Eric Lee / smarc-fsl-linux-kernel

Download as
Browse Code ยป

Commit 37d9fe4783ffcaddcc4afe67626691e62c5ab30e

Authored by Feng Wu
Committed by Paolo Bonzini
1 parent f73f817312
Exists in smarc_imx_lf-5.15.y and in 27 other branches 8mp-imx_5.4.70_2.3.0, 8qm-imx_5.4.70_2.3.0, emb_imx_lf-5.15.y, emb_lf-6.1.y, pitx_8mp_lf-5.10.y, rt_linux_5.15.71, smarc-8m-android-11.0.0_2.0.0, smarc-imx6_4.14.98_2.0.0_ga, smarc-imx6_4.9.88_2.0.0_ga, smarc-imx7_4.14.98_2.0.0_ga, smarc-imx7_4.9.11_1.0.0_ga, smarc-imx7_4.9.88_2.0.0_ga, smarc-imx_4.9.11_1.0.0_ga, smarc-imx_4.9.51_imx8m_ga, smarc-imx_4.9.88_2.0.0_ga, smarc-n7.1.2_2.0.0-ga, smarc_8m_00d0_imx_4.14.98_2.0.0_ga, smarc_8m_imx_4.14.78_1.0.0_ga, smarc_8m_imx_4.14.98_2.0.0_ga, smarc_8m_imx_4.19.35_1.1.0, smarc_8mm_imx_4.14.78_1.0.0_ga, smarc_8mm_imx_4.14.98_2.0.0_ga, smarc_8mm_imx_4.19.35_1.1.0, smarc_8mm_imx_5.4.24_2.1.0, smarc_8mp_lf-5.10.y, smarc_8mq_imx_5.4.24_2.1.0, smarc_8mq_lf-5.10.y

virt: Add virt directory to the top Makefile 

We need to build files in virt/lib/, which are now used by
KVM and VFIO, so add virt directory to the top Makefile.

Signed-off-by: Feng Wu <feng.wu@intel.com>
Acked-by: Michal Marek <mmarek@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Showing 2 changed files with 7 additions and 4 deletions Inline Diff

1 VERSION = 4 1 VERSION = 4
2 PATCHLEVEL = 3 2 PATCHLEVEL = 3
3 SUBLEVEL = 0 3 SUBLEVEL = 0
4 EXTRAVERSION = -rc3 4 EXTRAVERSION = -rc3
5 NAME = Hurr durr I'ma sheep 5 NAME = Hurr durr I'ma sheep
6 6
7 # *DOCUMENTATION* 7 # *DOCUMENTATION*
8 # To see a list of typical targets execute "make help" 8 # To see a list of typical targets execute "make help"
9 # More info can be located in ./README 9 # More info can be located in ./README
10 # Comments in this file are targeted only to the developer, do not 10 # Comments in this file are targeted only to the developer, do not
11 # expect to learn how to build the kernel reading this file. 11 # expect to learn how to build the kernel reading this file.
12 12
13 # o Do not use make's built-in rules and variables 13 # o Do not use make's built-in rules and variables
14 # (this increases performance and avoids hard-to-debug behaviour); 14 # (this increases performance and avoids hard-to-debug behaviour);
15 # o Look for make include files relative to root of kernel src 15 # o Look for make include files relative to root of kernel src
16 MAKEFLAGS += -rR --include-dir=$(CURDIR) 16 MAKEFLAGS += -rR --include-dir=$(CURDIR)
17 17
18 # Avoid funny character set dependencies 18 # Avoid funny character set dependencies
19 unexport LC_ALL 19 unexport LC_ALL
20 LC_COLLATE=C 20 LC_COLLATE=C
21 LC_NUMERIC=C 21 LC_NUMERIC=C
22 export LC_COLLATE LC_NUMERIC 22 export LC_COLLATE LC_NUMERIC
23 23
24 # Avoid interference with shell env settings 24 # Avoid interference with shell env settings
25 unexport GREP_OPTIONS 25 unexport GREP_OPTIONS
26 26
27 # We are using a recursive build, so we need to do a little thinking 27 # We are using a recursive build, so we need to do a little thinking
28 # to get the ordering right. 28 # to get the ordering right.
29 # 29 #
30 # Most importantly: sub-Makefiles should only ever modify files in 30 # Most importantly: sub-Makefiles should only ever modify files in
31 # their own directory. If in some directory we have a dependency on 31 # their own directory. If in some directory we have a dependency on
32 # a file in another dir (which doesn't happen often, but it's often 32 # a file in another dir (which doesn't happen often, but it's often
33 # unavoidable when linking the built-in.o targets which finally 33 # unavoidable when linking the built-in.o targets which finally
34 # turn into vmlinux), we will call a sub make in that other dir, and 34 # turn into vmlinux), we will call a sub make in that other dir, and
35 # after that we are sure that everything which is in that other dir 35 # after that we are sure that everything which is in that other dir
36 # is now up to date. 36 # is now up to date.
37 # 37 #
38 # The only cases where we need to modify files which have global 38 # The only cases where we need to modify files which have global
39 # effects are thus separated out and done before the recursive 39 # effects are thus separated out and done before the recursive
40 # descending is started. They are now explicitly listed as the 40 # descending is started. They are now explicitly listed as the
41 # prepare rule. 41 # prepare rule.
42 42
43 # Beautify output 43 # Beautify output
44 # --------------------------------------------------------------------------- 44 # ---------------------------------------------------------------------------
45 # 45 #
46 # Normally, we echo the whole command before executing it. By making 46 # Normally, we echo the whole command before executing it. By making
47 # that echo $($(quiet)$(cmd)), we now have the possibility to set 47 # that echo $($(quiet)$(cmd)), we now have the possibility to set
48 # $(quiet) to choose other forms of output instead, e.g. 48 # $(quiet) to choose other forms of output instead, e.g.
49 # 49 #
50 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 50 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
51 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 51 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
52 # 52 #
53 # If $(quiet) is empty, the whole command will be printed. 53 # If $(quiet) is empty, the whole command will be printed.
54 # If it is set to "quiet_", only the short version will be printed. 54 # If it is set to "quiet_", only the short version will be printed.
55 # If it is set to "silent_", nothing will be printed at all, since 55 # If it is set to "silent_", nothing will be printed at all, since
56 # the variable $(silent_cmd_cc_o_c) doesn't exist. 56 # the variable $(silent_cmd_cc_o_c) doesn't exist.
57 # 57 #
58 # A simple variant is to prefix commands with $(Q) - that's useful 58 # A simple variant is to prefix commands with $(Q) - that's useful
59 # for commands that shall be hidden in non-verbose mode. 59 # for commands that shall be hidden in non-verbose mode.
60 # 60 #
61 # $(Q)ln $@ :< 61 # $(Q)ln $@ :<
62 # 62 #
63 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 63 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
64 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 64 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
65 # 65 #
66 # To put more focus on warnings, be less verbose as default 66 # To put more focus on warnings, be less verbose as default
67 # Use 'make V=1' to see the full commands 67 # Use 'make V=1' to see the full commands
68 68
69 ifeq ("$(origin V)", "command line") 69 ifeq ("$(origin V)", "command line")
70 KBUILD_VERBOSE = $(V) 70 KBUILD_VERBOSE = $(V)
71 endif 71 endif
72 ifndef KBUILD_VERBOSE 72 ifndef KBUILD_VERBOSE
73 KBUILD_VERBOSE = 0 73 KBUILD_VERBOSE = 0
74 endif 74 endif
75 75
76 ifeq ($(KBUILD_VERBOSE),1) 76 ifeq ($(KBUILD_VERBOSE),1)
77 quiet = 77 quiet =
78 Q = 78 Q =
79 else 79 else
80 quiet=quiet_ 80 quiet=quiet_
81 Q = @ 81 Q = @
82 endif 82 endif
83 83
84 # If the user is running make -s (silent mode), suppress echoing of 84 # If the user is running make -s (silent mode), suppress echoing of
85 # commands 85 # commands
86 86
87 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 87 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
88 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 88 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
89 quiet=silent_ 89 quiet=silent_
90 endif 90 endif
91 else # make-3.8x 91 else # make-3.8x
92 ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 92 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
93 quiet=silent_ 93 quiet=silent_
94 endif 94 endif
95 endif 95 endif
96 96
97 export quiet Q KBUILD_VERBOSE 97 export quiet Q KBUILD_VERBOSE
98 98
99 # kbuild supports saving output files in a separate directory. 99 # kbuild supports saving output files in a separate directory.
100 # To locate output files in a separate directory two syntaxes are supported. 100 # To locate output files in a separate directory two syntaxes are supported.
101 # In both cases the working directory must be the root of the kernel src. 101 # In both cases the working directory must be the root of the kernel src.
102 # 1) O= 102 # 1) O=
103 # Use "make O=dir/to/store/output/files/" 103 # Use "make O=dir/to/store/output/files/"
104 # 104 #
105 # 2) Set KBUILD_OUTPUT 105 # 2) Set KBUILD_OUTPUT
106 # Set the environment variable KBUILD_OUTPUT to point to the directory 106 # Set the environment variable KBUILD_OUTPUT to point to the directory
107 # where the output files shall be placed. 107 # where the output files shall be placed.
108 # export KBUILD_OUTPUT=dir/to/store/output/files/ 108 # export KBUILD_OUTPUT=dir/to/store/output/files/
109 # make 109 # make
110 # 110 #
111 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 111 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
112 # variable. 112 # variable.
113 113
114 # KBUILD_SRC is set on invocation of make in OBJ directory 114 # KBUILD_SRC is set on invocation of make in OBJ directory
115 # KBUILD_SRC is not intended to be used by the regular user (for now) 115 # KBUILD_SRC is not intended to be used by the regular user (for now)
116 ifeq ($(KBUILD_SRC),) 116 ifeq ($(KBUILD_SRC),)
117 117
118 # OK, Make called in directory where kernel src resides 118 # OK, Make called in directory where kernel src resides
119 # Do we want to locate output files in a separate directory? 119 # Do we want to locate output files in a separate directory?
120 ifeq ("$(origin O)", "command line") 120 ifeq ("$(origin O)", "command line")
121 KBUILD_OUTPUT := $(O) 121 KBUILD_OUTPUT := $(O)
122 endif 122 endif
123 123
124 # That's our default target when none is given on the command line 124 # That's our default target when none is given on the command line
125 PHONY := _all 125 PHONY := _all
126 _all: 126 _all:
127 127
128 # Cancel implicit rules on top Makefile 128 # Cancel implicit rules on top Makefile
129 $(CURDIR)/Makefile Makefile: ; 129 $(CURDIR)/Makefile Makefile: ;
130 130
131 ifneq ($(KBUILD_OUTPUT),) 131 ifneq ($(KBUILD_OUTPUT),)
132 # Invoke a second make in the output directory, passing relevant variables 132 # Invoke a second make in the output directory, passing relevant variables
133 # check that the output directory actually exists 133 # check that the output directory actually exists
134 saved-output := $(KBUILD_OUTPUT) 134 saved-output := $(KBUILD_OUTPUT)
135 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 135 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
136 && /bin/pwd) 136 && /bin/pwd)
137 $(if $(KBUILD_OUTPUT),, \ 137 $(if $(KBUILD_OUTPUT),, \
138 $(error failed to create output directory "$(saved-output)")) 138 $(error failed to create output directory "$(saved-output)"))
139 139
140 PHONY += $(MAKECMDGOALS) sub-make 140 PHONY += $(MAKECMDGOALS) sub-make
141 141
142 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 142 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
143 @: 143 @:
144 144
145 sub-make: FORCE 145 sub-make: FORCE
146 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 146 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
147 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 147 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
148 148
149 # Leave processing to above invocation of make 149 # Leave processing to above invocation of make
150 skip-makefile := 1 150 skip-makefile := 1
151 endif # ifneq ($(KBUILD_OUTPUT),) 151 endif # ifneq ($(KBUILD_OUTPUT),)
152 endif # ifeq ($(KBUILD_SRC),) 152 endif # ifeq ($(KBUILD_SRC),)
153 153
154 # We process the rest of the Makefile if this is the final invocation of make 154 # We process the rest of the Makefile if this is the final invocation of make
155 ifeq ($(skip-makefile),) 155 ifeq ($(skip-makefile),)
156 156
157 # Do not print "Entering directory ...", 157 # Do not print "Entering directory ...",
158 # but we want to display it when entering to the output directory 158 # but we want to display it when entering to the output directory
159 # so that IDEs/editors are able to understand relative filenames. 159 # so that IDEs/editors are able to understand relative filenames.
160 MAKEFLAGS += --no-print-directory 160 MAKEFLAGS += --no-print-directory
161 161
162 # Call a source code checker (by default, "sparse") as part of the 162 # Call a source code checker (by default, "sparse") as part of the
163 # C compilation. 163 # C compilation.
164 # 164 #
165 # Use 'make C=1' to enable checking of only re-compiled files. 165 # Use 'make C=1' to enable checking of only re-compiled files.
166 # Use 'make C=2' to enable checking of *all* source files, regardless 166 # Use 'make C=2' to enable checking of *all* source files, regardless
167 # of whether they are re-compiled or not. 167 # of whether they are re-compiled or not.
168 # 168 #
169 # See the file "Documentation/sparse.txt" for more details, including 169 # See the file "Documentation/sparse.txt" for more details, including
170 # where to get the "sparse" utility. 170 # where to get the "sparse" utility.
171 171
172 ifeq ("$(origin C)", "command line") 172 ifeq ("$(origin C)", "command line")
173 KBUILD_CHECKSRC = $(C) 173 KBUILD_CHECKSRC = $(C)
174 endif 174 endif
175 ifndef KBUILD_CHECKSRC 175 ifndef KBUILD_CHECKSRC
176 KBUILD_CHECKSRC = 0 176 KBUILD_CHECKSRC = 0
177 endif 177 endif
178 178
179 # Use make M=dir to specify directory of external module to build 179 # Use make M=dir to specify directory of external module to build
180 # Old syntax make ... SUBDIRS=$PWD is still supported 180 # Old syntax make ... SUBDIRS=$PWD is still supported
181 # Setting the environment variable KBUILD_EXTMOD take precedence 181 # Setting the environment variable KBUILD_EXTMOD take precedence
182 ifdef SUBDIRS 182 ifdef SUBDIRS
183 KBUILD_EXTMOD ?= $(SUBDIRS) 183 KBUILD_EXTMOD ?= $(SUBDIRS)
184 endif 184 endif
185 185
186 ifeq ("$(origin M)", "command line") 186 ifeq ("$(origin M)", "command line")
187 KBUILD_EXTMOD := $(M) 187 KBUILD_EXTMOD := $(M)
188 endif 188 endif
189 189
190 # If building an external module we do not care about the all: rule 190 # If building an external module we do not care about the all: rule
191 # but instead _all depend on modules 191 # but instead _all depend on modules
192 PHONY += all 192 PHONY += all
193 ifeq ($(KBUILD_EXTMOD),) 193 ifeq ($(KBUILD_EXTMOD),)
194 _all: all 194 _all: all
195 else 195 else
196 _all: modules 196 _all: modules
197 endif 197 endif
198 198
199 ifeq ($(KBUILD_SRC),) 199 ifeq ($(KBUILD_SRC),)
200 # building in the source tree 200 # building in the source tree
201 srctree := . 201 srctree := .
202 else 202 else
203 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 203 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
204 # building in a subdirectory of the source tree 204 # building in a subdirectory of the source tree
205 srctree := .. 205 srctree := ..
206 else 206 else
207 srctree := $(KBUILD_SRC) 207 srctree := $(KBUILD_SRC)
208 endif 208 endif
209 endif 209 endif
210 objtree := . 210 objtree := .
211 src := $(srctree) 211 src := $(srctree)
212 obj := $(objtree) 212 obj := $(objtree)
213 213
214 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 214 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
215 215
216 export srctree objtree VPATH 216 export srctree objtree VPATH
217 217
218 # SUBARCH tells the usermode build what the underlying arch is. That is set 218 # SUBARCH tells the usermode build what the underlying arch is. That is set
219 # first, and if a usermode build is happening, the "ARCH=um" on the command 219 # first, and if a usermode build is happening, the "ARCH=um" on the command
220 # line overrides the setting of ARCH below. If a native build is happening, 220 # line overrides the setting of ARCH below. If a native build is happening,
221 # then ARCH is assigned, getting whatever value it gets normally, and 221 # then ARCH is assigned, getting whatever value it gets normally, and
222 # SUBARCH is subsequently ignored. 222 # SUBARCH is subsequently ignored.
223 223
224 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 224 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
225 -e s/sun4u/sparc64/ \ 225 -e s/sun4u/sparc64/ \
226 -e s/arm.*/arm/ -e s/sa110/arm/ \ 226 -e s/arm.*/arm/ -e s/sa110/arm/ \
227 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 227 -e s/s390x/s390/ -e s/parisc64/parisc/ \
228 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 228 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
229 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) 229 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
230 230
231 # Cross compiling and selecting different set of gcc/bin-utils 231 # Cross compiling and selecting different set of gcc/bin-utils
232 # --------------------------------------------------------------------------- 232 # ---------------------------------------------------------------------------
233 # 233 #
234 # When performing cross compilation for other architectures ARCH shall be set 234 # When performing cross compilation for other architectures ARCH shall be set
235 # to the target architecture. (See arch/* for the possibilities). 235 # to the target architecture. (See arch/* for the possibilities).
236 # ARCH can be set during invocation of make: 236 # ARCH can be set during invocation of make:
237 # make ARCH=ia64 237 # make ARCH=ia64
238 # Another way is to have ARCH set in the environment. 238 # Another way is to have ARCH set in the environment.
239 # The default ARCH is the host where make is executed. 239 # The default ARCH is the host where make is executed.
240 240
241 # CROSS_COMPILE specify the prefix used for all executables used 241 # CROSS_COMPILE specify the prefix used for all executables used
242 # during compilation. Only gcc and related bin-utils executables 242 # during compilation. Only gcc and related bin-utils executables
243 # are prefixed with $(CROSS_COMPILE). 243 # are prefixed with $(CROSS_COMPILE).
244 # CROSS_COMPILE can be set on the command line 244 # CROSS_COMPILE can be set on the command line
245 # make CROSS_COMPILE=ia64-linux- 245 # make CROSS_COMPILE=ia64-linux-
246 # Alternatively CROSS_COMPILE can be set in the environment. 246 # Alternatively CROSS_COMPILE can be set in the environment.
247 # A third alternative is to store a setting in .config so that plain 247 # A third alternative is to store a setting in .config so that plain
248 # "make" in the configured kernel build directory always uses that. 248 # "make" in the configured kernel build directory always uses that.
249 # Default value for CROSS_COMPILE is not to prefix executables 249 # Default value for CROSS_COMPILE is not to prefix executables
250 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 250 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
251 ARCH ?= $(SUBARCH) 251 ARCH ?= $(SUBARCH)
252 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 252 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
253 253
254 # Architecture as present in compile.h 254 # Architecture as present in compile.h
255 UTS_MACHINE := $(ARCH) 255 UTS_MACHINE := $(ARCH)
256 SRCARCH := $(ARCH) 256 SRCARCH := $(ARCH)
257 257
258 # Additional ARCH settings for x86 258 # Additional ARCH settings for x86
259 ifeq ($(ARCH),i386) 259 ifeq ($(ARCH),i386)
260 SRCARCH := x86 260 SRCARCH := x86
261 endif 261 endif
262 ifeq ($(ARCH),x86_64) 262 ifeq ($(ARCH),x86_64)
263 SRCARCH := x86 263 SRCARCH := x86
264 endif 264 endif
265 265
266 # Additional ARCH settings for sparc 266 # Additional ARCH settings for sparc
267 ifeq ($(ARCH),sparc32) 267 ifeq ($(ARCH),sparc32)
268 SRCARCH := sparc 268 SRCARCH := sparc
269 endif 269 endif
270 ifeq ($(ARCH),sparc64) 270 ifeq ($(ARCH),sparc64)
271 SRCARCH := sparc 271 SRCARCH := sparc
272 endif 272 endif
273 273
274 # Additional ARCH settings for sh 274 # Additional ARCH settings for sh
275 ifeq ($(ARCH),sh64) 275 ifeq ($(ARCH),sh64)
276 SRCARCH := sh 276 SRCARCH := sh
277 endif 277 endif
278 278
279 # Additional ARCH settings for tile 279 # Additional ARCH settings for tile
280 ifeq ($(ARCH),tilepro) 280 ifeq ($(ARCH),tilepro)
281 SRCARCH := tile 281 SRCARCH := tile
282 endif 282 endif
283 ifeq ($(ARCH),tilegx) 283 ifeq ($(ARCH),tilegx)
284 SRCARCH := tile 284 SRCARCH := tile
285 endif 285 endif
286 286
287 # Where to locate arch specific headers 287 # Where to locate arch specific headers
288 hdr-arch := $(SRCARCH) 288 hdr-arch := $(SRCARCH)
289 289
290 KCONFIG_CONFIG ?= .config 290 KCONFIG_CONFIG ?= .config
291 export KCONFIG_CONFIG 291 export KCONFIG_CONFIG
292 292
293 # SHELL used by kbuild 293 # SHELL used by kbuild
294 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 294 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
295 else if [ -x /bin/bash ]; then echo /bin/bash; \ 295 else if [ -x /bin/bash ]; then echo /bin/bash; \
296 else echo sh; fi ; fi) 296 else echo sh; fi ; fi)
297 297
298 HOSTCC = gcc 298 HOSTCC = gcc
299 HOSTCXX = g++ 299 HOSTCXX = g++
300 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 300 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89
301 HOSTCXXFLAGS = -O2 301 HOSTCXXFLAGS = -O2
302 302
303 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) 303 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
304 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ 304 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
305 -Wno-missing-field-initializers -fno-delete-null-pointer-checks 305 -Wno-missing-field-initializers -fno-delete-null-pointer-checks
306 endif 306 endif
307 307
308 # Decide whether to build built-in, modular, or both. 308 # Decide whether to build built-in, modular, or both.
309 # Normally, just do built-in. 309 # Normally, just do built-in.
310 310
311 KBUILD_MODULES := 311 KBUILD_MODULES :=
312 KBUILD_BUILTIN := 1 312 KBUILD_BUILTIN := 1
313 313
314 # If we have only "make modules", don't compile built-in objects. 314 # If we have only "make modules", don't compile built-in objects.
315 # When we're building modules with modversions, we need to consider 315 # When we're building modules with modversions, we need to consider
316 # the built-in objects during the descend as well, in order to 316 # the built-in objects during the descend as well, in order to
317 # make sure the checksums are up to date before we record them. 317 # make sure the checksums are up to date before we record them.
318 318
319 ifeq ($(MAKECMDGOALS),modules) 319 ifeq ($(MAKECMDGOALS),modules)
320 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 320 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
321 endif 321 endif
322 322
323 # If we have "make <whatever> modules", compile modules 323 # If we have "make <whatever> modules", compile modules
324 # in addition to whatever we do anyway. 324 # in addition to whatever we do anyway.
325 # Just "make" or "make all" shall build modules as well 325 # Just "make" or "make all" shall build modules as well
326 326
327 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 327 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
328 KBUILD_MODULES := 1 328 KBUILD_MODULES := 1
329 endif 329 endif
330 330
331 ifeq ($(MAKECMDGOALS),) 331 ifeq ($(MAKECMDGOALS),)
332 KBUILD_MODULES := 1 332 KBUILD_MODULES := 1
333 endif 333 endif
334 334
335 export KBUILD_MODULES KBUILD_BUILTIN 335 export KBUILD_MODULES KBUILD_BUILTIN
336 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 336 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
337 337
338 # We need some generic definitions (do not try to remake the file). 338 # We need some generic definitions (do not try to remake the file).
339 scripts/Kbuild.include: ; 339 scripts/Kbuild.include: ;
340 include scripts/Kbuild.include 340 include scripts/Kbuild.include
341 341
342 # Make variables (CC, etc...) 342 # Make variables (CC, etc...)
343 AS = $(CROSS_COMPILE)as 343 AS = $(CROSS_COMPILE)as
344 LD = $(CROSS_COMPILE)ld 344 LD = $(CROSS_COMPILE)ld
345 CC = $(CROSS_COMPILE)gcc 345 CC = $(CROSS_COMPILE)gcc
346 CPP = $(CC) -E 346 CPP = $(CC) -E
347 AR = $(CROSS_COMPILE)ar 347 AR = $(CROSS_COMPILE)ar
348 NM = $(CROSS_COMPILE)nm 348 NM = $(CROSS_COMPILE)nm
349 STRIP = $(CROSS_COMPILE)strip 349 STRIP = $(CROSS_COMPILE)strip
350 OBJCOPY = $(CROSS_COMPILE)objcopy 350 OBJCOPY = $(CROSS_COMPILE)objcopy
351 OBJDUMP = $(CROSS_COMPILE)objdump 351 OBJDUMP = $(CROSS_COMPILE)objdump
352 AWK = awk 352 AWK = awk
353 GENKSYMS = scripts/genksyms/genksyms 353 GENKSYMS = scripts/genksyms/genksyms
354 INSTALLKERNEL := installkernel 354 INSTALLKERNEL := installkernel
355 DEPMOD = /sbin/depmod 355 DEPMOD = /sbin/depmod
356 PERL = perl 356 PERL = perl
357 PYTHON = python 357 PYTHON = python
358 CHECK = sparse 358 CHECK = sparse
359 359
360 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 360 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
361 -Wbitwise -Wno-return-void $(CF) 361 -Wbitwise -Wno-return-void $(CF)
362 CFLAGS_MODULE = 362 CFLAGS_MODULE =
363 AFLAGS_MODULE = 363 AFLAGS_MODULE =
364 LDFLAGS_MODULE = 364 LDFLAGS_MODULE =
365 CFLAGS_KERNEL = 365 CFLAGS_KERNEL =
366 AFLAGS_KERNEL = 366 AFLAGS_KERNEL =
367 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage 367 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
368 368
369 369
370 # Use USERINCLUDE when you must reference the UAPI directories only. 370 # Use USERINCLUDE when you must reference the UAPI directories only.
371 USERINCLUDE := \ 371 USERINCLUDE := \
372 -I$(srctree)/arch/$(hdr-arch)/include/uapi \ 372 -I$(srctree)/arch/$(hdr-arch)/include/uapi \
373 -Iarch/$(hdr-arch)/include/generated/uapi \ 373 -Iarch/$(hdr-arch)/include/generated/uapi \
374 -I$(srctree)/include/uapi \ 374 -I$(srctree)/include/uapi \
375 -Iinclude/generated/uapi \ 375 -Iinclude/generated/uapi \
376 -include $(srctree)/include/linux/kconfig.h 376 -include $(srctree)/include/linux/kconfig.h
377 377
378 # Use LINUXINCLUDE when you must reference the include/ directory. 378 # Use LINUXINCLUDE when you must reference the include/ directory.
379 # Needed to be compatible with the O= option 379 # Needed to be compatible with the O= option
380 LINUXINCLUDE := \ 380 LINUXINCLUDE := \
381 -I$(srctree)/arch/$(hdr-arch)/include \ 381 -I$(srctree)/arch/$(hdr-arch)/include \
382 -Iarch/$(hdr-arch)/include/generated/uapi \ 382 -Iarch/$(hdr-arch)/include/generated/uapi \
383 -Iarch/$(hdr-arch)/include/generated \ 383 -Iarch/$(hdr-arch)/include/generated \
384 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 384 $(if $(KBUILD_SRC), -I$(srctree)/include) \
385 -Iinclude \ 385 -Iinclude \
386 $(USERINCLUDE) 386 $(USERINCLUDE)
387 387
388 KBUILD_CPPFLAGS := -D__KERNEL__ 388 KBUILD_CPPFLAGS := -D__KERNEL__
389 389
390 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 390 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
391 -fno-strict-aliasing -fno-common \ 391 -fno-strict-aliasing -fno-common \
392 -Werror-implicit-function-declaration \ 392 -Werror-implicit-function-declaration \
393 -Wno-format-security \ 393 -Wno-format-security \
394 -std=gnu89 394 -std=gnu89
395 395
396 KBUILD_AFLAGS_KERNEL := 396 KBUILD_AFLAGS_KERNEL :=
397 KBUILD_CFLAGS_KERNEL := 397 KBUILD_CFLAGS_KERNEL :=
398 KBUILD_AFLAGS := -D__ASSEMBLY__ 398 KBUILD_AFLAGS := -D__ASSEMBLY__
399 KBUILD_AFLAGS_MODULE := -DMODULE 399 KBUILD_AFLAGS_MODULE := -DMODULE
400 KBUILD_CFLAGS_MODULE := -DMODULE 400 KBUILD_CFLAGS_MODULE := -DMODULE
401 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 401 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
402 402
403 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 403 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
404 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 404 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
405 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 405 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
406 406
407 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 407 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
408 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 408 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
409 export CPP AR NM STRIP OBJCOPY OBJDUMP 409 export CPP AR NM STRIP OBJCOPY OBJDUMP
410 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE 410 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
411 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 411 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
412 412
413 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 413 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
414 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KASAN 414 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KASAN
415 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 415 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
416 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 416 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
417 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 417 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
418 export KBUILD_ARFLAGS 418 export KBUILD_ARFLAGS
419 419
420 # When compiling out-of-tree modules, put MODVERDIR in the module 420 # When compiling out-of-tree modules, put MODVERDIR in the module
421 # tree rather than in the kernel tree. The kernel tree might 421 # tree rather than in the kernel tree. The kernel tree might
422 # even be read-only. 422 # even be read-only.
423 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 423 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
424 424
425 # Files to ignore in find ... statements 425 # Files to ignore in find ... statements
426 426
427 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 427 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
428 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 428 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
429 -prune -o 429 -prune -o
430 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 430 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
431 --exclude CVS --exclude .pc --exclude .hg --exclude .git 431 --exclude CVS --exclude .pc --exclude .hg --exclude .git
432 432
433 # =========================================================================== 433 # ===========================================================================
434 # Rules shared between *config targets and build targets 434 # Rules shared between *config targets and build targets
435 435
436 # Basic helpers built in scripts/ 436 # Basic helpers built in scripts/
437 PHONY += scripts_basic 437 PHONY += scripts_basic
438 scripts_basic: 438 scripts_basic:
439 $(Q)$(MAKE) $(build)=scripts/basic 439 $(Q)$(MAKE) $(build)=scripts/basic
440 $(Q)rm -f .tmp_quiet_recordmcount 440 $(Q)rm -f .tmp_quiet_recordmcount
441 441
442 # To avoid any implicit rule to kick in, define an empty command. 442 # To avoid any implicit rule to kick in, define an empty command.
443 scripts/basic/%: scripts_basic ; 443 scripts/basic/%: scripts_basic ;
444 444
445 PHONY += outputmakefile 445 PHONY += outputmakefile
446 # outputmakefile generates a Makefile in the output directory, if using a 446 # outputmakefile generates a Makefile in the output directory, if using a
447 # separate output directory. This allows convenient use of make in the 447 # separate output directory. This allows convenient use of make in the
448 # output directory. 448 # output directory.
449 outputmakefile: 449 outputmakefile:
450 ifneq ($(KBUILD_SRC),) 450 ifneq ($(KBUILD_SRC),)
451 $(Q)ln -fsn $(srctree) source 451 $(Q)ln -fsn $(srctree) source
452 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 452 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
453 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 453 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
454 endif 454 endif
455 455
456 # Support for using generic headers in asm-generic 456 # Support for using generic headers in asm-generic
457 PHONY += asm-generic 457 PHONY += asm-generic
458 asm-generic: 458 asm-generic:
459 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 459 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
460 src=asm obj=arch/$(SRCARCH)/include/generated/asm 460 src=asm obj=arch/$(SRCARCH)/include/generated/asm
461 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 461 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
462 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm 462 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
463 463
464 # To make sure we do not include .config for any of the *config targets 464 # To make sure we do not include .config for any of the *config targets
465 # catch them early, and hand them over to scripts/kconfig/Makefile 465 # catch them early, and hand them over to scripts/kconfig/Makefile
466 # It is allowed to specify more targets when calling make, including 466 # It is allowed to specify more targets when calling make, including
467 # mixing *config targets and build targets. 467 # mixing *config targets and build targets.
468 # For example 'make oldconfig all'. 468 # For example 'make oldconfig all'.
469 # Detect when mixed targets is specified, and make a second invocation 469 # Detect when mixed targets is specified, and make a second invocation
470 # of make so .config is not included in this case either (for *config). 470 # of make so .config is not included in this case either (for *config).
471 471
472 version_h := include/generated/uapi/linux/version.h 472 version_h := include/generated/uapi/linux/version.h
473 old_version_h := include/linux/version.h 473 old_version_h := include/linux/version.h
474 474
475 no-dot-config-targets := clean mrproper distclean \ 475 no-dot-config-targets := clean mrproper distclean \
476 cscope gtags TAGS tags help% %docs check% coccicheck \ 476 cscope gtags TAGS tags help% %docs check% coccicheck \
477 $(version_h) headers_% archheaders archscripts \ 477 $(version_h) headers_% archheaders archscripts \
478 kernelversion %src-pkg 478 kernelversion %src-pkg
479 479
480 config-targets := 0 480 config-targets := 0
481 mixed-targets := 0 481 mixed-targets := 0
482 dot-config := 1 482 dot-config := 1
483 483
484 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 484 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
485 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 485 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
486 dot-config := 0 486 dot-config := 0
487 endif 487 endif
488 endif 488 endif
489 489
490 ifeq ($(KBUILD_EXTMOD),) 490 ifeq ($(KBUILD_EXTMOD),)
491 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 491 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
492 config-targets := 1 492 config-targets := 1
493 ifneq ($(words $(MAKECMDGOALS)),1) 493 ifneq ($(words $(MAKECMDGOALS)),1)
494 mixed-targets := 1 494 mixed-targets := 1
495 endif 495 endif
496 endif 496 endif
497 endif 497 endif
498 498
499 ifeq ($(mixed-targets),1) 499 ifeq ($(mixed-targets),1)
500 # =========================================================================== 500 # ===========================================================================
501 # We're called with mixed targets (*config and build targets). 501 # We're called with mixed targets (*config and build targets).
502 # Handle them one by one. 502 # Handle them one by one.
503 503
504 PHONY += $(MAKECMDGOALS) __build_one_by_one 504 PHONY += $(MAKECMDGOALS) __build_one_by_one
505 505
506 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 506 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
507 @: 507 @:
508 508
509 __build_one_by_one: 509 __build_one_by_one:
510 $(Q)set -e; \ 510 $(Q)set -e; \
511 for i in $(MAKECMDGOALS); do \ 511 for i in $(MAKECMDGOALS); do \
512 $(MAKE) -f $(srctree)/Makefile $$i; \ 512 $(MAKE) -f $(srctree)/Makefile $$i; \
513 done 513 done
514 514
515 else 515 else
516 ifeq ($(config-targets),1) 516 ifeq ($(config-targets),1)
517 # =========================================================================== 517 # ===========================================================================
518 # *config targets only - make sure prerequisites are updated, and descend 518 # *config targets only - make sure prerequisites are updated, and descend
519 # in scripts/kconfig to make the *config target 519 # in scripts/kconfig to make the *config target
520 520
521 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 521 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
522 # KBUILD_DEFCONFIG may point out an alternative default configuration 522 # KBUILD_DEFCONFIG may point out an alternative default configuration
523 # used for 'make defconfig' 523 # used for 'make defconfig'
524 include arch/$(SRCARCH)/Makefile 524 include arch/$(SRCARCH)/Makefile
525 export KBUILD_DEFCONFIG KBUILD_KCONFIG 525 export KBUILD_DEFCONFIG KBUILD_KCONFIG
526 526
527 config: scripts_basic outputmakefile FORCE 527 config: scripts_basic outputmakefile FORCE
528 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 528 $(Q)$(MAKE) $(build)=scripts/kconfig $@
529 529
530 %config: scripts_basic outputmakefile FORCE 530 %config: scripts_basic outputmakefile FORCE
531 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 531 $(Q)$(MAKE) $(build)=scripts/kconfig $@
532 532
533 else 533 else
534 # =========================================================================== 534 # ===========================================================================
535 # Build targets only - this includes vmlinux, arch specific targets, clean 535 # Build targets only - this includes vmlinux, arch specific targets, clean
536 # targets and others. In general all targets except *config targets. 536 # targets and others. In general all targets except *config targets.
537 537
538 ifeq ($(KBUILD_EXTMOD),) 538 ifeq ($(KBUILD_EXTMOD),)
539 # Additional helpers built in scripts/ 539 # Additional helpers built in scripts/
540 # Carefully list dependencies so we do not try to build scripts twice 540 # Carefully list dependencies so we do not try to build scripts twice
541 # in parallel 541 # in parallel
542 PHONY += scripts 542 PHONY += scripts
543 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ 543 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
544 asm-generic 544 asm-generic
545 $(Q)$(MAKE) $(build)=$(@) 545 $(Q)$(MAKE) $(build)=$(@)
546 546
547 # Objects we will link into vmlinux / subdirs we need to visit 547 # Objects we will link into vmlinux / subdirs we need to visit
548 init-y := init/ 548 init-y := init/
549 drivers-y := drivers/ sound/ firmware/ 549 drivers-y := drivers/ sound/ firmware/
550 net-y := net/ 550 net-y := net/
551 libs-y := lib/ 551 libs-y := lib/
552 core-y := usr/ 552 core-y := usr/
553 virt-y := virt/
553 endif # KBUILD_EXTMOD 554 endif # KBUILD_EXTMOD
554 555
555 ifeq ($(dot-config),1) 556 ifeq ($(dot-config),1)
556 # Read in config 557 # Read in config
557 -include include/config/auto.conf 558 -include include/config/auto.conf
558 559
559 ifeq ($(KBUILD_EXTMOD),) 560 ifeq ($(KBUILD_EXTMOD),)
560 # Read in dependencies to all Kconfig* files, make sure to run 561 # Read in dependencies to all Kconfig* files, make sure to run
561 # oldconfig if changes are detected. 562 # oldconfig if changes are detected.
562 -include include/config/auto.conf.cmd 563 -include include/config/auto.conf.cmd
563 564
564 # To avoid any implicit rule to kick in, define an empty command 565 # To avoid any implicit rule to kick in, define an empty command
565 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 566 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
566 567
567 # If .config is newer than include/config/auto.conf, someone tinkered 568 # If .config is newer than include/config/auto.conf, someone tinkered
568 # with it and forgot to run make oldconfig. 569 # with it and forgot to run make oldconfig.
569 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 570 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
570 # we execute the config step to be sure to catch updated Kconfig files 571 # we execute the config step to be sure to catch updated Kconfig files
571 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 572 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
572 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 573 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
573 else 574 else
574 # external modules needs include/generated/autoconf.h and include/config/auto.conf 575 # external modules needs include/generated/autoconf.h and include/config/auto.conf
575 # but do not care if they are up-to-date. Use auto.conf to trigger the test 576 # but do not care if they are up-to-date. Use auto.conf to trigger the test
576 PHONY += include/config/auto.conf 577 PHONY += include/config/auto.conf
577 578
578 include/config/auto.conf: 579 include/config/auto.conf:
579 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 580 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
580 echo >&2; \ 581 echo >&2; \
581 echo >&2 " ERROR: Kernel configuration is invalid."; \ 582 echo >&2 " ERROR: Kernel configuration is invalid."; \
582 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 583 echo >&2 " include/generated/autoconf.h or $@ are missing.";\
583 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 584 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
584 echo >&2 ; \ 585 echo >&2 ; \
585 /bin/false) 586 /bin/false)
586 587
587 endif # KBUILD_EXTMOD 588 endif # KBUILD_EXTMOD
588 589
589 else 590 else
590 # Dummy target needed, because used as prerequisite 591 # Dummy target needed, because used as prerequisite
591 include/config/auto.conf: ; 592 include/config/auto.conf: ;
592 endif # $(dot-config) 593 endif # $(dot-config)
593 594
594 # The all: target is the default when no target is given on the 595 # The all: target is the default when no target is given on the
595 # command line. 596 # command line.
596 # This allow a user to issue only 'make' to build a kernel including modules 597 # This allow a user to issue only 'make' to build a kernel including modules
597 # Defaults to vmlinux, but the arch makefile usually adds further targets 598 # Defaults to vmlinux, but the arch makefile usually adds further targets
598 all: vmlinux 599 all: vmlinux
599 600
600 # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default 601 # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
601 # values of the respective KBUILD_* variables 602 # values of the respective KBUILD_* variables
602 ARCH_CPPFLAGS := 603 ARCH_CPPFLAGS :=
603 ARCH_AFLAGS := 604 ARCH_AFLAGS :=
604 ARCH_CFLAGS := 605 ARCH_CFLAGS :=
605 include arch/$(SRCARCH)/Makefile 606 include arch/$(SRCARCH)/Makefile
606 607
607 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 608 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
608 609
609 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 610 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
610 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) 611 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
611 else 612 else
612 KBUILD_CFLAGS += -O2 613 KBUILD_CFLAGS += -O2
613 endif 614 endif
614 615
615 # Tell gcc to never replace conditional load with a non-conditional one 616 # Tell gcc to never replace conditional load with a non-conditional one
616 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 617 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
617 618
618 ifdef CONFIG_READABLE_ASM 619 ifdef CONFIG_READABLE_ASM
619 # Disable optimizations that make assembler listings hard to read. 620 # Disable optimizations that make assembler listings hard to read.
620 # reorder blocks reorders the control in the function 621 # reorder blocks reorders the control in the function
621 # ipa clone creates specialized cloned functions 622 # ipa clone creates specialized cloned functions
622 # partial inlining inlines only parts of functions 623 # partial inlining inlines only parts of functions
623 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 624 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
624 $(call cc-option,-fno-ipa-cp-clone,) \ 625 $(call cc-option,-fno-ipa-cp-clone,) \
625 $(call cc-option,-fno-partial-inlining) 626 $(call cc-option,-fno-partial-inlining)
626 endif 627 endif
627 628
628 ifneq ($(CONFIG_FRAME_WARN),0) 629 ifneq ($(CONFIG_FRAME_WARN),0)
629 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 630 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
630 endif 631 endif
631 632
632 # Handle stack protector mode. 633 # Handle stack protector mode.
633 # 634 #
634 # Since kbuild can potentially perform two passes (first with the old 635 # Since kbuild can potentially perform two passes (first with the old
635 # .config values and then with updated .config values), we cannot error out 636 # .config values and then with updated .config values), we cannot error out
636 # if a desired compiler option is unsupported. If we were to error, kbuild 637 # if a desired compiler option is unsupported. If we were to error, kbuild
637 # could never get to the second pass and actually notice that we changed 638 # could never get to the second pass and actually notice that we changed
638 # the option to something that was supported. 639 # the option to something that was supported.
639 # 640 #
640 # Additionally, we don't want to fallback and/or silently change which compiler 641 # Additionally, we don't want to fallback and/or silently change which compiler
641 # flags will be used, since that leads to producing kernels with different 642 # flags will be used, since that leads to producing kernels with different
642 # security feature characteristics depending on the compiler used. ("But I 643 # security feature characteristics depending on the compiler used. ("But I
643 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") 644 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!")
644 # 645 #
645 # The middle ground is to warn here so that the failed option is obvious, but 646 # The middle ground is to warn here so that the failed option is obvious, but
646 # to let the build fail with bad compiler flags so that we can't produce a 647 # to let the build fail with bad compiler flags so that we can't produce a
647 # kernel when there is a CONFIG and compiler mismatch. 648 # kernel when there is a CONFIG and compiler mismatch.
648 # 649 #
649 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR 650 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
650 stackp-flag := -fstack-protector 651 stackp-flag := -fstack-protector
651 ifeq ($(call cc-option, $(stackp-flag)),) 652 ifeq ($(call cc-option, $(stackp-flag)),)
652 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ 653 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
653 -fstack-protector not supported by compiler) 654 -fstack-protector not supported by compiler)
654 endif 655 endif
655 else 656 else
656 ifdef CONFIG_CC_STACKPROTECTOR_STRONG 657 ifdef CONFIG_CC_STACKPROTECTOR_STRONG
657 stackp-flag := -fstack-protector-strong 658 stackp-flag := -fstack-protector-strong
658 ifeq ($(call cc-option, $(stackp-flag)),) 659 ifeq ($(call cc-option, $(stackp-flag)),)
659 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ 660 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
660 -fstack-protector-strong not supported by compiler) 661 -fstack-protector-strong not supported by compiler)
661 endif 662 endif
662 else 663 else
663 # Force off for distro compilers that enable stack protector by default. 664 # Force off for distro compilers that enable stack protector by default.
664 stackp-flag := $(call cc-option, -fno-stack-protector) 665 stackp-flag := $(call cc-option, -fno-stack-protector)
665 endif 666 endif
666 endif 667 endif
667 KBUILD_CFLAGS += $(stackp-flag) 668 KBUILD_CFLAGS += $(stackp-flag)
668 669
669 ifeq ($(cc-name),clang) 670 ifeq ($(cc-name),clang)
670 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 671 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
671 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) 672 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
672 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) 673 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
673 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 674 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
674 KBUILD_CFLAGS += $(call cc-disable-warning, gnu) 675 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
675 # Quiet clang warning: comparison of unsigned expression < 0 is always false 676 # Quiet clang warning: comparison of unsigned expression < 0 is always false
676 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) 677 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
677 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 678 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
678 # source of a reference will be _MergedGlobals and not on of the whitelisted names. 679 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
679 # See modpost pattern 2 680 # See modpost pattern 2
680 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) 681 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
681 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 682 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
682 else 683 else
683 684
684 # This warning generated too much noise in a regular build. 685 # This warning generated too much noise in a regular build.
685 # Use make W=1 to enable this warning (see scripts/Makefile.build) 686 # Use make W=1 to enable this warning (see scripts/Makefile.build)
686 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 687 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
687 endif 688 endif
688 689
689 ifdef CONFIG_FRAME_POINTER 690 ifdef CONFIG_FRAME_POINTER
690 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 691 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
691 else 692 else
692 # Some targets (ARM with Thumb2, for example), can't be built with frame 693 # Some targets (ARM with Thumb2, for example), can't be built with frame
693 # pointers. For those, we don't have FUNCTION_TRACER automatically 694 # pointers. For those, we don't have FUNCTION_TRACER automatically
694 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 695 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
695 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 696 # incompatible with -fomit-frame-pointer with current GCC, so we don't use
696 # -fomit-frame-pointer with FUNCTION_TRACER. 697 # -fomit-frame-pointer with FUNCTION_TRACER.
697 ifndef CONFIG_FUNCTION_TRACER 698 ifndef CONFIG_FUNCTION_TRACER
698 KBUILD_CFLAGS += -fomit-frame-pointer 699 KBUILD_CFLAGS += -fomit-frame-pointer
699 endif 700 endif
700 endif 701 endif
701 702
702 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 703 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
703 704
704 ifdef CONFIG_DEBUG_INFO 705 ifdef CONFIG_DEBUG_INFO
705 ifdef CONFIG_DEBUG_INFO_SPLIT 706 ifdef CONFIG_DEBUG_INFO_SPLIT
706 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 707 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g)
707 else 708 else
708 KBUILD_CFLAGS += -g 709 KBUILD_CFLAGS += -g
709 endif 710 endif
710 KBUILD_AFLAGS += -Wa,-gdwarf-2 711 KBUILD_AFLAGS += -Wa,-gdwarf-2
711 endif 712 endif
712 ifdef CONFIG_DEBUG_INFO_DWARF4 713 ifdef CONFIG_DEBUG_INFO_DWARF4
713 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 714 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,)
714 endif 715 endif
715 716
716 ifdef CONFIG_DEBUG_INFO_REDUCED 717 ifdef CONFIG_DEBUG_INFO_REDUCED
717 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 718 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
718 $(call cc-option,-fno-var-tracking) 719 $(call cc-option,-fno-var-tracking)
719 endif 720 endif
720 721
721 ifdef CONFIG_FUNCTION_TRACER 722 ifdef CONFIG_FUNCTION_TRACER
722 ifndef CC_FLAGS_FTRACE 723 ifndef CC_FLAGS_FTRACE
723 CC_FLAGS_FTRACE := -pg 724 CC_FLAGS_FTRACE := -pg
724 endif 725 endif
725 export CC_FLAGS_FTRACE 726 export CC_FLAGS_FTRACE
726 ifdef CONFIG_HAVE_FENTRY 727 ifdef CONFIG_HAVE_FENTRY
727 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 728 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
728 endif 729 endif
729 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) 730 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
730 KBUILD_AFLAGS += $(CC_USING_FENTRY) 731 KBUILD_AFLAGS += $(CC_USING_FENTRY)
731 ifdef CONFIG_DYNAMIC_FTRACE 732 ifdef CONFIG_DYNAMIC_FTRACE
732 ifdef CONFIG_HAVE_C_RECORDMCOUNT 733 ifdef CONFIG_HAVE_C_RECORDMCOUNT
733 BUILD_C_RECORDMCOUNT := y 734 BUILD_C_RECORDMCOUNT := y
734 export BUILD_C_RECORDMCOUNT 735 export BUILD_C_RECORDMCOUNT
735 endif 736 endif
736 endif 737 endif
737 endif 738 endif
738 739
739 # We trigger additional mismatches with less inlining 740 # We trigger additional mismatches with less inlining
740 ifdef CONFIG_DEBUG_SECTION_MISMATCH 741 ifdef CONFIG_DEBUG_SECTION_MISMATCH
741 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 742 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
742 endif 743 endif
743 744
744 # arch Makefile may override CC so keep this after arch Makefile is included 745 # arch Makefile may override CC so keep this after arch Makefile is included
745 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 746 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
746 CHECKFLAGS += $(NOSTDINC_FLAGS) 747 CHECKFLAGS += $(NOSTDINC_FLAGS)
747 748
748 # warn about C99 declaration after statement 749 # warn about C99 declaration after statement
749 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 750 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
750 751
751 # disable pointer signed / unsigned warnings in gcc 4.0 752 # disable pointer signed / unsigned warnings in gcc 4.0
752 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 753 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
753 754
754 # disable invalid "can't wrap" optimizations for signed / pointers 755 # disable invalid "can't wrap" optimizations for signed / pointers
755 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 756 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
756 757
757 # conserve stack if available 758 # conserve stack if available
758 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 759 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
759 760
760 # disallow errors like 'EXPORT_GPL(foo);' with missing header 761 # disallow errors like 'EXPORT_GPL(foo);' with missing header
761 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 762 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
762 763
763 # require functions to have arguments in prototypes, not empty 'int foo()' 764 # require functions to have arguments in prototypes, not empty 'int foo()'
764 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 765 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
765 766
766 # Prohibit date/time macros, which would make the build non-deterministic 767 # Prohibit date/time macros, which would make the build non-deterministic
767 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 768 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
768 769
769 # use the deterministic mode of AR if available 770 # use the deterministic mode of AR if available
770 KBUILD_ARFLAGS := $(call ar-option,D) 771 KBUILD_ARFLAGS := $(call ar-option,D)
771 772
772 # check for 'asm goto' 773 # check for 'asm goto'
773 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) 774 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
774 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 775 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
775 KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO 776 KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
776 endif 777 endif
777 778
778 include scripts/Makefile.kasan 779 include scripts/Makefile.kasan
779 include scripts/Makefile.extrawarn 780 include scripts/Makefile.extrawarn
780 781
781 # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the 782 # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
782 # last assignments 783 # last assignments
783 KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) 784 KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
784 KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) 785 KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS)
785 KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) 786 KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS)
786 787
787 # Use --build-id when available. 788 # Use --build-id when available.
788 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 789 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
789 $(call cc-ldoption, -Wl$(comma)--build-id,)) 790 $(call cc-ldoption, -Wl$(comma)--build-id,))
790 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 791 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
791 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 792 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
792 793
793 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 794 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
794 LDFLAGS_vmlinux += $(call ld-option, -X,) 795 LDFLAGS_vmlinux += $(call ld-option, -X,)
795 endif 796 endif
796 797
797 # Default kernel image to build when no specific target is given. 798 # Default kernel image to build when no specific target is given.
798 # KBUILD_IMAGE may be overruled on the command line or 799 # KBUILD_IMAGE may be overruled on the command line or
799 # set in the environment 800 # set in the environment
800 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 801 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
801 # this default value 802 # this default value
802 export KBUILD_IMAGE ?= vmlinux 803 export KBUILD_IMAGE ?= vmlinux
803 804
804 # 805 #
805 # INSTALL_PATH specifies where to place the updated kernel and system map 806 # INSTALL_PATH specifies where to place the updated kernel and system map
806 # images. Default is /boot, but you can set it to other values 807 # images. Default is /boot, but you can set it to other values
807 export INSTALL_PATH ?= /boot 808 export INSTALL_PATH ?= /boot
808 809
809 # 810 #
810 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 811 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
811 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 812 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
812 # an argument if needed. Otherwise it defaults to the kernel install path 813 # an argument if needed. Otherwise it defaults to the kernel install path
813 # 814 #
814 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 815 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
815 816
816 # 817 #
817 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 818 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
818 # relocations required by build roots. This is not defined in the 819 # relocations required by build roots. This is not defined in the
819 # makefile but the argument can be passed to make if needed. 820 # makefile but the argument can be passed to make if needed.
820 # 821 #
821 822
822 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 823 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
823 export MODLIB 824 export MODLIB
824 825
825 # 826 #
826 # INSTALL_MOD_STRIP, if defined, will cause modules to be 827 # INSTALL_MOD_STRIP, if defined, will cause modules to be
827 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 828 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
828 # the default option --strip-debug will be used. Otherwise, 829 # the default option --strip-debug will be used. Otherwise,
829 # INSTALL_MOD_STRIP value will be used as the options to the strip command. 830 # INSTALL_MOD_STRIP value will be used as the options to the strip command.
830 831
831 ifdef INSTALL_MOD_STRIP 832 ifdef INSTALL_MOD_STRIP
832 ifeq ($(INSTALL_MOD_STRIP),1) 833 ifeq ($(INSTALL_MOD_STRIP),1)
833 mod_strip_cmd = $(STRIP) --strip-debug 834 mod_strip_cmd = $(STRIP) --strip-debug
834 else 835 else
835 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 836 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
836 endif # INSTALL_MOD_STRIP=1 837 endif # INSTALL_MOD_STRIP=1
837 else 838 else
838 mod_strip_cmd = true 839 mod_strip_cmd = true
839 endif # INSTALL_MOD_STRIP 840 endif # INSTALL_MOD_STRIP
840 export mod_strip_cmd 841 export mod_strip_cmd
841 842
842 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 843 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
843 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 844 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
844 # or CONFIG_MODULE_COMPRESS_XZ. 845 # or CONFIG_MODULE_COMPRESS_XZ.
845 846
846 mod_compress_cmd = true 847 mod_compress_cmd = true
847 ifdef CONFIG_MODULE_COMPRESS 848 ifdef CONFIG_MODULE_COMPRESS
848 ifdef CONFIG_MODULE_COMPRESS_GZIP 849 ifdef CONFIG_MODULE_COMPRESS_GZIP
849 mod_compress_cmd = gzip -n -f 850 mod_compress_cmd = gzip -n -f
850 endif # CONFIG_MODULE_COMPRESS_GZIP 851 endif # CONFIG_MODULE_COMPRESS_GZIP
851 ifdef CONFIG_MODULE_COMPRESS_XZ 852 ifdef CONFIG_MODULE_COMPRESS_XZ
852 mod_compress_cmd = xz -f 853 mod_compress_cmd = xz -f
853 endif # CONFIG_MODULE_COMPRESS_XZ 854 endif # CONFIG_MODULE_COMPRESS_XZ
854 endif # CONFIG_MODULE_COMPRESS 855 endif # CONFIG_MODULE_COMPRESS
855 export mod_compress_cmd 856 export mod_compress_cmd
856 857
857 # Select initial ramdisk compression format, default is gzip(1). 858 # Select initial ramdisk compression format, default is gzip(1).
858 # This shall be used by the dracut(8) tool while creating an initramfs image. 859 # This shall be used by the dracut(8) tool while creating an initramfs image.
859 # 860 #
860 INITRD_COMPRESS-y := gzip 861 INITRD_COMPRESS-y := gzip
861 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 862 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
862 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma 863 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
863 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz 864 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
864 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo 865 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
865 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 866 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
866 # do not export INITRD_COMPRESS, since we didn't actually 867 # do not export INITRD_COMPRESS, since we didn't actually
867 # choose a sane default compression above. 868 # choose a sane default compression above.
868 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 869 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
869 870
870 ifdef CONFIG_MODULE_SIG_ALL 871 ifdef CONFIG_MODULE_SIG_ALL
871 $(eval $(call config_filename,MODULE_SIG_KEY)) 872 $(eval $(call config_filename,MODULE_SIG_KEY))
872 873
873 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 874 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509
874 else 875 else
875 mod_sign_cmd = true 876 mod_sign_cmd = true
876 endif 877 endif
877 export mod_sign_cmd 878 export mod_sign_cmd
878 879
879 880
880 ifeq ($(KBUILD_EXTMOD),) 881 ifeq ($(KBUILD_EXTMOD),)
881 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 882 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
882 883
883 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 884 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
884 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 885 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
885 $(net-y) $(net-m) $(libs-y) $(libs-m))) 886 $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y)))
886 887
887 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 888 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
888 $(init-) $(core-) $(drivers-) $(net-) $(libs-)))) 889 $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-))))
889 890
890 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 891 init-y := $(patsubst %/, %/built-in.o, $(init-y))
891 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 892 core-y := $(patsubst %/, %/built-in.o, $(core-y))
892 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 893 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
893 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 894 net-y := $(patsubst %/, %/built-in.o, $(net-y))
894 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 895 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
895 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 896 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
896 libs-y := $(libs-y1) $(libs-y2) 897 libs-y := $(libs-y1) $(libs-y2)
898 virt-y := $(patsubst %/, %/built-in.o, $(virt-y))
897 899
898 # Externally visible symbols (used by link-vmlinux.sh) 900 # Externally visible symbols (used by link-vmlinux.sh)
899 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) 901 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
900 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) 902 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) $(virt-y)
901 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 903 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
902 export LDFLAGS_vmlinux 904 export LDFLAGS_vmlinux
903 # used by scripts/pacmage/Makefile 905 # used by scripts/pacmage/Makefile
904 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) 906 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools)
905 907
906 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) 908 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
907 909
908 # Final link of vmlinux 910 # Final link of vmlinux
909 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) 911 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
910 quiet_cmd_link-vmlinux = LINK $@ 912 quiet_cmd_link-vmlinux = LINK $@
911 913
912 # Include targets which we want to 914 # Include targets which we want to
913 # execute if the rest of the kernel build went well. 915 # execute if the rest of the kernel build went well.
914 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE 916 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
915 ifdef CONFIG_HEADERS_CHECK 917 ifdef CONFIG_HEADERS_CHECK
916 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 918 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
917 endif 919 endif
918 ifdef CONFIG_SAMPLES 920 ifdef CONFIG_SAMPLES
919 $(Q)$(MAKE) $(build)=samples 921 $(Q)$(MAKE) $(build)=samples
920 endif 922 endif
921 ifdef CONFIG_BUILD_DOCSRC 923 ifdef CONFIG_BUILD_DOCSRC
922 $(Q)$(MAKE) $(build)=Documentation 924 $(Q)$(MAKE) $(build)=Documentation
923 endif 925 endif
924 ifdef CONFIG_GDB_SCRIPTS 926 ifdef CONFIG_GDB_SCRIPTS
925 $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py 927 $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py
926 endif 928 endif
927 +$(call if_changed,link-vmlinux) 929 +$(call if_changed,link-vmlinux)
928 930
929 # The actual objects are generated when descending, 931 # The actual objects are generated when descending,
930 # make sure no implicit rule kicks in 932 # make sure no implicit rule kicks in
931 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 933 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
932 934
933 # Handle descending into subdirectories listed in $(vmlinux-dirs) 935 # Handle descending into subdirectories listed in $(vmlinux-dirs)
934 # Preset locale variables to speed up the build process. Limit locale 936 # Preset locale variables to speed up the build process. Limit locale
935 # tweaks to this spot to avoid wrong language settings when running 937 # tweaks to this spot to avoid wrong language settings when running
936 # make menuconfig etc. 938 # make menuconfig etc.
937 # Error messages still appears in the original language 939 # Error messages still appears in the original language
938 940
939 PHONY += $(vmlinux-dirs) 941 PHONY += $(vmlinux-dirs)
940 $(vmlinux-dirs): prepare scripts 942 $(vmlinux-dirs): prepare scripts
941 $(Q)$(MAKE) $(build)=$@ 943 $(Q)$(MAKE) $(build)=$@
942 944
943 define filechk_kernel.release 945 define filechk_kernel.release
944 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 946 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
945 endef 947 endef
946 948
947 # Store (new) KERNELRELEASE string in include/config/kernel.release 949 # Store (new) KERNELRELEASE string in include/config/kernel.release
948 include/config/kernel.release: include/config/auto.conf FORCE 950 include/config/kernel.release: include/config/auto.conf FORCE
949 $(call filechk,kernel.release) 951 $(call filechk,kernel.release)
950 952
951 953
952 # Things we need to do before we recursively start building the kernel 954 # Things we need to do before we recursively start building the kernel
953 # or the modules are listed in "prepare". 955 # or the modules are listed in "prepare".
954 # A multi level approach is used. prepareN is processed before prepareN-1. 956 # A multi level approach is used. prepareN is processed before prepareN-1.
955 # archprepare is used in arch Makefiles and when processed asm symlink, 957 # archprepare is used in arch Makefiles and when processed asm symlink,
956 # version.h and scripts_basic is processed / created. 958 # version.h and scripts_basic is processed / created.
957 959
958 # Listed in dependency order 960 # Listed in dependency order
959 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 961 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
960 962
961 # prepare3 is used to check if we are building in a separate output directory, 963 # prepare3 is used to check if we are building in a separate output directory,
962 # and if so do: 964 # and if so do:
963 # 1) Check that make has not been executed in the kernel src $(srctree) 965 # 1) Check that make has not been executed in the kernel src $(srctree)
964 prepare3: include/config/kernel.release 966 prepare3: include/config/kernel.release
965 ifneq ($(KBUILD_SRC),) 967 ifneq ($(KBUILD_SRC),)
966 @$(kecho) ' Using $(srctree) as source for kernel' 968 @$(kecho) ' Using $(srctree) as source for kernel'
967 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 969 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
968 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 970 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
969 echo >&2 " in the '$(srctree)' directory.";\ 971 echo >&2 " in the '$(srctree)' directory.";\
970 /bin/false; \ 972 /bin/false; \
971 fi; 973 fi;
972 endif 974 endif
973 975
974 # prepare2 creates a makefile if using a separate output directory 976 # prepare2 creates a makefile if using a separate output directory
975 prepare2: prepare3 outputmakefile asm-generic 977 prepare2: prepare3 outputmakefile asm-generic
976 978
977 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ 979 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
978 include/config/auto.conf 980 include/config/auto.conf
979 $(cmd_crmodverdir) 981 $(cmd_crmodverdir)
980 982
981 archprepare: archheaders archscripts prepare1 scripts_basic 983 archprepare: archheaders archscripts prepare1 scripts_basic
982 984
983 prepare0: archprepare FORCE 985 prepare0: archprepare FORCE
984 $(Q)$(MAKE) $(build)=. 986 $(Q)$(MAKE) $(build)=.
985 987
986 # All the preparing.. 988 # All the preparing..
987 prepare: prepare0 989 prepare: prepare0
988 990
989 # Generate some files 991 # Generate some files
990 # --------------------------------------------------------------------------- 992 # ---------------------------------------------------------------------------
991 993
992 # KERNELRELEASE can change from a few different places, meaning version.h 994 # KERNELRELEASE can change from a few different places, meaning version.h
993 # needs to be updated, so this check is forced on all builds 995 # needs to be updated, so this check is forced on all builds
994 996
995 uts_len := 64 997 uts_len := 64
996 define filechk_utsrelease.h 998 define filechk_utsrelease.h
997 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 999 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
998 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1000 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
999 exit 1; \ 1001 exit 1; \
1000 fi; \ 1002 fi; \
1001 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1003 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1002 endef 1004 endef
1003 1005
1004 define filechk_version.h 1006 define filechk_version.h
1005 (echo \#define LINUX_VERSION_CODE $(shell \ 1007 (echo \#define LINUX_VERSION_CODE $(shell \
1006 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1008 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
1007 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1009 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1008 endef 1010 endef
1009 1011
1010 $(version_h): $(srctree)/Makefile FORCE 1012 $(version_h): $(srctree)/Makefile FORCE
1011 $(call filechk,version.h) 1013 $(call filechk,version.h)
1012 $(Q)rm -f $(old_version_h) 1014 $(Q)rm -f $(old_version_h)
1013 1015
1014 include/generated/utsrelease.h: include/config/kernel.release FORCE 1016 include/generated/utsrelease.h: include/config/kernel.release FORCE
1015 $(call filechk,utsrelease.h) 1017 $(call filechk,utsrelease.h)
1016 1018
1017 PHONY += headerdep 1019 PHONY += headerdep
1018 headerdep: 1020 headerdep:
1019 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1021 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
1020 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1022 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
1021 1023
1022 # --------------------------------------------------------------------------- 1024 # ---------------------------------------------------------------------------
1023 # Firmware install 1025 # Firmware install
1024 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1026 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1025 export INSTALL_FW_PATH 1027 export INSTALL_FW_PATH
1026 1028
1027 PHONY += firmware_install 1029 PHONY += firmware_install
1028 firmware_install: FORCE 1030 firmware_install: FORCE
1029 @mkdir -p $(objtree)/firmware 1031 @mkdir -p $(objtree)/firmware
1030 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1032 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1031 1033
1032 # --------------------------------------------------------------------------- 1034 # ---------------------------------------------------------------------------
1033 # Kernel headers 1035 # Kernel headers
1034 1036
1035 #Default location for installed headers 1037 #Default location for installed headers
1036 export INSTALL_HDR_PATH = $(objtree)/usr 1038 export INSTALL_HDR_PATH = $(objtree)/usr
1037 1039
1038 # If we do an all arch process set dst to asm-$(hdr-arch) 1040 # If we do an all arch process set dst to asm-$(hdr-arch)
1039 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1041 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1040 1042
1041 PHONY += archheaders 1043 PHONY += archheaders
1042 archheaders: 1044 archheaders:
1043 1045
1044 PHONY += archscripts 1046 PHONY += archscripts
1045 archscripts: 1047 archscripts:
1046 1048
1047 PHONY += __headers 1049 PHONY += __headers
1048 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE 1050 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
1049 $(Q)$(MAKE) $(build)=scripts build_unifdef 1051 $(Q)$(MAKE) $(build)=scripts build_unifdef
1050 1052
1051 PHONY += headers_install_all 1053 PHONY += headers_install_all
1052 headers_install_all: 1054 headers_install_all:
1053 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1055 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1054 1056
1055 PHONY += headers_install 1057 PHONY += headers_install
1056 headers_install: __headers 1058 headers_install: __headers
1057 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ 1059 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
1058 $(error Headers not exportable for the $(SRCARCH) architecture)) 1060 $(error Headers not exportable for the $(SRCARCH) architecture))
1059 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1061 $(Q)$(MAKE) $(hdr-inst)=include/uapi
1060 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) 1062 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
1061 1063
1062 PHONY += headers_check_all 1064 PHONY += headers_check_all
1063 headers_check_all: headers_install_all 1065 headers_check_all: headers_install_all
1064 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1066 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1065 1067
1066 PHONY += headers_check 1068 PHONY += headers_check
1067 headers_check: headers_install 1069 headers_check: headers_install
1068 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 1070 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1069 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 1071 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
1070 1072
1071 # --------------------------------------------------------------------------- 1073 # ---------------------------------------------------------------------------
1072 # Kernel selftest 1074 # Kernel selftest
1073 1075
1074 PHONY += kselftest 1076 PHONY += kselftest
1075 kselftest: 1077 kselftest:
1076 $(Q)$(MAKE) -C tools/testing/selftests run_tests 1078 $(Q)$(MAKE) -C tools/testing/selftests run_tests
1077 1079
1078 # --------------------------------------------------------------------------- 1080 # ---------------------------------------------------------------------------
1079 # Modules 1081 # Modules
1080 1082
1081 ifdef CONFIG_MODULES 1083 ifdef CONFIG_MODULES
1082 1084
1083 # By default, build modules as well 1085 # By default, build modules as well
1084 1086
1085 all: modules 1087 all: modules
1086 1088
1087 # Build modules 1089 # Build modules
1088 # 1090 #
1089 # A module can be listed more than once in obj-m resulting in 1091 # A module can be listed more than once in obj-m resulting in
1090 # duplicate lines in modules.order files. Those are removed 1092 # duplicate lines in modules.order files. Those are removed
1091 # using awk while concatenating to the final file. 1093 # using awk while concatenating to the final file.
1092 1094
1093 PHONY += modules 1095 PHONY += modules
1094 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1096 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
1095 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1097 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1096 @$(kecho) ' Building modules, stage 2.'; 1098 @$(kecho) ' Building modules, stage 2.';
1097 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1099 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1098 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1100 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1099 1101
1100 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1102 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1101 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1103 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1102 1104
1103 %/modules.builtin: include/config/auto.conf 1105 %/modules.builtin: include/config/auto.conf
1104 $(Q)$(MAKE) $(modbuiltin)=$* 1106 $(Q)$(MAKE) $(modbuiltin)=$*
1105 1107
1106 1108
1107 # Target to prepare building external modules 1109 # Target to prepare building external modules
1108 PHONY += modules_prepare 1110 PHONY += modules_prepare
1109 modules_prepare: prepare scripts 1111 modules_prepare: prepare scripts
1110 1112
1111 # Target to install modules 1113 # Target to install modules
1112 PHONY += modules_install 1114 PHONY += modules_install
1113 modules_install: _modinst_ _modinst_post 1115 modules_install: _modinst_ _modinst_post
1114 1116
1115 PHONY += _modinst_ 1117 PHONY += _modinst_
1116 _modinst_: 1118 _modinst_:
1117 @rm -rf $(MODLIB)/kernel 1119 @rm -rf $(MODLIB)/kernel
1118 @rm -f $(MODLIB)/source 1120 @rm -f $(MODLIB)/source
1119 @mkdir -p $(MODLIB)/kernel 1121 @mkdir -p $(MODLIB)/kernel
1120 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source 1122 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
1121 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1123 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1122 rm -f $(MODLIB)/build ; \ 1124 rm -f $(MODLIB)/build ; \
1123 ln -s $(CURDIR) $(MODLIB)/build ; \ 1125 ln -s $(CURDIR) $(MODLIB)/build ; \
1124 fi 1126 fi
1125 @cp -f $(objtree)/modules.order $(MODLIB)/ 1127 @cp -f $(objtree)/modules.order $(MODLIB)/
1126 @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1128 @cp -f $(objtree)/modules.builtin $(MODLIB)/
1127 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1129 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1128 1130
1129 # This depmod is only for convenience to give the initial 1131 # This depmod is only for convenience to give the initial
1130 # boot a modules.dep even before / is mounted read-write. However the 1132 # boot a modules.dep even before / is mounted read-write. However the
1131 # boot script depmod is the master version. 1133 # boot script depmod is the master version.
1132 PHONY += _modinst_post 1134 PHONY += _modinst_post
1133 _modinst_post: _modinst_ 1135 _modinst_post: _modinst_
1134 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1136 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1135 $(call cmd,depmod) 1137 $(call cmd,depmod)
1136 1138
1137 ifeq ($(CONFIG_MODULE_SIG), y) 1139 ifeq ($(CONFIG_MODULE_SIG), y)
1138 PHONY += modules_sign 1140 PHONY += modules_sign
1139 modules_sign: 1141 modules_sign:
1140 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1142 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1141 endif 1143 endif
1142 1144
1143 else # CONFIG_MODULES 1145 else # CONFIG_MODULES
1144 1146
1145 # Modules not configured 1147 # Modules not configured
1146 # --------------------------------------------------------------------------- 1148 # ---------------------------------------------------------------------------
1147 1149
1148 modules modules_install: FORCE 1150 modules modules_install: FORCE
1149 @echo >&2 1151 @echo >&2
1150 @echo >&2 "The present kernel configuration has modules disabled." 1152 @echo >&2 "The present kernel configuration has modules disabled."
1151 @echo >&2 "Type 'make config' and enable loadable module support." 1153 @echo >&2 "Type 'make config' and enable loadable module support."
1152 @echo >&2 "Then build a kernel with module support enabled." 1154 @echo >&2 "Then build a kernel with module support enabled."
1153 @echo >&2 1155 @echo >&2
1154 @exit 1 1156 @exit 1
1155 1157
1156 endif # CONFIG_MODULES 1158 endif # CONFIG_MODULES
1157 1159
1158 ### 1160 ###
1159 # Cleaning is done on three levels. 1161 # Cleaning is done on three levels.
1160 # make clean Delete most generated files 1162 # make clean Delete most generated files
1161 # Leave enough to build external modules 1163 # Leave enough to build external modules
1162 # make mrproper Delete the current configuration, and all generated files 1164 # make mrproper Delete the current configuration, and all generated files
1163 # make distclean Remove editor backup files, patch leftover files and the like 1165 # make distclean Remove editor backup files, patch leftover files and the like
1164 1166
1165 # Directories & files removed with 'make clean' 1167 # Directories & files removed with 'make clean'
1166 CLEAN_DIRS += $(MODVERDIR) 1168 CLEAN_DIRS += $(MODVERDIR)
1167 1169
1168 # Directories & files removed with 'make mrproper' 1170 # Directories & files removed with 'make mrproper'
1169 MRPROPER_DIRS += include/config usr/include include/generated \ 1171 MRPROPER_DIRS += include/config usr/include include/generated \
1170 arch/*/include/generated .tmp_objdiff 1172 arch/*/include/generated .tmp_objdiff
1171 MRPROPER_FILES += .config .config.old .version .old_version \ 1173 MRPROPER_FILES += .config .config.old .version .old_version \
1172 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1174 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1173 signing_key.pem signing_key.priv signing_key.x509 \ 1175 signing_key.pem signing_key.priv signing_key.x509 \
1174 x509.genkey extra_certificates signing_key.x509.keyid \ 1176 x509.genkey extra_certificates signing_key.x509.keyid \
1175 signing_key.x509.signer vmlinux-gdb.py 1177 signing_key.x509.signer vmlinux-gdb.py
1176 1178
1177 # clean - Delete most, but leave enough to build external modules 1179 # clean - Delete most, but leave enough to build external modules
1178 # 1180 #
1179 clean: rm-dirs := $(CLEAN_DIRS) 1181 clean: rm-dirs := $(CLEAN_DIRS)
1180 clean: rm-files := $(CLEAN_FILES) 1182 clean: rm-files := $(CLEAN_FILES)
1181 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1183 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1182 1184
1183 PHONY += $(clean-dirs) clean archclean vmlinuxclean 1185 PHONY += $(clean-dirs) clean archclean vmlinuxclean
1184 $(clean-dirs): 1186 $(clean-dirs):
1185 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1187 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1186 1188
1187 vmlinuxclean: 1189 vmlinuxclean:
1188 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1190 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1189 1191
1190 clean: archclean vmlinuxclean 1192 clean: archclean vmlinuxclean
1191 1193
1192 # mrproper - Delete all generated files, including .config 1194 # mrproper - Delete all generated files, including .config
1193 # 1195 #
1194 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1196 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1195 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1197 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1196 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1198 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1197 1199
1198 PHONY += $(mrproper-dirs) mrproper archmrproper 1200 PHONY += $(mrproper-dirs) mrproper archmrproper
1199 $(mrproper-dirs): 1201 $(mrproper-dirs):
1200 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1202 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1201 1203
1202 mrproper: clean archmrproper $(mrproper-dirs) 1204 mrproper: clean archmrproper $(mrproper-dirs)
1203 $(call cmd,rmdirs) 1205 $(call cmd,rmdirs)
1204 $(call cmd,rmfiles) 1206 $(call cmd,rmfiles)
1205 1207
1206 # distclean 1208 # distclean
1207 # 1209 #
1208 PHONY += distclean 1210 PHONY += distclean
1209 1211
1210 distclean: mrproper 1212 distclean: mrproper
1211 @find $(srctree) $(RCS_FIND_IGNORE) \ 1213 @find $(srctree) $(RCS_FIND_IGNORE) \
1212 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1214 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1213 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1215 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1214 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ 1216 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
1215 -type f -print | xargs rm -f 1217 -type f -print | xargs rm -f
1216 1218
1217 1219
1218 # Packaging of the kernel to various formats 1220 # Packaging of the kernel to various formats
1219 # --------------------------------------------------------------------------- 1221 # ---------------------------------------------------------------------------
1220 # rpm target kept for backward compatibility 1222 # rpm target kept for backward compatibility
1221 package-dir := scripts/package 1223 package-dir := scripts/package
1222 1224
1223 %src-pkg: FORCE 1225 %src-pkg: FORCE
1224 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1226 $(Q)$(MAKE) $(build)=$(package-dir) $@
1225 %pkg: include/config/kernel.release FORCE 1227 %pkg: include/config/kernel.release FORCE
1226 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1228 $(Q)$(MAKE) $(build)=$(package-dir) $@
1227 rpm: include/config/kernel.release FORCE 1229 rpm: include/config/kernel.release FORCE
1228 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1230 $(Q)$(MAKE) $(build)=$(package-dir) $@
1229 1231
1230 1232
1231 # Brief documentation of the typical targets used 1233 # Brief documentation of the typical targets used
1232 # --------------------------------------------------------------------------- 1234 # ---------------------------------------------------------------------------
1233 1235
1234 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1236 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1235 boards := $(sort $(notdir $(boards))) 1237 boards := $(sort $(notdir $(boards)))
1236 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1238 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1237 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1239 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1238 1240
1239 help: 1241 help:
1240 @echo 'Cleaning targets:' 1242 @echo 'Cleaning targets:'
1241 @echo ' clean - Remove most generated files but keep the config and' 1243 @echo ' clean - Remove most generated files but keep the config and'
1242 @echo ' enough build support to build external modules' 1244 @echo ' enough build support to build external modules'
1243 @echo ' mrproper - Remove all generated files + config + various backup files' 1245 @echo ' mrproper - Remove all generated files + config + various backup files'
1244 @echo ' distclean - mrproper + remove editor backup and patch files' 1246 @echo ' distclean - mrproper + remove editor backup and patch files'
1245 @echo '' 1247 @echo ''
1246 @echo 'Configuration targets:' 1248 @echo 'Configuration targets:'
1247 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1249 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1248 @echo '' 1250 @echo ''
1249 @echo 'Other generic targets:' 1251 @echo 'Other generic targets:'
1250 @echo ' all - Build all targets marked with [*]' 1252 @echo ' all - Build all targets marked with [*]'
1251 @echo '* vmlinux - Build the bare kernel' 1253 @echo '* vmlinux - Build the bare kernel'
1252 @echo '* modules - Build all modules' 1254 @echo '* modules - Build all modules'
1253 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1255 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1254 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1256 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1255 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1257 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1256 @echo ' dir/ - Build all files in dir and below' 1258 @echo ' dir/ - Build all files in dir and below'
1257 @echo ' dir/file.[oisS] - Build specified target only' 1259 @echo ' dir/file.[oisS] - Build specified target only'
1258 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1260 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1259 @echo ' (requires a recent binutils and recent build (System.map))' 1261 @echo ' (requires a recent binutils and recent build (System.map))'
1260 @echo ' dir/file.ko - Build module including final link' 1262 @echo ' dir/file.ko - Build module including final link'
1261 @echo ' modules_prepare - Set up for building external modules' 1263 @echo ' modules_prepare - Set up for building external modules'
1262 @echo ' tags/TAGS - Generate tags file for editors' 1264 @echo ' tags/TAGS - Generate tags file for editors'
1263 @echo ' cscope - Generate cscope index' 1265 @echo ' cscope - Generate cscope index'
1264 @echo ' gtags - Generate GNU GLOBAL index' 1266 @echo ' gtags - Generate GNU GLOBAL index'
1265 @echo ' kernelrelease - Output the release version string (use with make -s)' 1267 @echo ' kernelrelease - Output the release version string (use with make -s)'
1266 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1268 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)'
1267 @echo ' image_name - Output the image name (use with make -s)' 1269 @echo ' image_name - Output the image name (use with make -s)'
1268 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1270 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1269 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1271 echo ' (default: $(INSTALL_HDR_PATH))'; \
1270 echo '' 1272 echo ''
1271 @echo 'Static analysers' 1273 @echo 'Static analysers'
1272 @echo ' checkstack - Generate a list of stack hogs' 1274 @echo ' checkstack - Generate a list of stack hogs'
1273 @echo ' namespacecheck - Name space analysis on compiled kernel' 1275 @echo ' namespacecheck - Name space analysis on compiled kernel'
1274 @echo ' versioncheck - Sanity check on version.h usage' 1276 @echo ' versioncheck - Sanity check on version.h usage'
1275 @echo ' includecheck - Check for duplicate included header files' 1277 @echo ' includecheck - Check for duplicate included header files'
1276 @echo ' export_report - List the usages of all exported symbols' 1278 @echo ' export_report - List the usages of all exported symbols'
1277 @echo ' headers_check - Sanity check on exported headers' 1279 @echo ' headers_check - Sanity check on exported headers'
1278 @echo ' headerdep - Detect inclusion cycles in headers' 1280 @echo ' headerdep - Detect inclusion cycles in headers'
1279 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1281 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1280 @echo '' 1282 @echo ''
1281 @echo 'Kernel selftest' 1283 @echo 'Kernel selftest'
1282 @echo ' kselftest - Build and run kernel selftest (run as root)' 1284 @echo ' kselftest - Build and run kernel selftest (run as root)'
1283 @echo ' Build, install, and boot kernel before' 1285 @echo ' Build, install, and boot kernel before'
1284 @echo ' running kselftest on it' 1286 @echo ' running kselftest on it'
1285 @echo '' 1287 @echo ''
1286 @echo 'Kernel packaging:' 1288 @echo 'Kernel packaging:'
1287 @$(MAKE) $(build)=$(package-dir) help 1289 @$(MAKE) $(build)=$(package-dir) help
1288 @echo '' 1290 @echo ''
1289 @echo 'Documentation targets:' 1291 @echo 'Documentation targets:'
1290 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1292 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1291 @echo '' 1293 @echo ''
1292 @echo 'Architecture specific targets ($(SRCARCH)):' 1294 @echo 'Architecture specific targets ($(SRCARCH)):'
1293 @$(if $(archhelp),$(archhelp),\ 1295 @$(if $(archhelp),$(archhelp),\
1294 echo ' No architecture specific help defined for $(SRCARCH)') 1296 echo ' No architecture specific help defined for $(SRCARCH)')
1295 @echo '' 1297 @echo ''
1296 @$(if $(boards), \ 1298 @$(if $(boards), \
1297 $(foreach b, $(boards), \ 1299 $(foreach b, $(boards), \
1298 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1300 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1299 echo '') 1301 echo '')
1300 @$(if $(board-dirs), \ 1302 @$(if $(board-dirs), \
1301 $(foreach b, $(board-dirs), \ 1303 $(foreach b, $(board-dirs), \
1302 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1304 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1303 printf " %-16s - Show all of the above\\n" help-boards; \ 1305 printf " %-16s - Show all of the above\\n" help-boards; \
1304 echo '') 1306 echo '')
1305 1307
1306 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1308 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1307 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1309 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1308 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1310 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1309 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1311 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1310 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1312 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1311 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1313 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1312 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1314 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1313 @echo ' 1: warnings which may be relevant and do not occur too often' 1315 @echo ' 1: warnings which may be relevant and do not occur too often'
1314 @echo ' 2: warnings which occur quite often but may still be relevant' 1316 @echo ' 2: warnings which occur quite often but may still be relevant'
1315 @echo ' 3: more obscure warnings, can most likely be ignored' 1317 @echo ' 3: more obscure warnings, can most likely be ignored'
1316 @echo ' Multiple levels can be combined with W=12 or W=123' 1318 @echo ' Multiple levels can be combined with W=12 or W=123'
1317 @echo '' 1319 @echo ''
1318 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1320 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1319 @echo 'For further info see the ./README file' 1321 @echo 'For further info see the ./README file'
1320 1322
1321 1323
1322 help-board-dirs := $(addprefix help-,$(board-dirs)) 1324 help-board-dirs := $(addprefix help-,$(board-dirs))
1323 1325
1324 help-boards: $(help-board-dirs) 1326 help-boards: $(help-board-dirs)
1325 1327
1326 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1328 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)))
1327 1329
1328 $(help-board-dirs): help-%: 1330 $(help-board-dirs): help-%:
1329 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1331 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1330 @$(if $(boards-per-dir), \ 1332 @$(if $(boards-per-dir), \
1331 $(foreach b, $(boards-per-dir), \ 1333 $(foreach b, $(boards-per-dir), \
1332 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1334 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1333 echo '') 1335 echo '')
1334 1336
1335 1337
1336 # Documentation targets 1338 # Documentation targets
1337 # --------------------------------------------------------------------------- 1339 # ---------------------------------------------------------------------------
1338 %docs: scripts_basic FORCE 1340 %docs: scripts_basic FORCE
1339 $(Q)$(MAKE) $(build)=scripts build_docproc 1341 $(Q)$(MAKE) $(build)=scripts build_docproc
1340 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1342 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1341 1343
1342 else # KBUILD_EXTMOD 1344 else # KBUILD_EXTMOD
1343 1345
1344 ### 1346 ###
1345 # External module support. 1347 # External module support.
1346 # When building external modules the kernel used as basis is considered 1348 # When building external modules the kernel used as basis is considered
1347 # read-only, and no consistency checks are made and the make 1349 # read-only, and no consistency checks are made and the make
1348 # system is not used on the basis kernel. If updates are required 1350 # system is not used on the basis kernel. If updates are required
1349 # in the basis kernel ordinary make commands (without M=...) must 1351 # in the basis kernel ordinary make commands (without M=...) must
1350 # be used. 1352 # be used.
1351 # 1353 #
1352 # The following are the only valid targets when building external 1354 # The following are the only valid targets when building external
1353 # modules. 1355 # modules.
1354 # make M=dir clean Delete all automatically generated files 1356 # make M=dir clean Delete all automatically generated files
1355 # make M=dir modules Make all modules in specified dir 1357 # make M=dir modules Make all modules in specified dir
1356 # make M=dir Same as 'make M=dir modules' 1358 # make M=dir Same as 'make M=dir modules'
1357 # make M=dir modules_install 1359 # make M=dir modules_install
1358 # Install the modules built in the module directory 1360 # Install the modules built in the module directory
1359 # Assumes install directory is already created 1361 # Assumes install directory is already created
1360 1362
1361 # We are always building modules 1363 # We are always building modules
1362 KBUILD_MODULES := 1 1364 KBUILD_MODULES := 1
1363 PHONY += crmodverdir 1365 PHONY += crmodverdir
1364 crmodverdir: 1366 crmodverdir:
1365 $(cmd_crmodverdir) 1367 $(cmd_crmodverdir)
1366 1368
1367 PHONY += $(objtree)/Module.symvers 1369 PHONY += $(objtree)/Module.symvers
1368 $(objtree)/Module.symvers: 1370 $(objtree)/Module.symvers:
1369 @test -e $(objtree)/Module.symvers || ( \ 1371 @test -e $(objtree)/Module.symvers || ( \
1370 echo; \ 1372 echo; \
1371 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1373 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1372 echo " is missing; modules will have no dependencies and modversions."; \ 1374 echo " is missing; modules will have no dependencies and modversions."; \
1373 echo ) 1375 echo )
1374 1376
1375 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1377 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1376 PHONY += $(module-dirs) modules 1378 PHONY += $(module-dirs) modules
1377 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1379 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1378 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1380 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1379 1381
1380 modules: $(module-dirs) 1382 modules: $(module-dirs)
1381 @$(kecho) ' Building modules, stage 2.'; 1383 @$(kecho) ' Building modules, stage 2.';
1382 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1384 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1383 1385
1384 PHONY += modules_install 1386 PHONY += modules_install
1385 modules_install: _emodinst_ _emodinst_post 1387 modules_install: _emodinst_ _emodinst_post
1386 1388
1387 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1389 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1388 PHONY += _emodinst_ 1390 PHONY += _emodinst_
1389 _emodinst_: 1391 _emodinst_:
1390 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1392 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1391 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1393 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1392 1394
1393 PHONY += _emodinst_post 1395 PHONY += _emodinst_post
1394 _emodinst_post: _emodinst_ 1396 _emodinst_post: _emodinst_
1395 $(call cmd,depmod) 1397 $(call cmd,depmod)
1396 1398
1397 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1399 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1398 1400
1399 PHONY += $(clean-dirs) clean 1401 PHONY += $(clean-dirs) clean
1400 $(clean-dirs): 1402 $(clean-dirs):
1401 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1403 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1402 1404
1403 clean: rm-dirs := $(MODVERDIR) 1405 clean: rm-dirs := $(MODVERDIR)
1404 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1406 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1405 1407
1406 help: 1408 help:
1407 @echo ' Building external modules.' 1409 @echo ' Building external modules.'
1408 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1410 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1409 @echo '' 1411 @echo ''
1410 @echo ' modules - default target, build the module(s)' 1412 @echo ' modules - default target, build the module(s)'
1411 @echo ' modules_install - install the module' 1413 @echo ' modules_install - install the module'
1412 @echo ' clean - remove generated files in module directory only' 1414 @echo ' clean - remove generated files in module directory only'
1413 @echo '' 1415 @echo ''
1414 1416
1415 # Dummies... 1417 # Dummies...
1416 PHONY += prepare scripts 1418 PHONY += prepare scripts
1417 prepare: ; 1419 prepare: ;
1418 scripts: ; 1420 scripts: ;
1419 endif # KBUILD_EXTMOD 1421 endif # KBUILD_EXTMOD
1420 1422
1421 clean: $(clean-dirs) 1423 clean: $(clean-dirs)
1422 $(call cmd,rmdirs) 1424 $(call cmd,rmdirs)
1423 $(call cmd,rmfiles) 1425 $(call cmd,rmfiles)
1424 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1426 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1425 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1427 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1426 -o -name '*.ko.*' \ 1428 -o -name '*.ko.*' \
1427 -o -name '*.dwo' \ 1429 -o -name '*.dwo' \
1428 -o -name '*.su' \ 1430 -o -name '*.su' \
1429 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1431 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1430 -o -name '*.symtypes' -o -name 'modules.order' \ 1432 -o -name '*.symtypes' -o -name 'modules.order' \
1431 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1433 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1432 -o -name '*.gcno' \) -type f -print | xargs rm -f 1434 -o -name '*.gcno' \) -type f -print | xargs rm -f
1433 1435
1434 # Generate tags for editors 1436 # Generate tags for editors
1435 # --------------------------------------------------------------------------- 1437 # ---------------------------------------------------------------------------
1436 quiet_cmd_tags = GEN $@ 1438 quiet_cmd_tags = GEN $@
1437 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1439 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1438 1440
1439 tags TAGS cscope gtags: FORCE 1441 tags TAGS cscope gtags: FORCE
1440 $(call cmd,tags) 1442 $(call cmd,tags)
1441 1443
1442 # Scripts to check various things for consistency 1444 # Scripts to check various things for consistency
1443 # --------------------------------------------------------------------------- 1445 # ---------------------------------------------------------------------------
1444 1446
1445 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 1447 PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1446 1448
1447 includecheck: 1449 includecheck:
1448 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1450 find $(srctree)/* $(RCS_FIND_IGNORE) \
1449 -name '*.[hcS]' -type f -print | sort \ 1451 -name '*.[hcS]' -type f -print | sort \
1450 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1452 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1451 1453
1452 versioncheck: 1454 versioncheck:
1453 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1455 find $(srctree)/* $(RCS_FIND_IGNORE) \
1454 -name '*.[hcS]' -type f -print | sort \ 1456 -name '*.[hcS]' -type f -print | sort \
1455 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1457 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1456 1458
1457 coccicheck: 1459 coccicheck:
1458 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1460 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1459 1461
1460 namespacecheck: 1462 namespacecheck:
1461 $(PERL) $(srctree)/scripts/namespace.pl 1463 $(PERL) $(srctree)/scripts/namespace.pl
1462 1464
1463 export_report: 1465 export_report:
1464 $(PERL) $(srctree)/scripts/export_report.pl 1466 $(PERL) $(srctree)/scripts/export_report.pl
1465 1467
1466 endif #ifeq ($(config-targets),1) 1468 endif #ifeq ($(config-targets),1)
1467 endif #ifeq ($(mixed-targets),1) 1469 endif #ifeq ($(mixed-targets),1)
1468 1470
1469 PHONY += checkstack kernelrelease kernelversion image_name 1471 PHONY += checkstack kernelrelease kernelversion image_name
1470 1472
1471 # UML needs a little special treatment here. It wants to use the host 1473 # UML needs a little special treatment here. It wants to use the host
1472 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1474 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1473 # else wants $(ARCH), including people doing cross-builds, which means 1475 # else wants $(ARCH), including people doing cross-builds, which means
1474 # that $(SUBARCH) doesn't work here. 1476 # that $(SUBARCH) doesn't work here.
1475 ifeq ($(ARCH), um) 1477 ifeq ($(ARCH), um)
1476 CHECKSTACK_ARCH := $(SUBARCH) 1478 CHECKSTACK_ARCH := $(SUBARCH)
1477 else 1479 else
1478 CHECKSTACK_ARCH := $(ARCH) 1480 CHECKSTACK_ARCH := $(ARCH)
1479 endif 1481 endif
1480 checkstack: 1482 checkstack:
1481 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1483 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1482 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1484 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1483 1485
1484 kernelrelease: 1486 kernelrelease:
1485 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1487 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1486 1488
1487 kernelversion: 1489 kernelversion:
1488 @echo $(KERNELVERSION) 1490 @echo $(KERNELVERSION)
1489 1491
1490 image_name: 1492 image_name:
1491 @echo $(KBUILD_IMAGE) 1493 @echo $(KBUILD_IMAGE)
1492 1494
1493 # Clear a bunch of variables before executing the submake 1495 # Clear a bunch of variables before executing the submake
1494 tools/: FORCE 1496 tools/: FORCE
1495 $(Q)mkdir -p $(objtree)/tools 1497 $(Q)mkdir -p $(objtree)/tools
1496 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(O) subdir=tools -C $(src)/tools/ 1498 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(O) subdir=tools -C $(src)/tools/
1497 1499
1498 tools/%: FORCE 1500 tools/%: FORCE
1499 $(Q)mkdir -p $(objtree)/tools 1501 $(Q)mkdir -p $(objtree)/tools
1500 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(O) subdir=tools -C $(src)/tools/ $* 1502 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(O) subdir=tools -C $(src)/tools/ $*
1501 1503
1502 # Single targets 1504 # Single targets
1503 # --------------------------------------------------------------------------- 1505 # ---------------------------------------------------------------------------
1504 # Single targets are compatible with: 1506 # Single targets are compatible with:
1505 # - build with mixed source and output 1507 # - build with mixed source and output
1506 # - build with separate output dir 'make O=...' 1508 # - build with separate output dir 'make O=...'
1507 # - external modules 1509 # - external modules
1508 # 1510 #
1509 # target-dir => where to store outputfile 1511 # target-dir => where to store outputfile
1510 # build-dir => directory in kernel source tree to use 1512 # build-dir => directory in kernel source tree to use
1511 1513
1512 ifeq ($(KBUILD_EXTMOD),) 1514 ifeq ($(KBUILD_EXTMOD),)
1513 build-dir = $(patsubst %/,%,$(dir $@)) 1515 build-dir = $(patsubst %/,%,$(dir $@))
1514 target-dir = $(dir $@) 1516 target-dir = $(dir $@)
1515 else 1517 else
1516 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1518 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1517 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1519 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1518 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1520 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1519 endif 1521 endif
1520 1522
1521 %.s: %.c prepare scripts FORCE 1523 %.s: %.c prepare scripts FORCE
1522 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1524 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1523 %.i: %.c prepare scripts FORCE 1525 %.i: %.c prepare scripts FORCE
1524 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1526 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1525 %.o: %.c prepare scripts FORCE 1527 %.o: %.c prepare scripts FORCE
1526 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1528 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1527 %.lst: %.c prepare scripts FORCE 1529 %.lst: %.c prepare scripts FORCE
1528 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1530 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1529 %.s: %.S prepare scripts FORCE 1531 %.s: %.S prepare scripts FORCE
1530 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1532 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1531 %.o: %.S prepare scripts FORCE 1533 %.o: %.S prepare scripts FORCE
1532 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1534 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1533 %.symtypes: %.c prepare scripts FORCE 1535 %.symtypes: %.c prepare scripts FORCE
1534 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1536 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1535 1537
1536 # Modules 1538 # Modules
1537 /: prepare scripts FORCE 1539 /: prepare scripts FORCE
1538 $(cmd_crmodverdir) 1540 $(cmd_crmodverdir)
1539 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1541 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1540 $(build)=$(build-dir) 1542 $(build)=$(build-dir)
1541 # Make sure the latest headers are built for Documentation 1543 # Make sure the latest headers are built for Documentation
1542 Documentation/: headers_install 1544 Documentation/: headers_install
1543 %/: prepare scripts FORCE 1545 %/: prepare scripts FORCE
1544 $(cmd_crmodverdir) 1546 $(cmd_crmodverdir)
1545 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1547 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1546 $(build)=$(build-dir) 1548 $(build)=$(build-dir)
1547 %.ko: prepare scripts FORCE 1549 %.ko: prepare scripts FORCE
1548 $(cmd_crmodverdir) 1550 $(cmd_crmodverdir)
1549 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1551 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1550 $(build)=$(build-dir) $(@:.ko=.o) 1552 $(build)=$(build-dir) $(@:.ko=.o)
1551 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1553 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1552 1554
1553 # FIXME Should go into a make.lib or something 1555 # FIXME Should go into a make.lib or something
1554 # =========================================================================== 1556 # ===========================================================================
1555 1557
1556 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1558 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1557 cmd_rmdirs = rm -rf $(rm-dirs) 1559 cmd_rmdirs = rm -rf $(rm-dirs)
1558 1560
1559 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1561 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1560 cmd_rmfiles = rm -f $(rm-files) 1562 cmd_rmfiles = rm -f $(rm-files)
1561 1563
1562 # Run depmod only if we have System.map and depmod is executable 1564 # Run depmod only if we have System.map and depmod is executable
1563 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1565 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1564 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1566 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
1565 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 1567 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
1566 1568
1567 # Create temporary dir for module support files 1569 # Create temporary dir for module support files
1568 # clean it up only when building all modules 1570 # clean it up only when building all modules
1569 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1571 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1570 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1572 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1571 1573
1572 # read all saved command lines 1574 # read all saved command lines
1573 1575
1574 targets := $(wildcard $(sort $(targets))) 1576 targets := $(wildcard $(sort $(targets)))
1575 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1577 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1576 1578
1577 ifneq ($(cmd_files),) 1579 ifneq ($(cmd_files),)
1578 $(cmd_files): ; # Do not try to update included dependency files 1580 $(cmd_files): ; # Do not try to update included dependency files
1579 include $(cmd_files) 1581 include $(cmd_files)
1580 endif 1582 endif
1581 1583
1582 endif # skip-makefile 1584 endif # skip-makefile
1583 1585
1584 PHONY += FORCE 1586 PHONY += FORCE
1585 FORCE: 1587 FORCE:
1586 1588
1587 # Declare the contents of the .PHONY variable as phony. We keep that 1589 # Declare the contents of the .PHONY variable as phony. We keep that
1588 # information in a variable so we can use it in if_changed and friends. 1590 # information in a variable so we can use it in if_changed and friends.
1589 .PHONY: $(PHONY) 1591 .PHONY: $(PHONY)
1590 1592
File was created 1 obj-y += lib/
2