Eric Lee / smarc-ti-linux-kernel

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Commit 07aea3a71fc6b07744691eec2dfea705a7b30280

Authored by Sam Ravnborg
Committed by Sam Ravnborg
1 parent 14a036d2dc
Exists in master and in 20 other branches dlt-processor-sdk-linux-03.00.00.04, newt-ti-linux-3.12.y, processor-sdk-linux-01.00.00, processor-sdk-linux-02.00.01, smarc-ti-linux-3.12.10, smarc-ti-linux-3.12.y, smarc-ti-linux-3.14.y, smarc-ti-linux-3.15.y, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04, ti-linux-3.12.y, ti-linux-3.14.y, ti-linux-3.15.y, ti-lsk-linux-4.1.y

kbuild: use in-kernel unifdef 

Let headers_install use in-kernel unifdef

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Showing 3 changed files with 6 additions and 3 deletions Inline Diff

1 VERSION = 2 1 VERSION = 2
2 PATCHLEVEL = 6 2 PATCHLEVEL = 6
3 SUBLEVEL = 18 3 SUBLEVEL = 18
4 EXTRAVERSION = 4 EXTRAVERSION =
5 NAME=Avast! A bilge rat! 5 NAME=Avast! A bilge rat!
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 = $(V)
38 endif 38 endif
39 endif 39 endif
40 ifndef KBUILD_VERBOSE 40 ifndef KBUILD_VERBOSE
41 KBUILD_VERBOSE = 0 41 KBUILD_VERBOSE = 0
42 endif 42 endif
43 43
44 # Call checker as part of compilation of C files 44 # Call checker as part of compilation of C files
45 # Use 'make C=1' to enable checking (sparse, by default) 45 # Use 'make C=1' to enable checking (sparse, by default)
46 # Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....' 46 # Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....'
47 47
48 ifdef C 48 ifdef C
49 ifeq ("$(origin C)", "command line") 49 ifeq ("$(origin C)", "command line")
50 KBUILD_CHECKSRC = $(C) 50 KBUILD_CHECKSRC = $(C)
51 endif 51 endif
52 endif 52 endif
53 ifndef KBUILD_CHECKSRC 53 ifndef KBUILD_CHECKSRC
54 KBUILD_CHECKSRC = 0 54 KBUILD_CHECKSRC = 0
55 endif 55 endif
56 56
57 # Use make M=dir to specify directory of external module to build 57 # Use make M=dir to specify directory of external module to build
58 # Old syntax make ... SUBDIRS=$PWD is still supported 58 # Old syntax make ... SUBDIRS=$PWD is still supported
59 # Setting the environment variable KBUILD_EXTMOD take precedence 59 # Setting the environment variable KBUILD_EXTMOD take precedence
60 ifdef SUBDIRS 60 ifdef SUBDIRS
61 KBUILD_EXTMOD ?= $(SUBDIRS) 61 KBUILD_EXTMOD ?= $(SUBDIRS)
62 endif 62 endif
63 ifdef M 63 ifdef M
64 ifeq ("$(origin M)", "command line") 64 ifeq ("$(origin M)", "command line")
65 KBUILD_EXTMOD := $(M) 65 KBUILD_EXTMOD := $(M)
66 endif 66 endif
67 endif 67 endif
68 68
69 69
70 # kbuild supports saving output files in a separate directory. 70 # kbuild supports saving output files in a separate directory.
71 # To locate output files in a separate directory two syntaxes are supported. 71 # To locate output files in a separate directory two syntaxes are supported.
72 # In both cases the working directory must be the root of the kernel src. 72 # In both cases the working directory must be the root of the kernel src.
73 # 1) O= 73 # 1) O=
74 # Use "make O=dir/to/store/output/files/" 74 # Use "make O=dir/to/store/output/files/"
75 # 75 #
76 # 2) Set KBUILD_OUTPUT 76 # 2) Set KBUILD_OUTPUT
77 # Set the environment variable KBUILD_OUTPUT to point to the directory 77 # Set the environment variable KBUILD_OUTPUT to point to the directory
78 # where the output files shall be placed. 78 # where the output files shall be placed.
79 # export KBUILD_OUTPUT=dir/to/store/output/files/ 79 # export KBUILD_OUTPUT=dir/to/store/output/files/
80 # make 80 # make
81 # 81 #
82 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 82 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
83 # variable. 83 # variable.
84 84
85 85
86 # KBUILD_SRC is set on invocation of make in OBJ directory 86 # KBUILD_SRC is set on invocation of make in OBJ directory
87 # KBUILD_SRC is not intended to be used by the regular user (for now) 87 # KBUILD_SRC is not intended to be used by the regular user (for now)
88 ifeq ($(KBUILD_SRC),) 88 ifeq ($(KBUILD_SRC),)
89 89
90 # OK, Make called in directory where kernel src resides 90 # OK, Make called in directory where kernel src resides
91 # Do we want to locate output files in a separate directory? 91 # Do we want to locate output files in a separate directory?
92 ifdef O 92 ifdef O
93 ifeq ("$(origin O)", "command line") 93 ifeq ("$(origin O)", "command line")
94 KBUILD_OUTPUT := $(O) 94 KBUILD_OUTPUT := $(O)
95 endif 95 endif
96 endif 96 endif
97 97
98 # That's our default target when none is given on the command line 98 # That's our default target when none is given on the command line
99 PHONY := _all 99 PHONY := _all
100 _all: 100 _all:
101 101
102 ifneq ($(KBUILD_OUTPUT),) 102 ifneq ($(KBUILD_OUTPUT),)
103 # Invoke a second make in the output directory, passing relevant variables 103 # Invoke a second make in the output directory, passing relevant variables
104 # check that the output directory actually exists 104 # check that the output directory actually exists
105 saved-output := $(KBUILD_OUTPUT) 105 saved-output := $(KBUILD_OUTPUT)
106 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 106 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
107 $(if $(KBUILD_OUTPUT),, \ 107 $(if $(KBUILD_OUTPUT),, \
108 $(error output directory "$(saved-output)" does not exist)) 108 $(error output directory "$(saved-output)" does not exist))
109 109
110 PHONY += $(MAKECMDGOALS) 110 PHONY += $(MAKECMDGOALS)
111 111
112 $(filter-out _all,$(MAKECMDGOALS)) _all: 112 $(filter-out _all,$(MAKECMDGOALS)) _all:
113 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 113 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
114 KBUILD_SRC=$(CURDIR) \ 114 KBUILD_SRC=$(CURDIR) \
115 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ 115 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
116 116
117 # Leave processing to above invocation of make 117 # Leave processing to above invocation of make
118 skip-makefile := 1 118 skip-makefile := 1
119 endif # ifneq ($(KBUILD_OUTPUT),) 119 endif # ifneq ($(KBUILD_OUTPUT),)
120 endif # ifeq ($(KBUILD_SRC),) 120 endif # ifeq ($(KBUILD_SRC),)
121 121
122 # We process the rest of the Makefile if this is the final invocation of make 122 # We process the rest of the Makefile if this is the final invocation of make
123 ifeq ($(skip-makefile),) 123 ifeq ($(skip-makefile),)
124 124
125 # If building an external module we do not care about the all: rule 125 # If building an external module we do not care about the all: rule
126 # but instead _all depend on modules 126 # but instead _all depend on modules
127 PHONY += all 127 PHONY += all
128 ifeq ($(KBUILD_EXTMOD),) 128 ifeq ($(KBUILD_EXTMOD),)
129 _all: all 129 _all: all
130 else 130 else
131 _all: modules 131 _all: modules
132 endif 132 endif
133 133
134 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 134 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
135 TOPDIR := $(srctree) 135 TOPDIR := $(srctree)
136 # FIXME - TOPDIR is obsolete, use srctree/objtree 136 # FIXME - TOPDIR is obsolete, use srctree/objtree
137 objtree := $(CURDIR) 137 objtree := $(CURDIR)
138 src := $(srctree) 138 src := $(srctree)
139 obj := $(objtree) 139 obj := $(objtree)
140 140
141 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 141 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
142 142
143 export srctree objtree VPATH TOPDIR 143 export srctree objtree VPATH TOPDIR
144 144
145 145
146 # SUBARCH tells the usermode build what the underlying arch is. That is set 146 # SUBARCH tells the usermode build what the underlying arch is. That is set
147 # first, and if a usermode build is happening, the "ARCH=um" on the command 147 # first, and if a usermode build is happening, the "ARCH=um" on the command
148 # line overrides the setting of ARCH below. If a native build is happening, 148 # line overrides the setting of ARCH below. If a native build is happening,
149 # then ARCH is assigned, getting whatever value it gets normally, and 149 # then ARCH is assigned, getting whatever value it gets normally, and
150 # SUBARCH is subsequently ignored. 150 # SUBARCH is subsequently ignored.
151 151
152 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 152 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
153 -e s/arm.*/arm/ -e s/sa110/arm/ \ 153 -e s/arm.*/arm/ -e s/sa110/arm/ \
154 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 154 -e s/s390x/s390/ -e s/parisc64/parisc/ \
155 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) 155 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
156 156
157 # Cross compiling and selecting different set of gcc/bin-utils 157 # Cross compiling and selecting different set of gcc/bin-utils
158 # --------------------------------------------------------------------------- 158 # ---------------------------------------------------------------------------
159 # 159 #
160 # When performing cross compilation for other architectures ARCH shall be set 160 # When performing cross compilation for other architectures ARCH shall be set
161 # to the target architecture. (See arch/* for the possibilities). 161 # to the target architecture. (See arch/* for the possibilities).
162 # ARCH can be set during invocation of make: 162 # ARCH can be set during invocation of make:
163 # make ARCH=ia64 163 # make ARCH=ia64
164 # Another way is to have ARCH set in the environment. 164 # Another way is to have ARCH set in the environment.
165 # The default ARCH is the host where make is executed. 165 # The default ARCH is the host where make is executed.
166 166
167 # CROSS_COMPILE specify the prefix used for all executables used 167 # CROSS_COMPILE specify the prefix used for all executables used
168 # during compilation. Only gcc and related bin-utils executables 168 # during compilation. Only gcc and related bin-utils executables
169 # are prefixed with $(CROSS_COMPILE). 169 # are prefixed with $(CROSS_COMPILE).
170 # CROSS_COMPILE can be set on the command line 170 # CROSS_COMPILE can be set on the command line
171 # make CROSS_COMPILE=ia64-linux- 171 # make CROSS_COMPILE=ia64-linux-
172 # Alternatively CROSS_COMPILE can be set in the environment. 172 # Alternatively CROSS_COMPILE can be set in the environment.
173 # Default value for CROSS_COMPILE is not to prefix executables 173 # Default value for CROSS_COMPILE is not to prefix executables
174 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 174 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
175 175
176 ARCH ?= $(SUBARCH) 176 ARCH ?= $(SUBARCH)
177 CROSS_COMPILE ?= 177 CROSS_COMPILE ?=
178 178
179 # Architecture as present in compile.h 179 # Architecture as present in compile.h
180 UTS_MACHINE := $(ARCH) 180 UTS_MACHINE := $(ARCH)
181 181
182 KCONFIG_CONFIG ?= .config 182 KCONFIG_CONFIG ?= .config
183 183
184 # SHELL used by kbuild 184 # SHELL used by kbuild
185 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 185 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
186 else if [ -x /bin/bash ]; then echo /bin/bash; \ 186 else if [ -x /bin/bash ]; then echo /bin/bash; \
187 else echo sh; fi ; fi) 187 else echo sh; fi ; fi)
188 188
189 HOSTCC = gcc 189 HOSTCC = gcc
190 HOSTCXX = g++ 190 HOSTCXX = g++
191 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 191 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
192 HOSTCXXFLAGS = -O2 192 HOSTCXXFLAGS = -O2
193 193
194 # Decide whether to build built-in, modular, or both. 194 # Decide whether to build built-in, modular, or both.
195 # Normally, just do built-in. 195 # Normally, just do built-in.
196 196
197 KBUILD_MODULES := 197 KBUILD_MODULES :=
198 KBUILD_BUILTIN := 1 198 KBUILD_BUILTIN := 1
199 199
200 # If we have only "make modules", don't compile built-in objects. 200 # If we have only "make modules", don't compile built-in objects.
201 # When we're building modules with modversions, we need to consider 201 # When we're building modules with modversions, we need to consider
202 # the built-in objects during the descend as well, in order to 202 # the built-in objects during the descend as well, in order to
203 # make sure the checksums are up to date before we record them. 203 # make sure the checksums are up to date before we record them.
204 204
205 ifeq ($(MAKECMDGOALS),modules) 205 ifeq ($(MAKECMDGOALS),modules)
206 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 206 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
207 endif 207 endif
208 208
209 # If we have "make <whatever> modules", compile modules 209 # If we have "make <whatever> modules", compile modules
210 # in addition to whatever we do anyway. 210 # in addition to whatever we do anyway.
211 # Just "make" or "make all" shall build modules as well 211 # Just "make" or "make all" shall build modules as well
212 212
213 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 213 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
214 KBUILD_MODULES := 1 214 KBUILD_MODULES := 1
215 endif 215 endif
216 216
217 ifeq ($(MAKECMDGOALS),) 217 ifeq ($(MAKECMDGOALS),)
218 KBUILD_MODULES := 1 218 KBUILD_MODULES := 1
219 endif 219 endif
220 220
221 export KBUILD_MODULES KBUILD_BUILTIN 221 export KBUILD_MODULES KBUILD_BUILTIN
222 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 222 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
223 223
224 # Beautify output 224 # Beautify output
225 # --------------------------------------------------------------------------- 225 # ---------------------------------------------------------------------------
226 # 226 #
227 # Normally, we echo the whole command before executing it. By making 227 # Normally, we echo the whole command before executing it. By making
228 # that echo $($(quiet)$(cmd)), we now have the possibility to set 228 # that echo $($(quiet)$(cmd)), we now have the possibility to set
229 # $(quiet) to choose other forms of output instead, e.g. 229 # $(quiet) to choose other forms of output instead, e.g.
230 # 230 #
231 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 231 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
232 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 232 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
233 # 233 #
234 # If $(quiet) is empty, the whole command will be printed. 234 # If $(quiet) is empty, the whole command will be printed.
235 # If it is set to "quiet_", only the short version will be printed. 235 # If it is set to "quiet_", only the short version will be printed.
236 # If it is set to "silent_", nothing will be printed at all, since 236 # If it is set to "silent_", nothing will be printed at all, since
237 # the variable $(silent_cmd_cc_o_c) doesn't exist. 237 # the variable $(silent_cmd_cc_o_c) doesn't exist.
238 # 238 #
239 # A simple variant is to prefix commands with $(Q) - that's useful 239 # A simple variant is to prefix commands with $(Q) - that's useful
240 # for commands that shall be hidden in non-verbose mode. 240 # for commands that shall be hidden in non-verbose mode.
241 # 241 #
242 # $(Q)ln $@ :< 242 # $(Q)ln $@ :<
243 # 243 #
244 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 244 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
245 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 245 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
246 246
247 ifeq ($(KBUILD_VERBOSE),1) 247 ifeq ($(KBUILD_VERBOSE),1)
248 quiet = 248 quiet =
249 Q = 249 Q =
250 else 250 else
251 quiet=quiet_ 251 quiet=quiet_
252 Q = @ 252 Q = @
253 endif 253 endif
254 254
255 # If the user is running make -s (silent mode), suppress echoing of 255 # If the user is running make -s (silent mode), suppress echoing of
256 # commands 256 # commands
257 257
258 ifneq ($(findstring s,$(MAKEFLAGS)),) 258 ifneq ($(findstring s,$(MAKEFLAGS)),)
259 quiet=silent_ 259 quiet=silent_
260 endif 260 endif
261 261
262 export quiet Q KBUILD_VERBOSE 262 export quiet Q KBUILD_VERBOSE
263 263
264 264
265 # Look for make include files relative to root of kernel src 265 # Look for make include files relative to root of kernel src
266 MAKEFLAGS += --include-dir=$(srctree) 266 MAKEFLAGS += --include-dir=$(srctree)
267 267
268 # We need some generic definitions 268 # We need some generic definitions
269 include $(srctree)/scripts/Kbuild.include 269 include $(srctree)/scripts/Kbuild.include
270 270
271 # Do not use make's built-in rules and variables 271 # Do not use make's built-in rules and variables
272 # This increases performance and avoid hard-to-debug behavour 272 # This increases performance and avoid hard-to-debug behavour
273 MAKEFLAGS += -rR 273 MAKEFLAGS += -rR
274 274
275 # Make variables (CC, etc...) 275 # Make variables (CC, etc...)
276 276
277 AS = $(CROSS_COMPILE)as 277 AS = $(CROSS_COMPILE)as
278 LD = $(CROSS_COMPILE)ld 278 LD = $(CROSS_COMPILE)ld
279 CC = $(CROSS_COMPILE)gcc 279 CC = $(CROSS_COMPILE)gcc
280 CPP = $(CC) -E 280 CPP = $(CC) -E
281 AR = $(CROSS_COMPILE)ar 281 AR = $(CROSS_COMPILE)ar
282 NM = $(CROSS_COMPILE)nm 282 NM = $(CROSS_COMPILE)nm
283 STRIP = $(CROSS_COMPILE)strip 283 STRIP = $(CROSS_COMPILE)strip
284 OBJCOPY = $(CROSS_COMPILE)objcopy 284 OBJCOPY = $(CROSS_COMPILE)objcopy
285 OBJDUMP = $(CROSS_COMPILE)objdump 285 OBJDUMP = $(CROSS_COMPILE)objdump
286 AWK = awk 286 AWK = awk
287 GENKSYMS = scripts/genksyms/genksyms 287 GENKSYMS = scripts/genksyms/genksyms
288 DEPMOD = /sbin/depmod 288 DEPMOD = /sbin/depmod
289 KALLSYMS = scripts/kallsyms 289 KALLSYMS = scripts/kallsyms
290 PERL = perl 290 PERL = perl
291 CHECK = sparse 291 CHECK = sparse
292 292
293 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) 293 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
294 MODFLAGS = -DMODULE 294 MODFLAGS = -DMODULE
295 CFLAGS_MODULE = $(MODFLAGS) 295 CFLAGS_MODULE = $(MODFLAGS)
296 AFLAGS_MODULE = $(MODFLAGS) 296 AFLAGS_MODULE = $(MODFLAGS)
297 LDFLAGS_MODULE = -r 297 LDFLAGS_MODULE = -r
298 CFLAGS_KERNEL = 298 CFLAGS_KERNEL =
299 AFLAGS_KERNEL = 299 AFLAGS_KERNEL =
300 300
301 301
302 # Use LINUXINCLUDE when you must reference the include/ directory. 302 # Use LINUXINCLUDE when you must reference the include/ directory.
303 # Needed to be compatible with the O= option 303 # Needed to be compatible with the O= option
304 LINUXINCLUDE := -Iinclude \ 304 LINUXINCLUDE := -Iinclude \
305 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ 305 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
306 -include include/linux/autoconf.h 306 -include include/linux/autoconf.h
307 307
308 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) 308 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
309 309
310 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 310 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
311 -fno-strict-aliasing -fno-common 311 -fno-strict-aliasing -fno-common
312 AFLAGS := -D__ASSEMBLY__ 312 AFLAGS := -D__ASSEMBLY__
313 313
314 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 314 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
315 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 315 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
316 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 316 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
317 317
318 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 318 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
319 export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 319 export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
320 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE 320 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
321 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 321 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
322 322
323 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 323 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
324 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 324 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
325 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 325 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
326 326
327 # When compiling out-of-tree modules, put MODVERDIR in the module 327 # When compiling out-of-tree modules, put MODVERDIR in the module
328 # tree rather than in the kernel tree. The kernel tree might 328 # tree rather than in the kernel tree. The kernel tree might
329 # even be read-only. 329 # even be read-only.
330 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 330 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
331 331
332 # Files to ignore in find ... statements 332 # Files to ignore in find ... statements
333 333
334 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 334 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
335 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 335 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
336 336
337 # =========================================================================== 337 # ===========================================================================
338 # Rules shared between *config targets and build targets 338 # Rules shared between *config targets and build targets
339 339
340 # Basic helpers built in scripts/ 340 # Basic helpers built in scripts/
341 PHONY += scripts_basic 341 PHONY += scripts_basic
342 scripts_basic: 342 scripts_basic:
343 $(Q)$(MAKE) $(build)=scripts/basic 343 $(Q)$(MAKE) $(build)=scripts/basic
344 344
345 # To avoid any implicit rule to kick in, define an empty command. 345 # To avoid any implicit rule to kick in, define an empty command.
346 scripts/basic/%: scripts_basic ; 346 scripts/basic/%: scripts_basic ;
347 347
348 PHONY += outputmakefile 348 PHONY += outputmakefile
349 # outputmakefile generates a Makefile in the output directory, if using a 349 # outputmakefile generates a Makefile in the output directory, if using a
350 # separate output directory. This allows convenient use of make in the 350 # separate output directory. This allows convenient use of make in the
351 # output directory. 351 # output directory.
352 outputmakefile: 352 outputmakefile:
353 ifneq ($(KBUILD_SRC),) 353 ifneq ($(KBUILD_SRC),)
354 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 354 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
355 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 355 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
356 endif 356 endif
357 357
358 # To make sure we do not include .config for any of the *config targets 358 # To make sure we do not include .config for any of the *config targets
359 # catch them early, and hand them over to scripts/kconfig/Makefile 359 # catch them early, and hand them over to scripts/kconfig/Makefile
360 # It is allowed to specify more targets when calling make, including 360 # It is allowed to specify more targets when calling make, including
361 # mixing *config targets and build targets. 361 # mixing *config targets and build targets.
362 # For example 'make oldconfig all'. 362 # For example 'make oldconfig all'.
363 # Detect when mixed targets is specified, and make a second invocation 363 # Detect when mixed targets is specified, and make a second invocation
364 # of make so .config is not included in this case either (for *config). 364 # of make so .config is not included in this case either (for *config).
365 365
366 no-dot-config-targets := clean mrproper distclean \ 366 no-dot-config-targets := clean mrproper distclean \
367 cscope TAGS tags help %docs check% \ 367 cscope TAGS tags help %docs check% \
368 include/linux/version.h headers_% \ 368 include/linux/version.h headers_% \
369 kernelrelease kernelversion 369 kernelrelease kernelversion
370 370
371 config-targets := 0 371 config-targets := 0
372 mixed-targets := 0 372 mixed-targets := 0
373 dot-config := 1 373 dot-config := 1
374 374
375 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 375 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
376 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 376 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
377 dot-config := 0 377 dot-config := 0
378 endif 378 endif
379 endif 379 endif
380 380
381 ifeq ($(KBUILD_EXTMOD),) 381 ifeq ($(KBUILD_EXTMOD),)
382 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 382 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
383 config-targets := 1 383 config-targets := 1
384 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 384 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
385 mixed-targets := 1 385 mixed-targets := 1
386 endif 386 endif
387 endif 387 endif
388 endif 388 endif
389 389
390 ifeq ($(mixed-targets),1) 390 ifeq ($(mixed-targets),1)
391 # =========================================================================== 391 # ===========================================================================
392 # We're called with mixed targets (*config and build targets). 392 # We're called with mixed targets (*config and build targets).
393 # Handle them one by one. 393 # Handle them one by one.
394 394
395 %:: FORCE 395 %:: FORCE
396 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 396 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
397 397
398 else 398 else
399 ifeq ($(config-targets),1) 399 ifeq ($(config-targets),1)
400 # =========================================================================== 400 # ===========================================================================
401 # *config targets only - make sure prerequisites are updated, and descend 401 # *config targets only - make sure prerequisites are updated, and descend
402 # in scripts/kconfig to make the *config target 402 # in scripts/kconfig to make the *config target
403 403
404 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 404 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
405 # KBUILD_DEFCONFIG may point out an alternative default configuration 405 # KBUILD_DEFCONFIG may point out an alternative default configuration
406 # used for 'make defconfig' 406 # used for 'make defconfig'
407 include $(srctree)/arch/$(ARCH)/Makefile 407 include $(srctree)/arch/$(ARCH)/Makefile
408 export KBUILD_DEFCONFIG 408 export KBUILD_DEFCONFIG
409 409
410 config %config: scripts_basic outputmakefile FORCE 410 config %config: scripts_basic outputmakefile FORCE
411 $(Q)mkdir -p include/linux include/config 411 $(Q)mkdir -p include/linux include/config
412 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 412 $(Q)$(MAKE) $(build)=scripts/kconfig $@
413 413
414 else 414 else
415 # =========================================================================== 415 # ===========================================================================
416 # Build targets only - this includes vmlinux, arch specific targets, clean 416 # Build targets only - this includes vmlinux, arch specific targets, clean
417 # targets and others. In general all targets except *config targets. 417 # targets and others. In general all targets except *config targets.
418 418
419 ifeq ($(KBUILD_EXTMOD),) 419 ifeq ($(KBUILD_EXTMOD),)
420 # Additional helpers built in scripts/ 420 # Additional helpers built in scripts/
421 # Carefully list dependencies so we do not try to build scripts twice 421 # Carefully list dependencies so we do not try to build scripts twice
422 # in parallel 422 # in parallel
423 PHONY += scripts 423 PHONY += scripts
424 scripts: scripts_basic include/config/auto.conf 424 scripts: scripts_basic include/config/auto.conf
425 $(Q)$(MAKE) $(build)=$(@) 425 $(Q)$(MAKE) $(build)=$(@)
426 426
427 # Objects we will link into vmlinux / subdirs we need to visit 427 # Objects we will link into vmlinux / subdirs we need to visit
428 init-y := init/ 428 init-y := init/
429 drivers-y := drivers/ sound/ 429 drivers-y := drivers/ sound/
430 net-y := net/ 430 net-y := net/
431 libs-y := lib/ 431 libs-y := lib/
432 core-y := usr/ 432 core-y := usr/
433 endif # KBUILD_EXTMOD 433 endif # KBUILD_EXTMOD
434 434
435 ifeq ($(dot-config),1) 435 ifeq ($(dot-config),1)
436 # Read in config 436 # Read in config
437 -include include/config/auto.conf 437 -include include/config/auto.conf
438 438
439 ifeq ($(KBUILD_EXTMOD),) 439 ifeq ($(KBUILD_EXTMOD),)
440 # Read in dependencies to all Kconfig* files, make sure to run 440 # Read in dependencies to all Kconfig* files, make sure to run
441 # oldconfig if changes are detected. 441 # oldconfig if changes are detected.
442 -include include/config/auto.conf.cmd 442 -include include/config/auto.conf.cmd
443 443
444 # To avoid any implicit rule to kick in, define an empty command 444 # To avoid any implicit rule to kick in, define an empty command
445 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 445 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
446 446
447 # If .config is newer than include/config/auto.conf, someone tinkered 447 # If .config is newer than include/config/auto.conf, someone tinkered
448 # with it and forgot to run make oldconfig. 448 # with it and forgot to run make oldconfig.
449 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 449 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
450 # we execute the config step to be sure to catch updated Kconfig files 450 # we execute the config step to be sure to catch updated Kconfig files
451 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 451 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
452 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 452 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
453 else 453 else
454 # external modules needs include/linux/autoconf.h and include/config/auto.conf 454 # external modules needs include/linux/autoconf.h and include/config/auto.conf
455 # but do not care if they are up-to-date. Use auto.conf to trigger the test 455 # but do not care if they are up-to-date. Use auto.conf to trigger the test
456 PHONY += include/config/auto.conf 456 PHONY += include/config/auto.conf
457 457
458 include/config/auto.conf: 458 include/config/auto.conf:
459 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ 459 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \
460 echo; \ 460 echo; \
461 echo " ERROR: Kernel configuration is invalid."; \ 461 echo " ERROR: Kernel configuration is invalid."; \
462 echo " include/linux/autoconf.h or $@ are missing."; \ 462 echo " include/linux/autoconf.h or $@ are missing."; \
463 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 463 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
464 echo; \ 464 echo; \
465 /bin/false) 465 /bin/false)
466 466
467 endif # KBUILD_EXTMOD 467 endif # KBUILD_EXTMOD
468 468
469 else 469 else
470 # Dummy target needed, because used as prerequisite 470 # Dummy target needed, because used as prerequisite
471 include/config/auto.conf: ; 471 include/config/auto.conf: ;
472 endif # $(dot-config) 472 endif # $(dot-config)
473 473
474 # The all: target is the default when no target is given on the 474 # The all: target is the default when no target is given on the
475 # command line. 475 # command line.
476 # This allow a user to issue only 'make' to build a kernel including modules 476 # This allow a user to issue only 'make' to build a kernel including modules
477 # Defaults vmlinux but it is usually overridden in the arch makefile 477 # Defaults vmlinux but it is usually overridden in the arch makefile
478 all: vmlinux 478 all: vmlinux
479 479
480 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 480 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
481 CFLAGS += -Os 481 CFLAGS += -Os
482 else 482 else
483 CFLAGS += -O2 483 CFLAGS += -O2
484 endif 484 endif
485 485
486 include $(srctree)/arch/$(ARCH)/Makefile 486 include $(srctree)/arch/$(ARCH)/Makefile
487 487
488 ifdef CONFIG_FRAME_POINTER 488 ifdef CONFIG_FRAME_POINTER
489 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) 489 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
490 else 490 else
491 CFLAGS += -fomit-frame-pointer 491 CFLAGS += -fomit-frame-pointer
492 endif 492 endif
493 493
494 ifdef CONFIG_UNWIND_INFO 494 ifdef CONFIG_UNWIND_INFO
495 CFLAGS += -fasynchronous-unwind-tables 495 CFLAGS += -fasynchronous-unwind-tables
496 endif 496 endif
497 497
498 ifdef CONFIG_DEBUG_INFO 498 ifdef CONFIG_DEBUG_INFO
499 CFLAGS += -g 499 CFLAGS += -g
500 endif 500 endif
501 501
502 # Force gcc to behave correct even for buggy distributions 502 # Force gcc to behave correct even for buggy distributions
503 CFLAGS += $(call cc-option, -fno-stack-protector) 503 CFLAGS += $(call cc-option, -fno-stack-protector)
504 504
505 # arch Makefile may override CC so keep this after arch Makefile is included 505 # arch Makefile may override CC so keep this after arch Makefile is included
506 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 506 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
507 CHECKFLAGS += $(NOSTDINC_FLAGS) 507 CHECKFLAGS += $(NOSTDINC_FLAGS)
508 508
509 # warn about C99 declaration after statement 509 # warn about C99 declaration after statement
510 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 510 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
511 511
512 # disable pointer signed / unsigned warnings in gcc 4.0 512 # disable pointer signed / unsigned warnings in gcc 4.0
513 CFLAGS += $(call cc-option,-Wno-pointer-sign,) 513 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
514 514
515 # Default kernel image to build when no specific target is given. 515 # Default kernel image to build when no specific target is given.
516 # KBUILD_IMAGE may be overruled on the command line or 516 # KBUILD_IMAGE may be overruled on the command line or
517 # set in the environment 517 # set in the environment
518 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 518 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
519 # this default value 519 # this default value
520 export KBUILD_IMAGE ?= vmlinux 520 export KBUILD_IMAGE ?= vmlinux
521 521
522 # 522 #
523 # INSTALL_PATH specifies where to place the updated kernel and system map 523 # INSTALL_PATH specifies where to place the updated kernel and system map
524 # images. Default is /boot, but you can set it to other values 524 # images. Default is /boot, but you can set it to other values
525 export INSTALL_PATH ?= /boot 525 export INSTALL_PATH ?= /boot
526 526
527 # 527 #
528 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 528 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
529 # relocations required by build roots. This is not defined in the 529 # relocations required by build roots. This is not defined in the
530 # makefile but the argument can be passed to make if needed. 530 # makefile but the argument can be passed to make if needed.
531 # 531 #
532 532
533 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 533 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
534 export MODLIB 534 export MODLIB
535 535
536 # 536 #
537 # INSTALL_MOD_STRIP, if defined, will cause modules to be 537 # INSTALL_MOD_STRIP, if defined, will cause modules to be
538 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 538 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
539 # the default option --strip-debug will be used. Otherwise, 539 # the default option --strip-debug will be used. Otherwise,
540 # INSTALL_MOD_STRIP will used as the options to the strip command. 540 # INSTALL_MOD_STRIP will used as the options to the strip command.
541 541
542 ifdef INSTALL_MOD_STRIP 542 ifdef INSTALL_MOD_STRIP
543 ifeq ($(INSTALL_MOD_STRIP),1) 543 ifeq ($(INSTALL_MOD_STRIP),1)
544 mod_strip_cmd = $(STRIP) --strip-debug 544 mod_strip_cmd = $(STRIP) --strip-debug
545 else 545 else
546 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 546 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
547 endif # INSTALL_MOD_STRIP=1 547 endif # INSTALL_MOD_STRIP=1
548 else 548 else
549 mod_strip_cmd = true 549 mod_strip_cmd = true
550 endif # INSTALL_MOD_STRIP 550 endif # INSTALL_MOD_STRIP
551 export mod_strip_cmd 551 export mod_strip_cmd
552 552
553 553
554 ifeq ($(KBUILD_EXTMOD),) 554 ifeq ($(KBUILD_EXTMOD),)
555 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 555 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
556 556
557 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 557 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
558 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 558 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
559 $(net-y) $(net-m) $(libs-y) $(libs-m))) 559 $(net-y) $(net-m) $(libs-y) $(libs-m)))
560 560
561 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 561 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
562 $(init-n) $(init-) \ 562 $(init-n) $(init-) \
563 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 563 $(core-n) $(core-) $(drivers-n) $(drivers-) \
564 $(net-n) $(net-) $(libs-n) $(libs-)))) 564 $(net-n) $(net-) $(libs-n) $(libs-))))
565 565
566 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 566 init-y := $(patsubst %/, %/built-in.o, $(init-y))
567 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 567 core-y := $(patsubst %/, %/built-in.o, $(core-y))
568 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 568 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
569 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 569 net-y := $(patsubst %/, %/built-in.o, $(net-y))
570 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 570 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
571 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 571 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
572 libs-y := $(libs-y1) $(libs-y2) 572 libs-y := $(libs-y1) $(libs-y2)
573 573
574 # Build vmlinux 574 # Build vmlinux
575 # --------------------------------------------------------------------------- 575 # ---------------------------------------------------------------------------
576 # vmlinux is built from the objects selected by $(vmlinux-init) and 576 # vmlinux is built from the objects selected by $(vmlinux-init) and
577 # $(vmlinux-main). Most are built-in.o files from top-level directories 577 # $(vmlinux-main). Most are built-in.o files from top-level directories
578 # in the kernel tree, others are specified in arch/$(ARCH)Makefile. 578 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
579 # Ordering when linking is important, and $(vmlinux-init) must be first. 579 # Ordering when linking is important, and $(vmlinux-init) must be first.
580 # 580 #
581 # vmlinux 581 # vmlinux
582 # ^ 582 # ^
583 # | 583 # |
584 # +-< $(vmlinux-init) 584 # +-< $(vmlinux-init)
585 # | +--< init/version.o + more 585 # | +--< init/version.o + more
586 # | 586 # |
587 # +--< $(vmlinux-main) 587 # +--< $(vmlinux-main)
588 # | +--< driver/built-in.o mm/built-in.o + more 588 # | +--< driver/built-in.o mm/built-in.o + more
589 # | 589 # |
590 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 590 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
591 # 591 #
592 # vmlinux version (uname -v) cannot be updated during normal 592 # vmlinux version (uname -v) cannot be updated during normal
593 # descending-into-subdirs phase since we do not yet know if we need to 593 # descending-into-subdirs phase since we do not yet know if we need to
594 # update vmlinux. 594 # update vmlinux.
595 # Therefore this step is delayed until just before final link of vmlinux - 595 # Therefore this step is delayed until just before final link of vmlinux -
596 # except in the kallsyms case where it is done just before adding the 596 # except in the kallsyms case where it is done just before adding the
597 # symbols to the kernel. 597 # symbols to the kernel.
598 # 598 #
599 # System.map is generated to document addresses of all kernel symbols 599 # System.map is generated to document addresses of all kernel symbols
600 600
601 vmlinux-init := $(head-y) $(init-y) 601 vmlinux-init := $(head-y) $(init-y)
602 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 602 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
603 vmlinux-all := $(vmlinux-init) $(vmlinux-main) 603 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
604 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds 604 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
605 605
606 # Rule to link vmlinux - also used during CONFIG_KALLSYMS 606 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
607 # May be overridden by arch/$(ARCH)/Makefile 607 # May be overridden by arch/$(ARCH)/Makefile
608 quiet_cmd_vmlinux__ ?= LD $@ 608 quiet_cmd_vmlinux__ ?= LD $@
609 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 609 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
610 -T $(vmlinux-lds) $(vmlinux-init) \ 610 -T $(vmlinux-lds) $(vmlinux-init) \
611 --start-group $(vmlinux-main) --end-group \ 611 --start-group $(vmlinux-main) --end-group \
612 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 612 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
613 613
614 # Generate new vmlinux version 614 # Generate new vmlinux version
615 quiet_cmd_vmlinux_version = GEN .version 615 quiet_cmd_vmlinux_version = GEN .version
616 cmd_vmlinux_version = set -e; \ 616 cmd_vmlinux_version = set -e; \
617 if [ ! -r .version ]; then \ 617 if [ ! -r .version ]; then \
618 rm -f .version; \ 618 rm -f .version; \
619 echo 1 >.version; \ 619 echo 1 >.version; \
620 else \ 620 else \
621 mv .version .old_version; \ 621 mv .version .old_version; \
622 expr 0$$(cat .old_version) + 1 >.version; \ 622 expr 0$$(cat .old_version) + 1 >.version; \
623 fi; \ 623 fi; \
624 $(MAKE) $(build)=init 624 $(MAKE) $(build)=init
625 625
626 # Generate System.map 626 # Generate System.map
627 quiet_cmd_sysmap = SYSMAP 627 quiet_cmd_sysmap = SYSMAP
628 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 628 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
629 629
630 # Link of vmlinux 630 # Link of vmlinux
631 # If CONFIG_KALLSYMS is set .version is already updated 631 # If CONFIG_KALLSYMS is set .version is already updated
632 # Generate System.map and verify that the content is consistent 632 # Generate System.map and verify that the content is consistent
633 # Use + in front of the vmlinux_version rule to silent warning with make -j2 633 # Use + in front of the vmlinux_version rule to silent warning with make -j2
634 # First command is ':' to allow us to use + in front of the rule 634 # First command is ':' to allow us to use + in front of the rule
635 define rule_vmlinux__ 635 define rule_vmlinux__
636 : 636 :
637 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 637 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
638 638
639 $(call cmd,vmlinux__) 639 $(call cmd,vmlinux__)
640 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 640 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
641 641
642 $(Q)$(if $($(quiet)cmd_sysmap), \ 642 $(Q)$(if $($(quiet)cmd_sysmap), \
643 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 643 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
644 $(cmd_sysmap) $@ System.map; \ 644 $(cmd_sysmap) $@ System.map; \
645 if [ $$? -ne 0 ]; then \ 645 if [ $$? -ne 0 ]; then \
646 rm -f $@; \ 646 rm -f $@; \
647 /bin/false; \ 647 /bin/false; \
648 fi; 648 fi;
649 $(verify_kallsyms) 649 $(verify_kallsyms)
650 endef 650 endef
651 651
652 652
653 ifdef CONFIG_KALLSYMS 653 ifdef CONFIG_KALLSYMS
654 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 654 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
655 # It's a three stage process: 655 # It's a three stage process:
656 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 656 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
657 # empty 657 # empty
658 # Running kallsyms on that gives us .tmp_kallsyms1.o with 658 # Running kallsyms on that gives us .tmp_kallsyms1.o with
659 # the right size - vmlinux version (uname -v) is updated during this step 659 # the right size - vmlinux version (uname -v) is updated during this step
660 # o .tmp_vmlinux2 now has a __kallsyms section of the right size, 660 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
661 # but due to the added section, some addresses have shifted. 661 # but due to the added section, some addresses have shifted.
662 # From here, we generate a correct .tmp_kallsyms2.o 662 # From here, we generate a correct .tmp_kallsyms2.o
663 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 663 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
664 # o Verify that the System.map from vmlinux matches the map from 664 # o Verify that the System.map from vmlinux matches the map from
665 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 665 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
666 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using 666 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
667 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 667 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
668 # temporary bypass to allow the kernel to be built while the 668 # temporary bypass to allow the kernel to be built while the
669 # maintainers work out what went wrong with kallsyms. 669 # maintainers work out what went wrong with kallsyms.
670 670
671 ifdef CONFIG_KALLSYMS_EXTRA_PASS 671 ifdef CONFIG_KALLSYMS_EXTRA_PASS
672 last_kallsyms := 3 672 last_kallsyms := 3
673 else 673 else
674 last_kallsyms := 2 674 last_kallsyms := 2
675 endif 675 endif
676 676
677 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 677 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
678 678
679 define verify_kallsyms 679 define verify_kallsyms
680 $(Q)$(if $($(quiet)cmd_sysmap), \ 680 $(Q)$(if $($(quiet)cmd_sysmap), \
681 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 681 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
682 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 682 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
683 $(Q)cmp -s System.map .tmp_System.map || \ 683 $(Q)cmp -s System.map .tmp_System.map || \
684 (echo Inconsistent kallsyms data; \ 684 (echo Inconsistent kallsyms data; \
685 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ 685 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
686 rm .tmp_kallsyms* ; /bin/false ) 686 rm .tmp_kallsyms* ; /bin/false )
687 endef 687 endef
688 688
689 # Update vmlinux version before link 689 # Update vmlinux version before link
690 # Use + in front of this rule to silent warning about make -j1 690 # Use + in front of this rule to silent warning about make -j1
691 # First command is ':' to allow us to use + in front of this rule 691 # First command is ':' to allow us to use + in front of this rule
692 cmd_ksym_ld = $(cmd_vmlinux__) 692 cmd_ksym_ld = $(cmd_vmlinux__)
693 define rule_ksym_ld 693 define rule_ksym_ld
694 : 694 :
695 +$(call cmd,vmlinux_version) 695 +$(call cmd,vmlinux_version)
696 $(call cmd,vmlinux__) 696 $(call cmd,vmlinux__)
697 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 697 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
698 endef 698 endef
699 699
700 # Generate .S file with all kernel symbols 700 # Generate .S file with all kernel symbols
701 quiet_cmd_kallsyms = KSYM $@ 701 quiet_cmd_kallsyms = KSYM $@
702 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 702 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
703 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 703 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
704 704
705 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 705 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
706 $(call if_changed_dep,as_o_S) 706 $(call if_changed_dep,as_o_S)
707 707
708 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 708 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
709 $(call cmd,kallsyms) 709 $(call cmd,kallsyms)
710 710
711 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 711 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
712 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 712 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
713 $(call if_changed_rule,ksym_ld) 713 $(call if_changed_rule,ksym_ld)
714 714
715 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 715 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
716 $(call if_changed,vmlinux__) 716 $(call if_changed,vmlinux__)
717 717
718 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 718 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
719 $(call if_changed,vmlinux__) 719 $(call if_changed,vmlinux__)
720 720
721 # Needs to visit scripts/ before $(KALLSYMS) can be used. 721 # Needs to visit scripts/ before $(KALLSYMS) can be used.
722 $(KALLSYMS): scripts ; 722 $(KALLSYMS): scripts ;
723 723
724 # Generate some data for debugging strange kallsyms problems 724 # Generate some data for debugging strange kallsyms problems
725 debug_kallsyms: .tmp_map$(last_kallsyms) 725 debug_kallsyms: .tmp_map$(last_kallsyms)
726 726
727 .tmp_map%: .tmp_vmlinux% FORCE 727 .tmp_map%: .tmp_vmlinux% FORCE
728 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 728 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
729 729
730 .tmp_map3: .tmp_map2 730 .tmp_map3: .tmp_map2
731 731
732 .tmp_map2: .tmp_map1 732 .tmp_map2: .tmp_map1
733 733
734 endif # ifdef CONFIG_KALLSYMS 734 endif # ifdef CONFIG_KALLSYMS
735 735
736 # vmlinux image - including updated kernel symbols 736 # vmlinux image - including updated kernel symbols
737 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE 737 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
738 $(call if_changed_rule,vmlinux__) 738 $(call if_changed_rule,vmlinux__)
739 $(Q)rm -f .old_version 739 $(Q)rm -f .old_version
740 740
741 # The actual objects are generated when descending, 741 # The actual objects are generated when descending,
742 # make sure no implicit rule kicks in 742 # make sure no implicit rule kicks in
743 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 743 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
744 744
745 # Handle descending into subdirectories listed in $(vmlinux-dirs) 745 # Handle descending into subdirectories listed in $(vmlinux-dirs)
746 # Preset locale variables to speed up the build process. Limit locale 746 # Preset locale variables to speed up the build process. Limit locale
747 # tweaks to this spot to avoid wrong language settings when running 747 # tweaks to this spot to avoid wrong language settings when running
748 # make menuconfig etc. 748 # make menuconfig etc.
749 # Error messages still appears in the original language 749 # Error messages still appears in the original language
750 750
751 PHONY += $(vmlinux-dirs) 751 PHONY += $(vmlinux-dirs)
752 $(vmlinux-dirs): prepare scripts 752 $(vmlinux-dirs): prepare scripts
753 $(Q)$(MAKE) $(build)=$@ 753 $(Q)$(MAKE) $(build)=$@
754 754
755 # Build the kernel release string 755 # Build the kernel release string
756 # The KERNELRELEASE is stored in a file named include/config/kernel.release 756 # The KERNELRELEASE is stored in a file named include/config/kernel.release
757 # to be used when executing for example make install or make modules_install 757 # to be used when executing for example make install or make modules_install
758 # 758 #
759 # Take the contents of any files called localversion* and the config 759 # Take the contents of any files called localversion* and the config
760 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. 760 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
761 # LOCALVERSION from the command line override all of this 761 # LOCALVERSION from the command line override all of this
762 762
763 nullstring := 763 nullstring :=
764 space := $(nullstring) # end of line 764 space := $(nullstring) # end of line
765 765
766 ___localver = $(objtree)/localversion* $(srctree)/localversion* 766 ___localver = $(objtree)/localversion* $(srctree)/localversion*
767 __localver = $(sort $(wildcard $(___localver))) 767 __localver = $(sort $(wildcard $(___localver)))
768 # skip backup files (containing '~') 768 # skip backup files (containing '~')
769 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) 769 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
770 770
771 localver = $(subst $(space),, \ 771 localver = $(subst $(space),, \
772 $(shell cat /dev/null $(_localver)) \ 772 $(shell cat /dev/null $(_localver)) \
773 $(patsubst "%",%,$(CONFIG_LOCALVERSION))) 773 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
774 774
775 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called 775 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
776 # and if the SCM is know a tag from the SCM is appended. 776 # and if the SCM is know a tag from the SCM is appended.
777 # The appended tag is determined by the SCM used. 777 # The appended tag is determined by the SCM used.
778 # 778 #
779 # Currently, only git is supported. 779 # Currently, only git is supported.
780 # Other SCMs can edit scripts/setlocalversion and add the appropriate 780 # Other SCMs can edit scripts/setlocalversion and add the appropriate
781 # checks as needed. 781 # checks as needed.
782 ifdef CONFIG_LOCALVERSION_AUTO 782 ifdef CONFIG_LOCALVERSION_AUTO
783 _localver-auto = $(shell $(CONFIG_SHELL) \ 783 _localver-auto = $(shell $(CONFIG_SHELL) \
784 $(srctree)/scripts/setlocalversion $(srctree)) 784 $(srctree)/scripts/setlocalversion $(srctree))
785 localver-auto = $(LOCALVERSION)$(_localver-auto) 785 localver-auto = $(LOCALVERSION)$(_localver-auto)
786 endif 786 endif
787 787
788 localver-full = $(localver)$(localver-auto) 788 localver-full = $(localver)$(localver-auto)
789 789
790 # Store (new) KERNELRELASE string in include/config/kernel.release 790 # Store (new) KERNELRELASE string in include/config/kernel.release
791 kernelrelease = $(KERNELVERSION)$(localver-full) 791 kernelrelease = $(KERNELVERSION)$(localver-full)
792 include/config/kernel.release: include/config/auto.conf FORCE 792 include/config/kernel.release: include/config/auto.conf FORCE
793 $(Q)rm -f $@ 793 $(Q)rm -f $@
794 $(Q)echo $(kernelrelease) > $@ 794 $(Q)echo $(kernelrelease) > $@
795 795
796 796
797 # Things we need to do before we recursively start building the kernel 797 # Things we need to do before we recursively start building the kernel
798 # or the modules are listed in "prepare". 798 # or the modules are listed in "prepare".
799 # A multi level approach is used. prepareN is processed before prepareN-1. 799 # A multi level approach is used. prepareN is processed before prepareN-1.
800 # archprepare is used in arch Makefiles and when processed asm symlink, 800 # archprepare is used in arch Makefiles and when processed asm symlink,
801 # version.h and scripts_basic is processed / created. 801 # version.h and scripts_basic is processed / created.
802 802
803 # Listed in dependency order 803 # Listed in dependency order
804 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 804 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
805 805
806 # prepare-all is deprecated, use prepare as valid replacement 806 # prepare-all is deprecated, use prepare as valid replacement
807 PHONY += prepare-all 807 PHONY += prepare-all
808 808
809 # prepare3 is used to check if we are building in a separate output directory, 809 # prepare3 is used to check if we are building in a separate output directory,
810 # and if so do: 810 # and if so do:
811 # 1) Check that make has not been executed in the kernel src $(srctree) 811 # 1) Check that make has not been executed in the kernel src $(srctree)
812 # 2) Create the include2 directory, used for the second asm symlink 812 # 2) Create the include2 directory, used for the second asm symlink
813 prepare3: include/config/kernel.release 813 prepare3: include/config/kernel.release
814 ifneq ($(KBUILD_SRC),) 814 ifneq ($(KBUILD_SRC),)
815 @echo ' Using $(srctree) as source for kernel' 815 @echo ' Using $(srctree) as source for kernel'
816 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 816 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
817 echo " $(srctree) is not clean, please run 'make mrproper'";\ 817 echo " $(srctree) is not clean, please run 'make mrproper'";\
818 echo " in the '$(srctree)' directory.";\ 818 echo " in the '$(srctree)' directory.";\
819 /bin/false; \ 819 /bin/false; \
820 fi; 820 fi;
821 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; 821 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
822 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm 822 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
823 endif 823 endif
824 824
825 # prepare2 creates a makefile if using a separate output directory 825 # prepare2 creates a makefile if using a separate output directory
826 prepare2: prepare3 outputmakefile 826 prepare2: prepare3 outputmakefile
827 827
828 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ 828 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
829 include/asm include/config/auto.conf 829 include/asm include/config/auto.conf
830 ifneq ($(KBUILD_MODULES),) 830 ifneq ($(KBUILD_MODULES),)
831 $(Q)mkdir -p $(MODVERDIR) 831 $(Q)mkdir -p $(MODVERDIR)
832 $(Q)rm -f $(MODVERDIR)/* 832 $(Q)rm -f $(MODVERDIR)/*
833 endif 833 endif
834 834
835 archprepare: prepare1 scripts_basic 835 archprepare: prepare1 scripts_basic
836 836
837 prepare0: archprepare FORCE 837 prepare0: archprepare FORCE
838 $(Q)$(MAKE) $(build)=. 838 $(Q)$(MAKE) $(build)=.
839 839
840 # All the preparing.. 840 # All the preparing..
841 prepare prepare-all: prepare0 841 prepare prepare-all: prepare0
842 842
843 # Leave this as default for preprocessing vmlinux.lds.S, which is now 843 # Leave this as default for preprocessing vmlinux.lds.S, which is now
844 # done in arch/$(ARCH)/kernel/Makefile 844 # done in arch/$(ARCH)/kernel/Makefile
845 845
846 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) 846 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
847 847
848 # FIXME: The asm symlink changes when $(ARCH) changes. That's 848 # FIXME: The asm symlink changes when $(ARCH) changes. That's
849 # hard to detect, but I suppose "make mrproper" is a good idea 849 # hard to detect, but I suppose "make mrproper" is a good idea
850 # before switching between archs anyway. 850 # before switching between archs anyway.
851 851
852 include/asm: 852 include/asm:
853 @echo ' SYMLINK $@ -> include/asm-$(ARCH)' 853 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
854 $(Q)if [ ! -d include ]; then mkdir -p include; fi; 854 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
855 @ln -fsn asm-$(ARCH) $@ 855 @ln -fsn asm-$(ARCH) $@
856 856
857 # Generate some files 857 # Generate some files
858 # --------------------------------------------------------------------------- 858 # ---------------------------------------------------------------------------
859 859
860 # KERNELRELEASE can change from a few different places, meaning version.h 860 # KERNELRELEASE can change from a few different places, meaning version.h
861 # needs to be updated, so this check is forced on all builds 861 # needs to be updated, so this check is forced on all builds
862 862
863 uts_len := 64 863 uts_len := 64
864 define filechk_utsrelease.h 864 define filechk_utsrelease.h
865 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 865 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
866 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 866 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
867 exit 1; \ 867 exit 1; \
868 fi; \ 868 fi; \
869 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 869 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
870 endef 870 endef
871 871
872 define filechk_version.h 872 define filechk_version.h
873 (echo \#define LINUX_VERSION_CODE $(shell \ 873 (echo \#define LINUX_VERSION_CODE $(shell \
874 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 874 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
875 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 875 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
876 endef 876 endef
877 877
878 include/linux/version.h: $(srctree)/Makefile FORCE 878 include/linux/version.h: $(srctree)/Makefile FORCE
879 $(call filechk,version.h) 879 $(call filechk,version.h)
880 880
881 include/linux/utsrelease.h: include/config/kernel.release FORCE 881 include/linux/utsrelease.h: include/config/kernel.release FORCE
882 $(call filechk,utsrelease.h) 882 $(call filechk,utsrelease.h)
883 883
884 # --------------------------------------------------------------------------- 884 # ---------------------------------------------------------------------------
885 885
886 PHONY += depend dep 886 PHONY += depend dep
887 depend dep: 887 depend dep:
888 @echo '*** Warning: make $@ is unnecessary now.' 888 @echo '*** Warning: make $@ is unnecessary now.'
889 889
890 # --------------------------------------------------------------------------- 890 # ---------------------------------------------------------------------------
891 # Kernel headers 891 # Kernel headers
892 INSTALL_HDR_PATH=$(objtree)/usr 892 INSTALL_HDR_PATH=$(objtree)/usr
893 export INSTALL_HDR_PATH 893 export INSTALL_HDR_PATH
894 894
895 PHONY += headers_install 895 PHONY += headers_install
896 headers_install: include/linux/version.h 896 headers_install: include/linux/version.h scripts_basic FORCE
897 $(Q)unifdef -Ux /dev/null 897 $(Q)$(MAKE) $(build)=scripts scripts/unifdef
898 $(Q)rm -rf $(INSTALL_HDR_PATH)/include 898 $(Q)rm -rf $(INSTALL_HDR_PATH)/include
899 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include 899 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include
900 900
901 PHONY += headers_check 901 PHONY += headers_check
902 headers_check: headers_install 902 headers_check: headers_install
903 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1 903 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
904 904
905 # --------------------------------------------------------------------------- 905 # ---------------------------------------------------------------------------
906 # Modules 906 # Modules
907 907
908 ifdef CONFIG_MODULES 908 ifdef CONFIG_MODULES
909 909
910 # By default, build modules as well 910 # By default, build modules as well
911 911
912 all: modules 912 all: modules
913 913
914 # Build modules 914 # Build modules
915 915
916 PHONY += modules 916 PHONY += modules
917 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) 917 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
918 @echo ' Building modules, stage 2.'; 918 @echo ' Building modules, stage 2.';
919 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 919 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
920 920
921 921
922 # Target to prepare building external modules 922 # Target to prepare building external modules
923 PHONY += modules_prepare 923 PHONY += modules_prepare
924 modules_prepare: prepare scripts 924 modules_prepare: prepare scripts
925 925
926 # Target to install modules 926 # Target to install modules
927 PHONY += modules_install 927 PHONY += modules_install
928 modules_install: _modinst_ _modinst_post 928 modules_install: _modinst_ _modinst_post
929 929
930 PHONY += _modinst_ 930 PHONY += _modinst_
931 _modinst_: 931 _modinst_:
932 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ 932 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
933 echo "Warning: you may need to install module-init-tools"; \ 933 echo "Warning: you may need to install module-init-tools"; \
934 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ 934 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
935 sleep 1; \ 935 sleep 1; \
936 fi 936 fi
937 @rm -rf $(MODLIB)/kernel 937 @rm -rf $(MODLIB)/kernel
938 @rm -f $(MODLIB)/source 938 @rm -f $(MODLIB)/source
939 @mkdir -p $(MODLIB)/kernel 939 @mkdir -p $(MODLIB)/kernel
940 @ln -s $(srctree) $(MODLIB)/source 940 @ln -s $(srctree) $(MODLIB)/source
941 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 941 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
942 rm -f $(MODLIB)/build ; \ 942 rm -f $(MODLIB)/build ; \
943 ln -s $(objtree) $(MODLIB)/build ; \ 943 ln -s $(objtree) $(MODLIB)/build ; \
944 fi 944 fi
945 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst 945 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
946 946
947 # If System.map exists, run depmod. This deliberately does not have a 947 # If System.map exists, run depmod. This deliberately does not have a
948 # dependency on System.map since that would run the dependency tree on 948 # dependency on System.map since that would run the dependency tree on
949 # vmlinux. This depmod is only for convenience to give the initial 949 # vmlinux. This depmod is only for convenience to give the initial
950 # boot a modules.dep even before / is mounted read-write. However the 950 # boot a modules.dep even before / is mounted read-write. However the
951 # boot script depmod is the master version. 951 # boot script depmod is the master version.
952 ifeq "$(strip $(INSTALL_MOD_PATH))" "" 952 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
953 depmod_opts := 953 depmod_opts :=
954 else 954 else
955 depmod_opts := -b $(INSTALL_MOD_PATH) -r 955 depmod_opts := -b $(INSTALL_MOD_PATH) -r
956 endif 956 endif
957 PHONY += _modinst_post 957 PHONY += _modinst_post
958 _modinst_post: _modinst_ 958 _modinst_post: _modinst_
959 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi 959 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
960 960
961 else # CONFIG_MODULES 961 else # CONFIG_MODULES
962 962
963 # Modules not configured 963 # Modules not configured
964 # --------------------------------------------------------------------------- 964 # ---------------------------------------------------------------------------
965 965
966 modules modules_install: FORCE 966 modules modules_install: FORCE
967 @echo 967 @echo
968 @echo "The present kernel configuration has modules disabled." 968 @echo "The present kernel configuration has modules disabled."
969 @echo "Type 'make config' and enable loadable module support." 969 @echo "Type 'make config' and enable loadable module support."
970 @echo "Then build a kernel with module support enabled." 970 @echo "Then build a kernel with module support enabled."
971 @echo 971 @echo
972 @exit 1 972 @exit 1
973 973
974 endif # CONFIG_MODULES 974 endif # CONFIG_MODULES
975 975
976 ### 976 ###
977 # Cleaning is done on three levels. 977 # Cleaning is done on three levels.
978 # make clean Delete most generated files 978 # make clean Delete most generated files
979 # Leave enough to build external modules 979 # Leave enough to build external modules
980 # make mrproper Delete the current configuration, and all generated files 980 # make mrproper Delete the current configuration, and all generated files
981 # make distclean Remove editor backup files, patch leftover files and the like 981 # make distclean Remove editor backup files, patch leftover files and the like
982 982
983 # Directories & files removed with 'make clean' 983 # Directories & files removed with 'make clean'
984 CLEAN_DIRS += $(MODVERDIR) 984 CLEAN_DIRS += $(MODVERDIR)
985 CLEAN_FILES += vmlinux System.map \ 985 CLEAN_FILES += vmlinux System.map \
986 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 986 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
987 987
988 # Directories & files removed with 'make mrproper' 988 # Directories & files removed with 'make mrproper'
989 MRPROPER_DIRS += include/config include2 usr/include 989 MRPROPER_DIRS += include/config include2 usr/include
990 MRPROPER_FILES += .config .config.old include/asm .version .old_version \ 990 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
991 include/linux/autoconf.h include/linux/version.h \ 991 include/linux/autoconf.h include/linux/version.h \
992 include/linux/utsrelease.h \ 992 include/linux/utsrelease.h \
993 Module.symvers tags TAGS cscope* 993 Module.symvers tags TAGS cscope*
994 994
995 # clean - Delete most, but leave enough to build external modules 995 # clean - Delete most, but leave enough to build external modules
996 # 996 #
997 clean: rm-dirs := $(CLEAN_DIRS) 997 clean: rm-dirs := $(CLEAN_DIRS)
998 clean: rm-files := $(CLEAN_FILES) 998 clean: rm-files := $(CLEAN_FILES)
999 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) 999 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
1000 1000
1001 PHONY += $(clean-dirs) clean archclean 1001 PHONY += $(clean-dirs) clean archclean
1002 $(clean-dirs): 1002 $(clean-dirs):
1003 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1003 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1004 1004
1005 clean: archclean $(clean-dirs) 1005 clean: archclean $(clean-dirs)
1006 $(call cmd,rmdirs) 1006 $(call cmd,rmdirs)
1007 $(call cmd,rmfiles) 1007 $(call cmd,rmfiles)
1008 @find . $(RCS_FIND_IGNORE) \ 1008 @find . $(RCS_FIND_IGNORE) \
1009 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1009 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1010 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1010 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1011 -o -name '*.symtypes' \) \ 1011 -o -name '*.symtypes' \) \
1012 -type f -print | xargs rm -f 1012 -type f -print | xargs rm -f
1013 1013
1014 # mrproper - Delete all generated files, including .config 1014 # mrproper - Delete all generated files, including .config
1015 # 1015 #
1016 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1016 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1017 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1017 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1018 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1018 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1019 1019
1020 PHONY += $(mrproper-dirs) mrproper archmrproper 1020 PHONY += $(mrproper-dirs) mrproper archmrproper
1021 $(mrproper-dirs): 1021 $(mrproper-dirs):
1022 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1022 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1023 1023
1024 mrproper: clean archmrproper $(mrproper-dirs) 1024 mrproper: clean archmrproper $(mrproper-dirs)
1025 $(call cmd,rmdirs) 1025 $(call cmd,rmdirs)
1026 $(call cmd,rmfiles) 1026 $(call cmd,rmfiles)
1027 1027
1028 # distclean 1028 # distclean
1029 # 1029 #
1030 PHONY += distclean 1030 PHONY += distclean
1031 1031
1032 distclean: mrproper 1032 distclean: mrproper
1033 @find $(srctree) $(RCS_FIND_IGNORE) \ 1033 @find $(srctree) $(RCS_FIND_IGNORE) \
1034 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1034 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1035 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1035 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1036 -o -name '.*.rej' -o -size 0 \ 1036 -o -name '.*.rej' -o -size 0 \
1037 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 1037 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1038 -type f -print | xargs rm -f 1038 -type f -print | xargs rm -f
1039 1039
1040 1040
1041 # Packaging of the kernel to various formats 1041 # Packaging of the kernel to various formats
1042 # --------------------------------------------------------------------------- 1042 # ---------------------------------------------------------------------------
1043 # rpm target kept for backward compatibility 1043 # rpm target kept for backward compatibility
1044 package-dir := $(srctree)/scripts/package 1044 package-dir := $(srctree)/scripts/package
1045 1045
1046 %pkg: include/config/kernel.release FORCE 1046 %pkg: include/config/kernel.release FORCE
1047 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1047 $(Q)$(MAKE) $(build)=$(package-dir) $@
1048 rpm: include/config/kernel.release FORCE 1048 rpm: include/config/kernel.release FORCE
1049 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1049 $(Q)$(MAKE) $(build)=$(package-dir) $@
1050 1050
1051 1051
1052 # Brief documentation of the typical targets used 1052 # Brief documentation of the typical targets used
1053 # --------------------------------------------------------------------------- 1053 # ---------------------------------------------------------------------------
1054 1054
1055 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) 1055 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1056 boards := $(notdir $(boards)) 1056 boards := $(notdir $(boards))
1057 1057
1058 help: 1058 help:
1059 @echo 'Cleaning targets:' 1059 @echo 'Cleaning targets:'
1060 @echo ' clean - remove most generated files but keep the config' 1060 @echo ' clean - remove most generated files but keep the config'
1061 @echo ' mrproper - remove all generated files + config + various backup files' 1061 @echo ' mrproper - remove all generated files + config + various backup files'
1062 @echo '' 1062 @echo ''
1063 @echo 'Configuration targets:' 1063 @echo 'Configuration targets:'
1064 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1064 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1065 @echo '' 1065 @echo ''
1066 @echo 'Other generic targets:' 1066 @echo 'Other generic targets:'
1067 @echo ' all - Build all targets marked with [*]' 1067 @echo ' all - Build all targets marked with [*]'
1068 @echo '* vmlinux - Build the bare kernel' 1068 @echo '* vmlinux - Build the bare kernel'
1069 @echo '* modules - Build all modules' 1069 @echo '* modules - Build all modules'
1070 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1070 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1071 @echo ' dir/ - Build all files in dir and below' 1071 @echo ' dir/ - Build all files in dir and below'
1072 @echo ' dir/file.[ois] - Build specified target only' 1072 @echo ' dir/file.[ois] - Build specified target only'
1073 @echo ' dir/file.ko - Build module including final link' 1073 @echo ' dir/file.ko - Build module including final link'
1074 @echo ' rpm - Build a kernel as an RPM package' 1074 @echo ' rpm - Build a kernel as an RPM package'
1075 @echo ' tags/TAGS - Generate tags file for editors' 1075 @echo ' tags/TAGS - Generate tags file for editors'
1076 @echo ' cscope - Generate cscope index' 1076 @echo ' cscope - Generate cscope index'
1077 @echo ' kernelrelease - Output the release version string' 1077 @echo ' kernelrelease - Output the release version string'
1078 @echo ' kernelversion - Output the version stored in Makefile' 1078 @echo ' kernelversion - Output the version stored in Makefile'
1079 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH' 1079 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'
1080 @echo ' (default: $(INSTALL_HDR_PATH))' 1080 @echo ' (default: $(INSTALL_HDR_PATH))'
1081 @echo '' 1081 @echo ''
1082 @echo 'Static analysers' 1082 @echo 'Static analysers'
1083 @echo ' checkstack - Generate a list of stack hogs' 1083 @echo ' checkstack - Generate a list of stack hogs'
1084 @echo ' namespacecheck - Name space analysis on compiled kernel' 1084 @echo ' namespacecheck - Name space analysis on compiled kernel'
1085 @echo ' headers_check - Sanity check on exported headers' 1085 @echo ' headers_check - Sanity check on exported headers'
1086 @echo '' 1086 @echo ''
1087 @echo 'Kernel packaging:' 1087 @echo 'Kernel packaging:'
1088 @$(MAKE) $(build)=$(package-dir) help 1088 @$(MAKE) $(build)=$(package-dir) help
1089 @echo '' 1089 @echo ''
1090 @echo 'Documentation targets:' 1090 @echo 'Documentation targets:'
1091 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1091 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1092 @echo '' 1092 @echo ''
1093 @echo 'Architecture specific targets ($(ARCH)):' 1093 @echo 'Architecture specific targets ($(ARCH)):'
1094 @$(if $(archhelp),$(archhelp),\ 1094 @$(if $(archhelp),$(archhelp),\
1095 echo ' No architecture specific help defined for $(ARCH)') 1095 echo ' No architecture specific help defined for $(ARCH)')
1096 @echo '' 1096 @echo ''
1097 @$(if $(boards), \ 1097 @$(if $(boards), \
1098 $(foreach b, $(boards), \ 1098 $(foreach b, $(boards), \
1099 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1099 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1100 echo '') 1100 echo '')
1101 1101
1102 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1102 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1103 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1103 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1104 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1104 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1105 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1105 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1106 @echo '' 1106 @echo ''
1107 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1107 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1108 @echo 'For further info see the ./README file' 1108 @echo 'For further info see the ./README file'
1109 1109
1110 1110
1111 # Documentation targets 1111 # Documentation targets
1112 # --------------------------------------------------------------------------- 1112 # ---------------------------------------------------------------------------
1113 %docs: scripts_basic FORCE 1113 %docs: scripts_basic FORCE
1114 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1114 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1115 1115
1116 else # KBUILD_EXTMOD 1116 else # KBUILD_EXTMOD
1117 1117
1118 ### 1118 ###
1119 # External module support. 1119 # External module support.
1120 # When building external modules the kernel used as basis is considered 1120 # When building external modules the kernel used as basis is considered
1121 # read-only, and no consistency checks are made and the make 1121 # read-only, and no consistency checks are made and the make
1122 # system is not used on the basis kernel. If updates are required 1122 # system is not used on the basis kernel. If updates are required
1123 # in the basis kernel ordinary make commands (without M=...) must 1123 # in the basis kernel ordinary make commands (without M=...) must
1124 # be used. 1124 # be used.
1125 # 1125 #
1126 # The following are the only valid targets when building external 1126 # The following are the only valid targets when building external
1127 # modules. 1127 # modules.
1128 # make M=dir clean Delete all automatically generated files 1128 # make M=dir clean Delete all automatically generated files
1129 # make M=dir modules Make all modules in specified dir 1129 # make M=dir modules Make all modules in specified dir
1130 # make M=dir Same as 'make M=dir modules' 1130 # make M=dir Same as 'make M=dir modules'
1131 # make M=dir modules_install 1131 # make M=dir modules_install
1132 # Install the modules built in the module directory 1132 # Install the modules built in the module directory
1133 # Assumes install directory is already created 1133 # Assumes install directory is already created
1134 1134
1135 # We are always building modules 1135 # We are always building modules
1136 KBUILD_MODULES := 1 1136 KBUILD_MODULES := 1
1137 PHONY += crmodverdir 1137 PHONY += crmodverdir
1138 crmodverdir: 1138 crmodverdir:
1139 $(Q)mkdir -p $(MODVERDIR) 1139 $(Q)mkdir -p $(MODVERDIR)
1140 $(Q)rm -f $(MODVERDIR)/* 1140 $(Q)rm -f $(MODVERDIR)/*
1141 1141
1142 PHONY += $(objtree)/Module.symvers 1142 PHONY += $(objtree)/Module.symvers
1143 $(objtree)/Module.symvers: 1143 $(objtree)/Module.symvers:
1144 @test -e $(objtree)/Module.symvers || ( \ 1144 @test -e $(objtree)/Module.symvers || ( \
1145 echo; \ 1145 echo; \
1146 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1146 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1147 echo " is missing; modules will have no dependencies and modversions."; \ 1147 echo " is missing; modules will have no dependencies and modversions."; \
1148 echo ) 1148 echo )
1149 1149
1150 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1150 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1151 PHONY += $(module-dirs) modules 1151 PHONY += $(module-dirs) modules
1152 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1152 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1153 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1153 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1154 1154
1155 modules: $(module-dirs) 1155 modules: $(module-dirs)
1156 @echo ' Building modules, stage 2.'; 1156 @echo ' Building modules, stage 2.';
1157 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 1157 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1158 1158
1159 PHONY += modules_install 1159 PHONY += modules_install
1160 modules_install: _emodinst_ _emodinst_post 1160 modules_install: _emodinst_ _emodinst_post
1161 1161
1162 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1162 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1163 PHONY += _emodinst_ 1163 PHONY += _emodinst_
1164 _emodinst_: 1164 _emodinst_:
1165 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1165 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1166 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst 1166 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
1167 1167
1168 # Run depmod only is we have System.map and depmod is executable 1168 # Run depmod only is we have System.map and depmod is executable
1169 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1169 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1170 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \ 1170 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
1171 $(DEPMOD) -ae -F System.map \ 1171 $(DEPMOD) -ae -F System.map \
1172 $(if $(strip $(INSTALL_MOD_PATH)), \ 1172 $(if $(strip $(INSTALL_MOD_PATH)), \
1173 -b $(INSTALL_MOD_PATH) -r) \ 1173 -b $(INSTALL_MOD_PATH) -r) \
1174 $(KERNELRELEASE); \ 1174 $(KERNELRELEASE); \
1175 fi 1175 fi
1176 1176
1177 PHONY += _emodinst_post 1177 PHONY += _emodinst_post
1178 _emodinst_post: _emodinst_ 1178 _emodinst_post: _emodinst_
1179 $(call cmd,depmod) 1179 $(call cmd,depmod)
1180 1180
1181 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1181 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1182 1182
1183 PHONY += $(clean-dirs) clean 1183 PHONY += $(clean-dirs) clean
1184 $(clean-dirs): 1184 $(clean-dirs):
1185 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1185 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1186 1186
1187 clean: rm-dirs := $(MODVERDIR) 1187 clean: rm-dirs := $(MODVERDIR)
1188 clean: $(clean-dirs) 1188 clean: $(clean-dirs)
1189 $(call cmd,rmdirs) 1189 $(call cmd,rmdirs)
1190 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ 1190 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1191 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1191 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1192 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ 1192 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1193 -type f -print | xargs rm -f 1193 -type f -print | xargs rm -f
1194 1194
1195 help: 1195 help:
1196 @echo ' Building external modules.' 1196 @echo ' Building external modules.'
1197 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1197 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1198 @echo '' 1198 @echo ''
1199 @echo ' modules - default target, build the module(s)' 1199 @echo ' modules - default target, build the module(s)'
1200 @echo ' modules_install - install the module' 1200 @echo ' modules_install - install the module'
1201 @echo ' clean - remove generated files in module directory only' 1201 @echo ' clean - remove generated files in module directory only'
1202 @echo '' 1202 @echo ''
1203 1203
1204 # Dummies... 1204 # Dummies...
1205 PHONY += prepare scripts 1205 PHONY += prepare scripts
1206 prepare: ; 1206 prepare: ;
1207 scripts: ; 1207 scripts: ;
1208 endif # KBUILD_EXTMOD 1208 endif # KBUILD_EXTMOD
1209 1209
1210 # Generate tags for editors 1210 # Generate tags for editors
1211 # --------------------------------------------------------------------------- 1211 # ---------------------------------------------------------------------------
1212 1212
1213 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set 1213 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1214 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. 1214 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1215 #Adding $(srctree) adds about 20M on i386 to the size of the output file! 1215 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1216 1216
1217 ifeq ($(src),$(obj)) 1217 ifeq ($(src),$(obj))
1218 __srctree = 1218 __srctree =
1219 else 1219 else
1220 __srctree = $(srctree)/ 1220 __srctree = $(srctree)/
1221 endif 1221 endif
1222 1222
1223 ifeq ($(ALLSOURCE_ARCHS),) 1223 ifeq ($(ALLSOURCE_ARCHS),)
1224 ifeq ($(ARCH),um) 1224 ifeq ($(ARCH),um)
1225 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) 1225 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1226 else 1226 else
1227 ALLINCLUDE_ARCHS := $(ARCH) 1227 ALLINCLUDE_ARCHS := $(ARCH)
1228 endif 1228 endif
1229 else 1229 else
1230 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour. 1230 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour.
1231 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) 1231 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1232 endif 1232 endif
1233 1233
1234 ALLSOURCE_ARCHS := $(ARCH) 1234 ALLSOURCE_ARCHS := $(ARCH)
1235 1235
1236 define find-sources 1236 define find-sources
1237 ( find $(__srctree) $(RCS_FIND_IGNORE) \ 1237 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1238 \( -name include -o -name arch \) -prune -o \ 1238 \( -name include -o -name arch \) -prune -o \
1239 -name $1 -print; \ 1239 -name $1 -print; \
1240 for ARCH in $(ALLSOURCE_ARCHS) ; do \ 1240 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1241 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ 1241 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1242 -name $1 -print; \ 1242 -name $1 -print; \
1243 done ; \ 1243 done ; \
1244 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ 1244 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1245 -name $1 -print; \ 1245 -name $1 -print; \
1246 find $(__srctree)include $(RCS_FIND_IGNORE) \ 1246 find $(__srctree)include $(RCS_FIND_IGNORE) \
1247 \( -name config -o -name 'asm-*' \) -prune \ 1247 \( -name config -o -name 'asm-*' \) -prune \
1248 -o -name $1 -print; \ 1248 -o -name $1 -print; \
1249 for ARCH in $(ALLINCLUDE_ARCHS) ; do \ 1249 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1250 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ 1250 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1251 -name $1 -print; \ 1251 -name $1 -print; \
1252 done ; \ 1252 done ; \
1253 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ 1253 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1254 -name $1 -print ) 1254 -name $1 -print )
1255 endef 1255 endef
1256 1256
1257 define all-sources 1257 define all-sources
1258 $(call find-sources,'*.[chS]') 1258 $(call find-sources,'*.[chS]')
1259 endef 1259 endef
1260 define all-kconfigs 1260 define all-kconfigs
1261 $(call find-sources,'Kconfig*') 1261 $(call find-sources,'Kconfig*')
1262 endef 1262 endef
1263 define all-defconfigs 1263 define all-defconfigs
1264 $(call find-sources,'defconfig') 1264 $(call find-sources,'defconfig')
1265 endef 1265 endef
1266 1266
1267 quiet_cmd_cscope-file = FILELST cscope.files 1267 quiet_cmd_cscope-file = FILELST cscope.files
1268 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files 1268 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1269 1269
1270 quiet_cmd_cscope = MAKE cscope.out 1270 quiet_cmd_cscope = MAKE cscope.out
1271 cmd_cscope = cscope -b 1271 cmd_cscope = cscope -b
1272 1272
1273 cscope: FORCE 1273 cscope: FORCE
1274 $(call cmd,cscope-file) 1274 $(call cmd,cscope-file)
1275 $(call cmd,cscope) 1275 $(call cmd,cscope)
1276 1276
1277 quiet_cmd_TAGS = MAKE $@ 1277 quiet_cmd_TAGS = MAKE $@
1278 define cmd_TAGS 1278 define cmd_TAGS
1279 rm -f $@; \ 1279 rm -f $@; \
1280 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \ 1280 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
1281 echo "-I __initdata,__exitdata,__acquires,__releases \ 1281 echo "-I __initdata,__exitdata,__acquires,__releases \
1282 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ 1282 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1283 --extra=+f --c-kinds=+px"`; \ 1283 --extra=+f --c-kinds=+px"`; \
1284 $(all-sources) | xargs etags $$ETAGSF -a; \ 1284 $(all-sources) | xargs etags $$ETAGSF -a; \
1285 if test "x$$ETAGSF" = x; then \ 1285 if test "x$$ETAGSF" = x; then \
1286 $(all-kconfigs) | xargs etags -a \ 1286 $(all-kconfigs) | xargs etags -a \
1287 --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \ 1287 --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
1288 $(all-defconfigs) | xargs etags -a \ 1288 $(all-defconfigs) | xargs etags -a \
1289 --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \ 1289 --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
1290 fi 1290 fi
1291 endef 1291 endef
1292 1292
1293 TAGS: FORCE 1293 TAGS: FORCE
1294 $(call cmd,TAGS) 1294 $(call cmd,TAGS)
1295 1295
1296 1296
1297 quiet_cmd_tags = MAKE $@ 1297 quiet_cmd_tags = MAKE $@
1298 define cmd_tags 1298 define cmd_tags
1299 rm -f $@; \ 1299 rm -f $@; \
1300 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \ 1300 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
1301 echo "-I __initdata,__exitdata,__acquires,__releases \ 1301 echo "-I __initdata,__exitdata,__acquires,__releases \
1302 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ 1302 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1303 --extra=+f --c-kinds=+px"`; \ 1303 --extra=+f --c-kinds=+px"`; \
1304 $(all-sources) | xargs ctags $$CTAGSF -a 1304 $(all-sources) | xargs ctags $$CTAGSF -a
1305 endef 1305 endef
1306 1306
1307 tags: FORCE 1307 tags: FORCE
1308 $(call cmd,tags) 1308 $(call cmd,tags)
1309 1309
1310 1310
1311 # Scripts to check various things for consistency 1311 # Scripts to check various things for consistency
1312 # --------------------------------------------------------------------------- 1312 # ---------------------------------------------------------------------------
1313 1313
1314 includecheck: 1314 includecheck:
1315 find * $(RCS_FIND_IGNORE) \ 1315 find * $(RCS_FIND_IGNORE) \
1316 -name '*.[hcS]' -type f -print | sort \ 1316 -name '*.[hcS]' -type f -print | sort \
1317 | xargs $(PERL) -w scripts/checkincludes.pl 1317 | xargs $(PERL) -w scripts/checkincludes.pl
1318 1318
1319 versioncheck: 1319 versioncheck:
1320 find * $(RCS_FIND_IGNORE) \ 1320 find * $(RCS_FIND_IGNORE) \
1321 -name '*.[hcS]' -type f -print | sort \ 1321 -name '*.[hcS]' -type f -print | sort \
1322 | xargs $(PERL) -w scripts/checkversion.pl 1322 | xargs $(PERL) -w scripts/checkversion.pl
1323 1323
1324 namespacecheck: 1324 namespacecheck:
1325 $(PERL) $(srctree)/scripts/namespace.pl 1325 $(PERL) $(srctree)/scripts/namespace.pl
1326 1326
1327 endif #ifeq ($(config-targets),1) 1327 endif #ifeq ($(config-targets),1)
1328 endif #ifeq ($(mixed-targets),1) 1328 endif #ifeq ($(mixed-targets),1)
1329 1329
1330 PHONY += checkstack kernelrelease kernelversion 1330 PHONY += checkstack kernelrelease kernelversion
1331 checkstack: 1331 checkstack:
1332 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1332 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1333 $(PERL) $(src)/scripts/checkstack.pl $(ARCH) 1333 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1334 1334
1335 kernelrelease: 1335 kernelrelease:
1336 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ 1336 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
1337 $(error kernelrelease not valid - run 'make prepare' to update it)) 1337 $(error kernelrelease not valid - run 'make prepare' to update it))
1338 kernelversion: 1338 kernelversion:
1339 @echo $(KERNELVERSION) 1339 @echo $(KERNELVERSION)
1340 1340
1341 # Single targets 1341 # Single targets
1342 # --------------------------------------------------------------------------- 1342 # ---------------------------------------------------------------------------
1343 # Single targets are compatible with: 1343 # Single targets are compatible with:
1344 # - build whith mixed source and output 1344 # - build whith mixed source and output
1345 # - build with separate output dir 'make O=...' 1345 # - build with separate output dir 'make O=...'
1346 # - external modules 1346 # - external modules
1347 # 1347 #
1348 # target-dir => where to store outputfile 1348 # target-dir => where to store outputfile
1349 # build-dir => directory in kernel source tree to use 1349 # build-dir => directory in kernel source tree to use
1350 1350
1351 ifeq ($(KBUILD_EXTMOD),) 1351 ifeq ($(KBUILD_EXTMOD),)
1352 build-dir = $(patsubst %/,%,$(dir $@)) 1352 build-dir = $(patsubst %/,%,$(dir $@))
1353 target-dir = $(dir $@) 1353 target-dir = $(dir $@)
1354 else 1354 else
1355 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1355 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1356 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1356 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1357 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1357 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1358 endif 1358 endif
1359 1359
1360 %.s: %.c prepare scripts FORCE 1360 %.s: %.c prepare scripts FORCE
1361 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1361 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1362 %.i: %.c prepare scripts FORCE 1362 %.i: %.c prepare scripts FORCE
1363 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1363 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1364 %.o: %.c prepare scripts FORCE 1364 %.o: %.c prepare scripts FORCE
1365 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1365 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1366 %.lst: %.c prepare scripts FORCE 1366 %.lst: %.c prepare scripts FORCE
1367 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1367 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1368 %.s: %.S prepare scripts FORCE 1368 %.s: %.S prepare scripts FORCE
1369 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1369 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1370 %.o: %.S prepare scripts FORCE 1370 %.o: %.S prepare scripts FORCE
1371 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1371 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1372 %.symtypes: %.c prepare scripts FORCE 1372 %.symtypes: %.c prepare scripts FORCE
1373 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1373 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1374 1374
1375 # Modules 1375 # Modules
1376 / %/: prepare scripts FORCE 1376 / %/: prepare scripts FORCE
1377 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1377 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1378 $(build)=$(build-dir) 1378 $(build)=$(build-dir)
1379 %.ko: prepare scripts FORCE 1379 %.ko: prepare scripts FORCE
1380 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1380 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1381 $(build)=$(build-dir) $(@:.ko=.o) 1381 $(build)=$(build-dir) $(@:.ko=.o)
1382 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 1382 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1383 1383
1384 # FIXME Should go into a make.lib or something 1384 # FIXME Should go into a make.lib or something
1385 # =========================================================================== 1385 # ===========================================================================
1386 1386
1387 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1387 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1388 cmd_rmdirs = rm -rf $(rm-dirs) 1388 cmd_rmdirs = rm -rf $(rm-dirs)
1389 1389
1390 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1390 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1391 cmd_rmfiles = rm -f $(rm-files) 1391 cmd_rmfiles = rm -f $(rm-files)
1392 1392
1393 1393
1394 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ 1394 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1395 $(NOSTDINC_FLAGS) $(CPPFLAGS) \ 1395 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1396 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) 1396 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1397 1397
1398 quiet_cmd_as_o_S = AS $@ 1398 quiet_cmd_as_o_S = AS $@
1399 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 1399 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1400 1400
1401 # read all saved command lines 1401 # read all saved command lines
1402 1402
1403 targets := $(wildcard $(sort $(targets))) 1403 targets := $(wildcard $(sort $(targets)))
1404 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1404 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1405 1405
1406 ifneq ($(cmd_files),) 1406 ifneq ($(cmd_files),)
1407 $(cmd_files): ; # Do not try to update included dependency files 1407 $(cmd_files): ; # Do not try to update included dependency files
1408 include $(cmd_files) 1408 include $(cmd_files)
1409 endif 1409 endif
1410 1410
1411 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1411 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1412 # Usage: 1412 # Usage:
1413 # $(Q)$(MAKE) $(clean)=dir 1413 # $(Q)$(MAKE) $(clean)=dir
1414 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 1414 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1415 1415
1416 endif # skip-makefile 1416 endif # skip-makefile
1417 1417
1418 PHONY += FORCE 1418 PHONY += FORCE
1419 FORCE: 1419 FORCE:
1420 1420
1421 1421
1422 # Declare the contents of the .PHONY variable as phony. We keep that 1422 # Declare the contents of the .PHONY variable as phony. We keep that
1423 # information in a variable se we can use it in if_changed and friends. 1423 # information in a variable se we can use it in if_changed and friends.
1424 .PHONY: $(PHONY) 1424 .PHONY: $(PHONY)
1425 1425
1 ### 1 ###
2 # scripts contains sources for various helper programs used throughout 2 # scripts contains sources for various helper programs used throughout
3 # the kernel for the build process. 3 # the kernel for the build process.
4 # --------------------------------------------------------------------------- 4 # ---------------------------------------------------------------------------
5 # kallsyms: Find all symbols in vmlinux 5 # kallsyms: Find all symbols in vmlinux
6 # pnmttologo: Convert pnm files to logo files 6 # pnmttologo: Convert pnm files to logo files
7 # conmakehash: Create chartable 7 # conmakehash: Create chartable
8 # conmakehash: Create arrays for initializing the kernel console tables 8 # conmakehash: Create arrays for initializing the kernel console tables
9 9
10 hostprogs-$(CONFIG_KALLSYMS) += kallsyms 10 hostprogs-$(CONFIG_KALLSYMS) += kallsyms
11 hostprogs-$(CONFIG_LOGO) += pnmtologo 11 hostprogs-$(CONFIG_LOGO) += pnmtologo
12 hostprogs-$(CONFIG_VT) += conmakehash 12 hostprogs-$(CONFIG_VT) += conmakehash
13 hostprogs-$(CONFIG_PROM_CONSOLE) += conmakehash 13 hostprogs-$(CONFIG_PROM_CONSOLE) += conmakehash
14 hostprogs-$(CONFIG_IKCONFIG) += bin2c 14 hostprogs-$(CONFIG_IKCONFIG) += bin2c
15 15
16 always := $(hostprogs-y) 16 always := $(hostprogs-y)
17 17
18 # The following hostprogs-y programs are only build on demand
19 hostprogs-y += unifdef
20
18 subdir-$(CONFIG_MODVERSIONS) += genksyms 21 subdir-$(CONFIG_MODVERSIONS) += genksyms
19 subdir-$(CONFIG_MODULES) += mod 22 subdir-$(CONFIG_MODULES) += mod
20 23
21 # Let clean descend into subdirs 24 # Let clean descend into subdirs
22 subdir- += basic kconfig package 25 subdir- += basic kconfig package
23 26
scripts/Makefile.headersinst
Diff comments   View file @ 07aea3a
1 # ========================================================================== 1 # ==========================================================================
2 # Installing headers 2 # Installing headers
3 # 3 #
4 # header-y files will be installed verbatim 4 # header-y files will be installed verbatim
5 # unifdef-y are the files where unifdef will be run before installing files 5 # unifdef-y are the files where unifdef will be run before installing files
6 # objhdr-y are generated files that will be installed verbatim 6 # objhdr-y are generated files that will be installed verbatim
7 # 7 #
8 # ========================================================================== 8 # ==========================================================================
9 9
10 UNIFDEF := unifdef -U__KERNEL__ 10 UNIFDEF := scripts/unifdef -U__KERNEL__
11 11
12 # Eliminate the contents of (and inclusions of) compiler.h 12 # Eliminate the contents of (and inclusions of) compiler.h
13 HDRSED := sed -e "s/ inline / __inline__ /g" \ 13 HDRSED := sed -e "s/ inline / __inline__ /g" \
14 -e "s/[[:space:]]__user[[:space:]]\+/ /g" \ 14 -e "s/[[:space:]]__user[[:space:]]\+/ /g" \
15 -e "s/(__user[[:space:]]\+/ (/g" \ 15 -e "s/(__user[[:space:]]\+/ (/g" \
16 -e "s/[[:space:]]__force[[:space:]]\+/ /g" \ 16 -e "s/[[:space:]]__force[[:space:]]\+/ /g" \
17 -e "s/(__force[[:space:]]\+/ (/g" \ 17 -e "s/(__force[[:space:]]\+/ (/g" \
18 -e "s/[[:space:]]__iomem[[:space:]]\+/ /g" \ 18 -e "s/[[:space:]]__iomem[[:space:]]\+/ /g" \
19 -e "s/(__iomem[[:space:]]\+/ (/g" \ 19 -e "s/(__iomem[[:space:]]\+/ (/g" \
20 -e "s/[[:space:]]__attribute_const__[[:space:]]\+/\ /g" \ 20 -e "s/[[:space:]]__attribute_const__[[:space:]]\+/\ /g" \
21 -e "s/[[:space:]]__attribute_const__$$//" \ 21 -e "s/[[:space:]]__attribute_const__$$//" \
22 -e "/^\#include <linux\/compiler.h>/d" 22 -e "/^\#include <linux\/compiler.h>/d"
23 23
24 _dst := $(if $(dst),$(dst),$(obj)) 24 _dst := $(if $(dst),$(dst),$(obj))
25 25
26 .PHONY: __headersinst 26 .PHONY: __headersinst
27 __headersinst: 27 __headersinst:
28 28
29 29
30 ifeq (,$(patsubst include/asm/%,,$(obj)/)) 30 ifeq (,$(patsubst include/asm/%,,$(obj)/))
31 # For producing the generated stuff in include/asm for biarch builds, include 31 # For producing the generated stuff in include/asm for biarch builds, include
32 # both sets of Kbuild files; we'll generate anything which is mentioned in 32 # both sets of Kbuild files; we'll generate anything which is mentioned in
33 # _either_ arch, and recurse into subdirectories which are mentioned in either 33 # _either_ arch, and recurse into subdirectories which are mentioned in either
34 # arch. Since some directories may exist in one but not the other, we must 34 # arch. Since some directories may exist in one but not the other, we must
35 # use '-include'. 35 # use '-include'.
36 GENASM := 1 36 GENASM := 1
37 archasm := $(subst include/asm,asm-$(ARCH),$(obj)) 37 archasm := $(subst include/asm,asm-$(ARCH),$(obj))
38 altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj)) 38 altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
39 -include $(srctree)/include/$(archasm)/Kbuild 39 -include $(srctree)/include/$(archasm)/Kbuild
40 -include $(srctree)/include/$(altarchasm)/Kbuild 40 -include $(srctree)/include/$(altarchasm)/Kbuild
41 else 41 else
42 include $(srctree)/$(obj)/Kbuild 42 include $(srctree)/$(obj)/Kbuild
43 endif 43 endif
44 44
45 include scripts/Kbuild.include 45 include scripts/Kbuild.include
46 46
47 # If this is include/asm-$(ARCH) and there's no $(ALTARCH), then 47 # If this is include/asm-$(ARCH) and there's no $(ALTARCH), then
48 # override $(_dst) so that we install to include/asm directly. 48 # override $(_dst) so that we install to include/asm directly.
49 ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)) 49 ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH))
50 _dst := include/asm 50 _dst := include/asm
51 endif 51 endif
52 52
53 header-y := $(sort $(header-y)) 53 header-y := $(sort $(header-y))
54 unifdef-y := $(sort $(unifdef-y)) 54 unifdef-y := $(sort $(unifdef-y))
55 subdir-y := $(patsubst %/,%,$(filter %/, $(header-y))) 55 subdir-y := $(patsubst %/,%,$(filter %/, $(header-y)))
56 header-y := $(filter-out %/, $(header-y)) 56 header-y := $(filter-out %/, $(header-y))
57 header-y := $(filter-out $(unifdef-y),$(header-y)) 57 header-y := $(filter-out $(unifdef-y),$(header-y))
58 58
59 ifdef ALTARCH 59 ifdef ALTARCH
60 ifeq ($(obj),include/asm-$(ARCH)) 60 ifeq ($(obj),include/asm-$(ARCH))
61 altarch-y := altarch-dir 61 altarch-y := altarch-dir
62 endif 62 endif
63 endif 63 endif
64 64
65 # Make the definitions visible for recursive make invocations 65 # Make the definitions visible for recursive make invocations
66 export ALTARCH 66 export ALTARCH
67 export ARCHDEF 67 export ARCHDEF
68 export ALTARCHDEF 68 export ALTARCHDEF
69 69
70 quiet_cmd_o_hdr_install = INSTALL $(_dst)/$@ 70 quiet_cmd_o_hdr_install = INSTALL $(_dst)/$@
71 cmd_o_hdr_install = cp $(objtree)/$(obj)/$@ $(INSTALL_HDR_PATH)/$(_dst) 71 cmd_o_hdr_install = cp $(objtree)/$(obj)/$@ $(INSTALL_HDR_PATH)/$(_dst)
72 72
73 quiet_cmd_headers_install = INSTALL $(_dst)/$@ 73 quiet_cmd_headers_install = INSTALL $(_dst)/$@
74 cmd_headers_install = $(HDRSED) $(srctree)/$(obj)/$@ \ 74 cmd_headers_install = $(HDRSED) $(srctree)/$(obj)/$@ \
75 > $(INSTALL_HDR_PATH)/$(_dst)/$@ 75 > $(INSTALL_HDR_PATH)/$(_dst)/$@
76 76
77 quiet_cmd_unifdef = UNIFDEF $(_dst)/$@ 77 quiet_cmd_unifdef = UNIFDEF $(_dst)/$@
78 cmd_unifdef = $(UNIFDEF) $(srctree)/$(obj)/$@ | $(HDRSED) \ 78 cmd_unifdef = $(UNIFDEF) $(srctree)/$(obj)/$@ | $(HDRSED) \
79 > $(INSTALL_HDR_PATH)/$(_dst)/$@ || : 79 > $(INSTALL_HDR_PATH)/$(_dst)/$@ || :
80 80
81 quiet_cmd_check = CHECK $(_dst)/$@ 81 quiet_cmd_check = CHECK $(_dst)/$@
82 cmd_check = $(srctree)/scripts/hdrcheck.sh \ 82 cmd_check = $(srctree)/scripts/hdrcheck.sh \
83 $(INSTALL_HDR_PATH)/include \ 83 $(INSTALL_HDR_PATH)/include \
84 $(INSTALL_HDR_PATH)/$(_dst)/$@ 84 $(INSTALL_HDR_PATH)/$(_dst)/$@
85 85
86 quiet_cmd_mkdir = MKDIR $@ 86 quiet_cmd_mkdir = MKDIR $@
87 cmd_mkdir = mkdir -p $(INSTALL_HDR_PATH)/$@ 87 cmd_mkdir = mkdir -p $(INSTALL_HDR_PATH)/$@
88 88
89 quiet_cmd_gen = GEN $(_dst)/$@ 89 quiet_cmd_gen = GEN $(_dst)/$@
90 cmd_gen = \ 90 cmd_gen = \
91 STUBDEF=__ASM_STUB_`echo $@ | tr a-z. A-Z_`; \ 91 STUBDEF=__ASM_STUB_`echo $@ | tr a-z. A-Z_`; \
92 (echo "/* File autogenerated by 'make headers_install' */" ; \ 92 (echo "/* File autogenerated by 'make headers_install' */" ; \
93 echo "\#ifndef $$STUBDEF" ; \ 93 echo "\#ifndef $$STUBDEF" ; \
94 echo "\#define $$STUBDEF" ; \ 94 echo "\#define $$STUBDEF" ; \
95 echo "\# if $(ARCHDEF)" ; \ 95 echo "\# if $(ARCHDEF)" ; \
96 if [ -r $(INSTALL_HDR_PATH)/include/$(archasm)/$@ ]; then \ 96 if [ -r $(INSTALL_HDR_PATH)/include/$(archasm)/$@ ]; then \
97 echo "\# include <$(archasm)/$@>" ; \ 97 echo "\# include <$(archasm)/$@>" ; \
98 else \ 98 else \
99 echo "\# error $(archasm)/$@ does not exist in" \ 99 echo "\# error $(archasm)/$@ does not exist in" \
100 "the $(ARCH) architecture" ; \ 100 "the $(ARCH) architecture" ; \
101 fi ; \ 101 fi ; \
102 echo "\# elif $(ALTARCHDEF)" ; \ 102 echo "\# elif $(ALTARCHDEF)" ; \
103 if [ -r $(INSTALL_HDR_PATH)/include/$(altarchasm)/$@ ]; then \ 103 if [ -r $(INSTALL_HDR_PATH)/include/$(altarchasm)/$@ ]; then \
104 echo "\# include <$(altarchasm)/$@>" ; \ 104 echo "\# include <$(altarchasm)/$@>" ; \
105 else \ 105 else \
106 echo "\# error $(altarchasm)/$@ does not exist in" \ 106 echo "\# error $(altarchasm)/$@ does not exist in" \
107 "the $(ALTARCH) architecture" ; \ 107 "the $(ALTARCH) architecture" ; \
108 fi ; \ 108 fi ; \
109 echo "\# else" ; \ 109 echo "\# else" ; \
110 echo "\# warning This machine appears to be" \ 110 echo "\# warning This machine appears to be" \
111 "neither $(ARCH) nor $(ALTARCH)." ; \ 111 "neither $(ARCH) nor $(ALTARCH)." ; \
112 echo "\# endif" ; \ 112 echo "\# endif" ; \
113 echo "\#endif /* $$STUBDEF */" ; \ 113 echo "\#endif /* $$STUBDEF */" ; \
114 ) > $(INSTALL_HDR_PATH)/$(_dst)/$@ 114 ) > $(INSTALL_HDR_PATH)/$(_dst)/$@
115 115
116 __headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y) 116 __headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y)
117 117
118 .PHONY: $(header-y) $(unifdef-y) $(subdir-y) 118 .PHONY: $(header-y) $(unifdef-y) $(subdir-y)
119 119
120 ifdef HDRCHECK 120 ifdef HDRCHECK
121 # Rules for checking headers 121 # Rules for checking headers
122 $(objhdr-y) $(header-y) $(unifdef-y): 122 $(objhdr-y) $(header-y) $(unifdef-y):
123 $(call cmd,check) 123 $(call cmd,check)
124 else 124 else
125 # Rules for installing headers 125 # Rules for installing headers
126 126
127 $(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): $(_dst) 127 $(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): $(_dst)
128 128
129 .PHONY: $(_dst) 129 .PHONY: $(_dst)
130 $(_dst): 130 $(_dst):
131 $(call cmd,mkdir) 131 $(call cmd,mkdir)
132 132
133 ifdef GENASM 133 ifdef GENASM
134 $(objhdr-y) $(header-y) $(unifdef-y): 134 $(objhdr-y) $(header-y) $(unifdef-y):
135 $(call cmd,gen) 135 $(call cmd,gen)
136 136
137 else 137 else
138 $(objhdr-y): 138 $(objhdr-y):
139 $(call cmd,o_hdr_install) 139 $(call cmd,o_hdr_install)
140 140
141 $(header-y): 141 $(header-y):
142 $(call cmd,headers_install) 142 $(call cmd,headers_install)
143 143
144 $(unifdef-y): 144 $(unifdef-y):
145 $(call cmd,unifdef) 145 $(call cmd,unifdef)
146 endif 146 endif
147 endif 147 endif
148 148
149 hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 149 hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
150 150
151 .PHONY: altarch-dir 151 .PHONY: altarch-dir
152 # All the files in the normal arch dir must be created first, since we test 152 # All the files in the normal arch dir must be created first, since we test
153 # for their existence. 153 # for their existence.
154 altarch-dir: $(subdir-y) $(header-y) $(unifdef-y) $(objhdr-y) 154 altarch-dir: $(subdir-y) $(header-y) $(unifdef-y) $(objhdr-y)
155 $(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH) 155 $(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
156 $(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm 156 $(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm
157 157
158 # Recursion 158 # Recursion
159 $(subdir-y): 159 $(subdir-y):
160 $(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel) 160 $(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)
161 161