Doug / smarc-fsl-linux-kernel

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Commit b9a33cebac70d6f67a769ce8d4078fee2b254ada

Authored by Linus Torvalds
1 parent 13f939b5d3
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

Linux v2.6.16-rc5

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 = 16 3 SUBLEVEL = 16
4 EXTRAVERSION =-rc4 4 EXTRAVERSION =-rc5
5 NAME=Sliding Snow Leopard 5 NAME=Sliding Snow Leopard
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 print "Entering directory ..." 13 # Do not print "Entering directory ..."
14 MAKEFLAGS += --no-print-directory 14 MAKEFLAGS += --no-print-directory
15 15
16 # We are using a recursive build, so we need to do a little thinking 16 # We are using a recursive build, so we need to do a little thinking
17 # to get the ordering right. 17 # to get the ordering right.
18 # 18 #
19 # Most importantly: sub-Makefiles should only ever modify files in 19 # Most importantly: sub-Makefiles should only ever modify files in
20 # their own directory. If in some directory we have a dependency on 20 # their own directory. If in some directory we have a dependency on
21 # a file in another dir (which doesn't happen often, but it's often 21 # a file in another dir (which doesn't happen often, but it's often
22 # unavoidable when linking the built-in.o targets which finally 22 # unavoidable when linking the built-in.o targets which finally
23 # turn into vmlinux), we will call a sub make in that other dir, and 23 # turn into vmlinux), we will call a sub make in that other dir, and
24 # after that we are sure that everything which is in that other dir 24 # after that we are sure that everything which is in that other dir
25 # is now up to date. 25 # is now up to date.
26 # 26 #
27 # The only cases where we need to modify files which have global 27 # The only cases where we need to modify files which have global
28 # effects are thus separated out and done before the recursive 28 # effects are thus separated out and done before the recursive
29 # descending is started. They are now explicitly listed as the 29 # descending is started. They are now explicitly listed as the
30 # prepare rule. 30 # prepare rule.
31 31
32 # To put more focus on warnings, be less verbose as default 32 # To put more focus on warnings, be less verbose as default
33 # Use 'make V=1' to see the full commands 33 # Use 'make V=1' to see the full commands
34 34
35 ifdef V 35 ifdef V
36 ifeq ("$(origin V)", "command line") 36 ifeq ("$(origin V)", "command line")
37 KBUILD_VERBOSE = $(V) 37 KBUILD_VERBOSE = $(V)
38 endif 38 endif
39 endif 39 endif
40 ifndef KBUILD_VERBOSE 40 ifndef KBUILD_VERBOSE
41 KBUILD_VERBOSE = 0 41 KBUILD_VERBOSE = 0
42 endif 42 endif
43 43
44 # Call sparse as part of compilation of C files 44 # Call sparse as part of compilation of C files
45 # Use 'make C=1' to enable sparse checking 45 # Use 'make C=1' to enable sparse checking
46 46
47 ifdef C 47 ifdef C
48 ifeq ("$(origin C)", "command line") 48 ifeq ("$(origin C)", "command line")
49 KBUILD_CHECKSRC = $(C) 49 KBUILD_CHECKSRC = $(C)
50 endif 50 endif
51 endif 51 endif
52 ifndef KBUILD_CHECKSRC 52 ifndef KBUILD_CHECKSRC
53 KBUILD_CHECKSRC = 0 53 KBUILD_CHECKSRC = 0
54 endif 54 endif
55 55
56 # Use make M=dir to specify directory of external module to build 56 # Use make M=dir to specify directory of external module to build
57 # Old syntax make ... SUBDIRS=$PWD is still supported 57 # Old syntax make ... SUBDIRS=$PWD is still supported
58 # Setting the environment variable KBUILD_EXTMOD take precedence 58 # Setting the environment variable KBUILD_EXTMOD take precedence
59 ifdef SUBDIRS 59 ifdef SUBDIRS
60 KBUILD_EXTMOD ?= $(SUBDIRS) 60 KBUILD_EXTMOD ?= $(SUBDIRS)
61 endif 61 endif
62 ifdef M 62 ifdef M
63 ifeq ("$(origin M)", "command line") 63 ifeq ("$(origin M)", "command line")
64 KBUILD_EXTMOD := $(M) 64 KBUILD_EXTMOD := $(M)
65 endif 65 endif
66 endif 66 endif
67 67
68 68
69 # kbuild supports saving output files in a separate directory. 69 # kbuild supports saving output files in a separate directory.
70 # To locate output files in a separate directory two syntaxes are supported. 70 # To locate output files in a separate directory two syntaxes are supported.
71 # In both cases the working directory must be the root of the kernel src. 71 # In both cases the working directory must be the root of the kernel src.
72 # 1) O= 72 # 1) O=
73 # Use "make O=dir/to/store/output/files/" 73 # Use "make O=dir/to/store/output/files/"
74 # 74 #
75 # 2) Set KBUILD_OUTPUT 75 # 2) Set KBUILD_OUTPUT
76 # Set the environment variable KBUILD_OUTPUT to point to the directory 76 # Set the environment variable KBUILD_OUTPUT to point to the directory
77 # where the output files shall be placed. 77 # where the output files shall be placed.
78 # export KBUILD_OUTPUT=dir/to/store/output/files/ 78 # export KBUILD_OUTPUT=dir/to/store/output/files/
79 # make 79 # make
80 # 80 #
81 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 81 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
82 # variable. 82 # variable.
83 83
84 84
85 # KBUILD_SRC is set on invocation of make in OBJ directory 85 # KBUILD_SRC is set on invocation of make in OBJ directory
86 # KBUILD_SRC is not intended to be used by the regular user (for now) 86 # KBUILD_SRC is not intended to be used by the regular user (for now)
87 ifeq ($(KBUILD_SRC),) 87 ifeq ($(KBUILD_SRC),)
88 88
89 # OK, Make called in directory where kernel src resides 89 # OK, Make called in directory where kernel src resides
90 # Do we want to locate output files in a separate directory? 90 # Do we want to locate output files in a separate directory?
91 ifdef O 91 ifdef O
92 ifeq ("$(origin O)", "command line") 92 ifeq ("$(origin O)", "command line")
93 KBUILD_OUTPUT := $(O) 93 KBUILD_OUTPUT := $(O)
94 endif 94 endif
95 endif 95 endif
96 96
97 # That's our default target when none is given on the command line 97 # That's our default target when none is given on the command line
98 .PHONY: _all 98 .PHONY: _all
99 _all: 99 _all:
100 100
101 ifneq ($(KBUILD_OUTPUT),) 101 ifneq ($(KBUILD_OUTPUT),)
102 # Invoke a second make in the output directory, passing relevant variables 102 # Invoke a second make in the output directory, passing relevant variables
103 # check that the output directory actually exists 103 # check that the output directory actually exists
104 saved-output := $(KBUILD_OUTPUT) 104 saved-output := $(KBUILD_OUTPUT)
105 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 105 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
106 $(if $(KBUILD_OUTPUT),, \ 106 $(if $(KBUILD_OUTPUT),, \
107 $(error output directory "$(saved-output)" does not exist)) 107 $(error output directory "$(saved-output)" does not exist))
108 108
109 .PHONY: $(MAKECMDGOALS) 109 .PHONY: $(MAKECMDGOALS)
110 110
111 $(filter-out _all,$(MAKECMDGOALS)) _all: 111 $(filter-out _all,$(MAKECMDGOALS)) _all:
112 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 112 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
113 KBUILD_SRC=$(CURDIR) \ 113 KBUILD_SRC=$(CURDIR) \
114 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ 114 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
115 115
116 # Leave processing to above invocation of make 116 # Leave processing to above invocation of make
117 skip-makefile := 1 117 skip-makefile := 1
118 endif # ifneq ($(KBUILD_OUTPUT),) 118 endif # ifneq ($(KBUILD_OUTPUT),)
119 endif # ifeq ($(KBUILD_SRC),) 119 endif # ifeq ($(KBUILD_SRC),)
120 120
121 # We process the rest of the Makefile if this is the final invocation of make 121 # We process the rest of the Makefile if this is the final invocation of make
122 ifeq ($(skip-makefile),) 122 ifeq ($(skip-makefile),)
123 123
124 # If building an external module we do not care about the all: rule 124 # If building an external module we do not care about the all: rule
125 # but instead _all depend on modules 125 # but instead _all depend on modules
126 .PHONY: all 126 .PHONY: all
127 ifeq ($(KBUILD_EXTMOD),) 127 ifeq ($(KBUILD_EXTMOD),)
128 _all: all 128 _all: all
129 else 129 else
130 _all: modules 130 _all: modules
131 endif 131 endif
132 132
133 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 133 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
134 TOPDIR := $(srctree) 134 TOPDIR := $(srctree)
135 # FIXME - TOPDIR is obsolete, use srctree/objtree 135 # FIXME - TOPDIR is obsolete, use srctree/objtree
136 objtree := $(CURDIR) 136 objtree := $(CURDIR)
137 src := $(srctree) 137 src := $(srctree)
138 obj := $(objtree) 138 obj := $(objtree)
139 139
140 VPATH := $(srctree) 140 VPATH := $(srctree)
141 141
142 export srctree objtree VPATH TOPDIR 142 export srctree objtree VPATH TOPDIR
143 143
144 144
145 # SUBARCH tells the usermode build what the underlying arch is. That is set 145 # SUBARCH tells the usermode build what the underlying arch is. That is set
146 # first, and if a usermode build is happening, the "ARCH=um" on the command 146 # first, and if a usermode build is happening, the "ARCH=um" on the command
147 # line overrides the setting of ARCH below. If a native build is happening, 147 # line overrides the setting of ARCH below. If a native build is happening,
148 # then ARCH is assigned, getting whatever value it gets normally, and 148 # then ARCH is assigned, getting whatever value it gets normally, and
149 # SUBARCH is subsequently ignored. 149 # SUBARCH is subsequently ignored.
150 150
151 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 151 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
152 -e s/arm.*/arm/ -e s/sa110/arm/ \ 152 -e s/arm.*/arm/ -e s/sa110/arm/ \
153 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 153 -e s/s390x/s390/ -e s/parisc64/parisc/ \
154 -e s/ppc.*/powerpc/ ) 154 -e s/ppc.*/powerpc/ )
155 155
156 # Cross compiling and selecting different set of gcc/bin-utils 156 # Cross compiling and selecting different set of gcc/bin-utils
157 # --------------------------------------------------------------------------- 157 # ---------------------------------------------------------------------------
158 # 158 #
159 # When performing cross compilation for other architectures ARCH shall be set 159 # When performing cross compilation for other architectures ARCH shall be set
160 # to the target architecture. (See arch/* for the possibilities). 160 # to the target architecture. (See arch/* for the possibilities).
161 # ARCH can be set during invocation of make: 161 # ARCH can be set during invocation of make:
162 # make ARCH=ia64 162 # make ARCH=ia64
163 # Another way is to have ARCH set in the environment. 163 # Another way is to have ARCH set in the environment.
164 # The default ARCH is the host where make is executed. 164 # The default ARCH is the host where make is executed.
165 165
166 # CROSS_COMPILE specify the prefix used for all executables used 166 # CROSS_COMPILE specify the prefix used for all executables used
167 # during compilation. Only gcc and related bin-utils executables 167 # during compilation. Only gcc and related bin-utils executables
168 # are prefixed with $(CROSS_COMPILE). 168 # are prefixed with $(CROSS_COMPILE).
169 # CROSS_COMPILE can be set on the command line 169 # CROSS_COMPILE can be set on the command line
170 # make CROSS_COMPILE=ia64-linux- 170 # make CROSS_COMPILE=ia64-linux-
171 # Alternatively CROSS_COMPILE can be set in the environment. 171 # Alternatively CROSS_COMPILE can be set in the environment.
172 # Default value for CROSS_COMPILE is not to prefix executables 172 # Default value for CROSS_COMPILE is not to prefix executables
173 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 173 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
174 174
175 ARCH ?= $(SUBARCH) 175 ARCH ?= $(SUBARCH)
176 CROSS_COMPILE ?= 176 CROSS_COMPILE ?=
177 177
178 # Architecture as present in compile.h 178 # Architecture as present in compile.h
179 UTS_MACHINE := $(ARCH) 179 UTS_MACHINE := $(ARCH)
180 180
181 # SHELL used by kbuild 181 # SHELL used by kbuild
182 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 182 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
183 else if [ -x /bin/bash ]; then echo /bin/bash; \ 183 else if [ -x /bin/bash ]; then echo /bin/bash; \
184 else echo sh; fi ; fi) 184 else echo sh; fi ; fi)
185 185
186 HOSTCC = gcc 186 HOSTCC = gcc
187 HOSTCXX = g++ 187 HOSTCXX = g++
188 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 188 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
189 HOSTCXXFLAGS = -O2 189 HOSTCXXFLAGS = -O2
190 190
191 # Decide whether to build built-in, modular, or both. 191 # Decide whether to build built-in, modular, or both.
192 # Normally, just do built-in. 192 # Normally, just do built-in.
193 193
194 KBUILD_MODULES := 194 KBUILD_MODULES :=
195 KBUILD_BUILTIN := 1 195 KBUILD_BUILTIN := 1
196 196
197 # If we have only "make modules", don't compile built-in objects. 197 # If we have only "make modules", don't compile built-in objects.
198 # When we're building modules with modversions, we need to consider 198 # When we're building modules with modversions, we need to consider
199 # the built-in objects during the descend as well, in order to 199 # the built-in objects during the descend as well, in order to
200 # make sure the checksums are uptodate before we record them. 200 # make sure the checksums are uptodate before we record them.
201 201
202 ifeq ($(MAKECMDGOALS),modules) 202 ifeq ($(MAKECMDGOALS),modules)
203 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 203 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
204 endif 204 endif
205 205
206 # If we have "make <whatever> modules", compile modules 206 # If we have "make <whatever> modules", compile modules
207 # in addition to whatever we do anyway. 207 # in addition to whatever we do anyway.
208 # Just "make" or "make all" shall build modules as well 208 # Just "make" or "make all" shall build modules as well
209 209
210 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 210 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
211 KBUILD_MODULES := 1 211 KBUILD_MODULES := 1
212 endif 212 endif
213 213
214 ifeq ($(MAKECMDGOALS),) 214 ifeq ($(MAKECMDGOALS),)
215 KBUILD_MODULES := 1 215 KBUILD_MODULES := 1
216 endif 216 endif
217 217
218 export KBUILD_MODULES KBUILD_BUILTIN 218 export KBUILD_MODULES KBUILD_BUILTIN
219 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 219 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
220 220
221 # Beautify output 221 # Beautify output
222 # --------------------------------------------------------------------------- 222 # ---------------------------------------------------------------------------
223 # 223 #
224 # Normally, we echo the whole command before executing it. By making 224 # Normally, we echo the whole command before executing it. By making
225 # that echo $($(quiet)$(cmd)), we now have the possibility to set 225 # that echo $($(quiet)$(cmd)), we now have the possibility to set
226 # $(quiet) to choose other forms of output instead, e.g. 226 # $(quiet) to choose other forms of output instead, e.g.
227 # 227 #
228 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 228 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
229 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 229 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
230 # 230 #
231 # If $(quiet) is empty, the whole command will be printed. 231 # If $(quiet) is empty, the whole command will be printed.
232 # If it is set to "quiet_", only the short version will be printed. 232 # If it is set to "quiet_", only the short version will be printed.
233 # If it is set to "silent_", nothing wil be printed at all, since 233 # If it is set to "silent_", nothing wil be printed at all, since
234 # the variable $(silent_cmd_cc_o_c) doesn't exist. 234 # the variable $(silent_cmd_cc_o_c) doesn't exist.
235 # 235 #
236 # A simple variant is to prefix commands with $(Q) - that's useful 236 # A simple variant is to prefix commands with $(Q) - that's useful
237 # for commands that shall be hidden in non-verbose mode. 237 # for commands that shall be hidden in non-verbose mode.
238 # 238 #
239 # $(Q)ln $@ :< 239 # $(Q)ln $@ :<
240 # 240 #
241 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 241 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
242 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 242 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
243 243
244 ifeq ($(KBUILD_VERBOSE),1) 244 ifeq ($(KBUILD_VERBOSE),1)
245 quiet = 245 quiet =
246 Q = 246 Q =
247 else 247 else
248 quiet=quiet_ 248 quiet=quiet_
249 Q = @ 249 Q = @
250 endif 250 endif
251 251
252 # If the user is running make -s (silent mode), suppress echoing of 252 # If the user is running make -s (silent mode), suppress echoing of
253 # commands 253 # commands
254 254
255 ifneq ($(findstring s,$(MAKEFLAGS)),) 255 ifneq ($(findstring s,$(MAKEFLAGS)),)
256 quiet=silent_ 256 quiet=silent_
257 endif 257 endif
258 258
259 export quiet Q KBUILD_VERBOSE 259 export quiet Q KBUILD_VERBOSE
260 260
261 ###### 261 ######
262 # cc support functions to be used (only) in arch/$(ARCH)/Makefile 262 # cc support functions to be used (only) in arch/$(ARCH)/Makefile
263 # See documentation in Documentation/kbuild/makefiles.txt 263 # See documentation in Documentation/kbuild/makefiles.txt
264 264
265 # as-option 265 # as-option
266 # Usage: cflags-y += $(call as-option, -Wa$(comma)-isa=foo,) 266 # Usage: cflags-y += $(call as-option, -Wa$(comma)-isa=foo,)
267 267
268 as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \ 268 as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
269 -xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \ 269 -xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
270 else echo "$(2)"; fi ;) 270 else echo "$(2)"; fi ;)
271 271
272 # cc-option 272 # cc-option
273 # Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586) 273 # Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
274 274
275 cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ 275 cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
276 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) 276 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
277 277
278 # cc-option-yn 278 # cc-option-yn
279 # Usage: flag := $(call cc-option-yn, -march=winchip-c6) 279 # Usage: flag := $(call cc-option-yn, -march=winchip-c6)
280 cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ 280 cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
281 > /dev/null 2>&1; then echo "y"; else echo "n"; fi;) 281 > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
282 282
283 # cc-option-align 283 # cc-option-align
284 # Prefix align with either -falign or -malign 284 # Prefix align with either -falign or -malign
285 cc-option-align = $(subst -functions=0,,\ 285 cc-option-align = $(subst -functions=0,,\
286 $(call cc-option,-falign-functions=0,-malign-functions=0)) 286 $(call cc-option,-falign-functions=0,-malign-functions=0))
287 287
288 # cc-version 288 # cc-version
289 # Usage gcc-ver := $(call cc-version $(CC)) 289 # Usage gcc-ver := $(call cc-version $(CC))
290 cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \ 290 cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
291 $(if $(1), $(1), $(CC))) 291 $(if $(1), $(1), $(CC)))
292 292
293 293
294 # Look for make include files relative to root of kernel src 294 # Look for make include files relative to root of kernel src
295 MAKEFLAGS += --include-dir=$(srctree) 295 MAKEFLAGS += --include-dir=$(srctree)
296 296
297 # We need some generic definitions 297 # We need some generic definitions
298 include $(srctree)/scripts/Kbuild.include 298 include $(srctree)/scripts/Kbuild.include
299 299
300 # For maximum performance (+ possibly random breakage, uncomment 300 # For maximum performance (+ possibly random breakage, uncomment
301 # the following) 301 # the following)
302 302
303 #MAKEFLAGS += -rR 303 #MAKEFLAGS += -rR
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__ -Wbitwise $(CF) 323 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
324 MODFLAGS = -DMODULE 324 MODFLAGS = -DMODULE
325 CFLAGS_MODULE = $(MODFLAGS) 325 CFLAGS_MODULE = $(MODFLAGS)
326 AFLAGS_MODULE = $(MODFLAGS) 326 AFLAGS_MODULE = $(MODFLAGS)
327 LDFLAGS_MODULE = -r 327 LDFLAGS_MODULE = -r
328 CFLAGS_KERNEL = 328 CFLAGS_KERNEL =
329 AFLAGS_KERNEL = 329 AFLAGS_KERNEL =
330 330
331 331
332 # Use LINUXINCLUDE when you must reference the include/ directory. 332 # Use LINUXINCLUDE when you must reference the include/ directory.
333 # Needed to be compatible with the O= option 333 # Needed to be compatible with the O= option
334 LINUXINCLUDE := -Iinclude \ 334 LINUXINCLUDE := -Iinclude \
335 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ 335 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
336 -include include/linux/autoconf.h 336 -include include/linux/autoconf.h
337 337
338 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) 338 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
339 339
340 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 340 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
341 -fno-strict-aliasing -fno-common \ 341 -fno-strict-aliasing -fno-common \
342 -ffreestanding 342 -ffreestanding
343 AFLAGS := -D__ASSEMBLY__ 343 AFLAGS := -D__ASSEMBLY__
344 344
345 # Read KERNELRELEASE from .kernelrelease (if it exists) 345 # Read KERNELRELEASE from .kernelrelease (if it exists)
346 KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null) 346 KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)
347 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 347 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
348 348
349 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \ 349 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \
350 ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \ 350 ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
351 CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \ 351 CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
352 HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 352 HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
353 353
354 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 354 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
355 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 355 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
356 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 356 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
357 357
358 # When compiling out-of-tree modules, put MODVERDIR in the module 358 # When compiling out-of-tree modules, put MODVERDIR in the module
359 # tree rather than in the kernel tree. The kernel tree might 359 # tree rather than in the kernel tree. The kernel tree might
360 # even be read-only. 360 # even be read-only.
361 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 361 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
362 362
363 # Files to ignore in find ... statements 363 # Files to ignore in find ... statements
364 364
365 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 365 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
366 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 366 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
367 367
368 # =========================================================================== 368 # ===========================================================================
369 # Rules shared between *config targets and build targets 369 # Rules shared between *config targets and build targets
370 370
371 # Basic helpers built in scripts/ 371 # Basic helpers built in scripts/
372 .PHONY: scripts_basic 372 .PHONY: scripts_basic
373 scripts_basic: 373 scripts_basic:
374 $(Q)$(MAKE) $(build)=scripts/basic 374 $(Q)$(MAKE) $(build)=scripts/basic
375 375
376 # To avoid any implicit rule to kick in, define an empty command. 376 # To avoid any implicit rule to kick in, define an empty command.
377 scripts/basic/%: scripts_basic ; 377 scripts/basic/%: scripts_basic ;
378 378
379 .PHONY: outputmakefile 379 .PHONY: outputmakefile
380 # outputmakefile generate a Makefile to be placed in output directory, if 380 # outputmakefile generate a Makefile to be placed in output directory, if
381 # using a seperate output directory. This allows convinient use 381 # using a seperate output directory. This allows convinient use
382 # of make in output directory 382 # of make in output directory
383 outputmakefile: 383 outputmakefile:
384 $(Q)if test ! $(srctree) -ef $(objtree); then \ 384 $(Q)if test ! $(srctree) -ef $(objtree); then \
385 $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 385 $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
386 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \ 386 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \
387 > $(objtree)/Makefile; \ 387 > $(objtree)/Makefile; \
388 echo ' GEN $(objtree)/Makefile'; \ 388 echo ' GEN $(objtree)/Makefile'; \
389 fi 389 fi
390 390
391 # To make sure we do not include .config for any of the *config targets 391 # To make sure we do not include .config for any of the *config targets
392 # catch them early, and hand them over to scripts/kconfig/Makefile 392 # catch them early, and hand them over to scripts/kconfig/Makefile
393 # It is allowed to specify more targets when calling make, including 393 # It is allowed to specify more targets when calling make, including
394 # mixing *config targets and build targets. 394 # mixing *config targets and build targets.
395 # For example 'make oldconfig all'. 395 # For example 'make oldconfig all'.
396 # Detect when mixed targets is specified, and make a second invocation 396 # Detect when mixed targets is specified, and make a second invocation
397 # of make so .config is not included in this case either (for *config). 397 # of make so .config is not included in this case either (for *config).
398 398
399 no-dot-config-targets := clean mrproper distclean \ 399 no-dot-config-targets := clean mrproper distclean \
400 cscope TAGS tags help %docs check% 400 cscope TAGS tags help %docs check%
401 401
402 config-targets := 0 402 config-targets := 0
403 mixed-targets := 0 403 mixed-targets := 0
404 dot-config := 1 404 dot-config := 1
405 405
406 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 406 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
407 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 407 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
408 dot-config := 0 408 dot-config := 0
409 endif 409 endif
410 endif 410 endif
411 411
412 ifeq ($(KBUILD_EXTMOD),) 412 ifeq ($(KBUILD_EXTMOD),)
413 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 413 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
414 config-targets := 1 414 config-targets := 1
415 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 415 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
416 mixed-targets := 1 416 mixed-targets := 1
417 endif 417 endif
418 endif 418 endif
419 endif 419 endif
420 420
421 ifeq ($(mixed-targets),1) 421 ifeq ($(mixed-targets),1)
422 # =========================================================================== 422 # ===========================================================================
423 # We're called with mixed targets (*config and build targets). 423 # We're called with mixed targets (*config and build targets).
424 # Handle them one by one. 424 # Handle them one by one.
425 425
426 %:: FORCE 426 %:: FORCE
427 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 427 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
428 428
429 else 429 else
430 ifeq ($(config-targets),1) 430 ifeq ($(config-targets),1)
431 # =========================================================================== 431 # ===========================================================================
432 # *config targets only - make sure prerequisites are updated, and descend 432 # *config targets only - make sure prerequisites are updated, and descend
433 # in scripts/kconfig to make the *config target 433 # in scripts/kconfig to make the *config target
434 434
435 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 435 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
436 # KBUILD_DEFCONFIG may point out an alternative default configuration 436 # KBUILD_DEFCONFIG may point out an alternative default configuration
437 # used for 'make defconfig' 437 # used for 'make defconfig'
438 include $(srctree)/arch/$(ARCH)/Makefile 438 include $(srctree)/arch/$(ARCH)/Makefile
439 export KBUILD_DEFCONFIG 439 export KBUILD_DEFCONFIG
440 440
441 config %config: scripts_basic outputmakefile FORCE 441 config %config: scripts_basic outputmakefile FORCE
442 $(Q)mkdir -p include/linux 442 $(Q)mkdir -p include/linux
443 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 443 $(Q)$(MAKE) $(build)=scripts/kconfig $@
444 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease 444 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
445 445
446 else 446 else
447 # =========================================================================== 447 # ===========================================================================
448 # Build targets only - this includes vmlinux, arch specific targets, clean 448 # Build targets only - this includes vmlinux, arch specific targets, clean
449 # targets and others. In general all targets except *config targets. 449 # targets and others. In general all targets except *config targets.
450 450
451 ifeq ($(KBUILD_EXTMOD),) 451 ifeq ($(KBUILD_EXTMOD),)
452 # Additional helpers built in scripts/ 452 # Additional helpers built in scripts/
453 # Carefully list dependencies so we do not try to build scripts twice 453 # Carefully list dependencies so we do not try to build scripts twice
454 # in parrallel 454 # in parrallel
455 .PHONY: scripts 455 .PHONY: scripts
456 scripts: scripts_basic include/config/MARKER 456 scripts: scripts_basic include/config/MARKER
457 $(Q)$(MAKE) $(build)=$(@) 457 $(Q)$(MAKE) $(build)=$(@)
458 458
459 scripts_basic: include/linux/autoconf.h 459 scripts_basic: include/linux/autoconf.h
460 460
461 # Objects we will link into vmlinux / subdirs we need to visit 461 # Objects we will link into vmlinux / subdirs we need to visit
462 init-y := init/ 462 init-y := init/
463 drivers-y := drivers/ sound/ 463 drivers-y := drivers/ sound/
464 net-y := net/ 464 net-y := net/
465 libs-y := lib/ 465 libs-y := lib/
466 core-y := usr/ 466 core-y := usr/
467 endif # KBUILD_EXTMOD 467 endif # KBUILD_EXTMOD
468 468
469 ifeq ($(dot-config),1) 469 ifeq ($(dot-config),1)
470 # In this section, we need .config 470 # In this section, we need .config
471 471
472 # Read in dependencies to all Kconfig* files, make sure to run 472 # Read in dependencies to all Kconfig* files, make sure to run
473 # oldconfig if changes are detected. 473 # oldconfig if changes are detected.
474 -include .kconfig.d 474 -include .kconfig.d
475 475
476 include .config 476 include .config
477 477
478 # If .config needs to be updated, it will be done via the dependency 478 # If .config needs to be updated, it will be done via the dependency
479 # that autoconf has on .config. 479 # that autoconf has on .config.
480 # To avoid any implicit rule to kick in, define an empty command 480 # To avoid any implicit rule to kick in, define an empty command
481 .config .kconfig.d: ; 481 .config .kconfig.d: ;
482 482
483 # If .config is newer than include/linux/autoconf.h, someone tinkered 483 # If .config is newer than include/linux/autoconf.h, someone tinkered
484 # with it and forgot to run make oldconfig. 484 # with it and forgot to run make oldconfig.
485 # If kconfig.d is missing then we are probarly in a cleaned tree so 485 # If kconfig.d is missing then we are probarly in a cleaned tree so
486 # we execute the config step to be sure to catch updated Kconfig files 486 # we execute the config step to be sure to catch updated Kconfig files
487 include/linux/autoconf.h: .kconfig.d .config 487 include/linux/autoconf.h: .kconfig.d .config
488 $(Q)mkdir -p include/linux 488 $(Q)mkdir -p include/linux
489 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 489 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
490 else 490 else
491 # Dummy target needed, because used as prerequisite 491 # Dummy target needed, because used as prerequisite
492 include/linux/autoconf.h: ; 492 include/linux/autoconf.h: ;
493 endif 493 endif
494 494
495 # The all: target is the default when no target is given on the 495 # The all: target is the default when no target is given on the
496 # command line. 496 # command line.
497 # This allow a user to issue only 'make' to build a kernel including modules 497 # This allow a user to issue only 'make' to build a kernel including modules
498 # Defaults vmlinux but it is usually overriden in the arch makefile 498 # Defaults vmlinux but it is usually overriden in the arch makefile
499 all: vmlinux 499 all: vmlinux
500 500
501 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 501 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
502 CFLAGS += -Os 502 CFLAGS += -Os
503 else 503 else
504 CFLAGS += -O2 504 CFLAGS += -O2
505 endif 505 endif
506 506
507 #Add align options if CONFIG_CC_* is not equal to 0 507 #Add align options if CONFIG_CC_* is not equal to 0
508 add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1))) 508 add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1)))
509 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions) 509 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions)
510 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels) 510 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels)
511 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops) 511 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
512 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps) 512 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
513 513
514 ifdef CONFIG_FRAME_POINTER 514 ifdef CONFIG_FRAME_POINTER
515 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) 515 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
516 else 516 else
517 CFLAGS += -fomit-frame-pointer 517 CFLAGS += -fomit-frame-pointer
518 endif 518 endif
519 519
520 ifdef CONFIG_DEBUG_INFO 520 ifdef CONFIG_DEBUG_INFO
521 CFLAGS += -g 521 CFLAGS += -g
522 endif 522 endif
523 523
524 include $(srctree)/arch/$(ARCH)/Makefile 524 include $(srctree)/arch/$(ARCH)/Makefile
525 525
526 # arch Makefile may override CC so keep this after arch Makefile is included 526 # arch Makefile may override CC so keep this after arch Makefile is included
527 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 527 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
528 CHECKFLAGS += $(NOSTDINC_FLAGS) 528 CHECKFLAGS += $(NOSTDINC_FLAGS)
529 529
530 # warn about C99 declaration after statement 530 # warn about C99 declaration after statement
531 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 531 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
532 532
533 # disable pointer signedness warnings in gcc 4.0 533 # disable pointer signedness warnings in gcc 4.0
534 CFLAGS += $(call cc-option,-Wno-pointer-sign,) 534 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
535 535
536 # Default kernel image to build when no specific target is given. 536 # Default kernel image to build when no specific target is given.
537 # KBUILD_IMAGE may be overruled on the commandline or 537 # KBUILD_IMAGE may be overruled on the commandline or
538 # set in the environment 538 # set in the environment
539 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 539 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
540 # this default value 540 # this default value
541 export KBUILD_IMAGE ?= vmlinux 541 export KBUILD_IMAGE ?= vmlinux
542 542
543 # 543 #
544 # INSTALL_PATH specifies where to place the updated kernel and system map 544 # INSTALL_PATH specifies where to place the updated kernel and system map
545 # images. Default is /boot, but you can set it to other values 545 # images. Default is /boot, but you can set it to other values
546 export INSTALL_PATH ?= /boot 546 export INSTALL_PATH ?= /boot
547 547
548 # 548 #
549 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 549 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
550 # relocations required by build roots. This is not defined in the 550 # relocations required by build roots. This is not defined in the
551 # makefile but the arguement can be passed to make if needed. 551 # makefile but the arguement can be passed to make if needed.
552 # 552 #
553 553
554 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 554 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
555 export MODLIB 555 export MODLIB
556 556
557 557
558 ifeq ($(KBUILD_EXTMOD),) 558 ifeq ($(KBUILD_EXTMOD),)
559 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 559 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
560 560
561 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 561 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
562 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 562 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
563 $(net-y) $(net-m) $(libs-y) $(libs-m))) 563 $(net-y) $(net-m) $(libs-y) $(libs-m)))
564 564
565 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 565 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
566 $(init-n) $(init-) \ 566 $(init-n) $(init-) \
567 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 567 $(core-n) $(core-) $(drivers-n) $(drivers-) \
568 $(net-n) $(net-) $(libs-n) $(libs-)))) 568 $(net-n) $(net-) $(libs-n) $(libs-))))
569 569
570 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 570 init-y := $(patsubst %/, %/built-in.o, $(init-y))
571 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 571 core-y := $(patsubst %/, %/built-in.o, $(core-y))
572 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 572 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
573 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 573 net-y := $(patsubst %/, %/built-in.o, $(net-y))
574 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 574 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
575 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 575 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
576 libs-y := $(libs-y1) $(libs-y2) 576 libs-y := $(libs-y1) $(libs-y2)
577 577
578 # Build vmlinux 578 # Build vmlinux
579 # --------------------------------------------------------------------------- 579 # ---------------------------------------------------------------------------
580 # vmlinux is build from the objects selected by $(vmlinux-init) and 580 # vmlinux is build from the objects selected by $(vmlinux-init) and
581 # $(vmlinux-main). Most are built-in.o files from top-level directories 581 # $(vmlinux-main). Most are built-in.o files from top-level directories
582 # in the kernel tree, others are specified in arch/$(ARCH)Makefile. 582 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
583 # Ordering when linking is important, and $(vmlinux-init) must be first. 583 # Ordering when linking is important, and $(vmlinux-init) must be first.
584 # 584 #
585 # vmlinux 585 # vmlinux
586 # ^ 586 # ^
587 # | 587 # |
588 # +-< $(vmlinux-init) 588 # +-< $(vmlinux-init)
589 # | +--< init/version.o + more 589 # | +--< init/version.o + more
590 # | 590 # |
591 # +--< $(vmlinux-main) 591 # +--< $(vmlinux-main)
592 # | +--< driver/built-in.o mm/built-in.o + more 592 # | +--< driver/built-in.o mm/built-in.o + more
593 # | 593 # |
594 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 594 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
595 # 595 #
596 # vmlinux version (uname -v) cannot be updated during normal 596 # vmlinux version (uname -v) cannot be updated during normal
597 # descending-into-subdirs phase since we do not yet know if we need to 597 # descending-into-subdirs phase since we do not yet know if we need to
598 # update vmlinux. 598 # update vmlinux.
599 # Therefore this step is delayed until just before final link of vmlinux - 599 # Therefore this step is delayed until just before final link of vmlinux -
600 # except in the kallsyms case where it is done just before adding the 600 # except in the kallsyms case where it is done just before adding the
601 # symbols to the kernel. 601 # symbols to the kernel.
602 # 602 #
603 # System.map is generated to document addresses of all kernel symbols 603 # System.map is generated to document addresses of all kernel symbols
604 604
605 vmlinux-init := $(head-y) $(init-y) 605 vmlinux-init := $(head-y) $(init-y)
606 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 606 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
607 vmlinux-all := $(vmlinux-init) $(vmlinux-main) 607 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
608 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds 608 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
609 609
610 # Rule to link vmlinux - also used during CONFIG_KALLSYMS 610 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
611 # May be overridden by arch/$(ARCH)/Makefile 611 # May be overridden by arch/$(ARCH)/Makefile
612 quiet_cmd_vmlinux__ ?= LD $@ 612 quiet_cmd_vmlinux__ ?= LD $@
613 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 613 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
614 -T $(vmlinux-lds) $(vmlinux-init) \ 614 -T $(vmlinux-lds) $(vmlinux-init) \
615 --start-group $(vmlinux-main) --end-group \ 615 --start-group $(vmlinux-main) --end-group \
616 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 616 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
617 617
618 # Generate new vmlinux version 618 # Generate new vmlinux version
619 quiet_cmd_vmlinux_version = GEN .version 619 quiet_cmd_vmlinux_version = GEN .version
620 cmd_vmlinux_version = set -e; \ 620 cmd_vmlinux_version = set -e; \
621 if [ ! -r .version ]; then \ 621 if [ ! -r .version ]; then \
622 rm -f .version; \ 622 rm -f .version; \
623 echo 1 >.version; \ 623 echo 1 >.version; \
624 else \ 624 else \
625 mv .version .old_version; \ 625 mv .version .old_version; \
626 expr 0$$(cat .old_version) + 1 >.version; \ 626 expr 0$$(cat .old_version) + 1 >.version; \
627 fi; \ 627 fi; \
628 $(MAKE) $(build)=init 628 $(MAKE) $(build)=init
629 629
630 # Generate System.map 630 # Generate System.map
631 quiet_cmd_sysmap = SYSMAP 631 quiet_cmd_sysmap = SYSMAP
632 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 632 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
633 633
634 # Link of vmlinux 634 # Link of vmlinux
635 # If CONFIG_KALLSYMS is set .version is already updated 635 # If CONFIG_KALLSYMS is set .version is already updated
636 # Generate System.map and verify that the content is consistent 636 # Generate System.map and verify that the content is consistent
637 # Use + in front of the vmlinux_version rule to silent warning with make -j2 637 # Use + in front of the vmlinux_version rule to silent warning with make -j2
638 # First command is ':' to allow us to use + in front of the rule 638 # First command is ':' to allow us to use + in front of the rule
639 define rule_vmlinux__ 639 define rule_vmlinux__
640 : 640 :
641 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 641 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
642 642
643 $(call cmd,vmlinux__) 643 $(call cmd,vmlinux__)
644 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 644 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
645 645
646 $(Q)$(if $($(quiet)cmd_sysmap), \ 646 $(Q)$(if $($(quiet)cmd_sysmap), \
647 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 647 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
648 $(cmd_sysmap) $@ System.map; \ 648 $(cmd_sysmap) $@ System.map; \
649 if [ $$? -ne 0 ]; then \ 649 if [ $$? -ne 0 ]; then \
650 rm -f $@; \ 650 rm -f $@; \
651 /bin/false; \ 651 /bin/false; \
652 fi; 652 fi;
653 $(verify_kallsyms) 653 $(verify_kallsyms)
654 endef 654 endef
655 655
656 656
657 ifdef CONFIG_KALLSYMS 657 ifdef CONFIG_KALLSYMS
658 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 658 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
659 # It's a three stage process: 659 # It's a three stage process:
660 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 660 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
661 # empty 661 # empty
662 # Running kallsyms on that gives us .tmp_kallsyms1.o with 662 # Running kallsyms on that gives us .tmp_kallsyms1.o with
663 # the right size - vmlinux version (uname -v) is updated during this step 663 # the right size - vmlinux version (uname -v) is updated during this step
664 # o .tmp_vmlinux2 now has a __kallsyms section of the right size, 664 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
665 # but due to the added section, some addresses have shifted. 665 # but due to the added section, some addresses have shifted.
666 # From here, we generate a correct .tmp_kallsyms2.o 666 # From here, we generate a correct .tmp_kallsyms2.o
667 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 667 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
668 # o Verify that the System.map from vmlinux matches the map from 668 # o Verify that the System.map from vmlinux matches the map from
669 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 669 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
670 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using 670 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
671 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 671 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
672 # temporary bypass to allow the kernel to be built while the 672 # temporary bypass to allow the kernel to be built while the
673 # maintainers work out what went wrong with kallsyms. 673 # maintainers work out what went wrong with kallsyms.
674 674
675 ifdef CONFIG_KALLSYMS_EXTRA_PASS 675 ifdef CONFIG_KALLSYMS_EXTRA_PASS
676 last_kallsyms := 3 676 last_kallsyms := 3
677 else 677 else
678 last_kallsyms := 2 678 last_kallsyms := 2
679 endif 679 endif
680 680
681 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 681 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
682 682
683 define verify_kallsyms 683 define verify_kallsyms
684 $(Q)$(if $($(quiet)cmd_sysmap), \ 684 $(Q)$(if $($(quiet)cmd_sysmap), \
685 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 685 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
686 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 686 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
687 $(Q)cmp -s System.map .tmp_System.map || \ 687 $(Q)cmp -s System.map .tmp_System.map || \
688 (echo Inconsistent kallsyms data; \ 688 (echo Inconsistent kallsyms data; \
689 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ 689 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
690 rm .tmp_kallsyms* ; /bin/false ) 690 rm .tmp_kallsyms* ; /bin/false )
691 endef 691 endef
692 692
693 # Update vmlinux version before link 693 # Update vmlinux version before link
694 # Use + in front of this rule to silent warning about make -j1 694 # Use + in front of this rule to silent warning about make -j1
695 # First command is ':' to allow us to use + in front of this rule 695 # First command is ':' to allow us to use + in front of this rule
696 cmd_ksym_ld = $(cmd_vmlinux__) 696 cmd_ksym_ld = $(cmd_vmlinux__)
697 define rule_ksym_ld 697 define rule_ksym_ld
698 : 698 :
699 +$(call cmd,vmlinux_version) 699 +$(call cmd,vmlinux_version)
700 $(call cmd,vmlinux__) 700 $(call cmd,vmlinux__)
701 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 701 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
702 endef 702 endef
703 703
704 # Generate .S file with all kernel symbols 704 # Generate .S file with all kernel symbols
705 quiet_cmd_kallsyms = KSYM $@ 705 quiet_cmd_kallsyms = KSYM $@
706 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 706 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
707 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 707 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
708 708
709 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 709 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
710 $(call if_changed_dep,as_o_S) 710 $(call if_changed_dep,as_o_S)
711 711
712 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 712 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
713 $(call cmd,kallsyms) 713 $(call cmd,kallsyms)
714 714
715 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 715 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
716 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 716 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
717 $(call if_changed_rule,ksym_ld) 717 $(call if_changed_rule,ksym_ld)
718 718
719 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 719 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
720 $(call if_changed,vmlinux__) 720 $(call if_changed,vmlinux__)
721 721
722 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 722 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
723 $(call if_changed,vmlinux__) 723 $(call if_changed,vmlinux__)
724 724
725 # Needs to visit scripts/ before $(KALLSYMS) can be used. 725 # Needs to visit scripts/ before $(KALLSYMS) can be used.
726 $(KALLSYMS): scripts ; 726 $(KALLSYMS): scripts ;
727 727
728 # Generate some data for debugging strange kallsyms problems 728 # Generate some data for debugging strange kallsyms problems
729 debug_kallsyms: .tmp_map$(last_kallsyms) 729 debug_kallsyms: .tmp_map$(last_kallsyms)
730 730
731 .tmp_map%: .tmp_vmlinux% FORCE 731 .tmp_map%: .tmp_vmlinux% FORCE
732 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 732 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
733 733
734 .tmp_map3: .tmp_map2 734 .tmp_map3: .tmp_map2
735 735
736 .tmp_map2: .tmp_map1 736 .tmp_map2: .tmp_map1
737 737
738 endif # ifdef CONFIG_KALLSYMS 738 endif # ifdef CONFIG_KALLSYMS
739 739
740 # vmlinux image - including updated kernel symbols 740 # vmlinux image - including updated kernel symbols
741 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE 741 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
742 $(call if_changed_rule,vmlinux__) 742 $(call if_changed_rule,vmlinux__)
743 $(Q)rm -f .old_version 743 $(Q)rm -f .old_version
744 744
745 # The actual objects are generated when descending, 745 # The actual objects are generated when descending,
746 # make sure no implicit rule kicks in 746 # make sure no implicit rule kicks in
747 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 747 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
748 748
749 # Handle descending into subdirectories listed in $(vmlinux-dirs) 749 # Handle descending into subdirectories listed in $(vmlinux-dirs)
750 # Preset locale variables to speed up the build process. Limit locale 750 # Preset locale variables to speed up the build process. Limit locale
751 # tweaks to this spot to avoid wrong language settings when running 751 # tweaks to this spot to avoid wrong language settings when running
752 # make menuconfig etc. 752 # make menuconfig etc.
753 # Error messages still appears in the original language 753 # Error messages still appears in the original language
754 754
755 .PHONY: $(vmlinux-dirs) 755 .PHONY: $(vmlinux-dirs)
756 $(vmlinux-dirs): prepare scripts 756 $(vmlinux-dirs): prepare scripts
757 $(Q)$(MAKE) $(build)=$@ 757 $(Q)$(MAKE) $(build)=$@
758 758
759 # Build the kernel release string 759 # Build the kernel release string
760 # The KERNELRELEASE is stored in a file named .kernelrelease 760 # The KERNELRELEASE is stored in a file named .kernelrelease
761 # to be used when executing for example make install or make modules_install 761 # to be used when executing for example make install or make modules_install
762 # 762 #
763 # Take the contents of any files called localversion* and the config 763 # Take the contents of any files called localversion* and the config
764 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. 764 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
765 # LOCALVERSION from the command line override all of this 765 # LOCALVERSION from the command line override all of this
766 766
767 nullstring := 767 nullstring :=
768 space := $(nullstring) # end of line 768 space := $(nullstring) # end of line
769 769
770 ___localver = $(objtree)/localversion* $(srctree)/localversion* 770 ___localver = $(objtree)/localversion* $(srctree)/localversion*
771 __localver = $(sort $(wildcard $(___localver))) 771 __localver = $(sort $(wildcard $(___localver)))
772 # skip backup files (containing '~') 772 # skip backup files (containing '~')
773 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) 773 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
774 774
775 localver = $(subst $(space),, \ 775 localver = $(subst $(space),, \
776 $(shell cat /dev/null $(_localver)) \ 776 $(shell cat /dev/null $(_localver)) \
777 $(patsubst "%",%,$(CONFIG_LOCALVERSION))) 777 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
778 778
779 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called 779 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
780 # and if the SCM is know a tag from the SCM is appended. 780 # and if the SCM is know a tag from the SCM is appended.
781 # The appended tag is determinded by the SCM used. 781 # The appended tag is determinded by the SCM used.
782 # 782 #
783 # Currently, only git is supported. 783 # Currently, only git is supported.
784 # Other SCMs can edit scripts/setlocalversion and add the appropriate 784 # Other SCMs can edit scripts/setlocalversion and add the appropriate
785 # checks as needed. 785 # checks as needed.
786 ifdef CONFIG_LOCALVERSION_AUTO 786 ifdef CONFIG_LOCALVERSION_AUTO
787 _localver-auto = $(shell $(CONFIG_SHELL) \ 787 _localver-auto = $(shell $(CONFIG_SHELL) \
788 $(srctree)/scripts/setlocalversion $(srctree)) 788 $(srctree)/scripts/setlocalversion $(srctree))
789 localver-auto = $(LOCALVERSION)$(_localver-auto) 789 localver-auto = $(LOCALVERSION)$(_localver-auto)
790 endif 790 endif
791 791
792 localver-full = $(localver)$(localver-auto) 792 localver-full = $(localver)$(localver-auto)
793 793
794 # Store (new) KERNELRELASE string in .kernelrelease 794 # Store (new) KERNELRELASE string in .kernelrelease
795 kernelrelease = $(KERNELVERSION)$(localver-full) 795 kernelrelease = $(KERNELVERSION)$(localver-full)
796 .kernelrelease: FORCE 796 .kernelrelease: FORCE
797 $(Q)rm -f $@ 797 $(Q)rm -f $@
798 $(Q)echo $(kernelrelease) > $@ 798 $(Q)echo $(kernelrelease) > $@
799 799
800 800
801 # Things we need to do before we recursively start building the kernel 801 # Things we need to do before we recursively start building the kernel
802 # or the modules are listed in "prepare". 802 # or the modules are listed in "prepare".
803 # A multi level approach is used. prepareN is processed before prepareN-1. 803 # A multi level approach is used. prepareN is processed before prepareN-1.
804 # archprepare is used in arch Makefiles and when processed asm symlink, 804 # archprepare is used in arch Makefiles and when processed asm symlink,
805 # version.h and scripts_basic is processed / created. 805 # version.h and scripts_basic is processed / created.
806 806
807 # Listed in dependency order 807 # Listed in dependency order
808 .PHONY: prepare archprepare prepare0 prepare1 prepare2 prepare3 808 .PHONY: prepare archprepare prepare0 prepare1 prepare2 prepare3
809 809
810 # prepare-all is deprecated, use prepare as valid replacement 810 # prepare-all is deprecated, use prepare as valid replacement
811 .PHONY: prepare-all 811 .PHONY: prepare-all
812 812
813 # prepare3 is used to check if we are building in a separate output directory, 813 # prepare3 is used to check if we are building in a separate output directory,
814 # and if so do: 814 # and if so do:
815 # 1) Check that make has not been executed in the kernel src $(srctree) 815 # 1) Check that make has not been executed in the kernel src $(srctree)
816 # 2) Create the include2 directory, used for the second asm symlink 816 # 2) Create the include2 directory, used for the second asm symlink
817 prepare3: .kernelrelease 817 prepare3: .kernelrelease
818 ifneq ($(KBUILD_SRC),) 818 ifneq ($(KBUILD_SRC),)
819 @echo ' Using $(srctree) as source for kernel' 819 @echo ' Using $(srctree) as source for kernel'
820 $(Q)if [ -f $(srctree)/.config ]; then \ 820 $(Q)if [ -f $(srctree)/.config ]; then \
821 echo " $(srctree) is not clean, please run 'make mrproper'";\ 821 echo " $(srctree) is not clean, please run 'make mrproper'";\
822 echo " in the '$(srctree)' directory.";\ 822 echo " in the '$(srctree)' directory.";\
823 /bin/false; \ 823 /bin/false; \
824 fi; 824 fi;
825 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; 825 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
826 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm 826 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
827 endif 827 endif
828 828
829 # prepare2 creates a makefile if using a separate output directory 829 # prepare2 creates a makefile if using a separate output directory
830 prepare2: prepare3 outputmakefile 830 prepare2: prepare3 outputmakefile
831 831
832 prepare1: prepare2 include/linux/version.h include/asm \ 832 prepare1: prepare2 include/linux/version.h include/asm \
833 include/config/MARKER 833 include/config/MARKER
834 ifneq ($(KBUILD_MODULES),) 834 ifneq ($(KBUILD_MODULES),)
835 $(Q)rm -rf $(MODVERDIR) 835 $(Q)rm -rf $(MODVERDIR)
836 $(Q)mkdir -p $(MODVERDIR) 836 $(Q)mkdir -p $(MODVERDIR)
837 endif 837 endif
838 838
839 archprepare: prepare1 scripts_basic 839 archprepare: prepare1 scripts_basic
840 840
841 prepare0: archprepare FORCE 841 prepare0: archprepare FORCE
842 $(Q)$(MAKE) $(build)=. 842 $(Q)$(MAKE) $(build)=.
843 843
844 # All the preparing.. 844 # All the preparing..
845 prepare prepare-all: prepare0 845 prepare prepare-all: prepare0
846 846
847 # Leave this as default for preprocessing vmlinux.lds.S, which is now 847 # Leave this as default for preprocessing vmlinux.lds.S, which is now
848 # done in arch/$(ARCH)/kernel/Makefile 848 # done in arch/$(ARCH)/kernel/Makefile
849 849
850 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) 850 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
851 851
852 # Single targets 852 # Single targets
853 # --------------------------------------------------------------------------- 853 # ---------------------------------------------------------------------------
854 854
855 %.s: %.c scripts FORCE 855 %.s: %.c scripts FORCE
856 $(Q)$(MAKE) $(build)=$(@D) $@ 856 $(Q)$(MAKE) $(build)=$(@D) $@
857 %.i: %.c scripts FORCE 857 %.i: %.c scripts FORCE
858 $(Q)$(MAKE) $(build)=$(@D) $@ 858 $(Q)$(MAKE) $(build)=$(@D) $@
859 %.o: %.c scripts FORCE 859 %.o: %.c scripts FORCE
860 $(Q)$(MAKE) $(build)=$(@D) $@ 860 $(Q)$(MAKE) $(build)=$(@D) $@
861 %.ko: scripts FORCE 861 %.ko: scripts FORCE
862 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D) $(@:.ko=.o) 862 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D) $(@:.ko=.o)
863 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 863 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
864 %/: scripts prepare FORCE 864 %/: scripts prepare FORCE
865 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D) 865 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D)
866 %.lst: %.c scripts FORCE 866 %.lst: %.c scripts FORCE
867 $(Q)$(MAKE) $(build)=$(@D) $@ 867 $(Q)$(MAKE) $(build)=$(@D) $@
868 %.s: %.S scripts FORCE 868 %.s: %.S scripts FORCE
869 $(Q)$(MAKE) $(build)=$(@D) $@ 869 $(Q)$(MAKE) $(build)=$(@D) $@
870 %.o: %.S scripts FORCE 870 %.o: %.S scripts FORCE
871 $(Q)$(MAKE) $(build)=$(@D) $@ 871 $(Q)$(MAKE) $(build)=$(@D) $@
872 872
873 # FIXME: The asm symlink changes when $(ARCH) changes. That's 873 # FIXME: The asm symlink changes when $(ARCH) changes. That's
874 # hard to detect, but I suppose "make mrproper" is a good idea 874 # hard to detect, but I suppose "make mrproper" is a good idea
875 # before switching between archs anyway. 875 # before switching between archs anyway.
876 876
877 include/asm: 877 include/asm:
878 @echo ' SYMLINK $@ -> include/asm-$(ARCH)' 878 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
879 $(Q)if [ ! -d include ]; then mkdir -p include; fi; 879 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
880 @ln -fsn asm-$(ARCH) $@ 880 @ln -fsn asm-$(ARCH) $@
881 881
882 # Split autoconf.h into include/linux/config/* 882 # Split autoconf.h into include/linux/config/*
883 883
884 include/config/MARKER: scripts/basic/split-include include/linux/autoconf.h 884 include/config/MARKER: scripts/basic/split-include include/linux/autoconf.h
885 @echo ' SPLIT include/linux/autoconf.h -> include/config/*' 885 @echo ' SPLIT include/linux/autoconf.h -> include/config/*'
886 @scripts/basic/split-include include/linux/autoconf.h include/config 886 @scripts/basic/split-include include/linux/autoconf.h include/config
887 @touch $@ 887 @touch $@
888 888
889 # Generate some files 889 # Generate some files
890 # --------------------------------------------------------------------------- 890 # ---------------------------------------------------------------------------
891 891
892 # KERNELRELEASE can change from a few different places, meaning version.h 892 # KERNELRELEASE can change from a few different places, meaning version.h
893 # needs to be updated, so this check is forced on all builds 893 # needs to be updated, so this check is forced on all builds
894 894
895 uts_len := 64 895 uts_len := 64
896 896
897 define filechk_version.h 897 define filechk_version.h
898 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 898 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
899 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 899 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
900 exit 1; \ 900 exit 1; \
901 fi; \ 901 fi; \
902 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \ 902 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
903 echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \ 903 echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
904 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \ 904 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
905 ) 905 )
906 endef 906 endef
907 907
908 include/linux/version.h: $(srctree)/Makefile .config FORCE 908 include/linux/version.h: $(srctree)/Makefile .config FORCE
909 $(call filechk,version.h) 909 $(call filechk,version.h)
910 910
911 # --------------------------------------------------------------------------- 911 # ---------------------------------------------------------------------------
912 912
913 .PHONY: depend dep 913 .PHONY: depend dep
914 depend dep: 914 depend dep:
915 @echo '*** Warning: make $@ is unnecessary now.' 915 @echo '*** Warning: make $@ is unnecessary now.'
916 916
917 # --------------------------------------------------------------------------- 917 # ---------------------------------------------------------------------------
918 # Modules 918 # Modules
919 919
920 ifdef CONFIG_MODULES 920 ifdef CONFIG_MODULES
921 921
922 # By default, build modules as well 922 # By default, build modules as well
923 923
924 all: modules 924 all: modules
925 925
926 # Build modules 926 # Build modules
927 927
928 .PHONY: modules 928 .PHONY: modules
929 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) 929 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
930 @echo ' Building modules, stage 2.'; 930 @echo ' Building modules, stage 2.';
931 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 931 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
932 932
933 933
934 # Target to prepare building external modules 934 # Target to prepare building external modules
935 .PHONY: modules_prepare 935 .PHONY: modules_prepare
936 modules_prepare: prepare scripts 936 modules_prepare: prepare scripts
937 937
938 # Target to install modules 938 # Target to install modules
939 .PHONY: modules_install 939 .PHONY: modules_install
940 modules_install: _modinst_ _modinst_post 940 modules_install: _modinst_ _modinst_post
941 941
942 .PHONY: _modinst_ 942 .PHONY: _modinst_
943 _modinst_: 943 _modinst_:
944 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ 944 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
945 echo "Warning: you may need to install module-init-tools"; \ 945 echo "Warning: you may need to install module-init-tools"; \
946 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ 946 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
947 sleep 1; \ 947 sleep 1; \
948 fi 948 fi
949 @rm -rf $(MODLIB)/kernel 949 @rm -rf $(MODLIB)/kernel
950 @rm -f $(MODLIB)/source 950 @rm -f $(MODLIB)/source
951 @mkdir -p $(MODLIB)/kernel 951 @mkdir -p $(MODLIB)/kernel
952 @ln -s $(srctree) $(MODLIB)/source 952 @ln -s $(srctree) $(MODLIB)/source
953 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 953 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
954 rm -f $(MODLIB)/build ; \ 954 rm -f $(MODLIB)/build ; \
955 ln -s $(objtree) $(MODLIB)/build ; \ 955 ln -s $(objtree) $(MODLIB)/build ; \
956 fi 956 fi
957 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst 957 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
958 958
959 # If System.map exists, run depmod. This deliberately does not have a 959 # If System.map exists, run depmod. This deliberately does not have a
960 # dependency on System.map since that would run the dependency tree on 960 # dependency on System.map since that would run the dependency tree on
961 # vmlinux. This depmod is only for convenience to give the initial 961 # vmlinux. This depmod is only for convenience to give the initial
962 # boot a modules.dep even before / is mounted read-write. However the 962 # boot a modules.dep even before / is mounted read-write. However the
963 # boot script depmod is the master version. 963 # boot script depmod is the master version.
964 ifeq "$(strip $(INSTALL_MOD_PATH))" "" 964 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
965 depmod_opts := 965 depmod_opts :=
966 else 966 else
967 depmod_opts := -b $(INSTALL_MOD_PATH) -r 967 depmod_opts := -b $(INSTALL_MOD_PATH) -r
968 endif 968 endif
969 .PHONY: _modinst_post 969 .PHONY: _modinst_post
970 _modinst_post: _modinst_ 970 _modinst_post: _modinst_
971 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi 971 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
972 972
973 else # CONFIG_MODULES 973 else # CONFIG_MODULES
974 974
975 # Modules not configured 975 # Modules not configured
976 # --------------------------------------------------------------------------- 976 # ---------------------------------------------------------------------------
977 977
978 modules modules_install: FORCE 978 modules modules_install: FORCE
979 @echo 979 @echo
980 @echo "The present kernel configuration has modules disabled." 980 @echo "The present kernel configuration has modules disabled."
981 @echo "Type 'make config' and enable loadable module support." 981 @echo "Type 'make config' and enable loadable module support."
982 @echo "Then build a kernel with module support enabled." 982 @echo "Then build a kernel with module support enabled."
983 @echo 983 @echo
984 @exit 1 984 @exit 1
985 985
986 endif # CONFIG_MODULES 986 endif # CONFIG_MODULES
987 987
988 ### 988 ###
989 # Cleaning is done on three levels. 989 # Cleaning is done on three levels.
990 # make clean Delete most generated files 990 # make clean Delete most generated files
991 # Leave enough to build external modules 991 # Leave enough to build external modules
992 # make mrproper Delete the current configuration, and all generated files 992 # make mrproper Delete the current configuration, and all generated files
993 # make distclean Remove editor backup files, patch leftover files and the like 993 # make distclean Remove editor backup files, patch leftover files and the like
994 994
995 # Directories & files removed with 'make clean' 995 # Directories & files removed with 'make clean'
996 CLEAN_DIRS += $(MODVERDIR) 996 CLEAN_DIRS += $(MODVERDIR)
997 CLEAN_FILES += vmlinux System.map \ 997 CLEAN_FILES += vmlinux System.map \
998 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 998 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
999 999
1000 # Directories & files removed with 'make mrproper' 1000 # Directories & files removed with 'make mrproper'
1001 MRPROPER_DIRS += include/config include2 1001 MRPROPER_DIRS += include/config include2
1002 MRPROPER_FILES += .config .config.old include/asm .version .old_version \ 1002 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
1003 include/linux/autoconf.h include/linux/version.h \ 1003 include/linux/autoconf.h include/linux/version.h \
1004 .kernelrelease Module.symvers tags TAGS cscope* 1004 .kernelrelease Module.symvers tags TAGS cscope*
1005 1005
1006 # clean - Delete most, but leave enough to build external modules 1006 # clean - Delete most, but leave enough to build external modules
1007 # 1007 #
1008 clean: rm-dirs := $(CLEAN_DIRS) 1008 clean: rm-dirs := $(CLEAN_DIRS)
1009 clean: rm-files := $(CLEAN_FILES) 1009 clean: rm-files := $(CLEAN_FILES)
1010 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) 1010 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
1011 1011
1012 .PHONY: $(clean-dirs) clean archclean 1012 .PHONY: $(clean-dirs) clean archclean
1013 $(clean-dirs): 1013 $(clean-dirs):
1014 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1014 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1015 1015
1016 clean: archclean $(clean-dirs) 1016 clean: archclean $(clean-dirs)
1017 $(call cmd,rmdirs) 1017 $(call cmd,rmdirs)
1018 $(call cmd,rmfiles) 1018 $(call cmd,rmfiles)
1019 @find . $(RCS_FIND_IGNORE) \ 1019 @find . $(RCS_FIND_IGNORE) \
1020 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1020 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1021 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ 1021 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1022 -type f -print | xargs rm -f 1022 -type f -print | xargs rm -f
1023 1023
1024 # mrproper - Delete all generated files, including .config 1024 # mrproper - Delete all generated files, including .config
1025 # 1025 #
1026 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1026 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1027 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1027 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1028 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1028 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1029 1029
1030 .PHONY: $(mrproper-dirs) mrproper archmrproper 1030 .PHONY: $(mrproper-dirs) mrproper archmrproper
1031 $(mrproper-dirs): 1031 $(mrproper-dirs):
1032 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1032 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1033 1033
1034 mrproper: clean archmrproper $(mrproper-dirs) 1034 mrproper: clean archmrproper $(mrproper-dirs)
1035 $(call cmd,rmdirs) 1035 $(call cmd,rmdirs)
1036 $(call cmd,rmfiles) 1036 $(call cmd,rmfiles)
1037 1037
1038 # distclean 1038 # distclean
1039 # 1039 #
1040 .PHONY: distclean 1040 .PHONY: distclean
1041 1041
1042 distclean: mrproper 1042 distclean: mrproper
1043 @find $(srctree) $(RCS_FIND_IGNORE) \ 1043 @find $(srctree) $(RCS_FIND_IGNORE) \
1044 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1044 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1045 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1045 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1046 -o -name '.*.rej' -o -size 0 \ 1046 -o -name '.*.rej' -o -size 0 \
1047 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 1047 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1048 -type f -print | xargs rm -f 1048 -type f -print | xargs rm -f
1049 1049
1050 1050
1051 # Packaging of the kernel to various formats 1051 # Packaging of the kernel to various formats
1052 # --------------------------------------------------------------------------- 1052 # ---------------------------------------------------------------------------
1053 # rpm target kept for backward compatibility 1053 # rpm target kept for backward compatibility
1054 package-dir := $(srctree)/scripts/package 1054 package-dir := $(srctree)/scripts/package
1055 1055
1056 .PHONY: %-pkg rpm 1056 .PHONY: %-pkg rpm
1057 1057
1058 %pkg: FORCE 1058 %pkg: FORCE
1059 $(Q)$(MAKE) -f $(package-dir)/Makefile $@ 1059 $(Q)$(MAKE) -f $(package-dir)/Makefile $@
1060 rpm: FORCE 1060 rpm: FORCE
1061 $(Q)$(MAKE) -f $(package-dir)/Makefile $@ 1061 $(Q)$(MAKE) -f $(package-dir)/Makefile $@
1062 1062
1063 1063
1064 # Brief documentation of the typical targets used 1064 # Brief documentation of the typical targets used
1065 # --------------------------------------------------------------------------- 1065 # ---------------------------------------------------------------------------
1066 1066
1067 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) 1067 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1068 boards := $(notdir $(boards)) 1068 boards := $(notdir $(boards))
1069 1069
1070 help: 1070 help:
1071 @echo 'Cleaning targets:' 1071 @echo 'Cleaning targets:'
1072 @echo ' clean - remove most generated files but keep the config' 1072 @echo ' clean - remove most generated files but keep the config'
1073 @echo ' mrproper - remove all generated files + config + various backup files' 1073 @echo ' mrproper - remove all generated files + config + various backup files'
1074 @echo '' 1074 @echo ''
1075 @echo 'Configuration targets:' 1075 @echo 'Configuration targets:'
1076 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1076 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1077 @echo '' 1077 @echo ''
1078 @echo 'Other generic targets:' 1078 @echo 'Other generic targets:'
1079 @echo ' all - Build all targets marked with [*]' 1079 @echo ' all - Build all targets marked with [*]'
1080 @echo '* vmlinux - Build the bare kernel' 1080 @echo '* vmlinux - Build the bare kernel'
1081 @echo '* modules - Build all modules' 1081 @echo '* modules - Build all modules'
1082 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1082 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1083 @echo ' dir/ - Build all files in dir and below' 1083 @echo ' dir/ - Build all files in dir and below'
1084 @echo ' dir/file.[ois] - Build specified target only' 1084 @echo ' dir/file.[ois] - Build specified target only'
1085 @echo ' dir/file.ko - Build module including final link' 1085 @echo ' dir/file.ko - Build module including final link'
1086 @echo ' rpm - Build a kernel as an RPM package' 1086 @echo ' rpm - Build a kernel as an RPM package'
1087 @echo ' tags/TAGS - Generate tags file for editors' 1087 @echo ' tags/TAGS - Generate tags file for editors'
1088 @echo ' cscope - Generate cscope index' 1088 @echo ' cscope - Generate cscope index'
1089 @echo ' kernelrelease - Output the release version string' 1089 @echo ' kernelrelease - Output the release version string'
1090 @echo ' kernelversion - Output the version stored in Makefile' 1090 @echo ' kernelversion - Output the version stored in Makefile'
1091 @echo '' 1091 @echo ''
1092 @echo 'Static analysers' 1092 @echo 'Static analysers'
1093 @echo ' buildcheck - List dangling references to vmlinux discarded sections' 1093 @echo ' buildcheck - List dangling references to vmlinux discarded sections'
1094 @echo ' and init sections from non-init sections' 1094 @echo ' and init sections from non-init sections'
1095 @echo ' checkstack - Generate a list of stack hogs' 1095 @echo ' checkstack - Generate a list of stack hogs'
1096 @echo ' namespacecheck - Name space analysis on compiled kernel' 1096 @echo ' namespacecheck - Name space analysis on compiled kernel'
1097 @echo '' 1097 @echo ''
1098 @echo 'Kernel packaging:' 1098 @echo 'Kernel packaging:'
1099 @$(MAKE) -f $(package-dir)/Makefile help 1099 @$(MAKE) -f $(package-dir)/Makefile help
1100 @echo '' 1100 @echo ''
1101 @echo 'Documentation targets:' 1101 @echo 'Documentation targets:'
1102 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1102 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1103 @echo '' 1103 @echo ''
1104 @echo 'Architecture specific targets ($(ARCH)):' 1104 @echo 'Architecture specific targets ($(ARCH)):'
1105 @$(if $(archhelp),$(archhelp),\ 1105 @$(if $(archhelp),$(archhelp),\
1106 echo ' No architecture specific help defined for $(ARCH)') 1106 echo ' No architecture specific help defined for $(ARCH)')
1107 @echo '' 1107 @echo ''
1108 @$(if $(boards), \ 1108 @$(if $(boards), \
1109 $(foreach b, $(boards), \ 1109 $(foreach b, $(boards), \
1110 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1110 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1111 echo '') 1111 echo '')
1112 1112
1113 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1113 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1114 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1114 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1115 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)' 1115 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)'
1116 @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)' 1116 @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)'
1117 @echo '' 1117 @echo ''
1118 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1118 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1119 @echo 'For further info see the ./README file' 1119 @echo 'For further info see the ./README file'
1120 1120
1121 1121
1122 # Documentation targets 1122 # Documentation targets
1123 # --------------------------------------------------------------------------- 1123 # ---------------------------------------------------------------------------
1124 %docs: scripts_basic FORCE 1124 %docs: scripts_basic FORCE
1125 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1125 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1126 1126
1127 else # KBUILD_EXTMOD 1127 else # KBUILD_EXTMOD
1128 1128
1129 ### 1129 ###
1130 # External module support. 1130 # External module support.
1131 # When building external modules the kernel used as basis is considered 1131 # When building external modules the kernel used as basis is considered
1132 # read-only, and no consistency checks are made and the make 1132 # read-only, and no consistency checks are made and the make
1133 # system is not used on the basis kernel. If updates are required 1133 # system is not used on the basis kernel. If updates are required
1134 # in the basis kernel ordinary make commands (without M=...) must 1134 # in the basis kernel ordinary make commands (without M=...) must
1135 # be used. 1135 # be used.
1136 # 1136 #
1137 # The following are the only valid targets when building external 1137 # The following are the only valid targets when building external
1138 # modules. 1138 # modules.
1139 # make M=dir clean Delete all automatically generated files 1139 # make M=dir clean Delete all automatically generated files
1140 # make M=dir modules Make all modules in specified dir 1140 # make M=dir modules Make all modules in specified dir
1141 # make M=dir Same as 'make M=dir modules' 1141 # make M=dir Same as 'make M=dir modules'
1142 # make M=dir modules_install 1142 # make M=dir modules_install
1143 # Install the modules build in the module directory 1143 # Install the modules build in the module directory
1144 # Assumes install directory is already created 1144 # Assumes install directory is already created
1145 1145
1146 # We are always building modules 1146 # We are always building modules
1147 KBUILD_MODULES := 1 1147 KBUILD_MODULES := 1
1148 .PHONY: crmodverdir 1148 .PHONY: crmodverdir
1149 crmodverdir: 1149 crmodverdir:
1150 $(Q)mkdir -p $(MODVERDIR) 1150 $(Q)mkdir -p $(MODVERDIR)
1151 1151
1152 .PHONY: $(objtree)/Module.symvers 1152 .PHONY: $(objtree)/Module.symvers
1153 $(objtree)/Module.symvers: 1153 $(objtree)/Module.symvers:
1154 @test -e $(objtree)/Module.symvers || ( \ 1154 @test -e $(objtree)/Module.symvers || ( \
1155 echo; \ 1155 echo; \
1156 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1156 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1157 echo " is missing; modules will have no dependencies and modversions."; \ 1157 echo " is missing; modules will have no dependencies and modversions."; \
1158 echo ) 1158 echo )
1159 1159
1160 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1160 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1161 .PHONY: $(module-dirs) modules 1161 .PHONY: $(module-dirs) modules
1162 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1162 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1163 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1163 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1164 1164
1165 modules: $(module-dirs) 1165 modules: $(module-dirs)
1166 @echo ' Building modules, stage 2.'; 1166 @echo ' Building modules, stage 2.';
1167 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 1167 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1168 1168
1169 .PHONY: modules_install 1169 .PHONY: modules_install
1170 modules_install: 1170 modules_install:
1171 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst 1171 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
1172 1172
1173 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1173 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1174 1174
1175 .PHONY: $(clean-dirs) clean 1175 .PHONY: $(clean-dirs) clean
1176 $(clean-dirs): 1176 $(clean-dirs):
1177 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1177 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1178 1178
1179 clean: rm-dirs := $(MODVERDIR) 1179 clean: rm-dirs := $(MODVERDIR)
1180 clean: $(clean-dirs) 1180 clean: $(clean-dirs)
1181 $(call cmd,rmdirs) 1181 $(call cmd,rmdirs)
1182 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ 1182 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1183 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1183 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1184 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ 1184 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1185 -type f -print | xargs rm -f 1185 -type f -print | xargs rm -f
1186 1186
1187 help: 1187 help:
1188 @echo ' Building external modules.' 1188 @echo ' Building external modules.'
1189 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1189 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1190 @echo '' 1190 @echo ''
1191 @echo ' modules - default target, build the module(s)' 1191 @echo ' modules - default target, build the module(s)'
1192 @echo ' modules_install - install the module' 1192 @echo ' modules_install - install the module'
1193 @echo ' clean - remove generated files in module directory only' 1193 @echo ' clean - remove generated files in module directory only'
1194 @echo '' 1194 @echo ''
1195 endif # KBUILD_EXTMOD 1195 endif # KBUILD_EXTMOD
1196 1196
1197 # Generate tags for editors 1197 # Generate tags for editors
1198 # --------------------------------------------------------------------------- 1198 # ---------------------------------------------------------------------------
1199 1199
1200 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set 1200 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1201 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. 1201 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1202 #Adding $(srctree) adds about 20M on i386 to the size of the output file! 1202 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1203 1203
1204 ifeq ($(src),$(obj)) 1204 ifeq ($(src),$(obj))
1205 __srctree = 1205 __srctree =
1206 else 1206 else
1207 __srctree = $(srctree)/ 1207 __srctree = $(srctree)/
1208 endif 1208 endif
1209 1209
1210 ifeq ($(ALLSOURCE_ARCHS),) 1210 ifeq ($(ALLSOURCE_ARCHS),)
1211 ifeq ($(ARCH),um) 1211 ifeq ($(ARCH),um)
1212 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) 1212 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1213 else 1213 else
1214 ALLINCLUDE_ARCHS := $(ARCH) 1214 ALLINCLUDE_ARCHS := $(ARCH)
1215 endif 1215 endif
1216 else 1216 else
1217 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour. 1217 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
1218 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) 1218 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1219 endif 1219 endif
1220 1220
1221 ALLSOURCE_ARCHS := $(ARCH) 1221 ALLSOURCE_ARCHS := $(ARCH)
1222 1222
1223 define all-sources 1223 define all-sources
1224 ( find $(__srctree) $(RCS_FIND_IGNORE) \ 1224 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1225 \( -name include -o -name arch \) -prune -o \ 1225 \( -name include -o -name arch \) -prune -o \
1226 -name '*.[chS]' -print; \ 1226 -name '*.[chS]' -print; \
1227 for ARCH in $(ALLSOURCE_ARCHS) ; do \ 1227 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1228 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ 1228 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1229 -name '*.[chS]' -print; \ 1229 -name '*.[chS]' -print; \
1230 done ; \ 1230 done ; \
1231 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ 1231 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1232 -name '*.[chS]' -print; \ 1232 -name '*.[chS]' -print; \
1233 find $(__srctree)include $(RCS_FIND_IGNORE) \ 1233 find $(__srctree)include $(RCS_FIND_IGNORE) \
1234 \( -name config -o -name 'asm-*' \) -prune \ 1234 \( -name config -o -name 'asm-*' \) -prune \
1235 -o -name '*.[chS]' -print; \ 1235 -o -name '*.[chS]' -print; \
1236 for ARCH in $(ALLINCLUDE_ARCHS) ; do \ 1236 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1237 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ 1237 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1238 -name '*.[chS]' -print; \ 1238 -name '*.[chS]' -print; \
1239 done ; \ 1239 done ; \
1240 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ 1240 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1241 -name '*.[chS]' -print ) 1241 -name '*.[chS]' -print )
1242 endef 1242 endef
1243 1243
1244 quiet_cmd_cscope-file = FILELST cscope.files 1244 quiet_cmd_cscope-file = FILELST cscope.files
1245 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files 1245 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1246 1246
1247 quiet_cmd_cscope = MAKE cscope.out 1247 quiet_cmd_cscope = MAKE cscope.out
1248 cmd_cscope = cscope -b 1248 cmd_cscope = cscope -b
1249 1249
1250 cscope: FORCE 1250 cscope: FORCE
1251 $(call cmd,cscope-file) 1251 $(call cmd,cscope-file)
1252 $(call cmd,cscope) 1252 $(call cmd,cscope)
1253 1253
1254 quiet_cmd_TAGS = MAKE $@ 1254 quiet_cmd_TAGS = MAKE $@
1255 define cmd_TAGS 1255 define cmd_TAGS
1256 rm -f $@; \ 1256 rm -f $@; \
1257 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \ 1257 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
1258 echo "-I __initdata,__exitdata,__acquires,__releases \ 1258 echo "-I __initdata,__exitdata,__acquires,__releases \
1259 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ 1259 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1260 --extra=+f --c-kinds=+px"`; \ 1260 --extra=+f --c-kinds=+px"`; \
1261 $(all-sources) | xargs etags $$ETAGSF -a 1261 $(all-sources) | xargs etags $$ETAGSF -a
1262 endef 1262 endef
1263 1263
1264 TAGS: FORCE 1264 TAGS: FORCE
1265 $(call cmd,TAGS) 1265 $(call cmd,TAGS)
1266 1266
1267 1267
1268 quiet_cmd_tags = MAKE $@ 1268 quiet_cmd_tags = MAKE $@
1269 define cmd_tags 1269 define cmd_tags
1270 rm -f $@; \ 1270 rm -f $@; \
1271 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \ 1271 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
1272 echo "-I __initdata,__exitdata,__acquires,__releases \ 1272 echo "-I __initdata,__exitdata,__acquires,__releases \
1273 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ 1273 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1274 --extra=+f --c-kinds=+px"`; \ 1274 --extra=+f --c-kinds=+px"`; \
1275 $(all-sources) | xargs ctags $$CTAGSF -a 1275 $(all-sources) | xargs ctags $$CTAGSF -a
1276 endef 1276 endef
1277 1277
1278 tags: FORCE 1278 tags: FORCE
1279 $(call cmd,tags) 1279 $(call cmd,tags)
1280 1280
1281 1281
1282 # Scripts to check various things for consistency 1282 # Scripts to check various things for consistency
1283 # --------------------------------------------------------------------------- 1283 # ---------------------------------------------------------------------------
1284 1284
1285 includecheck: 1285 includecheck:
1286 find * $(RCS_FIND_IGNORE) \ 1286 find * $(RCS_FIND_IGNORE) \
1287 -name '*.[hcS]' -type f -print | sort \ 1287 -name '*.[hcS]' -type f -print | sort \
1288 | xargs $(PERL) -w scripts/checkincludes.pl 1288 | xargs $(PERL) -w scripts/checkincludes.pl
1289 1289
1290 versioncheck: 1290 versioncheck:
1291 find * $(RCS_FIND_IGNORE) \ 1291 find * $(RCS_FIND_IGNORE) \
1292 -name '*.[hcS]' -type f -print | sort \ 1292 -name '*.[hcS]' -type f -print | sort \
1293 | xargs $(PERL) -w scripts/checkversion.pl 1293 | xargs $(PERL) -w scripts/checkversion.pl
1294 1294
1295 buildcheck: 1295 buildcheck:
1296 $(PERL) $(srctree)/scripts/reference_discarded.pl 1296 $(PERL) $(srctree)/scripts/reference_discarded.pl
1297 $(PERL) $(srctree)/scripts/reference_init.pl 1297 $(PERL) $(srctree)/scripts/reference_init.pl
1298 1298
1299 namespacecheck: 1299 namespacecheck:
1300 $(PERL) $(srctree)/scripts/namespace.pl 1300 $(PERL) $(srctree)/scripts/namespace.pl
1301 1301
1302 endif #ifeq ($(config-targets),1) 1302 endif #ifeq ($(config-targets),1)
1303 endif #ifeq ($(mixed-targets),1) 1303 endif #ifeq ($(mixed-targets),1)
1304 1304
1305 .PHONY: checkstack 1305 .PHONY: checkstack
1306 checkstack: 1306 checkstack:
1307 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1307 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1308 $(PERL) $(src)/scripts/checkstack.pl $(ARCH) 1308 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1309 1309
1310 kernelrelease: 1310 kernelrelease:
1311 $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \ 1311 $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \
1312 $(error kernelrelease not valid - run 'make *config' to update it)) 1312 $(error kernelrelease not valid - run 'make *config' to update it))
1313 kernelversion: 1313 kernelversion:
1314 @echo $(KERNELVERSION) 1314 @echo $(KERNELVERSION)
1315 1315
1316 # FIXME Should go into a make.lib or something 1316 # FIXME Should go into a make.lib or something
1317 # =========================================================================== 1317 # ===========================================================================
1318 1318
1319 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1319 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1320 cmd_rmdirs = rm -rf $(rm-dirs) 1320 cmd_rmdirs = rm -rf $(rm-dirs)
1321 1321
1322 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1322 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1323 cmd_rmfiles = rm -f $(rm-files) 1323 cmd_rmfiles = rm -f $(rm-files)
1324 1324
1325 1325
1326 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ 1326 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1327 $(NOSTDINC_FLAGS) $(CPPFLAGS) \ 1327 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1328 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o) 1328 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
1329 1329
1330 quiet_cmd_as_o_S = AS $@ 1330 quiet_cmd_as_o_S = AS $@
1331 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 1331 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1332 1332
1333 # read all saved command lines 1333 # read all saved command lines
1334 1334
1335 targets := $(wildcard $(sort $(targets))) 1335 targets := $(wildcard $(sort $(targets)))
1336 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1336 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1337 1337
1338 ifneq ($(cmd_files),) 1338 ifneq ($(cmd_files),)
1339 $(cmd_files): ; # Do not try to update included dependency files 1339 $(cmd_files): ; # Do not try to update included dependency files
1340 include $(cmd_files) 1340 include $(cmd_files)
1341 endif 1341 endif
1342 1342
1343 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1343 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1344 # Usage: 1344 # Usage:
1345 # $(Q)$(MAKE) $(clean)=dir 1345 # $(Q)$(MAKE) $(clean)=dir
1346 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 1346 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1347 1347
1348 endif # skip-makefile 1348 endif # skip-makefile
1349 1349
1350 FORCE: 1350 FORCE:
1351 1351