Blame view

Makefile 52.3 KB
55922c9d1   Linus Torvalds   Linux 3.0-rc1
1
  VERSION = 3
322a8b034   Linus Torvalds   Linux 3.1-rc1
2
  PATCHLEVEL = 1
55922c9d1   Linus Torvalds   Linux 3.0-rc1
3
  SUBLEVEL = 0
b6fd41e29   Linus Torvalds   Linux 3.1-rc6
4
  EXTRAVERSION = -rc6
fcb8ce5cf   Linus Torvalds   Linux 3.1-rc3
5
  NAME = "Divemaster Edition"
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
6
7
8
9
10
11
  
  # *DOCUMENTATION*
  # To see a list of typical targets execute "make help"
  # More info can be located in ./README
  # Comments in this file are targeted only to the developer, do not
  # expect to learn how to build the kernel reading this file.
15964864c   Oleg Verych   [PATCH] kbuild: f...
12
13
  # Do not:
  # o  use make's built-in rules and variables
d384e35a2   Linus Nilsson   Makefile: Change ...
14
  #    (this increases performance and avoids hard-to-debug behaviour);
15964864c   Oleg Verych   [PATCH] kbuild: f...
15
16
  # o  print "Entering directory ...";
  MAKEFLAGS += -rR --no-print-directory
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
17

c051346b7   H. Peter Anvin   Makefile: set LC_...
18
  # Avoid funny character set dependencies
06b5dc646   H. Peter Anvin   Makefile: Unexpor...
19
  unexport LC_ALL
c051346b7   H. Peter Anvin   Makefile: set LC_...
20
21
  LC_COLLATE=C
  LC_NUMERIC=C
07105202b   Michal Marek   Makefile: do not ...
22
  export LC_COLLATE LC_NUMERIC
c051346b7   H. Peter Anvin   Makefile: set LC_...
23

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
  # We are using a recursive build, so we need to do a little thinking
  # to get the ordering right.
  #
  # Most importantly: sub-Makefiles should only ever modify files in
  # their own directory. If in some directory we have a dependency on
  # a file in another dir (which doesn't happen often, but it's often
  # unavoidable when linking the built-in.o targets which finally
  # turn into vmlinux), we will call a sub make in that other dir, and
  # after that we are sure that everything which is in that other dir
  # is now up to date.
  #
  # The only cases where we need to modify files which have global
  # effects are thus separated out and done before the recursive
  # descending is started. They are now explicitly listed as the
  # prepare rule.
  
  # To put more focus on warnings, be less verbose as default
  # Use 'make V=1' to see the full commands
b8b0618cf   Cheng Renquan   kbuild: remove ex...
42
43
  ifeq ("$(origin V)", "command line")
    KBUILD_VERBOSE = $(V)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
44
45
46
47
  endif
  ifndef KBUILD_VERBOSE
    KBUILD_VERBOSE = 0
  endif
1c7bafe72   Robert P. J. Day   kbuild: clarify "...
48
49
50
51
52
53
54
55
56
  # Call a source code checker (by default, "sparse") as part of the
  # C compilation.
  #
  # Use 'make C=1' to enable checking of only re-compiled files.
  # Use 'make C=2' to enable checking of *all* source files, regardless
  # of whether they are re-compiled or not.
  #
  # See the file "Documentation/sparse.txt" for more details, including
  # where to get the "sparse" utility.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
57

b8b0618cf   Cheng Renquan   kbuild: remove ex...
58
59
  ifeq ("$(origin C)", "command line")
    KBUILD_CHECKSRC = $(C)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
60
61
62
63
64
65
66
67
68
69
70
  endif
  ifndef KBUILD_CHECKSRC
    KBUILD_CHECKSRC = 0
  endif
  
  # Use make M=dir to specify directory of external module to build
  # Old syntax make ... SUBDIRS=$PWD is still supported
  # Setting the environment variable KBUILD_EXTMOD take precedence
  ifdef SUBDIRS
    KBUILD_EXTMOD ?= $(SUBDIRS)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
71

b8b0618cf   Cheng Renquan   kbuild: remove ex...
72
73
74
  ifeq ("$(origin M)", "command line")
    KBUILD_EXTMOD := $(M)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
75
76
77
78
79
80
  
  # kbuild supports saving output files in a separate directory.
  # To locate output files in a separate directory two syntaxes are supported.
  # In both cases the working directory must be the root of the kernel src.
  # 1) O=
  # Use "make O=dir/to/store/output/files/"
070b98bfd   Sam Ravnborg   kbuild: trivial f...
81
  #
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
  # 2) Set KBUILD_OUTPUT
  # Set the environment variable KBUILD_OUTPUT to point to the directory
  # where the output files shall be placed.
  # export KBUILD_OUTPUT=dir/to/store/output/files/
  # make
  #
  # The O= assignment takes precedence over the KBUILD_OUTPUT environment
  # variable.
  
  
  # KBUILD_SRC is set on invocation of make in OBJ directory
  # KBUILD_SRC is not intended to be used by the regular user (for now)
  ifeq ($(KBUILD_SRC),)
  
  # OK, Make called in directory where kernel src resides
  # Do we want to locate output files in a separate directory?
b8b0618cf   Cheng Renquan   kbuild: remove ex...
98
99
  ifeq ("$(origin O)", "command line")
    KBUILD_OUTPUT := $(O)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
100
  endif
4a5838ad9   Borislav Petkov   kbuild: Add extra...
101
  ifeq ("$(origin W)", "command line")
28bc20dcc   Sam Ravnborg   kbuild: implement...
102
    export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
4a5838ad9   Borislav Petkov   kbuild: Add extra...
103
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
104
  # That's our default target when none is given on the command line
4f1933620   Paul Smith   kbuild: change kb...
105
  PHONY := _all
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
106
  _all:
1cacc9ab8   Sam Ravnborg   kbuild: fix build...
107
108
  # Cancel implicit rules on top Makefile
  $(CURDIR)/Makefile Makefile: ;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
109
110
111
112
113
114
115
  ifneq ($(KBUILD_OUTPUT),)
  # Invoke a second make in the output directory, passing relevant variables
  # check that the output directory actually exists
  saved-output := $(KBUILD_OUTPUT)
  KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
  $(if $(KBUILD_OUTPUT),, \
       $(error output directory "$(saved-output)" does not exist))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
116

0b35786d7   Milton Miller   kbuild: call make...
117
  PHONY += $(MAKECMDGOALS) sub-make
1cacc9ab8   Sam Ravnborg   kbuild: fix build...
118
  $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
0b35786d7   Milton Miller   kbuild: call make...
119
120
121
  	$(Q)@:
  
  sub-make: FORCE
23a45e2c0   Sam Ravnborg   kbuild: pass less...
122
123
  	$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
  	KBUILD_SRC=$(CURDIR) \
0b35786d7   Milton Miller   kbuild: call make...
124
125
  	KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
  	$(filter-out _all sub-make,$(MAKECMDGOALS))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
126
127
128
129
130
131
132
133
134
135
136
  
  # Leave processing to above invocation of make
  skip-makefile := 1
  endif # ifneq ($(KBUILD_OUTPUT),)
  endif # ifeq ($(KBUILD_SRC),)
  
  # We process the rest of the Makefile if this is the final invocation of make
  ifeq ($(skip-makefile),)
  
  # If building an external module we do not care about the all: rule
  # but instead _all depend on modules
4f1933620   Paul Smith   kbuild: change kb...
137
  PHONY += all
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
138
139
140
141
142
143
144
  ifeq ($(KBUILD_EXTMOD),)
  _all: all
  else
  _all: modules
  endif
  
  srctree		:= $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
145
146
147
  objtree		:= $(CURDIR)
  src		:= $(srctree)
  obj		:= $(objtree)
0f558c333   Mattia Dongili   kbuild: fix a csc...
148
  VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
149

112942353   Amerigo Wang   kbuild: finally r...
150
  export srctree objtree VPATH
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
151

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
152
153
154
155
156
157
158
159
160
  
  # SUBARCH tells the usermode build what the underlying arch is.  That is set
  # first, and if a usermode build is happening, the "ARCH=um" on the command
  # line overrides the setting of ARCH below.  If a native build is happening,
  # then ARCH is assigned, getting whatever value it gets normally, and 
  # SUBARCH is subsequently ignored.
  
  SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
  				  -e s/arm.*/arm/ -e s/sa110/arm/ \
39990b5eb   Linus Torvalds   ppc64: default bu...
161
  				  -e s/s390x/s390/ -e s/parisc64/parisc/ \
236b19574   Paul Mundt   sh: Correct SUBAR...
162
  				  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
3cc000b58   Paul Mundt   sh: Plug in suppo...
163
  				  -e s/sh[234].*/sh/ )
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
  
  # Cross compiling and selecting different set of gcc/bin-utils
  # ---------------------------------------------------------------------------
  #
  # When performing cross compilation for other architectures ARCH shall be set
  # to the target architecture. (See arch/* for the possibilities).
  # ARCH can be set during invocation of make:
  # make ARCH=ia64
  # Another way is to have ARCH set in the environment.
  # The default ARCH is the host where make is executed.
  
  # CROSS_COMPILE specify the prefix used for all executables used
  # during compilation. Only gcc and related bin-utils executables
  # are prefixed with $(CROSS_COMPILE).
  # CROSS_COMPILE can be set on the command line
  # make CROSS_COMPILE=ia64-linux-
  # Alternatively CROSS_COMPILE can be set in the environment.
843364660   Roland McGrath   kconfig CROSS_COM...
181
182
  # A third alternative is to store a setting in .config so that plain
  # "make" in the configured kernel build directory always uses that.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
183
184
  # Default value for CROSS_COMPILE is not to prefix executables
  # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
4ce6efed4   Sam Ravnborg   kbuild: soften mo...
185
  export KBUILD_BUILDHOST := $(SUBARCH)
2331d1a6c   Sam Ravnborg   kbuild: revert "s...
186
  ARCH		?= $(SUBARCH)
843364660   Roland McGrath   kconfig CROSS_COM...
187
  CROSS_COMPILE	?= $(CONFIG_CROSS_COMPILE:"%"=%)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
188
189
  
  # Architecture as present in compile.h
6752ed90d   Thomas Gleixner   Kbuild: allow arc...
190
191
  UTS_MACHINE 	:= $(ARCH)
  SRCARCH 	:= $(ARCH)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
192

d746d647f   Sam Ravnborg   x86: do not use $...
193
194
195
196
197
198
199
  # Additional ARCH settings for x86
  ifeq ($(ARCH),i386)
          SRCARCH := x86
  endif
  ifeq ($(ARCH),x86_64)
          SRCARCH := x86
  endif
74b469f2e   Sam Ravnborg   x86: move i386 an...
200

5e5387900   Sam Ravnborg   sparc,sparc64: un...
201
  # Additional ARCH settings for sparc
e69f58c03   Namhyung Kim   kbuild: add ARCH=...
202
203
204
  ifeq ($(ARCH),sparc32)
         SRCARCH := sparc
  endif
a439fe51a   Sam Ravnborg   sparc, sparc64: u...
205
  ifeq ($(ARCH),sparc64)
5e5387900   Sam Ravnborg   sparc,sparc64: un...
206
         SRCARCH := sparc
a439fe51a   Sam Ravnborg   sparc, sparc64: u...
207
  endif
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
208

3cc000b58   Paul Mundt   sh: Plug in suppo...
209
210
211
212
  # Additional ARCH settings for sh
  ifeq ($(ARCH),sh64)
         SRCARCH := sh
  endif
18aecc2b6   Chris Metcalf   arch/tile: finish...
213
  # Additional ARCH settings for tile
6738d3210   Chris Metcalf   arch/tile: prefer...
214
215
216
  ifeq ($(ARCH),tilepro)
         SRCARCH := tile
  endif
18aecc2b6   Chris Metcalf   arch/tile: finish...
217
218
219
  ifeq ($(ARCH),tilegx)
         SRCARCH := tile
  endif
5e5387900   Sam Ravnborg   sparc,sparc64: un...
220
221
  # Where to locate arch specific headers
  hdr-arch  := $(SRCARCH)
49148020b   Sam Ravnborg   m68k,m68knommu: m...
222
223
224
  ifeq ($(ARCH),m68knommu)
         hdr-arch  := m68k
  endif
14cdd3c40   Roman Zippel   kconfig: KCONFIG_...
225
  KCONFIG_CONFIG	?= .config
41263fc67   Ben Gardiner   kbuild: fix inter...
226
  export KCONFIG_CONFIG
14cdd3c40   Roman Zippel   kconfig: KCONFIG_...
227

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
228
229
230
231
  # SHELL used by kbuild
  CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  	  else if [ -x /bin/bash ]; then echo /bin/bash; \
  	  else echo sh; fi ; fi)
070b98bfd   Sam Ravnborg   kbuild: trivial f...
232
233
  HOSTCC       = gcc
  HOSTCXX      = g++
25583d4b5   Josh Triplett   Makefile: Add -Wm...
234
  HOSTCFLAGS   = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
070b98bfd   Sam Ravnborg   kbuild: trivial f...
235
  HOSTCXXFLAGS = -O2
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
236

070b98bfd   Sam Ravnborg   kbuild: trivial f...
237
238
  # Decide whether to build built-in, modular, or both.
  # Normally, just do built-in.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
239
240
241
242
243
244
245
  
  KBUILD_MODULES :=
  KBUILD_BUILTIN := 1
  
  #	If we have only "make modules", don't compile built-in objects.
  #	When we're building modules with modversions, we need to consider
  #	the built-in objects during the descend as well, in order to
070b98bfd   Sam Ravnborg   kbuild: trivial f...
246
  #	make sure the checksums are up to date before we record them.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
  
  ifeq ($(MAKECMDGOALS),modules)
    KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
  endif
  
  #	If we have "make <whatever> modules", compile modules
  #	in addition to whatever we do anyway.
  #	Just "make" or "make all" shall build modules as well
  
  ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
    KBUILD_MODULES := 1
  endif
  
  ifeq ($(MAKECMDGOALS),)
    KBUILD_MODULES := 1
  endif
e579d351b   Sam Ravnborg   kbuild: KBUILD_VE...
263
  export KBUILD_MODULES KBUILD_BUILTIN
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
264
265
266
267
268
269
270
271
272
273
274
275
276
277
  export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
  
  # Beautify output
  # ---------------------------------------------------------------------------
  #
  # Normally, we echo the whole command before executing it. By making
  # that echo $($(quiet)$(cmd)), we now have the possibility to set
  # $(quiet) to choose other forms of output instead, e.g.
  #
  #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
  #
  # If $(quiet) is empty, the whole command will be printed.
  # If it is set to "quiet_", only the short version will be printed. 
070b98bfd   Sam Ravnborg   kbuild: trivial f...
278
  # If it is set to "silent_", nothing will be printed at all, since
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
279
280
  # the variable $(silent_cmd_cc_o_c) doesn't exist.
  #
a58a414fd   Adrian Bunk   spelling: s/usefu...
281
  # A simple variant is to prefix commands with $(Q) - that's useful
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
  # for commands that shall be hidden in non-verbose mode.
  #
  #	$(Q)ln $@ :<
  #
  # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  
  ifeq ($(KBUILD_VERBOSE),1)
    quiet =
    Q =
  else
    quiet=quiet_
    Q = @
  endif
  
  # If the user is running make -s (silent mode), suppress echoing of
  # commands
  
  ifneq ($(findstring s,$(MAKEFLAGS)),)
    quiet=silent_
  endif
  
  export quiet Q KBUILD_VERBOSE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
305
306
307
  
  # Look for make include files relative to root of kernel src
  MAKEFLAGS += --include-dir=$(srctree)
1cacc9ab8   Sam Ravnborg   kbuild: fix build...
308
309
  # We need some generic definitions (do not try to remake the file).
  $(srctree)/scripts/Kbuild.include: ;
15964864c   Oleg Verych   [PATCH] kbuild: f...
310
  include $(srctree)/scripts/Kbuild.include
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
311
312
313
314
315
316
317
318
319
320
321
322
323
324
  
  # Make variables (CC, etc...)
  
  AS		= $(CROSS_COMPILE)as
  LD		= $(CROSS_COMPILE)ld
  CC		= $(CROSS_COMPILE)gcc
  CPP		= $(CC) -E
  AR		= $(CROSS_COMPILE)ar
  NM		= $(CROSS_COMPILE)nm
  STRIP		= $(CROSS_COMPILE)strip
  OBJCOPY		= $(CROSS_COMPILE)objcopy
  OBJDUMP		= $(CROSS_COMPILE)objdump
  AWK		= awk
  GENKSYMS	= scripts/genksyms/genksyms
caa27b66b   Sam Ravnborg   kbuild: use INSTA...
325
  INSTALLKERNEL  := installkernel
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
326
327
328
329
  DEPMOD		= /sbin/depmod
  KALLSYMS	= scripts/kallsyms
  PERL		= perl
  CHECK		= sparse
80a7d1d99   Hannes Eder   kbuild: disable s...
330
331
  CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
  		  -Wbitwise -Wno-return-void $(CF)
6588169d5   Sam Ravnborg   kbuild: allow ass...
332
333
334
  CFLAGS_MODULE   =
  AFLAGS_MODULE   =
  LDFLAGS_MODULE  =
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
335
336
  CFLAGS_KERNEL	=
  AFLAGS_KERNEL	=
2521f2c22   Peter Oberparleiter   gcov: add gcov pr...
337
  CFLAGS_GCOV	= -fprofile-arcs -ftest-coverage
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
338
339
340
341
  
  
  # Use LINUXINCLUDE when you must reference the include/ directory.
  # Needed to be compatible with the O= option
d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
342
343
  LINUXINCLUDE    := -I$(srctree)/arch/$(hdr-arch)/include \
                     -Iarch/$(hdr-arch)/include/generated -Iinclude \
96f13045b   Sam Ravnborg   kbuild: drop incl...
344
                     $(if $(KBUILD_SRC), -I$(srctree)/include) \
2a11c8ea2   Michal Marek   kconfig: Introduc...
345
                     -include $(srctree)/include/linux/kconfig.h
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
346

d8672b40d   Sam Ravnborg   kbuild: expand -I...
347
  KBUILD_CPPFLAGS := -D__KERNEL__
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
348

a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
349
  KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
94bed2a9c   Dave Jones   Add -Werror-impli...
350
  		   -fno-strict-aliasing -fno-common \
a8735821d   Floris Kraak   Kbuild: Disable t...
351
  		   -Werror-implicit-function-declaration \
a3ca86aea   Eugene Teo   Add '-fno-delete-...
352
353
  		   -Wno-format-security \
  		   -fno-delete-null-pointer-checks
80c00ba94   Sam Ravnborg   kbuild: allow ass...
354
355
  KBUILD_AFLAGS_KERNEL :=
  KBUILD_CFLAGS_KERNEL :=
222d394d3   Sam Ravnborg   kbuild: enable 'm...
356
  KBUILD_AFLAGS   := -D__ASSEMBLY__
6588169d5   Sam Ravnborg   kbuild: allow ass...
357
358
359
  KBUILD_AFLAGS_MODULE  := -DMODULE
  KBUILD_CFLAGS_MODULE  := -DMODULE
  KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
360

f1d28fb04   Roman Zippel   kconfig: move .ke...
361
362
  # Read KERNELRELEASE from include/config/kernel.release (if it exists)
  KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
cacd54ef4   Michal Marek   kbuild: Fix KERNE...
363
  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
364

070b98bfd   Sam Ravnborg   kbuild: trivial f...
365
  export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
80ef88d6d   Sam Ravnborg   x86: simplify "ma...
366
  export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
caa27b66b   Sam Ravnborg   kbuild: use INSTA...
367
368
  export CPP AR NM STRIP OBJCOPY OBJDUMP
  export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
070b98bfd   Sam Ravnborg   kbuild: trivial f...
369
  export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
370

06c5040cd   Sam Ravnborg   kbuild: enable 'm...
371
  export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
2521f2c22   Peter Oberparleiter   gcov: add gcov pr...
372
  export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
222d394d3   Sam Ravnborg   kbuild: enable 'm...
373
  export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
6588169d5   Sam Ravnborg   kbuild: allow ass...
374
  export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
80c00ba94   Sam Ravnborg   kbuild: allow ass...
375
  export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
40df759e2   Michal Marek   kbuild: Fix build...
376
  export KBUILD_ARFLAGS
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
377
378
379
380
381
  
  # When compiling out-of-tree modules, put MODVERDIR in the module
  # tree rather than in the kernel tree. The kernel tree might
  # even be read-only.
  export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
382
  # Files to ignore in find ... statements
406119f49   Trond Myklebust   [PATCH] Ensure th...
383
384
  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
  export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
385
386
387
388
389
  
  # ===========================================================================
  # Rules shared between *config targets and build targets
  
  # Basic helpers built in scripts/
4f1933620   Paul Smith   kbuild: change kb...
390
  PHONY += scripts_basic
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
391
392
  scripts_basic:
  	$(Q)$(MAKE) $(build)=scripts/basic
638adb056   Steven Rostedt   tracing: Only pri...
393
  	$(Q)rm -f .tmp_quiet_recordmcount
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
394

cd05e6bdc   Jan Beulich   [PATCH] kbuild: f...
395
396
  # To avoid any implicit rule to kick in, define an empty command.
  scripts/basic/%: scripts_basic ;
4f1933620   Paul Smith   kbuild: change kb...
397
  PHONY += outputmakefile
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
398
399
400
  # outputmakefile generates a Makefile in the output directory, if using a
  # separate output directory. This allows convenient use of make in the
  # output directory.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
401
  outputmakefile:
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
402
  ifneq ($(KBUILD_SRC),)
929799973   Andi Kleen   kbuild: create th...
403
  	$(Q)ln -fsn $(srctree) source
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
404
405
406
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
  	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
407

d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
408
409
410
411
412
  # Support for using generic headers in asm-generic
  PHONY += asm-generic
  asm-generic:
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
  	            obj=arch/$(SRCARCH)/include/generated/asm
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
413
414
415
416
  # To make sure we do not include .config for any of the *config targets
  # catch them early, and hand them over to scripts/kconfig/Makefile
  # It is allowed to specify more targets when calling make, including
  # mixing *config targets and build targets.
070b98bfd   Sam Ravnborg   kbuild: trivial f...
417
  # For example 'make oldconfig all'.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
418
419
  # Detect when mixed targets is specified, and make a second invocation
  # of make so .config is not included in this case either (for *config).
3eb3c740f   Roman Zippel   [PATCH] fix linux...
420
  no-dot-config-targets := clean mrproper distclean \
f4ed1009f   Jianbin Kang   kbuild: add GNU G...
421
  			 cscope gtags TAGS tags help %docs check% coccicheck \
3eb3c740f   Roman Zippel   [PATCH] fix linux...
422
  			 include/linux/version.h headers_% \
4aed2fd8e   Linus Torvalds   Merge branch 'per...
423
  			 kernelversion %src-pkg
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
  
  config-targets := 0
  mixed-targets  := 0
  dot-config     := 1
  
  ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
  	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
  		dot-config := 0
  	endif
  endif
  
  ifeq ($(KBUILD_EXTMOD),)
          ifneq ($(filter config %config,$(MAKECMDGOALS)),)
                  config-targets := 1
                  ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
                          mixed-targets := 1
                  endif
          endif
  endif
  
  ifeq ($(mixed-targets),1)
  # ===========================================================================
  # We're called with mixed targets (*config and build targets).
  # Handle them one by one.
  
  %:: FORCE
  	$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
  
  else
  ifeq ($(config-targets),1)
  # ===========================================================================
  # *config targets only - make sure prerequisites are updated, and descend
  # in scripts/kconfig to make the *config target
  
  # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
  # KBUILD_DEFCONFIG may point out an alternative default configuration
  # used for 'make defconfig'
74b469f2e   Sam Ravnborg   x86: move i386 an...
461
  include $(srctree)/arch/$(SRCARCH)/Makefile
61bee2044   Al Viro   x86, um: get rid ...
462
  export KBUILD_DEFCONFIG KBUILD_KCONFIG
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
463

31110ebbe   Sam Ravnborg   kbuild: fix make ...
464
465
466
467
468
  config: scripts_basic outputmakefile FORCE
  	$(Q)mkdir -p include/linux include/config
  	$(Q)$(MAKE) $(build)=scripts/kconfig $@
  
  %config: scripts_basic outputmakefile FORCE
c955ccafc   Roman Zippel   kconfig: fix .con...
469
  	$(Q)mkdir -p include/linux include/config
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
470
471
472
473
474
475
476
477
478
479
  	$(Q)$(MAKE) $(build)=scripts/kconfig $@
  
  else
  # ===========================================================================
  # Build targets only - this includes vmlinux, arch specific targets, clean
  # targets and others. In general all targets except *config targets.
  
  ifeq ($(KBUILD_EXTMOD),)
  # Additional helpers built in scripts/
  # Carefully list dependencies so we do not try to build scripts twice
070b98bfd   Sam Ravnborg   kbuild: trivial f...
480
  # in parallel
4f1933620   Paul Smith   kbuild: change kb...
481
  PHONY += scripts
bc081dd6e   Michal Marek   kbuild: generate ...
482
  scripts: scripts_basic include/config/auto.conf include/config/tristate.conf
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
483
  	$(Q)$(MAKE) $(build)=$(@)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
484
485
  # Objects we will link into vmlinux / subdirs we need to visit
  init-y		:= init/
4d2acfbfd   David Woodhouse   firmware: Add CON...
486
  drivers-y	:= drivers/ sound/ firmware/
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
487
488
489
490
491
492
  net-y		:= net/
  libs-y		:= lib/
  core-y		:= usr/
  endif # KBUILD_EXTMOD
  
  ifeq ($(dot-config),1)
9ee4e3365   Sam Ravnborg   kbuild: external ...
493
494
  # Read in config
  -include include/config/auto.conf
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
495

9ee4e3365   Sam Ravnborg   kbuild: external ...
496
  ifeq ($(KBUILD_EXTMOD),)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
497
498
  # Read in dependencies to all Kconfig* files, make sure to run
  # oldconfig if changes are detected.
c955ccafc   Roman Zippel   kconfig: fix .con...
499
  -include include/config/auto.conf.cmd
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
500

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
501
  # To avoid any implicit rule to kick in, define an empty command
14cdd3c40   Roman Zippel   kconfig: KCONFIG_...
502
  $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
503

c955ccafc   Roman Zippel   kconfig: fix .con...
504
  # If .config is newer than include/config/auto.conf, someone tinkered
752625cff   Sam Ravnborg   kbuild: always ru...
505
  # with it and forgot to run make oldconfig.
070b98bfd   Sam Ravnborg   kbuild: trivial f...
506
  # if auto.conf.cmd is missing then we are probably in a cleaned tree so
752625cff   Sam Ravnborg   kbuild: always ru...
507
  # we execute the config step to be sure to catch updated Kconfig files
bc081dd6e   Michal Marek   kbuild: generate ...
508
  include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
509
510
  	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
  else
264a26838   Sam Ravnborg   kbuild: move auto...
511
  # external modules needs include/generated/autoconf.h and include/config/auto.conf
9ee4e3365   Sam Ravnborg   kbuild: external ...
512
513
514
515
  # but do not care if they are up-to-date. Use auto.conf to trigger the test
  PHONY += include/config/auto.conf
  
  include/config/auto.conf:
264a26838   Sam Ravnborg   kbuild: move auto...
516
  	$(Q)test -e include/generated/autoconf.h -a -e $@ || (		\
9ee4e3365   Sam Ravnborg   kbuild: external ...
517
518
  	echo;								\
  	echo "  ERROR: Kernel configuration is invalid.";		\
264a26838   Sam Ravnborg   kbuild: move auto...
519
  	echo "         include/generated/autoconf.h or $@ are missing.";\
9ee4e3365   Sam Ravnborg   kbuild: external ...
520
521
522
523
524
  	echo "         Run 'make oldconfig && make prepare' on kernel src to fix it.";	\
  	echo;								\
  	/bin/false)
  
  endif # KBUILD_EXTMOD
c955ccafc   Roman Zippel   kconfig: fix .con...
525

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
526
527
  else
  # Dummy target needed, because used as prerequisite
c955ccafc   Roman Zippel   kconfig: fix .con...
528
  include/config/auto.conf: ;
9ee4e3365   Sam Ravnborg   kbuild: external ...
529
  endif # $(dot-config)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
530
531
532
533
  
  # The all: target is the default when no target is given on the
  # command line.
  # This allow a user to issue only 'make' to build a kernel including modules
c84471614   Michal Marek   Makefile: clarify...
534
  # Defaults to vmlinux, but the arch makefile usually adds further targets
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
535
536
537
  all: vmlinux
  
  ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
538
  KBUILD_CFLAGS	+= -Os
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
539
  else
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
540
  KBUILD_CFLAGS	+= -O2
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
541
  endif
bef5b54bd   Ralf Baechle   Fix MIPS cross-co...
542
  include $(srctree)/arch/$(SRCARCH)/Makefile
08f67461c   Mike Frysinger   kbuild: fix detec...
543
  ifneq ($(CONFIG_FRAME_WARN),0)
35bb5b1e0   Andi Kleen   Add option to ena...
544
545
  KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
  endif
e06b8b98d   Sam Ravnborg   kbuild: allow -fs...
546
  # Force gcc to behave correct even for buggy distributions
5d707e9c8   Tejun Heo   stackprotector: u...
547
  ifndef CONFIG_CC_STACKPROTECTOR
e06b8b98d   Sam Ravnborg   kbuild: allow -fs...
548
  KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
5d707e9c8   Tejun Heo   stackprotector: u...
549
  endif
e06b8b98d   Sam Ravnborg   kbuild: allow -fs...
550

af0e5d565   Dave Jones   kbuild: Disable -...
551
552
  # This warning generated too much noise in a regular build.
  # Use make W=1 to enable this warning (see scripts/Makefile.build)
8417da6f2   Michal Marek   kbuild: Fix passi...
553
  KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
af0e5d565   Dave Jones   kbuild: Disable -...
554

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
555
  ifdef CONFIG_FRAME_POINTER
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
556
  KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
557
  else
7e9501fde   Rabin Vincent   ARM: 6312/1: ftra...
558
559
560
561
562
563
  # Some targets (ARM with Thumb2, for example), can't be built with frame
  # pointers.  For those, we don't have FUNCTION_TRACER automatically
  # select FRAME_POINTER.  However, FUNCTION_TRACER adds -pg, and this is
  # incompatible with -fomit-frame-pointer with current GCC, so we don't use
  # -fomit-frame-pointer with FUNCTION_TRACER.
  ifndef CONFIG_FUNCTION_TRACER
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
564
  KBUILD_CFLAGS	+= -fomit-frame-pointer
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
565
  endif
7e9501fde   Rabin Vincent   ARM: 6312/1: ftra...
566
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
567
568
  
  ifdef CONFIG_DEBUG_INFO
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
569
  KBUILD_CFLAGS	+= -g
222d394d3   Sam Ravnborg   kbuild: enable 'm...
570
  KBUILD_AFLAGS	+= -gdwarf-2
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
571
  endif
d6f4ceb79   Andi Kleen   Kbuild: Add optio...
572
573
574
  ifdef CONFIG_DEBUG_INFO_REDUCED
  KBUILD_CFLAGS 	+= $(call cc-option, -femit-struct-debug-baseonly)
  endif
606576ce8   Steven Rostedt   ftrace: rename FT...
575
  ifdef CONFIG_FUNCTION_TRACER
16444a8a4   Arnaldo Carvalho de Melo   ftrace: add basic...
576
  KBUILD_CFLAGS	+= -pg
72441cb1f   Steven Rostedt   ftrace/x86: Add s...
577
  ifdef CONFIG_DYNAMIC_FTRACE
cf4db2597   Steven Rostedt   ftrace: Rename co...
578
  	ifdef CONFIG_HAVE_C_RECORDMCOUNT
72441cb1f   Steven Rostedt   ftrace/x86: Add s...
579
580
581
582
  		BUILD_C_RECORDMCOUNT := y
  		export BUILD_C_RECORDMCOUNT
  	endif
  endif
16444a8a4   Arnaldo Carvalho de Melo   ftrace: add basic...
583
  endif
91341d4b2   Sam Ravnborg   kbuild: introduce...
584
585
586
587
  # We trigger additional mismatches with less inlining
  ifdef CONFIG_DEBUG_SECTION_MISMATCH
  KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
  endif
e8e699317   Sam Ravnborg   [PATCH] kbuild: S...
588
  # arch Makefile may override CC so keep this after arch Makefile is included
e8f5bdb02   Rik van Riel   [PATCH] Makefile ...
589
  NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
e8e699317   Sam Ravnborg   [PATCH] kbuild: S...
590
  CHECKFLAGS     += $(NOSTDINC_FLAGS)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
591
  # warn about C99 declaration after statement
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
592
  KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
593

070b98bfd   Sam Ravnborg   kbuild: trivial f...
594
  # disable pointer signed / unsigned warnings in gcc 4.0
8417da6f2   Michal Marek   kbuild: Fix passi...
595
  KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
596

fe8d0a410   Kirill Smelkov   kbuild: fix a few...
597
  # disable invalid "can't wrap" optimizations for signed / pointers
a137802ee   Linus Torvalds   Don't use '-fwrap...
598
  KBUILD_CFLAGS	+= $(call cc-option,-fno-strict-overflow)
d0115552c   Linus Torvalds   Move cc-option to...
599

8f7f5c9fc   Andi Kleen   kbuild: set -fcon...
600
601
  # conserve stack if available
  KBUILD_CFLAGS   += $(call cc-option,-fconserve-stack)
40df759e2   Michal Marek   kbuild: Fix build...
602
603
  # use the deterministic mode of AR if available
  KBUILD_ARFLAGS := $(call ar-option,D)
bf5438fca   Jason Baron   jump label: Base ...
604
605
606
607
  # check for 'asm goto'
  ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
  	KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
  endif
06c5040cd   Sam Ravnborg   kbuild: enable 'm...
608
  # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
69ee0b352   Sam Ravnborg   kbuild: do not pi...
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
  # But warn user when we do so
  warn-assign = \
  $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
  
  ifneq ($(KCPPFLAGS),)
          $(call warn-assign,CPPFLAGS)
          KBUILD_CPPFLAGS += $(KCPPFLAGS)
  endif
  ifneq ($(KAFLAGS),)
          $(call warn-assign,AFLAGS)
          KBUILD_AFLAGS += $(KAFLAGS)
  endif
  ifneq ($(KCFLAGS),)
          $(call warn-assign,CFLAGS)
          KBUILD_CFLAGS += $(KCFLAGS)
  endif
52bcc3308   Sam Ravnborg   kbuild: enable us...
625

18991197b   Roland McGrath   Use --build-id ld...
626
627
  # Use --build-id when available.
  LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
f86fd3066   Sam Ravnborg   kbuild: rename ld...
628
  			      $(call cc-ldoption, -Wl$(comma)--build-id,))
6588169d5   Sam Ravnborg   kbuild: allow ass...
629
  KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
18991197b   Roland McGrath   Use --build-id ld...
630
  LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
5d7d18f5b   David Howells   kbuild: make it p...
631
  ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
d79a27195   Andi Kleen   kbuild: Check if ...
632
  LDFLAGS_vmlinux	+= $(call ld-option, -X,)
5d7d18f5b   David Howells   kbuild: make it p...
633
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
634
  # Default kernel image to build when no specific target is given.
070b98bfd   Sam Ravnborg   kbuild: trivial f...
635
  # KBUILD_IMAGE may be overruled on the command line or
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
636
637
638
639
640
641
642
643
644
645
646
647
648
  # set in the environment
  # Also any assignments in arch/$(ARCH)/Makefile take precedence over
  # this default value
  export KBUILD_IMAGE ?= vmlinux
  
  #
  # INSTALL_PATH specifies where to place the updated kernel and system map
  # images. Default is /boot, but you can set it to other values
  export	INSTALL_PATH ?= /boot
  
  #
  # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
  # relocations required by build roots.  This is not defined in the
070b98bfd   Sam Ravnborg   kbuild: trivial f...
649
  # makefile but the argument can be passed to make if needed.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
650
  #
df9df036d   Sam Ravnborg   kbuild: fix 'make...
651
  MODLIB	= $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
652
  export MODLIB
ac031f26e   Theodore Ts'o   kbuild: add optio...
653
  #
2ea038917   Sam Ravnborg   Revert "kbuild: s...
654
655
656
  #  INSTALL_MOD_STRIP, if defined, will cause modules to be
  #  stripped after they are installed.  If INSTALL_MOD_STRIP is '1', then
  #  the default option --strip-debug will be used.  Otherwise,
177b241d0   Gilles Espinasse   kbuild, mtd, net:...
657
  #  INSTALL_MOD_STRIP value will be used as the options to the strip command.
2ea038917   Sam Ravnborg   Revert "kbuild: s...
658

ac031f26e   Theodore Ts'o   kbuild: add optio...
659
660
  ifdef INSTALL_MOD_STRIP
  ifeq ($(INSTALL_MOD_STRIP),1)
2ea038917   Sam Ravnborg   Revert "kbuild: s...
661
  mod_strip_cmd = $(STRIP) --strip-debug
ac031f26e   Theodore Ts'o   kbuild: add optio...
662
  else
2ea038917   Sam Ravnborg   Revert "kbuild: s...
663
  mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
ac031f26e   Theodore Ts'o   kbuild: add optio...
664
665
  endif # INSTALL_MOD_STRIP=1
  else
2ea038917   Sam Ravnborg   Revert "kbuild: s...
666
  mod_strip_cmd = true
ac031f26e   Theodore Ts'o   kbuild: add optio...
667
668
  endif # INSTALL_MOD_STRIP
  export mod_strip_cmd
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
669
670
  
  ifeq ($(KBUILD_EXTMOD),)
3a65dfe8c   Jens Axboe   [BLOCK] Move all ...
671
  core-y		+= kernel/ mm/ fs/ ipc/ security/ crypto/ block/
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
  
  vmlinux-dirs	:= $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
  		     $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
  		     $(net-y) $(net-m) $(libs-y) $(libs-m)))
  
  vmlinux-alldirs	:= $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
  		     $(init-n) $(init-) \
  		     $(core-n) $(core-) $(drivers-n) $(drivers-) \
  		     $(net-n)  $(net-)  $(libs-n)    $(libs-))))
  
  init-y		:= $(patsubst %/, %/built-in.o, $(init-y))
  core-y		:= $(patsubst %/, %/built-in.o, $(core-y))
  drivers-y	:= $(patsubst %/, %/built-in.o, $(drivers-y))
  net-y		:= $(patsubst %/, %/built-in.o, $(net-y))
  libs-y1		:= $(patsubst %/, %/lib.a, $(libs-y))
  libs-y2		:= $(patsubst %/, %/built-in.o, $(libs-y))
  libs-y		:= $(libs-y1) $(libs-y2)
  
  # Build vmlinux
  # ---------------------------------------------------------------------------
070b98bfd   Sam Ravnborg   kbuild: trivial f...
692
  # vmlinux is built from the objects selected by $(vmlinux-init) and
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
693
  # $(vmlinux-main). Most are built-in.o files from top-level directories
2462566f2   Uwe Zeisberger   kbuild: add a mis...
694
  # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
  # Ordering when linking is important, and $(vmlinux-init) must be first.
  #
  # vmlinux
  #   ^
  #   |
  #   +-< $(vmlinux-init)
  #   |   +--< init/version.o + more
  #   |
  #   +--< $(vmlinux-main)
  #   |    +--< driver/built-in.o mm/built-in.o + more
  #   |
  #   +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
  #
  # vmlinux version (uname -v) cannot be updated during normal
  # descending-into-subdirs phase since we do not yet know if we need to
  # update vmlinux.
  # Therefore this step is delayed until just before final link of vmlinux -
  # except in the kallsyms case where it is done just before adding the
  # symbols to the kernel.
  #
  # System.map is generated to document addresses of all kernel symbols
  
  vmlinux-init := $(head-y) $(init-y)
  vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
  vmlinux-all  := $(vmlinux-init) $(vmlinux-main)
6752ed90d   Thomas Gleixner   Kbuild: allow arc...
720
  vmlinux-lds  := arch/$(SRCARCH)/kernel/vmlinux.lds
85bd2fddd   Sam Ravnborg   kbuild: fix secti...
721
  export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
722
723
724
725
726
727
728
  
  # Rule to link vmlinux - also used during CONFIG_KALLSYMS
  # May be overridden by arch/$(ARCH)/Makefile
  quiet_cmd_vmlinux__ ?= LD      $@
        cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
        -T $(vmlinux-lds) $(vmlinux-init)                          \
        --start-group $(vmlinux-main) --end-group                  \
741f98fe2   Sam Ravnborg   kbuild: do sectio...
729
        $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
730
731
732
733
  
  # Generate new vmlinux version
  quiet_cmd_vmlinux_version = GEN     .version
        cmd_vmlinux_version = set -e;                     \
4e25d8bb9   Jan Beulich   [PATCH] kbuild: a...
734
735
736
737
738
739
740
  	if [ ! -r .version ]; then			\
  	  rm -f .version;				\
  	  echo 1 >.version;				\
  	else						\
  	  mv .version .old_version;			\
  	  expr 0$$(cat .old_version) + 1 >.version;	\
  	fi;						\
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
741
742
743
  	$(MAKE) $(build)=init
  
  # Generate System.map
070b98bfd   Sam Ravnborg   kbuild: trivial f...
744
  quiet_cmd_sysmap = SYSMAP
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
745
746
747
748
749
        cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
  
  # Link of vmlinux
  # If CONFIG_KALLSYMS is set .version is already updated
  # Generate System.map and verify that the content is consistent
39ca371c4   Mark Rustad   [PATCH] kbuild: E...
750
751
  # Use + in front of the vmlinux_version rule to silent warning with make -j2
  # First command is ':' to allow us to use + in front of the rule
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
752
  define rule_vmlinux__
39ca371c4   Mark Rustad   [PATCH] kbuild: E...
753
  	:
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
754
755
756
757
  	$(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
  
  	$(call cmd,vmlinux__)
  	$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
4635281c8   Sam Ravnborg   kbuild: preperly ...
758
759
760
761
762
763
  	$(Q)$(if $($(quiet)cmd_sysmap),                                      \
  	  echo '  $($(quiet)cmd_sysmap)  System.map' &&)                     \
  	$(cmd_sysmap) $@ System.map;                                         \
  	if [ $$? -ne 0 ]; then                                               \
  		rm -f $@;                                                    \
  		/bin/false;                                                  \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
  	fi;
  	$(verify_kallsyms)
  endef
  
  
  ifdef CONFIG_KALLSYMS
  # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
  # It's a three stage process:
  # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
  #   empty
  #   Running kallsyms on that gives us .tmp_kallsyms1.o with
  #   the right size - vmlinux version (uname -v) is updated during this step
  # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
  #   but due to the added section, some addresses have shifted.
  #   From here, we generate a correct .tmp_kallsyms2.o
  # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
  # o Verify that the System.map from vmlinux matches the map from
  #   .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
1e2795a11   Artem Bityutskiy   kbuild: move KALL...
782
  # o If 'make KALLSYMS_EXTRA_PASS=1" was used, do an extra pass using
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
783
784
785
  #   .tmp_vmlinux3 and .tmp_kallsyms3.o.  This is only meant as a
  #   temporary bypass to allow the kernel to be built while the
  #   maintainers work out what went wrong with kallsyms.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
786
  last_kallsyms := 2
1e2795a11   Artem Bityutskiy   kbuild: move KALL...
787
788
789
790
791
  
  ifdef KALLSYMS_EXTRA_PASS
  ifneq ($(KALLSYMS_EXTRA_PASS),0)
  last_kallsyms := 3
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
792
793
794
795
796
  endif
  
  kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
  
  define verify_kallsyms
4635281c8   Sam Ravnborg   kbuild: preperly ...
797
798
  	$(Q)$(if $($(quiet)cmd_sysmap),                                      \
  	  echo '  $($(quiet)cmd_sysmap)  .tmp_System.map' &&)                \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
799
  	  $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
4635281c8   Sam Ravnborg   kbuild: preperly ...
800
801
  	$(Q)cmp -s System.map .tmp_System.map ||                             \
  		(echo Inconsistent kallsyms data;                            \
1e2795a11   Artem Bityutskiy   kbuild: move KALL...
802
803
  		 echo This is a bug - please report about it;                \
  		 echo Try "make KALLSYMS_EXTRA_PASS=1" as a workaround;      \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
804
805
806
807
808
  		 rm .tmp_kallsyms* ; /bin/false )
  endef
  
  # Update vmlinux version before link
  # Use + in front of this rule to silent warning about make -j1
72ba47c1b   Sam Ravnborg   kbuild: silence m...
809
  # First command is ':' to allow us to use + in front of this rule
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
810
811
  cmd_ksym_ld = $(cmd_vmlinux__)
  define rule_ksym_ld
72ba47c1b   Sam Ravnborg   kbuild: silence m...
812
  	: 
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
813
814
815
816
817
818
819
  	+$(call cmd,vmlinux_version)
  	$(call cmd,vmlinux__)
  	$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
  endef
  
  # Generate .S file with all kernel symbols
  quiet_cmd_kallsyms = KSYM    $@
2ea038917   Sam Ravnborg   Revert "kbuild: s...
820
821
        cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
                       $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
9bb482476   Jan Beulich   allow stripping o...
822

2ea038917   Sam Ravnborg   Revert "kbuild: s...
823
  .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
824
  	$(call if_changed_dep,as_o_S)
2ea038917   Sam Ravnborg   Revert "kbuild: s...
825
  .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
826
827
828
  	$(call cmd,kallsyms)
  
  # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
2ea038917   Sam Ravnborg   Revert "kbuild: s...
829
830
  .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
  	$(call if_changed_rule,ksym_ld)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
831

2ea038917   Sam Ravnborg   Revert "kbuild: s...
832
833
  .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
  	$(call if_changed,vmlinux__)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
834

2ea038917   Sam Ravnborg   Revert "kbuild: s...
835
836
  .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
  	$(call if_changed,vmlinux__)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
837
838
839
  
  # Needs to visit scripts/ before $(KALLSYMS) can be used.
  $(KALLSYMS): scripts ;
33bc25eae   Sam Ravnborg   kbuild: Add targe...
840
841
842
843
844
845
846
847
848
  # Generate some data for debugging strange kallsyms problems
  debug_kallsyms: .tmp_map$(last_kallsyms)
  
  .tmp_map%: .tmp_vmlinux% FORCE
  	($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
  
  .tmp_map3: .tmp_map2
  
  .tmp_map2: .tmp_map1
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
849
  endif # ifdef CONFIG_KALLSYMS
741f98fe2   Sam Ravnborg   kbuild: do sectio...
850
851
852
853
854
  # Do modpost on a prelinked vmlinux. The finally linked vmlinux has
  # relevant sections renamed as per the linker script.
  quiet_cmd_vmlinux-modpost = LD      $@
        cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@                          \
  	 $(vmlinux-init) --start-group $(vmlinux-main) --end-group             \
90ebd878a   Sam Ravnborg   kbuild: fix vmlin...
855
  	 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
741f98fe2   Sam Ravnborg   kbuild: do sectio...
856
857
858
859
860
861
  define rule_vmlinux-modpost
  	:
  	+$(call cmd,vmlinux-modpost)
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
  	$(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
  endef
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
862
  # vmlinux image - including updated kernel symbols
310f8243a   Sam Ravnborg   kbuild: link vmli...
863
  vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE
0f836e5fe   David Woodhouse   [PATCH] Add CONFI...
864
  ifdef CONFIG_HEADERS_CHECK
0e7af8d04   David Woodhouse   [PATCH] Fix heade...
865
  	$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
0f836e5fe   David Woodhouse   [PATCH] Add CONFI...
866
  endif
267c4025f   Mathieu Desnoyers   markers: Add samp...
867
868
869
  ifdef CONFIG_SAMPLES
  	$(Q)$(MAKE) $(build)=samples
  endif
3794f3e81   Randy Dunlap   docsrc: build Doc...
870
871
872
  ifdef CONFIG_BUILD_DOCSRC
  	$(Q)$(MAKE) $(build)=Documentation
  endif
741f98fe2   Sam Ravnborg   kbuild: do sectio...
873
  	$(call vmlinux-modpost)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
874
  	$(call if_changed_rule,vmlinux__)
4e25d8bb9   Jan Beulich   [PATCH] kbuild: a...
875
  	$(Q)rm -f .old_version
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
876

310f8243a   Sam Ravnborg   kbuild: link vmli...
877
  # build vmlinux.o first to catch section mismatch errors early
cf87dcd14   Sam Ravnborg   kbuild: fix build...
878
879
880
  ifdef CONFIG_KALLSYMS
  .tmp_vmlinux1: vmlinux.o
  endif
90ebd878a   Sam Ravnborg   kbuild: fix vmlin...
881
882
883
  
  modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))
  vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE
741f98fe2   Sam Ravnborg   kbuild: do sectio...
884
  	$(call if_changed_rule,vmlinux-modpost)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
885
886
887
888
889
890
891
892
893
  # The actual objects are generated when descending, 
  # make sure no implicit rule kicks in
  $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
  
  # Handle descending into subdirectories listed in $(vmlinux-dirs)
  # Preset locale variables to speed up the build process. Limit locale
  # tweaks to this spot to avoid wrong language settings when running
  # make menuconfig etc.
  # Error messages still appears in the original language
4f1933620   Paul Smith   kbuild: change kb...
894
  PHONY += $(vmlinux-dirs)
5bb782690   Sam Ravnborg   kbuild: rename pr...
895
  $(vmlinux-dirs): prepare scripts
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
896
  	$(Q)$(MAKE) $(build)=$@
f1d28fb04   Roman Zippel   kconfig: move .ke...
897
  # Store (new) KERNELRELASE string in include/config/kernel.release
f1d28fb04   Roman Zippel   kconfig: move .ke...
898
  include/config/kernel.release: include/config/auto.conf FORCE
2244cbd8a   Sam Ravnborg   kbuild: create .k...
899
  	$(Q)rm -f $@
7263e715c   Michal Marek   kbuild: Fix path ...
900
  	$(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@
cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
901

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
902
  # Things we need to do before we recursively start building the kernel
5bb782690   Sam Ravnborg   kbuild: rename pr...
903
904
905
906
  # or the modules are listed in "prepare".
  # A multi level approach is used. prepareN is processed before prepareN-1.
  # archprepare is used in arch Makefiles and when processed asm symlink,
  # version.h and scripts_basic is processed / created.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
907

5bb782690   Sam Ravnborg   kbuild: rename pr...
908
  # Listed in dependency order
4f1933620   Paul Smith   kbuild: change kb...
909
  PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
5bb782690   Sam Ravnborg   kbuild: rename pr...
910

86feeaa81   Sam Ravnborg   kbuild: full depe...
911
  # prepare3 is used to check if we are building in a separate output directory,
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
912
913
  # and if so do:
  # 1) Check that make has not been executed in the kernel src $(srctree)
f1d28fb04   Roman Zippel   kconfig: move .ke...
914
  prepare3: include/config/kernel.release
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
915
  ifneq ($(KBUILD_SRC),)
fd54f5028   Mike Frysinger   kbuild: use KECHO...
916
  	@$(kecho) '  Using $(srctree) as source for kernel'
c955ccafc   Roman Zippel   kconfig: fix .con...
917
  	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
918
919
920
921
  		echo "  $(srctree) is not clean, please run 'make mrproper'";\
  		echo "  in the '$(srctree)' directory.";\
  		/bin/false; \
  	fi;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
922
  endif
86feeaa81   Sam Ravnborg   kbuild: full depe...
923
  # prepare2 creates a makefile if using a separate output directory
d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
924
  prepare2: prepare3 outputmakefile asm-generic
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
925

273b281fa   Sam Ravnborg   kbuild: move utsr...
926
  prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \
f7f16b779   Sam Ravnborg   kbuild: drop incl...
927
                     include/config/auto.conf
7bb9d092d   Sam Ravnborg   kbuild: fix first...
928
  	$(cmd_crmodverdir)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
929

5bb782690   Sam Ravnborg   kbuild: rename pr...
930
931
932
  archprepare: prepare1 scripts_basic
  
  prepare0: archprepare FORCE
8d36a6236   Sam Ravnborg   kbuild: fix gener...
933
  	$(Q)$(MAKE) $(build)=.
c53aeca05   Sam Ravnborg   kbuild: complain ...
934
  	$(Q)$(MAKE) $(build)=. missing-syscalls
86feeaa81   Sam Ravnborg   kbuild: full depe...
935

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
936
  # All the preparing..
d395efb54   Robert P. J. Day   [PATCH] Kbuild: R...
937
  prepare: prepare0
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
938

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
939
940
941
942
943
944
945
  # Generate some files
  # ---------------------------------------------------------------------------
  
  # KERNELRELEASE can change from a few different places, meaning version.h
  # needs to be updated, so this check is forced on all builds
  
  uts_len := 64
63104eec2   Sam Ravnborg   kbuild: introduce...
946
947
948
949
950
951
952
  define filechk_utsrelease.h
  	if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
  	  echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2;    \
  	  exit 1;                                                         \
  	fi;                                                               \
  	(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
  endef
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
953
954
  
  define filechk_version.h
63104eec2   Sam Ravnborg   kbuild: introduce...
955
  	(echo \#define LINUX_VERSION_CODE $(shell                             \
78d3bb448   Michal Marek   kbuild: Fix <linu...
956
  	expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL));    \
63104eec2   Sam Ravnborg   kbuild: introduce...
957
  	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
958
  endef
63104eec2   Sam Ravnborg   kbuild: introduce...
959
  include/linux/version.h: $(srctree)/Makefile FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
960
  	$(call filechk,version.h)
273b281fa   Sam Ravnborg   kbuild: move utsr...
961
  include/generated/utsrelease.h: include/config/kernel.release FORCE
63104eec2   Sam Ravnborg   kbuild: introduce...
962
  	$(call filechk,utsrelease.h)
179efcb47   Vegard Nossum   kbuild: add heade...
963
964
  PHONY += headerdep
  headerdep:
9663d9890   Peter Foley   kbuild: make head...
965
966
  	$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
  	$(srctree)/scripts/headerdep.pl -I$(srctree)/include
179efcb47   Vegard Nossum   kbuild: add heade...
967

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
968
  # ---------------------------------------------------------------------------
4f1933620   Paul Smith   kbuild: change kb...
969
  PHONY += depend dep
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
970
971
972
973
  depend dep:
  	@echo '*** Warning: make $@ is unnecessary now.'
  
  # ---------------------------------------------------------------------------
88ecf814c   David Woodhouse   firmware: Add fir...
974
975
976
977
978
979
980
981
982
983
  # Firmware install
  INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
  export INSTALL_FW_PATH
  
  PHONY += firmware_install
  firmware_install: FORCE
  	@mkdir -p $(objtree)/firmware
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
  
  # ---------------------------------------------------------------------------
8d730cfb5   David Woodhouse   Basic implementat...
984
  # Kernel headers
8d730cfb5   David Woodhouse   Basic implementat...
985

e6883b187   Sam Ravnborg   kbuild: refactor ...
986
987
  #Default location for installed headers
  export INSTALL_HDR_PATH = $(objtree)/usr
6d7162758   David Woodhouse   New 'make headers...
988

e6883b187   Sam Ravnborg   kbuild: refactor ...
989
  hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
990
991
992
  
  # If we do an all arch process set dst to asm-$(hdr-arch)
  hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
e6883b187   Sam Ravnborg   kbuild: refactor ...
993
994
  
  PHONY += __headers
d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
995
  __headers: include/linux/version.h scripts_basic asm-generic FORCE
e1b702cf2   Mike Waychison   KBuild: silence "...
996
  	$(Q)$(MAKE) $(build)=scripts build_unifdef
e6883b187   Sam Ravnborg   kbuild: refactor ...
997
998
  
  PHONY += headers_install_all
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
999
1000
  headers_install_all:
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
6d7162758   David Woodhouse   New 'make headers...
1001

8d730cfb5   David Woodhouse   Basic implementat...
1002
  PHONY += headers_install
e6883b187   Sam Ravnborg   kbuild: refactor ...
1003
  headers_install: __headers
c95fa08a3   Sam Ravnborg   kbuild: do not ch...
1004
  	$(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1005
  	$(error Headers not exportable for the $(SRCARCH) architecture))
88181ec30   Sam Ravnborg   kbuild: only one ...
1006
  	$(Q)$(MAKE) $(hdr-inst)=include
c95fa08a3   Sam Ravnborg   kbuild: do not ch...
1007
  	$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst)
8d730cfb5   David Woodhouse   Basic implementat...
1008

1f85712e6   Mike Frysinger   [PATCH] new tople...
1009
1010
  PHONY += headers_check_all
  headers_check_all: headers_install_all
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1011
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1f85712e6   Mike Frysinger   [PATCH] new tople...
1012

684753599   David Woodhouse   Basic implementat...
1013
1014
  PHONY += headers_check
  headers_check: headers_install
88181ec30   Sam Ravnborg   kbuild: only one ...
1015
  	$(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1
c95fa08a3   Sam Ravnborg   kbuild: do not ch...
1016
  	$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1
684753599   David Woodhouse   Basic implementat...
1017

8d730cfb5   David Woodhouse   Basic implementat...
1018
  # ---------------------------------------------------------------------------
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1019
1020
1021
  # Modules
  
  ifdef CONFIG_MODULES
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1022
  # By default, build modules as well
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1023

73d1393eb   Michal Marek   kbuild: Generate ...
1024
  all: modules
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1025
1026
  
  #	Build modules
551559e13   Tejun Heo   kbuild: implement...
1027
1028
1029
1030
  #
  #	A module can be listed more than once in obj-m resulting in
  #	duplicate lines in modules.order files.  Those are removed
  #	using awk while concatenating to the final file.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1031

4f1933620   Paul Smith   kbuild: change kb...
1032
  PHONY += modules
2da30e703   Michal Marek   kbuild: Generate ...
1033
  modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
551559e13   Tejun Heo   kbuild: implement...
1034
  	$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
fd54f5028   Mike Frysinger   kbuild: use KECHO...
1035
  	@$(kecho) '  Building modules, stage 2.';
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1036
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
44463f7dd   David Woodhouse   firmware: create ...
1037
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1038

a6c366324   Michal Marek   kbuild: Do not un...
1039
1040
  modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
  	$(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
73d1393eb   Michal Marek   kbuild: Generate ...
1041
  %/modules.builtin: include/config/auto.conf
a6c366324   Michal Marek   kbuild: Do not un...
1042
  	$(Q)$(MAKE) $(modbuiltin)=$*
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1043
1044
  
  # Target to prepare building external modules
4f1933620   Paul Smith   kbuild: change kb...
1045
  PHONY += modules_prepare
5bb782690   Sam Ravnborg   kbuild: rename pr...
1046
  modules_prepare: prepare scripts
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1047
1048
  
  # Target to install modules
4f1933620   Paul Smith   kbuild: change kb...
1049
  PHONY += modules_install
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1050
  modules_install: _modinst_ _modinst_post
4f1933620   Paul Smith   kbuild: change kb...
1051
  PHONY += _modinst_
2da30e703   Michal Marek   kbuild: Generate ...
1052
  _modinst_:
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1053
1054
1055
1056
1057
1058
1059
1060
  	@rm -rf $(MODLIB)/kernel
  	@rm -f $(MODLIB)/source
  	@mkdir -p $(MODLIB)/kernel
  	@ln -s $(srctree) $(MODLIB)/source
  	@if [ ! $(objtree) -ef  $(MODLIB)/build ]; then \
  		rm -f $(MODLIB)/build ; \
  		ln -s $(objtree) $(MODLIB)/build ; \
  	fi
551559e13   Tejun Heo   kbuild: implement...
1061
  	@cp -f $(objtree)/modules.order $(MODLIB)/
bc081dd6e   Michal Marek   kbuild: generate ...
1062
  	@cp -f $(objtree)/modules.builtin $(MODLIB)/
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1063
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1064

50a8ec31c   Sam Ravnborg   kbuild: disable d...
1065
  # This depmod is only for convenience to give the initial
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1066
1067
  # boot a modules.dep even before / is mounted read-write.  However the
  # boot script depmod is the master version.
4f1933620   Paul Smith   kbuild: change kb...
1068
  PHONY += _modinst_post
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1069
  _modinst_post: _modinst_
88ecf814c   David Woodhouse   firmware: Add fir...
1070
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1071
  	$(call cmd,depmod)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
  
  else # CONFIG_MODULES
  
  # Modules not configured
  # ---------------------------------------------------------------------------
  
  modules modules_install: FORCE
  	@echo
  	@echo "The present kernel configuration has modules disabled."
  	@echo "Type 'make config' and enable loadable module support."
  	@echo "Then build a kernel with module support enabled."
  	@echo
  	@exit 1
  
  endif # CONFIG_MODULES
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
  ###
  # Cleaning is done on three levels.
  # make clean     Delete most generated files
  #                Leave enough to build external modules
  # make mrproper  Delete the current configuration, and all generated files
  # make distclean Remove editor backup files, patch leftover files and the like
  
  # Directories & files removed with 'make clean'
  CLEAN_DIRS  += $(MODVERDIR)
  CLEAN_FILES +=	vmlinux System.map \
                  .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
  
  # Directories & files removed with 'make mrproper'
d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
1100
1101
  MRPROPER_DIRS  += include/config usr/include include/generated          \
                    arch/*/include/generated
f7f16b779   Sam Ravnborg   kbuild: drop incl...
1102
  MRPROPER_FILES += .config .config.old .version .old_version             \
264a26838   Sam Ravnborg   kbuild: move auto...
1103
                    include/linux/version.h                               \
f4ed1009f   Jianbin Kang   kbuild: add GNU G...
1104
  		  Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1105
1106
1107
1108
1109
  
  # clean - Delete most, but leave enough to build external modules
  #
  clean: rm-dirs  := $(CLEAN_DIRS)
  clean: rm-files := $(CLEAN_FILES)
c47f214ac   Michal Marek   kbuild: Do not ru...
1110
  clean-dirs      := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1111

4f1933620   Paul Smith   kbuild: change kb...
1112
  PHONY += $(clean-dirs) clean archclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1113
1114
  $(clean-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
88d7be031   Michal Marek   kbuild: Use a sin...
1115
  clean: archclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1116
1117
1118
1119
1120
1121
  
  # mrproper - Delete all generated files, including .config
  #
  mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
  mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
  mrproper-dirs      := $(addprefix _mrproper_,Documentation/DocBook scripts)
4f1933620   Paul Smith   kbuild: change kb...
1122
  PHONY += $(mrproper-dirs) mrproper archmrproper
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1123
1124
1125
1126
1127
1128
1129
1130
1131
  $(mrproper-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
  
  mrproper: clean archmrproper $(mrproper-dirs)
  	$(call cmd,rmdirs)
  	$(call cmd,rmfiles)
  
  # distclean
  #
4f1933620   Paul Smith   kbuild: change kb...
1132
  PHONY += distclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1133
1134
1135
  
  distclean: mrproper
  	@find $(srctree) $(RCS_FIND_IGNORE) \
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1136
  		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1137
  		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1138
  		-o -name '.*.rej' -o -size 0 \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1139
1140
1141
1142
1143
1144
1145
1146
  		-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
  		-type f -print | xargs rm -f
  
  
  # Packaging of the kernel to various formats
  # ---------------------------------------------------------------------------
  # rpm target kept for backward compatibility
  package-dir	:= $(srctree)/scripts/package
bafb67470   Arnaldo Carvalho de Melo   perf tools: Allow...
1147
1148
  %src-pkg: FORCE
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6de   Zach Brown   kbuild: add depen...
1149
  %pkg: include/config/kernel.release FORCE
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1150
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6de   Zach Brown   kbuild: add depen...
1151
  rpm: include/config/kernel.release FORCE
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1152
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1153
1154
1155
1156
  
  
  # Brief documentation of the typical targets used
  # ---------------------------------------------------------------------------
5dffbe811   Segher Boessenkool   kbuild: show defc...
1157
  boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1158
  boards := $(notdir $(boards))
5dffbe811   Segher Boessenkool   kbuild: show defc...
1159
1160
  board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
  board-dirs := $(sort $(notdir $(board-dirs:/=)))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1161
1162
1163
  
  help:
  	@echo  'Cleaning targets:'
5ea084ef9   Samuel Tardieu   Use consistent ca...
1164
  	@echo  '  clean		  - Remove most generated files but keep the config and'
5cc8d246d   Jesper Juhl   kbuild: add distc...
1165
  	@echo  '                    enough build support to build external modules'
5ea084ef9   Samuel Tardieu   Use consistent ca...
1166
  	@echo  '  mrproper	  - Remove all generated files + config + various backup files'
5cc8d246d   Jesper Juhl   kbuild: add distc...
1167
  	@echo  '  distclean	  - mrproper + remove editor backup and patch files'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1168
1169
1170
1171
1172
1173
1174
1175
  	@echo  ''
  	@echo  'Configuration targets:'
  	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
  	@echo  ''
  	@echo  'Other generic targets:'
  	@echo  '  all		  - Build all targets marked with [*]'
  	@echo  '* vmlinux	  - Build the bare kernel'
  	@echo  '* modules	  - Build all modules'
9cc5d74c8   Bodo Eggert   kbuild: document ...
1176
  	@echo  '  modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
88ecf814c   David Woodhouse   firmware: Add fir...
1177
1178
  	@echo  '  firmware_install- Install all firmware to INSTALL_FW_PATH'
  	@echo  '                    (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1179
  	@echo  '  dir/            - Build all files in dir and below'
627189797   Joe Perches   Makefile: Documen...
1180
1181
1182
  	@echo  '  dir/file.[oisS] - Build specified target only'
  	@echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
  	@echo  '                    (requires a recent binutils and recent build (System.map))'
155ad605b   Sam Ravnborg   [PATCH] kbuild: b...
1183
  	@echo  '  dir/file.ko     - Build module including final link'
c4d5ee67c   Robert P. J. Day   kbuild: "make pre...
1184
  	@echo  '  modules_prepare - Set up for building external modules'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1185
1186
  	@echo  '  tags/TAGS	  - Generate tags file for editors'
  	@echo  '  cscope	  - Generate cscope index'
f4ed1009f   Jianbin Kang   kbuild: add GNU G...
1187
  	@echo  '  gtags           - Generate GNU GLOBAL index'
6d1288425   Zach Brown   [PATCH] kbuild: a...
1188
  	@echo  '  kernelrelease	  - Output the release version string'
cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
1189
  	@echo  '  kernelversion	  - Output the version stored in Makefile'
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1190
  	@echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
59df3230f   Geert Uytterhoeven   [PATCH] `make hel...
1191
  	 echo  '                    (default: $(INSTALL_HDR_PATH))'; \
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1192
  	 echo  ''
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1193
  	@echo  'Static analysers'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1194
1195
  	@echo  '  checkstack      - Generate a list of stack hogs'
  	@echo  '  namespacecheck  - Name space analysis on compiled kernel'
aa025e7d5   Sam Ravnborg   kbuild: document ...
1196
  	@echo  '  versioncheck    - Sanity check on version.h usage'
ec2d987f9   Randy Dunlap   kbuild: add 'incl...
1197
  	@echo  '  includecheck    - Check for duplicate included header files'
295ac0518   Adrian Bunk   kbuild: call expo...
1198
  	@echo  '  export_report   - List the usages of all exported symbols'
179efcb47   Vegard Nossum   kbuild: add heade...
1199
  	@echo  '  headers_check   - Sanity check on exported headers'
74425eee7   Nicolas Palix   Add a target to u...
1200
1201
1202
  	@echo  '  headerdep       - Detect inclusion cycles in headers'
  	@$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
  	@echo  ''
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1203
  	@echo  'Kernel packaging:'
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1204
  	@$(MAKE) $(build)=$(package-dir) help
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1205
1206
1207
1208
  	@echo  ''
  	@echo  'Documentation targets:'
  	@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
  	@echo  ''
01dee1881   Andres Salomon   kbuild: fix help ...
1209
  	@echo  'Architecture specific targets ($(SRCARCH)):'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1210
  	@$(if $(archhelp),$(archhelp),\
01dee1881   Andres Salomon   kbuild: fix help ...
1211
  		echo '  No architecture specific help defined for $(SRCARCH)')
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1212
1213
1214
1215
1216
1217
  	@echo  ''
  	@$(if $(boards), \
  		$(foreach b, $(boards), \
  		printf "  %-24s - Build for %s\
  " $(b) $(subst _defconfig,,$(b));) \
  		echo '')
5dffbe811   Segher Boessenkool   kbuild: show defc...
1218
1219
1220
1221
1222
1223
1224
  	@$(if $(board-dirs), \
  		$(foreach b, $(board-dirs), \
  		printf "  %-16s - Show %s-specific targets\
  " help-$(b) $(b);) \
  		printf "  %-16s - Show all of the above\
  " help-boards; \
  		echo '')
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1225
1226
  
  	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
45d506bd6   Sam Ravnborg   kbuild: make V=2 ...
1227
  	@echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1228
  	@echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
701842e3b   Dustin Kirkland   kbuild: documenta...
1229
1230
  	@echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
  	@echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
af07ce3e7   Ingo Molnar   Merge branch 'tip...
1231
  	@echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
28bc20dcc   Sam Ravnborg   kbuild: implement...
1232
1233
1234
1235
  	@echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
  	@echo  '		1: warnings which may be relevant and do not occur too often'
  	@echo  '		2: warnings which occur quite often but may still be relevant'
  	@echo  '		3: more obscure warnings, can most likely be ignored'
a6de553da   Michal Marek   kbuild: Allow to ...
1236
  	@echo  '		Multiple levels can be combined with W=12 or W=123'
85356f802   Steven Rostedt   kbuild/recordmcou...
1237
  	@echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1238
1239
1240
  	@echo  ''
  	@echo  'Execute "make" or "make all" to build all targets marked with [*] '
  	@echo  'For further info see the ./README file'
5dffbe811   Segher Boessenkool   kbuild: show defc...
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
  help-board-dirs := $(addprefix help-,$(board-dirs))
  
  help-boards: $(help-board-dirs)
  
  boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
  
  $(help-board-dirs): help-%:
  	@echo  'Architecture specific targets ($(SRCARCH) $*):'
  	@$(if $(boards-per-dir), \
  		$(foreach b, $(boards-per-dir), \
  		printf "  %-24s - Build for %s\
  " $*/$(b) $(subst _defconfig,,$(b));) \
  		echo '')
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1254
1255
1256
  # Documentation targets
  # ---------------------------------------------------------------------------
  %docs: scripts_basic FORCE
bffd2020a   Peter Foley   kbuild: move scri...
1257
  	$(Q)$(MAKE) $(build)=scripts build_docproc
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
  	$(Q)$(MAKE) $(build)=Documentation/DocBook $@
  
  else # KBUILD_EXTMOD
  
  ###
  # External module support.
  # When building external modules the kernel used as basis is considered
  # read-only, and no consistency checks are made and the make
  # system is not used on the basis kernel. If updates are required
  # in the basis kernel ordinary make commands (without M=...) must
  # be used.
  #
  # The following are the only valid targets when building external
  # modules.
  # make M=dir clean     Delete all automatically generated files
  # make M=dir modules   Make all modules in specified dir
  # make M=dir	       Same as 'make M=dir modules'
  # make M=dir modules_install
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1276
  #                      Install the modules built in the module directory
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1277
1278
1279
1280
  #                      Assumes install directory is already created
  
  # We are always building modules
  KBUILD_MODULES := 1
4f1933620   Paul Smith   kbuild: change kb...
1281
  PHONY += crmodverdir
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1282
  crmodverdir:
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1283
  	$(cmd_crmodverdir)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1284

4f1933620   Paul Smith   kbuild: change kb...
1285
  PHONY += $(objtree)/Module.symvers
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1286
1287
1288
1289
1290
1291
1292
1293
  $(objtree)/Module.symvers:
  	@test -e $(objtree)/Module.symvers || ( \
  	echo; \
  	echo "  WARNING: Symbol version dump $(objtree)/Module.symvers"; \
  	echo "           is missing; modules will have no dependencies and modversions."; \
  	echo )
  
  module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
4f1933620   Paul Smith   kbuild: change kb...
1294
  PHONY += $(module-dirs) modules
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1295
1296
1297
1298
  $(module-dirs): crmodverdir $(objtree)/Module.symvers
  	$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
  
  modules: $(module-dirs)
fd54f5028   Mike Frysinger   kbuild: use KECHO...
1299
  	@$(kecho) '  Building modules, stage 2.';
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1300
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1301

4f1933620   Paul Smith   kbuild: change kb...
1302
  PHONY += modules_install
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1303
  modules_install: _emodinst_ _emodinst_post
e63046630   Adrian Bunk   kbuild: remove a ...
1304

4f1933620   Paul Smith   kbuild: change kb...
1305
1306
  install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
  PHONY += _emodinst_
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1307
  _emodinst_:
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1308
  	$(Q)mkdir -p $(MODLIB)/$(install-dir)
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1309
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1310

4f1933620   Paul Smith   kbuild: change kb...
1311
  PHONY += _emodinst_post
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1312
1313
  _emodinst_post: _emodinst_
  	$(call cmd,depmod)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1314
  clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
4f1933620   Paul Smith   kbuild: change kb...
1315
  PHONY += $(clean-dirs) clean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1316
1317
1318
1319
  $(clean-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
  
  clean:	rm-dirs := $(MODVERDIR)
88d7be031   Michal Marek   kbuild: Use a sin...
1320
  clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1321
1322
1323
1324
1325
1326
1327
1328
1329
  
  help:
  	@echo  '  Building external modules.'
  	@echo  '  Syntax: make -C path/to/kernel/src M=$$PWD target'
  	@echo  ''
  	@echo  '  modules         - default target, build the module(s)'
  	@echo  '  modules_install - install the module'
  	@echo  '  clean           - remove generated files in module directory only'
  	@echo  ''
06300b21f   Sam Ravnborg   kbuild: support b...
1330
1331
  
  # Dummies...
4f1933620   Paul Smith   kbuild: change kb...
1332
  PHONY += prepare scripts
06300b21f   Sam Ravnborg   kbuild: support b...
1333
1334
  prepare: ;
  scripts: ;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1335
  endif # KBUILD_EXTMOD
88d7be031   Michal Marek   kbuild: Use a sin...
1336
1337
1338
  clean: $(clean-dirs)
  	$(call cmd,rmdirs)
  	$(call cmd,rmfiles)
43f67c981   Kevin Cernekee   kbuild: Fix GNU m...
1339
  	@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
88d7be031   Michal Marek   kbuild: Use a sin...
1340
1341
1342
1343
1344
  		\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
  		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
  		-o -name '*.symtypes' -o -name 'modules.order' \
  		-o -name modules.builtin -o -name '.tmp_*.o.*' \
  		-o -name '*.gcno' \) -type f -print | xargs rm -f
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1345
1346
  # Generate tags for editors
  # ---------------------------------------------------------------------------
a680eedc6   Sam Ravnborg   tags and cscope s...
1347
1348
  quiet_cmd_tags = GEN     $@
        cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1349

f4ed1009f   Jianbin Kang   kbuild: add GNU G...
1350
  tags TAGS cscope gtags: FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1351
  	$(call cmd,tags)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1352
1353
  # Scripts to check various things for consistency
  # ---------------------------------------------------------------------------
279f3dd35   Peter Foley   kbuild: add targe...
1354
  PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1355
  includecheck:
436f876cc   Peter Foley   kbuild: make incl...
1356
  	find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1357
  		-name '*.[hcS]' -type f -print | sort \
800074345   Geert Uytterhoeven   kbuild: Add missi...
1358
  		| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1359
1360
  
  versioncheck:
2ee2d2928   Peter Foley   kbuild: make vers...
1361
  	find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1362
  		-name '*.[hcS]' -type f -print | sort \
800074345   Geert Uytterhoeven   kbuild: Add missi...
1363
  		| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1364

74425eee7   Nicolas Palix   Add a target to u...
1365
1366
  coccicheck:
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1367
1368
  namespacecheck:
  	$(PERL) $(srctree)/scripts/namespace.pl
295ac0518   Adrian Bunk   kbuild: call expo...
1369
1370
  export_report:
  	$(PERL) $(srctree)/scripts/export_report.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1371
1372
  endif #ifeq ($(config-targets),1)
  endif #ifeq ($(mixed-targets),1)
c30a02e02   Roman Zippel   kbuild: `make ker...
1373
  PHONY += checkstack kernelrelease kernelversion
e3ccf6e36   Jeff Dike   [PATCH] uml: add ...
1374

011e3a9ad   Jeff Dike   [PATCH] Fix cross...
1375
1376
1377
1378
1379
1380
1381
1382
1383
  # UML needs a little special treatment here.  It wants to use the host
  # toolchain, so needs $(SUBARCH) passed to checkstack.pl.  Everyone
  # else wants $(ARCH), including people doing cross-builds, which means
  # that $(SUBARCH) doesn't work here.
  ifeq ($(ARCH), um)
  CHECKSTACK_ARCH := $(SUBARCH)
  else
  CHECKSTACK_ARCH := $(ARCH)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1384
1385
  checkstack:
  	$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
011e3a9ad   Jeff Dike   [PATCH] Fix cross...
1386
  	$(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1387

7b8ea53d7   Amerigo Wang   makefile: not nee...
1388
1389
  kernelrelease:
  	@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
01ab17887   Amerigo Wang   Makefile: "make k...
1390

cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
1391
  kernelversion:
2244cbd8a   Sam Ravnborg   kbuild: create .k...
1392
  	@echo $(KERNELVERSION)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1393

06300b21f   Sam Ravnborg   kbuild: support b...
1394
1395
  # Single targets
  # ---------------------------------------------------------------------------
bc2546a67   Sam Ravnborg   kbuild: fix build...
1396
  # Single targets are compatible with:
e1b8513d2   Robert P. J. Day   Typoes: "whith" ...
1397
  # - build with mixed source and output
bc2546a67   Sam Ravnborg   kbuild: fix build...
1398
1399
1400
1401
1402
1403
1404
  # - build with separate output dir 'make O=...'
  # - external modules
  #
  #  target-dir => where to store outputfile
  #  build-dir  => directory in kernel source tree to use
  
  ifeq ($(KBUILD_EXTMOD),)
aa360879e   Sam Ravnborg   kbuild: fix make ...
1405
          build-dir  = $(patsubst %/,%,$(dir $@))
bc2546a67   Sam Ravnborg   kbuild: fix build...
1406
1407
1408
1409
1410
1411
          target-dir = $(dir $@)
  else
          zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
          build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
          target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
  endif
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1412
  %.s: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1413
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1414
  %.i: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1415
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1416
  %.o: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1417
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1418
  %.lst: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1419
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1420
  %.s: %.S prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1421
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1422
  %.o: %.S prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1423
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
15fde6751   Andreas Gruenbacher   kbuild: support f...
1424
1425
  %.symtypes: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
06300b21f   Sam Ravnborg   kbuild: support b...
1426

bc2546a67   Sam Ravnborg   kbuild: fix build...
1427
  # Modules
31110ebbe   Sam Ravnborg   kbuild: fix make ...
1428
1429
1430
1431
1432
  /: prepare scripts FORCE
  	$(cmd_crmodverdir)
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  	$(build)=$(build-dir)
  %/: prepare scripts FORCE
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1433
  	$(cmd_crmodverdir)
06300b21f   Sam Ravnborg   kbuild: support b...
1434
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
bc2546a67   Sam Ravnborg   kbuild: fix build...
1435
1436
  	$(build)=$(build-dir)
  %.ko: prepare scripts FORCE
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1437
  	$(cmd_crmodverdir)
06300b21f   Sam Ravnborg   kbuild: support b...
1438
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
bc2546a67   Sam Ravnborg   kbuild: fix build...
1439
  	$(build)=$(build-dir) $(@:.ko=.o)
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1440
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
06300b21f   Sam Ravnborg   kbuild: support b...
1441

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1442
1443
1444
1445
1446
1447
1448
1449
  # FIXME Should go into a make.lib or something 
  # ===========================================================================
  
  quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
        cmd_rmdirs = rm -rf $(rm-dirs)
  
  quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
        cmd_rmfiles = rm -f $(rm-files)
bc3c26fe6   Uwe Kleine-König   fix typo "is" -> ...
1450
  # Run depmod only if we have System.map and depmod is executable
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1451
  quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)
569658ddd   Michal Marek   kbuild: Call depm...
1452
1453
        cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
                     $(KERNELRELEASE)
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1454

7bb9d092d   Sam Ravnborg   kbuild: fix first...
1455
  # Create temporary dir for module support files
ab19f8794   Sam Ravnborg   kbuild: fix modul...
1456
1457
1458
  # clean it up only when building all modules
  cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
                    $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1459

222d394d3   Sam Ravnborg   kbuild: enable 'm...
1460
  a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
80c00ba94   Sam Ravnborg   kbuild: allow ass...
1461
  	  $(KBUILD_AFLAGS_KERNEL)                              \
d8672b40d   Sam Ravnborg   kbuild: expand -I...
1462
  	  $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \
5e8d780d7   Sam Ravnborg   kbuild: fix ia64 ...
1463
  	  $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
  
  quiet_cmd_as_o_S = AS      $@
  cmd_as_o_S       = $(CC) $(a_flags) -c -o $@ $<
  
  # read all saved command lines
  
  targets := $(wildcard $(sort $(targets)))
  cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
  
  ifneq ($(cmd_files),)
    $(cmd_files): ;	# Do not try to update included dependency files
    include $(cmd_files)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1477
1478
1479
1480
  # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
  # Usage:
  # $(Q)$(MAKE) $(clean)=dir
  clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1481
  endif	# skip-makefile
4f1933620   Paul Smith   kbuild: change kb...
1482
  PHONY += FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1483
  FORCE:
4f1933620   Paul Smith   kbuild: change kb...
1484

4f1933620   Paul Smith   kbuild: change kb...
1485
  # Declare the contents of the .PHONY variable as phony.  We keep that
fe8d0a410   Kirill Smelkov   kbuild: fix a few...
1486
  # information in a variable so we can use it in if_changed and friends.
4f1933620   Paul Smith   kbuild: change kb...
1487
  .PHONY: $(PHONY)