 717
718 # Link of vmlinux 718 # Link of vmlinux
719 # If CONFIG_KALLSYMS is set .version is already updated 719 # If CONFIG_KALLSYMS is set .version is already updated
720 # Generate System.map and verify that the content is consistent 720 # Generate System.map and verify that the content is consistent
721 # Use + in front of the vmlinux_version rule to silent warning with make -j2 721 # Use + in front of the vmlinux_version rule to silent warning with make -j2
722 # First command is ':' to allow us to use + in front of the rule 722 # First command is ':' to allow us to use + in front of the rule
723 define rule_vmlinux__ 723 define rule_vmlinux__
724 : 724 :
725 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 725 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
726 726
727 $(call cmd,vmlinux__) 727 $(call cmd,vmlinux__)
728 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 728 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
729 729
730 $(Q)$(if $($(quiet)cmd_sysmap), \ 730 $(Q)$(if $($(quiet)cmd_sysmap), \
731 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 731 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
732 $(cmd_sysmap) $@ System.map; \ 732 $(cmd_sysmap) $@ System.map; \
733 if [ $$? -ne 0 ]; then \ 733 if [ $$? -ne 0 ]; then \
734 rm -f $@; \ 734 rm -f $@; \
735 /bin/false; \ 735 /bin/false; \
736 fi; 736 fi;
737 $(verify_kallsyms) 737 $(verify_kallsyms)
738 endef 738 endef
739 739
740 740
741 ifdef CONFIG_KALLSYMS 741 ifdef CONFIG_KALLSYMS
742 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 742 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
743 # It's a three stage process: 743 # It's a three stage process:
744 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 744 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
745 # empty 745 # empty
746 # Running kallsyms on that gives us .tmp_kallsyms1.o with 746 # Running kallsyms on that gives us .tmp_kallsyms1.o with
747 # the right size - vmlinux version (uname -v) is updated during this step 747 # the right size - vmlinux version (uname -v) is updated during this step
748 # o .tmp_vmlinux2 now has a __kallsyms section of the right size, 748 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
749 # but due to the added section, some addresses have shifted. 749 # but due to the added section, some addresses have shifted.
750 # From here, we generate a correct .tmp_kallsyms2.o 750 # From here, we generate a correct .tmp_kallsyms2.o
751 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 751 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
752 # o Verify that the System.map from vmlinux matches the map from 752 # o Verify that the System.map from vmlinux matches the map from
753 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 753 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
754 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using 754 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
755 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 755 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
756 # temporary bypass to allow the kernel to be built while the 756 # temporary bypass to allow the kernel to be built while the
757 # maintainers work out what went wrong with kallsyms. 757 # maintainers work out what went wrong with kallsyms.
758 758
759 ifdef CONFIG_KALLSYMS_EXTRA_PASS 759 ifdef CONFIG_KALLSYMS_EXTRA_PASS
760 last_kallsyms := 3 760 last_kallsyms := 3
761 else 761 else
762 last_kallsyms := 2 762 last_kallsyms := 2
763 endif 763 endif
764 764
765 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 765 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
766 766
767 define verify_kallsyms 767 define verify_kallsyms
768 $(Q)$(if $($(quiet)cmd_sysmap), \ 768 $(Q)$(if $($(quiet)cmd_sysmap), \
769 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 769 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
770 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 770 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
771 $(Q)cmp -s System.map .tmp_System.map || \ 771 $(Q)cmp -s System.map .tmp_System.map || \
772 (echo Inconsistent kallsyms data; \ 772 (echo Inconsistent kallsyms data; \
773 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ 773 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
774 rm .tmp_kallsyms* ; /bin/false ) 774 rm .tmp_kallsyms* ; /bin/false )
775 endef 775 endef
776 776
777 # Update vmlinux version before link 777 # Update vmlinux version before link
778 # Use + in front of this rule to silent warning about make -j1 778 # Use + in front of this rule to silent warning about make -j1
779 # First command is ':' to allow us to use + in front of this rule 779 # First command is ':' to allow us to use + in front of this rule
780 cmd_ksym_ld = $(cmd_vmlinux__) 780 cmd_ksym_ld = $(cmd_vmlinux__)
781 define rule_ksym_ld 781 define rule_ksym_ld
782 : 782 :
783 +$(call cmd,vmlinux_version) 783 +$(call cmd,vmlinux_version)
784 $(call cmd,vmlinux__) 784 $(call cmd,vmlinux__)
785 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 785 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
786 endef 786 endef
787 787
788 # Generate .S file with all kernel symbols 788 # Generate .S file with all kernel symbols
789 quiet_cmd_kallsyms = KSYM $@ 789 quiet_cmd_kallsyms = KSYM $@
790 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 790 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
791 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 791 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
792 792
793 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 793 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
794 $(call if_changed_dep,as_o_S) 794 $(call if_changed_dep,as_o_S)
795 795
796 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 796 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
797 $(call cmd,kallsyms) 797 $(call cmd,kallsyms)
798 798
799 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 799 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
800 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 800 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
801 $(call if_changed_rule,ksym_ld) 801 $(call if_changed_rule,ksym_ld)
802 802
803 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 803 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
804 $(call if_changed,vmlinux__) 804 $(call if_changed,vmlinux__)
805 805
806 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 806 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
807 $(call if_changed,vmlinux__) 807 $(call if_changed,vmlinux__)
808 808
809 # Needs to visit scripts/ before $(KALLSYMS) can be used. 809 # Needs to visit scripts/ before $(KALLSYMS) can be used.
810 $(KALLSYMS): scripts ; 810 $(KALLSYMS): scripts ;
811 811
812 # Generate some data for debugging strange kallsyms problems 812 # Generate some data for debugging strange kallsyms problems
813 debug_kallsyms: .tmp_map$(last_kallsyms) 813 debug_kallsyms: .tmp_map$(last_kallsyms)
814 814
815 .tmp_map%: .tmp_vmlinux% FORCE 815 .tmp_map%: .tmp_vmlinux% FORCE
816 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 816 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
817 817
818 .tmp_map3: .tmp_map2 818 .tmp_map3: .tmp_map2
819 819
820 .tmp_map2: .tmp_map1 820 .tmp_map2: .tmp_map1
821 821
822 endif # ifdef CONFIG_KALLSYMS 822 endif # ifdef CONFIG_KALLSYMS
823 823
824 # Do modpost on a prelinked vmlinux. The finally linked vmlinux has 824 # Do modpost on a prelinked vmlinux. The finally linked vmlinux has
825 # relevant sections renamed as per the linker script. 825 # relevant sections renamed as per the linker script.
826 quiet_cmd_vmlinux-modpost = LD $@ 826 quiet_cmd_vmlinux-modpost = LD $@
827 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ 827 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
828 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ 828 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \
829 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 829 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
830 define rule_vmlinux-modpost 830 define rule_vmlinux-modpost
831 : 831 :
832 +$(call cmd,vmlinux-modpost) 832 +$(call cmd,vmlinux-modpost)
833 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ 833 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
834 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd 834 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
835 endef 835 endef
836 836
837 # vmlinux image - including updated kernel symbols 837 # vmlinux image - including updated kernel symbols
838 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE 838 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE
839 ifdef CONFIG_HEADERS_CHECK 839 ifdef CONFIG_HEADERS_CHECK
840 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 840 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
841 endif 841 endif
842 ifdef CONFIG_SAMPLES 842 ifdef CONFIG_SAMPLES
843 $(Q)$(MAKE) $(build)=samples 843 $(Q)$(MAKE) $(build)=samples
844 endif 844 endif
845 ifdef CONFIG_BUILD_DOCSRC 845 ifdef CONFIG_BUILD_DOCSRC
846 $(Q)$(MAKE) $(build)=Documentation 846 $(Q)$(MAKE) $(build)=Documentation
847 endif 847 endif
848 $(call vmlinux-modpost) 848 $(call vmlinux-modpost)
849 $(call if_changed_rule,vmlinux__) 849 $(call if_changed_rule,vmlinux__)
850 $(Q)rm -f .old_version 850 $(Q)rm -f .old_version
851 851
852 # build vmlinux.o first to catch section mismatch errors early 852 # build vmlinux.o first to catch section mismatch errors early
853 ifdef CONFIG_KALLSYMS 853 ifdef CONFIG_KALLSYMS
854 .tmp_vmlinux1: vmlinux.o 854 .tmp_vmlinux1: vmlinux.o
855 endif 855 endif
856 856
857 modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) 857 modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))
858 vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE 858 vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE
859 $(call if_changed_rule,vmlinux-modpost) 859 $(call if_changed_rule,vmlinux-modpost)
860 860
861 # The actual objects are generated when descending, 861 # The actual objects are generated when descending,
862 # make sure no implicit rule kicks in 862 # make sure no implicit rule kicks in
863 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 863 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
864 864
865 # Handle descending into subdirectories listed in $(vmlinux-dirs) 865 # Handle descending into subdirectories listed in $(vmlinux-dirs)
866 # Preset locale variables to speed up the build process. Limit locale 866 # Preset locale variables to speed up the build process. Limit locale
867 # tweaks to this spot to avoid wrong language settings when running 867 # tweaks to this spot to avoid wrong language settings when running
868 # make menuconfig etc. 868 # make menuconfig etc.
869 # Error messages still appears in the original language 869 # Error messages still appears in the original language
870 870
871 PHONY += $(vmlinux-dirs) 871 PHONY += $(vmlinux-dirs)
872 $(vmlinux-dirs): prepare scripts 872 $(vmlinux-dirs): prepare scripts
873 $(Q)$(MAKE) $(build)=$@ 873 $(Q)$(MAKE) $(build)=$@
874 874
875 # Build the kernel release string 875 # Build the kernel release string
876 # 876 #
877 # The KERNELRELEASE value built here is stored in the file 877 # The KERNELRELEASE value built here is stored in the file
878 # include/config/kernel.release, and is used when executing several 878 # include/config/kernel.release, and is used when executing several
879 # make targets, such as "make install" or "make modules_install." 879 # make targets, such as "make install" or "make modules_install."
880 # 880 #
881 # The eventual kernel release string consists of the following fields, 881 # The eventual kernel release string consists of the following fields,
882 # shown in a hierarchical format to show how smaller parts are concatenated 882 # shown in a hierarchical format to show how smaller parts are concatenated
883 # to form the larger and final value, with values coming from places like 883 # to form the larger and final value, with values coming from places like
884 # the Makefile, kernel config options, make command line options and/or 884 # the Makefile, kernel config options, make command line options and/or
885 # SCM tag information. 885 # SCM tag information.
886 # 886 #
887 # $(KERNELVERSION) 887 # $(KERNELVERSION)
888 # $(VERSION) eg, 2 888 # $(VERSION) eg, 2
889 # $(PATCHLEVEL) eg, 6 889 # $(PATCHLEVEL) eg, 6
890 # $(SUBLEVEL) eg, 18 890 # $(SUBLEVEL) eg, 18
891 # $(EXTRAVERSION) eg, -rc6 891 # $(EXTRAVERSION) eg, -rc6
892 # $(localver-full) 892 # $(localver-full)
893 # $(localver) 893 # $(localver)
894 # localversion* (files without backups, containing '~') 894 # localversion* (files without backups, containing '~')
895 # $(CONFIG_LOCALVERSION) (from kernel config setting) 895 # $(CONFIG_LOCALVERSION) (from kernel config setting)
896 # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) 896 # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
897 # ./scripts/setlocalversion (SCM tag, if one exists) 897 # ./scripts/setlocalversion (SCM tag, if one exists)
898 # $(LOCALVERSION) (from make command line if provided) 898 # $(LOCALVERSION) (from make command line if provided)
899 # 899 #
900 # Note how the final $(localver-auto) string is included *only* if the 900 # Note how the final $(localver-auto) string is included *only* if the
901 # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the 901 # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
902 # moment, only git is supported but other SCMs can edit the script 902 # moment, only git is supported but other SCMs can edit the script
903 # scripts/setlocalversion and add the appropriate checks as needed. 903 # scripts/setlocalversion and add the appropriate checks as needed.
904 904
905 pattern = ".*/localversion[^~]*" 905 pattern = ".*/localversion[^~]*"
906 string = $(shell cat /dev/null \ 906 string = $(shell cat /dev/null \
907 `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`) 907 `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`)
908 908
909 localver = $(subst $(space),, $(string) \ 909 localver = $(subst $(space),, $(string) \
910 $(patsubst "%",%,$(CONFIG_LOCALVERSION))) 910 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
911 911
912 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called 912 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
913 # and if the SCM is know a tag from the SCM is appended. 913 # and if the SCM is know a tag from the SCM is appended.
914 # The appended tag is determined by the SCM used. 914 # The appended tag is determined by the SCM used.
915 # 915 #
916 # .scmversion is used when generating rpm packages so we do not loose 916 # .scmversion is used when generating rpm packages so we do not loose
917 # the version information from the SCM when we do the build of the kernel 917 # the version information from the SCM when we do the build of the kernel
918 # from the copied source 918 # from the copied source
919 ifdef CONFIG_LOCALVERSION_AUTO 919 ifdef CONFIG_LOCALVERSION_AUTO
920 920
921 ifeq ($(wildcard .scmversion),) 921 ifeq ($(wildcard .scmversion),)
922 _localver-auto = $(shell $(CONFIG_SHELL) \ 922 _localver-auto = $(shell $(CONFIG_SHELL) \
923 $(srctree)/scripts/setlocalversion $(srctree)) 923 $(srctree)/scripts/setlocalversion $(srctree))
924 else 924 else
925 _localver-auto = $(shell cat .scmversion 2> /dev/null) 925 _localver-auto = $(shell cat .scmversion 2> /dev/null)
926 endif 926 endif
927 927
928 localver-auto = $(LOCALVERSION)$(_localver-auto) 928 localver-auto = $(LOCALVERSION)$(_localver-auto)
929 endif 929 endif
930 930
931 localver-full = $(localver)$(localver-auto) 931 localver-full = $(localver)$(localver-auto)
932 932
933 # Store (new) KERNELRELASE string in include/config/kernel.release 933 # Store (new) KERNELRELASE string in include/config/kernel.release
934 kernelrelease = $(KERNELVERSION)$(localver-full) 934 kernelrelease = $(KERNELVERSION)$(localver-full)
935 include/config/kernel.release: include/config/auto.conf FORCE 935 include/config/kernel.release: include/config/auto.conf FORCE
936 $(Q)rm -f $@ 936 $(Q)rm -f $@
937 $(Q)echo $(kernelrelease) > $@ 937 $(Q)echo $(kernelrelease) > $@
938 938
939 939
940 # Things we need to do before we recursively start building the kernel 940 # Things we need to do before we recursively start building the kernel
941 # or the modules are listed in "prepare". 941 # or the modules are listed in "prepare".
942 # A multi level approach is used. prepareN is processed before prepareN-1. 942 # A multi level approach is used. prepareN is processed before prepareN-1.
943 # archprepare is used in arch Makefiles and when processed asm symlink, 943 # archprepare is used in arch Makefiles and when processed asm symlink,
944 # version.h and scripts_basic is processed / created. 944 # version.h and scripts_basic is processed / created.
945 945
946 # Listed in dependency order 946 # Listed in dependency order
947 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 947 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
948 948
949 # prepare3 is used to check if we are building in a separate output directory, 949 # prepare3 is used to check if we are building in a separate output directory,
950 # and if so do: 950 # and if so do:
951 # 1) Check that make has not been executed in the kernel src $(srctree) 951 # 1) Check that make has not been executed in the kernel src $(srctree)
952 # 2) Create the include2 directory, used for the second asm symlink 952 # 2) Create the include2 directory, used for the second asm symlink
953 prepare3: include/config/kernel.release 953 prepare3: include/config/kernel.release
954 ifneq ($(KBUILD_SRC),) 954 ifneq ($(KBUILD_SRC),)
955 @$(kecho) ' Using $(srctree) as source for kernel' 955 @$(kecho) ' Using $(srctree) as source for kernel'
956 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 956 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
957 echo " $(srctree) is not clean, please run 'make mrproper'";\ 957 echo " $(srctree) is not clean, please run 'make mrproper'";\
958 echo " in the '$(srctree)' directory.";\ 958 echo " in the '$(srctree)' directory.";\
959 /bin/false; \ 959 /bin/false; \
960 fi; 960 fi;
961 $(Q)if [ ! -d include2 ]; then \ 961 $(Q)if [ ! -d include2 ]; then \
962 mkdir -p include2; \ 962 mkdir -p include2; \
963 ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \ 963 ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \
964 fi 964 fi
965 endif 965 endif
966 966
967 # prepare2 creates a makefile if using a separate output directory 967 # prepare2 creates a makefile if using a separate output directory
968 prepare2: prepare3 outputmakefile 968 prepare2: prepare3 outputmakefile
969 969
970 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ 970 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
971 include/asm include/config/auto.conf 971 include/asm include/config/auto.conf
972 $(cmd_crmodverdir) 972 $(cmd_crmodverdir)
973 973
974 archprepare: prepare1 scripts_basic 974 archprepare: prepare1 scripts_basic
975 975
976 prepare0: archprepare FORCE 976 prepare0: archprepare FORCE
977 $(Q)$(MAKE) $(build)=. 977 $(Q)$(MAKE) $(build)=.
978 $(Q)$(MAKE) $(build)=. missing-syscalls 978 $(Q)$(MAKE) $(build)=. missing-syscalls
979 979
980 # All the preparing.. 980 # All the preparing..
981 prepare: prepare0 981 prepare: prepare0
982 982
983 # Leave this as default for preprocessing vmlinux.lds.S, which is now 983 # Leave this as default for preprocessing vmlinux.lds.S, which is now
984 # done in arch/$(ARCH)/kernel/Makefile 984 # done in arch/$(ARCH)/kernel/Makefile
985 985
986 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) 986 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
987 987
988 # The asm symlink changes when $(ARCH) changes. 988 # The asm symlink changes when $(ARCH) changes.
989 # Detect this and ask user to run make mrproper 989 # Detect this and ask user to run make mrproper
990 # If asm is a stale symlink (point to dir that does not exist) remove it 990 # If asm is a stale symlink (point to dir that does not exist) remove it
991 define check-symlink 991 define check-symlink
992 set -e; \ 992 set -e; \
993 if [ -L include/asm ]; then \ 993 if [ -L include/asm ]; then \
994 asmlink=`readlink include/asm | cut -d '-' -f 2`; \ 994 asmlink=`readlink include/asm | cut -d '-' -f 2`; \
995 if [ "$$asmlink" != "$(SRCARCH)" ]; then \ 995 if [ "$$asmlink" != "$(SRCARCH)" ]; then \
996 echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \ 996 echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \
997 echo " set ARCH or save .config and run 'make mrproper' to fix it"; \ 997 echo " set ARCH or save .config and run 'make mrproper' to fix it"; \
998 exit 1; \ 998 exit 1; \
999 fi; \ 999 fi; \
1000 test -e $$asmlink || rm include/asm; \ 1000 test -e $$asmlink || rm include/asm; \
1001 elif [ -d include/asm ]; then \ 1001 elif [ -d include/asm ]; then \
1002 echo "ERROR: $@ is a directory but a symlink was expected";\ 1002 echo "ERROR: $@ is a directory but a symlink was expected";\
1003 exit 1; \ 1003 exit 1; \
1004 fi 1004 fi
1005 endef 1005 endef
1006 1006
1007 # We create the target directory of the symlink if it does 1007 # We create the target directory of the symlink if it does
1008 # not exist so the test in check-symlink works and we have a 1008 # not exist so the test in check-symlink works and we have a
1009 # directory for generated filesas used by some architectures. 1009 # directory for generated filesas used by some architectures.
1010 define create-symlink 1010 define create-symlink
1011 if [ ! -L include/asm ]; then \ 1011 if [ ! -L include/asm ]; then \
1012 $(kecho) ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \ 1012 $(kecho) ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \
1013 if [ ! -d include/asm-$(SRCARCH) ]; then \ 1013 if [ ! -d include/asm-$(SRCARCH) ]; then \
1014 mkdir -p include/asm-$(SRCARCH); \ 1014 mkdir -p include/asm-$(SRCARCH); \
1015 fi; \ 1015 fi; \
1016 ln -fsn asm-$(SRCARCH) $@; \ 1016 ln -fsn asm-$(SRCARCH) $@; \
1017 fi 1017 fi
1018 endef 1018 endef
1019 1019
1020 include/asm: FORCE 1020 include/asm: FORCE
1021 $(Q)$(check-symlink) 1021 $(Q)$(check-symlink)
1022 $(Q)$(create-symlink) 1022 $(Q)$(create-symlink)
1023 1023
1024 # Generate some files 1024 # Generate some files
1025 # --------------------------------------------------------------------------- 1025 # ---------------------------------------------------------------------------
1026 1026
1027 # KERNELRELEASE can change from a few different places, meaning version.h 1027 # KERNELRELEASE can change from a few different places, meaning version.h
1028 # needs to be updated, so this check is forced on all builds 1028 # needs to be updated, so this check is forced on all builds
1029 1029
1030 uts_len := 64 1030 uts_len := 64
1031 define filechk_utsrelease.h 1031 define filechk_utsrelease.h
1032 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1032 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
1033 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1033 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
1034 exit 1; \ 1034 exit 1; \
1035 fi; \ 1035 fi; \
1036 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1036 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1037 endef 1037 endef
1038 1038
1039 define filechk_version.h 1039 define filechk_version.h
1040 (echo \#define LINUX_VERSION_CODE $(shell \ 1040 (echo \#define LINUX_VERSION_CODE $(shell \
1041 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 1041 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
1042 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1042 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1043 endef 1043 endef
1044 1044
1045 include/linux/version.h: $(srctree)/Makefile FORCE 1045 include/linux/version.h: $(srctree)/Makefile FORCE
1046 $(call filechk,version.h) 1046 $(call filechk,version.h)
1047 1047
1048 include/linux/utsrelease.h: include/config/kernel.release FORCE 1048 include/linux/utsrelease.h: include/config/kernel.release FORCE
1049 $(call filechk,utsrelease.h) 1049 $(call filechk,utsrelease.h)
1050 1050
1051 PHONY += headerdep 1051 PHONY += headerdep
1052 headerdep: 1052 headerdep:
1053 $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl 1053 $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl
1054 1054
1055 # --------------------------------------------------------------------------- 1055 # ---------------------------------------------------------------------------
1056 1056
1057 PHONY += depend dep 1057 PHONY += depend dep
1058 depend dep: 1058 depend dep:
1059 @echo '*** Warning: make $@ is unnecessary now.' 1059 @echo '*** Warning: make $@ is unnecessary now.'
1060 1060
1061 # --------------------------------------------------------------------------- 1061 # ---------------------------------------------------------------------------
1062 # Firmware install 1062 # Firmware install
1063 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1063 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1064 export INSTALL_FW_PATH 1064 export INSTALL_FW_PATH
1065 1065
1066 PHONY += firmware_install 1066 PHONY += firmware_install
1067 firmware_install: FORCE 1067 firmware_install: FORCE
1068 @mkdir -p $(objtree)/firmware 1068 @mkdir -p $(objtree)/firmware
1069 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1069 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1070 1070
1071 # --------------------------------------------------------------------------- 1071 # ---------------------------------------------------------------------------
1072 # Kernel headers 1072 # Kernel headers
1073 1073
1074 #Default location for installed headers 1074 #Default location for installed headers
1075 export INSTALL_HDR_PATH = $(objtree)/usr 1075 export INSTALL_HDR_PATH = $(objtree)/usr
1076 1076
1077 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 1077 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
1078 # Find out where the Kbuild file is located to support 1078 # Find out where the Kbuild file is located to support
1079 # arch/$(ARCH)/include/asm 1079 # arch/$(ARCH)/include/asm
1080 hdr-dir = $(strip \ 1080 hdr-dir = $(strip \
1081 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild), \ 1081 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild), \
1082 arch/$(hdr-arch)/include/asm, include/asm-$(hdr-arch))) 1082 arch/$(hdr-arch)/include/asm, include/asm-$(hdr-arch)))
1083 1083
1084 # If we do an all arch process set dst to asm-$(hdr-arch) 1084 # If we do an all arch process set dst to asm-$(hdr-arch)
1085 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1085 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1086 1086
1087 PHONY += __headers 1087 PHONY += __headers
1088 __headers: include/linux/version.h scripts_basic FORCE 1088 __headers: include/linux/version.h scripts_basic FORCE
1089 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1089 $(Q)$(MAKE) $(build)=scripts scripts/unifdef
1090 1090
1091 PHONY += headers_install_all 1091 PHONY += headers_install_all
1092 headers_install_all: 1092 headers_install_all:
1093 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1093 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1094 1094
1095 PHONY += headers_install 1095 PHONY += headers_install
1096 headers_install: __headers 1096 headers_install: __headers
1097 $(if $(wildcard $(srctree)/$(hdr-dir)/Kbuild),, \ 1097 $(if $(wildcard $(srctree)/$(hdr-dir)/Kbuild),, \
1098 $(error Headers not exportable for the $(SRCARCH) architecture)) 1098 $(error Headers not exportable for the $(SRCARCH) architecture))
1099 $(Q)$(MAKE) $(hdr-inst)=include 1099 $(Q)$(MAKE) $(hdr-inst)=include
1100 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) 1100 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst)
1101 1101
1102 PHONY += headers_check_all 1102 PHONY += headers_check_all
1103 headers_check_all: headers_install_all 1103 headers_check_all: headers_install_all
1104 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1104 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1105 1105
1106 PHONY += headers_check 1106 PHONY += headers_check
1107 headers_check: headers_install 1107 headers_check: headers_install
1108 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 1108 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1
1109 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) HDRCHECK=1 1109 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) HDRCHECK=1
1110 1110
1111 # --------------------------------------------------------------------------- 1111 # ---------------------------------------------------------------------------
1112 # Modules 1112 # Modules
1113 1113
1114 ifdef CONFIG_MODULES 1114 ifdef CONFIG_MODULES
1115 1115
1116 # By default, build modules as well 1116 # By default, build modules as well
1117 1117
1118 all: modules 1118 all: modules
1119 1119
1120 # Build modules 1120 # Build modules
1121 # 1121 #
1122 # A module can be listed more than once in obj-m resulting in 1122 # A module can be listed more than once in obj-m resulting in
1123 # duplicate lines in modules.order files. Those are removed 1123 # duplicate lines in modules.order files. Those are removed
1124 # using awk while concatenating to the final file. 1124 # using awk while concatenating to the final file.
1125 1125
1126 PHONY += modules 1126 PHONY += modules
1127 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) 1127 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
1128 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1128 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1129 @$(kecho) ' Building modules, stage 2.'; 1129 @$(kecho) ' Building modules, stage 2.';
1130 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1130 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1131 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1131 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1132 1132
1133 1133
1134 # Target to prepare building external modules 1134 # Target to prepare building external modules
1135 PHONY += modules_prepare 1135 PHONY += modules_prepare
1136 modules_prepare: prepare scripts 1136 modules_prepare: prepare scripts
1137 1137
1138 # Target to install modules 1138 # Target to install modules
1139 PHONY += modules_install 1139 PHONY += modules_install
1140 modules_install: _modinst_ _modinst_post 1140 modules_install: _modinst_ _modinst_post
1141 1141
1142 PHONY += _modinst_ 1142 PHONY += _modinst_
1143 _modinst_: 1143 _modinst_:
1144 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ 1144 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
1145 echo "Warning: you may need to install module-init-tools"; \ 1145 echo "Warning: you may need to install module-init-tools"; \
1146 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ 1146 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
1147 sleep 1; \ 1147 sleep 1; \
1148 fi 1148 fi
1149 @rm -rf $(MODLIB)/kernel 1149 @rm -rf $(MODLIB)/kernel
1150 @rm -f $(MODLIB)/source 1150 @rm -f $(MODLIB)/source
1151 @mkdir -p $(MODLIB)/kernel 1151 @mkdir -p $(MODLIB)/kernel
1152 @ln -s $(srctree) $(MODLIB)/source 1152 @ln -s $(srctree) $(MODLIB)/source
1153 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1153 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1154 rm -f $(MODLIB)/build ; \ 1154 rm -f $(MODLIB)/build ; \
1155 ln -s $(objtree) $(MODLIB)/build ; \ 1155 ln -s $(objtree) $(MODLIB)/build ; \
1156 fi 1156 fi
1157 @cp -f $(objtree)/modules.order $(MODLIB)/ 1157 @cp -f $(objtree)/modules.order $(MODLIB)/
1158 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1158 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1159 1159
1160 # This depmod is only for convenience to give the initial 1160 # This depmod is only for convenience to give the initial
1161 # boot a modules.dep even before / is mounted read-write. However the 1161 # boot a modules.dep even before / is mounted read-write. However the
1162 # boot script depmod is the master version. 1162 # boot script depmod is the master version.
1163 PHONY += _modinst_post 1163 PHONY += _modinst_post
1164 _modinst_post: _modinst_ 1164 _modinst_post: _modinst_
1165 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1165 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1166 $(call cmd,depmod) 1166 $(call cmd,depmod)
1167 1167
1168 else # CONFIG_MODULES 1168 else # CONFIG_MODULES
1169 1169
1170 # Modules not configured 1170 # Modules not configured
1171 # --------------------------------------------------------------------------- 1171 # ---------------------------------------------------------------------------
1172 1172
1173 modules modules_install: FORCE 1173 modules modules_install: FORCE
1174 @echo 1174 @echo
1175 @echo "The present kernel configuration has modules disabled." 1175 @echo "The present kernel configuration has modules disabled."
1176 @echo "Type 'make config' and enable loadable module support." 1176 @echo "Type 'make config' and enable loadable module support."
1177 @echo "Then build a kernel with module support enabled." 1177 @echo "Then build a kernel with module support enabled."
1178 @echo 1178 @echo
1179 @exit 1 1179 @exit 1
1180 1180
1181 endif # CONFIG_MODULES 1181 endif # CONFIG_MODULES
1182 1182
1183 ### 1183 ###
1184 # Cleaning is done on three levels. 1184 # Cleaning is done on three levels.
1185 # make clean Delete most generated files 1185 # make clean Delete most generated files
1186 # Leave enough to build external modules 1186 # Leave enough to build external modules
1187 # make mrproper Delete the current configuration, and all generated files 1187 # make mrproper Delete the current configuration, and all generated files
1188 # make distclean Remove editor backup files, patch leftover files and the like 1188 # make distclean Remove editor backup files, patch leftover files and the like
1189 1189
1190 # Directories & files removed with 'make clean' 1190 # Directories & files removed with 'make clean'
1191 CLEAN_DIRS += $(MODVERDIR) 1191 CLEAN_DIRS += $(MODVERDIR)
1192 CLEAN_FILES += vmlinux System.map \ 1192 CLEAN_FILES += vmlinux System.map \
1193 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 1193 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
1194 1194
1195 # Directories & files removed with 'make mrproper' 1195 # Directories & files removed with 'make mrproper'
1196 MRPROPER_DIRS += include/config include2 usr/include include/generated 1196 MRPROPER_DIRS += include/config include2 usr/include include/generated
1197 MRPROPER_FILES += .config .config.old include/asm .version .old_version \ 1197 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
1198 include/linux/autoconf.h include/linux/version.h \ 1198 include/linux/autoconf.h include/linux/version.h \
1199 include/linux/utsrelease.h \ 1199 include/linux/utsrelease.h \
1200 include/linux/bounds.h include/asm*/asm-offsets.h \ 1200 include/linux/bounds.h include/asm*/asm-offsets.h \
1201 Module.symvers Module.markers tags TAGS cscope* 1201 Module.symvers Module.markers tags TAGS cscope*
1202 1202
1203 # clean - Delete most, but leave enough to build external modules 1203 # clean - Delete most, but leave enough to build external modules
1204 # 1204 #
1205 clean: rm-dirs := $(CLEAN_DIRS) 1205 clean: rm-dirs := $(CLEAN_DIRS)
1206 clean: rm-files := $(CLEAN_FILES) 1206 clean: rm-files := $(CLEAN_FILES)
1207 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation) 1207 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation)
1208 1208
1209 PHONY += $(clean-dirs) clean archclean 1209 PHONY += $(clean-dirs) clean archclean
1210 $(clean-dirs): 1210 $(clean-dirs):
1211 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1211 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1212 1212
1213 clean: archclean $(clean-dirs) 1213 clean: archclean $(clean-dirs)
1214 $(call cmd,rmdirs) 1214 $(call cmd,rmdirs)
1215 $(call cmd,rmfiles) 1215 $(call cmd,rmfiles)
1216 @find . $(RCS_FIND_IGNORE) \ 1216 @find . $(RCS_FIND_IGNORE) \
1217 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1217 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1218 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1218 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1219 -o -name '*.symtypes' -o -name 'modules.order' \ 1219 -o -name '*.symtypes' -o -name 'modules.order' \
1220 -o -name 'Module.markers' -o -name '.tmp_*.o.*' \ 1220 -o -name 'Module.markers' -o -name '.tmp_*.o.*' \
1221 -o -name '*.gcno' \) -type f -print | xargs rm -f 1221 -o -name '*.gcno' \) -type f -print | xargs rm -f
1222 1222
1223 # mrproper - Delete all generated files, including .config 1223 # mrproper - Delete all generated files, including .config
1224 # 1224 #
1225 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1225 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1226 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1226 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1227 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1227 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1228 1228
1229 PHONY += $(mrproper-dirs) mrproper archmrproper 1229 PHONY += $(mrproper-dirs) mrproper archmrproper
1230 $(mrproper-dirs): 1230 $(mrproper-dirs):
1231 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1231 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1232 1232
1233 mrproper: clean archmrproper $(mrproper-dirs) 1233 mrproper: clean archmrproper $(mrproper-dirs)
1234 $(call cmd,rmdirs) 1234 $(call cmd,rmdirs)
1235 $(call cmd,rmfiles) 1235 $(call cmd,rmfiles)
1236 1236
1237 # distclean 1237 # distclean
1238 # 1238 #
1239 PHONY += distclean 1239 PHONY += distclean
1240 1240
1241 distclean: mrproper 1241 distclean: mrproper
1242 @find $(srctree) $(RCS_FIND_IGNORE) \ 1242 @find $(srctree) $(RCS_FIND_IGNORE) \
1243 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1243 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1244 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1244 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1245 -o -name '.*.rej' -o -size 0 \ 1245 -o -name '.*.rej' -o -size 0 \
1246 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 1246 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1247 -type f -print | xargs rm -f 1247 -type f -print | xargs rm -f
1248 1248
1249 1249
1250 # Packaging of the kernel to various formats 1250 # Packaging of the kernel to various formats
1251 # --------------------------------------------------------------------------- 1251 # ---------------------------------------------------------------------------
1252 # rpm target kept for backward compatibility 1252 # rpm target kept for backward compatibility
1253 package-dir := $(srctree)/scripts/package 1253 package-dir := $(srctree)/scripts/package
1254 1254
1255 %pkg: include/config/kernel.release FORCE 1255 %pkg: include/config/kernel.release FORCE
1256 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1256 $(Q)$(MAKE) $(build)=$(package-dir) $@
1257 rpm: include/config/kernel.release FORCE 1257 rpm: include/config/kernel.release FORCE
1258 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1258 $(Q)$(MAKE) $(build)=$(package-dir) $@
1259 1259
1260 1260
1261 # Brief documentation of the typical targets used 1261 # Brief documentation of the typical targets used
1262 # --------------------------------------------------------------------------- 1262 # ---------------------------------------------------------------------------
1263 1263
1264 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1264 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1265 boards := $(notdir $(boards)) 1265 boards := $(notdir $(boards))
1266 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1266 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1267 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1267 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1268 1268
1269 help: 1269 help:
1270 @echo 'Cleaning targets:' 1270 @echo 'Cleaning targets:'
1271 @echo ' clean - Remove most generated files but keep the config and' 1271 @echo ' clean - Remove most generated files but keep the config and'
1272 @echo ' enough build support to build external modules' 1272 @echo ' enough build support to build external modules'
1273 @echo ' mrproper - Remove all generated files + config + various backup files' 1273 @echo ' mrproper - Remove all generated files + config + various backup files'
1274 @echo ' distclean - mrproper + remove editor backup and patch files' 1274 @echo ' distclean - mrproper + remove editor backup and patch files'
1275 @echo '' 1275 @echo ''
1276 @echo 'Configuration targets:' 1276 @echo 'Configuration targets:'
1277 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1277 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1278 @echo '' 1278 @echo ''
1279 @echo 'Other generic targets:' 1279 @echo 'Other generic targets:'
1280 @echo ' all - Build all targets marked with [*]' 1280 @echo ' all - Build all targets marked with [*]'
1281 @echo '* vmlinux - Build the bare kernel' 1281 @echo '* vmlinux - Build the bare kernel'
1282 @echo '* modules - Build all modules' 1282 @echo '* modules - Build all modules'
1283 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1283 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1284 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1284 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1285 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1285 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1286 @echo ' dir/ - Build all files in dir and below' 1286 @echo ' dir/ - Build all files in dir and below'
1287 @echo ' dir/file.[ois] - Build specified target only' 1287 @echo ' dir/file.[ois] - Build specified target only'
1288 @echo ' dir/file.ko - Build module including final link' 1288 @echo ' dir/file.ko - Build module including final link'
1289 @echo ' modules_prepare - Set up for building external modules' 1289 @echo ' modules_prepare - Set up for building external modules'
1290 @echo ' tags/TAGS - Generate tags file for editors' 1290 @echo ' tags/TAGS - Generate tags file for editors'
1291 @echo ' cscope - Generate cscope index' 1291 @echo ' cscope - Generate cscope index'
1292 @echo ' kernelrelease - Output the release version string' 1292 @echo ' kernelrelease - Output the release version string'
1293 @echo ' kernelversion - Output the version stored in Makefile' 1293 @echo ' kernelversion - Output the version stored in Makefile'
1294 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1294 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1295 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1295 echo ' (default: $(INSTALL_HDR_PATH))'; \
1296 echo '' 1296 echo ''
1297 @echo 'Static analysers' 1297 @echo 'Static analysers'
1298 @echo ' checkstack - Generate a list of stack hogs' 1298 @echo ' checkstack - Generate a list of stack hogs'
1299 @echo ' namespacecheck - Name space analysis on compiled kernel' 1299 @echo ' namespacecheck - Name space analysis on compiled kernel'
1300 @echo ' versioncheck - Sanity check on version.h usage' 1300 @echo ' versioncheck - Sanity check on version.h usage'
1301 @echo ' includecheck - Check for duplicate included header files' 1301 @echo ' includecheck - Check for duplicate included header files'
1302 @echo ' export_report - List the usages of all exported symbols' 1302 @echo ' export_report - List the usages of all exported symbols'
1303 @echo ' headers_check - Sanity check on exported headers' 1303 @echo ' headers_check - Sanity check on exported headers'
1304 @echo ' headerdep - Detect inclusion cycles in headers'; \ 1304 @echo ' headerdep - Detect inclusion cycles in headers'; \
1305 echo '' 1305 echo ''
1306 @echo 'Kernel packaging:' 1306 @echo 'Kernel packaging:'
1307 @$(MAKE) $(build)=$(package-dir) help 1307 @$(MAKE) $(build)=$(package-dir) help
1308 @echo '' 1308 @echo ''
1309 @echo 'Documentation targets:' 1309 @echo 'Documentation targets:'
1310 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1310 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1311 @echo '' 1311 @echo ''
1312 @echo 'Architecture specific targets ($(SRCARCH)):' 1312 @echo 'Architecture specific targets ($(SRCARCH)):'
1313 @$(if $(archhelp),$(archhelp),\ 1313 @$(if $(archhelp),$(archhelp),\
1314 echo ' No architecture specific help defined for $(SRCARCH)') 1314 echo ' No architecture specific help defined for $(SRCARCH)')
1315 @echo '' 1315 @echo ''
1316 @$(if $(boards), \ 1316 @$(if $(boards), \
1317 $(foreach b, $(boards), \ 1317 $(foreach b, $(boards), \
1318 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1318 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1319 echo '') 1319 echo '')
1320 @$(if $(board-dirs), \ 1320 @$(if $(board-dirs), \
1321 $(foreach b, $(board-dirs), \ 1321 $(foreach b, $(board-dirs), \
1322 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1322 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1323 printf " %-16s - Show all of the above\\n" help-boards; \ 1323 printf " %-16s - Show all of the above\\n" help-boards; \
1324 echo '') 1324 echo '')
1325 1325
1326 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1326 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1327 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1327 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1328 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1328 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1329 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1329 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1330 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1330 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1331 @echo '' 1331 @echo ''
1332 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1332 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1333 @echo 'For further info see the ./README file' 1333 @echo 'For further info see the ./README file'
1334 1334
1335 1335
1336 help-board-dirs := $(addprefix help-,$(board-dirs)) 1336 help-board-dirs := $(addprefix help-,$(board-dirs))
1337 1337
1338 help-boards: $(help-board-dirs) 1338 help-boards: $(help-board-dirs)
1339 1339
1340 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) 1340 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1341 1341
1342 $(help-board-dirs): help-%: 1342 $(help-board-dirs): help-%:
1343 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1343 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1344 @$(if $(boards-per-dir), \ 1344 @$(if $(boards-per-dir), \
1345 $(foreach b, $(boards-per-dir), \ 1345 $(foreach b, $(boards-per-dir), \
1346 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1346 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1347 echo '') 1347 echo '')
1348 1348
1349 1349
1350 # Documentation targets 1350 # Documentation targets
1351 # --------------------------------------------------------------------------- 1351 # ---------------------------------------------------------------------------
1352 %docs: scripts_basic FORCE 1352 %docs: scripts_basic FORCE
1353 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1353 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1354 1354
1355 else # KBUILD_EXTMOD 1355 else # KBUILD_EXTMOD
1356 1356
1357 ### 1357 ###
1358 # External module support. 1358 # External module support.
1359 # When building external modules the kernel used as basis is considered 1359 # When building external modules the kernel used as basis is considered
1360 # read-only, and no consistency checks are made and the make 1360 # read-only, and no consistency checks are made and the make
1361 # system is not used on the basis kernel. If updates are required 1361 # system is not used on the basis kernel. If updates are required
1362 # in the basis kernel ordinary make commands (without M=...) must 1362 # in the basis kernel ordinary make commands (without M=...) must
1363 # be used. 1363 # be used.
1364 # 1364 #
1365 # The following are the only valid targets when building external 1365 # The following are the only valid targets when building external
1366 # modules. 1366 # modules.
1367 # make M=dir clean Delete all automatically generated files 1367 # make M=dir clean Delete all automatically generated files
1368 # make M=dir modules Make all modules in specified dir 1368 # make M=dir modules Make all modules in specified dir
1369 # make M=dir Same as 'make M=dir modules' 1369 # make M=dir Same as 'make M=dir modules'
1370 # make M=dir modules_install 1370 # make M=dir modules_install
1371 # Install the modules built in the module directory 1371 # Install the modules built in the module directory
1372 # Assumes install directory is already created 1372 # Assumes install directory is already created
1373 1373
1374 # We are always building modules 1374 # We are always building modules
1375 KBUILD_MODULES := 1 1375 KBUILD_MODULES := 1
1376 PHONY += crmodverdir 1376 PHONY += crmodverdir
1377 crmodverdir: 1377 crmodverdir:
1378 $(cmd_crmodverdir) 1378 $(cmd_crmodverdir)
1379 1379
1380 PHONY += $(objtree)/Module.symvers 1380 PHONY += $(objtree)/Module.symvers
1381 $(objtree)/Module.symvers: 1381 $(objtree)/Module.symvers:
1382 @test -e $(objtree)/Module.symvers || ( \ 1382 @test -e $(objtree)/Module.symvers || ( \
1383 echo; \ 1383 echo; \
1384 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1384 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1385 echo " is missing; modules will have no dependencies and modversions."; \ 1385 echo " is missing; modules will have no dependencies and modversions."; \
1386 echo ) 1386 echo )
1387 1387
1388 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1388 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1389 PHONY += $(module-dirs) modules 1389 PHONY += $(module-dirs) modules
1390 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1390 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1391 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1391 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1392 1392
1393 modules: $(module-dirs) 1393 modules: $(module-dirs)
1394 @$(kecho) ' Building modules, stage 2.'; 1394 @$(kecho) ' Building modules, stage 2.';
1395 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1395 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1396 1396
1397 PHONY += modules_install 1397 PHONY += modules_install
1398 modules_install: _emodinst_ _emodinst_post 1398 modules_install: _emodinst_ _emodinst_post
1399 1399
1400 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1400 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1401 PHONY += _emodinst_ 1401 PHONY += _emodinst_
1402 _emodinst_: 1402 _emodinst_:
1403 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1403 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1404 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1404 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1405 1405
1406 PHONY += _emodinst_post 1406 PHONY += _emodinst_post
1407 _emodinst_post: _emodinst_ 1407 _emodinst_post: _emodinst_
1408 $(call cmd,depmod) 1408 $(call cmd,depmod)
1409 1409
1410 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1410 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1411 1411
1412 PHONY += $(clean-dirs) clean 1412 PHONY += $(clean-dirs) clean
1413 $(clean-dirs): 1413 $(clean-dirs):
1414 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1414 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1415 1415
1416 clean: rm-dirs := $(MODVERDIR) 1416 clean: rm-dirs := $(MODVERDIR)
1417 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \ 1417 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \
1418 $(KBUILD_EXTMOD)/Module.markers \ 1418 $(KBUILD_EXTMOD)/Module.markers \
1419 $(KBUILD_EXTMOD)/modules.order 1419 $(KBUILD_EXTMOD)/modules.order
1420 clean: $(clean-dirs) 1420 clean: $(clean-dirs)
1421 $(call cmd,rmdirs) 1421 $(call cmd,rmdirs)
1422 $(call cmd,rmfiles) 1422 $(call cmd,rmfiles)
1423 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ 1423 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1424 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1424 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1425 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1425 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1426 -o -name '*.gcno' \) -type f -print | xargs rm -f 1426 -o -name '*.gcno' \) -type f -print | xargs rm -f
1427 1427
1428 help: 1428 help:
1429 @echo ' Building external modules.' 1429 @echo ' Building external modules.'
1430 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1430 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1431 @echo '' 1431 @echo ''
1432 @echo ' modules - default target, build the module(s)' 1432 @echo ' modules - default target, build the module(s)'
1433 @echo ' modules_install - install the module' 1433 @echo ' modules_install - install the module'
1434 @echo ' clean - remove generated files in module directory only' 1434 @echo ' clean - remove generated files in module directory only'
1435 @echo '' 1435 @echo ''
1436 1436
1437 # Dummies... 1437 # Dummies...
1438 PHONY += prepare scripts 1438 PHONY += prepare scripts
1439 prepare: ; 1439 prepare: ;
1440 scripts: ; 1440 scripts: ;
1441 endif # KBUILD_EXTMOD 1441 endif # KBUILD_EXTMOD
1442 1442
1443 # Generate tags for editors 1443 # Generate tags for editors
1444 # --------------------------------------------------------------------------- 1444 # ---------------------------------------------------------------------------
1445 quiet_cmd_tags = GEN $@ 1445 quiet_cmd_tags = GEN $@
1446 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1446 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1447 1447
1448 tags TAGS cscope: FORCE 1448 tags TAGS cscope: FORCE
1449 $(call cmd,tags) 1449 $(call cmd,tags)
1450 1450
1451 # Scripts to check various things for consistency 1451 # Scripts to check various things for consistency
1452 # --------------------------------------------------------------------------- 1452 # ---------------------------------------------------------------------------
1453 1453
1454 includecheck: 1454 includecheck:
1455 find * $(RCS_FIND_IGNORE) \ 1455 find * $(RCS_FIND_IGNORE) \
1456 -name '*.[hcS]' -type f -print | sort \ 1456 -name '*.[hcS]' -type f -print | sort \
1457 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1457 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1458 1458
1459 versioncheck: 1459 versioncheck:
1460 find * $(RCS_FIND_IGNORE) \ 1460 find * $(RCS_FIND_IGNORE) \
1461 -name '*.[hcS]' -type f -print | sort \ 1461 -name '*.[hcS]' -type f -print | sort \
1462 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1462 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1463 1463
1464 namespacecheck: 1464 namespacecheck:
1465 $(PERL) $(srctree)/scripts/namespace.pl 1465 $(PERL) $(srctree)/scripts/namespace.pl
1466 1466
1467 export_report: 1467 export_report:
1468 $(PERL) $(srctree)/scripts/export_report.pl 1468 $(PERL) $(srctree)/scripts/export_report.pl
1469 1469
1470 endif #ifeq ($(config-targets),1) 1470 endif #ifeq ($(config-targets),1)
1471 endif #ifeq ($(mixed-targets),1) 1471 endif #ifeq ($(mixed-targets),1)
1472 1472
1473 PHONY += checkstack kernelrelease kernelversion 1473 PHONY += checkstack kernelrelease kernelversion
1474 1474
1475 # UML needs a little special treatment here. It wants to use the host 1475 # UML needs a little special treatment here. It wants to use the host
1476 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1476 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1477 # else wants $(ARCH), including people doing cross-builds, which means 1477 # else wants $(ARCH), including people doing cross-builds, which means
1478 # that $(SUBARCH) doesn't work here. 1478 # that $(SUBARCH) doesn't work here.
1479 ifeq ($(ARCH), um) 1479 ifeq ($(ARCH), um)
1480 CHECKSTACK_ARCH := $(SUBARCH) 1480 CHECKSTACK_ARCH := $(SUBARCH)
1481 else 1481 else
1482 CHECKSTACK_ARCH := $(ARCH) 1482 CHECKSTACK_ARCH := $(ARCH)
1483 endif 1483 endif
1484 checkstack: 1484 checkstack:
1485 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1485 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1486 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1486 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1487 1487
1488 kernelrelease: 1488 kernelrelease:
1489 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ 1489 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
1490 $(error kernelrelease not valid - run 'make prepare' to update it)) 1490 $(error kernelrelease not valid - run 'make prepare' to update it))
1491 kernelversion: 1491 kernelversion:
1492 @echo $(KERNELVERSION) 1492 @echo $(KERNELVERSION)
1493 1493
1494 # Single targets 1494 # Single targets
1495 # --------------------------------------------------------------------------- 1495 # ---------------------------------------------------------------------------
1496 # Single targets are compatible with: 1496 # Single targets are compatible with:
1497 # - build with mixed source and output 1497 # - build with mixed source and output
1498 # - build with separate output dir 'make O=...' 1498 # - build with separate output dir 'make O=...'
1499 # - external modules 1499 # - external modules
1500 # 1500 #
1501 # target-dir => where to store outputfile 1501 # target-dir => where to store outputfile
1502 # build-dir => directory in kernel source tree to use 1502 # build-dir => directory in kernel source tree to use
1503 1503
1504 ifeq ($(KBUILD_EXTMOD),) 1504 ifeq ($(KBUILD_EXTMOD),)
1505 build-dir = $(patsubst %/,%,$(dir $@)) 1505 build-dir = $(patsubst %/,%,$(dir $@))
1506 target-dir = $(dir $@) 1506 target-dir = $(dir $@)
1507 else 1507 else
1508 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1508 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1509 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1509 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1510 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1510 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1511 endif 1511 endif
1512 1512
1513 %.s: %.c prepare scripts FORCE 1513 %.s: %.c prepare scripts FORCE
1514 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1514 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1515 %.i: %.c prepare scripts FORCE 1515 %.i: %.c prepare scripts FORCE
1516 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1516 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1517 %.o: %.c prepare scripts FORCE 1517 %.o: %.c prepare scripts FORCE
1518 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1518 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1519 %.lst: %.c prepare scripts FORCE 1519 %.lst: %.c prepare scripts FORCE
1520 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1520 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1521 %.s: %.S prepare scripts FORCE 1521 %.s: %.S prepare scripts FORCE
1522 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1522 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1523 %.o: %.S prepare scripts FORCE 1523 %.o: %.S prepare scripts FORCE
1524 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1524 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1525 %.symtypes: %.c prepare scripts FORCE 1525 %.symtypes: %.c prepare scripts FORCE
1526 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1526 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1527 1527
1528 # Modules 1528 # Modules
1529 /: prepare scripts FORCE 1529 /: prepare scripts FORCE
1530 $(cmd_crmodverdir) 1530 $(cmd_crmodverdir)
1531 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1531 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1532 $(build)=$(build-dir) 1532 $(build)=$(build-dir)
1533 %/: prepare scripts FORCE 1533 %/: prepare scripts FORCE
1534 $(cmd_crmodverdir) 1534 $(cmd_crmodverdir)
1535 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1535 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1536 $(build)=$(build-dir) 1536 $(build)=$(build-dir)
1537 %.ko: prepare scripts FORCE 1537 %.ko: prepare scripts FORCE
1538 $(cmd_crmodverdir) 1538 $(cmd_crmodverdir)
1539 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1539 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1540 $(build)=$(build-dir) $(@:.ko=.o) 1540 $(build)=$(build-dir) $(@:.ko=.o)
1541 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1541 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1542 1542
1543 # FIXME Should go into a make.lib or something 1543 # FIXME Should go into a make.lib or something
1544 # =========================================================================== 1544 # ===========================================================================
1545 1545
1546 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1546 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1547 cmd_rmdirs = rm -rf $(rm-dirs) 1547 cmd_rmdirs = rm -rf $(rm-dirs)
1548 1548
1549 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1549 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1550 cmd_rmfiles = rm -f $(rm-files) 1550 cmd_rmfiles = rm -f $(rm-files)
1551 1551
1552 # Run depmod only if we have System.map and depmod is executable 1552 # Run depmod only if we have System.map and depmod is executable
1553 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1553 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1554 cmd_depmod = \ 1554 cmd_depmod = \
1555 if [ -r System.map -a -x $(DEPMOD) ]; then \ 1555 if [ -r System.map -a -x $(DEPMOD) ]; then \
1556 $(DEPMOD) -ae -F System.map \ 1556 $(DEPMOD) -ae -F System.map \
1557 $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ 1557 $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \
1558 $(KERNELRELEASE); \ 1558 $(KERNELRELEASE); \
1559 fi 1559 fi
1560 1560
1561 # Create temporary dir for module support files 1561 # Create temporary dir for module support files
1562 # clean it up only when building all modules 1562 # clean it up only when building all modules
1563 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1563 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1564 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1564 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1565 1565
1566 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ 1566 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
1567 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ 1567 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \
1568 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) 1568 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1569 1569
1570 quiet_cmd_as_o_S = AS $@ 1570 quiet_cmd_as_o_S = AS $@
1571 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 1571 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1572 1572
1573 # read all saved command lines 1573 # read all saved command lines
1574 1574
1575 targets := $(wildcard $(sort $(targets))) 1575 targets := $(wildcard $(sort $(targets)))
1576 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1576 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1577 1577
1578 ifneq ($(cmd_files),) 1578 ifneq ($(cmd_files),)
1579 $(cmd_files): ; # Do not try to update included dependency files 1579 $(cmd_files): ; # Do not try to update included dependency files
1580 include $(cmd_files) 1580 include $(cmd_files)
1581 endif 1581 endif
1582 1582
1583 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1583 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1584 # Usage: 1584 # Usage:
1585 # $(Q)$(MAKE) $(clean)=dir 1585 # $(Q)$(MAKE) $(clean)=dir
1586 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 1586 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1587 1587
1588 endif # skip-makefile 1588 endif # skip-makefile
1589 1589
1590 PHONY += FORCE 1590 PHONY += FORCE
1591 FORCE: 1591 FORCE:
1592 1592
1593 # Declare the contents of the .PHONY variable as phony. We keep that 1593 # Declare the contents of the .PHONY variable as phony. We keep that
1594 # information in a variable so we can use it in if_changed and friends. 1594 # information in a variable so we can use it in if_changed and friends.
1595 .PHONY: $(PHONY) 1595 .PHONY: $(PHONY)
1596 1596