1 # SPDX-License-Identifier: GPL-2.0 !! 1 all:
2 VERSION = 6 !! 2 $(MAKE) -C sbin all
3 PATCHLEVEL = 11 !! 3 $(MAKE) -C usr_sbin all
4 SUBLEVEL = 5 !! 4 $(MAKE) -C usr_lib_ccs all
5 EXTRAVERSION = !! 5
6 NAME = Baby Opossum Posse !! 6 install: all
>> 7 $(MAKE) -C sbin install
>> 8 $(MAKE) -C usr_sbin install
>> 9 $(MAKE) -C usr_lib_ccs install
>> 10 $(MAKE) -C usr_share_man install
>> 11
>> 12 clean:
>> 13 ##
>> 14 ## I don't enable "find" line because older versions does not support -delete
>> 15 ## action.
>> 16 ##
>> 17 # find -name '*~' -delete
>> 18 $(MAKE) -C sbin clean
>> 19 $(MAKE) -C usr_sbin clean
>> 20 $(MAKE) -C usr_lib_ccs clean
7 21
8 # *DOCUMENTATION* !! 22 .PHONY: clean install
9 # To see a list of typical targets execute "ma <<
10 # More info can be located in ./README <<
11 # Comments in this file are targeted only to t <<
12 # expect to learn how to build the kernel read <<
13 <<
14 ifeq ($(filter output-sync,$(.FEATURES)),) <<
15 $(error GNU Make >= 4.0 is required. Your Make <<
16 endif <<
17 <<
18 $(if $(filter __%, $(MAKECMDGOALS)), \ <<
19 $(error targets prefixed with '__' are <<
20 <<
21 # That's our default target when none is given <<
22 PHONY := __all <<
23 __all: <<
24 <<
25 # We are using a recursive build, so we need t <<
26 # to get the ordering right. <<
27 # <<
28 # Most importantly: sub-Makefiles should only <<
29 # their own directory. If in some directory we <<
30 # a file in another dir (which doesn't happen <<
31 # unavoidable when linking the built-in.a targ <<
32 # turn into vmlinux), we will call a sub make <<
33 # after that we are sure that everything which <<
34 # is now up to date. <<
35 # <<
36 # The only cases where we need to modify files <<
37 # effects are thus separated out and done befo <<
38 # descending is started. They are now explicit <<
39 # prepare rule. <<
40 <<
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) $(build)=scripts/basic <<
75 # <<
76 # If KBUILD_VERBOSE contains 1, the whole comm <<
77 # If KBUILD_VERBOSE contains 2, the reason for <<
78 # <<
79 # To put more focus on warnings, be less verbo <<
80 # Use 'make V=1' to see the full commands <<
81 <<
82 ifeq ("$(origin V)", "command line") <<
83 KBUILD_VERBOSE = $(V) <<
84 endif <<
85 <<
86 quiet = quiet_ <<
87 Q = @ <<
88 <<
89 ifneq ($(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 <<
100 <<
101 export quiet Q KBUILD_VERBOSE <<
102 <<
103 # Call a source code checker (by default, "spa <<
104 # C compilation. <<
105 # <<
106 # Use 'make C=1' to enable checking of only re <<
107 # Use 'make C=2' to enable checking of *all* s <<
108 # of whether they are re-compiled or not. <<
109 # <<
110 # See the file "Documentation/dev-tools/sparse <<
111 # including where to get the "sparse" utility. <<
112 <<
113 ifeq ("$(origin C)", "command line") <<
114 KBUILD_CHECKSRC = $(C) <<
115 endif <<
116 ifndef KBUILD_CHECKSRC <<
117 KBUILD_CHECKSRC = 0 <<
118 endif <<
119 <<
120 export KBUILD_CHECKSRC <<
121 <<
122 # Enable "clippy" (a linter) as part of the Ru <<
123 # <<
124 # Use 'make CLIPPY=1' to enable it. <<
125 ifeq ("$(origin CLIPPY)", "command line") <<
126 KBUILD_CLIPPY := $(CLIPPY) <<
127 endif <<
128 <<
129 export KBUILD_CLIPPY <<
130 <<
131 # Use make M=dir or set the environment variab <<
132 # directory of external module to build. Setti <<
133 ifeq ("$(origin M)", "command line") <<
134 KBUILD_EXTMOD := $(M) <<
135 endif <<
136 <<
137 $(if $(word 2, $(KBUILD_EXTMOD)), \ <<
138 $(error building multiple external mod <<
139 <<
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 := $(W) <<
155 endif <<
156 <<
157 export KBUILD_EXTRA_WARN <<
158 <<
159 # Kbuild will save output files in the current <<
160 # This does not need to match to the root of t <<
161 # <<
162 # For example, you can do this: <<
163 # <<
164 # cd /dir/to/store/output/files; make -f /dir <<
165 # <<
166 # If you want to save output files in a differ <<
167 # two syntaxes to specify it. <<
168 # <<
169 # 1) O= <<
170 # Use "make O=dir/to/store/output/files/" <<
171 # <<
172 # 2) Set KBUILD_OUTPUT <<
173 # Set the environment variable KBUILD_OUTPUT t <<
174 # export KBUILD_OUTPUT=dir/to/store/output/fil <<
175 # <<
176 # The O= assignment takes precedence over the <<
177 # variable. <<
178 <<
179 # Do we want to change the working directory? <<
180 ifeq ("$(origin O)", "command line") <<
181 KBUILD_OUTPUT := $(O) <<
182 endif <<
183 <<
184 ifneq ($(KBUILD_OUTPUT),) <<
185 # $(realpath ...) gets empty if the path does <<
186 $(shell mkdir -p "$(KBUILD_OUTPUT)") <<
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),$(CURDIR)) <<
201 # Suppress "Entering directory ..." if we are <<
202 no-print-directory := --no-print-directory <<
203 else <<
204 # Recursion to show "Entering directory ..." <<
205 need-sub-make := 1 <<
206 endif <<
207 <<
208 ifeq ($(filter --no-print-directory, $(MAKEFLA <<
209 # If --no-print-directory is unset, recurse on <<
210 # You may end up recursing into __sub-make twi <<
211 # behavior change in GNU Make 4.4.1. <<
212 need-sub-make := 1 <<
213 endif <<
214 <<
215 ifeq ($(need-sub-make),1) <<
216 <<
217 PHONY += $(MAKECMDGOALS) __sub-make <<
218 <<
219 $(filter-out $(this-makefile), $(MAKECMDGOALS) <<
220 @: <<
221 <<
222 # Invoke a second make in the output directory <<
223 __sub-make: <<
224 $(Q)$(MAKE) $(no-print-directory) -C $ <<
225 -f $(abs_srctree)/Makefile $(MAKECMDGO <<
226 <<
227 else # need-sub-make <<
228 <<
229 # We process the rest of the Makefile if this <<
230 <<
231 ifeq ($(abs_srctree),$(abs_objtree)) <<
232 # building in the source tree <<
233 srctree := . <<
234 building_out_of_srctree := <<
235 else <<
236 ifeq ($(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 ($(KBUILD_EXTMOD),) <<
306 ifneq ($(filter %config,$(MAKECMDGOALS)),) <<
307 config-build := 1 <<
308 ifneq ($(words $(MAKECMDGOALS)),1) <<
309 mixed-build := 1 <<
310 endif <<
311 endif <<
312 endif <<
313 <<
314 # We cannot build single targets and the other <<
315 ifneq ($(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 <<
335 <<
336 ifdef mixed-build <<
337 # ============================================ <<
338 # We're called with mixed targets (*config and <<
339 # Handle them one by one. <<
340 <<
341 PHONY += $(MAKECMDGOALS) __build_one_by_one <<
342 <<
343 $(MAKECMDGOALS): __build_one_by_one <<
344 @: <<
345 <<
346 __build_one_by_one: <<
347 $(Q)set -e; \ <<
348 for i in $(MAKECMDGOALS); do \ <<
349 $(MAKE) -f $(srctree)/Makefile <<
350 done <<
351 <<
352 else # !mixed-build <<
353 <<
354 include $(srctree)/scripts/Kbuild.include <<
355 <<
356 # Read KERNELRELEASE from include/config/kerne <<
357 KERNELRELEASE = $(call read-file, include/conf <<
358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. <<
359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA <<
360 <<
361 include $(srctree)/scripts/subarch.include <<
362 <<
363 # Cross compiling and selecting different set <<
364 # -------------------------------------------- <<
365 # <<
366 # When performing cross compilation for other <<
367 # to the target architecture. (See arch/* for <<
368 # ARCH can be set during invocation of make: <<
369 # make ARCH=arm64 <<
370 # Another way is to have ARCH set in the envir <<
371 # The default ARCH is the host where make is e <<
372 <<
373 # CROSS_COMPILE specify the prefix used for al <<
374 # during compilation. Only gcc and related bin <<
375 # are prefixed with $(CROSS_COMPILE). <<
376 # CROSS_COMPILE can be set on the command line <<
377 # make CROSS_COMPILE=aarch64-linux-gnu- <<
378 # Alternatively CROSS_COMPILE can be set in th <<
379 # Default value for CROSS_COMPILE is not to pr <<
380 # Note: Some architectures assign CROSS_COMPIL <<
381 ARCH ?= $(SUBARCH) <<
382 <<
383 # Architecture as present in compile.h <<
384 UTS_MACHINE := $(ARCH) <<
385 SRCARCH := $(ARCH) <<
386 <<
387 # Additional ARCH settings for x86 <<
388 ifeq ($(ARCH),i386) <<
389 SRCARCH := x86 <<
390 endif <<
391 ifeq ($(ARCH),x86_64) <<
392 SRCARCH := x86 <<
393 endif <<
394 <<
395 # Additional ARCH settings for sparc <<
396 ifeq ($(ARCH),sparc32) <<
397 SRCARCH := sparc <<
398 endif <<
399 ifeq ($(ARCH),sparc64) <<
400 SRCARCH := sparc <<
401 endif <<
402 <<
403 # Additional ARCH settings for parisc <<
404 ifeq ($(ARCH),parisc64) <<
405 SRCARCH := parisc <<
406 endif <<
407 <<
408 export cross_compiling := <<
409 ifneq ($(SRCARCH),$(SUBARCH)) <<
410 cross_compiling := 1 <<
411 endif <<
412 <<
413 KCONFIG_CONFIG ?= .config <<
414 export KCONFIG_CONFIG <<
415 <<
416 # SHELL used by kbuild <<
417 CONFIG_SHELL := sh <<
418 <<
419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS <<
420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG <<
421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d <<
422 <<
423 ifneq ($(LLVM),) <<
424 ifneq ($(filter %/,$(LLVM)),) <<
425 LLVM_PREFIX := $(LLVM) <<
426 else ifneq ($(filter -%,$(LLVM)),) <<
427 LLVM_SUFFIX := $(LLVM) <<
428 endif <<
429 <<
430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) <<
431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) <<
432 else <<
433 HOSTCC = gcc <<
434 HOSTCXX = g++ <<
435 endif <<
436 HOSTRUSTC = rustc <<
437 HOSTPKG_CONFIG = pkg-config <<
438 <<
439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto <<
440 -O2 -fomit-frame-poin <<
441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) <<
442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) <<
443 <<
444 # These flags apply to all Rust code in the tr <<
445 # host programs. <<
446 export rust_common_flags := --edition=2021 \ <<
447 -Zbinary_dep_depin <<
448 -Astable_features <<
449 -Dunsafe_op_in_uns <<
450 -Dnon_ascii_idents <<
451 -Wrust_2018_idioms <<
452 -Wunreachable_pub <<
453 -Wmissing_docs \ <<
454 -Wrustdoc::missing <<
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 <<
471 # Make variables (CC, etc...) <<
472 CPP = $(CC) -E <<
473 ifneq ($(LLVM),) <<
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 <<
485 AR = $(CROSS_COMPILE)ar <<
486 NM = $(CROSS_COMPILE)nm <<
487 OBJCOPY = $(CROSS_COMPILE)objcopy <<
488 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 = $(objtree)/tools/bpf/resolve <<
499 LEX = flex <<
500 YACC = bison <<
501 AWK = awk <<
502 INSTALLKERNEL := installkernel <<
503 PERL = perl <<
504 PYTHON3 = python3 <<
505 CHECK = sparse <<
506 BASH = bash <<
507 KGZIP = gzip <<
508 KBZIP2 = bzip2 <<
509 KLZOP = lzop <<
510 LZMA = lzma <<
511 LZ4 = lz4c <<
512 XZ = xz <<
513 ZSTD = zstd <<
514 <<
515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC <<
516 -Wbitwise -Wno-return-void - <<
517 NOSTDINC_FLAGS := <<
518 CFLAGS_MODULE = <<
519 RUSTFLAGS_MODULE = <<
520 AFLAGS_MODULE = <<
521 LDFLAGS_MODULE = <<
522 CFLAGS_KERNEL = <<
523 RUSTFLAGS_KERNEL = <<
524 AFLAGS_KERNEL = <<
525 LDFLAGS_vmlinux = <<
526 <<
527 # Use USERINCLUDE when you must reference the <<
528 USERINCLUDE := \ <<
529 -I$(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 $(srctree)/include/li <<
535 <<
536 # Use LINUXINCLUDE when you must reference the <<
537 # Needed to be compatible with the O= option <<
538 LINUXINCLUDE := \ <<
539 -I$(srctree)/arch/$(SRCARCH)/i <<
540 -I$(objtree)/arch/$(SRCARCH)/i <<
541 $(if $(building_out_of_srctree <<
542 -I$(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 <<
555 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 <<
582 ifdef RUST_LIB_SRC <<
583 export RUST_LIB_SRC <<
584 endif <<
585 <<
586 # Allows the usage of unstable features in sta <<
587 export RUSTC_BOOTSTRAP := 1 <<
588 <<
589 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K <<
590 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q <<
591 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS <<
592 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF <<
593 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ <<
594 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD <<
595 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS <<
596 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS <<
597 <<
598 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC <<
599 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU <<
600 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF <<
601 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU <<
602 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU <<
603 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN <<
604 <<
605 # Files to ignore in find ... statements <<
606 <<
607 export RCS_FIND_IGNORE := \( -name SCCS -o -na <<
608 -name CVS -o -name . <<
609 -prune -o <<
610 <<
611 # ============================================ <<
612 # Rules shared between *config targets and bui <<
613 <<
614 # Basic helpers built in scripts/basic/ <<
615 PHONY += scripts_basic <<
616 scripts_basic: <<
617 $(Q)$(MAKE) $(build)=scripts/basic <<
618 <<
619 PHONY += outputmakefile <<
620 ifdef building_out_of_srctree <<
621 # Before starting out-of-tree build, make sure <<
622 # outputmakefile generates a Makefile in the o <<
623 # separate output directory. This allows conve <<
624 # output directory. <<
625 # At the same time when output Makefile genera <<
626 # ignore whole output directory <<
627 <<
628 quiet_cmd_makefile = GEN Makefile <<
629 cmd_makefile = { \ <<
630 echo "\# Automatically generated by $( <<
631 echo "include $(srctree)/Makefile"; \ <<
632 } > Makefile <<
633 <<
634 outputmakefile: <<
635 @if [ -f $(srctree)/.config -o \ <<
636 -d $(srctree)/include/config <<
637 -d $(srctree)/arch/$(SRCARCH) <<
638 echo >&2 "***"; \ <<
639 echo >&2 "*** The source tree <<
640 echo >&2 "*** in $(abs_srctree <<
641 echo >&2 "***"; \ <<
642 false; \ <<
643 fi <<
644 $(Q)ln -fsn $(srctree) source <<
645 $(call cmd,makefile) <<
646 $(Q)test -e .gitignore || \ <<
647 { echo "# this is build directory, ign <<
648 endif <<
649 <<
650 # The expansion should be delayed until arch/$ <<
651 # Some architectures define CROSS_COMPILE in a <<
652 # CC_VERSION_TEXT is referenced from Kconfig ( <<
653 # and from include/config/auto.conf.cmd to det <<
654 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC <<
655 <<
656 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), <<
657 include $(srctree)/scripts/Makefile.clang <<
658 endif <<
659 <<
660 # Include this also for config targets because <<
661 # cc-cross-prefix to determine CROSS_COMPILE. <<
662 ifdef need-compiler <<
663 include $(srctree)/scripts/Makefile.compiler <<
664 endif <<
665 <<
666 ifdef config-build <<
667 # ============================================ <<
668 # *config targets only - make sure prerequisit <<
669 # in scripts/kconfig to make the *config targe <<
670 <<
671 # Read arch-specific Makefile to set KBUILD_DE <<
672 # KBUILD_DEFCONFIG may point out an alternativ <<
673 # used for 'make defconfig' <<
674 include $(srctree)/arch/$(SRCARCH)/Makefile <<
675 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS <<
676 <<
677 config: outputmakefile scripts_basic FORCE <<
678 $(Q)$(MAKE) $(build)=scripts/kconfig $ <<
679 <<
680 %config: outputmakefile scripts_basic FORCE <<
681 $(Q)$(MAKE) $(build)=scripts/kconfig $ <<
682 <<
683 else #!config-build <<
684 # ============================================ <<
685 # Build targets only - this includes vmlinux, <<
686 # targets and others. In general all targets e <<
687 <<
688 # If building an external module we do not car <<
689 # but instead __all depend on modules <<
690 PHONY += all <<
691 ifeq ($(KBUILD_EXTMOD),) <<
692 __all: all <<
693 else <<
694 __all: modules <<
695 endif <<
696 <<
697 targets := <<
698 <<
699 # Decide whether to build built-in, modular, o <<
700 # Normally, just do built-in. <<
701 <<
702 KBUILD_MODULES := <<
703 KBUILD_BUILTIN := 1 <<
704 <<
705 # If we have only "make modules", don't compil <<
706 ifeq ($(MAKECMDGOALS),modules) <<
707 KBUILD_BUILTIN := <<
708 endif <<
709 <<
710 # If we have "make <whatever> modules", compil <<
711 # in addition to whatever we do anyway. <<
712 # Just "make" or "make all" shall build module <<
713 <<
714 ifneq ($(filter all modules nsdeps %compile_co <<
715 KBUILD_MODULES := 1 <<
716 endif <<
717 <<
718 ifeq ($(MAKECMDGOALS),) <<
719 KBUILD_MODULES := 1 <<
720 endif <<
721 <<
722 export KBUILD_MODULES KBUILD_BUILTIN <<
723 <<
724 ifdef need-config <<
725 include include/config/auto.conf <<
726 endif <<
727 <<
728 ifeq ($(KBUILD_EXTMOD),) <<
729 # Objects we will link into vmlinux / subdirs <<
730 core-y := <<
731 drivers-y := <<
732 libs-y := lib/ <<
733 endif # KBUILD_EXTMOD <<
734 <<
735 # The all: target is the default when no targe <<
736 # command line. <<
737 # This allow a user to issue only 'make' to bu <<
738 # Defaults to vmlinux, but the arch makefile u <<
739 all: vmlinux <<
740 <<
741 CFLAGS_GCOV := -fprofile-arcs -ftest-cover <<
742 ifdef CONFIG_CC_IS_GCC <<
743 CFLAGS_GCOV += -fno-tree-loop-im <<
744 endif <<
745 export CFLAGS_GCOV <<
746 <<
747 # The arch Makefiles can override CC_FLAGS_FTR <<
748 ifdef CONFIG_FUNCTION_TRACER <<
749 CC_FLAGS_FTRACE := -pg <<
750 endif <<
751 <<
752 include $(srctree)/arch/$(SRCARCH)/Makefile <<
753 <<
754 ifdef need-config <<
755 ifdef may-sync-config <<
756 # Read in dependencies to all Kconfig* files, <<
757 # changes are detected. This should be include <<
758 # because some architectures define CROSS_COMP <<
759 include include/config/auto.conf.cmd <<
760 <<
761 $(KCONFIG_CONFIG): <<
762 @echo >&2 '***' <<
763 @echo >&2 '*** Configuration file "$@" <<
764 @echo >&2 '***' <<
765 @echo >&2 '*** Please run some configu <<
766 @echo >&2 '*** "make menuconfig" or "m <<
767 @echo >&2 '***' <<
768 @/bin/false <<
769 <<
770 # The actual configuration files used during t <<
771 # include/generated/ and include/config/. Upda <<
772 # include/config/auto.conf (which mirrors .con <<
773 # <<
774 # This exploits the 'multi-target pattern rule <<
775 # The syncconfig should be executed only once <<
776 # (Note: use the grouped target '&:' when we b <<
777 # <<
778 # Do not use $(call cmd,...) here. That would <<
779 # so you cannot notice that Kconfig is waiting <<
780 %/config/auto.conf %/config/auto.conf.cmd %/ge <<
781 $(Q)$(kecho) " SYNC $@" <<
782 $(Q)$(MAKE) -f $(srctree)/Makefile syn <<
783 else # !may-sync-config <<
784 # External modules and some install targets ne <<
785 # and include/config/auto.conf but do not care <<
786 # Use auto.conf to trigger the test <<
787 PHONY += include/config/auto.conf <<
788 <<
789 include/config/auto.conf: <<
790 @test -e include/generated/autoconf.h <<
791 echo >&2; <<
792 echo >&2 " ERROR: Kernel configuratio <<
793 echo >&2 " include/generated/a <<
794 echo >&2 " Run 'make oldconfig <<
795 echo >&2 ; <<
796 /bin/false) <<
797 <<
798 endif # may-sync-config <<
799 endif # need-config <<
800 <<
801 KBUILD_CFLAGS += -fno-delete-null-pointer-ch <<
802 <<
803 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE <<
804 KBUILD_CFLAGS += -O2 <<
805 KBUILD_RUSTFLAGS += -Copt-level=2 <<
806 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE <<
807 KBUILD_CFLAGS += -Os <<
808 KBUILD_RUSTFLAGS += -Copt-level=s <<
809 endif <<
810 <<
811 # Always set `debug-assertions` and `overflow- <<
812 # depends on `opt-level` and `debug-assertions <<
813 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( <<
814 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C <<
815 <<
816 # Tell gcc to never replace conditional load w <<
817 ifdef CONFIG_CC_IS_GCC <<
818 # gcc-10 renamed --param=allow-store-data-race <<
819 # -fno-allow-store-data-races. <<
820 KBUILD_CFLAGS += $(call cc-option,--param=al <<
821 KBUILD_CFLAGS += $(call cc-option,-fno-allow <<
822 endif <<
823 <<
824 ifdef CONFIG_READABLE_ASM <<
825 # Disable optimizations that make assembler li <<
826 # reorder blocks reorders the control in the f <<
827 # ipa clone creates specialized cloned functio <<
828 # partial inlining inlines only parts of funct <<
829 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- <<
830 endif <<
831 <<
832 stackp-flags-y <<
833 stackp-flags-$(CONFIG_STACKPROTECTOR) <<
834 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) <<
835 <<
836 KBUILD_CFLAGS += $(stackp-flags-y) <<
837 <<
838 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning <<
839 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) <<
840 <<
841 ifdef CONFIG_FRAME_POINTER <<
842 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn <<
843 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y <<
844 else <<
845 # Some targets (ARM with Thumb2, for example), <<
846 # pointers. For those, we don't have FUNCTION <<
847 # select FRAME_POINTER. However, FUNCTION_TRA <<
848 # incompatible with -fomit-frame-pointer with <<
849 # -fomit-frame-pointer with FUNCTION_TRACER. <<
850 # In the Rust target specification, "frame-poi <<
851 # to "may-omit". <<
852 ifndef CONFIG_FUNCTION_TRACER <<
853 KBUILD_CFLAGS += -fomit-frame-pointer <<
854 endif <<
855 endif <<
856 <<
857 # Initialize all stack variables with a 0xAA p <<
858 ifdef CONFIG_INIT_STACK_ALL_PATTERN <<
859 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat <<
860 endif <<
861 <<
862 # Initialize all stack variables with a zero v <<
863 ifdef CONFIG_INIT_STACK_ALL_ZERO <<
864 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer <<
865 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER <<
866 # https://github.com/llvm/llvm-project/issues/ <<
867 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi <<
868 export CC_AUTO_VAR_INIT_ZERO_ENABLER <<
869 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA <<
870 endif <<
871 endif <<
872 <<
873 # While VLAs have been removed, GCC produces u <<
874 # for the randomize_kstack_offset feature. Dis <<
875 KBUILD_CFLAGS += $(call cc-option, -fno-stac <<
876 <<
877 # Clear used registers at func exit (to reduce <<
878 ifdef CONFIG_ZERO_CALL_USED_REGS <<
879 KBUILD_CFLAGS += -fzero-call-used-regs=used- <<
880 endif <<
881 <<
882 ifdef CONFIG_FUNCTION_TRACER <<
883 ifdef CONFIG_FTRACE_MCOUNT_USE_CC <<
884 CC_FLAGS_FTRACE += -mrecord-mcount <<
885 ifdef CONFIG_HAVE_NOP_MCOUNT <<
886 ifeq ($(call cc-option-yn, -mnop-mcount),y <<
887 CC_FLAGS_FTRACE += -mnop-mcount <<
888 CC_FLAGS_USING += -DCC_USING_NOP_MCOU <<
889 endif <<
890 endif <<
891 endif <<
892 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL <<
893 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT <<
894 CC_FLAGS_USING += -DCC_USING_NOP_MCOU <<
895 endif <<
896 endif <<
897 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT <<
898 ifdef CONFIG_HAVE_C_RECORDMCOUNT <<
899 BUILD_C_RECORDMCOUNT := y <<
900 export BUILD_C_RECORDMCOUNT <<
901 endif <<
902 endif <<
903 ifdef CONFIG_HAVE_FENTRY <<
904 # s390-linux-gnu-gcc did not support -mfentr <<
905 ifeq ($(call cc-option-yn, -mfentry),y) <<
906 CC_FLAGS_FTRACE += -mfentry <<
907 CC_FLAGS_USING += -DCC_USING_FENTRY <<
908 endif <<
909 endif <<
910 export CC_FLAGS_FTRACE <<
911 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA <<
912 KBUILD_AFLAGS += $(CC_FLAGS_USING) <<
913 endif <<
914 <<
915 # We trigger additional mismatches with less i <<
916 ifdef CONFIG_DEBUG_SECTION_MISMATCH <<
917 KBUILD_CFLAGS += -fno-inline-functions-called- <<
918 endif <<
919 <<
920 # `rustc`'s `-Zfunction-sections` applies to d <<
921 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION <<
922 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f <<
923 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections <<
924 LDFLAGS_vmlinux += --gc-sections <<
925 endif <<
926 <<
927 ifdef CONFIG_SHADOW_CALL_STACK <<
928 ifndef CONFIG_DYNAMIC_SCS <<
929 CC_FLAGS_SCS := -fsanitize=shadow-call-stac <<
930 KBUILD_CFLAGS += $(CC_FLAGS_SCS) <<
931 endif <<
932 export CC_FLAGS_SCS <<
933 endif <<
934 <<
935 ifdef CONFIG_LTO_CLANG <<
936 ifdef CONFIG_LTO_CLANG_THIN <<
937 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit <<
938 else <<
939 CC_FLAGS_LTO := -flto <<
940 endif <<
941 CC_FLAGS_LTO += -fvisibility=hidden <<
942 <<
943 # Limit inlining across translation units to r <<
944 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 <<
945 endif <<
946 <<
947 ifdef CONFIG_LTO <<
948 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) <<
949 KBUILD_AFLAGS += -fno-lto <<
950 export CC_FLAGS_LTO <<
951 endif <<
952 <<
953 ifdef CONFIG_CFI_CLANG <<
954 CC_FLAGS_CFI := -fsanitize=kcfi <<
955 KBUILD_CFLAGS += $(CC_FLAGS_CFI) <<
956 export CC_FLAGS_CFI <<
957 endif <<
958 <<
959 # Architectures can define flags to add/remove <<
960 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN <<
961 export CC_FLAGS_FPU <<
962 export CC_FLAGS_NO_FPU <<
963 <<
964 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) <<
965 # Set the minimal function alignment. Use the <<
966 # -fmin-function-alignment if it is available, <<
967 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME <<
968 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT <<
969 KBUILD_CFLAGS += -fmin-function-alignment=$(CO <<
970 else <<
971 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU <<
972 endif <<
973 endif <<
974 <<
975 # arch Makefile may override CC so keep this a <<
976 NOSTDINC_FLAGS += -nostdinc <<
977 <<
978 # To gain proper coverage for CONFIG_UBSAN_BOU <<
979 # the kernel uses only C99 flexible arrays for <<
980 # arrays. Enforce this for everything that may <<
981 # perform bounds checking. <<
982 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl <<
983 <<
984 #Currently, disable -Wstringop-overflow for GC <<
985 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW <<
986 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + <<
987 <<
988 # disable invalid "can't wrap" optimizations f <<
989 KBUILD_CFLAGS += -fno-strict-overflow <<
990 <<
991 # Make sure -fstack-check isn't enabled (like <<
992 KBUILD_CFLAGS += -fno-stack-check <<
993 <<
994 # conserve stack if available <<
995 ifdef CONFIG_CC_IS_GCC <<
996 KBUILD_CFLAGS += -fconserve-stack <<
997 endif <<
998 <<
999 # change __FILE__ to the relative path from th <<
1000 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p <<
1001 <<
1002 # include additional Makefiles when needed <<
1003 include-y := scripts/Ma <<
1004 include-$(CONFIG_DEBUG_INFO) += scripts/Ma <<
1005 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma <<
1006 include-$(CONFIG_KASAN) += scripts/Ma <<
1007 include-$(CONFIG_KCSAN) += scripts/Ma <<
1008 include-$(CONFIG_KMSAN) += scripts/Ma <<
1009 include-$(CONFIG_UBSAN) += scripts/Ma <<
1010 include-$(CONFIG_KCOV) += scripts/Ma <<
1011 include-$(CONFIG_RANDSTRUCT) += scripts/Ma <<
1012 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma <<
1013 <<
1014 include $(addprefix $(srctree)/, $(include-y) <<
1015 <<
1016 # scripts/Makefile.gcc-plugins is intentional <<
1017 # Do not add $(call cc-option,...) below this <<
1018 # from the clean source tree, the GCC plugins <<
1019 <<
1020 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS <<
1021 KBUILD_CPPFLAGS += $(KCPPFLAGS) <<
1022 KBUILD_AFLAGS += $(KAFLAGS) <<
1023 KBUILD_CFLAGS += $(KCFLAGS) <<
1024 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) <<
1025 <<
1026 KBUILD_LDFLAGS_MODULE += --build-id=sha1 <<
1027 LDFLAGS_vmlinux += --build-id=sha1 <<
1028 <<
1029 KBUILD_LDFLAGS += -z noexecstack <<
1030 ifeq ($(CONFIG_LD_IS_BFD),y) <<
1031 KBUILD_LDFLAGS += $(call ld-option,--no-warn <<
1032 endif <<
1033 <<
1034 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) <<
1035 LDFLAGS_vmlinux += -X <<
1036 endif <<
1037 <<
1038 ifeq ($(CONFIG_RELR),y) <<
1039 # ld.lld before 15 did not support -z pack-re <<
1040 LDFLAGS_vmlinux += $(call ld-option,--pack-dy <<
1041 endif <<
1042 <<
1043 # We never want expected sections to be place <<
1044 # linker. All sections should be explicitly n <<
1045 ifdef CONFIG_LD_ORPHAN_WARN <<
1046 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG <<
1047 endif <<
1048 <<
1049 # Align the bit size of userspace programs wi <<
1050 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta <<
1051 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta <<
1052 <<
1053 # make the checker run with the right archite <<
1054 CHECKFLAGS += --arch=$(ARCH) <<
1055 <<
1056 # insure the checker run with the right endia <<
1057 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- <<
1058 <<
1059 # the checker needs the correct machine size <<
1060 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) <<
1061 <<
1062 # Default kernel image to build when no speci <<
1063 # KBUILD_IMAGE may be overruled on the comman <<
1064 # set in the environment <<
1065 # Also any assignments in arch/$(ARCH)/Makefi <<
1066 # this default value <<
1067 export KBUILD_IMAGE ?= vmlinux <<
1068 <<
1069 # <<
1070 # INSTALL_PATH specifies where to place the u <<
1071 # images. Default is /boot, but you can set i <<
1072 export INSTALL_PATH ?= /boot <<
1073 <<
1074 # <<
1075 # INSTALL_DTBS_PATH specifies a prefix for re <<
1076 # Like INSTALL_MOD_PATH, it isn't defined in <<
1077 # an argument if needed. Otherwise it default <<
1078 # <<
1079 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d <<
1080 <<
1081 # <<
1082 # INSTALL_MOD_PATH specifies a prefix to MODL <<
1083 # relocations required by build roots. This <<
1084 # makefile but the argument can be passed to <<
1085 # <<
1086 <<
1087 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K <<
1088 export MODLIB <<
1089 <<
1090 PHONY += prepare0 <<
1091 <<
1092 export extmod_prefix = $(if $(KBUILD_EXTMOD), <<
1093 export MODORDER := $(extmod_prefix)modules.or <<
1094 export MODULES_NSDEPS := $(extmod_prefix)modu <<
1095 <<
1096 ifeq ($(KBUILD_EXTMOD),) <<
1097 <<
1098 build-dir := . <<
1099 clean-dirs := $(sort . Documentation \ <<
1100 $(patsubst %/,%,$(filter <<
1101 $(drivers-) $(libs-)) <<
1102 <<
1103 export ARCH_CORE := $(core-y) <<
1104 export ARCH_LIB := $(filter %/, $(lib <<
1105 export ARCH_DRIVERS := $(drivers-y) $(dri <<
1106 # Externally visible symbols (used by link-vm <<
1107 <<
1108 KBUILD_VMLINUX_OBJS := ./built-in.a <<
1109 ifdef CONFIG_MODULES <<
1110 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a <<
1111 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib <<
1112 else <<
1113 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, <<
1114 endif <<
1115 <<
1116 export KBUILD_VMLINUX_LIBS <<
1117 export KBUILD_LDS := arch/$(SRCARCH) <<
1118 <<
1119 ifdef CONFIG_TRIM_UNUSED_KSYMS <<
1120 # For the kernel to actually contain only the <<
1121 # we have to build modules as well to determi <<
1122 KBUILD_MODULES := 1 <<
1123 endif <<
1124 <<
1125 # '$(AR) mPi' needs 'T' to workaround the bug <<
1126 quiet_cmd_ar_vmlinux.a = AR $@ <<
1127 cmd_ar_vmlinux.a = \ <<
1128 rm -f $@; \ <<
1129 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS <<
1130 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) <<
1131 <<
1132 targets += vmlinux.a <<
1133 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea <<
1134 $(call if_changed,ar_vmlinux.a) <<
1135 <<
1136 PHONY += vmlinux_o <<
1137 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) <<
1138 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1139 <<
1140 vmlinux.o modules.builtin.modinfo modules.bui <<
1141 @: <<
1142 <<
1143 PHONY += vmlinux <<
1144 # LDFLAGS_vmlinux in the top Makefile defines <<
1145 # not for decompressors. LDFLAGS_vmlinux in a <<
1146 # unrelated; the decompressors just happen to <<
1147 # arch/*/boot/compressed/vmlinux. <<
1148 # Export LDFLAGS_vmlinux only to scripts/Make <<
1149 # <<
1150 # _LDFLAGS_vmlinux is a workaround for the 'p <<
1151 # https://savannah.gnu.org/bugs/?61463 <<
1152 # For Make > 4.4, the following simple code w <<
1153 # vmlinux: private export LDFLAGS_vmlinux := <<
1154 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG <<
1155 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ <<
1156 vmlinux: vmlinux.o $(KBUILD_LDS) modpost <<
1157 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1158 <<
1159 # The actual objects are generated when desce <<
1160 # make sure no implicit rule kicks in <<
1161 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ <<
1162 <<
1163 ifeq ($(origin KERNELRELEASE),file) <<
1164 filechk_kernel.release = $(srctree)/scripts/s <<
1165 else <<
1166 filechk_kernel.release = echo $(KERNELRELEASE <<
1167 endif <<
1168 <<
1169 # Store (new) KERNELRELEASE string in include <<
1170 include/config/kernel.release: FORCE <<
1171 $(call filechk,kernel.release) <<
1172 <<
1173 # Additional helpers built in scripts/ <<
1174 # Carefully list dependencies so we do not tr <<
1175 # in parallel <<
1176 PHONY += scripts <<
1177 scripts: scripts_basic scripts_dtc <<
1178 $(Q)$(MAKE) $(build)=$(@) <<
1179 <<
1180 # Things we need to do before we recursively <<
1181 # or the modules are listed in "prepare". <<
1182 # A multi level approach is used. prepareN is <<
1183 # archprepare is used in arch Makefiles and w <<
1184 # version.h and scripts_basic is processed / <<
1185 <<
1186 PHONY += prepare archprepare <<
1187 <<
1188 archprepare: outputmakefile archheaders archs <<
1189 asm-generic $(version_h) include/gene <<
1190 include/generated/compile.h include/g <<
1191 <<
1192 prepare0: archprepare <<
1193 $(Q)$(MAKE) $(build)=scripts/mod <<
1194 $(Q)$(MAKE) $(build)=. prepare <<
1195 <<
1196 # All the preparing.. <<
1197 prepare: prepare0 <<
1198 ifdef CONFIG_RUST <<
1199 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip <<
1200 $(Q)$(MAKE) $(build)=rust <<
1201 endif <<
1202 <<
1203 PHONY += remove-stale-files <<
1204 remove-stale-files: <<
1205 $(Q)$(srctree)/scripts/remove-stale-f <<
1206 <<
1207 # Support for using generic headers in asm-ge <<
1208 asm-generic := -f $(srctree)/scripts/Makefile <<
1209 <<
1210 PHONY += asm-generic uapi-asm-generic <<
1211 asm-generic: uapi-asm-generic <<
1212 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC <<
1213 generic=include/asm-generic <<
1214 uapi-asm-generic: <<
1215 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC <<
1216 generic=include/uapi/asm-generic <<
1217 <<
1218 # Generate some files <<
1219 # ------------------------------------------- <<
1220 <<
1221 # KERNELRELEASE can change from a few differe <<
1222 # needs to be updated, so this check is force <<
1223 <<
1224 uts_len := 64 <<
1225 define filechk_utsrelease.h <<
1226 if [ `echo -n "$(KERNELRELEASE)" | wc <<
1227 echo '"$(KERNELRELEASE)" exceeds $( <<
1228 exit 1; <<
1229 fi; <<
1230 echo \#define UTS_RELEASE \"$(KERNELR <<
1231 endef <<
1232 <<
1233 define filechk_version.h <<
1234 if [ $(SUBLEVEL) -gt 255 ]; then <<
1235 echo \#define LINUX_VERSION_C <<
1236 expr $(VERSION) \* 65536 + $( <<
1237 else <<
1238 echo \#define LINUX_VERSION_C <<
1239 expr $(VERSION) \* 65536 + $( <<
1240 fi; <<
1241 echo '#define KERNEL_VERSION(a,b,c) ( <<
1242 ((c) > 255 ? 255 : (c)))'; <<
1243 echo \#define LINUX_VERSION_MAJOR $(V <<
1244 echo \#define LINUX_VERSION_PATCHLEVE <<
1245 echo \#define LINUX_VERSION_SUBLEVEL <<
1246 endef <<
1247 <<
1248 $(version_h): private PATCHLEVEL := $(or $(PA <<
1249 $(version_h): private SUBLEVEL := $(or $(SUBL <<
1250 $(version_h): FORCE <<
1251 $(call filechk,version.h) <<
1252 <<
1253 include/generated/utsrelease.h: include/confi <<
1254 $(call filechk,utsrelease.h) <<
1255 <<
1256 filechk_compile.h = $(srctree)/scripts/mkcomp <<
1257 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION <<
1258 <<
1259 include/generated/compile.h: FORCE <<
1260 $(call filechk,compile.h) <<
1261 <<
1262 PHONY += headerdep <<
1263 headerdep: <<
1264 $(Q)find $(srctree)/include/ -name '* <<
1265 $(srctree)/scripts/headerdep.pl -I$(s <<
1266 <<
1267 # ------------------------------------------- <<
1268 # Kernel headers <<
1269 <<
1270 #Default location for installed headers <<
1271 export INSTALL_HDR_PATH = $(objtree)/usr <<
1272 <<
1273 quiet_cmd_headers_install = INSTALL $(INSTALL <<
1274 cmd_headers_install = \ <<
1275 mkdir -p $(INSTALL_HDR_PATH); \ <<
1276 rsync -mrl --include='*/' --include=' <<
1277 usr/include $(INSTALL_HDR_PATH) <<
1278 <<
1279 PHONY += headers_install <<
1280 headers_install: headers <<
1281 $(call cmd,headers_install) <<
1282 <<
1283 PHONY += archheaders archscripts <<
1284 <<
1285 hdr-inst := -f $(srctree)/scripts/Makefile.he <<
1286 <<
1287 PHONY += headers <<
1288 headers: $(version_h) scripts_unifdef uapi-as <<
1289 $(if $(filter um, $(SRCARCH)), $(erro <<
1290 $(Q)$(MAKE) $(hdr-inst)=include/uapi <<
1291 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC <<
1292 <<
1293 ifdef CONFIG_HEADERS_INSTALL <<
1294 prepare: headers <<
1295 endif <<
1296 <<
1297 PHONY += scripts_unifdef <<
1298 scripts_unifdef: scripts_basic <<
1299 $(Q)$(MAKE) $(build)=scripts scripts/ <<
1300 <<
1301 # ------------------------------------------- <<
1302 # Install <<
1303 <<
1304 # Many distributions have the custom install <<
1305 # If DKMS is installed, 'make install' will e <<
1306 # to this Makefile to build and install exter <<
1307 # Cancel sub_make_done so that options such a <<
1308 <<
1309 quiet_cmd_install = INSTALL $(INSTALL_PATH) <<
1310 cmd_install = unset sub_make_done; $(sr <<
1311 <<
1312 # ------------------------------------------- <<
1313 # vDSO install <<
1314 <<
1315 PHONY += vdso_install <<
1316 vdso_install: export INSTALL_FILES = $(vdso-i <<
1317 vdso_install: <<
1318 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1319 <<
1320 # ------------------------------------------- <<
1321 # Tools <<
1322 <<
1323 ifdef CONFIG_OBJTOOL <<
1324 prepare: tools/objtool <<
1325 endif <<
1326 <<
1327 ifdef CONFIG_BPF <<
1328 ifdef CONFIG_DEBUG_INFO_BTF <<
1329 prepare: tools/bpf/resolve_btfids <<
1330 endif <<
1331 endif <<
1332 <<
1333 # The tools build system is not a part of Kbu <<
1334 # its own unique issues. If you need to integ <<
1335 # please consider locating that tool outside <<
1336 # standard Kbuild "hostprogs" syntax instead <<
1337 # here. See Documentation/kbuild/makefiles.rs <<
1338 <<
1339 PHONY += resolve_btfids_clean <<
1340 <<
1341 resolve_btfids_O = $(abspath $(objtree))/tool <<
1342 <<
1343 # tools/bpf/resolve_btfids directory might no <<
1344 # in output directory, skip its clean in that <<
1345 resolve_btfids_clean: <<
1346 ifneq ($(wildcard $(resolve_btfids_O)),) <<
1347 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ <<
1348 endif <<
1349 <<
1350 # Clear a bunch of variables before executing <<
1351 ifeq ($(quiet),silent_) <<
1352 tools_silent=s <<
1353 endif <<
1354 <<
1355 tools/: FORCE <<
1356 $(Q)mkdir -p $(objtree)/tools <<
1357 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too <<
1358 <<
1359 tools/%: FORCE <<
1360 $(Q)mkdir -p $(objtree)/tools <<
1361 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too <<
1362 <<
1363 # ------------------------------------------- <<
1364 # Kernel selftest <<
1365 <<
1366 PHONY += kselftest <<
1367 kselftest: headers <<
1368 $(Q)$(MAKE) -C $(srctree)/tools/testi <<
1369 <<
1370 kselftest-%: headers FORCE <<
1371 $(Q)$(MAKE) -C $(srctree)/tools/testi <<
1372 <<
1373 PHONY += kselftest-merge <<
1374 kselftest-merge: <<
1375 $(if $(wildcard $(objtree)/.config),, <<
1376 $(Q)find $(srctree)/tools/testing/sel <<
1377 xargs $(srctree)/scripts/kcon <<
1378 $(Q)$(MAKE) -f $(srctree)/Makefile ol <<
1379 <<
1380 # ------------------------------------------- <<
1381 # Devicetree files <<
1382 <<
1383 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ <<
1384 dtstree := arch/$(SRCARCH)/boot/dts <<
1385 endif <<
1386 <<
1387 ifneq ($(dtstree),) <<
1388 <<
1389 %.dtb: dtbs_prepare <<
1390 $(Q)$(MAKE) $(build)=$(dtstree) $(dts <<
1391 <<
1392 %.dtbo: dtbs_prepare <<
1393 $(Q)$(MAKE) $(build)=$(dtstree) $(dts <<
1394 <<
1395 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ <<
1396 dtbs: dtbs_prepare <<
1397 $(Q)$(MAKE) $(build)=$(dtstree) need- <<
1398 <<
1399 # include/config/kernel.release is actually n <<
1400 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) <<
1401 # dtbs_install depend on it as dtbs_install m <<
1402 dtbs_prepare: include/config/kernel.release s <<
1403 <<
1404 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), <<
1405 export CHECK_DTBS=y <<
1406 endif <<
1407 <<
1408 ifneq ($(CHECK_DTBS),) <<
1409 dtbs_prepare: dt_binding_schemas <<
1410 endif <<
1411 <<
1412 dtbs_check: dtbs <<
1413 <<
1414 dtbs_install: <<
1415 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1416 <<
1417 ifdef CONFIG_OF_EARLY_FLATTREE <<
1418 all: dtbs <<
1419 endif <<
1420 <<
1421 endif <<
1422 <<
1423 PHONY += scripts_dtc <<
1424 scripts_dtc: scripts_basic <<
1425 $(Q)$(MAKE) $(build)=scripts/dtc <<
1426 <<
1427 ifneq ($(filter dt_binding_check, $(MAKECMDGO <<
1428 export CHECK_DTBS=y <<
1429 endif <<
1430 <<
1431 PHONY += dt_binding_check dt_binding_schemas <<
1432 dt_binding_check: dt_binding_schemas scripts_ <<
1433 $(Q)$(MAKE) $(build)=Documentation/de <<
1434 <<
1435 dt_binding_schemas: <<
1436 $(Q)$(MAKE) $(build)=Documentation/de <<
1437 <<
1438 PHONY += dt_compatible_check <<
1439 dt_compatible_check: dt_binding_schemas <<
1440 $(Q)$(MAKE) $(build)=Documentation/de <<
1441 <<
1442 # ------------------------------------------- <<
1443 # Modules <<
1444 <<
1445 ifdef CONFIG_MODULES <<
1446 <<
1447 # By default, build modules as well <<
1448 <<
1449 all: modules <<
1450 <<
1451 # When we're building modules with modversion <<
1452 # the built-in objects during the descend as <<
1453 # make sure the checksums are up to date befo <<
1454 ifdef CONFIG_MODVERSIONS <<
1455 KBUILD_BUILTIN := 1 <<
1456 endif <<
1457 <<
1458 # Build modules <<
1459 # <<
1460 <<
1461 # *.ko are usually independent of vmlinux, bu <<
1462 # is an exception. <<
1463 ifdef CONFIG_DEBUG_INFO_BTF_MODULES <<
1464 KBUILD_BUILTIN := 1 <<
1465 modules: vmlinux <<
1466 endif <<
1467 <<
1468 modules: modules_prepare <<
1469 <<
1470 # Target to prepare building external modules <<
1471 modules_prepare: prepare <<
1472 $(Q)$(MAKE) $(build)=scripts scripts/ <<
1473 <<
1474 endif # CONFIG_MODULES <<
1475 <<
1476 ### <<
1477 # Cleaning is done on three levels. <<
1478 # make clean Delete most generated files <<
1479 # Leave enough to build extern <<
1480 # make mrproper Delete the current configura <<
1481 # make distclean Remove editor backup files, <<
1482 <<
1483 # Directories & files removed with 'make clea <<
1484 CLEAN_FILES += vmlinux.symvers modules-only.s <<
1485 modules.builtin modules.builti <<
1486 compile_commands.json rust/tes <<
1487 rust-project.json .vmlinux.obj <<
1488 <<
1489 # Directories & files removed with 'make mrpr <<
1490 MRPROPER_FILES += include/config include/gene <<
1491 arch/$(SRCARCH)/include/gen <<
1492 debian snap tar-install PKG <<
1493 .config .config.old .versio <<
1494 Module.symvers \ <<
1495 certs/signing_key.pem \ <<
1496 certs/x509.genkey \ <<
1497 vmlinux-gdb.py \ <<
1498 rpmbuild \ <<
1499 rust/libmacros.so <<
1500 <<
1501 # clean - Delete most, but leave enough to bu <<
1502 # <<
1503 clean: private rm-files := $(CLEAN_FILES) <<
1504 <<
1505 PHONY += archclean vmlinuxclean <<
1506 <<
1507 vmlinuxclean: <<
1508 $(Q)$(CONFIG_SHELL) $(srctree)/script <<
1509 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f <<
1510 <<
1511 clean: archclean vmlinuxclean resolve_btfids_ <<
1512 <<
1513 # mrproper - Delete all generated files, incl <<
1514 # <<
1515 mrproper: private rm-files := $(MRPROPER_FILE <<
1516 mrproper-dirs := $(addprefix _mrproper_, <<
1517 <<
1518 PHONY += $(mrproper-dirs) mrproper <<
1519 $(mrproper-dirs): <<
1520 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr <<
1521 <<
1522 mrproper: clean $(mrproper-dirs) <<
1523 $(call cmd,rmfiles) <<
1524 @find . $(RCS_FIND_IGNORE) \ <<
1525 \( -name '*.rmeta' \) \ <<
1526 -type f -print | xargs rm -f <<
1527 <<
1528 # distclean <<
1529 # <<
1530 PHONY += distclean <<
1531 <<
1532 distclean: mrproper <<
1533 @find . $(RCS_FIND_IGNORE) \ <<
1534 \( -name '*.orig' -o -name '* <<
1535 -o -name '*.bak' -o -name '#* <<
1536 -o -name 'core' -o -name tags <<
1537 -o -name GPATH -o -name GRTAG <<
1538 -type f -print | xargs rm -f <<
1539 <<
1540 <<
1541 # Packaging of the kernel to various formats <<
1542 # ------------------------------------------- <<
1543 <<
1544 %src-pkg: FORCE <<
1545 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1546 %pkg: include/config/kernel.release FORCE <<
1547 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1548 <<
1549 # Brief documentation of the typical targets <<
1550 # ------------------------------------------- <<
1551 <<
1552 boards := $(wildcard $(srctree)/arch/$(SRCARC <<
1553 boards := $(sort $(notdir $(boards))) <<
1554 board-dirs := $(dir $(wildcard $(srctree)/arc <<
1555 board-dirs := $(sort $(notdir $(board-dirs:/= <<
1556 <<
1557 PHONY += help <<
1558 help: <<
1559 @echo 'Cleaning targets:' <<
1560 @echo ' clean - Remove mo <<
1561 @echo ' enough bu <<
1562 @echo ' mrproper - Remove al <<
1563 @echo ' distclean - mrproper <<
1564 @echo '' <<
1565 @$(MAKE) -f $(srctree)/scripts/kconfi <<
1566 @echo '' <<
1567 @echo 'Other generic targets:' <<
1568 @echo ' all - Build all <<
1569 @echo '* vmlinux - Build the <<
1570 @echo '* modules - Build all <<
1571 @echo ' modules_install - Install a <<
1572 @echo ' vdso_install - Install u <<
1573 @echo ' dir/ - Build all <<
1574 @echo ' dir/file.[ois] - Build spe <<
1575 @echo ' dir/file.ll - Build the <<
1576 @echo ' (requires <<
1577 @echo ' dir/file.lst - Build spe <<
1578 @echo ' (requires <<
1579 @echo ' dir/file.ko - Build mod <<
1580 @echo ' modules_prepare - Set up fo <<
1581 @echo ' tags/TAGS - Generate <<
1582 @echo ' cscope - Generate <<
1583 @echo ' gtags - Generate <<
1584 @echo ' kernelrelease - Output th <<
1585 @echo ' kernelversion - Output th <<
1586 @echo ' image_name - Output th <<
1587 @echo ' headers_install - Install s <<
1588 echo ' (default: <<
1589 echo '' <<
1590 @echo 'Static analysers:' <<
1591 @echo ' checkstack - Generate <<
1592 @echo ' with a st <<
1593 @echo ' versioncheck - Sanity ch <<
1594 @echo ' includecheck - Check for <<
1595 @echo ' export_report - List the <<
1596 @echo ' headerdep - Detect in <<
1597 @echo ' coccicheck - Check wit <<
1598 @echo ' clang-analyzer - Check wit <<
1599 @echo ' clang-tidy - Check wit <<
1600 @echo '' <<
1601 @echo 'Tools:' <<
1602 @echo ' nsdeps - Generate <<
1603 @echo '' <<
1604 @echo 'Kernel selftest:' <<
1605 @echo ' kselftest - Build a <<
1606 @echo ' Build, <<
1607 @echo ' running <<
1608 @echo ' Run as <<
1609 @echo ' kselftest-all - Build k <<
1610 @echo ' kselftest-install - Build a <<
1611 @echo ' kselftest-clean - Remove <<
1612 @echo ' kselftest-merge - Merge a <<
1613 @echo ' kselfte <<
1614 @echo '' <<
1615 @echo 'Rust targets:' <<
1616 @echo ' rustavailable - Checks wh <<
1617 @echo ' available <<
1618 @echo ' rustfmt - Reformat <<
1619 @echo ' rustfmtcheck - Checks if <<
1620 @echo ' is format <<
1621 @echo ' rustdoc - Generate <<
1622 @echo ' (requires <<
1623 @echo ' rusttest - Runs the <<
1624 @echo ' (requires <<
1625 @echo ' rust-analyzer - Generate <<
1626 @echo ' (requires <<
1627 @echo ' dir/file.[os] - Build spe <<
1628 @echo ' dir/file.rsi - Build mac <<
1629 @echo ' Run with <<
1630 @echo ' The outpu <<
1631 @echo ' dir/file.ll - Build the <<
1632 @echo '' <<
1633 @$(if $(dtstree), \ <<
1634 echo 'Devicetree:'; \ <<
1635 echo '* dtbs - <<
1636 echo ' dtbs_install - <<
1637 echo ' dt_binding_check - <<
1638 echo ' dt_binding_schema - <<
1639 echo ' dtbs_check - <<
1640 echo '') <<
1641 <<
1642 @echo 'Userspace tools targets:' <<
1643 @echo ' use "make tools/help"' <<
1644 @echo ' or "cd tools; make help"' <<
1645 @echo '' <<
1646 @echo 'Kernel packaging:' <<
1647 @$(MAKE) -f $(srctree)/scripts/Makefi <<
1648 @echo '' <<
1649 @echo 'Documentation targets:' <<
1650 @$(MAKE) -f $(srctree)/Documentation/ <<
1651 @echo '' <<
1652 @echo 'Architecture-specific targets <<
1653 @$(or $(archhelp),\ <<
1654 echo ' No architecture-speci <<
1655 @echo '' <<
1656 @$(if $(boards), \ <<
1657 $(foreach b, $(boards), \ <<
1658 printf " %-27s - Build for % <<
1659 echo '') <<
1660 @$(if $(board-dirs), \ <<
1661 $(foreach b, $(board-dirs), \ <<
1662 printf " %-16s - Show %s-spe <<
1663 printf " %-16s - Show all of <<
1664 echo '') <<
1665 <<
1666 @echo ' make V=n [targets] 1: ver <<
1667 @echo ' 2: giv <<
1668 @echo ' V=1 an <<
1669 @echo ' make O=dir [targets] Locate <<
1670 @echo ' make C=1 [targets] Check <<
1671 @echo ' (spars <<
1672 @echo ' make C=2 [targets] Force <<
1673 @echo ' make RECORDMCOUNT_WARN=1 [t <<
1674 @echo ' make W=n [targets] Enable <<
1675 @echo ' 1: warnings w <<
1676 @echo ' 2: warnings w <<
1677 @echo ' 3: more obscu <<
1678 @echo ' c: extra chec <<
1679 @echo ' e: warnings a <<
1680 @echo ' Multiple leve <<
1681 @$(if $(dtstree), \ <<
1682 echo ' make CHECK_DTBS=1 [ta <<
1683 echo ' This can be ap <<
1684 ) <<
1685 @echo '' <<
1686 @echo 'Execute "make" or "make all" <<
1687 @echo 'For further info see the ./RE <<
1688 <<
1689 <<
1690 help-board-dirs := $(addprefix help-,$(board- <<
1691 <<
1692 help-boards: $(help-board-dirs) <<
1693 <<
1694 boards-per-dir = $(sort $(notdir $(wildcard $ <<
1695 <<
1696 $(help-board-dirs): help-%: <<
1697 @echo 'Architecture-specific targets <<
1698 @$(if $(boards-per-dir), \ <<
1699 $(foreach b, $(boards-per-dir <<
1700 printf " %-24s - Build for % <<
1701 echo '') <<
1702 <<
1703 <<
1704 # Documentation targets <<
1705 # ------------------------------------------- <<
1706 DOC_TARGETS := xmldocs latexdocs pdfdocs html <<
1707 linkcheckdocs dochelp refcheck <<
1708 PHONY += $(DOC_TARGETS) <<
1709 $(DOC_TARGETS): <<
1710 $(Q)$(MAKE) $(build)=Documentation $@ <<
1711 <<
1712 <<
1713 # Rust targets <<
1714 # ------------------------------------------- <<
1715 <<
1716 # "Is Rust available?" target <<
1717 PHONY += rustavailable <<
1718 rustavailable: <<
1719 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip <<
1720 <<
1721 # Documentation target <<
1722 # <<
1723 # Using the singular to avoid running afoul o <<
1724 PHONY += rustdoc <<
1725 rustdoc: prepare <<
1726 $(Q)$(MAKE) $(build)=rust $@ <<
1727 <<
1728 # Testing target <<
1729 PHONY += rusttest <<
1730 rusttest: prepare <<
1731 $(Q)$(MAKE) $(build)=rust $@ <<
1732 <<
1733 # Formatting targets <<
1734 PHONY += rustfmt rustfmtcheck <<
1735 <<
1736 # We skip `rust/alloc` since we want to minim <<
1737 # <<
1738 # We match using absolute paths since `find` <<
1739 # when matching, which is a problem when e.g. <<
1740 # We `grep` afterwards in order to remove the <<
1741 rustfmt: <<
1742 $(Q)find $(abs_srctree) -type f -name <<
1743 -o -path $(abs_srctree)/rust/ <<
1744 -o -path $(abs_objtree)/rust/ <<
1745 | grep -Fv $(abs_srctree)/rus <<
1746 | grep -Fv $(abs_objtree)/rus <<
1747 | grep -Fv generated \ <<
1748 | xargs $(RUSTFMT) $(rustfmt_ <<
1749 <<
1750 rustfmtcheck: rustfmt_flags = --check <<
1751 rustfmtcheck: rustfmt <<
1752 <<
1753 # Misc <<
1754 # ------------------------------------------- <<
1755 <<
1756 PHONY += misc-check <<
1757 misc-check: <<
1758 $(Q)$(srctree)/scripts/misc-check <<
1759 <<
1760 all: misc-check <<
1761 <<
1762 PHONY += scripts_gdb <<
1763 scripts_gdb: prepare0 <<
1764 $(Q)$(MAKE) $(build)=scripts/gdb <<
1765 $(Q)ln -fsn $(abspath $(srctree)/scri <<
1766 <<
1767 ifdef CONFIG_GDB_SCRIPTS <<
1768 all: scripts_gdb <<
1769 endif <<
1770 <<
1771 else # KBUILD_EXTMOD <<
1772 <<
1773 filechk_kernel.release = echo $(KERNELRELEASE <<
1774 <<
1775 ### <<
1776 # External module support. <<
1777 # When building external modules the kernel u <<
1778 # read-only, and no consistency checks are ma <<
1779 # system is not used on the basis kernel. If <<
1780 # in the basis kernel ordinary make commands <<
1781 <<
1782 # We are always building only modules. <<
1783 KBUILD_BUILTIN := <<
1784 KBUILD_MODULES := 1 <<
1785 <<
1786 build-dir := $(KBUILD_EXTMOD) <<
1787 <<
1788 compile_commands.json: $(extmod_prefix)compil <<
1789 PHONY += compile_commands.json <<
1790 <<
1791 clean-dirs := $(KBUILD_EXTMOD) <<
1792 clean: private rm-files := $(KBUILD_EXTMOD)/M <<
1793 $(KBUILD_EXTMOD)/compile_commands.jso <<
1794 <<
1795 PHONY += prepare <<
1796 # now expand this into a simple variable to r <<
1797 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT <<
1798 prepare: <<
1799 @if [ "$(CC_VERSION_TEXT)" != "$(CONF <<
1800 echo >&2 "warning: the compil <<
1801 echo >&2 " The kernel was bu <<
1802 echo >&2 " You are using: <<
1803 fi <<
1804 <<
1805 PHONY += help <<
1806 help: <<
1807 @echo ' Building external modules.' <<
1808 @echo ' Syntax: make -C path/to/ker <<
1809 @echo '' <<
1810 @echo ' modules - default t <<
1811 @echo ' modules_install - install t <<
1812 @echo ' clean - remove ge <<
1813 @echo ' rust-analyzer - generate <<
1814 @echo '' <<
1815 <<
1816 ifndef CONFIG_MODULES <<
1817 modules modules_install: __external_modules_e <<
1818 __external_modules_error: <<
1819 @echo >&2 '***' <<
1820 @echo >&2 '*** The present kernel dis <<
1821 @echo >&2 '*** You cannot build or in <<
1822 @echo >&2 '***' <<
1823 @false <<
1824 endif <<
1825 <<
1826 endif # KBUILD_EXTMOD <<
1827 <<
1828 # ------------------------------------------- <<
1829 # Modules <<
1830 <<
1831 PHONY += modules modules_install modules_sign <<
1832 <<
1833 modules_install: <<
1834 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1835 sign-only=$(if $(filter modules_insta <<
1836 <<
1837 ifeq ($(CONFIG_MODULE_SIG),y) <<
1838 # modules_sign is a subset of modules_install <<
1839 # 'make modules_install modules_sign' is equi <<
1840 modules_sign: modules_install <<
1841 @: <<
1842 else <<
1843 modules_sign: <<
1844 @echo >&2 '***' <<
1845 @echo >&2 '*** CONFIG_MODULE_SIG is d <<
1846 @echo >&2 '***' <<
1847 @false <<
1848 endif <<
1849 <<
1850 ifdef CONFIG_MODULES <<
1851 <<
1852 $(MODORDER): $(build-dir) <<
1853 @: <<
1854 <<
1855 # KBUILD_MODPOST_NOFINAL can be set to skip t <<
1856 # This is solely useful to speed up test comp <<
1857 modules: modpost <<
1858 ifneq ($(KBUILD_MODPOST_NOFINAL),1) <<
1859 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1860 endif <<
1861 <<
1862 PHONY += modules_check <<
1863 modules_check: $(MODORDER) <<
1864 $(Q)$(CONFIG_SHELL) $(srctree)/script <<
1865 <<
1866 else # CONFIG_MODULES <<
1867 <<
1868 modules: <<
1869 @: <<
1870 <<
1871 KBUILD_MODULES := <<
1872 <<
1873 endif # CONFIG_MODULES <<
1874 <<
1875 PHONY += modpost <<
1876 modpost: $(if $(single-build),, $(if $(KBUILD <<
1877 $(if $(KBUILD_MODULES), modules_chec <<
1878 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1879 <<
1880 # Single targets <<
1881 # ------------------------------------------- <<
1882 # To build individual files in subdirectories <<
1883 # <<
1884 # make foo/bar/baz.s <<
1885 # <<
1886 # The supported suffixes for single-target ar <<
1887 # <<
1888 # To build only under specific subdirectories <<
1889 # <<
1890 # make foo/bar/baz/ <<
1891 <<
1892 ifdef single-build <<
1893 <<
1894 # .ko is special because modpost is needed <<
1895 single-ko := $(sort $(filter %.ko, $(MAKECMDG <<
1896 single-no-ko := $(filter-out $(single-ko), $( <<
1897 $(foreach x, o mod, $(patsubs <<
1898 <<
1899 $(single-ko): single_modules <<
1900 @: <<
1901 $(single-no-ko): $(build-dir) <<
1902 @: <<
1903 <<
1904 # Remove MODORDER when done because it is not <<
1905 PHONY += single_modules <<
1906 single_modules: $(single-no-ko) modules_prepa <<
1907 $(Q){ $(foreach m, $(single-ko), echo <<
1908 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1909 ifneq ($(KBUILD_MODPOST_NOFINAL),1) <<
1910 $(Q)$(MAKE) -f $(srctree)/scripts/Mak <<
1911 endif <<
1912 $(Q)rm -f $(MODORDER) <<
1913 <<
1914 single-goals := $(addprefix $(build-dir)/, $( <<
1915 <<
1916 KBUILD_MODULES := 1 <<
1917 <<
1918 endif <<
1919 <<
1920 # Preset locale variables to speed up the bui <<
1921 # tweaks to this spot to avoid wrong language <<
1922 # make menuconfig etc. <<
1923 # Error messages still appears in the origina <<
1924 PHONY += $(build-dir) <<
1925 $(build-dir): prepare <<
1926 $(Q)$(MAKE) $(build)=$@ need-builtin= <<
1927 <<
1928 clean-dirs := $(addprefix _clean_, $(clean-di <<
1929 PHONY += $(clean-dirs) clean <<
1930 $(clean-dirs): <<
1931 $(Q)$(MAKE) $(clean)=$(patsubst _clea <<
1932 <<
1933 clean: $(clean-dirs) <<
1934 $(call cmd,rmfiles) <<
1935 @find $(or $(KBUILD_EXTMOD), .) $(RCS <<
1936 \( -name '*.[aios]' -o -name <<
1937 -o -name '*.ko.*' \ <<
1938 -o -name '*.dtb' -o -name '*. <<
1939 -o -name '*.dtb.S' -o -name ' <<
1940 -o -name '*.dt.yaml' -o -name <<
1941 -o -name '*.dwo' -o -name '*. <<
1942 -o -name '*.su' -o -name '*.m <<
1943 -o -name '.*.d' -o -name '.*. <<
1944 -o -name '*.lex.c' -o -name ' <<
1945 -o -name '*.asn1.[ch]' \ <<
1946 -o -name '*.symtypes' -o -nam <<
1947 -o -name '*.c.[012]*.*' \ <<
1948 -o -name '*.ll' \ <<
1949 -o -name '*.gcno' \ <<
1950 -o -name '*.*.symversions' \) <<
1951 -o -name '.tmp_*' -print \ <<
1952 | xargs rm -rf <<
1953 <<
1954 # Generate tags for editors <<
1955 # ------------------------------------------- <<
1956 quiet_cmd_tags = GEN $@ <<
1957 cmd_tags = $(BASH) $(srctree)/scripts/t <<
1958 <<
1959 tags TAGS cscope gtags: FORCE <<
1960 $(call cmd,tags) <<
1961 <<
1962 # Generate rust-project.json (a file that des <<
1963 # Rust projects) for rust-analyzer (an implem <<
1964 # Protocol). <<
1965 PHONY += rust-analyzer <<
1966 rust-analyzer: <<
1967 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip <<
1968 $(Q)$(MAKE) $(build)=rust $@ <<
1969 <<
1970 # Script to generate missing namespace depend <<
1971 # ------------------------------------------- <<
1972 <<
1973 PHONY += nsdeps <<
1974 nsdeps: export KBUILD_NSDEPS=1 <<
1975 nsdeps: modules <<
1976 $(Q)$(CONFIG_SHELL) $(srctree)/script <<
1977 <<
1978 # Clang Tooling <<
1979 # ------------------------------------------- <<
1980 <<
1981 quiet_cmd_gen_compile_commands = GEN $@ <<
1982 cmd_gen_compile_commands = $(PYTHON3) $ <<
1983 <<
1984 $(extmod_prefix)compile_commands.json: $(srct <<
1985 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K <<
1986 $(if $(CONFIG_MODULES), $(MODORDER)) <<
1987 $(call if_changed,gen_compile_command <<
1988 <<
1989 targets += $(extmod_prefix)compile_commands.j <<
1990 <<
1991 PHONY += clang-tidy clang-analyzer <<
1992 <<
1993 ifdef CONFIG_CC_IS_CLANG <<
1994 quiet_cmd_clang_tools = CHECK $< <<
1995 cmd_clang_tools = $(PYTHON3) $(srctree) <<
1996 <<
1997 clang-tidy clang-analyzer: $(extmod_prefix)co <<
1998 $(call cmd,clang_tools) <<
1999 else <<
2000 clang-tidy clang-analyzer: <<
2001 @echo "$@ requires CC=clang" >&2 <<
2002 @false <<
2003 endif <<
2004 <<
2005 # Scripts to check various things for consist <<
2006 # ------------------------------------------- <<
2007 <<
2008 PHONY += includecheck versioncheck coccicheck <<
2009 <<
2010 includecheck: <<
2011 find $(srctree)/* $(RCS_FIND_IGNORE) <<
2012 -name '*.[hcS]' -type f -prin <<
2013 | xargs $(PERL) -w $(srctree) <<
2014 <<
2015 versioncheck: <<
2016 find $(srctree)/* $(RCS_FIND_IGNORE) <<
2017 -name '*.[hcS]' -type f -prin <<
2018 | xargs $(PERL) -w $(srctree) <<
2019 <<
2020 coccicheck: <<
2021 $(Q)$(BASH) $(srctree)/scripts/$@ <<
2022 <<
2023 export_report: <<
2024 $(PERL) $(srctree)/scripts/export_rep <<
2025 <<
2026 PHONY += checkstack kernelrelease kernelversi <<
2027 <<
2028 # UML needs a little special treatment here. <<
2029 # toolchain, so needs $(SUBARCH) passed to ch <<
2030 # else wants $(ARCH), including people doing <<
2031 # that $(SUBARCH) doesn't work here. <<
2032 ifeq ($(ARCH), um) <<
2033 CHECKSTACK_ARCH := $(SUBARCH) <<
2034 else <<
2035 CHECKSTACK_ARCH := $(ARCH) <<
2036 endif <<
2037 MINSTACKSIZE ?= 100 <<
2038 checkstack: <<
2039 $(OBJDUMP) -d vmlinux $$(find . -name <<
2040 $(PERL) $(srctree)/scripts/checkstack <<
2041 <<
2042 kernelrelease: <<
2043 @$(filechk_kernel.release) <<
2044 <<
2045 kernelversion: <<
2046 @echo $(KERNELVERSION) <<
2047 <<
2048 image_name: <<
2049 @echo $(KBUILD_IMAGE) <<
2050 <<
2051 PHONY += run-command <<
2052 run-command: <<
2053 $(Q)$(KBUILD_RUN_COMMAND) <<
2054 <<
2055 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file <<
2056 cmd_rmfiles = rm -rf $(rm-files) <<
2057 <<
2058 # read saved command lines for existing targe <<
2059 existing-targets := $(wildcard $(sort $(targe <<
2060 <<
2061 -include $(foreach f,$(existing-targets),$(di <<
2062 <<
2063 endif # config-build <<
2064 endif # mixed-build <<
2065 endif # need-sub-make <<
2066 <<
2067 PHONY += FORCE <<
2068 FORCE: <<
2069 <<
2070 # Declare the contents of the PHONY variable <<
2071 # information in a variable so we can use it <<
2072 .PHONY: $(PHONY) <<
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