Eric Lee / smarc-ti-linux-kernel

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Commit 929799973ba4a40f7b8001e9cc461c13d04c4124

Authored by Andi Kleen
Committed by Sam Ravnborg
1 parent 11df65c3c6
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: create the source symlink earlier in the objdir 

It's useful to already have the source symlink in a
objdir when one just runs make *config. Then one
can do

mkdir obj-allyes
cd obj-allyes
make -C ../sourcedir O=$(pwd) allyesconfig
./source/scripts/config --disable debug_info
make CC=icecc -j18

without having to interrupt the make first just to
get the source symlink.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
[sam: deleted the other source symlink statement]
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

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

1 VERSION = 2 1 VERSION = 2
2 PATCHLEVEL = 6 2 PATCHLEVEL = 6
3 SUBLEVEL = 29 3 SUBLEVEL = 29
4 EXTRAVERSION = -rc5 4 EXTRAVERSION = -rc5
5 NAME = Erotic Pickled Herring 5 NAME = Erotic Pickled Herring
6 6
7 # *DOCUMENTATION* 7 # *DOCUMENTATION*
8 # To see a list of typical targets execute "make help" 8 # To see a list of typical targets execute "make help"
9 # More info can be located in ./README 9 # More info can be located in ./README
10 # Comments in this file are targeted only to the developer, do not 10 # Comments in this file are targeted only to the developer, do not
11 # expect to learn how to build the kernel reading this file. 11 # expect to learn how to build the kernel reading this file.
12 12
13 # Do not: 13 # Do not:
14 # o use make's built-in rules and variables 14 # o use make's built-in rules and variables
15 # (this increases performance and avoids hard-to-debug behaviour); 15 # (this increases performance and avoids hard-to-debug behaviour);
16 # o print "Entering directory ..."; 16 # o print "Entering directory ...";
17 MAKEFLAGS += -rR --no-print-directory 17 MAKEFLAGS += -rR --no-print-directory
18 18
19 # We are using a recursive build, so we need to do a little thinking 19 # We are using a recursive build, so we need to do a little thinking
20 # to get the ordering right. 20 # to get the ordering right.
21 # 21 #
22 # Most importantly: sub-Makefiles should only ever modify files in 22 # Most importantly: sub-Makefiles should only ever modify files in
23 # their own directory. If in some directory we have a dependency on 23 # their own directory. If in some directory we have a dependency on
24 # a file in another dir (which doesn't happen often, but it's often 24 # a file in another dir (which doesn't happen often, but it's often
25 # unavoidable when linking the built-in.o targets which finally 25 # unavoidable when linking the built-in.o targets which finally
26 # turn into vmlinux), we will call a sub make in that other dir, and 26 # turn into vmlinux), we will call a sub make in that other dir, and
27 # after that we are sure that everything which is in that other dir 27 # after that we are sure that everything which is in that other dir
28 # is now up to date. 28 # is now up to date.
29 # 29 #
30 # The only cases where we need to modify files which have global 30 # The only cases where we need to modify files which have global
31 # effects are thus separated out and done before the recursive 31 # effects are thus separated out and done before the recursive
32 # descending is started. They are now explicitly listed as the 32 # descending is started. They are now explicitly listed as the
33 # prepare rule. 33 # prepare rule.
34 34
35 # To put more focus on warnings, be less verbose as default 35 # To put more focus on warnings, be less verbose as default
36 # Use 'make V=1' to see the full commands 36 # Use 'make V=1' to see the full commands
37 37
38 ifdef V 38 ifdef V
39 ifeq ("$(origin V)", "command line") 39 ifeq ("$(origin V)", "command line")
40 KBUILD_VERBOSE = $(V) 40 KBUILD_VERBOSE = $(V)
41 endif 41 endif
42 endif 42 endif
43 ifndef KBUILD_VERBOSE 43 ifndef KBUILD_VERBOSE
44 KBUILD_VERBOSE = 0 44 KBUILD_VERBOSE = 0
45 endif 45 endif
46 46
47 # Call a source code checker (by default, "sparse") as part of the 47 # Call a source code checker (by default, "sparse") as part of the
48 # C compilation. 48 # C compilation.
49 # 49 #
50 # Use 'make C=1' to enable checking of only re-compiled files. 50 # Use 'make C=1' to enable checking of only re-compiled files.
51 # Use 'make C=2' to enable checking of *all* source files, regardless 51 # Use 'make C=2' to enable checking of *all* source files, regardless
52 # of whether they are re-compiled or not. 52 # of whether they are re-compiled or not.
53 # 53 #
54 # See the file "Documentation/sparse.txt" for more details, including 54 # See the file "Documentation/sparse.txt" for more details, including
55 # where to get the "sparse" utility. 55 # where to get the "sparse" utility.
56 56
57 ifdef C 57 ifdef C
58 ifeq ("$(origin C)", "command line") 58 ifeq ("$(origin C)", "command line")
59 KBUILD_CHECKSRC = $(C) 59 KBUILD_CHECKSRC = $(C)
60 endif 60 endif
61 endif 61 endif
62 ifndef KBUILD_CHECKSRC 62 ifndef KBUILD_CHECKSRC
63 KBUILD_CHECKSRC = 0 63 KBUILD_CHECKSRC = 0
64 endif 64 endif
65 65
66 # Use make M=dir to specify directory of external module to build 66 # Use make M=dir to specify directory of external module to build
67 # Old syntax make ... SUBDIRS=$PWD is still supported 67 # Old syntax make ... SUBDIRS=$PWD is still supported
68 # Setting the environment variable KBUILD_EXTMOD take precedence 68 # Setting the environment variable KBUILD_EXTMOD take precedence
69 ifdef SUBDIRS 69 ifdef SUBDIRS
70 KBUILD_EXTMOD ?= $(SUBDIRS) 70 KBUILD_EXTMOD ?= $(SUBDIRS)
71 endif 71 endif
72 ifdef M 72 ifdef M
73 ifeq ("$(origin M)", "command line") 73 ifeq ("$(origin M)", "command line")
74 KBUILD_EXTMOD := $(M) 74 KBUILD_EXTMOD := $(M)
75 endif 75 endif
76 endif 76 endif
77 77
78 78
79 # kbuild supports saving output files in a separate directory. 79 # kbuild supports saving output files in a separate directory.
80 # To locate output files in a separate directory two syntaxes are supported. 80 # To locate output files in a separate directory two syntaxes are supported.
81 # In both cases the working directory must be the root of the kernel src. 81 # In both cases the working directory must be the root of the kernel src.
82 # 1) O= 82 # 1) O=
83 # Use "make O=dir/to/store/output/files/" 83 # Use "make O=dir/to/store/output/files/"
84 # 84 #
85 # 2) Set KBUILD_OUTPUT 85 # 2) Set KBUILD_OUTPUT
86 # Set the environment variable KBUILD_OUTPUT to point to the directory 86 # Set the environment variable KBUILD_OUTPUT to point to the directory
87 # where the output files shall be placed. 87 # where the output files shall be placed.
88 # export KBUILD_OUTPUT=dir/to/store/output/files/ 88 # export KBUILD_OUTPUT=dir/to/store/output/files/
89 # make 89 # make
90 # 90 #
91 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 91 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
92 # variable. 92 # variable.
93 93
94 94
95 # KBUILD_SRC is set on invocation of make in OBJ directory 95 # KBUILD_SRC is set on invocation of make in OBJ directory
96 # KBUILD_SRC is not intended to be used by the regular user (for now) 96 # KBUILD_SRC is not intended to be used by the regular user (for now)
97 ifeq ($(KBUILD_SRC),) 97 ifeq ($(KBUILD_SRC),)
98 98
99 # OK, Make called in directory where kernel src resides 99 # OK, Make called in directory where kernel src resides
100 # Do we want to locate output files in a separate directory? 100 # Do we want to locate output files in a separate directory?
101 ifdef O 101 ifdef O
102 ifeq ("$(origin O)", "command line") 102 ifeq ("$(origin O)", "command line")
103 KBUILD_OUTPUT := $(O) 103 KBUILD_OUTPUT := $(O)
104 endif 104 endif
105 endif 105 endif
106 106
107 # That's our default target when none is given on the command line 107 # That's our default target when none is given on the command line
108 PHONY := _all 108 PHONY := _all
109 _all: 109 _all:
110 110
111 # Cancel implicit rules on top Makefile 111 # Cancel implicit rules on top Makefile
112 $(CURDIR)/Makefile Makefile: ; 112 $(CURDIR)/Makefile Makefile: ;
113 113
114 ifneq ($(KBUILD_OUTPUT),) 114 ifneq ($(KBUILD_OUTPUT),)
115 # Invoke a second make in the output directory, passing relevant variables 115 # Invoke a second make in the output directory, passing relevant variables
116 # check that the output directory actually exists 116 # check that the output directory actually exists
117 saved-output := $(KBUILD_OUTPUT) 117 saved-output := $(KBUILD_OUTPUT)
118 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 118 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
119 $(if $(KBUILD_OUTPUT),, \ 119 $(if $(KBUILD_OUTPUT),, \
120 $(error output directory "$(saved-output)" does not exist)) 120 $(error output directory "$(saved-output)" does not exist))
121 121
122 PHONY += $(MAKECMDGOALS) sub-make 122 PHONY += $(MAKECMDGOALS) sub-make
123 123
124 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 124 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
125 $(Q)@: 125 $(Q)@:
126 126
127 sub-make: FORCE 127 sub-make: FORCE
128 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 128 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
129 KBUILD_SRC=$(CURDIR) \ 129 KBUILD_SRC=$(CURDIR) \
130 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ 130 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
131 $(filter-out _all sub-make,$(MAKECMDGOALS)) 131 $(filter-out _all sub-make,$(MAKECMDGOALS))
132 132
133 # Leave processing to above invocation of make 133 # Leave processing to above invocation of make
134 skip-makefile := 1 134 skip-makefile := 1
135 endif # ifneq ($(KBUILD_OUTPUT),) 135 endif # ifneq ($(KBUILD_OUTPUT),)
136 endif # ifeq ($(KBUILD_SRC),) 136 endif # ifeq ($(KBUILD_SRC),)
137 137
138 # We process the rest of the Makefile if this is the final invocation of make 138 # We process the rest of the Makefile if this is the final invocation of make
139 ifeq ($(skip-makefile),) 139 ifeq ($(skip-makefile),)
140 140
141 # If building an external module we do not care about the all: rule 141 # If building an external module we do not care about the all: rule
142 # but instead _all depend on modules 142 # but instead _all depend on modules
143 PHONY += all 143 PHONY += all
144 ifeq ($(KBUILD_EXTMOD),) 144 ifeq ($(KBUILD_EXTMOD),)
145 _all: all 145 _all: all
146 else 146 else
147 _all: modules 147 _all: modules
148 endif 148 endif
149 149
150 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 150 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
151 TOPDIR := $(srctree) 151 TOPDIR := $(srctree)
152 # FIXME - TOPDIR is obsolete, use srctree/objtree 152 # FIXME - TOPDIR is obsolete, use srctree/objtree
153 objtree := $(CURDIR) 153 objtree := $(CURDIR)
154 src := $(srctree) 154 src := $(srctree)
155 obj := $(objtree) 155 obj := $(objtree)
156 156
157 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 157 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
158 158
159 export srctree objtree VPATH TOPDIR 159 export srctree objtree VPATH TOPDIR
160 160
161 161
162 # SUBARCH tells the usermode build what the underlying arch is. That is set 162 # SUBARCH tells the usermode build what the underlying arch is. That is set
163 # first, and if a usermode build is happening, the "ARCH=um" on the command 163 # first, and if a usermode build is happening, the "ARCH=um" on the command
164 # line overrides the setting of ARCH below. If a native build is happening, 164 # line overrides the setting of ARCH below. If a native build is happening,
165 # then ARCH is assigned, getting whatever value it gets normally, and 165 # then ARCH is assigned, getting whatever value it gets normally, and
166 # SUBARCH is subsequently ignored. 166 # SUBARCH is subsequently ignored.
167 167
168 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 168 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
169 -e s/arm.*/arm/ -e s/sa110/arm/ \ 169 -e s/arm.*/arm/ -e s/sa110/arm/ \
170 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 170 -e s/s390x/s390/ -e s/parisc64/parisc/ \
171 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 171 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
172 -e s/sh.*/sh/ ) 172 -e s/sh.*/sh/ )
173 173
174 # Cross compiling and selecting different set of gcc/bin-utils 174 # Cross compiling and selecting different set of gcc/bin-utils
175 # --------------------------------------------------------------------------- 175 # ---------------------------------------------------------------------------
176 # 176 #
177 # When performing cross compilation for other architectures ARCH shall be set 177 # When performing cross compilation for other architectures ARCH shall be set
178 # to the target architecture. (See arch/* for the possibilities). 178 # to the target architecture. (See arch/* for the possibilities).
179 # ARCH can be set during invocation of make: 179 # ARCH can be set during invocation of make:
180 # make ARCH=ia64 180 # make ARCH=ia64
181 # Another way is to have ARCH set in the environment. 181 # Another way is to have ARCH set in the environment.
182 # The default ARCH is the host where make is executed. 182 # The default ARCH is the host where make is executed.
183 183
184 # CROSS_COMPILE specify the prefix used for all executables used 184 # CROSS_COMPILE specify the prefix used for all executables used
185 # during compilation. Only gcc and related bin-utils executables 185 # during compilation. Only gcc and related bin-utils executables
186 # are prefixed with $(CROSS_COMPILE). 186 # are prefixed with $(CROSS_COMPILE).
187 # CROSS_COMPILE can be set on the command line 187 # CROSS_COMPILE can be set on the command line
188 # make CROSS_COMPILE=ia64-linux- 188 # make CROSS_COMPILE=ia64-linux-
189 # Alternatively CROSS_COMPILE can be set in the environment. 189 # Alternatively CROSS_COMPILE can be set in the environment.
190 # Default value for CROSS_COMPILE is not to prefix executables 190 # Default value for CROSS_COMPILE is not to prefix executables
191 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 191 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
192 export KBUILD_BUILDHOST := $(SUBARCH) 192 export KBUILD_BUILDHOST := $(SUBARCH)
193 ARCH ?= $(SUBARCH) 193 ARCH ?= $(SUBARCH)
194 CROSS_COMPILE ?= 194 CROSS_COMPILE ?=
195 195
196 # Architecture as present in compile.h 196 # Architecture as present in compile.h
197 UTS_MACHINE := $(ARCH) 197 UTS_MACHINE := $(ARCH)
198 SRCARCH := $(ARCH) 198 SRCARCH := $(ARCH)
199 199
200 # Additional ARCH settings for x86 200 # Additional ARCH settings for x86
201 ifeq ($(ARCH),i386) 201 ifeq ($(ARCH),i386)
202 SRCARCH := x86 202 SRCARCH := x86
203 endif 203 endif
204 ifeq ($(ARCH),x86_64) 204 ifeq ($(ARCH),x86_64)
205 SRCARCH := x86 205 SRCARCH := x86
206 endif 206 endif
207 207
208 # Additional ARCH settings for sparc 208 # Additional ARCH settings for sparc
209 ifeq ($(ARCH),sparc64) 209 ifeq ($(ARCH),sparc64)
210 SRCARCH := sparc 210 SRCARCH := sparc
211 endif 211 endif
212 212
213 # Where to locate arch specific headers 213 # Where to locate arch specific headers
214 hdr-arch := $(SRCARCH) 214 hdr-arch := $(SRCARCH)
215 215
216 ifeq ($(ARCH),m68knommu) 216 ifeq ($(ARCH),m68knommu)
217 hdr-arch := m68k 217 hdr-arch := m68k
218 endif 218 endif
219 219
220 KCONFIG_CONFIG ?= .config 220 KCONFIG_CONFIG ?= .config
221 221
222 # SHELL used by kbuild 222 # SHELL used by kbuild
223 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 223 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
224 else if [ -x /bin/bash ]; then echo /bin/bash; \ 224 else if [ -x /bin/bash ]; then echo /bin/bash; \
225 else echo sh; fi ; fi) 225 else echo sh; fi ; fi)
226 226
227 HOSTCC = gcc 227 HOSTCC = gcc
228 HOSTCXX = g++ 228 HOSTCXX = g++
229 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 229 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
230 HOSTCXXFLAGS = -O2 230 HOSTCXXFLAGS = -O2
231 231
232 # Decide whether to build built-in, modular, or both. 232 # Decide whether to build built-in, modular, or both.
233 # Normally, just do built-in. 233 # Normally, just do built-in.
234 234
235 KBUILD_MODULES := 235 KBUILD_MODULES :=
236 KBUILD_BUILTIN := 1 236 KBUILD_BUILTIN := 1
237 237
238 # If we have only "make modules", don't compile built-in objects. 238 # If we have only "make modules", don't compile built-in objects.
239 # When we're building modules with modversions, we need to consider 239 # When we're building modules with modversions, we need to consider
240 # the built-in objects during the descend as well, in order to 240 # the built-in objects during the descend as well, in order to
241 # make sure the checksums are up to date before we record them. 241 # make sure the checksums are up to date before we record them.
242 242
243 ifeq ($(MAKECMDGOALS),modules) 243 ifeq ($(MAKECMDGOALS),modules)
244 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 244 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
245 endif 245 endif
246 246
247 # If we have "make <whatever> modules", compile modules 247 # If we have "make <whatever> modules", compile modules
248 # in addition to whatever we do anyway. 248 # in addition to whatever we do anyway.
249 # Just "make" or "make all" shall build modules as well 249 # Just "make" or "make all" shall build modules as well
250 250
251 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 251 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
252 KBUILD_MODULES := 1 252 KBUILD_MODULES := 1
253 endif 253 endif
254 254
255 ifeq ($(MAKECMDGOALS),) 255 ifeq ($(MAKECMDGOALS),)
256 KBUILD_MODULES := 1 256 KBUILD_MODULES := 1
257 endif 257 endif
258 258
259 export KBUILD_MODULES KBUILD_BUILTIN 259 export KBUILD_MODULES KBUILD_BUILTIN
260 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 260 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
261 261
262 # Beautify output 262 # Beautify output
263 # --------------------------------------------------------------------------- 263 # ---------------------------------------------------------------------------
264 # 264 #
265 # Normally, we echo the whole command before executing it. By making 265 # Normally, we echo the whole command before executing it. By making
266 # that echo $($(quiet)$(cmd)), we now have the possibility to set 266 # that echo $($(quiet)$(cmd)), we now have the possibility to set
267 # $(quiet) to choose other forms of output instead, e.g. 267 # $(quiet) to choose other forms of output instead, e.g.
268 # 268 #
269 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 269 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
270 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 270 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
271 # 271 #
272 # If $(quiet) is empty, the whole command will be printed. 272 # If $(quiet) is empty, the whole command will be printed.
273 # If it is set to "quiet_", only the short version will be printed. 273 # If it is set to "quiet_", only the short version will be printed.
274 # If it is set to "silent_", nothing will be printed at all, since 274 # If it is set to "silent_", nothing will be printed at all, since
275 # the variable $(silent_cmd_cc_o_c) doesn't exist. 275 # the variable $(silent_cmd_cc_o_c) doesn't exist.
276 # 276 #
277 # A simple variant is to prefix commands with $(Q) - that's useful 277 # A simple variant is to prefix commands with $(Q) - that's useful
278 # for commands that shall be hidden in non-verbose mode. 278 # for commands that shall be hidden in non-verbose mode.
279 # 279 #
280 # $(Q)ln $@ :< 280 # $(Q)ln $@ :<
281 # 281 #
282 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 282 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
283 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 283 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
284 284
285 ifeq ($(KBUILD_VERBOSE),1) 285 ifeq ($(KBUILD_VERBOSE),1)
286 quiet = 286 quiet =
287 Q = 287 Q =
288 else 288 else
289 quiet=quiet_ 289 quiet=quiet_
290 Q = @ 290 Q = @
291 endif 291 endif
292 292
293 # If the user is running make -s (silent mode), suppress echoing of 293 # If the user is running make -s (silent mode), suppress echoing of
294 # commands 294 # commands
295 295
296 ifneq ($(findstring s,$(MAKEFLAGS)),) 296 ifneq ($(findstring s,$(MAKEFLAGS)),)
297 quiet=silent_ 297 quiet=silent_
298 endif 298 endif
299 299
300 export quiet Q KBUILD_VERBOSE 300 export quiet Q KBUILD_VERBOSE
301 301
302 302
303 # Look for make include files relative to root of kernel src 303 # Look for make include files relative to root of kernel src
304 MAKEFLAGS += --include-dir=$(srctree) 304 MAKEFLAGS += --include-dir=$(srctree)
305 305
306 # We need some generic definitions (do not try to remake the file). 306 # We need some generic definitions (do not try to remake the file).
307 $(srctree)/scripts/Kbuild.include: ; 307 $(srctree)/scripts/Kbuild.include: ;
308 include $(srctree)/scripts/Kbuild.include 308 include $(srctree)/scripts/Kbuild.include
309 309
310 # Make variables (CC, etc...) 310 # Make variables (CC, etc...)
311 311
312 AS = $(CROSS_COMPILE)as 312 AS = $(CROSS_COMPILE)as
313 LD = $(CROSS_COMPILE)ld 313 LD = $(CROSS_COMPILE)ld
314 CC = $(CROSS_COMPILE)gcc 314 CC = $(CROSS_COMPILE)gcc
315 CPP = $(CC) -E 315 CPP = $(CC) -E
316 AR = $(CROSS_COMPILE)ar 316 AR = $(CROSS_COMPILE)ar
317 NM = $(CROSS_COMPILE)nm 317 NM = $(CROSS_COMPILE)nm
318 STRIP = $(CROSS_COMPILE)strip 318 STRIP = $(CROSS_COMPILE)strip
319 OBJCOPY = $(CROSS_COMPILE)objcopy 319 OBJCOPY = $(CROSS_COMPILE)objcopy
320 OBJDUMP = $(CROSS_COMPILE)objdump 320 OBJDUMP = $(CROSS_COMPILE)objdump
321 AWK = awk 321 AWK = awk
322 GENKSYMS = scripts/genksyms/genksyms 322 GENKSYMS = scripts/genksyms/genksyms
323 DEPMOD = /sbin/depmod 323 DEPMOD = /sbin/depmod
324 KALLSYMS = scripts/kallsyms 324 KALLSYMS = scripts/kallsyms
325 PERL = perl 325 PERL = perl
326 CHECK = sparse 326 CHECK = sparse
327 327
328 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 328 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
329 -Wbitwise -Wno-return-void $(CF) 329 -Wbitwise -Wno-return-void $(CF)
330 MODFLAGS = -DMODULE 330 MODFLAGS = -DMODULE
331 CFLAGS_MODULE = $(MODFLAGS) 331 CFLAGS_MODULE = $(MODFLAGS)
332 AFLAGS_MODULE = $(MODFLAGS) 332 AFLAGS_MODULE = $(MODFLAGS)
333 LDFLAGS_MODULE = 333 LDFLAGS_MODULE =
334 CFLAGS_KERNEL = 334 CFLAGS_KERNEL =
335 AFLAGS_KERNEL = 335 AFLAGS_KERNEL =
336 336
337 337
338 # Use LINUXINCLUDE when you must reference the include/ directory. 338 # Use LINUXINCLUDE when you must reference the include/ directory.
339 # Needed to be compatible with the O= option 339 # Needed to be compatible with the O= option
340 LINUXINCLUDE := -Iinclude \ 340 LINUXINCLUDE := -Iinclude \
341 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ 341 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
342 -I$(srctree)/arch/$(hdr-arch)/include \ 342 -I$(srctree)/arch/$(hdr-arch)/include \
343 -include include/linux/autoconf.h 343 -include include/linux/autoconf.h
344 344
345 KBUILD_CPPFLAGS := -D__KERNEL__ 345 KBUILD_CPPFLAGS := -D__KERNEL__
346 346
347 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 347 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
348 -fno-strict-aliasing -fno-common \ 348 -fno-strict-aliasing -fno-common \
349 -Werror-implicit-function-declaration 349 -Werror-implicit-function-declaration
350 KBUILD_AFLAGS := -D__ASSEMBLY__ 350 KBUILD_AFLAGS := -D__ASSEMBLY__
351 351
352 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 352 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
353 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 353 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
354 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 354 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
355 355
356 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 356 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
357 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 357 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
358 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE 358 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
359 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 359 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
360 360
361 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 361 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
362 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 362 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
363 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 363 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
364 364
365 # When compiling out-of-tree modules, put MODVERDIR in the module 365 # When compiling out-of-tree modules, put MODVERDIR in the module
366 # tree rather than in the kernel tree. The kernel tree might 366 # tree rather than in the kernel tree. The kernel tree might
367 # even be read-only. 367 # even be read-only.
368 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 368 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
369 369
370 # Files to ignore in find ... statements 370 # Files to ignore in find ... statements
371 371
372 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 372 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
373 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 373 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
374 374
375 # =========================================================================== 375 # ===========================================================================
376 # Rules shared between *config targets and build targets 376 # Rules shared between *config targets and build targets
377 377
378 # Basic helpers built in scripts/ 378 # Basic helpers built in scripts/
379 PHONY += scripts_basic 379 PHONY += scripts_basic
380 scripts_basic: 380 scripts_basic:
381 $(Q)$(MAKE) $(build)=scripts/basic 381 $(Q)$(MAKE) $(build)=scripts/basic
382 382
383 # To avoid any implicit rule to kick in, define an empty command. 383 # To avoid any implicit rule to kick in, define an empty command.
384 scripts/basic/%: scripts_basic ; 384 scripts/basic/%: scripts_basic ;
385 385
386 PHONY += outputmakefile 386 PHONY += outputmakefile
387 # outputmakefile generates a Makefile in the output directory, if using a 387 # outputmakefile generates a Makefile in the output directory, if using a
388 # separate output directory. This allows convenient use of make in the 388 # separate output directory. This allows convenient use of make in the
389 # output directory. 389 # output directory.
390 outputmakefile: 390 outputmakefile:
391 ifneq ($(KBUILD_SRC),) 391 ifneq ($(KBUILD_SRC),)
392 $(Q)ln -fsn $(srctree) source
392 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 393 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
393 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 394 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
394 endif 395 endif
395 396
396 # To make sure we do not include .config for any of the *config targets 397 # To make sure we do not include .config for any of the *config targets
397 # catch them early, and hand them over to scripts/kconfig/Makefile 398 # catch them early, and hand them over to scripts/kconfig/Makefile
398 # It is allowed to specify more targets when calling make, including 399 # It is allowed to specify more targets when calling make, including
399 # mixing *config targets and build targets. 400 # mixing *config targets and build targets.
400 # For example 'make oldconfig all'. 401 # For example 'make oldconfig all'.
401 # Detect when mixed targets is specified, and make a second invocation 402 # Detect when mixed targets is specified, and make a second invocation
402 # of make so .config is not included in this case either (for *config). 403 # of make so .config is not included in this case either (for *config).
403 404
404 no-dot-config-targets := clean mrproper distclean \ 405 no-dot-config-targets := clean mrproper distclean \
405 cscope TAGS tags help %docs check% \ 406 cscope TAGS tags help %docs check% \
406 include/linux/version.h headers_% \ 407 include/linux/version.h headers_% \
407 kernelrelease kernelversion 408 kernelrelease kernelversion
408 409
409 config-targets := 0 410 config-targets := 0
410 mixed-targets := 0 411 mixed-targets := 0
411 dot-config := 1 412 dot-config := 1
412 413
413 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 414 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
414 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 415 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
415 dot-config := 0 416 dot-config := 0
416 endif 417 endif
417 endif 418 endif
418 419
419 ifeq ($(KBUILD_EXTMOD),) 420 ifeq ($(KBUILD_EXTMOD),)
420 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 421 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
421 config-targets := 1 422 config-targets := 1
422 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 423 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
423 mixed-targets := 1 424 mixed-targets := 1
424 endif 425 endif
425 endif 426 endif
426 endif 427 endif
427 428
428 ifeq ($(mixed-targets),1) 429 ifeq ($(mixed-targets),1)
429 # =========================================================================== 430 # ===========================================================================
430 # We're called with mixed targets (*config and build targets). 431 # We're called with mixed targets (*config and build targets).
431 # Handle them one by one. 432 # Handle them one by one.
432 433
433 %:: FORCE 434 %:: FORCE
434 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 435 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
435 436
436 else 437 else
437 ifeq ($(config-targets),1) 438 ifeq ($(config-targets),1)
438 # =========================================================================== 439 # ===========================================================================
439 # *config targets only - make sure prerequisites are updated, and descend 440 # *config targets only - make sure prerequisites are updated, and descend
440 # in scripts/kconfig to make the *config target 441 # in scripts/kconfig to make the *config target
441 442
442 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 443 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
443 # KBUILD_DEFCONFIG may point out an alternative default configuration 444 # KBUILD_DEFCONFIG may point out an alternative default configuration
444 # used for 'make defconfig' 445 # used for 'make defconfig'
445 include $(srctree)/arch/$(SRCARCH)/Makefile 446 include $(srctree)/arch/$(SRCARCH)/Makefile
446 export KBUILD_DEFCONFIG KBUILD_KCONFIG 447 export KBUILD_DEFCONFIG KBUILD_KCONFIG
447 448
448 config: scripts_basic outputmakefile FORCE 449 config: scripts_basic outputmakefile FORCE
449 $(Q)mkdir -p include/linux include/config 450 $(Q)mkdir -p include/linux include/config
450 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 451 $(Q)$(MAKE) $(build)=scripts/kconfig $@
451 452
452 %config: scripts_basic outputmakefile FORCE 453 %config: scripts_basic outputmakefile FORCE
453 $(Q)mkdir -p include/linux include/config 454 $(Q)mkdir -p include/linux include/config
454 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 455 $(Q)$(MAKE) $(build)=scripts/kconfig $@
455 456
456 else 457 else
457 # =========================================================================== 458 # ===========================================================================
458 # Build targets only - this includes vmlinux, arch specific targets, clean 459 # Build targets only - this includes vmlinux, arch specific targets, clean
459 # targets and others. In general all targets except *config targets. 460 # targets and others. In general all targets except *config targets.
460 461
461 ifeq ($(KBUILD_EXTMOD),) 462 ifeq ($(KBUILD_EXTMOD),)
462 # Additional helpers built in scripts/ 463 # Additional helpers built in scripts/
463 # Carefully list dependencies so we do not try to build scripts twice 464 # Carefully list dependencies so we do not try to build scripts twice
464 # in parallel 465 # in parallel
465 PHONY += scripts 466 PHONY += scripts
466 scripts: scripts_basic include/config/auto.conf 467 scripts: scripts_basic include/config/auto.conf
467 $(Q)$(MAKE) $(build)=$(@) 468 $(Q)$(MAKE) $(build)=$(@)
468 469
469 # Objects we will link into vmlinux / subdirs we need to visit 470 # Objects we will link into vmlinux / subdirs we need to visit
470 init-y := init/ 471 init-y := init/
471 drivers-y := drivers/ sound/ firmware/ 472 drivers-y := drivers/ sound/ firmware/
472 net-y := net/ 473 net-y := net/
473 libs-y := lib/ 474 libs-y := lib/
474 core-y := usr/ 475 core-y := usr/
475 endif # KBUILD_EXTMOD 476 endif # KBUILD_EXTMOD
476 477
477 ifeq ($(dot-config),1) 478 ifeq ($(dot-config),1)
478 # Read in config 479 # Read in config
479 -include include/config/auto.conf 480 -include include/config/auto.conf
480 481
481 ifeq ($(KBUILD_EXTMOD),) 482 ifeq ($(KBUILD_EXTMOD),)
482 # Read in dependencies to all Kconfig* files, make sure to run 483 # Read in dependencies to all Kconfig* files, make sure to run
483 # oldconfig if changes are detected. 484 # oldconfig if changes are detected.
484 -include include/config/auto.conf.cmd 485 -include include/config/auto.conf.cmd
485 486
486 # To avoid any implicit rule to kick in, define an empty command 487 # To avoid any implicit rule to kick in, define an empty command
487 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 488 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
488 489
489 # If .config is newer than include/config/auto.conf, someone tinkered 490 # If .config is newer than include/config/auto.conf, someone tinkered
490 # with it and forgot to run make oldconfig. 491 # with it and forgot to run make oldconfig.
491 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 492 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
492 # we execute the config step to be sure to catch updated Kconfig files 493 # we execute the config step to be sure to catch updated Kconfig files
493 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 494 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
494 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 495 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
495 else 496 else
496 # external modules needs include/linux/autoconf.h and include/config/auto.conf 497 # external modules needs include/linux/autoconf.h and include/config/auto.conf
497 # but do not care if they are up-to-date. Use auto.conf to trigger the test 498 # but do not care if they are up-to-date. Use auto.conf to trigger the test
498 PHONY += include/config/auto.conf 499 PHONY += include/config/auto.conf
499 500
500 include/config/auto.conf: 501 include/config/auto.conf:
501 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ 502 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \
502 echo; \ 503 echo; \
503 echo " ERROR: Kernel configuration is invalid."; \ 504 echo " ERROR: Kernel configuration is invalid."; \
504 echo " include/linux/autoconf.h or $@ are missing."; \ 505 echo " include/linux/autoconf.h or $@ are missing."; \
505 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 506 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
506 echo; \ 507 echo; \
507 /bin/false) 508 /bin/false)
508 509
509 endif # KBUILD_EXTMOD 510 endif # KBUILD_EXTMOD
510 511
511 else 512 else
512 # Dummy target needed, because used as prerequisite 513 # Dummy target needed, because used as prerequisite
513 include/config/auto.conf: ; 514 include/config/auto.conf: ;
514 endif # $(dot-config) 515 endif # $(dot-config)
515 516
516 # The all: target is the default when no target is given on the 517 # The all: target is the default when no target is given on the
517 # command line. 518 # command line.
518 # This allow a user to issue only 'make' to build a kernel including modules 519 # This allow a user to issue only 'make' to build a kernel including modules
519 # Defaults vmlinux but it is usually overridden in the arch makefile 520 # Defaults vmlinux but it is usually overridden in the arch makefile
520 all: vmlinux 521 all: vmlinux
521 522
522 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 523 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
523 KBUILD_CFLAGS += -Os 524 KBUILD_CFLAGS += -Os
524 else 525 else
525 KBUILD_CFLAGS += -O2 526 KBUILD_CFLAGS += -O2
526 endif 527 endif
527 528
528 include $(srctree)/arch/$(SRCARCH)/Makefile 529 include $(srctree)/arch/$(SRCARCH)/Makefile
529 530
530 ifneq (CONFIG_FRAME_WARN,0) 531 ifneq (CONFIG_FRAME_WARN,0)
531 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 532 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
532 endif 533 endif
533 534
534 # Force gcc to behave correct even for buggy distributions 535 # Force gcc to behave correct even for buggy distributions
535 # Arch Makefiles may override this setting 536 # Arch Makefiles may override this setting
536 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) 537 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
537 538
538 ifdef CONFIG_FRAME_POINTER 539 ifdef CONFIG_FRAME_POINTER
539 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 540 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
540 else 541 else
541 KBUILD_CFLAGS += -fomit-frame-pointer 542 KBUILD_CFLAGS += -fomit-frame-pointer
542 endif 543 endif
543 544
544 ifdef CONFIG_DEBUG_INFO 545 ifdef CONFIG_DEBUG_INFO
545 KBUILD_CFLAGS += -g 546 KBUILD_CFLAGS += -g
546 KBUILD_AFLAGS += -gdwarf-2 547 KBUILD_AFLAGS += -gdwarf-2
547 endif 548 endif
548 549
549 ifdef CONFIG_FUNCTION_TRACER 550 ifdef CONFIG_FUNCTION_TRACER
550 KBUILD_CFLAGS += -pg 551 KBUILD_CFLAGS += -pg
551 endif 552 endif
552 553
553 # We trigger additional mismatches with less inlining 554 # We trigger additional mismatches with less inlining
554 ifdef CONFIG_DEBUG_SECTION_MISMATCH 555 ifdef CONFIG_DEBUG_SECTION_MISMATCH
555 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 556 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
556 endif 557 endif
557 558
558 # arch Makefile may override CC so keep this after arch Makefile is included 559 # arch Makefile may override CC so keep this after arch Makefile is included
559 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 560 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
560 CHECKFLAGS += $(NOSTDINC_FLAGS) 561 CHECKFLAGS += $(NOSTDINC_FLAGS)
561 562
562 # warn about C99 declaration after statement 563 # warn about C99 declaration after statement
563 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 564 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
564 565
565 # disable pointer signed / unsigned warnings in gcc 4.0 566 # disable pointer signed / unsigned warnings in gcc 4.0
566 KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) 567 KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
567 568
568 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 569 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
569 # But warn user when we do so 570 # But warn user when we do so
570 warn-assign = \ 571 warn-assign = \
571 $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") 572 $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
572 573
573 ifneq ($(KCPPFLAGS),) 574 ifneq ($(KCPPFLAGS),)
574 $(call warn-assign,CPPFLAGS) 575 $(call warn-assign,CPPFLAGS)
575 KBUILD_CPPFLAGS += $(KCPPFLAGS) 576 KBUILD_CPPFLAGS += $(KCPPFLAGS)
576 endif 577 endif
577 ifneq ($(KAFLAGS),) 578 ifneq ($(KAFLAGS),)
578 $(call warn-assign,AFLAGS) 579 $(call warn-assign,AFLAGS)
579 KBUILD_AFLAGS += $(KAFLAGS) 580 KBUILD_AFLAGS += $(KAFLAGS)
580 endif 581 endif
581 ifneq ($(KCFLAGS),) 582 ifneq ($(KCFLAGS),)
582 $(call warn-assign,CFLAGS) 583 $(call warn-assign,CFLAGS)
583 KBUILD_CFLAGS += $(KCFLAGS) 584 KBUILD_CFLAGS += $(KCFLAGS)
584 endif 585 endif
585 586
586 # Use --build-id when available. 587 # Use --build-id when available.
587 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 588 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
588 $(call ld-option, -Wl$(comma)--build-id,)) 589 $(call ld-option, -Wl$(comma)--build-id,))
589 LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 590 LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
590 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 591 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
591 592
592 # Default kernel image to build when no specific target is given. 593 # Default kernel image to build when no specific target is given.
593 # KBUILD_IMAGE may be overruled on the command line or 594 # KBUILD_IMAGE may be overruled on the command line or
594 # set in the environment 595 # set in the environment
595 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 596 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
596 # this default value 597 # this default value
597 export KBUILD_IMAGE ?= vmlinux 598 export KBUILD_IMAGE ?= vmlinux
598 599
599 # 600 #
600 # INSTALL_PATH specifies where to place the updated kernel and system map 601 # INSTALL_PATH specifies where to place the updated kernel and system map
601 # images. Default is /boot, but you can set it to other values 602 # images. Default is /boot, but you can set it to other values
602 export INSTALL_PATH ?= /boot 603 export INSTALL_PATH ?= /boot
603 604
604 # 605 #
605 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 606 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
606 # relocations required by build roots. This is not defined in the 607 # relocations required by build roots. This is not defined in the
607 # makefile but the argument can be passed to make if needed. 608 # makefile but the argument can be passed to make if needed.
608 # 609 #
609 610
610 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 611 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
611 export MODLIB 612 export MODLIB
612 613
613 # 614 #
614 # INSTALL_MOD_STRIP, if defined, will cause modules to be 615 # INSTALL_MOD_STRIP, if defined, will cause modules to be
615 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 616 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
616 # the default option --strip-debug will be used. Otherwise, 617 # the default option --strip-debug will be used. Otherwise,
617 # INSTALL_MOD_STRIP will used as the options to the strip command. 618 # INSTALL_MOD_STRIP will used as the options to the strip command.
618 619
619 ifdef INSTALL_MOD_STRIP 620 ifdef INSTALL_MOD_STRIP
620 ifeq ($(INSTALL_MOD_STRIP),1) 621 ifeq ($(INSTALL_MOD_STRIP),1)
621 mod_strip_cmd = $(STRIP) --strip-debug 622 mod_strip_cmd = $(STRIP) --strip-debug
622 else 623 else
623 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 624 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
624 endif # INSTALL_MOD_STRIP=1 625 endif # INSTALL_MOD_STRIP=1
625 else 626 else
626 mod_strip_cmd = true 627 mod_strip_cmd = true
627 endif # INSTALL_MOD_STRIP 628 endif # INSTALL_MOD_STRIP
628 export mod_strip_cmd 629 export mod_strip_cmd
629 630
630 631
631 ifeq ($(KBUILD_EXTMOD),) 632 ifeq ($(KBUILD_EXTMOD),)
632 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 633 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
633 634
634 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 635 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
635 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 636 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
636 $(net-y) $(net-m) $(libs-y) $(libs-m))) 637 $(net-y) $(net-m) $(libs-y) $(libs-m)))
637 638
638 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 639 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
639 $(init-n) $(init-) \ 640 $(init-n) $(init-) \
640 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 641 $(core-n) $(core-) $(drivers-n) $(drivers-) \
641 $(net-n) $(net-) $(libs-n) $(libs-)))) 642 $(net-n) $(net-) $(libs-n) $(libs-))))
642 643
643 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 644 init-y := $(patsubst %/, %/built-in.o, $(init-y))
644 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 645 core-y := $(patsubst %/, %/built-in.o, $(core-y))
645 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 646 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
646 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 647 net-y := $(patsubst %/, %/built-in.o, $(net-y))
647 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 648 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
648 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 649 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
649 libs-y := $(libs-y1) $(libs-y2) 650 libs-y := $(libs-y1) $(libs-y2)
650 651
651 # Build vmlinux 652 # Build vmlinux
652 # --------------------------------------------------------------------------- 653 # ---------------------------------------------------------------------------
653 # vmlinux is built from the objects selected by $(vmlinux-init) and 654 # vmlinux is built from the objects selected by $(vmlinux-init) and
654 # $(vmlinux-main). Most are built-in.o files from top-level directories 655 # $(vmlinux-main). Most are built-in.o files from top-level directories
655 # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. 656 # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
656 # Ordering when linking is important, and $(vmlinux-init) must be first. 657 # Ordering when linking is important, and $(vmlinux-init) must be first.
657 # 658 #
658 # vmlinux 659 # vmlinux
659 # ^ 660 # ^
660 # | 661 # |
661 # +-< $(vmlinux-init) 662 # +-< $(vmlinux-init)
662 # | +--< init/version.o + more 663 # | +--< init/version.o + more
663 # | 664 # |
664 # +--< $(vmlinux-main) 665 # +--< $(vmlinux-main)
665 # | +--< driver/built-in.o mm/built-in.o + more 666 # | +--< driver/built-in.o mm/built-in.o + more
666 # | 667 # |
667 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 668 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
668 # 669 #
669 # vmlinux version (uname -v) cannot be updated during normal 670 # vmlinux version (uname -v) cannot be updated during normal
670 # descending-into-subdirs phase since we do not yet know if we need to 671 # descending-into-subdirs phase since we do not yet know if we need to
671 # update vmlinux. 672 # update vmlinux.
672 # Therefore this step is delayed until just before final link of vmlinux - 673 # Therefore this step is delayed until just before final link of vmlinux -
673 # except in the kallsyms case where it is done just before adding the 674 # except in the kallsyms case where it is done just before adding the
674 # symbols to the kernel. 675 # symbols to the kernel.
675 # 676 #
676 # System.map is generated to document addresses of all kernel symbols 677 # System.map is generated to document addresses of all kernel symbols
677 678
678 vmlinux-init := $(head-y) $(init-y) 679 vmlinux-init := $(head-y) $(init-y)
679 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 680 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
680 vmlinux-all := $(vmlinux-init) $(vmlinux-main) 681 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
681 vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds 682 vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds
682 export KBUILD_VMLINUX_OBJS := $(vmlinux-all) 683 export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
683 684
684 # Rule to link vmlinux - also used during CONFIG_KALLSYMS 685 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
685 # May be overridden by arch/$(ARCH)/Makefile 686 # May be overridden by arch/$(ARCH)/Makefile
686 quiet_cmd_vmlinux__ ?= LD $@ 687 quiet_cmd_vmlinux__ ?= LD $@
687 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 688 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
688 -T $(vmlinux-lds) $(vmlinux-init) \ 689 -T $(vmlinux-lds) $(vmlinux-init) \
689 --start-group $(vmlinux-main) --end-group \ 690 --start-group $(vmlinux-main) --end-group \
690 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) 691 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
691 692
692 # Generate new vmlinux version 693 # Generate new vmlinux version
693 quiet_cmd_vmlinux_version = GEN .version 694 quiet_cmd_vmlinux_version = GEN .version
694 cmd_vmlinux_version = set -e; \ 695 cmd_vmlinux_version = set -e; \
695 if [ ! -r .version ]; then \ 696 if [ ! -r .version ]; then \
696 rm -f .version; \ 697 rm -f .version; \
697 echo 1 >.version; \ 698 echo 1 >.version; \
698 else \ 699 else \
699 mv .version .old_version; \ 700 mv .version .old_version; \
700 expr 0$$(cat .old_version) + 1 >.version; \ 701 expr 0$$(cat .old_version) + 1 >.version; \
701 fi; \ 702 fi; \
702 $(MAKE) $(build)=init 703 $(MAKE) $(build)=init
703 704
704 # Generate System.map 705 # Generate System.map
705 quiet_cmd_sysmap = SYSMAP 706 quiet_cmd_sysmap = SYSMAP
706 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 707 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
707 708
708 # Link of vmlinux 709 # Link of vmlinux
709 # If CONFIG_KALLSYMS is set .version is already updated 710 # If CONFIG_KALLSYMS is set .version is already updated
710 # Generate System.map and verify that the content is consistent 711 # Generate System.map and verify that the content is consistent
711 # Use + in front of the vmlinux_version rule to silent warning with make -j2 712 # Use + in front of the vmlinux_version rule to silent warning with make -j2
712 # First command is ':' to allow us to use + in front of the rule 713 # First command is ':' to allow us to use + in front of the rule
713 define rule_vmlinux__ 714 define rule_vmlinux__
714 : 715 :
715 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 716 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
716 717
717 $(call cmd,vmlinux__) 718 $(call cmd,vmlinux__)
718 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 719 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
719 720
720 $(Q)$(if $($(quiet)cmd_sysmap), \ 721 $(Q)$(if $($(quiet)cmd_sysmap), \
721 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 722 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
722 $(cmd_sysmap) $@ System.map; \ 723 $(cmd_sysmap) $@ System.map; \
723 if [ $$? -ne 0 ]; then \ 724 if [ $$? -ne 0 ]; then \
724 rm -f $@; \ 725 rm -f $@; \
725 /bin/false; \ 726 /bin/false; \
726 fi; 727 fi;
727 $(verify_kallsyms) 728 $(verify_kallsyms)
728 endef 729 endef
729 730
730 731
731 ifdef CONFIG_KALLSYMS 732 ifdef CONFIG_KALLSYMS
732 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 733 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
733 # It's a three stage process: 734 # It's a three stage process:
734 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 735 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
735 # empty 736 # empty
736 # Running kallsyms on that gives us .tmp_kallsyms1.o with 737 # Running kallsyms on that gives us .tmp_kallsyms1.o with
737 # the right size - vmlinux version (uname -v) is updated during this step 738 # the right size - vmlinux version (uname -v) is updated during this step
738 # o .tmp_vmlinux2 now has a __kallsyms section of the right size, 739 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
739 # but due to the added section, some addresses have shifted. 740 # but due to the added section, some addresses have shifted.
740 # From here, we generate a correct .tmp_kallsyms2.o 741 # From here, we generate a correct .tmp_kallsyms2.o
741 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 742 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
742 # o Verify that the System.map from vmlinux matches the map from 743 # o Verify that the System.map from vmlinux matches the map from
743 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 744 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
744 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using 745 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
745 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 746 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
746 # temporary bypass to allow the kernel to be built while the 747 # temporary bypass to allow the kernel to be built while the
747 # maintainers work out what went wrong with kallsyms. 748 # maintainers work out what went wrong with kallsyms.
748 749
749 ifdef CONFIG_KALLSYMS_EXTRA_PASS 750 ifdef CONFIG_KALLSYMS_EXTRA_PASS
750 last_kallsyms := 3 751 last_kallsyms := 3
751 else 752 else
752 last_kallsyms := 2 753 last_kallsyms := 2
753 endif 754 endif
754 755
755 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 756 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
756 757
757 define verify_kallsyms 758 define verify_kallsyms
758 $(Q)$(if $($(quiet)cmd_sysmap), \ 759 $(Q)$(if $($(quiet)cmd_sysmap), \
759 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 760 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
760 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 761 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
761 $(Q)cmp -s System.map .tmp_System.map || \ 762 $(Q)cmp -s System.map .tmp_System.map || \
762 (echo Inconsistent kallsyms data; \ 763 (echo Inconsistent kallsyms data; \
763 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ 764 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
764 rm .tmp_kallsyms* ; /bin/false ) 765 rm .tmp_kallsyms* ; /bin/false )
765 endef 766 endef
766 767
767 # Update vmlinux version before link 768 # Update vmlinux version before link
768 # Use + in front of this rule to silent warning about make -j1 769 # Use + in front of this rule to silent warning about make -j1
769 # First command is ':' to allow us to use + in front of this rule 770 # First command is ':' to allow us to use + in front of this rule
770 cmd_ksym_ld = $(cmd_vmlinux__) 771 cmd_ksym_ld = $(cmd_vmlinux__)
771 define rule_ksym_ld 772 define rule_ksym_ld
772 : 773 :
773 +$(call cmd,vmlinux_version) 774 +$(call cmd,vmlinux_version)
774 $(call cmd,vmlinux__) 775 $(call cmd,vmlinux__)
775 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 776 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
776 endef 777 endef
777 778
778 # Generate .S file with all kernel symbols 779 # Generate .S file with all kernel symbols
779 quiet_cmd_kallsyms = KSYM $@ 780 quiet_cmd_kallsyms = KSYM $@
780 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 781 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
781 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 782 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
782 783
783 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 784 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
784 $(call if_changed_dep,as_o_S) 785 $(call if_changed_dep,as_o_S)
785 786
786 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 787 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
787 $(call cmd,kallsyms) 788 $(call cmd,kallsyms)
788 789
789 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 790 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
790 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 791 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
791 $(call if_changed_rule,ksym_ld) 792 $(call if_changed_rule,ksym_ld)
792 793
793 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 794 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
794 $(call if_changed,vmlinux__) 795 $(call if_changed,vmlinux__)
795 796
796 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 797 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
797 $(call if_changed,vmlinux__) 798 $(call if_changed,vmlinux__)
798 799
799 # Needs to visit scripts/ before $(KALLSYMS) can be used. 800 # Needs to visit scripts/ before $(KALLSYMS) can be used.
800 $(KALLSYMS): scripts ; 801 $(KALLSYMS): scripts ;
801 802
802 # Generate some data for debugging strange kallsyms problems 803 # Generate some data for debugging strange kallsyms problems
803 debug_kallsyms: .tmp_map$(last_kallsyms) 804 debug_kallsyms: .tmp_map$(last_kallsyms)
804 805
805 .tmp_map%: .tmp_vmlinux% FORCE 806 .tmp_map%: .tmp_vmlinux% FORCE
806 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 807 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
807 808
808 .tmp_map3: .tmp_map2 809 .tmp_map3: .tmp_map2
809 810
810 .tmp_map2: .tmp_map1 811 .tmp_map2: .tmp_map1
811 812
812 endif # ifdef CONFIG_KALLSYMS 813 endif # ifdef CONFIG_KALLSYMS
813 814
814 # Do modpost on a prelinked vmlinux. The finally linked vmlinux has 815 # Do modpost on a prelinked vmlinux. The finally linked vmlinux has
815 # relevant sections renamed as per the linker script. 816 # relevant sections renamed as per the linker script.
816 quiet_cmd_vmlinux-modpost = LD $@ 817 quiet_cmd_vmlinux-modpost = LD $@
817 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ 818 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
818 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ 819 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \
819 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 820 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
820 define rule_vmlinux-modpost 821 define rule_vmlinux-modpost
821 : 822 :
822 +$(call cmd,vmlinux-modpost) 823 +$(call cmd,vmlinux-modpost)
823 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ 824 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
824 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd 825 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
825 endef 826 endef
826 827
827 # vmlinux image - including updated kernel symbols 828 # vmlinux image - including updated kernel symbols
828 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE 829 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE
829 ifdef CONFIG_HEADERS_CHECK 830 ifdef CONFIG_HEADERS_CHECK
830 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 831 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
831 endif 832 endif
832 ifdef CONFIG_SAMPLES 833 ifdef CONFIG_SAMPLES
833 $(Q)$(MAKE) $(build)=samples 834 $(Q)$(MAKE) $(build)=samples
834 endif 835 endif
835 ifdef CONFIG_BUILD_DOCSRC 836 ifdef CONFIG_BUILD_DOCSRC
836 $(Q)$(MAKE) $(build)=Documentation 837 $(Q)$(MAKE) $(build)=Documentation
837 endif 838 endif
838 $(call vmlinux-modpost) 839 $(call vmlinux-modpost)
839 $(call if_changed_rule,vmlinux__) 840 $(call if_changed_rule,vmlinux__)
840 $(Q)rm -f .old_version 841 $(Q)rm -f .old_version
841 842
842 # build vmlinux.o first to catch section mismatch errors early 843 # build vmlinux.o first to catch section mismatch errors early
843 ifdef CONFIG_KALLSYMS 844 ifdef CONFIG_KALLSYMS
844 .tmp_vmlinux1: vmlinux.o 845 .tmp_vmlinux1: vmlinux.o
845 endif 846 endif
846 847
847 modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) 848 modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))
848 vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE 849 vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE
849 $(call if_changed_rule,vmlinux-modpost) 850 $(call if_changed_rule,vmlinux-modpost)
850 851
851 # The actual objects are generated when descending, 852 # The actual objects are generated when descending,
852 # make sure no implicit rule kicks in 853 # make sure no implicit rule kicks in
853 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 854 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
854 855
855 # Handle descending into subdirectories listed in $(vmlinux-dirs) 856 # Handle descending into subdirectories listed in $(vmlinux-dirs)
856 # Preset locale variables to speed up the build process. Limit locale 857 # Preset locale variables to speed up the build process. Limit locale
857 # tweaks to this spot to avoid wrong language settings when running 858 # tweaks to this spot to avoid wrong language settings when running
858 # make menuconfig etc. 859 # make menuconfig etc.
859 # Error messages still appears in the original language 860 # Error messages still appears in the original language
860 861
861 PHONY += $(vmlinux-dirs) 862 PHONY += $(vmlinux-dirs)
862 $(vmlinux-dirs): prepare scripts 863 $(vmlinux-dirs): prepare scripts
863 $(Q)$(MAKE) $(build)=$@ 864 $(Q)$(MAKE) $(build)=$@
864 865
865 # Build the kernel release string 866 # Build the kernel release string
866 # 867 #
867 # The KERNELRELEASE value built here is stored in the file 868 # The KERNELRELEASE value built here is stored in the file
868 # include/config/kernel.release, and is used when executing several 869 # include/config/kernel.release, and is used when executing several
869 # make targets, such as "make install" or "make modules_install." 870 # make targets, such as "make install" or "make modules_install."
870 # 871 #
871 # The eventual kernel release string consists of the following fields, 872 # The eventual kernel release string consists of the following fields,
872 # shown in a hierarchical format to show how smaller parts are concatenated 873 # shown in a hierarchical format to show how smaller parts are concatenated
873 # to form the larger and final value, with values coming from places like 874 # to form the larger and final value, with values coming from places like
874 # the Makefile, kernel config options, make command line options and/or 875 # the Makefile, kernel config options, make command line options and/or
875 # SCM tag information. 876 # SCM tag information.
876 # 877 #
877 # $(KERNELVERSION) 878 # $(KERNELVERSION)
878 # $(VERSION) eg, 2 879 # $(VERSION) eg, 2
879 # $(PATCHLEVEL) eg, 6 880 # $(PATCHLEVEL) eg, 6
880 # $(SUBLEVEL) eg, 18 881 # $(SUBLEVEL) eg, 18
881 # $(EXTRAVERSION) eg, -rc6 882 # $(EXTRAVERSION) eg, -rc6
882 # $(localver-full) 883 # $(localver-full)
883 # $(localver) 884 # $(localver)
884 # localversion* (files without backups, containing '~') 885 # localversion* (files without backups, containing '~')
885 # $(CONFIG_LOCALVERSION) (from kernel config setting) 886 # $(CONFIG_LOCALVERSION) (from kernel config setting)
886 # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) 887 # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
887 # ./scripts/setlocalversion (SCM tag, if one exists) 888 # ./scripts/setlocalversion (SCM tag, if one exists)
888 # $(LOCALVERSION) (from make command line if provided) 889 # $(LOCALVERSION) (from make command line if provided)
889 # 890 #
890 # Note how the final $(localver-auto) string is included *only* if the 891 # Note how the final $(localver-auto) string is included *only* if the
891 # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the 892 # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
892 # moment, only git is supported but other SCMs can edit the script 893 # moment, only git is supported but other SCMs can edit the script
893 # scripts/setlocalversion and add the appropriate checks as needed. 894 # scripts/setlocalversion and add the appropriate checks as needed.
894 895
895 pattern = ".*/localversion[^~]*" 896 pattern = ".*/localversion[^~]*"
896 string = $(shell cat /dev/null \ 897 string = $(shell cat /dev/null \
897 `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`) 898 `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`)
898 899
899 localver = $(subst $(space),, $(string) \ 900 localver = $(subst $(space),, $(string) \
900 $(patsubst "%",%,$(CONFIG_LOCALVERSION))) 901 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
901 902
902 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called 903 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
903 # and if the SCM is know a tag from the SCM is appended. 904 # and if the SCM is know a tag from the SCM is appended.
904 # The appended tag is determined by the SCM used. 905 # The appended tag is determined by the SCM used.
905 # 906 #
906 # Currently, only git is supported. 907 # Currently, only git is supported.
907 # Other SCMs can edit scripts/setlocalversion and add the appropriate 908 # Other SCMs can edit scripts/setlocalversion and add the appropriate
908 # checks as needed. 909 # checks as needed.
909 ifdef CONFIG_LOCALVERSION_AUTO 910 ifdef CONFIG_LOCALVERSION_AUTO
910 _localver-auto = $(shell $(CONFIG_SHELL) \ 911 _localver-auto = $(shell $(CONFIG_SHELL) \
911 $(srctree)/scripts/setlocalversion $(srctree)) 912 $(srctree)/scripts/setlocalversion $(srctree))
912 localver-auto = $(LOCALVERSION)$(_localver-auto) 913 localver-auto = $(LOCALVERSION)$(_localver-auto)
913 endif 914 endif
914 915
915 localver-full = $(localver)$(localver-auto) 916 localver-full = $(localver)$(localver-auto)
916 917
917 # Store (new) KERNELRELASE string in include/config/kernel.release 918 # Store (new) KERNELRELASE string in include/config/kernel.release
918 kernelrelease = $(KERNELVERSION)$(localver-full) 919 kernelrelease = $(KERNELVERSION)$(localver-full)
919 include/config/kernel.release: include/config/auto.conf FORCE 920 include/config/kernel.release: include/config/auto.conf FORCE
920 $(Q)rm -f $@ 921 $(Q)rm -f $@
921 $(Q)echo $(kernelrelease) > $@ 922 $(Q)echo $(kernelrelease) > $@
922 923
923 924
924 # Things we need to do before we recursively start building the kernel 925 # Things we need to do before we recursively start building the kernel
925 # or the modules are listed in "prepare". 926 # or the modules are listed in "prepare".
926 # A multi level approach is used. prepareN is processed before prepareN-1. 927 # A multi level approach is used. prepareN is processed before prepareN-1.
927 # archprepare is used in arch Makefiles and when processed asm symlink, 928 # archprepare is used in arch Makefiles and when processed asm symlink,
928 # version.h and scripts_basic is processed / created. 929 # version.h and scripts_basic is processed / created.
929 930
930 # Listed in dependency order 931 # Listed in dependency order
931 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 932 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
932 933
933 # prepare3 is used to check if we are building in a separate output directory, 934 # prepare3 is used to check if we are building in a separate output directory,
934 # and if so do: 935 # and if so do:
935 # 1) Check that make has not been executed in the kernel src $(srctree) 936 # 1) Check that make has not been executed in the kernel src $(srctree)
936 # 2) Create the include2 directory, used for the second asm symlink 937 # 2) Create the include2 directory, used for the second asm symlink
937 prepare3: include/config/kernel.release 938 prepare3: include/config/kernel.release
938 ifneq ($(KBUILD_SRC),) 939 ifneq ($(KBUILD_SRC),)
939 @$(kecho) ' Using $(srctree) as source for kernel' 940 @$(kecho) ' Using $(srctree) as source for kernel'
940 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 941 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
941 echo " $(srctree) is not clean, please run 'make mrproper'";\ 942 echo " $(srctree) is not clean, please run 'make mrproper'";\
942 echo " in the '$(srctree)' directory.";\ 943 echo " in the '$(srctree)' directory.";\
943 /bin/false; \ 944 /bin/false; \
944 fi; 945 fi;
945 $(Q)if [ ! -d include2 ]; then \ 946 $(Q)if [ ! -d include2 ]; then \
946 mkdir -p include2; \ 947 mkdir -p include2; \
947 ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \ 948 ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \
948 fi 949 fi
949 ln -fsn $(srctree) source
950 endif 950 endif
951 951
952 # prepare2 creates a makefile if using a separate output directory 952 # prepare2 creates a makefile if using a separate output directory
953 prepare2: prepare3 outputmakefile 953 prepare2: prepare3 outputmakefile
954 954
955 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ 955 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
956 include/asm include/config/auto.conf 956 include/asm include/config/auto.conf
957 $(cmd_crmodverdir) 957 $(cmd_crmodverdir)
958 958
959 archprepare: prepare1 scripts_basic 959 archprepare: prepare1 scripts_basic
960 960
961 prepare0: archprepare FORCE 961 prepare0: archprepare FORCE
962 $(Q)$(MAKE) $(build)=. 962 $(Q)$(MAKE) $(build)=.
963 $(Q)$(MAKE) $(build)=. missing-syscalls 963 $(Q)$(MAKE) $(build)=. missing-syscalls
964 964
965 # All the preparing.. 965 # All the preparing..
966 prepare: prepare0 966 prepare: prepare0
967 967
968 # Leave this as default for preprocessing vmlinux.lds.S, which is now 968 # Leave this as default for preprocessing vmlinux.lds.S, which is now
969 # done in arch/$(ARCH)/kernel/Makefile 969 # done in arch/$(ARCH)/kernel/Makefile
970 970
971 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) 971 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
972 972
973 # The asm symlink changes when $(ARCH) changes. 973 # The asm symlink changes when $(ARCH) changes.
974 # Detect this and ask user to run make mrproper 974 # Detect this and ask user to run make mrproper
975 # If asm is a stale symlink (point to dir that does not exist) remove it 975 # If asm is a stale symlink (point to dir that does not exist) remove it
976 define check-symlink 976 define check-symlink
977 set -e; \ 977 set -e; \
978 if [ -L include/asm ]; then \ 978 if [ -L include/asm ]; then \
979 asmlink=`readlink include/asm | cut -d '-' -f 2`; \ 979 asmlink=`readlink include/asm | cut -d '-' -f 2`; \
980 if [ "$$asmlink" != "$(SRCARCH)" ]; then \ 980 if [ "$$asmlink" != "$(SRCARCH)" ]; then \
981 echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \ 981 echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \
982 echo " set ARCH or save .config and run 'make mrproper' to fix it"; \ 982 echo " set ARCH or save .config and run 'make mrproper' to fix it"; \
983 exit 1; \ 983 exit 1; \
984 fi; \ 984 fi; \
985 test -e $$asmlink || rm include/asm; \ 985 test -e $$asmlink || rm include/asm; \
986 elif [ -d include/asm ]; then \ 986 elif [ -d include/asm ]; then \
987 echo "ERROR: $@ is a directory but a symlink was expected";\ 987 echo "ERROR: $@ is a directory but a symlink was expected";\
988 exit 1; \ 988 exit 1; \
989 fi 989 fi
990 endef 990 endef
991 991
992 # We create the target directory of the symlink if it does 992 # We create the target directory of the symlink if it does
993 # not exist so the test in check-symlink works and we have a 993 # not exist so the test in check-symlink works and we have a
994 # directory for generated filesas used by some architectures. 994 # directory for generated filesas used by some architectures.
995 define create-symlink 995 define create-symlink
996 if [ ! -L include/asm ]; then \ 996 if [ ! -L include/asm ]; then \
997 $(kecho) ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \ 997 $(kecho) ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \
998 if [ ! -d include/asm-$(SRCARCH) ]; then \ 998 if [ ! -d include/asm-$(SRCARCH) ]; then \
999 mkdir -p include/asm-$(SRCARCH); \ 999 mkdir -p include/asm-$(SRCARCH); \
1000 fi; \ 1000 fi; \
1001 ln -fsn asm-$(SRCARCH) $@; \ 1001 ln -fsn asm-$(SRCARCH) $@; \
1002 fi 1002 fi
1003 endef 1003 endef
1004 1004
1005 include/asm: FORCE 1005 include/asm: FORCE
1006 $(Q)$(check-symlink) 1006 $(Q)$(check-symlink)
1007 $(Q)$(create-symlink) 1007 $(Q)$(create-symlink)
1008 1008
1009 # Generate some files 1009 # Generate some files
1010 # --------------------------------------------------------------------------- 1010 # ---------------------------------------------------------------------------
1011 1011
1012 # KERNELRELEASE can change from a few different places, meaning version.h 1012 # KERNELRELEASE can change from a few different places, meaning version.h
1013 # needs to be updated, so this check is forced on all builds 1013 # needs to be updated, so this check is forced on all builds
1014 1014
1015 uts_len := 64 1015 uts_len := 64
1016 define filechk_utsrelease.h 1016 define filechk_utsrelease.h
1017 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1017 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
1018 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1018 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
1019 exit 1; \ 1019 exit 1; \
1020 fi; \ 1020 fi; \
1021 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1021 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1022 endef 1022 endef
1023 1023
1024 define filechk_version.h 1024 define filechk_version.h
1025 (echo \#define LINUX_VERSION_CODE $(shell \ 1025 (echo \#define LINUX_VERSION_CODE $(shell \
1026 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 1026 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
1027 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1027 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1028 endef 1028 endef
1029 1029
1030 include/linux/version.h: $(srctree)/Makefile FORCE 1030 include/linux/version.h: $(srctree)/Makefile FORCE
1031 $(call filechk,version.h) 1031 $(call filechk,version.h)
1032 1032
1033 include/linux/utsrelease.h: include/config/kernel.release FORCE 1033 include/linux/utsrelease.h: include/config/kernel.release FORCE
1034 $(call filechk,utsrelease.h) 1034 $(call filechk,utsrelease.h)
1035 1035
1036 PHONY += headerdep 1036 PHONY += headerdep
1037 headerdep: 1037 headerdep:
1038 $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl 1038 $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl
1039 1039
1040 # --------------------------------------------------------------------------- 1040 # ---------------------------------------------------------------------------
1041 1041
1042 PHONY += depend dep 1042 PHONY += depend dep
1043 depend dep: 1043 depend dep:
1044 @echo '*** Warning: make $@ is unnecessary now.' 1044 @echo '*** Warning: make $@ is unnecessary now.'
1045 1045
1046 # --------------------------------------------------------------------------- 1046 # ---------------------------------------------------------------------------
1047 # Firmware install 1047 # Firmware install
1048 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1048 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1049 export INSTALL_FW_PATH 1049 export INSTALL_FW_PATH
1050 1050
1051 PHONY += firmware_install 1051 PHONY += firmware_install
1052 firmware_install: FORCE 1052 firmware_install: FORCE
1053 @mkdir -p $(objtree)/firmware 1053 @mkdir -p $(objtree)/firmware
1054 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1054 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1055 1055
1056 # --------------------------------------------------------------------------- 1056 # ---------------------------------------------------------------------------
1057 # Kernel headers 1057 # Kernel headers
1058 1058
1059 #Default location for installed headers 1059 #Default location for installed headers
1060 export INSTALL_HDR_PATH = $(objtree)/usr 1060 export INSTALL_HDR_PATH = $(objtree)/usr
1061 1061
1062 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 1062 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
1063 # Find out where the Kbuild file is located to support 1063 # Find out where the Kbuild file is located to support
1064 # arch/$(ARCH)/include/asm 1064 # arch/$(ARCH)/include/asm
1065 hdr-dir = $(strip \ 1065 hdr-dir = $(strip \
1066 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild), \ 1066 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild), \
1067 arch/$(hdr-arch)/include/asm, include/asm-$(hdr-arch))) 1067 arch/$(hdr-arch)/include/asm, include/asm-$(hdr-arch)))
1068 1068
1069 # If we do an all arch process set dst to asm-$(hdr-arch) 1069 # If we do an all arch process set dst to asm-$(hdr-arch)
1070 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1070 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1071 1071
1072 PHONY += __headers 1072 PHONY += __headers
1073 __headers: include/linux/version.h scripts_basic FORCE 1073 __headers: include/linux/version.h scripts_basic FORCE
1074 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1074 $(Q)$(MAKE) $(build)=scripts scripts/unifdef
1075 1075
1076 PHONY += headers_install_all 1076 PHONY += headers_install_all
1077 headers_install_all: 1077 headers_install_all:
1078 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1078 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1079 1079
1080 PHONY += headers_install 1080 PHONY += headers_install
1081 headers_install: __headers 1081 headers_install: __headers
1082 $(if $(wildcard $(srctree)/$(hdr-dir)/Kbuild),, \ 1082 $(if $(wildcard $(srctree)/$(hdr-dir)/Kbuild),, \
1083 $(error Headers not exportable for the $(SRCARCH) architecture)) 1083 $(error Headers not exportable for the $(SRCARCH) architecture))
1084 $(Q)$(MAKE) $(hdr-inst)=include 1084 $(Q)$(MAKE) $(hdr-inst)=include
1085 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) 1085 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst)
1086 1086
1087 PHONY += headers_check_all 1087 PHONY += headers_check_all
1088 headers_check_all: headers_install_all 1088 headers_check_all: headers_install_all
1089 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1089 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1090 1090
1091 PHONY += headers_check 1091 PHONY += headers_check
1092 headers_check: headers_install 1092 headers_check: headers_install
1093 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 1093 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1
1094 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) HDRCHECK=1 1094 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) HDRCHECK=1
1095 1095
1096 # --------------------------------------------------------------------------- 1096 # ---------------------------------------------------------------------------
1097 # Modules 1097 # Modules
1098 1098
1099 ifdef CONFIG_MODULES 1099 ifdef CONFIG_MODULES
1100 1100
1101 # By default, build modules as well 1101 # By default, build modules as well
1102 1102
1103 all: modules 1103 all: modules
1104 1104
1105 # Build modules 1105 # Build modules
1106 # 1106 #
1107 # A module can be listed more than once in obj-m resulting in 1107 # A module can be listed more than once in obj-m resulting in
1108 # duplicate lines in modules.order files. Those are removed 1108 # duplicate lines in modules.order files. Those are removed
1109 # using awk while concatenating to the final file. 1109 # using awk while concatenating to the final file.
1110 1110
1111 PHONY += modules 1111 PHONY += modules
1112 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) 1112 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
1113 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1113 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1114 @$(kecho) ' Building modules, stage 2.'; 1114 @$(kecho) ' Building modules, stage 2.';
1115 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1115 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1116 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1116 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1117 1117
1118 1118
1119 # Target to prepare building external modules 1119 # Target to prepare building external modules
1120 PHONY += modules_prepare 1120 PHONY += modules_prepare
1121 modules_prepare: prepare scripts 1121 modules_prepare: prepare scripts
1122 1122
1123 # Target to install modules 1123 # Target to install modules
1124 PHONY += modules_install 1124 PHONY += modules_install
1125 modules_install: _modinst_ _modinst_post 1125 modules_install: _modinst_ _modinst_post
1126 1126
1127 PHONY += _modinst_ 1127 PHONY += _modinst_
1128 _modinst_: 1128 _modinst_:
1129 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ 1129 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
1130 echo "Warning: you may need to install module-init-tools"; \ 1130 echo "Warning: you may need to install module-init-tools"; \
1131 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ 1131 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
1132 sleep 1; \ 1132 sleep 1; \
1133 fi 1133 fi
1134 @rm -rf $(MODLIB)/kernel 1134 @rm -rf $(MODLIB)/kernel
1135 @rm -f $(MODLIB)/source 1135 @rm -f $(MODLIB)/source
1136 @mkdir -p $(MODLIB)/kernel 1136 @mkdir -p $(MODLIB)/kernel
1137 @ln -s $(srctree) $(MODLIB)/source 1137 @ln -s $(srctree) $(MODLIB)/source
1138 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1138 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1139 rm -f $(MODLIB)/build ; \ 1139 rm -f $(MODLIB)/build ; \
1140 ln -s $(objtree) $(MODLIB)/build ; \ 1140 ln -s $(objtree) $(MODLIB)/build ; \
1141 fi 1141 fi
1142 @cp -f $(objtree)/modules.order $(MODLIB)/ 1142 @cp -f $(objtree)/modules.order $(MODLIB)/
1143 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1143 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1144 1144
1145 # This depmod is only for convenience to give the initial 1145 # This depmod is only for convenience to give the initial
1146 # boot a modules.dep even before / is mounted read-write. However the 1146 # boot a modules.dep even before / is mounted read-write. However the
1147 # boot script depmod is the master version. 1147 # boot script depmod is the master version.
1148 PHONY += _modinst_post 1148 PHONY += _modinst_post
1149 _modinst_post: _modinst_ 1149 _modinst_post: _modinst_
1150 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1150 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1151 $(call cmd,depmod) 1151 $(call cmd,depmod)
1152 1152
1153 else # CONFIG_MODULES 1153 else # CONFIG_MODULES
1154 1154
1155 # Modules not configured 1155 # Modules not configured
1156 # --------------------------------------------------------------------------- 1156 # ---------------------------------------------------------------------------
1157 1157
1158 modules modules_install: FORCE 1158 modules modules_install: FORCE
1159 @echo 1159 @echo
1160 @echo "The present kernel configuration has modules disabled." 1160 @echo "The present kernel configuration has modules disabled."
1161 @echo "Type 'make config' and enable loadable module support." 1161 @echo "Type 'make config' and enable loadable module support."
1162 @echo "Then build a kernel with module support enabled." 1162 @echo "Then build a kernel with module support enabled."
1163 @echo 1163 @echo
1164 @exit 1 1164 @exit 1
1165 1165
1166 endif # CONFIG_MODULES 1166 endif # CONFIG_MODULES
1167 1167
1168 ### 1168 ###
1169 # Cleaning is done on three levels. 1169 # Cleaning is done on three levels.
1170 # make clean Delete most generated files 1170 # make clean Delete most generated files
1171 # Leave enough to build external modules 1171 # Leave enough to build external modules
1172 # make mrproper Delete the current configuration, and all generated files 1172 # make mrproper Delete the current configuration, and all generated files
1173 # make distclean Remove editor backup files, patch leftover files and the like 1173 # make distclean Remove editor backup files, patch leftover files and the like
1174 1174
1175 # Directories & files removed with 'make clean' 1175 # Directories & files removed with 'make clean'
1176 CLEAN_DIRS += $(MODVERDIR) 1176 CLEAN_DIRS += $(MODVERDIR)
1177 CLEAN_FILES += vmlinux System.map \ 1177 CLEAN_FILES += vmlinux System.map \
1178 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 1178 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
1179 1179
1180 # Directories & files removed with 'make mrproper' 1180 # Directories & files removed with 'make mrproper'
1181 MRPROPER_DIRS += include/config include2 usr/include 1181 MRPROPER_DIRS += include/config include2 usr/include
1182 MRPROPER_FILES += .config .config.old include/asm .version .old_version \ 1182 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
1183 include/linux/autoconf.h include/linux/version.h \ 1183 include/linux/autoconf.h include/linux/version.h \
1184 include/linux/utsrelease.h \ 1184 include/linux/utsrelease.h \
1185 include/linux/bounds.h include/asm*/asm-offsets.h \ 1185 include/linux/bounds.h include/asm*/asm-offsets.h \
1186 Module.symvers Module.markers tags TAGS cscope* 1186 Module.symvers Module.markers tags TAGS cscope*
1187 1187
1188 # clean - Delete most, but leave enough to build external modules 1188 # clean - Delete most, but leave enough to build external modules
1189 # 1189 #
1190 clean: rm-dirs := $(CLEAN_DIRS) 1190 clean: rm-dirs := $(CLEAN_DIRS)
1191 clean: rm-files := $(CLEAN_FILES) 1191 clean: rm-files := $(CLEAN_FILES)
1192 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation) 1192 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation)
1193 1193
1194 PHONY += $(clean-dirs) clean archclean 1194 PHONY += $(clean-dirs) clean archclean
1195 $(clean-dirs): 1195 $(clean-dirs):
1196 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1196 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1197 1197
1198 clean: archclean $(clean-dirs) 1198 clean: archclean $(clean-dirs)
1199 $(call cmd,rmdirs) 1199 $(call cmd,rmdirs)
1200 $(call cmd,rmfiles) 1200 $(call cmd,rmfiles)
1201 @find . $(RCS_FIND_IGNORE) \ 1201 @find . $(RCS_FIND_IGNORE) \
1202 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1202 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1203 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1203 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1204 -o -name '*.symtypes' -o -name 'modules.order' \ 1204 -o -name '*.symtypes' -o -name 'modules.order' \
1205 -o -name 'Module.markers' -o -name '.tmp_*.o.*' \) \ 1205 -o -name 'Module.markers' -o -name '.tmp_*.o.*' \) \
1206 -type f -print | xargs rm -f 1206 -type f -print | xargs rm -f
1207 1207
1208 # mrproper - Delete all generated files, including .config 1208 # mrproper - Delete all generated files, including .config
1209 # 1209 #
1210 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1210 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1211 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1211 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1212 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1212 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1213 1213
1214 PHONY += $(mrproper-dirs) mrproper archmrproper 1214 PHONY += $(mrproper-dirs) mrproper archmrproper
1215 $(mrproper-dirs): 1215 $(mrproper-dirs):
1216 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1216 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1217 1217
1218 mrproper: clean archmrproper $(mrproper-dirs) 1218 mrproper: clean archmrproper $(mrproper-dirs)
1219 $(call cmd,rmdirs) 1219 $(call cmd,rmdirs)
1220 $(call cmd,rmfiles) 1220 $(call cmd,rmfiles)
1221 1221
1222 # distclean 1222 # distclean
1223 # 1223 #
1224 PHONY += distclean 1224 PHONY += distclean
1225 1225
1226 distclean: mrproper 1226 distclean: mrproper
1227 @find $(srctree) $(RCS_FIND_IGNORE) \ 1227 @find $(srctree) $(RCS_FIND_IGNORE) \
1228 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1228 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1229 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1229 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1230 -o -name '.*.rej' -o -size 0 \ 1230 -o -name '.*.rej' -o -size 0 \
1231 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 1231 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1232 -type f -print | xargs rm -f 1232 -type f -print | xargs rm -f
1233 1233
1234 1234
1235 # Packaging of the kernel to various formats 1235 # Packaging of the kernel to various formats
1236 # --------------------------------------------------------------------------- 1236 # ---------------------------------------------------------------------------
1237 # rpm target kept for backward compatibility 1237 # rpm target kept for backward compatibility
1238 package-dir := $(srctree)/scripts/package 1238 package-dir := $(srctree)/scripts/package
1239 1239
1240 %pkg: include/config/kernel.release FORCE 1240 %pkg: include/config/kernel.release FORCE
1241 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1241 $(Q)$(MAKE) $(build)=$(package-dir) $@
1242 rpm: include/config/kernel.release FORCE 1242 rpm: include/config/kernel.release FORCE
1243 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1243 $(Q)$(MAKE) $(build)=$(package-dir) $@
1244 1244
1245 1245
1246 # Brief documentation of the typical targets used 1246 # Brief documentation of the typical targets used
1247 # --------------------------------------------------------------------------- 1247 # ---------------------------------------------------------------------------
1248 1248
1249 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1249 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1250 boards := $(notdir $(boards)) 1250 boards := $(notdir $(boards))
1251 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1251 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1252 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1252 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1253 1253
1254 help: 1254 help:
1255 @echo 'Cleaning targets:' 1255 @echo 'Cleaning targets:'
1256 @echo ' clean - Remove most generated files but keep the config and' 1256 @echo ' clean - Remove most generated files but keep the config and'
1257 @echo ' enough build support to build external modules' 1257 @echo ' enough build support to build external modules'
1258 @echo ' mrproper - Remove all generated files + config + various backup files' 1258 @echo ' mrproper - Remove all generated files + config + various backup files'
1259 @echo ' distclean - mrproper + remove editor backup and patch files' 1259 @echo ' distclean - mrproper + remove editor backup and patch files'
1260 @echo '' 1260 @echo ''
1261 @echo 'Configuration targets:' 1261 @echo 'Configuration targets:'
1262 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1262 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1263 @echo '' 1263 @echo ''
1264 @echo 'Other generic targets:' 1264 @echo 'Other generic targets:'
1265 @echo ' all - Build all targets marked with [*]' 1265 @echo ' all - Build all targets marked with [*]'
1266 @echo '* vmlinux - Build the bare kernel' 1266 @echo '* vmlinux - Build the bare kernel'
1267 @echo '* modules - Build all modules' 1267 @echo '* modules - Build all modules'
1268 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1268 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1269 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1269 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1270 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1270 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1271 @echo ' dir/ - Build all files in dir and below' 1271 @echo ' dir/ - Build all files in dir and below'
1272 @echo ' dir/file.[ois] - Build specified target only' 1272 @echo ' dir/file.[ois] - Build specified target only'
1273 @echo ' dir/file.ko - Build module including final link' 1273 @echo ' dir/file.ko - Build module including final link'
1274 @echo ' prepare - Set up for building external modules' 1274 @echo ' prepare - Set up for building external modules'
1275 @echo ' tags/TAGS - Generate tags file for editors' 1275 @echo ' tags/TAGS - Generate tags file for editors'
1276 @echo ' cscope - Generate cscope index' 1276 @echo ' cscope - Generate cscope index'
1277 @echo ' kernelrelease - Output the release version string' 1277 @echo ' kernelrelease - Output the release version string'
1278 @echo ' kernelversion - Output the version stored in Makefile' 1278 @echo ' kernelversion - Output the version stored in Makefile'
1279 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1279 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1280 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1280 echo ' (default: $(INSTALL_HDR_PATH))'; \
1281 echo '' 1281 echo ''
1282 @echo 'Static analysers' 1282 @echo 'Static analysers'
1283 @echo ' checkstack - Generate a list of stack hogs' 1283 @echo ' checkstack - Generate a list of stack hogs'
1284 @echo ' namespacecheck - Name space analysis on compiled kernel' 1284 @echo ' namespacecheck - Name space analysis on compiled kernel'
1285 @echo ' versioncheck - Sanity check on version.h usage' 1285 @echo ' versioncheck - Sanity check on version.h usage'
1286 @echo ' includecheck - Check for duplicate included header files' 1286 @echo ' includecheck - Check for duplicate included header files'
1287 @echo ' export_report - List the usages of all exported symbols' 1287 @echo ' export_report - List the usages of all exported symbols'
1288 @echo ' headers_check - Sanity check on exported headers' 1288 @echo ' headers_check - Sanity check on exported headers'
1289 @echo ' headerdep - Detect inclusion cycles in headers'; \ 1289 @echo ' headerdep - Detect inclusion cycles in headers'; \
1290 echo '' 1290 echo ''
1291 @echo 'Kernel packaging:' 1291 @echo 'Kernel packaging:'
1292 @$(MAKE) $(build)=$(package-dir) help 1292 @$(MAKE) $(build)=$(package-dir) help
1293 @echo '' 1293 @echo ''
1294 @echo 'Documentation targets:' 1294 @echo 'Documentation targets:'
1295 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1295 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1296 @echo '' 1296 @echo ''
1297 @echo 'Architecture specific targets ($(SRCARCH)):' 1297 @echo 'Architecture specific targets ($(SRCARCH)):'
1298 @$(if $(archhelp),$(archhelp),\ 1298 @$(if $(archhelp),$(archhelp),\
1299 echo ' No architecture specific help defined for $(SRCARCH)') 1299 echo ' No architecture specific help defined for $(SRCARCH)')
1300 @echo '' 1300 @echo ''
1301 @$(if $(boards), \ 1301 @$(if $(boards), \
1302 $(foreach b, $(boards), \ 1302 $(foreach b, $(boards), \
1303 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1303 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1304 echo '') 1304 echo '')
1305 @$(if $(board-dirs), \ 1305 @$(if $(board-dirs), \
1306 $(foreach b, $(board-dirs), \ 1306 $(foreach b, $(board-dirs), \
1307 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1307 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1308 printf " %-16s - Show all of the above\\n" help-boards; \ 1308 printf " %-16s - Show all of the above\\n" help-boards; \
1309 echo '') 1309 echo '')
1310 1310
1311 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1311 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1312 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1312 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1313 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1313 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1314 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1314 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1315 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1315 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1316 @echo '' 1316 @echo ''
1317 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1317 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1318 @echo 'For further info see the ./README file' 1318 @echo 'For further info see the ./README file'
1319 1319
1320 1320
1321 help-board-dirs := $(addprefix help-,$(board-dirs)) 1321 help-board-dirs := $(addprefix help-,$(board-dirs))
1322 1322
1323 help-boards: $(help-board-dirs) 1323 help-boards: $(help-board-dirs)
1324 1324
1325 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) 1325 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1326 1326
1327 $(help-board-dirs): help-%: 1327 $(help-board-dirs): help-%:
1328 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1328 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1329 @$(if $(boards-per-dir), \ 1329 @$(if $(boards-per-dir), \
1330 $(foreach b, $(boards-per-dir), \ 1330 $(foreach b, $(boards-per-dir), \
1331 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1331 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1332 echo '') 1332 echo '')
1333 1333
1334 1334
1335 # Documentation targets 1335 # Documentation targets
1336 # --------------------------------------------------------------------------- 1336 # ---------------------------------------------------------------------------
1337 %docs: scripts_basic FORCE 1337 %docs: scripts_basic FORCE
1338 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1338 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1339 1339
1340 else # KBUILD_EXTMOD 1340 else # KBUILD_EXTMOD
1341 1341
1342 ### 1342 ###
1343 # External module support. 1343 # External module support.
1344 # When building external modules the kernel used as basis is considered 1344 # When building external modules the kernel used as basis is considered
1345 # read-only, and no consistency checks are made and the make 1345 # read-only, and no consistency checks are made and the make
1346 # system is not used on the basis kernel. If updates are required 1346 # system is not used on the basis kernel. If updates are required
1347 # in the basis kernel ordinary make commands (without M=...) must 1347 # in the basis kernel ordinary make commands (without M=...) must
1348 # be used. 1348 # be used.
1349 # 1349 #
1350 # The following are the only valid targets when building external 1350 # The following are the only valid targets when building external
1351 # modules. 1351 # modules.
1352 # make M=dir clean Delete all automatically generated files 1352 # make M=dir clean Delete all automatically generated files
1353 # make M=dir modules Make all modules in specified dir 1353 # make M=dir modules Make all modules in specified dir
1354 # make M=dir Same as 'make M=dir modules' 1354 # make M=dir Same as 'make M=dir modules'
1355 # make M=dir modules_install 1355 # make M=dir modules_install
1356 # Install the modules built in the module directory 1356 # Install the modules built in the module directory
1357 # Assumes install directory is already created 1357 # Assumes install directory is already created
1358 1358
1359 # We are always building modules 1359 # We are always building modules
1360 KBUILD_MODULES := 1 1360 KBUILD_MODULES := 1
1361 PHONY += crmodverdir 1361 PHONY += crmodverdir
1362 crmodverdir: 1362 crmodverdir:
1363 $(cmd_crmodverdir) 1363 $(cmd_crmodverdir)
1364 1364
1365 PHONY += $(objtree)/Module.symvers 1365 PHONY += $(objtree)/Module.symvers
1366 $(objtree)/Module.symvers: 1366 $(objtree)/Module.symvers:
1367 @test -e $(objtree)/Module.symvers || ( \ 1367 @test -e $(objtree)/Module.symvers || ( \
1368 echo; \ 1368 echo; \
1369 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1369 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1370 echo " is missing; modules will have no dependencies and modversions."; \ 1370 echo " is missing; modules will have no dependencies and modversions."; \
1371 echo ) 1371 echo )
1372 1372
1373 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1373 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1374 PHONY += $(module-dirs) modules 1374 PHONY += $(module-dirs) modules
1375 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1375 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1376 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1376 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1377 1377
1378 modules: $(module-dirs) 1378 modules: $(module-dirs)
1379 @$(kecho) ' Building modules, stage 2.'; 1379 @$(kecho) ' Building modules, stage 2.';
1380 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1380 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1381 1381
1382 PHONY += modules_install 1382 PHONY += modules_install
1383 modules_install: _emodinst_ _emodinst_post 1383 modules_install: _emodinst_ _emodinst_post
1384 1384
1385 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1385 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1386 PHONY += _emodinst_ 1386 PHONY += _emodinst_
1387 _emodinst_: 1387 _emodinst_:
1388 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1388 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1389 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1389 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1390 1390
1391 PHONY += _emodinst_post 1391 PHONY += _emodinst_post
1392 _emodinst_post: _emodinst_ 1392 _emodinst_post: _emodinst_
1393 $(call cmd,depmod) 1393 $(call cmd,depmod)
1394 1394
1395 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1395 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1396 1396
1397 PHONY += $(clean-dirs) clean 1397 PHONY += $(clean-dirs) clean
1398 $(clean-dirs): 1398 $(clean-dirs):
1399 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1399 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1400 1400
1401 clean: rm-dirs := $(MODVERDIR) 1401 clean: rm-dirs := $(MODVERDIR)
1402 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1402 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1403 clean: $(clean-dirs) 1403 clean: $(clean-dirs)
1404 $(call cmd,rmdirs) 1404 $(call cmd,rmdirs)
1405 $(call cmd,rmfiles) 1405 $(call cmd,rmfiles)
1406 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ 1406 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1407 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1407 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1408 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ 1408 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1409 -type f -print | xargs rm -f 1409 -type f -print | xargs rm -f
1410 1410
1411 help: 1411 help:
1412 @echo ' Building external modules.' 1412 @echo ' Building external modules.'
1413 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1413 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1414 @echo '' 1414 @echo ''
1415 @echo ' modules - default target, build the module(s)' 1415 @echo ' modules - default target, build the module(s)'
1416 @echo ' modules_install - install the module' 1416 @echo ' modules_install - install the module'
1417 @echo ' clean - remove generated files in module directory only' 1417 @echo ' clean - remove generated files in module directory only'
1418 @echo '' 1418 @echo ''
1419 1419
1420 # Dummies... 1420 # Dummies...
1421 PHONY += prepare scripts 1421 PHONY += prepare scripts
1422 prepare: ; 1422 prepare: ;
1423 scripts: ; 1423 scripts: ;
1424 endif # KBUILD_EXTMOD 1424 endif # KBUILD_EXTMOD
1425 1425
1426 # Generate tags for editors 1426 # Generate tags for editors
1427 # --------------------------------------------------------------------------- 1427 # ---------------------------------------------------------------------------
1428 quiet_cmd_tags = GEN $@ 1428 quiet_cmd_tags = GEN $@
1429 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1429 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1430 1430
1431 tags TAGS cscope: FORCE 1431 tags TAGS cscope: FORCE
1432 $(call cmd,tags) 1432 $(call cmd,tags)
1433 1433
1434 # Scripts to check various things for consistency 1434 # Scripts to check various things for consistency
1435 # --------------------------------------------------------------------------- 1435 # ---------------------------------------------------------------------------
1436 1436
1437 includecheck: 1437 includecheck:
1438 find * $(RCS_FIND_IGNORE) \ 1438 find * $(RCS_FIND_IGNORE) \
1439 -name '*.[hcS]' -type f -print | sort \ 1439 -name '*.[hcS]' -type f -print | sort \
1440 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1440 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1441 1441
1442 versioncheck: 1442 versioncheck:
1443 find * $(RCS_FIND_IGNORE) \ 1443 find * $(RCS_FIND_IGNORE) \
1444 -name '*.[hcS]' -type f -print | sort \ 1444 -name '*.[hcS]' -type f -print | sort \
1445 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1445 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1446 1446
1447 namespacecheck: 1447 namespacecheck:
1448 $(PERL) $(srctree)/scripts/namespace.pl 1448 $(PERL) $(srctree)/scripts/namespace.pl
1449 1449
1450 export_report: 1450 export_report:
1451 $(PERL) $(srctree)/scripts/export_report.pl 1451 $(PERL) $(srctree)/scripts/export_report.pl
1452 1452
1453 endif #ifeq ($(config-targets),1) 1453 endif #ifeq ($(config-targets),1)
1454 endif #ifeq ($(mixed-targets),1) 1454 endif #ifeq ($(mixed-targets),1)
1455 1455
1456 PHONY += checkstack kernelrelease kernelversion 1456 PHONY += checkstack kernelrelease kernelversion
1457 1457
1458 # UML needs a little special treatment here. It wants to use the host 1458 # UML needs a little special treatment here. It wants to use the host
1459 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1459 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1460 # else wants $(ARCH), including people doing cross-builds, which means 1460 # else wants $(ARCH), including people doing cross-builds, which means
1461 # that $(SUBARCH) doesn't work here. 1461 # that $(SUBARCH) doesn't work here.
1462 ifeq ($(ARCH), um) 1462 ifeq ($(ARCH), um)
1463 CHECKSTACK_ARCH := $(SUBARCH) 1463 CHECKSTACK_ARCH := $(SUBARCH)
1464 else 1464 else
1465 CHECKSTACK_ARCH := $(ARCH) 1465 CHECKSTACK_ARCH := $(ARCH)
1466 endif 1466 endif
1467 checkstack: 1467 checkstack:
1468 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1468 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1469 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1469 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1470 1470
1471 kernelrelease: 1471 kernelrelease:
1472 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ 1472 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
1473 $(error kernelrelease not valid - run 'make prepare' to update it)) 1473 $(error kernelrelease not valid - run 'make prepare' to update it))
1474 kernelversion: 1474 kernelversion:
1475 @echo $(KERNELVERSION) 1475 @echo $(KERNELVERSION)
1476 1476
1477 # Single targets 1477 # Single targets
1478 # --------------------------------------------------------------------------- 1478 # ---------------------------------------------------------------------------
1479 # Single targets are compatible with: 1479 # Single targets are compatible with:
1480 # - build with mixed source and output 1480 # - build with mixed source and output
1481 # - build with separate output dir 'make O=...' 1481 # - build with separate output dir 'make O=...'
1482 # - external modules 1482 # - external modules
1483 # 1483 #
1484 # target-dir => where to store outputfile 1484 # target-dir => where to store outputfile
1485 # build-dir => directory in kernel source tree to use 1485 # build-dir => directory in kernel source tree to use
1486 1486
1487 ifeq ($(KBUILD_EXTMOD),) 1487 ifeq ($(KBUILD_EXTMOD),)
1488 build-dir = $(patsubst %/,%,$(dir $@)) 1488 build-dir = $(patsubst %/,%,$(dir $@))
1489 target-dir = $(dir $@) 1489 target-dir = $(dir $@)
1490 else 1490 else
1491 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1491 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1492 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1492 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1493 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1493 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1494 endif 1494 endif
1495 1495
1496 %.s: %.c prepare scripts FORCE 1496 %.s: %.c prepare scripts FORCE
1497 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1497 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1498 %.i: %.c prepare scripts FORCE 1498 %.i: %.c prepare scripts FORCE
1499 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1499 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1500 %.o: %.c prepare scripts FORCE 1500 %.o: %.c prepare scripts FORCE
1501 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1501 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1502 %.lst: %.c prepare scripts FORCE 1502 %.lst: %.c prepare scripts FORCE
1503 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1503 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1504 %.s: %.S prepare scripts FORCE 1504 %.s: %.S prepare scripts FORCE
1505 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1505 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1506 %.o: %.S prepare scripts FORCE 1506 %.o: %.S prepare scripts FORCE
1507 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1507 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1508 %.symtypes: %.c prepare scripts FORCE 1508 %.symtypes: %.c prepare scripts FORCE
1509 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1509 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1510 1510
1511 # Modules 1511 # Modules
1512 /: prepare scripts FORCE 1512 /: prepare scripts FORCE
1513 $(cmd_crmodverdir) 1513 $(cmd_crmodverdir)
1514 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1514 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1515 $(build)=$(build-dir) 1515 $(build)=$(build-dir)
1516 %/: prepare scripts FORCE 1516 %/: prepare scripts FORCE
1517 $(cmd_crmodverdir) 1517 $(cmd_crmodverdir)
1518 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1518 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1519 $(build)=$(build-dir) 1519 $(build)=$(build-dir)
1520 %.ko: prepare scripts FORCE 1520 %.ko: prepare scripts FORCE
1521 $(cmd_crmodverdir) 1521 $(cmd_crmodverdir)
1522 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1522 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1523 $(build)=$(build-dir) $(@:.ko=.o) 1523 $(build)=$(build-dir) $(@:.ko=.o)
1524 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1524 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1525 1525
1526 # FIXME Should go into a make.lib or something 1526 # FIXME Should go into a make.lib or something
1527 # =========================================================================== 1527 # ===========================================================================
1528 1528
1529 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1529 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1530 cmd_rmdirs = rm -rf $(rm-dirs) 1530 cmd_rmdirs = rm -rf $(rm-dirs)
1531 1531
1532 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1532 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1533 cmd_rmfiles = rm -f $(rm-files) 1533 cmd_rmfiles = rm -f $(rm-files)
1534 1534
1535 # Run depmod only if we have System.map and depmod is executable 1535 # Run depmod only if we have System.map and depmod is executable
1536 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1536 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1537 cmd_depmod = \ 1537 cmd_depmod = \
1538 if [ -r System.map -a -x $(DEPMOD) ]; then \ 1538 if [ -r System.map -a -x $(DEPMOD) ]; then \
1539 $(DEPMOD) -ae -F System.map \ 1539 $(DEPMOD) -ae -F System.map \
1540 $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) -r) \ 1540 $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) -r) \
1541 $(KERNELRELEASE); \ 1541 $(KERNELRELEASE); \
1542 fi 1542 fi
1543 1543
1544 # Create temporary dir for module support files 1544 # Create temporary dir for module support files
1545 # clean it up only when building all modules 1545 # clean it up only when building all modules
1546 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1546 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1547 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1547 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1548 1548
1549 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ 1549 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
1550 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ 1550 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \
1551 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) 1551 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1552 1552
1553 quiet_cmd_as_o_S = AS $@ 1553 quiet_cmd_as_o_S = AS $@
1554 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 1554 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1555 1555
1556 # read all saved command lines 1556 # read all saved command lines
1557 1557
1558 targets := $(wildcard $(sort $(targets))) 1558 targets := $(wildcard $(sort $(targets)))
1559 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1559 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1560 1560
1561 ifneq ($(cmd_files),) 1561 ifneq ($(cmd_files),)
1562 $(cmd_files): ; # Do not try to update included dependency files 1562 $(cmd_files): ; # Do not try to update included dependency files
1563 include $(cmd_files) 1563 include $(cmd_files)
1564 endif 1564 endif
1565 1565
1566 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1566 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1567 # Usage: 1567 # Usage:
1568 # $(Q)$(MAKE) $(clean)=dir 1568 # $(Q)$(MAKE) $(clean)=dir
1569 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 1569 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1570 1570
1571 endif # skip-makefile 1571 endif # skip-makefile
1572 1572
1573 PHONY += FORCE 1573 PHONY += FORCE
1574 FORCE: 1574 FORCE:
1575 1575
1576 # Declare the contents of the .PHONY variable as phony. We keep that 1576 # Declare the contents of the .PHONY variable as phony. We keep that
1577 # information in a variable se we can use it in if_changed and friends. 1577 # information in a variable se we can use it in if_changed and friends.
1578 .PHONY: $(PHONY) 1578 .PHONY: $(PHONY)