1 # SPDX-License-Identifier: GPL-2.0
2 VERSION = 6
3 PATCHLEVEL = 12
4 SUBLEVEL = 0
5 EXTRAVERSION = -rc7
6 NAME = Baby Opossum Posse
7
8 # *DOCUMENTATION*
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 # Allows the usage of unstable features in sta
583 export RUSTC_BOOTSTRAP := 1
584
585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K
586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q
587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS
588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF
589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_
590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD
591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS
592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS
593
594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC
595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU
596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF
597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU
598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU
599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN
600
601 # Files to ignore in find ... statements
602
603 export RCS_FIND_IGNORE := \( -name SCCS -o -na
604 -name CVS -o -name .
605 -prune -o
606
607 # ============================================
608 # Rules shared between *config targets and bui
609
610 # Basic helpers built in scripts/basic/
611 PHONY += scripts_basic
612 scripts_basic:
613 $(Q)$(MAKE) $(build)=scripts/basic
614
615 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
619 # separate output directory. This allows conve
620 # 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:
631 @if [ -f $(srctree)/.config -o \
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
641 $(call cmd,makefile)
642 $(Q)test -e .gitignore || \
643 { echo "# this is build directory, ign
644 endif
645
646 # The expansion should be delayed until arch/$
647 # Some architectures define CROSS_COMPILE in a
648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r
649 # need export), and from include/config/auto.c
650 # upgrade.
651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC
652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell
653
654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)),
655 include $(srctree)/scripts/Makefile.clang
656 endif
657
658 # Include this also for config targets because
659 # cc-cross-prefix to determine CROSS_COMPILE.
660 ifdef need-compiler
661 include $(srctree)/scripts/Makefile.compiler
662 endif
663
664 ifdef config-build
665 # ============================================
666 # *config targets only - make sure prerequisit
667 # in scripts/kconfig to make the *config targe
668
669 # Read arch-specific Makefile to set KBUILD_DE
670 # KBUILD_DEFCONFIG may point out an alternativ
671 # used for 'make defconfig'
672 include $(srctree)/arch/$(SRCARCH)/Makefile
673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS
674
675 config: outputmakefile scripts_basic FORCE
676 $(Q)$(MAKE) $(build)=scripts/kconfig $
677
678 %config: outputmakefile scripts_basic FORCE
679 $(Q)$(MAKE) $(build)=scripts/kconfig $
680
681 else #!config-build
682 # ============================================
683 # Build targets only - this includes vmlinux,
684 # targets and others. In general all targets e
685
686 # If building an external module we do not car
687 # but instead __all depend on modules
688 PHONY += all
689 ifeq ($(KBUILD_EXTMOD),)
690 __all: all
691 else
692 __all: modules
693 endif
694
695 targets :=
696
697 # Decide whether to build built-in, modular, o
698 # Normally, just do built-in.
699
700 KBUILD_MODULES :=
701 KBUILD_BUILTIN := 1
702
703 # If we have only "make modules", don't compil
704 ifeq ($(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
726 ifeq ($(KBUILD_EXTMOD),)
727 # Objects we will link into vmlinux / subdirs
728 core-y :=
729 drivers-y :=
730 libs-y := lib/
731 endif # KBUILD_EXTMOD
732
733 # The all: target is the default when no targe
734 # command line.
735 # This allow a user to issue only 'make' to bu
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
745 # The arch Makefiles can override CC_FLAGS_FTR
746 ifdef CONFIG_FUNCTION_TRACER
747 CC_FLAGS_FTRACE := -pg
748 endif
749
750 include $(srctree)/arch/$(SRCARCH)/Makefile
751
752 ifdef need-config
753 ifdef may-sync-config
754 # Read in dependencies to all Kconfig* files,
755 # changes are detected. This should be include
756 # because some architectures define CROSS_COMP
757 include include/config/auto.conf.cmd
758
759 $(KCONFIG_CONFIG):
760 @echo >&2 '***'
761 @echo >&2 '*** Configuration file "$@"
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 $(srctree)/Makefile syn
781 else # !may-sync-config
782 # External modules and some install targets ne
783 # and include/config/auto.conf but do not care
784 # Use auto.conf to trigger the test
785 PHONY += include/config/auto.conf
786
787 include/config/auto.conf:
788 @test -e include/generated/autoconf.h
789 echo >&2;
790 echo >&2 " ERROR: Kernel configuratio
791 echo >&2 " include/generated/a
792 echo >&2 " Run 'make oldconfig
793 echo >&2 ;
794 /bin/false)
795
796 endif # may-sync-config
797 endif # need-config
798
799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch
800
801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
802 KBUILD_CFLAGS += -O2
803 KBUILD_RUSTFLAGS += -Copt-level=2
804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
805 KBUILD_CFLAGS += -Os
806 KBUILD_RUSTFLAGS += -Copt-level=s
807 endif
808
809 # Always set `debug-assertions` and `overflow-
810 # depends on `opt-level` and `debug-assertions
811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $(
812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C
813
814 # Tell gcc to never replace conditional load w
815 ifdef CONFIG_CC_IS_GCC
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 += $(call cc-option,-fno-allow
820 endif
821
822 ifdef CONFIG_READABLE_ASM
823 # Disable optimizations that make assembler li
824 # reorder blocks reorders the control in the f
825 # ipa clone creates specialized cloned functio
826 # partial inlining inlines only parts of funct
827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa-
828 endif
829
830 stackp-flags-y
831 stackp-flags-$(CONFIG_STACKPROTECTOR)
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
839 ifdef CONFIG_FRAME_POINTER
840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn
841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y
842 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
852 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 += $(call cc-option, -fno-stac
874
875 # Clear used registers at func exit (to reduce
876 ifdef CONFIG_ZERO_CALL_USED_REGS
877 KBUILD_CFLAGS += -fzero-call-used-regs=used-
878 endif
879
880 ifdef CONFIG_FUNCTION_TRACER
881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC
882 CC_FLAGS_FTRACE += -mrecord-mcount
883 ifdef CONFIG_HAVE_NOP_MCOUNT
884 ifeq ($(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
912
913 # We trigger additional mismatches with less i
914 ifdef CONFIG_DEBUG_SECTION_MISMATCH
915 KBUILD_CFLAGS += -fno-inline-functions-called-
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
983
984 # arch Makefile may override CC so keep this a
985 NOSTDINC_FLAGS += -nostdinc
986
987 # To gain proper coverage for CONFIG_UBSAN_BOU
988 # the kernel uses only C99 flexible arrays for
989 # arrays. Enforce this for everything that may
990 # perform bounds checking.
991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl
992
993 #Currently, disable -Wstringop-overflow for GC
994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW
995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) +
996
997 # disable invalid "can't wrap" optimizations f
998 KBUILD_CFLAGS += -fno-strict-overflow
999
1000 # Make sure -fstack-check isn't enabled (like
1001 KBUILD_CFLAGS += -fno-stack-check
1002
1003 # conserve stack if available
1004 ifdef CONFIG_CC_IS_GCC
1005 KBUILD_CFLAGS += -fconserve-stack
1006 endif
1007
1008 # change __FILE__ to the relative path from t
1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p
1010
1011 # include additional Makefiles when needed
1012 include-y := scripts/Ma
1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma
1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma
1015 include-$(CONFIG_KASAN) += scripts/Ma
1016 include-$(CONFIG_KCSAN) += scripts/Ma
1017 include-$(CONFIG_KMSAN) += scripts/Ma
1018 include-$(CONFIG_UBSAN) += scripts/Ma
1019 include-$(CONFIG_KCOV) += scripts/Ma
1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma
1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma
1022
1023 include $(addprefix $(srctree)/, $(include-y)
1024
1025 # scripts/Makefile.gcc-plugins is intentional
1026 # Do not add $(call cc-option,...) below this
1027 # from the clean source tree, the GCC plugins
1028
1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS
1030 KBUILD_CPPFLAGS += $(KCPPFLAGS)
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 += $(call ld-option,--no-warn
1041 endif
1042
1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
1044 LDFLAGS_vmlinux += -X
1045 endif
1046
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 $(CONFIG_64BIT),-m64,-m32)
1070
1071 # Default kernel image to build when no speci
1072 # KBUILD_IMAGE may be overruled on the comman
1073 # set in the environment
1074 # Also any assignments in arch/$(ARCH)/Makefi
1075 # this default value
1076 export KBUILD_IMAGE ?= vmlinux
1077
1078 #
1079 # INSTALL_PATH specifies where to place the u
1080 # images. Default is /boot, but you can set i
1081 export INSTALL_PATH ?= /boot
1082
1083 #
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
1092 # relocations required by build roots. This
1093 # makefile but the argument can be passed to
1094 #
1095
1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K
1097 export MODLIB
1098
1099 PHONY += prepare0
1100
1101 export extmod_prefix = $(if $(KBUILD_EXTMOD),
1102 export MODORDER := $(extmod_prefix)modules.or
1103 export MODULES_NSDEPS := $(extmod_prefix)modu
1104
1105 ifeq ($(KBUILD_EXTMOD),)
1106
1107 build-dir := .
1108 clean-dirs := $(sort . Documentation \
1109 $(patsubst %/,%,$(filter
1110 $(drivers-) $(libs-))
1111
1112 export ARCH_CORE := $(core-y)
1113 export ARCH_LIB := $(filter %/, $(lib
1114 export ARCH_DRIVERS := $(drivers-y) $(dri
1115 # Externally visible symbols (used by link-vm
1116
1117 KBUILD_VMLINUX_OBJS := ./built-in.a
1118 ifdef CONFIG_MODULES
1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a
1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib
1121 else
1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a,
1123 endif
1124
1125 export KBUILD_VMLINUX_LIBS
1126 export KBUILD_LDS := arch/$(SRCARCH)
1127
1128 ifdef CONFIG_TRIM_UNUSED_KSYMS
1129 # For the kernel to actually contain only the
1130 # we have to build modules as well to determi
1131 KBUILD_MODULES := 1
1132 endif
1133
1134 # '$(AR) mPi' needs 'T' to workaround the bug
1135 quiet_cmd_ar_vmlinux.a = AR $@
1136 cmd_ar_vmlinux.a = \
1137 rm -f $@; \
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
1168 # The actual objects are generated when desce
1169 # make sure no implicit rule kicks in
1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $
1171
1172 ifeq ($(origin KERNELRELEASE),file)
1173 filechk_kernel.release = $(srctree)/scripts/s
1174 else
1175 filechk_kernel.release = echo $(KERNELRELEASE
1176 endif
1177
1178 # Store (new) KERNELRELEASE string in include
1179 include/config/kernel.release: FORCE
1180 $(call filechk,kernel.release)
1181
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
1189 # Things we need to do before we recursively
1190 # or the modules are listed in "prepare".
1191 # A multi level approach is used. prepareN is
1192 # archprepare is used in arch Makefiles and w
1193 # version.h and scripts_basic is processed /
1194
1195 PHONY += prepare archprepare
1196
1197 archprepare: outputmakefile archheaders archs
1198 asm-generic $(version_h) include/gene
1199 include/generated/compile.h include/g
1200
1201 prepare0: archprepare
1202 $(Q)$(MAKE) $(build)=scripts/mod
1203 $(Q)$(MAKE) $(build)=. prepare
1204
1205 # All the preparing..
1206 prepare: prepare0
1207 ifdef CONFIG_RUST
1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip
1209 $(Q)$(MAKE) $(build)=rust
1210 endif
1211
1212 PHONY += remove-stale-files
1213 remove-stale-files:
1214 $(Q)$(srctree)/scripts/remove-stale-f
1215
1216 # Support for using generic headers in asm-ge
1217 asm-generic := -f $(srctree)/scripts/Makefile
1218
1219 PHONY += asm-generic uapi-asm-generic
1220 asm-generic: uapi-asm-generic
1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC
1222 generic=include/asm-generic
1223 uapi-asm-generic:
1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC
1225 generic=include/uapi/asm-generic
1226
1227 # Generate some files
1228 # -------------------------------------------
1229
1230 # KERNELRELEASE can change from a few differe
1231 # needs to be updated, so this check is force
1232
1233 uts_len := 64
1234 define filechk_utsrelease.h
1235 if [ `echo -n "$(KERNELRELEASE)" | wc
1236 echo '"$(KERNELRELEASE)" exceeds $(
1237 exit 1;
1238 fi;
1239 echo \#define UTS_RELEASE \"$(KERNELR
1240 endef
1241
1242 define filechk_version.h
1243 if [ $(SUBLEVEL) -gt 255 ]; then
1244 echo \#define LINUX_VERSION_C
1245 expr $(VERSION) \* 65536 + $(
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
1256
1257 $(version_h): private PATCHLEVEL := $(or $(PA
1258 $(version_h): private SUBLEVEL := $(or $(SUBL
1259 $(version_h): FORCE
1260 $(call filechk,version.h)
1261
1262 include/generated/utsrelease.h: include/confi
1263 $(call filechk,utsrelease.h)
1264
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
1272 headerdep:
1273 $(Q)find $(srctree)/include/ -name '*
1274 $(srctree)/scripts/headerdep.pl -I$(s
1275
1276 # -------------------------------------------
1277 # Kernel headers
1278
1279 #Default location for installed headers
1280 export INSTALL_HDR_PATH = $(objtree)/usr
1281
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
1372 # -------------------------------------------
1373 # Kernel selftest
1374
1375 PHONY += kselftest
1376 kselftest: headers
1377 $(Q)$(MAKE) -C $(srctree)/tools/testi
1378
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 $(srctree)/Makefile ol
1388
1389 # -------------------------------------------
1390 # Devicetree files
1391
1392 ifneq ($(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
1430 endif
1431
1432 PHONY += scripts_dtc
1433 scripts_dtc: scripts_basic
1434 $(Q)$(MAKE) $(build)=scripts/dtc
1435
1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO
1437 export CHECK_DTBS=y
1438 endif
1439
1440 PHONY += dt_binding_check dt_binding_schemas
1441 dt_binding_check: dt_binding_schemas scripts_
1442 $(Q)$(MAKE) $(build)=Documentation/de
1443
1444 dt_binding_schemas:
1445 $(Q)$(MAKE) $(build)=Documentation/de
1446
1447 PHONY += dt_compatible_check
1448 dt_compatible_check: dt_binding_schemas
1449 $(Q)$(MAKE) $(build)=Documentation/de
1450
1451 # -------------------------------------------
1452 # Modules
1453
1454 ifdef CONFIG_MODULES
1455
1456 # By default, build modules as well
1457
1458 all: modules
1459
1460 # When we're building modules with modversion
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 #
1469
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
1479 # Target to prepare building external modules
1480 modules_prepare: prepare
1481 $(Q)$(MAKE) $(build)=scripts scripts/
1482
1483 endif # CONFIG_MODULES
1484
1485 ###
1486 # Cleaning is done on three levels.
1487 # make clean Delete most generated files
1488 # Leave enough to build extern
1489 # make mrproper Delete the current configura
1490 # make distclean Remove editor backup files,
1491
1492 # Directories & files removed with 'make clea
1493 CLEAN_FILES += vmlinux.symvers modules-only.s
1494 modules.builtin modules.builti
1495 modules.builtin.ranges vmlinux
1496 compile_commands.json rust/tes
1497 rust-project.json .vmlinux.obj
1498
1499 # Directories & files removed with 'make mrpr
1500 MRPROPER_FILES += include/config include/gene
1501 arch/$(SRCARCH)/include/gen
1502 debian snap tar-install PKG
1503 .config .config.old .versio
1504 Module.symvers \
1505 certs/signing_key.pem \
1506 certs/x509.genkey \
1507 vmlinux-gdb.py \
1508 rpmbuild \
1509 rust/libmacros.so
1510
1511 # clean - Delete most, but leave enough to bu
1512 #
1513 clean: private rm-files := $(CLEAN_FILES)
1514
1515 PHONY += archclean vmlinuxclean
1516
1517 vmlinuxclean:
1518 $(Q)$(CONFIG_SHELL) $(srctree)/script
1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f
1520
1521 clean: archclean vmlinuxclean resolve_btfids_
1522
1523 # mrproper - Delete all generated files, incl
1524 #
1525 mrproper: private rm-files := $(MRPROPER_FILE
1526 mrproper-dirs := $(addprefix _mrproper_,
1527
1528 PHONY += $(mrproper-dirs) mrproper
1529 $(mrproper-dirs):
1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr
1531
1532 mrproper: clean $(mrproper-dirs)
1533 $(call cmd,rmfiles)
1534 @find . $(RCS_FIND_IGNORE) \
1535 \( -name '*.rmeta' \) \
1536 -type f -print | xargs rm -f
1537
1538 # distclean
1539 #
1540 PHONY += distclean
1541
1542 distclean: mrproper
1543 @find . $(RCS_FIND_IGNORE) \
1544 \( -name '*.orig' -o -name '*
1545 -o -name '*.bak' -o -name '#*
1546 -o -name 'core' -o -name tags
1547 -o -name GPATH -o -name GRTAG
1548 -type f -print | xargs rm -f
1549
1550
1551 # Packaging of the kernel to various formats
1552 # -------------------------------------------
1553
1554 %src-pkg: FORCE
1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak
1556 %pkg: include/config/kernel.release FORCE
1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak
1558
1559 # Brief documentation of the typical targets
1560 # -------------------------------------------
1561
1562 boards := $(wildcard $(srctree)/arch/$(SRCARC
1563 boards := $(sort $(notdir $(boards)))
1564 board-dirs := $(dir $(wildcard $(srctree)/arc
1565 board-dirs := $(sort $(notdir $(board-dirs:/=
1566
1567 PHONY += help
1568 help:
1569 @echo 'Cleaning targets:'
1570 @echo ' clean - Remove mo
1571 @echo ' enough bu
1572 @echo ' mrproper - Remove al
1573 @echo ' distclean - mrproper
1574 @echo ''
1575 @$(MAKE) -f $(srctree)/scripts/kconfi
1576 @echo ''
1577 @echo 'Other generic targets:'
1578 @echo ' all - Build all
1579 @echo '* vmlinux - Build the
1580 @echo '* modules - Build all
1581 @echo ' modules_install - Install a
1582 @echo ' vdso_install - Install u
1583 @echo ' dir/ - Build all
1584 @echo ' dir/file.[ois] - Build spe
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
1590 @echo ' modules_prepare - Set up fo
1591 @echo ' tags/TAGS - Generate
1592 @echo ' cscope - Generate
1593 @echo ' gtags - Generate
1594 @echo ' kernelrelease - Output th
1595 @echo ' kernelversion - Output th
1596 @echo ' image_name - Output th
1597 @echo ' headers_install - Install s
1598 echo ' (default:
1599 echo ''
1600 @echo 'Static analysers:'
1601 @echo ' checkstack - Generate
1602 @echo ' with a st
1603 @echo ' versioncheck - Sanity ch
1604 @echo ' includecheck - Check for
1605 @echo ' export_report - List the
1606 @echo ' headerdep - Detect in
1607 @echo ' coccicheck - Check wit
1608 @echo ' clang-analyzer - Check wit
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 $(dtstree), \
1644 echo 'Devicetree:'; \
1645 echo '* dtbs -
1646 echo ' dtbs_install -
1647 echo ' dt_binding_check -
1648 echo ' dt_binding_schemas -
1649 echo ' dtbs_check -
1650 echo '')
1651
1652 @echo 'Userspace tools targets:'
1653 @echo ' use "make tools/help"'
1654 @echo ' or "cd tools; make help"'
1655 @echo ''
1656 @echo 'Kernel packaging:'
1657 @$(MAKE) -f $(srctree)/scripts/Makefi
1658 @echo ''
1659 @echo 'Documentation targets:'
1660 @$(MAKE) -f $(srctree)/Documentation/
1661 @echo ''
1662 @echo 'Architecture-specific targets
1663 @$(or $(archhelp),\
1664 echo ' No architecture-speci
1665 @echo ''
1666 @$(if $(boards), \
1667 $(foreach b, $(boards), \
1668 printf " %-27s - Build for %
1669 echo '')
1670 @$(if $(board-dirs), \
1671 $(foreach b, $(board-dirs), \
1672 printf " %-16s - Show %s-spe
1673 printf " %-16s - Show all of
1674 echo '')
1675
1676 @echo ' make V=n [targets] 1: ver
1677 @echo ' 2: giv
1678 @echo ' V=1 an
1679 @echo ' make O=dir [targets] Locate
1680 @echo ' make C=1 [targets] Check
1681 @echo ' (spars
1682 @echo ' make C=2 [targets] Force
1683 @echo ' make RECORDMCOUNT_WARN=1 [t
1684 @echo ' make W=n [targets] Enable
1685 @echo ' 1: warnings w
1686 @echo ' 2: warnings w
1687 @echo ' 3: more obscu
1688 @echo ' c: extra chec
1689 @echo ' e: warnings a
1690 @echo ' Multiple leve
1691 @$(if $(dtstree), \
1692 echo ' make CHECK_DTBS=1 [ta
1693 echo ' This can be ap
1694 )
1695 @echo ''
1696 @echo 'Execute "make" or "make all"
1697 @echo 'For further info see the ./RE
1698
1699
1700 help-board-dirs := $(addprefix help-,$(board-
1701
1702 help-boards: $(help-board-dirs)
1703
1704 boards-per-dir = $(sort $(notdir $(wildcard $
1705
1706 $(help-board-dirs): help-%:
1707 @echo 'Architecture-specific targets
1708 @$(if $(boards-per-dir), \
1709 $(foreach b, $(boards-per-dir
1710 printf " %-24s - Build for %
1711 echo '')
1712
1713
1714 # Documentation targets
1715 # -------------------------------------------
1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html
1717 linkcheckdocs dochelp refcheck
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
1781 else # KBUILD_EXTMOD
1782
1783 filechk_kernel.release = echo $(KERNELRELEASE
1784
1785 ###
1786 # External module support.
1787 # When building external modules the kernel u
1788 # read-only, and no consistency checks are ma
1789 # system is not used on the basis kernel. If
1790 # in the basis kernel ordinary make commands
1791
1792 # We are always building only modules.
1793 KBUILD_BUILTIN :=
1794 KBUILD_MODULES := 1
1795
1796 build-dir := $(KBUILD_EXTMOD)
1797
1798 compile_commands.json: $(extmod_prefix)compil
1799 PHONY += compile_commands.json
1800
1801 clean-dirs := $(KBUILD_EXTMOD)
1802 clean: private rm-files := $(KBUILD_EXTMOD)/M
1803 $(KBUILD_EXTMOD)/compile_commands.jso
1804
1805 PHONY += prepare
1806 # now expand this into a simple variable to r
1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT
1808 prepare:
1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF
1810 echo >&2 "warning: the compil
1811 echo >&2 " The kernel was bu
1812 echo >&2 " You are using:
1813 fi
1814
1815 PHONY += help
1816 help:
1817 @echo ' Building external modules.'
1818 @echo ' Syntax: make -C path/to/ker
1819 @echo ''
1820 @echo ' modules - default t
1821 @echo ' modules_install - install t
1822 @echo ' clean - remove ge
1823 @echo ' rust-analyzer - generate
1824 @echo ''
1825
1826 ifndef CONFIG_MODULES
1827 modules modules_install: __external_modules_e
1828 __external_modules_error:
1829 @echo >&2 '***'
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
1837
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
1965 # -------------------------------------------
1966 quiet_cmd_tags = GEN $@
1967 cmd_tags = $(BASH) $(srctree)/scripts/t
1968
1969 tags TAGS cscope gtags: FORCE
1970 $(call cmd,tags)
1971
1972 # Generate rust-project.json (a file that des
1973 # Rust projects) for rust-analyzer (an implem
1974 # Protocol).
1975 PHONY += rust-analyzer
1976 rust-analyzer:
1977 +$(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
2016 # -------------------------------------------
2017
2018 PHONY += includecheck versioncheck coccicheck
2019
2020 includecheck:
2021 find $(srctree)/* $(RCS_FIND_IGNORE)
2022 -name '*.[hcS]' -type f -prin
2023 | xargs $(PERL) -w $(srctree)
2024
2025 versioncheck:
2026 find $(srctree)/* $(RCS_FIND_IGNORE)
2027 -name '*.[hcS]' -type f -prin
2028 | xargs $(PERL) -w $(srctree)
2029
2030 coccicheck:
2031 $(Q)$(BASH) $(srctree)/scripts/$@
2032
2033 export_report:
2034 $(PERL) $(srctree)/scripts/export_rep
2035
2036 PHONY += checkstack kernelrelease kernelversi
2037
2038 # UML needs a little special treatment here.
2039 # toolchain, so needs $(SUBARCH) passed to ch
2040 # else wants $(ARCH), including people doing
2041 # that $(SUBARCH) doesn't work here.
2042 ifeq ($(ARCH), um)
2043 CHECKSTACK_ARCH := $(SUBARCH)
2044 else
2045 CHECKSTACK_ARCH := $(ARCH)
2046 endif
2047 MINSTACKSIZE ?= 100
2048 checkstack:
2049 $(OBJDUMP) -d vmlinux $$(find . -name
2050 $(PERL) $(srctree)/scripts/checkstack
2051
2052 kernelrelease:
2053 @$(filechk_kernel.release)
2054
2055 kernelversion:
2056 @echo $(KERNELVERSION)
2057
2058 image_name:
2059 @echo $(KBUILD_IMAGE)
2060
2061 PHONY += run-command
2062 run-command:
2063 $(Q)$(KBUILD_RUN_COMMAND)
2064
2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file
2066 cmd_rmfiles = rm -rf $(rm-files)
2067
2068 # read saved command lines for existing targe
2069 existing-targets := $(wildcard $(sort $(targe
2070
2071 -include $(foreach f,$(existing-targets),$(di
2072
2073 endif # config-build
2074 endif # mixed-build
2075 endif # need-sub-make
2076
2077 PHONY += FORCE
2078 FORCE:
2079
2080 # Declare the contents of the PHONY variable
2081 # information in a variable so we can use it
2082 .PHONY: $(PHONY)
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