1 # SPDX-License-Identifier: GPL-2.0 !! 1 VERSION = 2
2 VERSION = 6 !! 2 PATCHLEVEL = 6
3 PATCHLEVEL = 12 !! 3 SUBLEVEL = 32
4 SUBLEVEL = 0 !! 4 EXTRAVERSION = .71
5 EXTRAVERSION = -rc7 !! 5 NAME = Man-Eating Seals of Antiquity
6 NAME = Baby Opossum Posse <<
7 6
8 # *DOCUMENTATION* 7 # *DOCUMENTATION*
9 # To see a list of typical targets execute "ma 8 # To see a list of typical targets execute "make help"
10 # More info can be located in ./README 9 # More info can be located in ./README
11 # Comments in this file are targeted only to t 10 # Comments in this file are targeted only to the developer, do not
12 # expect to learn how to build the kernel read 11 # expect to learn how to build the kernel reading this file.
13 12
14 ifeq ($(filter output-sync,$(.FEATURES)),) !! 13 # Do not:
15 $(error GNU Make >= 4.0 is required. Your Make !! 14 # o use make's built-in rules and variables
16 endif !! 15 # (this increases performance and avoids hard-to-debug behaviour);
17 !! 16 # o print "Entering directory ...";
18 $(if $(filter __%, $(MAKECMDGOALS)), \ !! 17 MAKEFLAGS += -rR --no-print-directory
19 $(error targets prefixed with '__' are <<
20 <<
21 # That's our default target when none is given <<
22 PHONY := __all <<
23 __all: <<
24 18
25 # We are using a recursive build, so we need t 19 # We are using a recursive build, so we need to do a little thinking
26 # to get the ordering right. 20 # to get the ordering right.
27 # 21 #
28 # Most importantly: sub-Makefiles should only 22 # Most importantly: sub-Makefiles should only ever modify files in
29 # their own directory. If in some directory we 23 # their own directory. If in some directory we have a dependency on
30 # a file in another dir (which doesn't happen 24 # a file in another dir (which doesn't happen often, but it's often
31 # unavoidable when linking the built-in.a targ !! 25 # unavoidable when linking the built-in.o targets which finally
32 # turn into vmlinux), we will call a sub make 26 # turn into vmlinux), we will call a sub make in that other dir, and
33 # after that we are sure that everything which 27 # after that we are sure that everything which is in that other dir
34 # is now up to date. 28 # is now up to date.
35 # 29 #
36 # The only cases where we need to modify files 30 # The only cases where we need to modify files which have global
37 # effects are thus separated out and done befo 31 # effects are thus separated out and done before the recursive
38 # descending is started. They are now explicit 32 # descending is started. They are now explicitly listed as the
39 # prepare rule. 33 # prepare rule.
40 34
41 this-makefile := $(lastword $(MAKEFILE_LIST)) <<
42 abs_srctree := $(realpath $(dir $(this-makefil <<
43 abs_objtree := $(CURDIR) <<
44 <<
45 ifneq ($(sub_make_done),1) <<
46 <<
47 # Do not use make's built-in rules and variabl <<
48 # (this increases performance and avoids hard- <<
49 MAKEFLAGS += -rR <<
50 <<
51 # Avoid funny character set dependencies <<
52 unexport LC_ALL <<
53 LC_COLLATE=C <<
54 LC_NUMERIC=C <<
55 export LC_COLLATE LC_NUMERIC <<
56 <<
57 # Avoid interference with shell env settings <<
58 unexport GREP_OPTIONS <<
59 <<
60 # Beautify output <<
61 # -------------------------------------------- <<
62 # <<
63 # Most of build commands in Kbuild start with <<
64 # "quiet_cmd_*". If defined, the short log is <<
65 # that command is printed by default. <<
66 # <<
67 # e.g.) <<
68 # quiet_cmd_depmod = DEPMOD $(MODLIB) <<
69 # cmd_depmod = $(srctree)/scripts/dep <<
70 # <<
71 # A simple variant is to prefix commands with <<
72 # for commands that shall be hidden in non-ver <<
73 # <<
74 # $(Q)$(MAKE) $(build)=scripts/basic <<
75 # <<
76 # If KBUILD_VERBOSE contains 1, the whole comm <<
77 # If KBUILD_VERBOSE contains 2, the reason for <<
78 # <<
79 # To put more focus on warnings, be less verbo 35 # To put more focus on warnings, be less verbose as default
80 # Use 'make V=1' to see the full commands 36 # Use 'make V=1' to see the full commands
81 37
82 ifeq ("$(origin V)", "command line") 38 ifeq ("$(origin V)", "command line")
83 KBUILD_VERBOSE = $(V) 39 KBUILD_VERBOSE = $(V)
84 endif 40 endif
85 !! 41 ifndef KBUILD_VERBOSE
86 quiet = quiet_ !! 42 KBUILD_VERBOSE = 0
87 Q = @ <<
88 <<
89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) <<
90 quiet = <<
91 Q = <<
92 endif <<
93 <<
94 # If the user is running make -s (silent mode) <<
95 # commands <<
96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS <<
97 quiet=silent_ <<
98 override KBUILD_VERBOSE := <<
99 endif 43 endif
100 44
101 export quiet Q KBUILD_VERBOSE <<
102 <<
103 # Call a source code checker (by default, "spa 45 # Call a source code checker (by default, "sparse") as part of the
104 # C compilation. 46 # C compilation.
105 # 47 #
106 # Use 'make C=1' to enable checking of only re 48 # Use 'make C=1' to enable checking of only re-compiled files.
107 # Use 'make C=2' to enable checking of *all* s 49 # Use 'make C=2' to enable checking of *all* source files, regardless
108 # of whether they are re-compiled or not. 50 # of whether they are re-compiled or not.
109 # 51 #
110 # See the file "Documentation/dev-tools/sparse !! 52 # See the file "Documentation/sparse.txt" for more details, including
111 # including where to get the "sparse" utility. !! 53 # where to get the "sparse" utility.
112 54
113 ifeq ("$(origin C)", "command line") 55 ifeq ("$(origin C)", "command line")
114 KBUILD_CHECKSRC = $(C) 56 KBUILD_CHECKSRC = $(C)
115 endif 57 endif
116 ifndef KBUILD_CHECKSRC 58 ifndef KBUILD_CHECKSRC
117 KBUILD_CHECKSRC = 0 59 KBUILD_CHECKSRC = 0
118 endif 60 endif
119 61
120 export KBUILD_CHECKSRC !! 62 # Use make M=dir to specify directory of external module to build
121 !! 63 # Old syntax make ... SUBDIRS=$PWD is still supported
122 # Enable "clippy" (a linter) as part of the Ru !! 64 # Setting the environment variable KBUILD_EXTMOD take precedence
123 # !! 65 ifdef SUBDIRS
124 # Use 'make CLIPPY=1' to enable it. !! 66 KBUILD_EXTMOD ?= $(SUBDIRS)
125 ifeq ("$(origin CLIPPY)", "command line") <<
126 KBUILD_CLIPPY := $(CLIPPY) <<
127 endif 67 endif
128 68
129 export KBUILD_CLIPPY <<
130 <<
131 # Use make M=dir or set the environment variab <<
132 # directory of external module to build. Setti <<
133 ifeq ("$(origin M)", "command line") 69 ifeq ("$(origin M)", "command line")
134 KBUILD_EXTMOD := $(M) 70 KBUILD_EXTMOD := $(M)
135 endif 71 endif
136 72
137 $(if $(word 2, $(KBUILD_EXTMOD)), \ !! 73 # kbuild supports saving output files in a separate directory.
138 $(error building multiple external mod !! 74 # To locate output files in a separate directory two syntaxes are supported.
139 !! 75 # In both cases the working directory must be the root of the kernel src.
140 $(foreach x, % :, $(if $(findstring $x, $(KBUI <<
141 $(error module directory path cannot c <<
142 <<
143 # Remove trailing slashes <<
144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) <<
145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM <<
146 endif <<
147 <<
148 export KBUILD_EXTMOD <<
149 <<
150 # backward compatibility <<
151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC <<
152 <<
153 ifeq ("$(origin W)", "command line") <<
154 KBUILD_EXTRA_WARN := $(W) <<
155 endif <<
156 <<
157 export KBUILD_EXTRA_WARN <<
158 <<
159 # Kbuild will save output files in the current <<
160 # This does not need to match to the root of t <<
161 # <<
162 # For example, you can do this: <<
163 # <<
164 # cd /dir/to/store/output/files; make -f /dir <<
165 # <<
166 # If you want to save output files in a differ <<
167 # two syntaxes to specify it. <<
168 # <<
169 # 1) O= 76 # 1) O=
170 # Use "make O=dir/to/store/output/files/" 77 # Use "make O=dir/to/store/output/files/"
171 # 78 #
172 # 2) Set KBUILD_OUTPUT 79 # 2) Set KBUILD_OUTPUT
173 # Set the environment variable KBUILD_OUTPUT t !! 80 # Set the environment variable KBUILD_OUTPUT to point to the directory
174 # export KBUILD_OUTPUT=dir/to/store/output/fil !! 81 # where the output files shall be placed.
>> 82 # export KBUILD_OUTPUT=dir/to/store/output/files/
>> 83 # make
175 # 84 #
176 # The O= assignment takes precedence over the 85 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
177 # variable. 86 # variable.
178 87
179 # Do we want to change the working directory? <<
180 ifeq ("$(origin O)", "command line") <<
181 KBUILD_OUTPUT := $(O) <<
182 endif <<
183 88
184 ifneq ($(KBUILD_OUTPUT),) !! 89 # KBUILD_SRC is set on invocation of make in OBJ directory
185 # $(realpath ...) gets empty if the path does !! 90 # KBUILD_SRC is not intended to be used by the regular user (for now)
186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 91 ifeq ($(KBUILD_SRC),)
187 # $(realpath ...) resolves symlinks <<
188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) <<
189 $(if $(abs_objtree),,$(error failed to create <<
190 endif # ifneq ($(KBUILD_OUTPUT),) <<
191 <<
192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 <<
193 $(error source directory cannot contain spaces <<
194 endif <<
195 <<
196 export sub_make_done := 1 <<
197 <<
198 endif # sub_make_done <<
199 <<
200 ifeq ($(abs_objtree),$(CURDIR)) <<
201 # Suppress "Entering directory ..." if we are <<
202 no-print-directory := --no-print-directory <<
203 else <<
204 # Recursion to show "Entering directory ..." <<
205 need-sub-make := 1 <<
206 endif <<
207 92
208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 93 # OK, Make called in directory where kernel src resides
209 # If --no-print-directory is unset, recurse on !! 94 # Do we want to locate output files in a separate directory?
210 # You may end up recursing into __sub-make twi !! 95 ifeq ("$(origin O)", "command line")
211 # behavior change in GNU Make 4.4.1. !! 96 KBUILD_OUTPUT := $(O)
212 need-sub-make := 1 <<
213 endif 97 endif
214 98
215 ifeq ($(need-sub-make),1) !! 99 # That's our default target when none is given on the command line
216 !! 100 PHONY := _all
217 PHONY += $(MAKECMDGOALS) __sub-make !! 101 _all:
218 102
219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 103 # Cancel implicit rules on top Makefile
220 @: !! 104 $(CURDIR)/Makefile Makefile: ;
221 105
>> 106 ifneq ($(KBUILD_OUTPUT),)
222 # Invoke a second make in the output directory 107 # Invoke a second make in the output directory, passing relevant variables
223 __sub-make: !! 108 # check that the output directory actually exists
224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 109 saved-output := $(KBUILD_OUTPUT)
225 -f $(abs_srctree)/Makefile $(MAKECMDGO !! 110 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
>> 111 $(if $(KBUILD_OUTPUT),, \
>> 112 $(error output directory "$(saved-output)" does not exist))
>> 113
>> 114 PHONY += $(MAKECMDGOALS) sub-make
>> 115
>> 116 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
>> 117 $(Q)@:
>> 118
>> 119 sub-make: FORCE
>> 120 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
>> 121 KBUILD_SRC=$(CURDIR) \
>> 122 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
>> 123 $(filter-out _all sub-make,$(MAKECMDGOALS))
226 124
227 else # need-sub-make !! 125 # Leave processing to above invocation of make
>> 126 skip-makefile := 1
>> 127 endif # ifneq ($(KBUILD_OUTPUT),)
>> 128 endif # ifeq ($(KBUILD_SRC),)
228 129
229 # We process the rest of the Makefile if this 130 # We process the rest of the Makefile if this is the final invocation of make
>> 131 ifeq ($(skip-makefile),)
230 132
231 ifeq ($(abs_srctree),$(abs_objtree)) !! 133 # If building an external module we do not care about the all: rule
232 # building in the source tree !! 134 # but instead _all depend on modules
233 srctree := . !! 135 PHONY += all
234 building_out_of_srctree := <<
235 else <<
236 ifeq ($(abs_srctree)/,$(dir $(abs_objt <<
237 # building in a subdirectory o <<
238 srctree := .. <<
239 else <<
240 srctree := $(abs_srctree) <<
241 endif <<
242 building_out_of_srctree := 1 <<
243 endif <<
244 <<
245 ifneq ($(KBUILD_ABS_SRCTREE),) <<
246 srctree := $(abs_srctree) <<
247 endif <<
248 <<
249 objtree := . <<
250 <<
251 VPATH := <<
252 <<
253 ifeq ($(KBUILD_EXTMOD),) <<
254 ifdef building_out_of_srctree <<
255 VPATH := $(srctree) <<
256 endif <<
257 endif <<
258 <<
259 export building_out_of_srctree srctree objtree <<
260 <<
261 # To make sure we do not include .config for a <<
262 # catch them early, and hand them over to scri <<
263 # It is allowed to specify more targets when c <<
264 # mixing *config targets and build targets. <<
265 # For example 'make oldconfig all'. <<
266 # Detect when mixed targets is specified, and <<
267 # of make so .config is not included in this c <<
268 <<
269 version_h := include/generated/uapi/linux/vers <<
270 <<
271 clean-targets := %clean mrproper cleandocs <<
272 no-dot-config-targets := $(clean-targets) \ <<
273 cscope gtags TAGS tag <<
274 $(version_h) headers <<
275 %asm-generic kernelve <<
276 outputmakefile rustav <<
277 no-sync-config-targets := $(no-dot-config-targ <<
278 image_name <<
279 single-targets := %.a %.i %.ko %.lds %.ll %.ls <<
280 <<
281 config-build := <<
282 mixed-build := <<
283 need-config := 1 <<
284 may-sync-config := 1 <<
285 single-build := <<
286 <<
287 ifneq ($(filter $(no-dot-config-targets), $(MA <<
288 ifeq ($(filter-out $(no-dot-config-targets <<
289 need-config := <<
290 endif <<
291 endif <<
292 <<
293 ifneq ($(filter $(no-sync-config-targets), $(M <<
294 ifeq ($(filter-out $(no-sync-config-target <<
295 may-sync-config := <<
296 endif <<
297 endif <<
298 <<
299 need-compiler := $(may-sync-config) <<
300 <<
301 ifneq ($(KBUILD_EXTMOD),) <<
302 may-sync-config := <<
303 endif <<
304 <<
305 ifeq ($(KBUILD_EXTMOD),) 136 ifeq ($(KBUILD_EXTMOD),)
306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 137 _all: all
307 config-build := 1 !! 138 else
308 ifneq ($(words $(MAKECMDGOALS)),1) !! 139 _all: modules
309 mixed-build := 1 <<
310 endif <<
311 endif <<
312 endif <<
313 <<
314 # We cannot build single targets and the other <<
315 ifneq ($(filter $(single-targets), $(MAKECMDGO <<
316 single-build := 1 <<
317 ifneq ($(filter-out $(single-targets), $(M <<
318 mixed-build := 1 <<
319 endif <<
320 endif <<
321 <<
322 # For "make -j clean all", "make -j mrproper d <<
323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL <<
324 ifneq ($(filter-out $(clean-targets),$(MAK <<
325 mixed-build := 1 <<
326 endif <<
327 endif <<
328 <<
329 # install and modules_install need also be pro <<
330 ifneq ($(filter install,$(MAKECMDGOALS)),) <<
331 ifneq ($(filter modules_install,$(MAKECMDG <<
332 mixed-build := 1 <<
333 endif <<
334 endif 140 endif
335 141
336 ifdef mixed-build !! 142 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
337 # ============================================ !! 143 objtree := $(CURDIR)
338 # We're called with mixed targets (*config and !! 144 src := $(srctree)
339 # Handle them one by one. !! 145 obj := $(objtree)
340 146
341 PHONY += $(MAKECMDGOALS) __build_one_by_one !! 147 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
342 148
343 $(MAKECMDGOALS): __build_one_by_one !! 149 export srctree objtree VPATH
344 @: <<
345 150
346 __build_one_by_one: <<
347 $(Q)set -e; \ <<
348 for i in $(MAKECMDGOALS); do \ <<
349 $(MAKE) -f $(srctree)/Makefile <<
350 done <<
351 151
352 else # !mixed-build !! 152 # SUBARCH tells the usermode build what the underlying arch is. That is set
>> 153 # first, and if a usermode build is happening, the "ARCH=um" on the command
>> 154 # line overrides the setting of ARCH below. If a native build is happening,
>> 155 # then ARCH is assigned, getting whatever value it gets normally, and
>> 156 # SUBARCH is subsequently ignored.
353 157
354 include $(srctree)/scripts/Kbuild.include !! 158 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
355 !! 159 -e s/arm.*/arm/ -e s/sa110/arm/ \
356 # Read KERNELRELEASE from include/config/kerne !! 160 -e s/s390x/s390/ -e s/parisc64/parisc/ \
357 KERNELRELEASE = $(call read-file, include/conf !! 161 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. !! 162 -e s/sh[234].*/sh/ )
359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA <<
360 <<
361 include $(srctree)/scripts/subarch.include <<
362 163
363 # Cross compiling and selecting different set 164 # Cross compiling and selecting different set of gcc/bin-utils
364 # -------------------------------------------- 165 # ---------------------------------------------------------------------------
365 # 166 #
366 # When performing cross compilation for other 167 # When performing cross compilation for other architectures ARCH shall be set
367 # to the target architecture. (See arch/* for 168 # to the target architecture. (See arch/* for the possibilities).
368 # ARCH can be set during invocation of make: 169 # ARCH can be set during invocation of make:
369 # make ARCH=arm64 !! 170 # make ARCH=ia64
370 # Another way is to have ARCH set in the envir 171 # Another way is to have ARCH set in the environment.
371 # The default ARCH is the host where make is e 172 # The default ARCH is the host where make is executed.
372 173
373 # CROSS_COMPILE specify the prefix used for al 174 # CROSS_COMPILE specify the prefix used for all executables used
374 # during compilation. Only gcc and related bin 175 # during compilation. Only gcc and related bin-utils executables
375 # are prefixed with $(CROSS_COMPILE). 176 # are prefixed with $(CROSS_COMPILE).
376 # CROSS_COMPILE can be set on the command line 177 # CROSS_COMPILE can be set on the command line
377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 178 # make CROSS_COMPILE=ia64-linux-
378 # Alternatively CROSS_COMPILE can be set in th 179 # Alternatively CROSS_COMPILE can be set in the environment.
379 # Default value for CROSS_COMPILE is not to pr 180 # Default value for CROSS_COMPILE is not to prefix executables
380 # Note: Some architectures assign CROSS_COMPIL 181 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
>> 182 export KBUILD_BUILDHOST := $(SUBARCH)
381 ARCH ?= $(SUBARCH) 183 ARCH ?= $(SUBARCH)
>> 184 CROSS_COMPILE ?=
382 185
383 # Architecture as present in compile.h 186 # Architecture as present in compile.h
384 UTS_MACHINE := $(ARCH) 187 UTS_MACHINE := $(ARCH)
385 SRCARCH := $(ARCH) 188 SRCARCH := $(ARCH)
386 189
387 # Additional ARCH settings for x86 190 # Additional ARCH settings for x86
388 ifeq ($(ARCH),i386) 191 ifeq ($(ARCH),i386)
389 SRCARCH := x86 192 SRCARCH := x86
390 endif 193 endif
391 ifeq ($(ARCH),x86_64) 194 ifeq ($(ARCH),x86_64)
392 SRCARCH := x86 195 SRCARCH := x86
393 endif 196 endif
394 197
395 # Additional ARCH settings for sparc 198 # Additional ARCH settings for sparc
396 ifeq ($(ARCH),sparc32) <<
397 SRCARCH := sparc <<
398 endif <<
399 ifeq ($(ARCH),sparc64) 199 ifeq ($(ARCH),sparc64)
400 SRCARCH := sparc 200 SRCARCH := sparc
401 endif 201 endif
402 202
403 # Additional ARCH settings for parisc !! 203 # Additional ARCH settings for sh
404 ifeq ($(ARCH),parisc64) !! 204 ifeq ($(ARCH),sh64)
405 SRCARCH := parisc !! 205 SRCARCH := sh
406 endif 206 endif
407 207
408 export cross_compiling := !! 208 # Where to locate arch specific headers
409 ifneq ($(SRCARCH),$(SUBARCH)) !! 209 hdr-arch := $(SRCARCH)
410 cross_compiling := 1 !! 210
>> 211 ifeq ($(ARCH),m68knommu)
>> 212 hdr-arch := m68k
411 endif 213 endif
412 214
413 KCONFIG_CONFIG ?= .config 215 KCONFIG_CONFIG ?= .config
414 export KCONFIG_CONFIG <<
415 216
416 # SHELL used by kbuild 217 # SHELL used by kbuild
417 CONFIG_SHELL := sh !! 218 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
>> 219 else if [ -x /bin/bash ]; then echo /bin/bash; \
>> 220 else echo sh; fi ; fi)
>> 221
>> 222 HOSTCC = gcc
>> 223 HOSTCXX = g++
>> 224 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
>> 225 HOSTCXXFLAGS = -O2
>> 226
>> 227 # Decide whether to build built-in, modular, or both.
>> 228 # Normally, just do built-in.
>> 229
>> 230 KBUILD_MODULES :=
>> 231 KBUILD_BUILTIN := 1
>> 232
>> 233 # If we have only "make modules", don't compile built-in objects.
>> 234 # When we're building modules with modversions, we need to consider
>> 235 # the built-in objects during the descend as well, in order to
>> 236 # make sure the checksums are up to date before we record them.
>> 237
>> 238 ifeq ($(MAKECMDGOALS),modules)
>> 239 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
>> 240 endif
418 241
419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS !! 242 # If we have "make <whatever> modules", compile modules
420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG !! 243 # in addition to whatever we do anyway.
421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d !! 244 # Just "make" or "make all" shall build modules as well
422 245
423 ifneq ($(LLVM),) !! 246 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
424 ifneq ($(filter %/,$(LLVM)),) !! 247 KBUILD_MODULES := 1
425 LLVM_PREFIX := $(LLVM) !! 248 endif
426 else ifneq ($(filter -%,$(LLVM)),) !! 249
427 LLVM_SUFFIX := $(LLVM) !! 250 ifeq ($(MAKECMDGOALS),)
>> 251 KBUILD_MODULES := 1
428 endif 252 endif
429 253
430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) !! 254 export KBUILD_MODULES KBUILD_BUILTIN
431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) !! 255 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
>> 256
>> 257 # Beautify output
>> 258 # ---------------------------------------------------------------------------
>> 259 #
>> 260 # Normally, we echo the whole command before executing it. By making
>> 261 # that echo $($(quiet)$(cmd)), we now have the possibility to set
>> 262 # $(quiet) to choose other forms of output instead, e.g.
>> 263 #
>> 264 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
>> 265 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
>> 266 #
>> 267 # If $(quiet) is empty, the whole command will be printed.
>> 268 # If it is set to "quiet_", only the short version will be printed.
>> 269 # If it is set to "silent_", nothing will be printed at all, since
>> 270 # the variable $(silent_cmd_cc_o_c) doesn't exist.
>> 271 #
>> 272 # A simple variant is to prefix commands with $(Q) - that's useful
>> 273 # for commands that shall be hidden in non-verbose mode.
>> 274 #
>> 275 # $(Q)ln $@ :<
>> 276 #
>> 277 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
>> 278 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
>> 279
>> 280 ifeq ($(KBUILD_VERBOSE),1)
>> 281 quiet =
>> 282 Q =
432 else 283 else
433 HOSTCC = gcc !! 284 quiet=quiet_
434 HOSTCXX = g++ !! 285 Q = @
435 endif 286 endif
436 HOSTRUSTC = rustc <<
437 HOSTPKG_CONFIG = pkg-config <<
438 287
439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 288 # If the user is running make -s (silent mode), suppress echoing of
440 -O2 -fomit-frame-poin !! 289 # commands
441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) !! 290
442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) !! 291 ifneq ($(findstring s,$(MAKEFLAGS)),)
443 !! 292 quiet=silent_
444 # These flags apply to all Rust code in the tr !! 293 endif
445 # host programs. !! 294
446 export rust_common_flags := --edition=2021 \ !! 295 export quiet Q KBUILD_VERBOSE
447 -Zbinary_dep_depin !! 296
448 -Astable_features !! 297
449 -Dunsafe_op_in_uns !! 298 # Look for make include files relative to root of kernel src
450 -Dnon_ascii_idents !! 299 MAKEFLAGS += --include-dir=$(srctree)
451 -Wrust_2018_idioms !! 300
452 -Wunreachable_pub !! 301 # We need some generic definitions (do not try to remake the file).
453 -Wmissing_docs \ !! 302 $(srctree)/scripts/Kbuild.include: ;
454 -Wrustdoc::missing !! 303 include $(srctree)/scripts/Kbuild.include
455 -Wclippy::all \ <<
456 -Wclippy::mut_mut <<
457 -Wclippy::needless <<
458 -Wclippy::needless <<
459 -Wclippy::no_mangl <<
460 -Wclippy::dbg_macr <<
461 <<
462 KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS <<
463 $(HOSTCFLAGS) -I $(srct <<
464 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CF <<
465 -I $(srctree)/scripts/i <<
466 KBUILD_HOSTRUSTFLAGS := $(rust_common_flags) - <<
467 -Zallow-features= $(HO <<
468 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(H <<
469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST <<
470 304
471 # Make variables (CC, etc...) 305 # Make variables (CC, etc...)
472 CPP = $(CC) -E !! 306
473 ifneq ($(LLVM),) !! 307 AS = $(CROSS_COMPILE)as
474 CC = $(LLVM_PREFIX)clang$(LLVM_SU <<
475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S <<
476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ <<
477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ <<
478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( <<
479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( <<
480 READELF = $(LLVM_PREFIX)llvm-readelf$( <<
481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL <<
482 else <<
483 CC = $(CROSS_COMPILE)gcc <<
484 LD = $(CROSS_COMPILE)ld 308 LD = $(CROSS_COMPILE)ld
>> 309 CC = $(CROSS_COMPILE)gcc
>> 310 CPP = $(CC) -E
485 AR = $(CROSS_COMPILE)ar 311 AR = $(CROSS_COMPILE)ar
486 NM = $(CROSS_COMPILE)nm 312 NM = $(CROSS_COMPILE)nm
>> 313 STRIP = $(CROSS_COMPILE)strip
487 OBJCOPY = $(CROSS_COMPILE)objcopy 314 OBJCOPY = $(CROSS_COMPILE)objcopy
488 OBJDUMP = $(CROSS_COMPILE)objdump 315 OBJDUMP = $(CROSS_COMPILE)objdump
489 READELF = $(CROSS_COMPILE)readelf <<
490 STRIP = $(CROSS_COMPILE)strip <<
491 endif <<
492 RUSTC = rustc <<
493 RUSTDOC = rustdoc <<
494 RUSTFMT = rustfmt <<
495 CLIPPY_DRIVER = clippy-driver <<
496 BINDGEN = bindgen <<
497 PAHOLE = pahole <<
498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve <<
499 LEX = flex <<
500 YACC = bison <<
501 AWK = awk 316 AWK = awk
>> 317 GENKSYMS = scripts/genksyms/genksyms
502 INSTALLKERNEL := installkernel 318 INSTALLKERNEL := installkernel
>> 319 DEPMOD = /sbin/depmod
>> 320 KALLSYMS = scripts/kallsyms
503 PERL = perl 321 PERL = perl
504 PYTHON3 = python3 <<
505 CHECK = sparse 322 CHECK = sparse
506 BASH = bash <<
507 KGZIP = gzip <<
508 KBZIP2 = bzip2 <<
509 KLZOP = lzop <<
510 LZMA = lzma <<
511 LZ4 = lz4c <<
512 XZ = xz <<
513 ZSTD = zstd <<
514 323
515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 324 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
516 -Wbitwise -Wno-return-void - !! 325 -Wbitwise -Wno-return-void $(CF)
517 NOSTDINC_FLAGS := !! 326 MODFLAGS = -DMODULE
518 CFLAGS_MODULE = !! 327 CFLAGS_MODULE = $(MODFLAGS)
519 RUSTFLAGS_MODULE = !! 328 AFLAGS_MODULE = $(MODFLAGS)
520 AFLAGS_MODULE = !! 329 LDFLAGS_MODULE = -T $(srctree)/scripts/module-common.lds
521 LDFLAGS_MODULE = <<
522 CFLAGS_KERNEL = 330 CFLAGS_KERNEL =
523 RUSTFLAGS_KERNEL = <<
524 AFLAGS_KERNEL = 331 AFLAGS_KERNEL =
525 LDFLAGS_vmlinux = !! 332 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
526 333
527 # Use USERINCLUDE when you must reference the <<
528 USERINCLUDE := \ <<
529 -I$(srctree)/arch/$(SRCARCH)/i <<
530 -I$(objtree)/arch/$(SRCARCH)/i <<
531 -I$(srctree)/include/uapi \ <<
532 -I$(objtree)/include/generated <<
533 -include $(srctree)/include/li <<
534 -include $(srctree)/include/li <<
535 334
536 # Use LINUXINCLUDE when you must reference the 335 # Use LINUXINCLUDE when you must reference the include/ directory.
537 # Needed to be compatible with the O= option 336 # Needed to be compatible with the O= option
538 LINUXINCLUDE := \ !! 337 LINUXINCLUDE := -Iinclude \
539 -I$(srctree)/arch/$(SRCARCH)/i !! 338 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
540 -I$(objtree)/arch/$(SRCARCH)/i !! 339 -I$(srctree)/arch/$(hdr-arch)/include \
541 $(if $(building_out_of_srctree !! 340 -include include/linux/autoconf.h
542 -I$(objtree)/include \ <<
543 $(USERINCLUDE) <<
544 <<
545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE <<
546 <<
547 KBUILD_CFLAGS := <<
548 KBUILD_CFLAGS += -std=gnu11 <<
549 KBUILD_CFLAGS += -fshort-wchar <<
550 KBUILD_CFLAGS += -funsigned-char <<
551 KBUILD_CFLAGS += -fno-common <<
552 KBUILD_CFLAGS += -fno-PIE <<
553 KBUILD_CFLAGS += -fno-strict-aliasing <<
554 341
555 KBUILD_CPPFLAGS := -D__KERNEL__ 342 KBUILD_CPPFLAGS := -D__KERNEL__
556 KBUILD_RUSTFLAGS := $(rust_common_flags) \ <<
557 -Cpanic=abort -Cembed-bitc <<
558 -Cforce-unwind-tables=n -C <<
559 -Csymbol-mangling-version= <<
560 -Crelocation-model=static <<
561 -Zfunction-sections=n \ <<
562 -Wclippy::float_arithmetic <<
563 <<
564 KBUILD_AFLAGS_KERNEL := <<
565 KBUILD_CFLAGS_KERNEL := <<
566 KBUILD_RUSTFLAGS_KERNEL := <<
567 KBUILD_AFLAGS_MODULE := -DMODULE <<
568 KBUILD_CFLAGS_MODULE := -DMODULE <<
569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE <<
570 KBUILD_LDFLAGS_MODULE := <<
571 KBUILD_LDFLAGS := <<
572 CLANG_FLAGS := <<
573 <<
574 ifeq ($(KBUILD_CLIPPY),1) <<
575 RUSTC_OR_CLIPPY_QUIET := CLIPPY <<
576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) <<
577 else <<
578 RUSTC_OR_CLIPPY_QUIET := RUSTC <<
579 RUSTC_OR_CLIPPY = $(RUSTC) <<
580 endif <<
581 343
582 # Allows the usage of unstable features in sta !! 344 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
583 export RUSTC_BOOTSTRAP := 1 !! 345 -fno-strict-aliasing -fno-common \
>> 346 -Werror-implicit-function-declaration \
>> 347 -Wno-format-security \
>> 348 -fno-delete-null-pointer-checks
>> 349 KBUILD_AFLAGS := -D__ASSEMBLY__
584 350
585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K !! 351 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q !! 352 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS !! 353 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF !! 354
589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ !! 355 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD !! 356 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS !! 357 export CPP AR NM STRIP OBJCOPY OBJDUMP
592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS !! 358 export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
593 !! 359 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC !! 360
595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU !! 361 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF !! 362 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 363 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 364
599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 365 # When compiling out-of-tree modules, put MODVERDIR in the module
>> 366 # tree rather than in the kernel tree. The kernel tree might
>> 367 # even be read-only.
>> 368 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
600 369
601 # Files to ignore in find ... statements 370 # Files to ignore in find ... statements
602 371
603 export RCS_FIND_IGNORE := \( -name SCCS -o -na !! 372 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
604 -name CVS -o -name . !! 373 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
605 -prune -o <<
606 374
607 # ============================================ 375 # ===========================================================================
608 # Rules shared between *config targets and bui 376 # Rules shared between *config targets and build targets
609 377
610 # Basic helpers built in scripts/basic/ !! 378 # Basic helpers built in scripts/
611 PHONY += scripts_basic 379 PHONY += scripts_basic
612 scripts_basic: 380 scripts_basic:
613 $(Q)$(MAKE) $(build)=scripts/basic 381 $(Q)$(MAKE) $(build)=scripts/basic
614 382
>> 383 # To avoid any implicit rule to kick in, define an empty command.
>> 384 scripts/basic/%: scripts_basic ;
>> 385
615 PHONY += outputmakefile 386 PHONY += outputmakefile
616 ifdef building_out_of_srctree <<
617 # Before starting out-of-tree build, make sure <<
618 # outputmakefile generates a Makefile in the o 387 # outputmakefile generates a Makefile in the output directory, if using a
619 # separate output directory. This allows conve 388 # separate output directory. This allows convenient use of make in the
620 # output directory. 389 # output directory.
621 # At the same time when output Makefile genera <<
622 # ignore whole output directory <<
623 <<
624 quiet_cmd_makefile = GEN Makefile <<
625 cmd_makefile = { \ <<
626 echo "\# Automatically generated by $( <<
627 echo "include $(srctree)/Makefile"; \ <<
628 } > Makefile <<
629 <<
630 outputmakefile: 390 outputmakefile:
631 @if [ -f $(srctree)/.config -o \ !! 391 ifneq ($(KBUILD_SRC),)
632 -d $(srctree)/include/config <<
633 -d $(srctree)/arch/$(SRCARCH) <<
634 echo >&2 "***"; \ <<
635 echo >&2 "*** The source tree <<
636 echo >&2 "*** in $(abs_srctree <<
637 echo >&2 "***"; \ <<
638 false; \ <<
639 fi <<
640 $(Q)ln -fsn $(srctree) source 392 $(Q)ln -fsn $(srctree) source
641 $(call cmd,makefile) !! 393 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
642 $(Q)test -e .gitignore || \ !! 394 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
643 { echo "# this is build directory, ign <<
644 endif 395 endif
645 396
646 # The expansion should be delayed until arch/$ !! 397 # To make sure we do not include .config for any of the *config targets
647 # Some architectures define CROSS_COMPILE in a !! 398 # catch them early, and hand them over to scripts/kconfig/Makefile
648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r !! 399 # It is allowed to specify more targets when calling make, including
649 # need export), and from include/config/auto.c !! 400 # mixing *config targets and build targets.
650 # upgrade. !! 401 # For example 'make oldconfig all'.
651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 402 # Detect when mixed targets is specified, and make a second invocation
652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell !! 403 # of make so .config is not included in this case either (for *config).
653 404
654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), !! 405 no-dot-config-targets := clean mrproper distclean \
655 include $(srctree)/scripts/Makefile.clang !! 406 cscope TAGS tags help %docs check% \
>> 407 include/linux/version.h headers_% \
>> 408 kernelrelease kernelversion
>> 409
>> 410 config-targets := 0
>> 411 mixed-targets := 0
>> 412 dot-config := 1
>> 413
>> 414 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
>> 415 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
>> 416 dot-config := 0
>> 417 endif
656 endif 418 endif
657 419
658 # Include this also for config targets because !! 420 ifeq ($(KBUILD_EXTMOD),)
659 # cc-cross-prefix to determine CROSS_COMPILE. !! 421 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
660 ifdef need-compiler !! 422 config-targets := 1
661 include $(srctree)/scripts/Makefile.compiler !! 423 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
>> 424 mixed-targets := 1
>> 425 endif
>> 426 endif
662 endif 427 endif
663 428
664 ifdef config-build !! 429 ifeq ($(mixed-targets),1)
>> 430 # ===========================================================================
>> 431 # We're called with mixed targets (*config and build targets).
>> 432 # Handle them one by one.
>> 433
>> 434 %:: FORCE
>> 435 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
>> 436
>> 437 else
>> 438 ifeq ($(config-targets),1)
665 # ============================================ 439 # ===========================================================================
666 # *config targets only - make sure prerequisit 440 # *config targets only - make sure prerequisites are updated, and descend
667 # in scripts/kconfig to make the *config targe 441 # in scripts/kconfig to make the *config target
668 442
669 # Read arch-specific Makefile to set KBUILD_DE !! 443 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
670 # KBUILD_DEFCONFIG may point out an alternativ 444 # KBUILD_DEFCONFIG may point out an alternative default configuration
671 # used for 'make defconfig' 445 # used for 'make defconfig'
672 include $(srctree)/arch/$(SRCARCH)/Makefile 446 include $(srctree)/arch/$(SRCARCH)/Makefile
673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 447 export KBUILD_DEFCONFIG KBUILD_KCONFIG
674 448
675 config: outputmakefile scripts_basic FORCE !! 449 config: scripts_basic outputmakefile FORCE
>> 450 $(Q)mkdir -p include/linux include/config
676 $(Q)$(MAKE) $(build)=scripts/kconfig $ 451 $(Q)$(MAKE) $(build)=scripts/kconfig $@
677 452
678 %config: outputmakefile scripts_basic FORCE !! 453 %config: scripts_basic outputmakefile FORCE
>> 454 $(Q)mkdir -p include/linux include/config
679 $(Q)$(MAKE) $(build)=scripts/kconfig $ 455 $(Q)$(MAKE) $(build)=scripts/kconfig $@
680 456
681 else #!config-build !! 457 else
682 # ============================================ 458 # ===========================================================================
683 # Build targets only - this includes vmlinux, !! 459 # Build targets only - this includes vmlinux, arch specific targets, clean
684 # targets and others. In general all targets e 460 # targets and others. In general all targets except *config targets.
685 461
686 # If building an external module we do not car <<
687 # but instead __all depend on modules <<
688 PHONY += all <<
689 ifeq ($(KBUILD_EXTMOD),) 462 ifeq ($(KBUILD_EXTMOD),)
690 __all: all !! 463 # Additional helpers built in scripts/
691 else !! 464 # Carefully list dependencies so we do not try to build scripts twice
692 __all: modules !! 465 # in parallel
693 endif !! 466 PHONY += scripts
694 !! 467 scripts: scripts_basic include/config/auto.conf
695 targets := !! 468 $(Q)$(MAKE) $(build)=$(@)
696 <<
697 # Decide whether to build built-in, modular, o <<
698 # Normally, just do built-in. <<
699 <<
700 KBUILD_MODULES := <<
701 KBUILD_BUILTIN := 1 <<
702 <<
703 # If we have only "make modules", don't compil <<
704 ifeq ($(MAKECMDGOALS),modules) <<
705 KBUILD_BUILTIN := <<
706 endif <<
707 <<
708 # If we have "make <whatever> modules", compil <<
709 # in addition to whatever we do anyway. <<
710 # Just "make" or "make all" shall build module <<
711 <<
712 ifneq ($(filter all modules nsdeps %compile_co <<
713 KBUILD_MODULES := 1 <<
714 endif <<
715 <<
716 ifeq ($(MAKECMDGOALS),) <<
717 KBUILD_MODULES := 1 <<
718 endif <<
719 <<
720 export KBUILD_MODULES KBUILD_BUILTIN <<
721 <<
722 ifdef need-config <<
723 include include/config/auto.conf <<
724 endif <<
725 469
726 ifeq ($(KBUILD_EXTMOD),) <<
727 # Objects we will link into vmlinux / subdirs 470 # Objects we will link into vmlinux / subdirs we need to visit
728 core-y := !! 471 init-y := init/
729 drivers-y := !! 472 drivers-y := drivers/ sound/ firmware/
>> 473 net-y := net/
730 libs-y := lib/ 474 libs-y := lib/
>> 475 core-y := usr/
731 endif # KBUILD_EXTMOD 476 endif # KBUILD_EXTMOD
732 477
733 # The all: target is the default when no targe !! 478 ifeq ($(dot-config),1)
734 # command line. !! 479 # Read in config
735 # This allow a user to issue only 'make' to bu !! 480 -include include/config/auto.conf
736 # Defaults to vmlinux, but the arch makefile u <<
737 all: vmlinux <<
738 <<
739 CFLAGS_GCOV := -fprofile-arcs -ftest-cover <<
740 ifdef CONFIG_CC_IS_GCC <<
741 CFLAGS_GCOV += -fno-tree-loop-im <<
742 endif <<
743 export CFLAGS_GCOV <<
744 481
745 # The arch Makefiles can override CC_FLAGS_FTR !! 482 ifeq ($(KBUILD_EXTMOD),)
746 ifdef CONFIG_FUNCTION_TRACER !! 483 # Read in dependencies to all Kconfig* files, make sure to run
747 CC_FLAGS_FTRACE := -pg !! 484 # oldconfig if changes are detected.
748 endif !! 485 -include include/config/auto.conf.cmd
749 !! 486
750 include $(srctree)/arch/$(SRCARCH)/Makefile !! 487 # To avoid any implicit rule to kick in, define an empty command
751 !! 488 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
752 ifdef need-config !! 489
753 ifdef may-sync-config !! 490 # If .config is newer than include/config/auto.conf, someone tinkered
754 # Read in dependencies to all Kconfig* files, !! 491 # with it and forgot to run make oldconfig.
755 # changes are detected. This should be include !! 492 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
756 # because some architectures define CROSS_COMP !! 493 # we execute the config step to be sure to catch updated Kconfig files
757 include include/config/auto.conf.cmd !! 494 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
758 !! 495 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
759 $(KCONFIG_CONFIG): !! 496 else
760 @echo >&2 '***' !! 497 # external modules needs include/linux/autoconf.h and include/config/auto.conf
761 @echo >&2 '*** Configuration file "$@" !! 498 # but do not care if they are up-to-date. Use auto.conf to trigger the test
762 @echo >&2 '***' <<
763 @echo >&2 '*** Please run some configu <<
764 @echo >&2 '*** "make menuconfig" or "m <<
765 @echo >&2 '***' <<
766 @/bin/false <<
767 <<
768 # The actual configuration files used during t <<
769 # include/generated/ and include/config/. Upda <<
770 # include/config/auto.conf (which mirrors .con <<
771 # <<
772 # This exploits the 'multi-target pattern rule <<
773 # The syncconfig should be executed only once <<
774 # (Note: use the grouped target '&:' when we b <<
775 # <<
776 # Do not use $(call cmd,...) here. That would <<
777 # so you cannot notice that Kconfig is waiting <<
778 %/config/auto.conf %/config/auto.conf.cmd %/ge <<
779 $(Q)$(kecho) " SYNC $@" <<
780 $(Q)$(MAKE) -f $(srctree)/Makefile syn <<
781 else # !may-sync-config <<
782 # External modules and some install targets ne <<
783 # and include/config/auto.conf but do not care <<
784 # Use auto.conf to trigger the test <<
785 PHONY += include/config/auto.conf 499 PHONY += include/config/auto.conf
786 500
787 include/config/auto.conf: 501 include/config/auto.conf:
788 @test -e include/generated/autoconf.h !! 502 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \
789 echo >&2; !! 503 echo; \
790 echo >&2 " ERROR: Kernel configuratio !! 504 echo " ERROR: Kernel configuration is invalid."; \
791 echo >&2 " include/generated/a !! 505 echo " include/linux/autoconf.h or $@ are missing."; \
792 echo >&2 " Run 'make oldconfig !! 506 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
793 echo >&2 ; !! 507 echo; \
794 /bin/false) 508 /bin/false)
795 509
796 endif # may-sync-config !! 510 endif # KBUILD_EXTMOD
797 endif # need-config <<
798 511
799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 512 else
>> 513 # Dummy target needed, because used as prerequisite
>> 514 include/config/auto.conf: ;
>> 515 endif # $(dot-config)
>> 516
>> 517 # The all: target is the default when no target is given on the
>> 518 # command line.
>> 519 # This allow a user to issue only 'make' to build a kernel including modules
>> 520 # Defaults vmlinux but it is usually overridden in the arch makefile
>> 521 all: vmlinux
800 522
801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE !! 523 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
802 KBUILD_CFLAGS += -O2 !! 524 KBUILD_CFLAGS += -Os
803 KBUILD_RUSTFLAGS += -Copt-level=2 !! 525 else
804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE !! 526 KBUILD_CFLAGS += -O2
805 KBUILD_CFLAGS += -Os <<
806 KBUILD_RUSTFLAGS += -Copt-level=s <<
807 endif 527 endif
808 528
809 # Always set `debug-assertions` and `overflow- !! 529 include $(srctree)/arch/$(SRCARCH)/Makefile
810 # depends on `opt-level` and `debug-assertions <<
811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( <<
812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C <<
813 530
814 # Tell gcc to never replace conditional load w !! 531 ifneq ($(CONFIG_FRAME_WARN),0)
815 ifdef CONFIG_CC_IS_GCC !! 532 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
816 # gcc-10 renamed --param=allow-store-data-race <<
817 # -fno-allow-store-data-races. <<
818 KBUILD_CFLAGS += $(call cc-option,--param=al <<
819 KBUILD_CFLAGS += $(call cc-option,-fno-allow <<
820 endif 533 endif
821 534
822 ifdef CONFIG_READABLE_ASM !! 535 # Force gcc to behave correct even for buggy distributions
823 # Disable optimizations that make assembler li !! 536 ifndef CONFIG_CC_STACKPROTECTOR
824 # reorder blocks reorders the control in the f !! 537 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
825 # ipa clone creates specialized cloned functio <<
826 # partial inlining inlines only parts of funct <<
827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- <<
828 endif 538 endif
829 539
830 stackp-flags-y !! 540 # This warning generated too much noise in a regular build.
831 stackp-flags-$(CONFIG_STACKPROTECTOR) !! 541 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
832 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) <<
833 <<
834 KBUILD_CFLAGS += $(stackp-flags-y) <<
835 <<
836 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning <<
837 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) <<
838 542
839 ifdef CONFIG_FRAME_POINTER 543 ifdef CONFIG_FRAME_POINTER
840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 544 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y <<
842 else 545 else
843 # Some targets (ARM with Thumb2, for example), <<
844 # pointers. For those, we don't have FUNCTION <<
845 # select FRAME_POINTER. However, FUNCTION_TRA <<
846 # incompatible with -fomit-frame-pointer with <<
847 # -fomit-frame-pointer with FUNCTION_TRACER. <<
848 # In the Rust target specification, "frame-poi <<
849 # to "may-omit". <<
850 ifndef CONFIG_FUNCTION_TRACER <<
851 KBUILD_CFLAGS += -fomit-frame-pointer 546 KBUILD_CFLAGS += -fomit-frame-pointer
852 endif 547 endif
853 endif <<
854 <<
855 # Initialize all stack variables with a 0xAA p <<
856 ifdef CONFIG_INIT_STACK_ALL_PATTERN <<
857 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat <<
858 endif <<
859 <<
860 # Initialize all stack variables with a zero v <<
861 ifdef CONFIG_INIT_STACK_ALL_ZERO <<
862 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer <<
863 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER <<
864 # https://github.com/llvm/llvm-project/issues/ <<
865 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi <<
866 export CC_AUTO_VAR_INIT_ZERO_ENABLER <<
867 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA <<
868 endif <<
869 endif <<
870 <<
871 # While VLAs have been removed, GCC produces u <<
872 # for the randomize_kstack_offset feature. Dis <<
873 KBUILD_CFLAGS += $(call cc-option, -fno-stac <<
874 548
875 # Clear used registers at func exit (to reduce !! 549 ifdef CONFIG_DEBUG_INFO
876 ifdef CONFIG_ZERO_CALL_USED_REGS !! 550 KBUILD_CFLAGS += -g
877 KBUILD_CFLAGS += -fzero-call-used-regs=used- !! 551 KBUILD_AFLAGS += -gdwarf-2
878 endif 552 endif
879 553
880 ifdef CONFIG_FUNCTION_TRACER 554 ifdef CONFIG_FUNCTION_TRACER
881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 555 KBUILD_CFLAGS += -pg
882 CC_FLAGS_FTRACE += -mrecord-mcount <<
883 ifdef CONFIG_HAVE_NOP_MCOUNT <<
884 ifeq ($(call cc-option-yn, -mnop-mcount),y <<
885 CC_FLAGS_FTRACE += -mnop-mcount <<
886 CC_FLAGS_USING += -DCC_USING_NOP_MCOU <<
887 endif <<
888 endif <<
889 endif <<
890 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL <<
891 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT <<
892 CC_FLAGS_USING += -DCC_USING_NOP_MCOU <<
893 endif <<
894 endif <<
895 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT <<
896 ifdef CONFIG_HAVE_C_RECORDMCOUNT <<
897 BUILD_C_RECORDMCOUNT := y <<
898 export BUILD_C_RECORDMCOUNT <<
899 endif <<
900 endif <<
901 ifdef CONFIG_HAVE_FENTRY <<
902 # s390-linux-gnu-gcc did not support -mfentr <<
903 ifeq ($(call cc-option-yn, -mfentry),y) <<
904 CC_FLAGS_FTRACE += -mfentry <<
905 CC_FLAGS_USING += -DCC_USING_FENTRY <<
906 endif <<
907 endif <<
908 export CC_FLAGS_FTRACE <<
909 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA <<
910 KBUILD_AFLAGS += $(CC_FLAGS_USING) <<
911 endif 556 endif
912 557
913 # We trigger additional mismatches with less i 558 # We trigger additional mismatches with less inlining
914 ifdef CONFIG_DEBUG_SECTION_MISMATCH 559 ifdef CONFIG_DEBUG_SECTION_MISMATCH
915 KBUILD_CFLAGS += -fno-inline-functions-called- !! 560 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
916 endif <<
917 <<
918 # `rustc`'s `-Zfunction-sections` applies to d <<
919 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION <<
920 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f <<
921 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections <<
922 LDFLAGS_vmlinux += --gc-sections <<
923 endif <<
924 <<
925 ifdef CONFIG_SHADOW_CALL_STACK <<
926 ifndef CONFIG_DYNAMIC_SCS <<
927 CC_FLAGS_SCS := -fsanitize=shadow-call-stac <<
928 KBUILD_CFLAGS += $(CC_FLAGS_SCS) <<
929 KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-st <<
930 endif <<
931 export CC_FLAGS_SCS <<
932 endif <<
933 <<
934 ifdef CONFIG_LTO_CLANG <<
935 ifdef CONFIG_LTO_CLANG_THIN <<
936 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit <<
937 else <<
938 CC_FLAGS_LTO := -flto <<
939 endif <<
940 CC_FLAGS_LTO += -fvisibility=hidden <<
941 <<
942 # Limit inlining across translation units to r <<
943 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 <<
944 endif <<
945 <<
946 ifdef CONFIG_LTO <<
947 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) <<
948 KBUILD_AFLAGS += -fno-lto <<
949 export CC_FLAGS_LTO <<
950 endif <<
951 <<
952 ifdef CONFIG_CFI_CLANG <<
953 CC_FLAGS_CFI := -fsanitize=kcfi <<
954 ifdef CONFIG_CFI_ICALL_NORMALIZE_INTEGERS <<
955 CC_FLAGS_CFI += -fsanitize-cfi-ical <<
956 endif <<
957 ifdef CONFIG_RUST <<
958 # Always pass -Zsanitizer-cfi-normaliz <<
959 # CONFIG_CFI_ICALL_NORMALIZE_INTEGERS. <<
960 RUSTC_FLAGS_CFI := -Zsanitizer=kcfi <<
961 KBUILD_RUSTFLAGS += $(RUSTC_FLAGS_CFI) <<
962 export RUSTC_FLAGS_CFI <<
963 endif <<
964 KBUILD_CFLAGS += $(CC_FLAGS_CFI) <<
965 export CC_FLAGS_CFI <<
966 endif <<
967 <<
968 # Architectures can define flags to add/remove <<
969 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN <<
970 export CC_FLAGS_FPU <<
971 export CC_FLAGS_NO_FPU <<
972 <<
973 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) <<
974 # Set the minimal function alignment. Use the <<
975 # -fmin-function-alignment if it is available, <<
976 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME <<
977 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT <<
978 KBUILD_CFLAGS += -fmin-function-alignment=$(CO <<
979 else <<
980 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU <<
981 endif <<
982 endif 561 endif
983 562
984 # arch Makefile may override CC so keep this a 563 # arch Makefile may override CC so keep this after arch Makefile is included
985 NOSTDINC_FLAGS += -nostdinc !! 564 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
>> 565 CHECKFLAGS += $(NOSTDINC_FLAGS)
986 566
987 # To gain proper coverage for CONFIG_UBSAN_BOU !! 567 # warn about C99 declaration after statement
988 # the kernel uses only C99 flexible arrays for !! 568 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
989 # arrays. Enforce this for everything that may !! 569
990 # perform bounds checking. !! 570 # disable pointer signed / unsigned warnings in gcc 4.0
991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl !! 571 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
992 <<
993 #Currently, disable -Wstringop-overflow for GC <<
994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW <<
995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + <<
996 572
997 # disable invalid "can't wrap" optimizations f 573 # disable invalid "can't wrap" optimizations for signed / pointers
998 KBUILD_CFLAGS += -fno-strict-overflow !! 574 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
999 575
1000 # Make sure -fstack-check isn't enabled (like !! 576 # revert to pre-gcc-4.4 behaviour of .eh_frame
1001 KBUILD_CFLAGS += -fno-stack-check !! 577 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
1002 578
1003 # conserve stack if available 579 # conserve stack if available
1004 ifdef CONFIG_CC_IS_GCC !! 580 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
1005 KBUILD_CFLAGS += -fconserve-stack <<
1006 endif <<
1007 581
1008 # change __FILE__ to the relative path from t !! 582 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p !! 583 # But warn user when we do so
1010 !! 584 warn-assign = \
1011 # include additional Makefiles when needed !! 585 $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
1012 include-y := scripts/Ma !! 586
1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma !! 587 ifneq ($(KCPPFLAGS),)
1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma !! 588 $(call warn-assign,CPPFLAGS)
1015 include-$(CONFIG_KASAN) += scripts/Ma !! 589 KBUILD_CPPFLAGS += $(KCPPFLAGS)
1016 include-$(CONFIG_KCSAN) += scripts/Ma !! 590 endif
1017 include-$(CONFIG_KMSAN) += scripts/Ma !! 591 ifneq ($(KAFLAGS),)
1018 include-$(CONFIG_UBSAN) += scripts/Ma !! 592 $(call warn-assign,AFLAGS)
1019 include-$(CONFIG_KCOV) += scripts/Ma !! 593 KBUILD_AFLAGS += $(KAFLAGS)
1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma !! 594 endif
1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma !! 595 ifneq ($(KCFLAGS),)
1022 !! 596 $(call warn-assign,CFLAGS)
1023 include $(addprefix $(srctree)/, $(include-y) !! 597 KBUILD_CFLAGS += $(KCFLAGS)
1024 !! 598 endif
1025 # scripts/Makefile.gcc-plugins is intentional !! 599
1026 # Do not add $(call cc-option,...) below this !! 600 # Use --build-id when available.
1027 # from the clean source tree, the GCC plugins !! 601 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
1028 !! 602 $(call cc-ldoption, -Wl$(comma)--build-id,))
1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS !! 603 LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
1030 KBUILD_CPPFLAGS += $(KCPPFLAGS) !! 604 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
1031 KBUILD_AFLAGS += $(KAFLAGS) <<
1032 KBUILD_CFLAGS += $(KCFLAGS) <<
1033 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) <<
1034 <<
1035 KBUILD_LDFLAGS_MODULE += --build-id=sha1 <<
1036 LDFLAGS_vmlinux += --build-id=sha1 <<
1037 <<
1038 KBUILD_LDFLAGS += -z noexecstack <<
1039 ifeq ($(CONFIG_LD_IS_BFD),y) <<
1040 KBUILD_LDFLAGS += $(call ld-option,--no-warn <<
1041 endif <<
1042 605
1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 606 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
1044 LDFLAGS_vmlinux += -X !! 607 LDFLAGS_vmlinux += $(call ld-option, -X,)
1045 endif 608 endif
1046 609
1047 ifeq ($(CONFIG_RELR),y) <<
1048 # ld.lld before 15 did not support -z pack-re <<
1049 LDFLAGS_vmlinux += $(call ld-option,--pack-dy <<
1050 endif <<
1051 <<
1052 # We never want expected sections to be place <<
1053 # linker. All sections should be explicitly n <<
1054 ifdef CONFIG_LD_ORPHAN_WARN <<
1055 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG <<
1056 endif <<
1057 <<
1058 # Align the bit size of userspace programs wi <<
1059 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta <<
1060 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta <<
1061 <<
1062 # make the checker run with the right archite <<
1063 CHECKFLAGS += --arch=$(ARCH) <<
1064 <<
1065 # insure the checker run with the right endia <<
1066 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- <<
1067 <<
1068 # the checker needs the correct machine size <<
1069 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) <<
1070 <<
1071 # Default kernel image to build when no speci 610 # Default kernel image to build when no specific target is given.
1072 # KBUILD_IMAGE may be overruled on the comman 611 # KBUILD_IMAGE may be overruled on the command line or
1073 # set in the environment 612 # set in the environment
1074 # Also any assignments in arch/$(ARCH)/Makefi 613 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
1075 # this default value 614 # this default value
1076 export KBUILD_IMAGE ?= vmlinux 615 export KBUILD_IMAGE ?= vmlinux
1077 616
1078 # 617 #
1079 # INSTALL_PATH specifies where to place the u 618 # INSTALL_PATH specifies where to place the updated kernel and system map
1080 # images. Default is /boot, but you can set i 619 # images. Default is /boot, but you can set it to other values
1081 export INSTALL_PATH ?= /boot 620 export INSTALL_PATH ?= /boot
1082 621
1083 # 622 #
1084 # INSTALL_DTBS_PATH specifies a prefix for re <<
1085 # Like INSTALL_MOD_PATH, it isn't defined in <<
1086 # an argument if needed. Otherwise it default <<
1087 # <<
1088 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d <<
1089 <<
1090 # <<
1091 # INSTALL_MOD_PATH specifies a prefix to MODL 623 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
1092 # relocations required by build roots. This 624 # relocations required by build roots. This is not defined in the
1093 # makefile but the argument can be passed to 625 # makefile but the argument can be passed to make if needed.
1094 # 626 #
1095 627
1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 628 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
1097 export MODLIB 629 export MODLIB
1098 630
1099 PHONY += prepare0 !! 631 #
>> 632 # INSTALL_MOD_STRIP, if defined, will cause modules to be
>> 633 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
>> 634 # the default option --strip-debug will be used. Otherwise,
>> 635 # INSTALL_MOD_STRIP will used as the options to the strip command.
>> 636
>> 637 ifdef INSTALL_MOD_STRIP
>> 638 ifeq ($(INSTALL_MOD_STRIP),1)
>> 639 mod_strip_cmd = $(STRIP) --strip-debug
>> 640 else
>> 641 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
>> 642 endif # INSTALL_MOD_STRIP=1
>> 643 else
>> 644 mod_strip_cmd = true
>> 645 endif # INSTALL_MOD_STRIP
>> 646 export mod_strip_cmd
1100 647
1101 export extmod_prefix = $(if $(KBUILD_EXTMOD), <<
1102 export MODORDER := $(extmod_prefix)modules.or <<
1103 export MODULES_NSDEPS := $(extmod_prefix)modu <<
1104 648
1105 ifeq ($(KBUILD_EXTMOD),) 649 ifeq ($(KBUILD_EXTMOD),)
>> 650 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
1106 651
1107 build-dir := . !! 652 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
1108 clean-dirs := $(sort . Documentation \ !! 653 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
1109 $(patsubst %/,%,$(filter !! 654 $(net-y) $(net-m) $(libs-y) $(libs-m)))
1110 $(drivers-) $(libs-)) !! 655
1111 !! 656 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
1112 export ARCH_CORE := $(core-y) !! 657 $(init-n) $(init-) \
1113 export ARCH_LIB := $(filter %/, $(lib !! 658 $(core-n) $(core-) $(drivers-n) $(drivers-) \
1114 export ARCH_DRIVERS := $(drivers-y) $(dri !! 659 $(net-n) $(net-) $(libs-n) $(libs-))))
1115 # Externally visible symbols (used by link-vm !! 660
>> 661 init-y := $(patsubst %/, %/built-in.o, $(init-y))
>> 662 core-y := $(patsubst %/, %/built-in.o, $(core-y))
>> 663 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
>> 664 net-y := $(patsubst %/, %/built-in.o, $(net-y))
>> 665 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
>> 666 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
>> 667 libs-y := $(libs-y1) $(libs-y2)
>> 668
>> 669 # Build vmlinux
>> 670 # ---------------------------------------------------------------------------
>> 671 # vmlinux is built from the objects selected by $(vmlinux-init) and
>> 672 # $(vmlinux-main). Most are built-in.o files from top-level directories
>> 673 # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
>> 674 # Ordering when linking is important, and $(vmlinux-init) must be first.
>> 675 #
>> 676 # vmlinux
>> 677 # ^
>> 678 # |
>> 679 # +-< $(vmlinux-init)
>> 680 # | +--< init/version.o + more
>> 681 # |
>> 682 # +--< $(vmlinux-main)
>> 683 # | +--< driver/built-in.o mm/built-in.o + more
>> 684 # |
>> 685 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
>> 686 #
>> 687 # vmlinux version (uname -v) cannot be updated during normal
>> 688 # descending-into-subdirs phase since we do not yet know if we need to
>> 689 # update vmlinux.
>> 690 # Therefore this step is delayed until just before final link of vmlinux -
>> 691 # except in the kallsyms case where it is done just before adding the
>> 692 # symbols to the kernel.
>> 693 #
>> 694 # System.map is generated to document addresses of all kernel symbols
>> 695
>> 696 vmlinux-init := $(head-y) $(init-y)
>> 697 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
>> 698 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
>> 699 vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds
>> 700 export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
>> 701
>> 702 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
>> 703 # May be overridden by arch/$(ARCH)/Makefile
>> 704 quiet_cmd_vmlinux__ ?= LD $@
>> 705 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
>> 706 -T $(vmlinux-lds) $(vmlinux-init) \
>> 707 --start-group $(vmlinux-main) --end-group \
>> 708 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
>> 709
>> 710 # Generate new vmlinux version
>> 711 quiet_cmd_vmlinux_version = GEN .version
>> 712 cmd_vmlinux_version = set -e; \
>> 713 if [ ! -r .version ]; then \
>> 714 rm -f .version; \
>> 715 echo 1 >.version; \
>> 716 else \
>> 717 mv .version .old_version; \
>> 718 expr 0$$(cat .old_version) + 1 >.version; \
>> 719 fi; \
>> 720 $(MAKE) $(build)=init
>> 721
>> 722 # Generate System.map
>> 723 quiet_cmd_sysmap = SYSMAP
>> 724 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
>> 725
>> 726 # Link of vmlinux
>> 727 # If CONFIG_KALLSYMS is set .version is already updated
>> 728 # Generate System.map and verify that the content is consistent
>> 729 # Use + in front of the vmlinux_version rule to silent warning with make -j2
>> 730 # First command is ':' to allow us to use + in front of the rule
>> 731 define rule_vmlinux__
>> 732 :
>> 733 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
>> 734
>> 735 $(call cmd,vmlinux__)
>> 736 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
>> 737
>> 738 $(Q)$(if $($(quiet)cmd_sysmap), \
>> 739 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
>> 740 $(cmd_sysmap) $@ System.map; \
>> 741 if [ $$? -ne 0 ]; then \
>> 742 rm -f $@; \
>> 743 /bin/false; \
>> 744 fi;
>> 745 $(verify_kallsyms)
>> 746 endef
1116 747
1117 KBUILD_VMLINUX_OBJS := ./built-in.a !! 748
1118 ifdef CONFIG_MODULES !! 749 ifdef CONFIG_KALLSYMS
1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a !! 750 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib !! 751 # It's a three stage process:
>> 752 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
>> 753 # empty
>> 754 # Running kallsyms on that gives us .tmp_kallsyms1.o with
>> 755 # the right size - vmlinux version (uname -v) is updated during this step
>> 756 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
>> 757 # but due to the added section, some addresses have shifted.
>> 758 # From here, we generate a correct .tmp_kallsyms2.o
>> 759 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
>> 760 # o Verify that the System.map from vmlinux matches the map from
>> 761 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
>> 762 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
>> 763 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
>> 764 # temporary bypass to allow the kernel to be built while the
>> 765 # maintainers work out what went wrong with kallsyms.
>> 766
>> 767 ifdef CONFIG_KALLSYMS_EXTRA_PASS
>> 768 last_kallsyms := 3
1121 else 769 else
1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 770 last_kallsyms := 2
1123 endif 771 endif
1124 772
1125 export KBUILD_VMLINUX_LIBS !! 773 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
1126 export KBUILD_LDS := arch/$(SRCARCH) <<
1127 774
1128 ifdef CONFIG_TRIM_UNUSED_KSYMS !! 775 define verify_kallsyms
1129 # For the kernel to actually contain only the !! 776 $(Q)$(if $($(quiet)cmd_sysmap), \
1130 # we have to build modules as well to determi !! 777 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
1131 KBUILD_MODULES := 1 !! 778 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
>> 779 $(Q)cmp -s System.map .tmp_System.map || \
>> 780 (echo Inconsistent kallsyms data; \
>> 781 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
>> 782 rm .tmp_kallsyms* ; /bin/false )
>> 783 endef
>> 784
>> 785 # Update vmlinux version before link
>> 786 # Use + in front of this rule to silent warning about make -j1
>> 787 # First command is ':' to allow us to use + in front of this rule
>> 788 cmd_ksym_ld = $(cmd_vmlinux__)
>> 789 define rule_ksym_ld
>> 790 :
>> 791 +$(call cmd,vmlinux_version)
>> 792 $(call cmd,vmlinux__)
>> 793 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
>> 794 endef
>> 795
>> 796 # Generate .S file with all kernel symbols
>> 797 quiet_cmd_kallsyms = KSYM $@
>> 798 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
>> 799 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
>> 800
>> 801 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
>> 802 $(call if_changed_dep,as_o_S)
>> 803
>> 804 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
>> 805 $(call cmd,kallsyms)
>> 806
>> 807 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
>> 808 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
>> 809 $(call if_changed_rule,ksym_ld)
>> 810
>> 811 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
>> 812 $(call if_changed,vmlinux__)
>> 813
>> 814 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
>> 815 $(call if_changed,vmlinux__)
>> 816
>> 817 # Needs to visit scripts/ before $(KALLSYMS) can be used.
>> 818 $(KALLSYMS): scripts ;
>> 819
>> 820 # Generate some data for debugging strange kallsyms problems
>> 821 debug_kallsyms: .tmp_map$(last_kallsyms)
>> 822
>> 823 .tmp_map%: .tmp_vmlinux% FORCE
>> 824 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
>> 825
>> 826 .tmp_map3: .tmp_map2
>> 827
>> 828 .tmp_map2: .tmp_map1
>> 829
>> 830 endif # ifdef CONFIG_KALLSYMS
>> 831
>> 832 # Do modpost on a prelinked vmlinux. The finally linked vmlinux has
>> 833 # relevant sections renamed as per the linker script.
>> 834 quiet_cmd_vmlinux-modpost = LD $@
>> 835 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
>> 836 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \
>> 837 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
>> 838 define rule_vmlinux-modpost
>> 839 :
>> 840 +$(call cmd,vmlinux-modpost)
>> 841 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
>> 842 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
>> 843 endef
>> 844
>> 845 # vmlinux image - including updated kernel symbols
>> 846 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE
>> 847 ifdef CONFIG_HEADERS_CHECK
>> 848 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
>> 849 endif
>> 850 ifdef CONFIG_SAMPLES
>> 851 $(Q)$(MAKE) $(build)=samples
1132 endif 852 endif
>> 853 ifdef CONFIG_BUILD_DOCSRC
>> 854 $(Q)$(MAKE) $(build)=Documentation
>> 855 endif
>> 856 $(call vmlinux-modpost)
>> 857 $(call if_changed_rule,vmlinux__)
>> 858 $(Q)rm -f .old_version
1133 859
1134 # '$(AR) mPi' needs 'T' to workaround the bug !! 860 # build vmlinux.o first to catch section mismatch errors early
1135 quiet_cmd_ar_vmlinux.a = AR $@ !! 861 ifdef CONFIG_KALLSYMS
1136 cmd_ar_vmlinux.a = \ !! 862 .tmp_vmlinux1: vmlinux.o
1137 rm -f $@; \ !! 863 endif
1138 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS <<
1139 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) <<
1140 <<
1141 targets += vmlinux.a <<
1142 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea <<
1143 $(call if_changed,ar_vmlinux.a) <<
1144 <<
1145 PHONY += vmlinux_o <<
1146 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) <<
1147 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1148 <<
1149 vmlinux.o modules.builtin.modinfo modules.bui <<
1150 @: <<
1151 <<
1152 PHONY += vmlinux <<
1153 # LDFLAGS_vmlinux in the top Makefile defines <<
1154 # not for decompressors. LDFLAGS_vmlinux in a <<
1155 # unrelated; the decompressors just happen to <<
1156 # arch/*/boot/compressed/vmlinux. <<
1157 # Export LDFLAGS_vmlinux only to scripts/Make <<
1158 # <<
1159 # _LDFLAGS_vmlinux is a workaround for the 'p <<
1160 # https://savannah.gnu.org/bugs/?61463 <<
1161 # For Make > 4.4, the following simple code w <<
1162 # vmlinux: private export LDFLAGS_vmlinux := <<
1163 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG <<
1164 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ <<
1165 vmlinux: vmlinux.o $(KBUILD_LDS) modpost <<
1166 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1167 864
1168 # The actual objects are generated when desce !! 865 modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))
>> 866 vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE
>> 867 $(call if_changed_rule,vmlinux-modpost)
>> 868
>> 869 # The actual objects are generated when descending,
1169 # make sure no implicit rule kicks in 870 # make sure no implicit rule kicks in
1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 871 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
1171 872
1172 ifeq ($(origin KERNELRELEASE),file) !! 873 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1173 filechk_kernel.release = $(srctree)/scripts/s !! 874 # Preset locale variables to speed up the build process. Limit locale
>> 875 # tweaks to this spot to avoid wrong language settings when running
>> 876 # make menuconfig etc.
>> 877 # Error messages still appears in the original language
>> 878
>> 879 PHONY += $(vmlinux-dirs)
>> 880 $(vmlinux-dirs): prepare scripts
>> 881 $(Q)$(MAKE) $(build)=$@
>> 882
>> 883 # Build the kernel release string
>> 884 #
>> 885 # The KERNELRELEASE value built here is stored in the file
>> 886 # include/config/kernel.release, and is used when executing several
>> 887 # make targets, such as "make install" or "make modules_install."
>> 888 #
>> 889 # The eventual kernel release string consists of the following fields,
>> 890 # shown in a hierarchical format to show how smaller parts are concatenated
>> 891 # to form the larger and final value, with values coming from places like
>> 892 # the Makefile, kernel config options, make command line options and/or
>> 893 # SCM tag information.
>> 894 #
>> 895 # $(KERNELVERSION)
>> 896 # $(VERSION) eg, 2
>> 897 # $(PATCHLEVEL) eg, 6
>> 898 # $(SUBLEVEL) eg, 18
>> 899 # $(EXTRAVERSION) eg, -rc6
>> 900 # $(localver-full)
>> 901 # $(localver)
>> 902 # localversion* (files without backups, containing '~')
>> 903 # $(CONFIG_LOCALVERSION) (from kernel config setting)
>> 904 # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
>> 905 # ./scripts/setlocalversion (SCM tag, if one exists)
>> 906 # $(LOCALVERSION) (from make command line if provided)
>> 907 #
>> 908 # Note how the final $(localver-auto) string is included *only* if the
>> 909 # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
>> 910 # moment, only git is supported but other SCMs can edit the script
>> 911 # scripts/setlocalversion and add the appropriate checks as needed.
>> 912
>> 913 pattern = ".*/localversion[^~]*"
>> 914 string = $(shell cat /dev/null \
>> 915 `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`)
>> 916
>> 917 localver = $(subst $(space),, $(string) \
>> 918 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
>> 919
>> 920 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
>> 921 # and if the SCM is know a tag from the SCM is appended.
>> 922 # The appended tag is determined by the SCM used.
>> 923 #
>> 924 # .scmversion is used when generating rpm packages so we do not loose
>> 925 # the version information from the SCM when we do the build of the kernel
>> 926 # from the copied source
>> 927 ifdef CONFIG_LOCALVERSION_AUTO
>> 928
>> 929 ifeq ($(wildcard .scmversion),)
>> 930 _localver-auto = $(shell $(CONFIG_SHELL) \
>> 931 $(srctree)/scripts/setlocalversion $(srctree))
1174 else 932 else
1175 filechk_kernel.release = echo $(KERNELRELEASE !! 933 _localver-auto = $(shell cat .scmversion 2> /dev/null)
1176 endif 934 endif
1177 935
1178 # Store (new) KERNELRELEASE string in include !! 936 localver-auto = $(LOCALVERSION)$(_localver-auto)
1179 include/config/kernel.release: FORCE !! 937 endif
1180 $(call filechk,kernel.release) !! 938
>> 939 localver-full = $(localver)$(localver-auto)
>> 940
>> 941 # Store (new) KERNELRELASE string in include/config/kernel.release
>> 942 kernelrelease = $(KERNELVERSION)$(localver-full)
>> 943 include/config/kernel.release: include/config/auto.conf FORCE
>> 944 $(Q)rm -f $@
>> 945 $(Q)echo $(kernelrelease) > $@
1181 946
1182 # Additional helpers built in scripts/ <<
1183 # Carefully list dependencies so we do not tr <<
1184 # in parallel <<
1185 PHONY += scripts <<
1186 scripts: scripts_basic scripts_dtc <<
1187 $(Q)$(MAKE) $(build)=$(@) <<
1188 947
1189 # Things we need to do before we recursively 948 # Things we need to do before we recursively start building the kernel
1190 # or the modules are listed in "prepare". 949 # or the modules are listed in "prepare".
1191 # A multi level approach is used. prepareN is 950 # A multi level approach is used. prepareN is processed before prepareN-1.
1192 # archprepare is used in arch Makefiles and w 951 # archprepare is used in arch Makefiles and when processed asm symlink,
1193 # version.h and scripts_basic is processed / 952 # version.h and scripts_basic is processed / created.
1194 953
1195 PHONY += prepare archprepare !! 954 # Listed in dependency order
>> 955 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
>> 956
>> 957 # prepare3 is used to check if we are building in a separate output directory,
>> 958 # and if so do:
>> 959 # 1) Check that make has not been executed in the kernel src $(srctree)
>> 960 # 2) Create the include2 directory, used for the second asm symlink
>> 961 prepare3: include/config/kernel.release
>> 962 ifneq ($(KBUILD_SRC),)
>> 963 @$(kecho) ' Using $(srctree) as source for kernel'
>> 964 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
>> 965 echo " $(srctree) is not clean, please run 'make mrproper'";\
>> 966 echo " in the '$(srctree)' directory.";\
>> 967 /bin/false; \
>> 968 fi;
>> 969 $(Q)if [ ! -d include2 ]; then \
>> 970 mkdir -p include2; \
>> 971 ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \
>> 972 fi
>> 973 endif
1196 974
1197 archprepare: outputmakefile archheaders archs !! 975 # prepare2 creates a makefile if using a separate output directory
1198 asm-generic $(version_h) include/gene !! 976 prepare2: prepare3 outputmakefile
1199 include/generated/compile.h include/g !! 977
1200 !! 978 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
1201 prepare0: archprepare !! 979 include/asm include/config/auto.conf
1202 $(Q)$(MAKE) $(build)=scripts/mod !! 980 $(cmd_crmodverdir)
1203 $(Q)$(MAKE) $(build)=. prepare !! 981
>> 982 archprepare: prepare1 scripts_basic
>> 983
>> 984 prepare0: archprepare FORCE
>> 985 $(Q)$(MAKE) $(build)=.
>> 986 $(Q)$(MAKE) $(build)=. missing-syscalls
1204 987
1205 # All the preparing.. 988 # All the preparing..
1206 prepare: prepare0 989 prepare: prepare0
1207 ifdef CONFIG_RUST !! 990
1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip !! 991 # The asm symlink changes when $(ARCH) changes.
1209 $(Q)$(MAKE) $(build)=rust !! 992 # Detect this and ask user to run make mrproper
1210 endif !! 993 # If asm is a stale symlink (point to dir that does not exist) remove it
1211 !! 994 define check-symlink
1212 PHONY += remove-stale-files !! 995 set -e; \
1213 remove-stale-files: !! 996 if [ -L include/asm ]; then \
1214 $(Q)$(srctree)/scripts/remove-stale-f !! 997 asmlink=`readlink include/asm | cut -d '-' -f 2`; \
1215 !! 998 if [ "$$asmlink" != "$(SRCARCH)" ]; then \
1216 # Support for using generic headers in asm-ge !! 999 echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \
1217 asm-generic := -f $(srctree)/scripts/Makefile !! 1000 echo " set ARCH or save .config and run 'make mrproper' to fix it"; \
1218 !! 1001 exit 1; \
1219 PHONY += asm-generic uapi-asm-generic !! 1002 fi; \
1220 asm-generic: uapi-asm-generic !! 1003 test -e $$asmlink || rm include/asm; \
1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1004 elif [ -d include/asm ]; then \
1222 generic=include/asm-generic !! 1005 echo "ERROR: $@ is a directory but a symlink was expected";\
1223 uapi-asm-generic: !! 1006 exit 1; \
1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1007 fi
1225 generic=include/uapi/asm-generic !! 1008 endef
>> 1009
>> 1010 # We create the target directory of the symlink if it does
>> 1011 # not exist so the test in check-symlink works and we have a
>> 1012 # directory for generated filesas used by some architectures.
>> 1013 define create-symlink
>> 1014 if [ ! -L include/asm ]; then \
>> 1015 $(kecho) ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \
>> 1016 if [ ! -d include/asm-$(SRCARCH) ]; then \
>> 1017 mkdir -p include/asm-$(SRCARCH); \
>> 1018 fi; \
>> 1019 ln -fsn asm-$(SRCARCH) $@; \
>> 1020 fi
>> 1021 endef
>> 1022
>> 1023 include/asm: FORCE
>> 1024 $(Q)$(check-symlink)
>> 1025 $(Q)$(create-symlink)
1226 1026
1227 # Generate some files 1027 # Generate some files
1228 # ------------------------------------------- 1028 # ---------------------------------------------------------------------------
1229 1029
1230 # KERNELRELEASE can change from a few differe 1030 # KERNELRELEASE can change from a few different places, meaning version.h
1231 # needs to be updated, so this check is force 1031 # needs to be updated, so this check is forced on all builds
1232 1032
1233 uts_len := 64 1033 uts_len := 64
1234 define filechk_utsrelease.h 1034 define filechk_utsrelease.h
1235 if [ `echo -n "$(KERNELRELEASE)" | wc 1035 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
1236 echo '"$(KERNELRELEASE)" exceeds $( 1036 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
1237 exit 1; 1037 exit 1; \
1238 fi; 1038 fi; \
1239 echo \#define UTS_RELEASE \"$(KERNELR !! 1039 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1240 endef 1040 endef
1241 1041
1242 define filechk_version.h 1042 define filechk_version.h
1243 if [ $(SUBLEVEL) -gt 255 ]; then !! 1043 (echo \#define LINUX_VERSION_CODE $(shell \
1244 echo \#define LINUX_VERSION_C !! 1044 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
1245 expr $(VERSION) \* 65536 + $( !! 1045 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1246 else <<
1247 echo \#define LINUX_VERSION_C <<
1248 expr $(VERSION) \* 65536 + $( <<
1249 fi; <<
1250 echo '#define KERNEL_VERSION(a,b,c) ( <<
1251 ((c) > 255 ? 255 : (c)))'; <<
1252 echo \#define LINUX_VERSION_MAJOR $(V <<
1253 echo \#define LINUX_VERSION_PATCHLEVE <<
1254 echo \#define LINUX_VERSION_SUBLEVEL <<
1255 endef 1046 endef
1256 1047
1257 $(version_h): private PATCHLEVEL := $(or $(PA !! 1048 include/linux/version.h: $(srctree)/Makefile FORCE
1258 $(version_h): private SUBLEVEL := $(or $(SUBL <<
1259 $(version_h): FORCE <<
1260 $(call filechk,version.h) 1049 $(call filechk,version.h)
1261 1050
1262 include/generated/utsrelease.h: include/confi !! 1051 include/linux/utsrelease.h: include/config/kernel.release FORCE
1263 $(call filechk,utsrelease.h) 1052 $(call filechk,utsrelease.h)
1264 1053
1265 filechk_compile.h = $(srctree)/scripts/mkcomp <<
1266 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION <<
1267 <<
1268 include/generated/compile.h: FORCE <<
1269 $(call filechk,compile.h) <<
1270 <<
1271 PHONY += headerdep 1054 PHONY += headerdep
1272 headerdep: 1055 headerdep:
1273 $(Q)find $(srctree)/include/ -name '* !! 1056 $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl
1274 $(srctree)/scripts/headerdep.pl -I$(s <<
1275 1057
1276 # ------------------------------------------- 1058 # ---------------------------------------------------------------------------
1277 # Kernel headers <<
1278 1059
1279 #Default location for installed headers !! 1060 PHONY += depend dep
1280 export INSTALL_HDR_PATH = $(objtree)/usr !! 1061 depend dep:
1281 !! 1062 @echo '*** Warning: make $@ is unnecessary now.'
1282 quiet_cmd_headers_install = INSTALL $(INSTALL <<
1283 cmd_headers_install = \ <<
1284 mkdir -p $(INSTALL_HDR_PATH); \ <<
1285 rsync -mrl --include='*/' --include=' <<
1286 usr/include $(INSTALL_HDR_PATH) <<
1287 <<
1288 PHONY += headers_install <<
1289 headers_install: headers <<
1290 $(call cmd,headers_install) <<
1291 <<
1292 PHONY += archheaders archscripts <<
1293 <<
1294 hdr-inst := -f $(srctree)/scripts/Makefile.he <<
1295 <<
1296 PHONY += headers <<
1297 headers: $(version_h) scripts_unifdef uapi-as <<
1298 $(if $(filter um, $(SRCARCH)), $(erro <<
1299 $(Q)$(MAKE) $(hdr-inst)=include/uapi <<
1300 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC <<
1301 <<
1302 ifdef CONFIG_HEADERS_INSTALL <<
1303 prepare: headers <<
1304 endif <<
1305 <<
1306 PHONY += scripts_unifdef <<
1307 scripts_unifdef: scripts_basic <<
1308 $(Q)$(MAKE) $(build)=scripts scripts/ <<
1309 <<
1310 # ------------------------------------------- <<
1311 # Install <<
1312 <<
1313 # Many distributions have the custom install <<
1314 # If DKMS is installed, 'make install' will e <<
1315 # to this Makefile to build and install exter <<
1316 # Cancel sub_make_done so that options such a <<
1317 <<
1318 quiet_cmd_install = INSTALL $(INSTALL_PATH) <<
1319 cmd_install = unset sub_make_done; $(sr <<
1320 <<
1321 # ------------------------------------------- <<
1322 # vDSO install <<
1323 <<
1324 PHONY += vdso_install <<
1325 vdso_install: export INSTALL_FILES = $(vdso-i <<
1326 vdso_install: <<
1327 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1328 <<
1329 # ------------------------------------------- <<
1330 # Tools <<
1331 <<
1332 ifdef CONFIG_OBJTOOL <<
1333 prepare: tools/objtool <<
1334 endif <<
1335 <<
1336 ifdef CONFIG_BPF <<
1337 ifdef CONFIG_DEBUG_INFO_BTF <<
1338 prepare: tools/bpf/resolve_btfids <<
1339 endif <<
1340 endif <<
1341 <<
1342 # The tools build system is not a part of Kbu <<
1343 # its own unique issues. If you need to integ <<
1344 # please consider locating that tool outside <<
1345 # standard Kbuild "hostprogs" syntax instead <<
1346 # here. See Documentation/kbuild/makefiles.rs <<
1347 <<
1348 PHONY += resolve_btfids_clean <<
1349 <<
1350 resolve_btfids_O = $(abspath $(objtree))/tool <<
1351 <<
1352 # tools/bpf/resolve_btfids directory might no <<
1353 # in output directory, skip its clean in that <<
1354 resolve_btfids_clean: <<
1355 ifneq ($(wildcard $(resolve_btfids_O)),) <<
1356 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ <<
1357 endif <<
1358 <<
1359 # Clear a bunch of variables before executing <<
1360 ifeq ($(quiet),silent_) <<
1361 tools_silent=s <<
1362 endif <<
1363 <<
1364 tools/: FORCE <<
1365 $(Q)mkdir -p $(objtree)/tools <<
1366 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too <<
1367 <<
1368 tools/%: FORCE <<
1369 $(Q)mkdir -p $(objtree)/tools <<
1370 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too <<
1371 1063
1372 # ------------------------------------------- 1064 # ---------------------------------------------------------------------------
1373 # Kernel selftest !! 1065 # Firmware install
>> 1066 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
>> 1067 export INSTALL_FW_PATH
1374 1068
1375 PHONY += kselftest !! 1069 PHONY += firmware_install
1376 kselftest: headers !! 1070 firmware_install: FORCE
1377 $(Q)$(MAKE) -C $(srctree)/tools/testi !! 1071 @mkdir -p $(objtree)/firmware
1378 !! 1072 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1379 kselftest-%: headers FORCE <<
1380 $(Q)$(MAKE) -C $(srctree)/tools/testi <<
1381 <<
1382 PHONY += kselftest-merge <<
1383 kselftest-merge: <<
1384 $(if $(wildcard $(objtree)/.config),, <<
1385 $(Q)find $(srctree)/tools/testing/sel <<
1386 xargs $(srctree)/scripts/kcon <<
1387 $(Q)$(MAKE) -f $(srctree)/Makefile ol <<
1388 1073
1389 # ------------------------------------------- 1074 # ---------------------------------------------------------------------------
1390 # Devicetree files !! 1075 # Kernel headers
1391 <<
1392 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ <<
1393 dtstree := arch/$(SRCARCH)/boot/dts <<
1394 endif <<
1395 <<
1396 ifneq ($(dtstree),) <<
1397 <<
1398 %.dtb: dtbs_prepare <<
1399 $(Q)$(MAKE) $(build)=$(dtstree) $(dts <<
1400 <<
1401 %.dtbo: dtbs_prepare <<
1402 $(Q)$(MAKE) $(build)=$(dtstree) $(dts <<
1403 <<
1404 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ <<
1405 dtbs: dtbs_prepare <<
1406 $(Q)$(MAKE) $(build)=$(dtstree) need- <<
1407 <<
1408 # include/config/kernel.release is actually n <<
1409 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) <<
1410 # dtbs_install depend on it as dtbs_install m <<
1411 dtbs_prepare: include/config/kernel.release s <<
1412 <<
1413 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), <<
1414 export CHECK_DTBS=y <<
1415 endif <<
1416 <<
1417 ifneq ($(CHECK_DTBS),) <<
1418 dtbs_prepare: dt_binding_schemas <<
1419 endif <<
1420 <<
1421 dtbs_check: dtbs <<
1422 <<
1423 dtbs_install: <<
1424 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1425 <<
1426 ifdef CONFIG_OF_EARLY_FLATTREE <<
1427 all: dtbs <<
1428 endif <<
1429 1076
1430 endif !! 1077 #Default location for installed headers
>> 1078 export INSTALL_HDR_PATH = $(objtree)/usr
1431 1079
1432 PHONY += scripts_dtc !! 1080 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
1433 scripts_dtc: scripts_basic !! 1081 # Find out where the Kbuild file is located to support
1434 $(Q)$(MAKE) $(build)=scripts/dtc !! 1082 # arch/$(ARCH)/include/asm
>> 1083 hdr-dir = $(strip \
>> 1084 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild), \
>> 1085 arch/$(hdr-arch)/include/asm, include/asm-$(hdr-arch)))
1435 1086
1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO !! 1087 # If we do an all arch process set dst to asm-$(hdr-arch)
1437 export CHECK_DTBS=y !! 1088 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1438 endif <<
1439 1089
1440 PHONY += dt_binding_check dt_binding_schemas !! 1090 PHONY += __headers
1441 dt_binding_check: dt_binding_schemas scripts_ !! 1091 __headers: include/linux/version.h scripts_basic FORCE
1442 $(Q)$(MAKE) $(build)=Documentation/de !! 1092 $(Q)$(MAKE) $(build)=scripts scripts/unifdef
1443 1093
1444 dt_binding_schemas: !! 1094 PHONY += headers_install_all
1445 $(Q)$(MAKE) $(build)=Documentation/de !! 1095 headers_install_all:
>> 1096 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1446 1097
1447 PHONY += dt_compatible_check !! 1098 PHONY += headers_install
1448 dt_compatible_check: dt_binding_schemas !! 1099 headers_install: __headers
1449 $(Q)$(MAKE) $(build)=Documentation/de !! 1100 $(if $(wildcard $(srctree)/$(hdr-dir)/Kbuild),, \
>> 1101 $(error Headers not exportable for the $(SRCARCH) architecture))
>> 1102 $(Q)$(MAKE) $(hdr-inst)=include
>> 1103 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst)
>> 1104
>> 1105 PHONY += headers_check_all
>> 1106 headers_check_all: headers_install_all
>> 1107 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
>> 1108
>> 1109 PHONY += headers_check
>> 1110 headers_check: headers_install
>> 1111 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1
>> 1112 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) HDRCHECK=1
1450 1113
1451 # ------------------------------------------- 1114 # ---------------------------------------------------------------------------
1452 # Modules 1115 # Modules
1453 1116
1454 ifdef CONFIG_MODULES 1117 ifdef CONFIG_MODULES
1455 1118
1456 # By default, build modules as well 1119 # By default, build modules as well
1457 1120
1458 all: modules 1121 all: modules
1459 1122
1460 # When we're building modules with modversion !! 1123 # Build modules
1461 # the built-in objects during the descend as <<
1462 # make sure the checksums are up to date befo <<
1463 ifdef CONFIG_MODVERSIONS <<
1464 KBUILD_BUILTIN := 1 <<
1465 endif <<
1466 <<
1467 # Build modules <<
1468 # 1124 #
>> 1125 # A module can be listed more than once in obj-m resulting in
>> 1126 # duplicate lines in modules.order files. Those are removed
>> 1127 # using awk while concatenating to the final file.
>> 1128
>> 1129 PHONY += modules
>> 1130 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
>> 1131 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
>> 1132 @$(kecho) ' Building modules, stage 2.';
>> 1133 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
>> 1134 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1469 1135
1470 # *.ko are usually independent of vmlinux, bu <<
1471 # is an exception. <<
1472 ifdef CONFIG_DEBUG_INFO_BTF_MODULES <<
1473 KBUILD_BUILTIN := 1 <<
1474 modules: vmlinux <<
1475 endif <<
1476 <<
1477 modules: modules_prepare <<
1478 1136
1479 # Target to prepare building external modules 1137 # Target to prepare building external modules
1480 modules_prepare: prepare !! 1138 PHONY += modules_prepare
1481 $(Q)$(MAKE) $(build)=scripts scripts/ !! 1139 modules_prepare: prepare scripts
>> 1140
>> 1141 # Target to install modules
>> 1142 PHONY += modules_install
>> 1143 modules_install: _modinst_ _modinst_post
>> 1144
>> 1145 PHONY += _modinst_
>> 1146 _modinst_:
>> 1147 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
>> 1148 echo "Warning: you may need to install module-init-tools"; \
>> 1149 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
>> 1150 sleep 1; \
>> 1151 fi
>> 1152 @rm -rf $(MODLIB)/kernel
>> 1153 @rm -f $(MODLIB)/source
>> 1154 @mkdir -p $(MODLIB)/kernel
>> 1155 @ln -s $(srctree) $(MODLIB)/source
>> 1156 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
>> 1157 rm -f $(MODLIB)/build ; \
>> 1158 ln -s $(objtree) $(MODLIB)/build ; \
>> 1159 fi
>> 1160 @cp -f $(objtree)/modules.order $(MODLIB)/
>> 1161 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
>> 1162
>> 1163 # This depmod is only for convenience to give the initial
>> 1164 # boot a modules.dep even before / is mounted read-write. However the
>> 1165 # boot script depmod is the master version.
>> 1166 PHONY += _modinst_post
>> 1167 _modinst_post: _modinst_
>> 1168 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
>> 1169 $(call cmd,depmod)
>> 1170
>> 1171 else # CONFIG_MODULES
>> 1172
>> 1173 # Modules not configured
>> 1174 # ---------------------------------------------------------------------------
>> 1175
>> 1176 modules modules_install: FORCE
>> 1177 @echo
>> 1178 @echo "The present kernel configuration has modules disabled."
>> 1179 @echo "Type 'make config' and enable loadable module support."
>> 1180 @echo "Then build a kernel with module support enabled."
>> 1181 @echo
>> 1182 @exit 1
1482 1183
1483 endif # CONFIG_MODULES 1184 endif # CONFIG_MODULES
1484 1185
1485 ### 1186 ###
1486 # Cleaning is done on three levels. 1187 # Cleaning is done on three levels.
1487 # make clean Delete most generated files 1188 # make clean Delete most generated files
1488 # Leave enough to build extern 1189 # Leave enough to build external modules
1489 # make mrproper Delete the current configura 1190 # make mrproper Delete the current configuration, and all generated files
1490 # make distclean Remove editor backup files, 1191 # make distclean Remove editor backup files, patch leftover files and the like
1491 1192
1492 # Directories & files removed with 'make clea 1193 # Directories & files removed with 'make clean'
1493 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1194 CLEAN_DIRS += $(MODVERDIR)
1494 modules.builtin modules.builti !! 1195 CLEAN_FILES += vmlinux System.map \
1495 modules.builtin.ranges vmlinux !! 1196 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
1496 compile_commands.json rust/tes <<
1497 rust-project.json .vmlinux.obj <<
1498 1197
1499 # Directories & files removed with 'make mrpr 1198 # Directories & files removed with 'make mrproper'
1500 MRPROPER_FILES += include/config include/gene !! 1199 MRPROPER_DIRS += include/config include2 usr/include include/generated
1501 arch/$(SRCARCH)/include/gen !! 1200 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
1502 debian snap tar-install PKG !! 1201 include/linux/autoconf.h include/linux/version.h \
1503 .config .config.old .versio !! 1202 include/linux/utsrelease.h \
1504 Module.symvers \ !! 1203 include/linux/bounds.h include/asm*/asm-offsets.h \
1505 certs/signing_key.pem \ !! 1204 Module.symvers Module.markers tags TAGS cscope*
1506 certs/x509.genkey \ <<
1507 vmlinux-gdb.py \ <<
1508 rpmbuild \ <<
1509 rust/libmacros.so <<
1510 1205
1511 # clean - Delete most, but leave enough to bu 1206 # clean - Delete most, but leave enough to build external modules
1512 # 1207 #
1513 clean: private rm-files := $(CLEAN_FILES) !! 1208 clean: rm-dirs := $(CLEAN_DIRS)
>> 1209 clean: rm-files := $(CLEAN_FILES)
>> 1210 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation)
1514 1211
1515 PHONY += archclean vmlinuxclean !! 1212 PHONY += $(clean-dirs) clean archclean
1516 !! 1213 $(clean-dirs):
1517 vmlinuxclean: !! 1214 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1518 $(Q)$(CONFIG_SHELL) $(srctree)/script <<
1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f <<
1520 1215
1521 clean: archclean vmlinuxclean resolve_btfids_ !! 1216 clean: archclean $(clean-dirs)
>> 1217 $(call cmd,rmdirs)
>> 1218 $(call cmd,rmfiles)
>> 1219 @find . $(RCS_FIND_IGNORE) \
>> 1220 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
>> 1221 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
>> 1222 -o -name '*.symtypes' -o -name 'modules.order' \
>> 1223 -o -name 'Module.markers' -o -name '.tmp_*.o.*' \
>> 1224 -o -name '*.gcno' \) -type f -print | xargs rm -f
1522 1225
1523 # mrproper - Delete all generated files, incl 1226 # mrproper - Delete all generated files, including .config
1524 # 1227 #
1525 mrproper: private rm-files := $(MRPROPER_FILE !! 1228 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1526 mrproper-dirs := $(addprefix _mrproper_, !! 1229 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
>> 1230 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1527 1231
1528 PHONY += $(mrproper-dirs) mrproper !! 1232 PHONY += $(mrproper-dirs) mrproper archmrproper
1529 $(mrproper-dirs): 1233 $(mrproper-dirs):
1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1234 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1531 1235
1532 mrproper: clean $(mrproper-dirs) !! 1236 mrproper: clean archmrproper $(mrproper-dirs)
>> 1237 $(call cmd,rmdirs)
1533 $(call cmd,rmfiles) 1238 $(call cmd,rmfiles)
1534 @find . $(RCS_FIND_IGNORE) \ <<
1535 \( -name '*.rmeta' \) \ <<
1536 -type f -print | xargs rm -f <<
1537 1239
1538 # distclean 1240 # distclean
1539 # 1241 #
1540 PHONY += distclean 1242 PHONY += distclean
1541 1243
1542 distclean: mrproper 1244 distclean: mrproper
1543 @find . $(RCS_FIND_IGNORE) \ !! 1245 @find $(srctree) $(RCS_FIND_IGNORE) \
1544 \( -name '*.orig' -o -name '* 1246 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1545 -o -name '*.bak' -o -name '#* !! 1247 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1546 -o -name 'core' -o -name tags !! 1248 -o -name '.*.rej' -o -size 0 \
1547 -o -name GPATH -o -name GRTAG !! 1249 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1548 -type f -print | xargs rm -f 1250 -type f -print | xargs rm -f
1549 1251
1550 1252
1551 # Packaging of the kernel to various formats 1253 # Packaging of the kernel to various formats
1552 # ------------------------------------------- 1254 # ---------------------------------------------------------------------------
>> 1255 # rpm target kept for backward compatibility
>> 1256 package-dir := $(srctree)/scripts/package
1553 1257
1554 %src-pkg: FORCE <<
1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1556 %pkg: include/config/kernel.release FORCE 1258 %pkg: include/config/kernel.release FORCE
1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1259 $(Q)$(MAKE) $(build)=$(package-dir) $@
>> 1260 rpm: include/config/kernel.release FORCE
>> 1261 $(Q)$(MAKE) $(build)=$(package-dir) $@
>> 1262
1558 1263
1559 # Brief documentation of the typical targets 1264 # Brief documentation of the typical targets used
1560 # ------------------------------------------- 1265 # ---------------------------------------------------------------------------
1561 1266
1562 boards := $(wildcard $(srctree)/arch/$(SRCARC 1267 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1563 boards := $(sort $(notdir $(boards))) !! 1268 boards := $(notdir $(boards))
1564 board-dirs := $(dir $(wildcard $(srctree)/arc 1269 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1565 board-dirs := $(sort $(notdir $(board-dirs:/= 1270 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1566 1271
1567 PHONY += help <<
1568 help: 1272 help:
1569 @echo 'Cleaning targets:' 1273 @echo 'Cleaning targets:'
1570 @echo ' clean - Remove mo 1274 @echo ' clean - Remove most generated files but keep the config and'
1571 @echo ' enough bu 1275 @echo ' enough build support to build external modules'
1572 @echo ' mrproper - Remove al 1276 @echo ' mrproper - Remove all generated files + config + various backup files'
1573 @echo ' distclean - mrproper 1277 @echo ' distclean - mrproper + remove editor backup and patch files'
1574 @echo '' 1278 @echo ''
>> 1279 @echo 'Configuration targets:'
1575 @$(MAKE) -f $(srctree)/scripts/kconfi 1280 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1576 @echo '' 1281 @echo ''
1577 @echo 'Other generic targets:' 1282 @echo 'Other generic targets:'
1578 @echo ' all - Build all 1283 @echo ' all - Build all targets marked with [*]'
1579 @echo '* vmlinux - Build the 1284 @echo '* vmlinux - Build the bare kernel'
1580 @echo '* modules - Build all 1285 @echo '* modules - Build all modules'
1581 @echo ' modules_install - Install a 1286 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1582 @echo ' vdso_install - Install u !! 1287 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
>> 1288 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1583 @echo ' dir/ - Build all 1289 @echo ' dir/ - Build all files in dir and below'
1584 @echo ' dir/file.[ois] - Build spe 1290 @echo ' dir/file.[ois] - Build specified target only'
1585 @echo ' dir/file.ll - Build the <<
1586 @echo ' (requires <<
1587 @echo ' dir/file.lst - Build spe <<
1588 @echo ' (requires <<
1589 @echo ' dir/file.ko - Build mod 1291 @echo ' dir/file.ko - Build module including final link'
1590 @echo ' modules_prepare - Set up fo 1292 @echo ' modules_prepare - Set up for building external modules'
1591 @echo ' tags/TAGS - Generate 1293 @echo ' tags/TAGS - Generate tags file for editors'
1592 @echo ' cscope - Generate 1294 @echo ' cscope - Generate cscope index'
1593 @echo ' gtags - Generate !! 1295 @echo ' kernelrelease - Output the release version string'
1594 @echo ' kernelrelease - Output th !! 1296 @echo ' kernelversion - Output the version stored in Makefile'
1595 @echo ' kernelversion - Output th <<
1596 @echo ' image_name - Output th <<
1597 @echo ' headers_install - Install s 1297 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1598 echo ' (default: 1298 echo ' (default: $(INSTALL_HDR_PATH))'; \
1599 echo '' 1299 echo ''
1600 @echo 'Static analysers:' !! 1300 @echo 'Static analysers'
1601 @echo ' checkstack - Generate !! 1301 @echo ' checkstack - Generate a list of stack hogs'
1602 @echo ' with a st !! 1302 @echo ' namespacecheck - Name space analysis on compiled kernel'
1603 @echo ' versioncheck - Sanity ch 1303 @echo ' versioncheck - Sanity check on version.h usage'
1604 @echo ' includecheck - Check for 1304 @echo ' includecheck - Check for duplicate included header files'
1605 @echo ' export_report - List the 1305 @echo ' export_report - List the usages of all exported symbols'
1606 @echo ' headerdep - Detect in !! 1306 @echo ' headers_check - Sanity check on exported headers'
1607 @echo ' coccicheck - Check wit !! 1307 @echo ' headerdep - Detect inclusion cycles in headers'; \
1608 @echo ' clang-analyzer - Check wit !! 1308 echo ''
1609 @echo ' clang-tidy - Check wit <<
1610 @echo '' <<
1611 @echo 'Tools:' <<
1612 @echo ' nsdeps - Generate <<
1613 @echo '' <<
1614 @echo 'Kernel selftest:' <<
1615 @echo ' kselftest - Build a <<
1616 @echo ' Build, <<
1617 @echo ' running <<
1618 @echo ' Run as <<
1619 @echo ' kselftest-all - Build k <<
1620 @echo ' kselftest-install - Build a <<
1621 @echo ' kselftest-clean - Remove <<
1622 @echo ' kselftest-merge - Merge a <<
1623 @echo ' kselfte <<
1624 @echo '' <<
1625 @echo 'Rust targets:' <<
1626 @echo ' rustavailable - Checks wh <<
1627 @echo ' available <<
1628 @echo ' rustfmt - Reformat <<
1629 @echo ' rustfmtcheck - Checks if <<
1630 @echo ' is format <<
1631 @echo ' rustdoc - Generate <<
1632 @echo ' (requires <<
1633 @echo ' rusttest - Runs the <<
1634 @echo ' (requires <<
1635 @echo ' rust-analyzer - Generate <<
1636 @echo ' (requires <<
1637 @echo ' dir/file.[os] - Build spe <<
1638 @echo ' dir/file.rsi - Build mac <<
1639 @echo ' Run with <<
1640 @echo ' The outpu <<
1641 @echo ' dir/file.ll - Build the <<
1642 @echo '' <<
1643 @$(if $(dtstree), \ <<
1644 echo 'Devicetree:'; \ <<
1645 echo '* dtbs - <<
1646 echo ' dtbs_install - <<
1647 echo ' dt_binding_check - <<
1648 echo ' dt_binding_schemas - <<
1649 echo ' dtbs_check - <<
1650 echo '') <<
1651 <<
1652 @echo 'Userspace tools targets:' <<
1653 @echo ' use "make tools/help"' <<
1654 @echo ' or "cd tools; make help"' <<
1655 @echo '' <<
1656 @echo 'Kernel packaging:' 1309 @echo 'Kernel packaging:'
1657 @$(MAKE) -f $(srctree)/scripts/Makefi !! 1310 @$(MAKE) $(build)=$(package-dir) help
1658 @echo '' 1311 @echo ''
1659 @echo 'Documentation targets:' 1312 @echo 'Documentation targets:'
1660 @$(MAKE) -f $(srctree)/Documentation/ !! 1313 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1661 @echo '' 1314 @echo ''
1662 @echo 'Architecture-specific targets !! 1315 @echo 'Architecture specific targets ($(SRCARCH)):'
1663 @$(or $(archhelp),\ !! 1316 @$(if $(archhelp),$(archhelp),\
1664 echo ' No architecture-speci !! 1317 echo ' No architecture specific help defined for $(SRCARCH)')
1665 @echo '' 1318 @echo ''
1666 @$(if $(boards), \ 1319 @$(if $(boards), \
1667 $(foreach b, $(boards), \ 1320 $(foreach b, $(boards), \
1668 printf " %-27s - Build for % !! 1321 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1669 echo '') 1322 echo '')
1670 @$(if $(board-dirs), \ 1323 @$(if $(board-dirs), \
1671 $(foreach b, $(board-dirs), \ 1324 $(foreach b, $(board-dirs), \
1672 printf " %-16s - Show %s-spe 1325 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1673 printf " %-16s - Show all of 1326 printf " %-16s - Show all of the above\\n" help-boards; \
1674 echo '') 1327 echo '')
1675 1328
1676 @echo ' make V=n [targets] 1: ver !! 1329 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1677 @echo ' 2: giv !! 1330 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1678 @echo ' V=1 an <<
1679 @echo ' make O=dir [targets] Locate 1331 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1680 @echo ' make C=1 [targets] Check !! 1332 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1681 @echo ' (spars <<
1682 @echo ' make C=2 [targets] Force 1333 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1683 @echo ' make RECORDMCOUNT_WARN=1 [t <<
1684 @echo ' make W=n [targets] Enable <<
1685 @echo ' 1: warnings w <<
1686 @echo ' 2: warnings w <<
1687 @echo ' 3: more obscu <<
1688 @echo ' c: extra chec <<
1689 @echo ' e: warnings a <<
1690 @echo ' Multiple leve <<
1691 @$(if $(dtstree), \ <<
1692 echo ' make CHECK_DTBS=1 [ta <<
1693 echo ' This can be ap <<
1694 ) <<
1695 @echo '' 1334 @echo ''
1696 @echo 'Execute "make" or "make all" 1335 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1697 @echo 'For further info see the ./RE 1336 @echo 'For further info see the ./README file'
1698 1337
1699 1338
1700 help-board-dirs := $(addprefix help-,$(board- 1339 help-board-dirs := $(addprefix help-,$(board-dirs))
1701 1340
1702 help-boards: $(help-board-dirs) 1341 help-boards: $(help-board-dirs)
1703 1342
1704 boards-per-dir = $(sort $(notdir $(wildcard $ !! 1343 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1705 1344
1706 $(help-board-dirs): help-%: 1345 $(help-board-dirs): help-%:
1707 @echo 'Architecture-specific targets !! 1346 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1708 @$(if $(boards-per-dir), \ 1347 @$(if $(boards-per-dir), \
1709 $(foreach b, $(boards-per-dir 1348 $(foreach b, $(boards-per-dir), \
1710 printf " %-24s - Build for % 1349 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1711 echo '') 1350 echo '')
1712 1351
1713 1352
1714 # Documentation targets 1353 # Documentation targets
1715 # ------------------------------------------- 1354 # ---------------------------------------------------------------------------
1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html !! 1355 %docs: scripts_basic FORCE
1717 linkcheckdocs dochelp refcheck !! 1356 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1718 PHONY += $(DOC_TARGETS) <<
1719 $(DOC_TARGETS): <<
1720 $(Q)$(MAKE) $(build)=Documentation $@ <<
1721 <<
1722 <<
1723 # Rust targets <<
1724 # ------------------------------------------- <<
1725 <<
1726 # "Is Rust available?" target <<
1727 PHONY += rustavailable <<
1728 rustavailable: <<
1729 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip <<
1730 <<
1731 # Documentation target <<
1732 # <<
1733 # Using the singular to avoid running afoul o <<
1734 PHONY += rustdoc <<
1735 rustdoc: prepare <<
1736 $(Q)$(MAKE) $(build)=rust $@ <<
1737 <<
1738 # Testing target <<
1739 PHONY += rusttest <<
1740 rusttest: prepare <<
1741 $(Q)$(MAKE) $(build)=rust $@ <<
1742 <<
1743 # Formatting targets <<
1744 PHONY += rustfmt rustfmtcheck <<
1745 <<
1746 # We skip `rust/alloc` since we want to minim <<
1747 # <<
1748 # We match using absolute paths since `find` <<
1749 # when matching, which is a problem when e.g. <<
1750 # We `grep` afterwards in order to remove the <<
1751 rustfmt: <<
1752 $(Q)find $(abs_srctree) -type f -name <<
1753 -o -path $(abs_srctree)/rust/ <<
1754 -o -path $(abs_objtree)/rust/ <<
1755 | grep -Fv $(abs_srctree)/rus <<
1756 | grep -Fv $(abs_objtree)/rus <<
1757 | grep -Fv generated \ <<
1758 | xargs $(RUSTFMT) $(rustfmt_ <<
1759 <<
1760 rustfmtcheck: rustfmt_flags = --check <<
1761 rustfmtcheck: rustfmt <<
1762 <<
1763 # Misc <<
1764 # ------------------------------------------- <<
1765 <<
1766 PHONY += misc-check <<
1767 misc-check: <<
1768 $(Q)$(srctree)/scripts/misc-check <<
1769 <<
1770 all: misc-check <<
1771 <<
1772 PHONY += scripts_gdb <<
1773 scripts_gdb: prepare0 <<
1774 $(Q)$(MAKE) $(build)=scripts/gdb <<
1775 $(Q)ln -fsn $(abspath $(srctree)/scri <<
1776 <<
1777 ifdef CONFIG_GDB_SCRIPTS <<
1778 all: scripts_gdb <<
1779 endif <<
1780 1357
1781 else # KBUILD_EXTMOD 1358 else # KBUILD_EXTMOD
1782 1359
1783 filechk_kernel.release = echo $(KERNELRELEASE <<
1784 <<
1785 ### 1360 ###
1786 # External module support. 1361 # External module support.
1787 # When building external modules the kernel u 1362 # When building external modules the kernel used as basis is considered
1788 # read-only, and no consistency checks are ma 1363 # read-only, and no consistency checks are made and the make
1789 # system is not used on the basis kernel. If 1364 # system is not used on the basis kernel. If updates are required
1790 # in the basis kernel ordinary make commands !! 1365 # in the basis kernel ordinary make commands (without M=...) must
>> 1366 # be used.
>> 1367 #
>> 1368 # The following are the only valid targets when building external
>> 1369 # modules.
>> 1370 # make M=dir clean Delete all automatically generated files
>> 1371 # make M=dir modules Make all modules in specified dir
>> 1372 # make M=dir Same as 'make M=dir modules'
>> 1373 # make M=dir modules_install
>> 1374 # Install the modules built in the module directory
>> 1375 # Assumes install directory is already created
1791 1376
1792 # We are always building only modules. !! 1377 # We are always building modules
1793 KBUILD_BUILTIN := <<
1794 KBUILD_MODULES := 1 1378 KBUILD_MODULES := 1
>> 1379 PHONY += crmodverdir
>> 1380 crmodverdir:
>> 1381 $(cmd_crmodverdir)
>> 1382
>> 1383 PHONY += $(objtree)/Module.symvers
>> 1384 $(objtree)/Module.symvers:
>> 1385 @test -e $(objtree)/Module.symvers || ( \
>> 1386 echo; \
>> 1387 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
>> 1388 echo " is missing; modules will have no dependencies and modversions."; \
>> 1389 echo )
>> 1390
>> 1391 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
>> 1392 PHONY += $(module-dirs) modules
>> 1393 $(module-dirs): crmodverdir $(objtree)/Module.symvers
>> 1394 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1795 1395
1796 build-dir := $(KBUILD_EXTMOD) !! 1396 modules: $(module-dirs)
>> 1397 @$(kecho) ' Building modules, stage 2.';
>> 1398 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1797 1399
1798 compile_commands.json: $(extmod_prefix)compil !! 1400 PHONY += modules_install
1799 PHONY += compile_commands.json !! 1401 modules_install: _emodinst_ _emodinst_post
1800 1402
1801 clean-dirs := $(KBUILD_EXTMOD) !! 1403 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1802 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1404 PHONY += _emodinst_
1803 $(KBUILD_EXTMOD)/compile_commands.jso !! 1405 _emodinst_:
1804 !! 1406 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1805 PHONY += prepare !! 1407 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1806 # now expand this into a simple variable to r !! 1408
1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1409 PHONY += _emodinst_post
1808 prepare: !! 1410 _emodinst_post: _emodinst_
1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF !! 1411 $(call cmd,depmod)
1810 echo >&2 "warning: the compil !! 1412
1811 echo >&2 " The kernel was bu !! 1413 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1812 echo >&2 " You are using: !! 1414
1813 fi !! 1415 PHONY += $(clean-dirs) clean
>> 1416 $(clean-dirs):
>> 1417 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
>> 1418
>> 1419 clean: rm-dirs := $(MODVERDIR)
>> 1420 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \
>> 1421 $(KBUILD_EXTMOD)/Module.markers \
>> 1422 $(KBUILD_EXTMOD)/modules.order
>> 1423 clean: $(clean-dirs)
>> 1424 $(call cmd,rmdirs)
>> 1425 $(call cmd,rmfiles)
>> 1426 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
>> 1427 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
>> 1428 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
>> 1429 -o -name '*.gcno' \) -type f -print | xargs rm -f
1814 1430
1815 PHONY += help <<
1816 help: 1431 help:
1817 @echo ' Building external modules.' 1432 @echo ' Building external modules.'
1818 @echo ' Syntax: make -C path/to/ker 1433 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1819 @echo '' 1434 @echo ''
1820 @echo ' modules - default t 1435 @echo ' modules - default target, build the module(s)'
1821 @echo ' modules_install - install t 1436 @echo ' modules_install - install the module'
1822 @echo ' clean - remove ge 1437 @echo ' clean - remove generated files in module directory only'
1823 @echo ' rust-analyzer - generate <<
1824 @echo '' 1438 @echo ''
1825 1439
1826 ifndef CONFIG_MODULES !! 1440 # Dummies...
1827 modules modules_install: __external_modules_e !! 1441 PHONY += prepare scripts
1828 __external_modules_error: !! 1442 prepare: ;
1829 @echo >&2 '***' !! 1443 scripts: ;
1830 @echo >&2 '*** The present kernel dis <<
1831 @echo >&2 '*** You cannot build or in <<
1832 @echo >&2 '***' <<
1833 @false <<
1834 endif <<
1835 <<
1836 endif # KBUILD_EXTMOD 1444 endif # KBUILD_EXTMOD
1837 1445
1838 # ------------------------------------------- <<
1839 # Modules <<
1840 <<
1841 PHONY += modules modules_install modules_sign <<
1842 <<
1843 modules_install: <<
1844 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1845 sign-only=$(if $(filter modules_insta <<
1846 <<
1847 ifeq ($(CONFIG_MODULE_SIG),y) <<
1848 # modules_sign is a subset of modules_install <<
1849 # 'make modules_install modules_sign' is equi <<
1850 modules_sign: modules_install <<
1851 @: <<
1852 else <<
1853 modules_sign: <<
1854 @echo >&2 '***' <<
1855 @echo >&2 '*** CONFIG_MODULE_SIG is d <<
1856 @echo >&2 '***' <<
1857 @false <<
1858 endif <<
1859 <<
1860 ifdef CONFIG_MODULES <<
1861 <<
1862 $(MODORDER): $(build-dir) <<
1863 @: <<
1864 <<
1865 # KBUILD_MODPOST_NOFINAL can be set to skip t <<
1866 # This is solely useful to speed up test comp <<
1867 modules: modpost <<
1868 ifneq ($(KBUILD_MODPOST_NOFINAL),1) <<
1869 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1870 endif <<
1871 <<
1872 PHONY += modules_check <<
1873 modules_check: $(MODORDER) <<
1874 $(Q)$(CONFIG_SHELL) $(srctree)/script <<
1875 <<
1876 else # CONFIG_MODULES <<
1877 <<
1878 modules: <<
1879 @: <<
1880 <<
1881 KBUILD_MODULES := <<
1882 <<
1883 endif # CONFIG_MODULES <<
1884 <<
1885 PHONY += modpost <<
1886 modpost: $(if $(single-build),, $(if $(KBUILD <<
1887 $(if $(KBUILD_MODULES), modules_chec <<
1888 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1889 <<
1890 # Single targets <<
1891 # ------------------------------------------- <<
1892 # To build individual files in subdirectories <<
1893 # <<
1894 # make foo/bar/baz.s <<
1895 # <<
1896 # The supported suffixes for single-target ar <<
1897 # <<
1898 # To build only under specific subdirectories <<
1899 # <<
1900 # make foo/bar/baz/ <<
1901 <<
1902 ifdef single-build <<
1903 <<
1904 # .ko is special because modpost is needed <<
1905 single-ko := $(sort $(filter %.ko, $(MAKECMDG <<
1906 single-no-ko := $(filter-out $(single-ko), $( <<
1907 $(foreach x, o mod, $(patsubs <<
1908 <<
1909 $(single-ko): single_modules <<
1910 @: <<
1911 $(single-no-ko): $(build-dir) <<
1912 @: <<
1913 <<
1914 # Remove MODORDER when done because it is not <<
1915 PHONY += single_modules <<
1916 single_modules: $(single-no-ko) modules_prepa <<
1917 $(Q){ $(foreach m, $(single-ko), echo <<
1918 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1919 ifneq ($(KBUILD_MODPOST_NOFINAL),1) <<
1920 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1921 endif <<
1922 $(Q)rm -f $(MODORDER) <<
1923 <<
1924 single-goals := $(addprefix $(build-dir)/, $( <<
1925 <<
1926 KBUILD_MODULES := 1 <<
1927 <<
1928 endif <<
1929 <<
1930 # Preset locale variables to speed up the bui <<
1931 # tweaks to this spot to avoid wrong language <<
1932 # make menuconfig etc. <<
1933 # Error messages still appears in the origina <<
1934 PHONY += $(build-dir) <<
1935 $(build-dir): prepare <<
1936 $(Q)$(MAKE) $(build)=$@ need-builtin= <<
1937 <<
1938 clean-dirs := $(addprefix _clean_, $(clean-di <<
1939 PHONY += $(clean-dirs) clean <<
1940 $(clean-dirs): <<
1941 $(Q)$(MAKE) $(clean)=$(patsubst _clea <<
1942 <<
1943 clean: $(clean-dirs) <<
1944 $(call cmd,rmfiles) <<
1945 @find $(or $(KBUILD_EXTMOD), .) $(RCS <<
1946 \( -name '*.[aios]' -o -name <<
1947 -o -name '*.ko.*' \ <<
1948 -o -name '*.dtb' -o -name '*. <<
1949 -o -name '*.dtb.S' -o -name ' <<
1950 -o -name '*.dt.yaml' -o -name <<
1951 -o -name '*.dwo' -o -name '*. <<
1952 -o -name '*.su' -o -name '*.m <<
1953 -o -name '.*.d' -o -name '.*. <<
1954 -o -name '*.lex.c' -o -name ' <<
1955 -o -name '*.asn1.[ch]' \ <<
1956 -o -name '*.symtypes' -o -nam <<
1957 -o -name '*.c.[012]*.*' \ <<
1958 -o -name '*.ll' \ <<
1959 -o -name '*.gcno' \ <<
1960 \) -type f -print \ <<
1961 -o -name '.tmp_*' -print \ <<
1962 | xargs rm -rf <<
1963 <<
1964 # Generate tags for editors 1446 # Generate tags for editors
1965 # ------------------------------------------- 1447 # ---------------------------------------------------------------------------
1966 quiet_cmd_tags = GEN $@ 1448 quiet_cmd_tags = GEN $@
1967 cmd_tags = $(BASH) $(srctree)/scripts/t !! 1449 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1968 1450
1969 tags TAGS cscope gtags: FORCE !! 1451 tags TAGS cscope: FORCE
1970 $(call cmd,tags) 1452 $(call cmd,tags)
1971 1453
1972 # Generate rust-project.json (a file that des <<
1973 # Rust projects) for rust-analyzer (an implem <<
1974 # Protocol). <<
1975 PHONY += rust-analyzer <<
1976 rust-analyzer: <<
1977 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip <<
1978 $(Q)$(MAKE) $(build)=rust $@ <<
1979 <<
1980 # Script to generate missing namespace depend <<
1981 # ------------------------------------------- <<
1982 <<
1983 PHONY += nsdeps <<
1984 nsdeps: export KBUILD_NSDEPS=1 <<
1985 nsdeps: modules <<
1986 $(Q)$(CONFIG_SHELL) $(srctree)/script <<
1987 <<
1988 # Clang Tooling <<
1989 # ------------------------------------------- <<
1990 <<
1991 quiet_cmd_gen_compile_commands = GEN $@ <<
1992 cmd_gen_compile_commands = $(PYTHON3) $ <<
1993 <<
1994 $(extmod_prefix)compile_commands.json: $(srct <<
1995 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K <<
1996 $(if $(CONFIG_MODULES), $(MODORDER)) <<
1997 $(call if_changed,gen_compile_command <<
1998 <<
1999 targets += $(extmod_prefix)compile_commands.j <<
2000 <<
2001 PHONY += clang-tidy clang-analyzer <<
2002 <<
2003 ifdef CONFIG_CC_IS_CLANG <<
2004 quiet_cmd_clang_tools = CHECK $< <<
2005 cmd_clang_tools = $(PYTHON3) $(srctree) <<
2006 <<
2007 clang-tidy clang-analyzer: $(extmod_prefix)co <<
2008 $(call cmd,clang_tools) <<
2009 else <<
2010 clang-tidy clang-analyzer: <<
2011 @echo "$@ requires CC=clang" >&2 <<
2012 @false <<
2013 endif <<
2014 <<
2015 # Scripts to check various things for consist 1454 # Scripts to check various things for consistency
2016 # ------------------------------------------- 1455 # ---------------------------------------------------------------------------
2017 1456
2018 PHONY += includecheck versioncheck coccicheck <<
2019 <<
2020 includecheck: 1457 includecheck:
2021 find $(srctree)/* $(RCS_FIND_IGNORE) !! 1458 find * $(RCS_FIND_IGNORE) \
2022 -name '*.[hcS]' -type f -prin 1459 -name '*.[hcS]' -type f -print | sort \
2023 | xargs $(PERL) -w $(srctree) 1460 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
2024 1461
2025 versioncheck: 1462 versioncheck:
2026 find $(srctree)/* $(RCS_FIND_IGNORE) !! 1463 find * $(RCS_FIND_IGNORE) \
2027 -name '*.[hcS]' -type f -prin 1464 -name '*.[hcS]' -type f -print | sort \
2028 | xargs $(PERL) -w $(srctree) 1465 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
2029 1466
2030 coccicheck: !! 1467 namespacecheck:
2031 $(Q)$(BASH) $(srctree)/scripts/$@ !! 1468 $(PERL) $(srctree)/scripts/namespace.pl
2032 1469
2033 export_report: 1470 export_report:
2034 $(PERL) $(srctree)/scripts/export_rep 1471 $(PERL) $(srctree)/scripts/export_report.pl
2035 1472
2036 PHONY += checkstack kernelrelease kernelversi !! 1473 endif #ifeq ($(config-targets),1)
>> 1474 endif #ifeq ($(mixed-targets),1)
>> 1475
>> 1476 PHONY += checkstack kernelrelease kernelversion
2037 1477
2038 # UML needs a little special treatment here. 1478 # UML needs a little special treatment here. It wants to use the host
2039 # toolchain, so needs $(SUBARCH) passed to ch 1479 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
2040 # else wants $(ARCH), including people doing 1480 # else wants $(ARCH), including people doing cross-builds, which means
2041 # that $(SUBARCH) doesn't work here. 1481 # that $(SUBARCH) doesn't work here.
2042 ifeq ($(ARCH), um) 1482 ifeq ($(ARCH), um)
2043 CHECKSTACK_ARCH := $(SUBARCH) 1483 CHECKSTACK_ARCH := $(SUBARCH)
2044 else 1484 else
2045 CHECKSTACK_ARCH := $(ARCH) 1485 CHECKSTACK_ARCH := $(ARCH)
2046 endif 1486 endif
2047 MINSTACKSIZE ?= 100 <<
2048 checkstack: 1487 checkstack:
2049 $(OBJDUMP) -d vmlinux $$(find . -name 1488 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
2050 $(PERL) $(srctree)/scripts/checkstack !! 1489 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
2051 1490
2052 kernelrelease: 1491 kernelrelease:
2053 @$(filechk_kernel.release) !! 1492 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
2054 !! 1493 $(error kernelrelease not valid - run 'make prepare' to update it))
2055 kernelversion: 1494 kernelversion:
2056 @echo $(KERNELVERSION) 1495 @echo $(KERNELVERSION)
2057 1496
2058 image_name: !! 1497 # Single targets
2059 @echo $(KBUILD_IMAGE) !! 1498 # ---------------------------------------------------------------------------
>> 1499 # Single targets are compatible with:
>> 1500 # - build with mixed source and output
>> 1501 # - build with separate output dir 'make O=...'
>> 1502 # - external modules
>> 1503 #
>> 1504 # target-dir => where to store outputfile
>> 1505 # build-dir => directory in kernel source tree to use
>> 1506
>> 1507 ifeq ($(KBUILD_EXTMOD),)
>> 1508 build-dir = $(patsubst %/,%,$(dir $@))
>> 1509 target-dir = $(dir $@)
>> 1510 else
>> 1511 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
>> 1512 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
>> 1513 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
>> 1514 endif
>> 1515
>> 1516 %.s: %.c prepare scripts FORCE
>> 1517 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
>> 1518 %.i: %.c prepare scripts FORCE
>> 1519 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
>> 1520 %.o: %.c prepare scripts FORCE
>> 1521 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
>> 1522 %.lst: %.c prepare scripts FORCE
>> 1523 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
>> 1524 %.s: %.S prepare scripts FORCE
>> 1525 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
>> 1526 %.o: %.S prepare scripts FORCE
>> 1527 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
>> 1528 %.symtypes: %.c prepare scripts FORCE
>> 1529 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
>> 1530
>> 1531 # Modules
>> 1532 /: prepare scripts FORCE
>> 1533 $(cmd_crmodverdir)
>> 1534 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
>> 1535 $(build)=$(build-dir)
>> 1536 %/: prepare scripts FORCE
>> 1537 $(cmd_crmodverdir)
>> 1538 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
>> 1539 $(build)=$(build-dir)
>> 1540 %.ko: prepare scripts FORCE
>> 1541 $(cmd_crmodverdir)
>> 1542 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
>> 1543 $(build)=$(build-dir) $(@:.ko=.o)
>> 1544 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
>> 1545
>> 1546 # FIXME Should go into a make.lib or something
>> 1547 # ===========================================================================
2060 1548
2061 PHONY += run-command !! 1549 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
2062 run-command: !! 1550 cmd_rmdirs = rm -rf $(rm-dirs)
2063 $(Q)$(KBUILD_RUN_COMMAND) <<
2064 1551
2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1552 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
2066 cmd_rmfiles = rm -rf $(rm-files) !! 1553 cmd_rmfiles = rm -f $(rm-files)
2067 1554
2068 # read saved command lines for existing targe !! 1555 # Run depmod only if we have System.map and depmod is executable
2069 existing-targets := $(wildcard $(sort $(targe !! 1556 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
>> 1557 cmd_depmod = \
>> 1558 if [ -r System.map -a -x $(DEPMOD) ]; then \
>> 1559 $(DEPMOD) -ae -F System.map \
>> 1560 $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \
>> 1561 $(KERNELRELEASE); \
>> 1562 fi
>> 1563
>> 1564 # Create temporary dir for module support files
>> 1565 # clean it up only when building all modules
>> 1566 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
>> 1567 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
>> 1568
>> 1569 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
>> 1570 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \
>> 1571 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
>> 1572
>> 1573 quiet_cmd_as_o_S = AS $@
>> 1574 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
>> 1575
>> 1576 # read all saved command lines
>> 1577
>> 1578 targets := $(wildcard $(sort $(targets)))
>> 1579 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
>> 1580
>> 1581 ifneq ($(cmd_files),)
>> 1582 $(cmd_files): ; # Do not try to update included dependency files
>> 1583 include $(cmd_files)
>> 1584 endif
2070 1585
2071 -include $(foreach f,$(existing-targets),$(di !! 1586 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
>> 1587 # Usage:
>> 1588 # $(Q)$(MAKE) $(clean)=dir
>> 1589 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
2072 1590
2073 endif # config-build !! 1591 endif # skip-makefile
2074 endif # mixed-build <<
2075 endif # need-sub-make <<
2076 1592
2077 PHONY += FORCE 1593 PHONY += FORCE
2078 FORCE: 1594 FORCE:
2079 1595
2080 # Declare the contents of the PHONY variable !! 1596 # Declare the contents of the .PHONY variable as phony. We keep that
2081 # information in a variable so we can use it 1597 # information in a variable so we can use it in if_changed and friends.
2082 .PHONY: $(PHONY) 1598 .PHONY: $(PHONY)
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