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TOMOYO Linux Cross Reference
Linux/Makefile

Version: ~ [ linux-6.11.5 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.58 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.114 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.169 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.228 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.284 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.322 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

Diff markup

Differences between /Makefile (Version linux-6.11.5) and /Makefile (Version linux-3.10.108)


  1 # SPDX-License-Identifier: GPL-2.0             !!   1 VERSION = 3
  2 VERSION = 6                                    !!   2 PATCHLEVEL = 10
  3 PATCHLEVEL = 11                                !!   3 SUBLEVEL = 108
  4 SUBLEVEL = 5                                   << 
  5 EXTRAVERSION =                                      4 EXTRAVERSION =
  6 NAME = Baby Opossum Posse                      !!   5 NAME = END-OF-LIFE
  7                                                     6 
  8 # *DOCUMENTATION*                                   7 # *DOCUMENTATION*
  9 # To see a list of typical targets execute "ma      8 # To see a list of typical targets execute "make help"
 10 # More info can be located in ./README              9 # More info can be located in ./README
 11 # Comments in this file are targeted only to t     10 # Comments in this file are targeted only to the developer, do not
 12 # expect to learn how to build the kernel read     11 # expect to learn how to build the kernel reading this file.
 13                                                    12 
 14 ifeq ($(filter output-sync,$(.FEATURES)),)     !!  13 # Do not:
 15 $(error GNU Make >= 4.0 is required. Your Make !!  14 # o  use make's built-in rules and variables
 16 endif                                          !!  15 #    (this increases performance and avoids hard-to-debug behaviour);
 17                                                !!  16 # o  print "Entering directory ...";
 18 $(if $(filter __%, $(MAKECMDGOALS)), \         !!  17 MAKEFLAGS += -rR --no-print-directory
 19         $(error targets prefixed with '__' are << 
 20                                                    18 
 21 # That's our default target when none is given !!  19 # Avoid funny character set dependencies
 22 PHONY := __all                                 !!  20 unexport LC_ALL
 23 __all:                                         !!  21 LC_COLLATE=C
                                                   >>  22 LC_NUMERIC=C
                                                   >>  23 export LC_COLLATE LC_NUMERIC
 24                                                    24 
 25 # We are using a recursive build, so we need t     25 # We are using a recursive build, so we need to do a little thinking
 26 # to get the ordering right.                       26 # to get the ordering right.
 27 #                                                  27 #
 28 # Most importantly: sub-Makefiles should only      28 # Most importantly: sub-Makefiles should only ever modify files in
 29 # their own directory. If in some directory we     29 # their own directory. If in some directory we have a dependency on
 30 # a file in another dir (which doesn't happen      30 # a file in another dir (which doesn't happen often, but it's often
 31 # unavoidable when linking the built-in.a targ !!  31 # unavoidable when linking the built-in.o targets which finally
 32 # turn into vmlinux), we will call a sub make      32 # turn into vmlinux), we will call a sub make in that other dir, and
 33 # after that we are sure that everything which     33 # after that we are sure that everything which is in that other dir
 34 # is now up to date.                               34 # is now up to date.
 35 #                                                  35 #
 36 # The only cases where we need to modify files     36 # The only cases where we need to modify files which have global
 37 # effects are thus separated out and done befo     37 # effects are thus separated out and done before the recursive
 38 # descending is started. They are now explicit     38 # descending is started. They are now explicitly listed as the
 39 # prepare rule.                                    39 # prepare rule.
 40                                                    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) $(build)=scripts/basic        << 
 75 #                                              << 
 76 # If KBUILD_VERBOSE contains 1, the whole comm << 
 77 # If KBUILD_VERBOSE contains 2, the reason for << 
 78 #                                              << 
 79 # To put more focus on warnings, be less verbo     41 # To put more focus on warnings, be less verbose as default
 80 # Use 'make V=1' to see the full commands          42 # Use 'make V=1' to see the full commands
 81                                                    43 
 82 ifeq ("$(origin V)", "command line")               44 ifeq ("$(origin V)", "command line")
 83   KBUILD_VERBOSE = $(V)                            45   KBUILD_VERBOSE = $(V)
 84 endif                                              46 endif
 85                                                !!  47 ifndef KBUILD_VERBOSE
 86 quiet = quiet_                                 !!  48   KBUILD_VERBOSE = 0
 87 Q = @                                          << 
 88                                                << 
 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),)    << 
 90   quiet =                                      << 
 91   Q =                                          << 
 92 endif                                          << 
 93                                                << 
 94 # If the user is running make -s (silent mode) << 
 95 # commands                                     << 
 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS << 
 97 quiet=silent_                                  << 
 98 override KBUILD_VERBOSE :=                     << 
 99 endif                                              49 endif
100                                                    50 
101 export quiet Q KBUILD_VERBOSE                  << 
102                                                << 
103 # Call a source code checker (by default, "spa     51 # Call a source code checker (by default, "sparse") as part of the
104 # C compilation.                                   52 # C compilation.
105 #                                                  53 #
106 # Use 'make C=1' to enable checking of only re     54 # Use 'make C=1' to enable checking of only re-compiled files.
107 # Use 'make C=2' to enable checking of *all* s     55 # Use 'make C=2' to enable checking of *all* source files, regardless
108 # of whether they are re-compiled or not.          56 # of whether they are re-compiled or not.
109 #                                                  57 #
110 # See the file "Documentation/dev-tools/sparse !!  58 # See the file "Documentation/sparse.txt" for more details, including
111 # including where to get the "sparse" utility. !!  59 # where to get the "sparse" utility.
112                                                    60 
113 ifeq ("$(origin C)", "command line")               61 ifeq ("$(origin C)", "command line")
114   KBUILD_CHECKSRC = $(C)                           62   KBUILD_CHECKSRC = $(C)
115 endif                                              63 endif
116 ifndef KBUILD_CHECKSRC                             64 ifndef KBUILD_CHECKSRC
117   KBUILD_CHECKSRC = 0                              65   KBUILD_CHECKSRC = 0
118 endif                                              66 endif
119                                                    67 
120 export KBUILD_CHECKSRC                         !!  68 # Use make M=dir to specify directory of external module to build
121                                                !!  69 # Old syntax make ... SUBDIRS=$PWD is still supported
122 # Enable "clippy" (a linter) as part of the Ru !!  70 # Setting the environment variable KBUILD_EXTMOD take precedence
123 #                                              !!  71 ifdef SUBDIRS
124 # Use 'make CLIPPY=1' to enable it.            !!  72   KBUILD_EXTMOD ?= $(SUBDIRS)
125 ifeq ("$(origin CLIPPY)", "command line")      << 
126   KBUILD_CLIPPY := $(CLIPPY)                   << 
127 endif                                              73 endif
128                                                    74 
129 export KBUILD_CLIPPY                           << 
130                                                << 
131 # Use make M=dir or set the environment variab << 
132 # directory of external module to build. Setti << 
133 ifeq ("$(origin M)", "command line")               75 ifeq ("$(origin M)", "command line")
134   KBUILD_EXTMOD := $(M)                            76   KBUILD_EXTMOD := $(M)
135 endif                                              77 endif
136                                                    78 
137 $(if $(word 2, $(KBUILD_EXTMOD)), \            !!  79 # kbuild supports saving output files in a separate directory.
138         $(error building multiple external mod !!  80 # To locate output files in a separate directory two syntaxes are supported.
139                                                !!  81 # In both cases the working directory must be the root of the kernel src.
140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 
141         $(error module directory path cannot c << 
142                                                << 
143 # Remove trailing slashes                      << 
144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),)        << 
145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM << 
146 endif                                          << 
147                                                << 
148 export KBUILD_EXTMOD                           << 
149                                                << 
150 # backward compatibility                       << 
151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 
152                                                << 
153 ifeq ("$(origin W)", "command line")           << 
154   KBUILD_EXTRA_WARN := $(W)                    << 
155 endif                                          << 
156                                                << 
157 export KBUILD_EXTRA_WARN                       << 
158                                                << 
159 # Kbuild will save output files in the current << 
160 # This does not need to match to the root of t << 
161 #                                              << 
162 # For example, you can do this:                << 
163 #                                              << 
164 #  cd /dir/to/store/output/files; make -f /dir << 
165 #                                              << 
166 # If you want to save output files in a differ << 
167 # two syntaxes to specify it.                  << 
168 #                                              << 
169 # 1) O=                                            82 # 1) O=
170 # Use "make O=dir/to/store/output/files/"          83 # Use "make O=dir/to/store/output/files/"
171 #                                                  84 #
172 # 2) Set KBUILD_OUTPUT                             85 # 2) Set KBUILD_OUTPUT
173 # Set the environment variable KBUILD_OUTPUT t !!  86 # Set the environment variable KBUILD_OUTPUT to point to the directory
174 # export KBUILD_OUTPUT=dir/to/store/output/fil !!  87 # where the output files shall be placed.
                                                   >>  88 # export KBUILD_OUTPUT=dir/to/store/output/files/
                                                   >>  89 # make
175 #                                                  90 #
176 # The O= assignment takes precedence over the      91 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
177 # variable.                                        92 # variable.
178                                                    93 
179 # Do we want to change the working directory?  !!  94 
                                                   >>  95 # KBUILD_SRC is set on invocation of make in OBJ directory
                                                   >>  96 # KBUILD_SRC is not intended to be used by the regular user (for now)
                                                   >>  97 ifeq ($(KBUILD_SRC),)
                                                   >>  98 
                                                   >>  99 # OK, Make called in directory where kernel src resides
                                                   >> 100 # Do we want to locate output files in a separate directory?
180 ifeq ("$(origin O)", "command line")              101 ifeq ("$(origin O)", "command line")
181   KBUILD_OUTPUT := $(O)                           102   KBUILD_OUTPUT := $(O)
182 endif                                             103 endif
183                                                   104 
184 ifneq ($(KBUILD_OUTPUT),)                      !! 105 ifeq ("$(origin W)", "command line")
185 # $(realpath ...) gets empty if the path does  !! 106   export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
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 $(error source directory cannot contain spaces << 
194 endif                                             107 endif
195                                                   108 
196 export sub_make_done := 1                      !! 109 # That's our default target when none is given on the command line
197                                                !! 110 PHONY := _all
198 endif # sub_make_done                          !! 111 _all:
199                                                << 
200 ifeq ($(abs_objtree),$(CURDIR))                << 
201 # Suppress "Entering directory ..." if we are  << 
202 no-print-directory := --no-print-directory     << 
203 else                                           << 
204 # Recursion to show "Entering directory ..."   << 
205 need-sub-make := 1                             << 
206 endif                                          << 
207                                                   112 
208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 113 # Cancel implicit rules on top Makefile
209 # If --no-print-directory is unset, recurse on !! 114 $(CURDIR)/Makefile Makefile: ;
210 # You may end up recursing into __sub-make twi << 
211 # behavior change in GNU Make 4.4.1.           << 
212 need-sub-make := 1                             << 
213 endif                                          << 
214                                                   115 
215 ifeq ($(need-sub-make),1)                      !! 116 ifneq ($(KBUILD_OUTPUT),)
                                                   >> 117 # Invoke a second make in the output directory, passing relevant variables
                                                   >> 118 # check that the output directory actually exists
                                                   >> 119 saved-output := $(KBUILD_OUTPUT)
                                                   >> 120 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
                                                   >> 121 $(if $(KBUILD_OUTPUT),, \
                                                   >> 122      $(error output directory "$(saved-output)" does not exist))
216                                                   123 
217 PHONY += $(MAKECMDGOALS) __sub-make            !! 124 PHONY += $(MAKECMDGOALS) sub-make
218                                                   125 
219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 126 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
220         @:                                        127         @:
221                                                   128 
222 # Invoke a second make in the output directory !! 129 sub-make: FORCE
223 __sub-make:                                    !! 130         $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
224         $(Q)$(MAKE) $(no-print-directory) -C $ !! 131         KBUILD_SRC=$(CURDIR) \
225         -f $(abs_srctree)/Makefile $(MAKECMDGO !! 132         KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
                                                   >> 133         $(filter-out _all sub-make,$(MAKECMDGOALS))
226                                                   134 
227 else # need-sub-make                           !! 135 # Leave processing to above invocation of make
                                                   >> 136 skip-makefile := 1
                                                   >> 137 endif # ifneq ($(KBUILD_OUTPUT),)
                                                   >> 138 endif # ifeq ($(KBUILD_SRC),)
228                                                   139 
229 # We process the rest of the Makefile if this     140 # We process the rest of the Makefile if this is the final invocation of make
                                                   >> 141 ifeq ($(skip-makefile),)
230                                                   142 
231 ifeq ($(abs_srctree),$(abs_objtree))           !! 143 # If building an external module we do not care about the all: rule
232         # building in the source tree          !! 144 # but instead _all depend on modules
233         srctree := .                           !! 145 PHONY += all
234         building_out_of_srctree :=             << 
235 else                                           << 
236         ifeq ($(abs_srctree)/,$(dir $(abs_objt << 
237                 # building in a subdirectory o << 
238                 srctree := ..                  << 
239         else                                   << 
240                 srctree := $(abs_srctree)      << 
241         endif                                  << 
242         building_out_of_srctree := 1           << 
243 endif                                          << 
244                                                << 
245 ifneq ($(KBUILD_ABS_SRCTREE),)                 << 
246 srctree := $(abs_srctree)                      << 
247 endif                                          << 
248                                                << 
249 objtree         := .                           << 
250                                                << 
251 VPATH           :=                             << 
252                                                << 
253 ifeq ($(KBUILD_EXTMOD),)                       << 
254 ifdef building_out_of_srctree                  << 
255 VPATH           := $(srctree)                  << 
256 endif                                          << 
257 endif                                          << 
258                                                << 
259 export building_out_of_srctree srctree objtree << 
260                                                << 
261 # To make sure we do not include .config for a << 
262 # catch them early, and hand them over to scri << 
263 # It is allowed to specify more targets when c << 
264 # mixing *config targets and build targets.    << 
265 # For example 'make oldconfig all'.            << 
266 # Detect when mixed targets is specified, and  << 
267 # of make so .config is not included in this c << 
268                                                << 
269 version_h := include/generated/uapi/linux/vers << 
270                                                << 
271 clean-targets := %clean mrproper cleandocs     << 
272 no-dot-config-targets := $(clean-targets) \    << 
273                          cscope gtags TAGS tag << 
274                          $(version_h) headers  << 
275                          %asm-generic kernelve << 
276                          outputmakefile rustav << 
277 no-sync-config-targets := $(no-dot-config-targ << 
278                           image_name           << 
279 single-targets := %.a %.i %.ko %.lds %.ll %.ls << 
280                                                << 
281 config-build    :=                             << 
282 mixed-build     :=                             << 
283 need-config     := 1                           << 
284 may-sync-config := 1                           << 
285 single-build    :=                             << 
286                                                << 
287 ifneq ($(filter $(no-dot-config-targets), $(MA << 
288     ifeq ($(filter-out $(no-dot-config-targets << 
289         need-config :=                         << 
290     endif                                      << 
291 endif                                          << 
292                                                << 
293 ifneq ($(filter $(no-sync-config-targets), $(M << 
294     ifeq ($(filter-out $(no-sync-config-target << 
295         may-sync-config :=                     << 
296     endif                                      << 
297 endif                                          << 
298                                                << 
299 need-compiler := $(may-sync-config)            << 
300                                                << 
301 ifneq ($(KBUILD_EXTMOD),)                      << 
302     may-sync-config :=                         << 
303 endif                                          << 
304                                                << 
305 ifeq ($(KBUILD_EXTMOD),)                          146 ifeq ($(KBUILD_EXTMOD),)
306     ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 147 _all: all
307         config-build := 1                      !! 148 else
308         ifneq ($(words $(MAKECMDGOALS)),1)     !! 149 _all: modules
309             mixed-build := 1                   << 
310         endif                                  << 
311     endif                                      << 
312 endif                                             150 endif
313                                                   151 
314 # We cannot build single targets and the other !! 152 srctree         := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
315 ifneq ($(filter $(single-targets), $(MAKECMDGO !! 153 objtree         := $(CURDIR)
316     single-build := 1                          !! 154 src             := $(srctree)
317     ifneq ($(filter-out $(single-targets), $(M !! 155 obj             := $(objtree)
318         mixed-build := 1                       << 
319     endif                                      << 
320 endif                                          << 
321                                                   156 
322 # For "make -j clean all", "make -j mrproper d !! 157 VPATH           := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL << 
324     ifneq ($(filter-out $(clean-targets),$(MAK << 
325         mixed-build := 1                       << 
326     endif                                      << 
327 endif                                          << 
328                                                   158 
329 # install and modules_install need also be pro !! 159 export srctree objtree VPATH
330 ifneq ($(filter install,$(MAKECMDGOALS)),)     << 
331     ifneq ($(filter modules_install,$(MAKECMDG << 
332         mixed-build := 1                       << 
333     endif                                      << 
334 endif                                          << 
335                                                   160 
336 ifdef mixed-build                              << 
337 # ============================================ << 
338 # We're called with mixed targets (*config and << 
339 # Handle them one by one.                      << 
340                                                   161 
341 PHONY += $(MAKECMDGOALS) __build_one_by_one    !! 162 # SUBARCH tells the usermode build what the underlying arch is.  That is set
342                                                !! 163 # first, and if a usermode build is happening, the "ARCH=um" on the command
343 $(MAKECMDGOALS): __build_one_by_one            !! 164 # line overrides the setting of ARCH below.  If a native build is happening,
344         @:                                     !! 165 # then ARCH is assigned, getting whatever value it gets normally, and 
345                                                !! 166 # SUBARCH is subsequently ignored.
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                                                   167 
361 include $(srctree)/scripts/subarch.include     !! 168 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
                                                   >> 169                                   -e s/sun4u/sparc64/ \
                                                   >> 170                                   -e s/arm.*/arm/ -e s/sa110/arm/ \
                                                   >> 171                                   -e s/s390x/s390/ -e s/parisc64/parisc/ \
                                                   >> 172                                   -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
                                                   >> 173                                   -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
362                                                   174 
363 # Cross compiling and selecting different set     175 # Cross compiling and selecting different set of gcc/bin-utils
364 # --------------------------------------------    176 # ---------------------------------------------------------------------------
365 #                                                 177 #
366 # When performing cross compilation for other     178 # When performing cross compilation for other architectures ARCH shall be set
367 # to the target architecture. (See arch/* for     179 # to the target architecture. (See arch/* for the possibilities).
368 # ARCH can be set during invocation of make:      180 # ARCH can be set during invocation of make:
369 # make ARCH=arm64                              !! 181 # make ARCH=ia64
370 # Another way is to have ARCH set in the envir    182 # Another way is to have ARCH set in the environment.
371 # The default ARCH is the host where make is e    183 # The default ARCH is the host where make is executed.
372                                                   184 
373 # CROSS_COMPILE specify the prefix used for al    185 # CROSS_COMPILE specify the prefix used for all executables used
374 # during compilation. Only gcc and related bin    186 # during compilation. Only gcc and related bin-utils executables
375 # are prefixed with $(CROSS_COMPILE).             187 # are prefixed with $(CROSS_COMPILE).
376 # CROSS_COMPILE can be set on the command line    188 # CROSS_COMPILE can be set on the command line
377 # make CROSS_COMPILE=aarch64-linux-gnu-        !! 189 # make CROSS_COMPILE=ia64-linux-
378 # Alternatively CROSS_COMPILE can be set in th    190 # Alternatively CROSS_COMPILE can be set in the environment.
                                                   >> 191 # A third alternative is to store a setting in .config so that plain
                                                   >> 192 # "make" in the configured kernel build directory always uses that.
379 # Default value for CROSS_COMPILE is not to pr    193 # Default value for CROSS_COMPILE is not to prefix executables
380 # Note: Some architectures assign CROSS_COMPIL    194 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
381 ARCH            ?= $(SUBARCH)                     195 ARCH            ?= $(SUBARCH)
                                                   >> 196 CROSS_COMPILE   ?= $(CONFIG_CROSS_COMPILE:"%"=%)
382                                                   197 
383 # Architecture as present in compile.h            198 # Architecture as present in compile.h
384 UTS_MACHINE     := $(ARCH)                        199 UTS_MACHINE     := $(ARCH)
385 SRCARCH         := $(ARCH)                        200 SRCARCH         := $(ARCH)
386                                                   201 
387 # Additional ARCH settings for x86                202 # Additional ARCH settings for x86
388 ifeq ($(ARCH),i386)                               203 ifeq ($(ARCH),i386)
389         SRCARCH := x86                            204         SRCARCH := x86
390 endif                                             205 endif
391 ifeq ($(ARCH),x86_64)                             206 ifeq ($(ARCH),x86_64)
392         SRCARCH := x86                            207         SRCARCH := x86
393 endif                                             208 endif
394                                                   209 
395 # Additional ARCH settings for sparc              210 # Additional ARCH settings for sparc
396 ifeq ($(ARCH),sparc32)                            211 ifeq ($(ARCH),sparc32)
397        SRCARCH := sparc                           212        SRCARCH := sparc
398 endif                                             213 endif
399 ifeq ($(ARCH),sparc64)                            214 ifeq ($(ARCH),sparc64)
400        SRCARCH := sparc                           215        SRCARCH := sparc
401 endif                                             216 endif
402                                                   217 
403 # Additional ARCH settings for parisc          !! 218 # Additional ARCH settings for sh
404 ifeq ($(ARCH),parisc64)                        !! 219 ifeq ($(ARCH),sh64)
405        SRCARCH := parisc                       !! 220        SRCARCH := sh
406 endif                                             221 endif
407                                                   222 
408 export cross_compiling :=                      !! 223 # Additional ARCH settings for tile
409 ifneq ($(SRCARCH),$(SUBARCH))                  !! 224 ifeq ($(ARCH),tilepro)
410 cross_compiling := 1                           !! 225        SRCARCH := tile
411 endif                                             226 endif
                                                   >> 227 ifeq ($(ARCH),tilegx)
                                                   >> 228        SRCARCH := tile
                                                   >> 229 endif
                                                   >> 230 
                                                   >> 231 # Where to locate arch specific headers
                                                   >> 232 hdr-arch  := $(SRCARCH)
412                                                   233 
413 KCONFIG_CONFIG  ?= .config                        234 KCONFIG_CONFIG  ?= .config
414 export KCONFIG_CONFIG                             235 export KCONFIG_CONFIG
415                                                   236 
416 # SHELL used by kbuild                            237 # SHELL used by kbuild
417 CONFIG_SHELL := sh                             !! 238 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
                                                   >> 239           else if [ -x /bin/bash ]; then echo /bin/bash; \
                                                   >> 240           else echo sh; fi ; fi)
                                                   >> 241 
                                                   >> 242 HOSTCC       = gcc
                                                   >> 243 HOSTCXX      = g++
                                                   >> 244 HOSTCFLAGS   = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89
                                                   >> 245 HOSTCXXFLAGS = -O2
418                                                   246 
419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS  !! 247 # Decide whether to build built-in, modular, or both.
420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG !! 248 # Normally, just do built-in.
421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d << 
422                                                   249 
423 ifneq ($(LLVM),)                               !! 250 KBUILD_MODULES :=
424 ifneq ($(filter %/,$(LLVM)),)                  !! 251 KBUILD_BUILTIN := 1
425 LLVM_PREFIX := $(LLVM)                         !! 252 
426 else ifneq ($(filter -%,$(LLVM)),)             !! 253 #       If we have only "make modules", don't compile built-in objects.
427 LLVM_SUFFIX := $(LLVM)                         !! 254 #       When we're building modules with modversions, we need to consider
                                                   >> 255 #       the built-in objects during the descend as well, in order to
                                                   >> 256 #       make sure the checksums are up to date before we record them.
                                                   >> 257 
                                                   >> 258 ifeq ($(MAKECMDGOALS),modules)
                                                   >> 259   KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
                                                   >> 260 endif
                                                   >> 261 
                                                   >> 262 #       If we have "make <whatever> modules", compile modules
                                                   >> 263 #       in addition to whatever we do anyway.
                                                   >> 264 #       Just "make" or "make all" shall build modules as well
                                                   >> 265 
                                                   >> 266 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
                                                   >> 267   KBUILD_MODULES := 1
                                                   >> 268 endif
                                                   >> 269 
                                                   >> 270 ifeq ($(MAKECMDGOALS),)
                                                   >> 271   KBUILD_MODULES := 1
428 endif                                             272 endif
429                                                   273 
430 HOSTCC  = $(LLVM_PREFIX)clang$(LLVM_SUFFIX)    !! 274 export KBUILD_MODULES KBUILD_BUILTIN
431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX)  !! 275 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
                                                   >> 276 
                                                   >> 277 # Beautify output
                                                   >> 278 # ---------------------------------------------------------------------------
                                                   >> 279 #
                                                   >> 280 # Normally, we echo the whole command before executing it. By making
                                                   >> 281 # that echo $($(quiet)$(cmd)), we now have the possibility to set
                                                   >> 282 # $(quiet) to choose other forms of output instead, e.g.
                                                   >> 283 #
                                                   >> 284 #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
                                                   >> 285 #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
                                                   >> 286 #
                                                   >> 287 # If $(quiet) is empty, the whole command will be printed.
                                                   >> 288 # If it is set to "quiet_", only the short version will be printed. 
                                                   >> 289 # If it is set to "silent_", nothing will be printed at all, since
                                                   >> 290 # the variable $(silent_cmd_cc_o_c) doesn't exist.
                                                   >> 291 #
                                                   >> 292 # A simple variant is to prefix commands with $(Q) - that's useful
                                                   >> 293 # for commands that shall be hidden in non-verbose mode.
                                                   >> 294 #
                                                   >> 295 #       $(Q)ln $@ :<
                                                   >> 296 #
                                                   >> 297 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
                                                   >> 298 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
                                                   >> 299 
                                                   >> 300 ifeq ($(KBUILD_VERBOSE),1)
                                                   >> 301   quiet =
                                                   >> 302   Q =
432 else                                              303 else
433 HOSTCC  = gcc                                  !! 304   quiet=quiet_
434 HOSTCXX = g++                                  !! 305   Q = @
                                                   >> 306 endif
                                                   >> 307 
                                                   >> 308 # If the user is running make -s (silent mode), suppress echoing of
                                                   >> 309 # commands
                                                   >> 310 
                                                   >> 311 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
                                                   >> 312   quiet=silent_
435 endif                                             313 endif
436 HOSTRUSTC = rustc                              << 
437 HOSTPKG_CONFIG  = pkg-config                   << 
438                                                   314 
439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 315 export quiet Q KBUILD_VERBOSE
440                          -O2 -fomit-frame-poin !! 316 
441 KBUILD_USERCFLAGS  := $(KBUILD_USERHOSTCFLAGS) !! 317 
442 KBUILD_USERLDFLAGS := $(USERLDFLAGS)           !! 318 # Look for make include files relative to root of kernel src
443                                                !! 319 MAKEFLAGS += --include-dir=$(srctree)
444 # These flags apply to all Rust code in the tr !! 320 
445 # host programs.                               !! 321 # We need some generic definitions (do not try to remake the file).
446 export rust_common_flags := --edition=2021 \   !! 322 $(srctree)/scripts/Kbuild.include: ;
447                             -Zbinary_dep_depin !! 323 include $(srctree)/scripts/Kbuild.include
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                                                   324 
471 # Make variables (CC, etc...)                     325 # Make variables (CC, etc...)
472 CPP             = $(CC) -E                     !! 326 
473 ifneq ($(LLVM),)                               !! 327 AS              = $(CROSS_COMPILE)as
474 CC              = $(LLVM_PREFIX)clang$(LLVM_SU << 
475 LD              = $(LLVM_PREFIX)ld.lld$(LLVM_S << 
476 AR              = $(LLVM_PREFIX)llvm-ar$(LLVM_ << 
477 NM              = $(LLVM_PREFIX)llvm-nm$(LLVM_ << 
478 OBJCOPY         = $(LLVM_PREFIX)llvm-objcopy$( << 
479 OBJDUMP         = $(LLVM_PREFIX)llvm-objdump$( << 
480 READELF         = $(LLVM_PREFIX)llvm-readelf$( << 
481 STRIP           = $(LLVM_PREFIX)llvm-strip$(LL << 
482 else                                           << 
483 CC              = $(CROSS_COMPILE)gcc          << 
484 LD              = $(CROSS_COMPILE)ld              328 LD              = $(CROSS_COMPILE)ld
                                                   >> 329 CC              = $(CROSS_COMPILE)gcc
                                                   >> 330 CPP             = $(CC) -E
485 AR              = $(CROSS_COMPILE)ar              331 AR              = $(CROSS_COMPILE)ar
486 NM              = $(CROSS_COMPILE)nm              332 NM              = $(CROSS_COMPILE)nm
                                                   >> 333 STRIP           = $(CROSS_COMPILE)strip
487 OBJCOPY         = $(CROSS_COMPILE)objcopy         334 OBJCOPY         = $(CROSS_COMPILE)objcopy
488 OBJDUMP         = $(CROSS_COMPILE)objdump         335 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                             336 AWK             = awk
                                                   >> 337 GENKSYMS        = scripts/genksyms/genksyms
502 INSTALLKERNEL  := installkernel                   338 INSTALLKERNEL  := installkernel
                                                   >> 339 DEPMOD          = /sbin/depmod
503 PERL            = perl                            340 PERL            = perl
504 PYTHON3         = python3                      << 
505 CHECK           = sparse                          341 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                                                   342 
515 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC    343 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
516                   -Wbitwise -Wno-return-void - !! 344                   -Wbitwise -Wno-return-void $(CF)
517 NOSTDINC_FLAGS :=                              << 
518 CFLAGS_MODULE   =                                 345 CFLAGS_MODULE   =
519 RUSTFLAGS_MODULE =                             << 
520 AFLAGS_MODULE   =                                 346 AFLAGS_MODULE   =
521 LDFLAGS_MODULE  =                                 347 LDFLAGS_MODULE  =
522 CFLAGS_KERNEL   =                                 348 CFLAGS_KERNEL   =
523 RUSTFLAGS_KERNEL =                             << 
524 AFLAGS_KERNEL   =                                 349 AFLAGS_KERNEL   =
525 LDFLAGS_vmlinux =                              !! 350 CFLAGS_GCOV     = -fprofile-arcs -ftest-coverage
                                                   >> 351 
526                                                   352 
527 # Use USERINCLUDE when you must reference the     353 # Use USERINCLUDE when you must reference the UAPI directories only.
528 USERINCLUDE    := \                               354 USERINCLUDE    := \
529                 -I$(srctree)/arch/$(SRCARCH)/i !! 355                 -I$(srctree)/arch/$(hdr-arch)/include/uapi \
530                 -I$(objtree)/arch/$(SRCARCH)/i !! 356                 -Iarch/$(hdr-arch)/include/generated/uapi \
531                 -I$(srctree)/include/uapi \       357                 -I$(srctree)/include/uapi \
532                 -I$(objtree)/include/generated !! 358                 -Iinclude/generated/uapi \
533                 -include $(srctree)/include/li << 
534                 -include $(srctree)/include/li    359                 -include $(srctree)/include/linux/kconfig.h
535                                                   360 
536 # Use LINUXINCLUDE when you must reference the    361 # Use LINUXINCLUDE when you must reference the include/ directory.
537 # Needed to be compatible with the O= option      362 # Needed to be compatible with the O= option
538 LINUXINCLUDE    := \                              363 LINUXINCLUDE    := \
539                 -I$(srctree)/arch/$(SRCARCH)/i !! 364                 -I$(srctree)/arch/$(hdr-arch)/include \
540                 -I$(objtree)/arch/$(SRCARCH)/i !! 365                 -Iarch/$(hdr-arch)/include/generated \
541                 $(if $(building_out_of_srctree !! 366                 $(if $(KBUILD_SRC), -I$(srctree)/include) \
542                 -I$(objtree)/include \         !! 367                 -Iinclude \
543                 $(USERINCLUDE)                    368                 $(USERINCLUDE)
544                                                   369 
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__                   370 KBUILD_CPPFLAGS := -D__KERNEL__
556 KBUILD_RUSTFLAGS := $(rust_common_flags) \     !! 371 
557                     -Cpanic=abort -Cembed-bitc !! 372 KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
558                     -Cforce-unwind-tables=n -C !! 373                    -fno-strict-aliasing -fno-common \
559                     -Csymbol-mangling-version= !! 374                    -Werror-implicit-function-declaration \
560                     -Crelocation-model=static  !! 375                    -Wno-format-security \
561                     -Zfunction-sections=n \    !! 376                    -fno-delete-null-pointer-checks \
562                     -Wclippy::float_arithmetic !! 377                    -std=gnu89
563                                                   378 
564 KBUILD_AFLAGS_KERNEL :=                           379 KBUILD_AFLAGS_KERNEL :=
565 KBUILD_CFLAGS_KERNEL :=                           380 KBUILD_CFLAGS_KERNEL :=
566 KBUILD_RUSTFLAGS_KERNEL :=                     !! 381 KBUILD_AFLAGS   := -D__ASSEMBLY__
567 KBUILD_AFLAGS_MODULE  := -DMODULE                 382 KBUILD_AFLAGS_MODULE  := -DMODULE
568 KBUILD_CFLAGS_MODULE  := -DMODULE                 383 KBUILD_CFLAGS_MODULE  := -DMODULE
569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE        !! 384 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
570 KBUILD_LDFLAGS_MODULE :=                       << 
571 KBUILD_LDFLAGS :=                              << 
572 CLANG_FLAGS :=                                 << 
573                                                << 
574 ifeq ($(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                                                   385 
582 ifdef RUST_LIB_SRC                             !! 386 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
583         export RUST_LIB_SRC                    !! 387 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
584 endif                                          !! 388 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
585                                                << 
586 # Allows the usage of unstable features in sta << 
587 export RUSTC_BOOTSTRAP := 1                    << 
588                                                   389 
589 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K !! 390 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
590 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q !! 391 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
591 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS          !! 392 export CPP AR NM STRIP OBJCOPY OBJDUMP
592 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF !! 393 export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
593 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ !! 394 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
594 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD     << 
595 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS  << 
596 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS    << 
597                                                   395 
598 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC !! 396 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
599 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU !! 397 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
600 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF << 
601 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU    398 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
602 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 399 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
603 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 400 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
                                                   >> 401 export KBUILD_ARFLAGS
                                                   >> 402 
                                                   >> 403 # When compiling out-of-tree modules, put MODVERDIR in the module
                                                   >> 404 # tree rather than in the kernel tree. The kernel tree might
                                                   >> 405 # even be read-only.
                                                   >> 406 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
604                                                   407 
605 # Files to ignore in find ... statements          408 # Files to ignore in find ... statements
606                                                   409 
607 export RCS_FIND_IGNORE := \( -name SCCS -o -na !! 410 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \
608                           -name CVS -o -name . !! 411                    -o -name .pc -o -name .hg -o -name .git \) -prune -o
609                           -prune -o            !! 412 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
                                                   >> 413                          --exclude CVS --exclude .pc --exclude .hg --exclude .git
610                                                   414 
611 # ============================================    415 # ===========================================================================
612 # Rules shared between *config targets and bui    416 # Rules shared between *config targets and build targets
613                                                   417 
614 # Basic helpers built in scripts/basic/        !! 418 # Basic helpers built in scripts/
615 PHONY += scripts_basic                            419 PHONY += scripts_basic
616 scripts_basic:                                    420 scripts_basic:
617         $(Q)$(MAKE) $(build)=scripts/basic        421         $(Q)$(MAKE) $(build)=scripts/basic
                                                   >> 422         $(Q)rm -f .tmp_quiet_recordmcount
                                                   >> 423 
                                                   >> 424 # To avoid any implicit rule to kick in, define an empty command.
                                                   >> 425 scripts/basic/%: scripts_basic ;
618                                                   426 
619 PHONY += outputmakefile                           427 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    428 # outputmakefile generates a Makefile in the output directory, if using a
623 # separate output directory. This allows conve    429 # separate output directory. This allows convenient use of make in the
624 # output directory.                               430 # 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:                                   431 outputmakefile:
635         @if [ -f $(srctree)/.config -o \       !! 432 ifneq ($(KBUILD_SRC),)
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             433         $(Q)ln -fsn $(srctree) source
645         $(call cmd,makefile)                   !! 434         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
646         $(Q)test -e .gitignore || \            !! 435             $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
647         { echo "# this is build directory, ign << 
648 endif                                             436 endif
649                                                   437 
650 # The expansion should be delayed until arch/$ !! 438 # Support for using generic headers in asm-generic
651 # Some architectures define CROSS_COMPILE in a !! 439 PHONY += asm-generic
652 # CC_VERSION_TEXT is referenced from Kconfig ( !! 440 asm-generic:
653 # and from include/config/auto.conf.cmd to det !! 441         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
654 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 442                     src=asm obj=arch/$(SRCARCH)/include/generated/asm
                                                   >> 443         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
                                                   >> 444                     src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
                                                   >> 445 
                                                   >> 446 # To make sure we do not include .config for any of the *config targets
                                                   >> 447 # catch them early, and hand them over to scripts/kconfig/Makefile
                                                   >> 448 # It is allowed to specify more targets when calling make, including
                                                   >> 449 # mixing *config targets and build targets.
                                                   >> 450 # For example 'make oldconfig all'.
                                                   >> 451 # Detect when mixed targets is specified, and make a second invocation
                                                   >> 452 # of make so .config is not included in this case either (for *config).
                                                   >> 453 
                                                   >> 454 version_h := include/generated/uapi/linux/version.h
                                                   >> 455 
                                                   >> 456 no-dot-config-targets := clean mrproper distclean \
                                                   >> 457                          cscope gtags TAGS tags help %docs check% coccicheck \
                                                   >> 458                          $(version_h) headers_% archheaders archscripts \
                                                   >> 459                          kernelversion %src-pkg
                                                   >> 460 
                                                   >> 461 config-targets := 0
                                                   >> 462 mixed-targets  := 0
                                                   >> 463 dot-config     := 1
655                                                   464 
656 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), !! 465 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
657 include $(srctree)/scripts/Makefile.clang      !! 466         ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
                                                   >> 467                 dot-config := 0
                                                   >> 468         endif
658 endif                                             469 endif
659                                                   470 
660 # Include this also for config targets because !! 471 ifeq ($(KBUILD_EXTMOD),)
661 # cc-cross-prefix to determine CROSS_COMPILE.  !! 472         ifneq ($(filter config %config,$(MAKECMDGOALS)),)
662 ifdef need-compiler                            !! 473                 config-targets := 1
663 include $(srctree)/scripts/Makefile.compiler   !! 474                 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
                                                   >> 475                         mixed-targets := 1
                                                   >> 476                 endif
                                                   >> 477         endif
664 endif                                             478 endif
665                                                   479 
666 ifdef config-build                             !! 480 ifeq ($(mixed-targets),1)
                                                   >> 481 # ===========================================================================
                                                   >> 482 # We're called with mixed targets (*config and build targets).
                                                   >> 483 # Handle them one by one.
                                                   >> 484 
                                                   >> 485 %:: FORCE
                                                   >> 486         $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
                                                   >> 487 
                                                   >> 488 else
                                                   >> 489 ifeq ($(config-targets),1)
667 # ============================================    490 # ===========================================================================
668 # *config targets only - make sure prerequisit    491 # *config targets only - make sure prerequisites are updated, and descend
669 # in scripts/kconfig to make the *config targe    492 # in scripts/kconfig to make the *config target
670                                                   493 
671 # Read arch-specific Makefile to set KBUILD_DE !! 494 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
672 # KBUILD_DEFCONFIG may point out an alternativ    495 # KBUILD_DEFCONFIG may point out an alternative default configuration
673 # used for 'make defconfig'                       496 # used for 'make defconfig'
674 include $(srctree)/arch/$(SRCARCH)/Makefile       497 include $(srctree)/arch/$(SRCARCH)/Makefile
675 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 498 export KBUILD_DEFCONFIG KBUILD_KCONFIG
676                                                   499 
677 config: outputmakefile scripts_basic FORCE     !! 500 config: scripts_basic outputmakefile FORCE
                                                   >> 501         $(Q)mkdir -p include/linux include/config
678         $(Q)$(MAKE) $(build)=scripts/kconfig $    502         $(Q)$(MAKE) $(build)=scripts/kconfig $@
679                                                   503 
680 %config: outputmakefile scripts_basic FORCE    !! 504 %config: scripts_basic outputmakefile FORCE
                                                   >> 505         $(Q)mkdir -p include/linux include/config
681         $(Q)$(MAKE) $(build)=scripts/kconfig $    506         $(Q)$(MAKE) $(build)=scripts/kconfig $@
682                                                   507 
683 else #!config-build                            !! 508 else
684 # ============================================    509 # ===========================================================================
685 # Build targets only - this includes vmlinux,  !! 510 # Build targets only - this includes vmlinux, arch specific targets, clean
686 # targets and others. In general all targets e    511 # targets and others. In general all targets except *config targets.
687                                                   512 
688 # If building an external module we do not car << 
689 # but instead __all depend on modules          << 
690 PHONY += all                                   << 
691 ifeq ($(KBUILD_EXTMOD),)                          513 ifeq ($(KBUILD_EXTMOD),)
692 __all: all                                     !! 514 # Additional helpers built in scripts/
693 else                                           !! 515 # Carefully list dependencies so we do not try to build scripts twice
694 __all: modules                                 !! 516 # in parallel
695 endif                                          !! 517 PHONY += scripts
696                                                !! 518 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
697 targets :=                                     !! 519          asm-generic
698                                                !! 520         $(Q)$(MAKE) $(build)=$(@)
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 ($(MAKECMDGOALS),)                        << 
719   KBUILD_MODULES := 1                          << 
720 endif                                          << 
721                                                << 
722 export KBUILD_MODULES KBUILD_BUILTIN           << 
723                                                << 
724 ifdef need-config                              << 
725 include include/config/auto.conf               << 
726 endif                                          << 
727                                                   521 
728 ifeq ($(KBUILD_EXTMOD),)                       << 
729 # Objects we will link into vmlinux / subdirs     522 # Objects we will link into vmlinux / subdirs we need to visit
730 core-y          :=                             !! 523 init-y          := init/
731 drivers-y       :=                             !! 524 drivers-y       := drivers/ sound/ firmware/
                                                   >> 525 net-y           := net/
732 libs-y          := lib/                           526 libs-y          := lib/
                                                   >> 527 core-y          := usr/
733 endif # KBUILD_EXTMOD                             528 endif # KBUILD_EXTMOD
734                                                   529 
735 # The all: target is the default when no targe !! 530 ifeq ($(dot-config),1)
736 # command line.                                !! 531 # Read in config
737 # This allow a user to issue only 'make' to bu !! 532 -include include/config/auto.conf
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                                                   533 
752 include $(srctree)/arch/$(SRCARCH)/Makefile    !! 534 ifeq ($(KBUILD_EXTMOD),)
753                                                !! 535 # Read in dependencies to all Kconfig* files, make sure to run
754 ifdef need-config                              !! 536 # oldconfig if changes are detected.
755 ifdef may-sync-config                          !! 537 -include include/config/auto.conf.cmd
756 # Read in dependencies to all Kconfig* files,  !! 538 
757 # changes are detected. This should be include !! 539 # To avoid any implicit rule to kick in, define an empty command
758 # because some architectures define CROSS_COMP !! 540 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
759 include include/config/auto.conf.cmd           !! 541 
760                                                !! 542 # If .config is newer than include/config/auto.conf, someone tinkered
761 $(KCONFIG_CONFIG):                             !! 543 # with it and forgot to run make oldconfig.
762         @echo >&2 '***'                        !! 544 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
763         @echo >&2 '*** Configuration file "$@" !! 545 # we execute the config step to be sure to catch updated Kconfig files
764         @echo >&2 '***'                        !! 546 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
765         @echo >&2 '*** Please run some configu !! 547         $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
766         @echo >&2 '*** "make menuconfig" or "m !! 548 else
767         @echo >&2 '***'                        !! 549 # external modules needs include/generated/autoconf.h and include/config/auto.conf
768         @/bin/false                            !! 550 # but do not care if they are up-to-date. Use auto.conf to trigger the test
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                 551 PHONY += include/config/auto.conf
788                                                   552 
789 include/config/auto.conf:                         553 include/config/auto.conf:
790         @test -e include/generated/autoconf.h  !! 554         $(Q)test -e include/generated/autoconf.h -a -e $@ || (          \
791         echo >&2;                                 555         echo >&2;                                                       \
792         echo >&2 "  ERROR: Kernel configuratio    556         echo >&2 "  ERROR: Kernel configuration is invalid.";           \
793         echo >&2 "         include/generated/a    557         echo >&2 "         include/generated/autoconf.h or $@ are missing.";\
794         echo >&2 "         Run 'make oldconfig    558         echo >&2 "         Run 'make oldconfig && make prepare' on kernel src to fix it.";      \
795         echo >&2 ;                                559         echo >&2 ;                                                      \
796         /bin/false)                               560         /bin/false)
797                                                   561 
798 endif # may-sync-config                        !! 562 endif # KBUILD_EXTMOD
799 endif # need-config                            !! 563 
                                                   >> 564 else
                                                   >> 565 # Dummy target needed, because used as prerequisite
                                                   >> 566 include/config/auto.conf: ;
                                                   >> 567 endif # $(dot-config)
800                                                   568 
801 KBUILD_CFLAGS   += -fno-delete-null-pointer-ch !! 569 # The all: target is the default when no target is given on the
                                                   >> 570 # command line.
                                                   >> 571 # This allow a user to issue only 'make' to build a kernel including modules
                                                   >> 572 # Defaults to vmlinux, but the arch makefile usually adds further targets
                                                   >> 573 all: vmlinux
802                                                   574 
803 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE       !! 575 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
804 KBUILD_CFLAGS += -O2                           !! 576 KBUILD_CFLAGS   += -Os $(call cc-disable-warning,maybe-uninitialized,)
805 KBUILD_RUSTFLAGS += -Copt-level=2              !! 577 else
806 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE         !! 578 KBUILD_CFLAGS   += -O2
807 KBUILD_CFLAGS += -Os                           << 
808 KBUILD_RUSTFLAGS += -Copt-level=s              << 
809 endif                                          << 
810                                                << 
811 # Always set `debug-assertions` and `overflow- << 
812 # depends on `opt-level` and `debug-assertions << 
813 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(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                                             579 endif
823                                                   580 
                                                   >> 581 include $(srctree)/arch/$(SRCARCH)/Makefile
                                                   >> 582 
824 ifdef CONFIG_READABLE_ASM                         583 ifdef CONFIG_READABLE_ASM
825 # Disable optimizations that make assembler li    584 # Disable optimizations that make assembler listings hard to read.
826 # reorder blocks reorders the control in the f    585 # reorder blocks reorders the control in the function
827 # ipa clone creates specialized cloned functio    586 # ipa clone creates specialized cloned functions
828 # partial inlining inlines only parts of funct    587 # partial inlining inlines only parts of functions
829 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 588 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
                                                   >> 589                  $(call cc-option,-fno-ipa-cp-clone,) \
                                                   >> 590                  $(call cc-option,-fno-partial-inlining)
830 endif                                             591 endif
831                                                   592 
832 stackp-flags-y                                 !! 593 ifneq ($(CONFIG_FRAME_WARN),0)
833 stackp-flags-$(CONFIG_STACKPROTECTOR)          !! 594 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
834 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG)   !! 595 endif
835                                                   596 
836 KBUILD_CFLAGS += $(stackp-flags-y)             !! 597 # Force gcc to behave correct even for buggy distributions
                                                   >> 598 ifndef CONFIG_CC_STACKPROTECTOR
                                                   >> 599 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
                                                   >> 600 endif
837                                                   601 
838 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 602 # This warning generated too much noise in a regular build.
839 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y)      !! 603 # Use make W=1 to enable this warning (see scripts/Makefile.build)
                                                   >> 604 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
840                                                   605 
841 ifdef CONFIG_FRAME_POINTER                        606 ifdef CONFIG_FRAME_POINTER
842 KBUILD_CFLAGS   += -fno-omit-frame-pointer -fn    607 KBUILD_CFLAGS   += -fno-omit-frame-pointer -fno-optimize-sibling-calls
843 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y   << 
844 else                                              608 else
845 # Some targets (ARM with Thumb2, for example),    609 # Some targets (ARM with Thumb2, for example), can't be built with frame
846 # pointers.  For those, we don't have FUNCTION    610 # pointers.  For those, we don't have FUNCTION_TRACER automatically
847 # select FRAME_POINTER.  However, FUNCTION_TRA    611 # select FRAME_POINTER.  However, FUNCTION_TRACER adds -pg, and this is
848 # incompatible with -fomit-frame-pointer with     612 # incompatible with -fomit-frame-pointer with current GCC, so we don't use
849 # -fomit-frame-pointer with FUNCTION_TRACER.      613 # -fomit-frame-pointer with FUNCTION_TRACER.
850 # In the Rust target specification, "frame-poi << 
851 # to "may-omit".                               << 
852 ifndef CONFIG_FUNCTION_TRACER                     614 ifndef CONFIG_FUNCTION_TRACER
853 KBUILD_CFLAGS   += -fomit-frame-pointer           615 KBUILD_CFLAGS   += -fomit-frame-pointer
854 endif                                             616 endif
855 endif                                             617 endif
856                                                   618 
857 # Initialize all stack variables with a 0xAA p !! 619 KBUILD_CFLAGS   += $(call cc-option, -fno-var-tracking-assignments)
858 ifdef CONFIG_INIT_STACK_ALL_PATTERN            << 
859 KBUILD_CFLAGS   += -ftrivial-auto-var-init=pat << 
860 endif                                          << 
861                                                   620 
862 # Initialize all stack variables with a zero v !! 621 ifdef CONFIG_DEBUG_INFO
863 ifdef CONFIG_INIT_STACK_ALL_ZERO               !! 622 KBUILD_CFLAGS   += -g
864 KBUILD_CFLAGS   += -ftrivial-auto-var-init=zer !! 623 KBUILD_AFLAGS   += -gdwarf-2
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                                             624 endif
872                                                   625 
873 # While VLAs have been removed, GCC produces u !! 626 ifdef CONFIG_DEBUG_INFO_REDUCED
874 # for the randomize_kstack_offset feature. Dis !! 627 KBUILD_CFLAGS   += $(call cc-option, -femit-struct-debug-baseonly) \
875 KBUILD_CFLAGS   += $(call cc-option, -fno-stac !! 628                    $(call cc-option,-fno-var-tracking)
876                                                << 
877 # Clear used registers at func exit (to reduce << 
878 ifdef CONFIG_ZERO_CALL_USED_REGS               << 
879 KBUILD_CFLAGS   += -fzero-call-used-regs=used- << 
880 endif                                             629 endif
881                                                   630 
882 ifdef CONFIG_FUNCTION_TRACER                      631 ifdef CONFIG_FUNCTION_TRACER
883 ifdef CONFIG_FTRACE_MCOUNT_USE_CC              << 
884   CC_FLAGS_FTRACE       += -mrecord-mcount     << 
885   ifdef CONFIG_HAVE_NOP_MCOUNT                 << 
886     ifeq ($(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                          632 ifdef CONFIG_HAVE_FENTRY
904   # s390-linux-gnu-gcc did not support -mfentr !! 633 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
905   ifeq ($(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                                             634 endif
919                                                !! 635 KBUILD_CFLAGS   += -pg $(CC_USING_FENTRY)
920 # `rustc`'s `-Zfunction-sections` applies to d !! 636 KBUILD_AFLAGS   += $(CC_USING_FENTRY)
921 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION     !! 637 ifdef CONFIG_DYNAMIC_FTRACE
922 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f !! 638         ifdef CONFIG_HAVE_C_RECORDMCOUNT
923 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections !! 639                 BUILD_C_RECORDMCOUNT := y
924 LDFLAGS_vmlinux += --gc-sections               !! 640                 export BUILD_C_RECORDMCOUNT
925 endif                                          !! 641         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                                             642 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                                             643 endif
958                                                   644 
959 # Architectures can define flags to add/remove !! 645 # We trigger additional mismatches with less inlining
960 CC_FLAGS_FPU    += -D_LINUX_FPU_COMPILATION_UN !! 646 ifdef CONFIG_DEBUG_SECTION_MISMATCH
961 export CC_FLAGS_FPU                            !! 647 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
962 export CC_FLAGS_NO_FPU                         << 
963                                                << 
964 ifneq ($(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                                             648 endif
974                                                   649 
975 # arch Makefile may override CC so keep this a    650 # arch Makefile may override CC so keep this after arch Makefile is included
976 NOSTDINC_FLAGS += -nostdinc                    !! 651 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
                                                   >> 652 CHECKFLAGS     += $(NOSTDINC_FLAGS)
977                                                   653 
978 # To gain proper coverage for CONFIG_UBSAN_BOU !! 654 # warn about C99 declaration after statement
979 # the kernel uses only C99 flexible arrays for !! 655 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
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                                                   656 
988 # disable invalid "can't wrap" optimizations f !! 657 # disable pointer signed / unsigned warnings in gcc 4.0
989 KBUILD_CFLAGS   += -fno-strict-overflow        !! 658 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
990                                                   659 
991 # Make sure -fstack-check isn't enabled (like  !! 660 # disable invalid "can't wrap" optimizations for signed / pointers
992 KBUILD_CFLAGS  += -fno-stack-check             !! 661 KBUILD_CFLAGS   += $(call cc-option,-fno-strict-overflow)
993                                                   662 
994 # conserve stack if available                     663 # conserve stack if available
995 ifdef CONFIG_CC_IS_GCC                         !! 664 KBUILD_CFLAGS   += $(call cc-option,-fconserve-stack)
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                                                  665 
1002 # include additional Makefiles when needed    !! 666 # use the deterministic mode of AR if available
1003 include-y                       := scripts/Ma !! 667 KBUILD_ARFLAGS := $(call ar-option,D)
1004 include-$(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                                                  668 
1020 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS  !! 669 # check for 'asm goto'
1021 KBUILD_CPPFLAGS += $(KCPPFLAGS)               !! 670 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
1022 KBUILD_AFLAGS   += $(KAFLAGS)                 !! 671         KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
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  += $(call ld-option,--no-warn << 
1032 endif                                            672 endif
1033                                                  673 
1034 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)             !! 674 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
1035 LDFLAGS_vmlinux += -X                         !! 675 KBUILD_CPPFLAGS += $(KCPPFLAGS)
1036 endif                                         !! 676 KBUILD_AFLAGS += $(KAFLAGS)
                                                   >> 677 KBUILD_CFLAGS += $(KCFLAGS)
1037                                                  678 
1038 ifeq ($(CONFIG_RELR),y)                       !! 679 # Use --build-id when available.
1039 # ld.lld before 15 did not support -z pack-re !! 680 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
1040 LDFLAGS_vmlinux += $(call ld-option,--pack-dy !! 681                               $(call cc-ldoption, -Wl$(comma)--build-id,))
1041 endif                                         !! 682 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
                                                   >> 683 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
1042                                                  684 
1043 # We never want expected sections to be place !! 685 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
1044 # linker. All sections should be explicitly n !! 686 LDFLAGS_vmlinux += $(call ld-option, -X,)
1045 ifdef CONFIG_LD_ORPHAN_WARN                   << 
1046 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG << 
1047 endif                                            687 endif
1048                                                  688 
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 $(CONFIG_64BIT),-m64,-m32) << 
1061                                               << 
1062 # Default kernel image to build when no speci    689 # Default kernel image to build when no specific target is given.
1063 # KBUILD_IMAGE may be overruled on the comman    690 # KBUILD_IMAGE may be overruled on the command line or
1064 # set in the environment                         691 # set in the environment
1065 # Also any assignments in arch/$(ARCH)/Makefi    692 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
1066 # this default value                             693 # this default value
1067 export KBUILD_IMAGE ?= vmlinux                   694 export KBUILD_IMAGE ?= vmlinux
1068                                                  695 
1069 #                                                696 #
1070 # INSTALL_PATH specifies where to place the u    697 # INSTALL_PATH specifies where to place the updated kernel and system map
1071 # images. Default is /boot, but you can set i    698 # images. Default is /boot, but you can set it to other values
1072 export  INSTALL_PATH ?= /boot                    699 export  INSTALL_PATH ?= /boot
1073                                                  700 
1074 #                                                701 #
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    702 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
1083 # relocations required by build roots.  This     703 # relocations required by build roots.  This is not defined in the
1084 # makefile but the argument can be passed to     704 # makefile but the argument can be passed to make if needed.
1085 #                                                705 #
1086                                                  706 
1087 MODLIB  = $(INSTALL_MOD_PATH)/lib/modules/$(K    707 MODLIB  = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
1088 export MODLIB                                    708 export MODLIB
1089                                                  709 
1090 PHONY += prepare0                             !! 710 #
1091                                               !! 711 #  INSTALL_MOD_STRIP, if defined, will cause modules to be
1092 export extmod_prefix = $(if $(KBUILD_EXTMOD), !! 712 #  stripped after they are installed.  If INSTALL_MOD_STRIP is '1', then
1093 export MODORDER := $(extmod_prefix)modules.or !! 713 #  the default option --strip-debug will be used.  Otherwise,
1094 export MODULES_NSDEPS := $(extmod_prefix)modu !! 714 #  INSTALL_MOD_STRIP value will be used as the options to the strip command.
                                                   >> 715 
                                                   >> 716 ifdef INSTALL_MOD_STRIP
                                                   >> 717 ifeq ($(INSTALL_MOD_STRIP),1)
                                                   >> 718 mod_strip_cmd = $(STRIP) --strip-debug
                                                   >> 719 else
                                                   >> 720 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
                                                   >> 721 endif # INSTALL_MOD_STRIP=1
                                                   >> 722 else
                                                   >> 723 mod_strip_cmd = true
                                                   >> 724 endif # INSTALL_MOD_STRIP
                                                   >> 725 export mod_strip_cmd
1095                                                  726 
1096 ifeq ($(KBUILD_EXTMOD),)                      << 
1097                                                  727 
1098 build-dir       := .                          !! 728 ifdef CONFIG_MODULE_SIG_ALL
1099 clean-dirs      := $(sort . Documentation \   !! 729 MODSECKEY = ./signing_key.priv
1100                      $(patsubst %/,%,$(filter !! 730 MODPUBKEY = ./signing_key.x509
1101                         $(drivers-) $(libs-)) !! 731 export MODPUBKEY
1102                                               !! 732 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY)
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                                             733 else
1113 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 734 mod_sign_cmd = true
1114 endif                                            735 endif
                                                   >> 736 export mod_sign_cmd
1115                                                  737 
1116 export KBUILD_VMLINUX_LIBS                    << 
1117 export KBUILD_LDS          := arch/$(SRCARCH) << 
1118                                                  738 
1119 ifdef CONFIG_TRIM_UNUSED_KSYMS                !! 739 ifeq ($(KBUILD_EXTMOD),)
1120 # For the kernel to actually contain only the !! 740 core-y          += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
1121 # we have to build modules as well to determi << 
1122 KBUILD_MODULES := 1                           << 
1123 endif                                         << 
1124                                                  741 
1125 # '$(AR) mPi' needs 'T' to workaround the bug !! 742 vmlinux-dirs    := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
1126 quiet_cmd_ar_vmlinux.a = AR      $@           !! 743                      $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
1127       cmd_ar_vmlinux.a = \                    !! 744                      $(net-y) $(net-m) $(libs-y) $(libs-m)))
1128         rm -f $@; \                           !! 745 
1129         $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS !! 746 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
1130         $(AR) mPiT $$($(AR) t $@ | sed -n 1p) !! 747                      $(init-n) $(init-) \
1131                                               !! 748                      $(core-n) $(core-) $(drivers-n) $(drivers-) \
1132 targets += vmlinux.a                          !! 749                      $(net-n)  $(net-)  $(libs-n)    $(libs-))))
1133 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea !! 750 
1134         $(call if_changed,ar_vmlinux.a)       !! 751 init-y          := $(patsubst %/, %/built-in.o, $(init-y))
1135                                               !! 752 core-y          := $(patsubst %/, %/built-in.o, $(core-y))
1136 PHONY += vmlinux_o                            !! 753 drivers-y       := $(patsubst %/, %/built-in.o, $(drivers-y))
1137 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS)   !! 754 net-y           := $(patsubst %/, %/built-in.o, $(net-y))
1138         $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 755 libs-y1         := $(patsubst %/, %/lib.a, $(libs-y))
                                                   >> 756 libs-y2         := $(patsubst %/, %/built-in.o, $(libs-y))
                                                   >> 757 libs-y          := $(libs-y1) $(libs-y2)
1139                                                  758 
1140 vmlinux.o modules.builtin.modinfo modules.bui !! 759 # Externally visible symbols (used by link-vmlinux.sh)
1141         @:                                    !! 760 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
                                                   >> 761 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
                                                   >> 762 export KBUILD_LDS          := arch/$(SRCARCH)/kernel/vmlinux.lds
                                                   >> 763 export LDFLAGS_vmlinux
                                                   >> 764 # used by scripts/pacmage/Makefile
                                                   >> 765 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt)
1142                                                  766 
1143 PHONY += vmlinux                              !! 767 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
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                                                  768 
1159 # The actual objects are generated when desce !! 769 # Final link of vmlinux
1160 # make sure no implicit rule kicks in         !! 770       cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
1161 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 771 quiet_cmd_link-vmlinux = LINK    $@
1162                                                  772 
1163 ifeq ($(origin KERNELRELEASE),file)           !! 773 # Include targets which we want to
1164 filechk_kernel.release = $(srctree)/scripts/s !! 774 # execute if the rest of the kernel build went well.
1165 else                                          !! 775 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
1166 filechk_kernel.release = echo $(KERNELRELEASE !! 776 ifdef CONFIG_HEADERS_CHECK
                                                   >> 777         $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
                                                   >> 778 endif
                                                   >> 779 ifdef CONFIG_SAMPLES
                                                   >> 780         $(Q)$(MAKE) $(build)=samples
1167 endif                                            781 endif
                                                   >> 782 ifdef CONFIG_BUILD_DOCSRC
                                                   >> 783         $(Q)$(MAKE) $(build)=Documentation
                                                   >> 784 endif
                                                   >> 785         +$(call if_changed,link-vmlinux)
1168                                                  786 
1169 # Store (new) KERNELRELEASE string in include !! 787 # The actual objects are generated when descending, 
1170 include/config/kernel.release: FORCE          !! 788 # make sure no implicit rule kicks in
1171         $(call filechk,kernel.release)        !! 789 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
                                                   >> 790 
                                                   >> 791 # Handle descending into subdirectories listed in $(vmlinux-dirs)
                                                   >> 792 # Preset locale variables to speed up the build process. Limit locale
                                                   >> 793 # tweaks to this spot to avoid wrong language settings when running
                                                   >> 794 # make menuconfig etc.
                                                   >> 795 # Error messages still appears in the original language
                                                   >> 796 
                                                   >> 797 PHONY += $(vmlinux-dirs)
                                                   >> 798 $(vmlinux-dirs): prepare scripts
                                                   >> 799         $(Q)$(MAKE) $(build)=$@
                                                   >> 800 
                                                   >> 801 # Store (new) KERNELRELASE string in include/config/kernel.release
                                                   >> 802 include/config/kernel.release: include/config/auto.conf FORCE
                                                   >> 803         $(Q)rm -f $@
                                                   >> 804         $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@
1172                                                  805 
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                                                  806 
1180 # Things we need to do before we recursively     807 # Things we need to do before we recursively start building the kernel
1181 # or the modules are listed in "prepare".        808 # or the modules are listed in "prepare".
1182 # A multi level approach is used. prepareN is    809 # A multi level approach is used. prepareN is processed before prepareN-1.
1183 # archprepare is used in arch Makefiles and w    810 # archprepare is used in arch Makefiles and when processed asm symlink,
1184 # version.h and scripts_basic is processed /     811 # version.h and scripts_basic is processed / created.
1185                                                  812 
1186 PHONY += prepare archprepare                  !! 813 # Listed in dependency order
                                                   >> 814 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1187                                                  815 
1188 archprepare: outputmakefile archheaders archs !! 816 # prepare3 is used to check if we are building in a separate output directory,
1189         asm-generic $(version_h) include/gene !! 817 # and if so do:
1190         include/generated/compile.h include/g !! 818 # 1) Check that make has not been executed in the kernel src $(srctree)
1191                                               !! 819 prepare3: include/config/kernel.release
1192 prepare0: archprepare                         !! 820 ifneq ($(KBUILD_SRC),)
1193         $(Q)$(MAKE) $(build)=scripts/mod      !! 821         @$(kecho) '  Using $(srctree) as source for kernel'
1194         $(Q)$(MAKE) $(build)=. prepare        !! 822         $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
                                                   >> 823                 echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
                                                   >> 824                 echo >&2 "  in the '$(srctree)' directory.";\
                                                   >> 825                 /bin/false; \
                                                   >> 826         fi;
                                                   >> 827 endif
                                                   >> 828 
                                                   >> 829 # prepare2 creates a makefile if using a separate output directory
                                                   >> 830 prepare2: prepare3 outputmakefile asm-generic
                                                   >> 831 
                                                   >> 832 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
                                                   >> 833                    include/config/auto.conf
                                                   >> 834         $(cmd_crmodverdir)
1195                                                  835 
1196 # All the preparing..                         !! 836 archprepare: archheaders archscripts prepare1 scripts_basic
1197 prepare: prepare0                             << 
1198 ifdef CONFIG_RUST                             << 
1199         +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 
1200         $(Q)$(MAKE) $(build)=rust             << 
1201 endif                                         << 
1202                                                  837 
1203 PHONY += remove-stale-files                   !! 838 prepare0: archprepare FORCE
1204 remove-stale-files:                           !! 839         $(Q)$(MAKE) $(build)=.
1205         $(Q)$(srctree)/scripts/remove-stale-f << 
1206                                                  840 
1207 # Support for using generic headers in asm-ge !! 841 # All the preparing..
1208 asm-generic := -f $(srctree)/scripts/Makefile !! 842 prepare: prepare0
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                                                  843 
1218 # Generate some files                            844 # Generate some files
1219 # -------------------------------------------    845 # ---------------------------------------------------------------------------
1220                                                  846 
1221 # KERNELRELEASE can change from a few differe    847 # KERNELRELEASE can change from a few different places, meaning version.h
1222 # needs to be updated, so this check is force    848 # needs to be updated, so this check is forced on all builds
1223                                                  849 
1224 uts_len := 64                                    850 uts_len := 64
1225 define filechk_utsrelease.h                      851 define filechk_utsrelease.h
1226         if [ `echo -n "$(KERNELRELEASE)" | wc    852         if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
1227           echo '"$(KERNELRELEASE)" exceeds $(    853           echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2;    \
1228           exit 1;                                854           exit 1;                                                         \
1229         fi;                                      855         fi;                                                               \
1230         echo \#define UTS_RELEASE \"$(KERNELR !! 856         (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1231 endef                                            857 endef
1232                                                  858 
1233 define filechk_version.h                         859 define filechk_version.h
1234         if [ $(SUBLEVEL) -gt 255 ]; then      !! 860         (echo \#define LINUX_VERSION_CODE $(shell                         \
1235                 echo \#define LINUX_VERSION_C !! 861         expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
1236                 expr $(VERSION) \* 65536 + $( !! 862         echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
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                                            863 endef
1247                                                  864 
1248 $(version_h): private PATCHLEVEL := $(or $(PA !! 865 $(version_h): $(srctree)/Makefile FORCE
1249 $(version_h): private SUBLEVEL := $(or $(SUBL << 
1250 $(version_h): FORCE                           << 
1251         $(call filechk,version.h)                866         $(call filechk,version.h)
1252                                                  867 
1253 include/generated/utsrelease.h: include/confi    868 include/generated/utsrelease.h: include/config/kernel.release FORCE
1254         $(call filechk,utsrelease.h)             869         $(call filechk,utsrelease.h)
1255                                                  870 
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                               871 PHONY += headerdep
1263 headerdep:                                       872 headerdep:
1264         $(Q)find $(srctree)/include/ -name '*    873         $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
1265         $(srctree)/scripts/headerdep.pl -I$(s    874         $(srctree)/scripts/headerdep.pl -I$(srctree)/include
1266                                                  875 
1267 # -------------------------------------------    876 # ---------------------------------------------------------------------------
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                                                  877 
1309 quiet_cmd_install = INSTALL $(INSTALL_PATH)   !! 878 PHONY += depend dep
1310       cmd_install = unset sub_make_done; $(sr !! 879 depend dep:
                                                   >> 880         @echo '*** Warning: make $@ is unnecessary now.'
1311                                                  881 
1312 # -------------------------------------------    882 # ---------------------------------------------------------------------------
1313 # vDSO install                                !! 883 # Firmware install
1314                                               !! 884 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1315 PHONY += vdso_install                         !! 885 export INSTALL_FW_PATH
1316 vdso_install: export INSTALL_FILES = $(vdso-i !! 886 
1317 vdso_install:                                 !! 887 PHONY += firmware_install
1318         $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 888 firmware_install: FORCE
                                                   >> 889         @mkdir -p $(objtree)/firmware
                                                   >> 890         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1319                                                  891 
1320 # -------------------------------------------    892 # ---------------------------------------------------------------------------
1321 # Tools                                       !! 893 # Kernel headers
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                                                  894 
1333 # The tools build system is not a part of Kbu !! 895 #Default location for installed headers
1334 # its own unique issues. If you need to integ !! 896 export INSTALL_HDR_PATH = $(objtree)/usr
1335 # please consider locating that tool outside  << 
1336 # standard Kbuild "hostprogs" syntax instead  << 
1337 # here. See Documentation/kbuild/makefiles.rs << 
1338                                                  897 
1339 PHONY += resolve_btfids_clean                 !! 898 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
1340                                                  899 
1341 resolve_btfids_O = $(abspath $(objtree))/tool !! 900 # If we do an all arch process set dst to asm-$(hdr-arch)
                                                   >> 901 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1342                                                  902 
1343 # tools/bpf/resolve_btfids directory might no !! 903 PHONY += archheaders
1344 # in output directory, skip its clean in that !! 904 archheaders:
1345 resolve_btfids_clean:                         << 
1346 ifneq ($(wildcard $(resolve_btfids_O)),)      << 
1347         $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 
1348 endif                                         << 
1349                                                  905 
1350 # Clear a bunch of variables before executing !! 906 PHONY += archscripts
1351 ifeq ($(quiet),silent_)                       !! 907 archscripts:
1352 tools_silent=s                                << 
1353 endif                                         << 
1354                                                  908 
1355 tools/: FORCE                                 !! 909 PHONY += __headers
1356         $(Q)mkdir -p $(objtree)/tools         !! 910 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
1357         $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too !! 911         $(Q)$(MAKE) $(build)=scripts build_unifdef
1358                                                  912 
1359 tools/%: FORCE                                !! 913 PHONY += headers_install_all
1360         $(Q)mkdir -p $(objtree)/tools         !! 914 headers_install_all:
1361         $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too !! 915         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1362                                                  916 
1363 # ------------------------------------------- !! 917 PHONY += headers_install
1364 # Kernel selftest                             !! 918 headers_install: __headers
                                                   >> 919         $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
                                                   >> 920           $(error Headers not exportable for the $(SRCARCH) architecture))
                                                   >> 921         $(Q)$(MAKE) $(hdr-inst)=include/uapi
                                                   >> 922         $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
1365                                                  923 
1366 PHONY += kselftest                            !! 924 PHONY += headers_check_all
1367 kselftest: headers                            !! 925 headers_check_all: headers_install_all
1368         $(Q)$(MAKE) -C $(srctree)/tools/testi !! 926         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1369                                               !! 927 
1370 kselftest-%: headers FORCE                    !! 928 PHONY += headers_check
1371         $(Q)$(MAKE) -C $(srctree)/tools/testi !! 929 headers_check: headers_install
1372                                               !! 930         $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1373 PHONY += kselftest-merge                      !! 931         $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
1374 kselftest-merge:                              << 
1375         $(if $(wildcard $(objtree)/.config),, << 
1376         $(Q)find $(srctree)/tools/testing/sel << 
1377                 xargs $(srctree)/scripts/kcon << 
1378         $(Q)$(MAKE) -f $(srctree)/Makefile ol << 
1379                                                  932 
1380 # -------------------------------------------    933 # ---------------------------------------------------------------------------
1381 # Devicetree files                            !! 934 # Modules
1382                                               << 
1383 ifneq ($(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                                                  935 
1395 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ !! 936 ifdef CONFIG_MODULES
1396 dtbs: dtbs_prepare                            << 
1397         $(Q)$(MAKE) $(build)=$(dtstree) need- << 
1398                                                  937 
1399 # include/config/kernel.release is actually n !! 938 # By default, build modules as well
1400 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 
1401 # dtbs_install depend on it as dtbs_install m << 
1402 dtbs_prepare: include/config/kernel.release s << 
1403                                                  939 
1404 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), !! 940 all: modules
1405 export CHECK_DTBS=y                           << 
1406 endif                                         << 
1407                                                  941 
1408 ifneq ($(CHECK_DTBS),)                        !! 942 #       Build modules
1409 dtbs_prepare: dt_binding_schemas              !! 943 #
1410 endif                                         !! 944 #       A module can be listed more than once in obj-m resulting in
                                                   >> 945 #       duplicate lines in modules.order files.  Those are removed
                                                   >> 946 #       using awk while concatenating to the final file.
                                                   >> 947 
                                                   >> 948 PHONY += modules
                                                   >> 949 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
                                                   >> 950         $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
                                                   >> 951         @$(kecho) '  Building modules, stage 2.';
                                                   >> 952         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
                                                   >> 953         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1411                                                  954 
1412 dtbs_check: dtbs                              !! 955 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
                                                   >> 956         $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1413                                                  957 
1414 dtbs_install:                                 !! 958 %/modules.builtin: include/config/auto.conf
1415         $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 959         $(Q)$(MAKE) $(modbuiltin)=$*
1416                                                  960 
1417 ifdef CONFIG_OF_EARLY_FLATTREE                << 
1418 all: dtbs                                     << 
1419 endif                                         << 
1420                                                  961 
1421 endif                                         !! 962 # Target to prepare building external modules
                                                   >> 963 PHONY += modules_prepare
                                                   >> 964 modules_prepare: prepare scripts
1422                                                  965 
1423 PHONY += scripts_dtc                          !! 966 # Target to install modules
1424 scripts_dtc: scripts_basic                    !! 967 PHONY += modules_install
1425         $(Q)$(MAKE) $(build)=scripts/dtc      !! 968 modules_install: _modinst_ _modinst_post
                                                   >> 969 
                                                   >> 970 PHONY += _modinst_
                                                   >> 971 _modinst_:
                                                   >> 972         @rm -rf $(MODLIB)/kernel
                                                   >> 973         @rm -f $(MODLIB)/source
                                                   >> 974         @mkdir -p $(MODLIB)/kernel
                                                   >> 975         @ln -s $(srctree) $(MODLIB)/source
                                                   >> 976         @if [ ! $(objtree) -ef  $(MODLIB)/build ]; then \
                                                   >> 977                 rm -f $(MODLIB)/build ; \
                                                   >> 978                 ln -s $(objtree) $(MODLIB)/build ; \
                                                   >> 979         fi
                                                   >> 980         @cp -f $(objtree)/modules.order $(MODLIB)/
                                                   >> 981         @cp -f $(objtree)/modules.builtin $(MODLIB)/
                                                   >> 982         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
                                                   >> 983 
                                                   >> 984 # This depmod is only for convenience to give the initial
                                                   >> 985 # boot a modules.dep even before / is mounted read-write.  However the
                                                   >> 986 # boot script depmod is the master version.
                                                   >> 987 PHONY += _modinst_post
                                                   >> 988 _modinst_post: _modinst_
                                                   >> 989         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
                                                   >> 990         $(call cmd,depmod)
1426                                                  991 
1427 ifneq ($(filter dt_binding_check, $(MAKECMDGO !! 992 ifeq ($(CONFIG_MODULE_SIG), y)
1428 export CHECK_DTBS=y                           !! 993 PHONY += modules_sign
                                                   >> 994 modules_sign:
                                                   >> 995         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1429 endif                                            996 endif
1430                                                  997 
1431 PHONY += dt_binding_check dt_binding_schemas  !! 998 else # CONFIG_MODULES
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                                                  999 
                                                   >> 1000 # Modules not configured
1442 # -------------------------------------------    1001 # ---------------------------------------------------------------------------
1443 # Modules                                     << 
1444                                               << 
1445 ifdef CONFIG_MODULES                          << 
1446                                               << 
1447 # By default, build modules as well           << 
1448                                                  1002 
1449 all: modules                                  !! 1003 modules modules_install: FORCE
1450                                               !! 1004         @echo >&2
1451 # When we're building modules with modversion !! 1005         @echo >&2 "The present kernel configuration has modules disabled."
1452 # the built-in objects during the descend as  !! 1006         @echo >&2 "Type 'make config' and enable loadable module support."
1453 # make sure the checksums are up to date befo !! 1007         @echo >&2 "Then build a kernel with module support enabled."
1454 ifdef CONFIG_MODVERSIONS                      !! 1008         @echo >&2
1455   KBUILD_BUILTIN := 1                         !! 1009         @exit 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                                                  1010 
1474 endif # CONFIG_MODULES                           1011 endif # CONFIG_MODULES
1475                                                  1012 
1476 ###                                              1013 ###
1477 # Cleaning is done on three levels.              1014 # Cleaning is done on three levels.
1478 # make clean     Delete most generated files     1015 # make clean     Delete most generated files
1479 #                Leave enough to build extern    1016 #                Leave enough to build external modules
1480 # make mrproper  Delete the current configura    1017 # make mrproper  Delete the current configuration, and all generated files
1481 # make distclean Remove editor backup files,     1018 # make distclean Remove editor backup files, patch leftover files and the like
1482                                                  1019 
1483 # Directories & files removed with 'make clea    1020 # Directories & files removed with 'make clean'
1484 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1021 CLEAN_DIRS  += $(MODVERDIR)
1485                modules.builtin modules.builti << 
1486                compile_commands.json rust/tes << 
1487                rust-project.json .vmlinux.obj << 
1488                                                  1022 
1489 # Directories & files removed with 'make mrpr    1023 # Directories & files removed with 'make mrproper'
1490 MRPROPER_FILES += include/config include/gene !! 1024 MRPROPER_DIRS  += include/config usr/include include/generated          \
1491                   arch/$(SRCARCH)/include/gen !! 1025                   arch/*/include/generated
1492                   debian snap tar-install PKG !! 1026 MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
1493                   .config .config.old .versio !! 1027                   Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1494                   Module.symvers \            !! 1028                   signing_key.priv signing_key.x509 x509.genkey         \
1495                   certs/signing_key.pem \     !! 1029                   extra_certificates signing_key.x509.keyid             \
1496                   certs/x509.genkey \         !! 1030                   signing_key.x509.signer
1497                   vmlinux-gdb.py \            << 
1498                   rpmbuild \                  << 
1499                   rust/libmacros.so           << 
1500                                                  1031 
1501 # clean - Delete most, but leave enough to bu    1032 # clean - Delete most, but leave enough to build external modules
1502 #                                                1033 #
1503 clean: private rm-files := $(CLEAN_FILES)     !! 1034 clean: rm-dirs  := $(CLEAN_DIRS)
                                                   >> 1035 clean: rm-files := $(CLEAN_FILES)
                                                   >> 1036 clean-dirs      := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1504                                                  1037 
1505 PHONY += archclean vmlinuxclean               !! 1038 PHONY += $(clean-dirs) clean archclean vmlinuxclean
                                                   >> 1039 $(clean-dirs):
                                                   >> 1040         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1506                                                  1041 
1507 vmlinuxclean:                                    1042 vmlinuxclean:
1508         $(Q)$(CONFIG_SHELL) $(srctree)/script    1043         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1509         $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f << 
1510                                                  1044 
1511 clean: archclean vmlinuxclean resolve_btfids_ !! 1045 clean: archclean vmlinuxclean
1512                                                  1046 
1513 # mrproper - Delete all generated files, incl    1047 # mrproper - Delete all generated files, including .config
1514 #                                                1048 #
1515 mrproper: private rm-files := $(MRPROPER_FILE !! 1049 mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1516 mrproper-dirs      := $(addprefix _mrproper_, !! 1050 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
                                                   >> 1051 mrproper-dirs      := $(addprefix _mrproper_,Documentation/DocBook scripts)
1517                                                  1052 
1518 PHONY += $(mrproper-dirs) mrproper            !! 1053 PHONY += $(mrproper-dirs) mrproper archmrproper
1519 $(mrproper-dirs):                                1054 $(mrproper-dirs):
1520         $(Q)$(MAKE) $(clean)=$(patsubst _mrpr    1055         $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1521                                                  1056 
1522 mrproper: clean $(mrproper-dirs)              !! 1057 mrproper: clean archmrproper $(mrproper-dirs)
                                                   >> 1058         $(call cmd,rmdirs)
1523         $(call cmd,rmfiles)                      1059         $(call cmd,rmfiles)
1524         @find . $(RCS_FIND_IGNORE) \          << 
1525                 \( -name '*.rmeta' \) \       << 
1526                 -type f -print | xargs rm -f  << 
1527                                                  1060 
1528 # distclean                                      1061 # distclean
1529 #                                                1062 #
1530 PHONY += distclean                               1063 PHONY += distclean
1531                                                  1064 
1532 distclean: mrproper                              1065 distclean: mrproper
1533         @find . $(RCS_FIND_IGNORE) \          !! 1066         @find $(srctree) $(RCS_FIND_IGNORE) \
1534                 \( -name '*.orig' -o -name '*    1067                 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1535                 -o -name '*.bak' -o -name '#* !! 1068                 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1536                 -o -name 'core' -o -name tags !! 1069                 -o -name '.*.rej' \
1537                 -o -name GPATH -o -name GRTAG !! 1070                 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1538                 -type f -print | xargs rm -f     1071                 -type f -print | xargs rm -f
1539                                                  1072 
1540                                                  1073 
1541 # Packaging of the kernel to various formats     1074 # Packaging of the kernel to various formats
1542 # -------------------------------------------    1075 # ---------------------------------------------------------------------------
                                                   >> 1076 # rpm target kept for backward compatibility
                                                   >> 1077 package-dir     := $(srctree)/scripts/package
1543                                                  1078 
1544 %src-pkg: FORCE                                  1079 %src-pkg: FORCE
1545         $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1080         $(Q)$(MAKE) $(build)=$(package-dir) $@
1546 %pkg: include/config/kernel.release FORCE        1081 %pkg: include/config/kernel.release FORCE
1547         $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1082         $(Q)$(MAKE) $(build)=$(package-dir) $@
                                                   >> 1083 rpm: include/config/kernel.release FORCE
                                                   >> 1084         $(Q)$(MAKE) $(build)=$(package-dir) $@
                                                   >> 1085 
1548                                                  1086 
1549 # Brief documentation of the typical targets     1087 # Brief documentation of the typical targets used
1550 # -------------------------------------------    1088 # ---------------------------------------------------------------------------
1551                                                  1089 
1552 boards := $(wildcard $(srctree)/arch/$(SRCARC    1090 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1553 boards := $(sort $(notdir $(boards)))         !! 1091 boards := $(notdir $(boards))
1554 board-dirs := $(dir $(wildcard $(srctree)/arc    1092 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1555 board-dirs := $(sort $(notdir $(board-dirs:/=    1093 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1556                                                  1094 
1557 PHONY += help                                 << 
1558 help:                                            1095 help:
1559         @echo  'Cleaning targets:'               1096         @echo  'Cleaning targets:'
1560         @echo  '  clean           - Remove mo    1097         @echo  '  clean           - Remove most generated files but keep the config and'
1561         @echo  '                    enough bu    1098         @echo  '                    enough build support to build external modules'
1562         @echo  '  mrproper        - Remove al    1099         @echo  '  mrproper        - Remove all generated files + config + various backup files'
1563         @echo  '  distclean       - mrproper     1100         @echo  '  distclean       - mrproper + remove editor backup and patch files'
1564         @echo  ''                                1101         @echo  ''
                                                   >> 1102         @echo  'Configuration targets:'
1565         @$(MAKE) -f $(srctree)/scripts/kconfi    1103         @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1566         @echo  ''                                1104         @echo  ''
1567         @echo  'Other generic targets:'          1105         @echo  'Other generic targets:'
1568         @echo  '  all             - Build all    1106         @echo  '  all             - Build all targets marked with [*]'
1569         @echo  '* vmlinux         - Build the    1107         @echo  '* vmlinux         - Build the bare kernel'
1570         @echo  '* modules         - Build all    1108         @echo  '* modules         - Build all modules'
1571         @echo  '  modules_install - Install a    1109         @echo  '  modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1572         @echo  '  vdso_install    - Install u !! 1110         @echo  '  firmware_install- Install all firmware to INSTALL_FW_PATH'
                                                   >> 1111         @echo  '                    (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1573         @echo  '  dir/            - Build all    1112         @echo  '  dir/            - Build all files in dir and below'
1574         @echo  '  dir/file.[ois]  - Build spe !! 1113         @echo  '  dir/file.[oisS] - Build specified target only'
1575         @echo  '  dir/file.ll     - Build the << 
1576         @echo  '                    (requires << 
1577         @echo  '  dir/file.lst    - Build spe    1114         @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1578         @echo  '                    (requires    1115         @echo  '                    (requires a recent binutils and recent build (System.map))'
1579         @echo  '  dir/file.ko     - Build mod    1116         @echo  '  dir/file.ko     - Build module including final link'
1580         @echo  '  modules_prepare - Set up fo    1117         @echo  '  modules_prepare - Set up for building external modules'
1581         @echo  '  tags/TAGS       - Generate     1118         @echo  '  tags/TAGS       - Generate tags file for editors'
1582         @echo  '  cscope          - Generate     1119         @echo  '  cscope          - Generate cscope index'
1583         @echo  '  gtags           - Generate     1120         @echo  '  gtags           - Generate GNU GLOBAL index'
1584         @echo  '  kernelrelease   - Output th !! 1121         @echo  '  kernelrelease   - Output the release version string'
1585         @echo  '  kernelversion   - Output th !! 1122         @echo  '  kernelversion   - Output the version stored in Makefile'
1586         @echo  '  image_name      - Output th << 
1587         @echo  '  headers_install - Install s    1123         @echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1588          echo  '                    (default:    1124          echo  '                    (default: $(INSTALL_HDR_PATH))'; \
1589          echo  ''                                1125          echo  ''
1590         @echo  'Static analysers:'            !! 1126         @echo  'Static analysers'
1591         @echo  '  checkstack      - Generate  !! 1127         @echo  '  checkstack      - Generate a list of stack hogs'
1592         @echo  '                    with a st !! 1128         @echo  '  namespacecheck  - Name space analysis on compiled kernel'
1593         @echo  '  versioncheck    - Sanity ch    1129         @echo  '  versioncheck    - Sanity check on version.h usage'
1594         @echo  '  includecheck    - Check for    1130         @echo  '  includecheck    - Check for duplicate included header files'
1595         @echo  '  export_report   - List the     1131         @echo  '  export_report   - List the usages of all exported symbols'
                                                   >> 1132         @echo  '  headers_check   - Sanity check on exported headers'
1596         @echo  '  headerdep       - Detect in    1133         @echo  '  headerdep       - Detect inclusion cycles in headers'
1597         @echo  '  coccicheck      - Check wit !! 1134         @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
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  ''                                1135         @echo  ''
1646         @echo  'Kernel packaging:'               1136         @echo  'Kernel packaging:'
1647         @$(MAKE) -f $(srctree)/scripts/Makefi !! 1137         @$(MAKE) $(build)=$(package-dir) help
1648         @echo  ''                                1138         @echo  ''
1649         @echo  'Documentation targets:'          1139         @echo  'Documentation targets:'
1650         @$(MAKE) -f $(srctree)/Documentation/ !! 1140         @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1651         @echo  ''                                1141         @echo  ''
1652         @echo  'Architecture-specific targets !! 1142         @echo  'Architecture specific targets ($(SRCARCH)):'
1653         @$(or $(archhelp),\                   !! 1143         @$(if $(archhelp),$(archhelp),\
1654                 echo '  No architecture-speci !! 1144                 echo '  No architecture specific help defined for $(SRCARCH)')
1655         @echo  ''                                1145         @echo  ''
1656         @$(if $(boards), \                       1146         @$(if $(boards), \
1657                 $(foreach b, $(boards), \        1147                 $(foreach b, $(boards), \
1658                 printf "  %-27s - Build for % !! 1148                 printf "  %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1659                 echo '')                         1149                 echo '')
1660         @$(if $(board-dirs), \                   1150         @$(if $(board-dirs), \
1661                 $(foreach b, $(board-dirs), \    1151                 $(foreach b, $(board-dirs), \
1662                 printf "  %-16s - Show %s-spe    1152                 printf "  %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1663                 printf "  %-16s - Show all of    1153                 printf "  %-16s - Show all of the above\\n" help-boards; \
1664                 echo '')                         1154                 echo '')
1665                                                  1155 
1666         @echo  '  make V=n   [targets] 1: ver !! 1156         @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1667         @echo  '                       2: giv !! 1157         @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1668         @echo  '                       V=1 an << 
1669         @echo  '  make O=dir [targets] Locate    1158         @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1670         @echo  '  make C=1   [targets] Check  !! 1159         @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1671         @echo  '                       (spars << 
1672         @echo  '  make C=2   [targets] Force     1160         @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1673         @echo  '  make RECORDMCOUNT_WARN=1 [t    1161         @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1674         @echo  '  make W=n   [targets] Enable !! 1162         @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1675         @echo  '                1: warnings w    1163         @echo  '                1: warnings which may be relevant and do not occur too often'
1676         @echo  '                2: warnings w    1164         @echo  '                2: warnings which occur quite often but may still be relevant'
1677         @echo  '                3: more obscu    1165         @echo  '                3: more obscure warnings, can most likely be ignored'
1678         @echo  '                c: extra chec << 
1679         @echo  '                e: warnings a << 
1680         @echo  '                Multiple leve    1166         @echo  '                Multiple levels can be combined with W=12 or W=123'
1681         @$(if $(dtstree), \                   << 
1682                 echo '  make CHECK_DTBS=1 [ta << 
1683                 echo '         This can be ap << 
1684                 )                             << 
1685         @echo  ''                                1167         @echo  ''
1686         @echo  'Execute "make" or "make all"     1168         @echo  'Execute "make" or "make all" to build all targets marked with [*] '
1687         @echo  'For further info see the ./RE    1169         @echo  'For further info see the ./README file'
1688                                                  1170 
1689                                                  1171 
1690 help-board-dirs := $(addprefix help-,$(board-    1172 help-board-dirs := $(addprefix help-,$(board-dirs))
1691                                                  1173 
1692 help-boards: $(help-board-dirs)                  1174 help-boards: $(help-board-dirs)
1693                                                  1175 
1694 boards-per-dir = $(sort $(notdir $(wildcard $ !! 1176 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1695                                                  1177 
1696 $(help-board-dirs): help-%:                      1178 $(help-board-dirs): help-%:
1697         @echo  'Architecture-specific targets !! 1179         @echo  'Architecture specific targets ($(SRCARCH) $*):'
1698         @$(if $(boards-per-dir), \               1180         @$(if $(boards-per-dir), \
1699                 $(foreach b, $(boards-per-dir    1181                 $(foreach b, $(boards-per-dir), \
1700                 printf "  %-24s - Build for %    1182                 printf "  %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1701                 echo '')                         1183                 echo '')
1702                                                  1184 
1703                                                  1185 
1704 # Documentation targets                          1186 # Documentation targets
1705 # -------------------------------------------    1187 # ---------------------------------------------------------------------------
1706 DOC_TARGETS := xmldocs latexdocs pdfdocs html !! 1188 %docs: scripts_basic FORCE
1707                linkcheckdocs dochelp refcheck !! 1189         $(Q)$(MAKE) $(build)=scripts build_docproc
1708 PHONY += $(DOC_TARGETS)                       !! 1190         $(Q)$(MAKE) $(build)=Documentation/DocBook $@
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                                                  1191 
1771 else # KBUILD_EXTMOD                             1192 else # KBUILD_EXTMOD
1772                                                  1193 
1773 filechk_kernel.release = echo $(KERNELRELEASE << 
1774                                               << 
1775 ###                                              1194 ###
1776 # External module support.                       1195 # External module support.
1777 # When building external modules the kernel u    1196 # When building external modules the kernel used as basis is considered
1778 # read-only, and no consistency checks are ma    1197 # read-only, and no consistency checks are made and the make
1779 # system is not used on the basis kernel. If     1198 # system is not used on the basis kernel. If updates are required
1780 # in the basis kernel ordinary make commands  !! 1199 # in the basis kernel ordinary make commands (without M=...) must
                                                   >> 1200 # be used.
                                                   >> 1201 #
                                                   >> 1202 # The following are the only valid targets when building external
                                                   >> 1203 # modules.
                                                   >> 1204 # make M=dir clean     Delete all automatically generated files
                                                   >> 1205 # make M=dir modules   Make all modules in specified dir
                                                   >> 1206 # make M=dir           Same as 'make M=dir modules'
                                                   >> 1207 # make M=dir modules_install
                                                   >> 1208 #                      Install the modules built in the module directory
                                                   >> 1209 #                      Assumes install directory is already created
1781                                                  1210 
1782 # We are always building only modules.        !! 1211 # We are always building modules
1783 KBUILD_BUILTIN :=                             << 
1784 KBUILD_MODULES := 1                              1212 KBUILD_MODULES := 1
                                                   >> 1213 PHONY += crmodverdir
                                                   >> 1214 crmodverdir:
                                                   >> 1215         $(cmd_crmodverdir)
                                                   >> 1216 
                                                   >> 1217 PHONY += $(objtree)/Module.symvers
                                                   >> 1218 $(objtree)/Module.symvers:
                                                   >> 1219         @test -e $(objtree)/Module.symvers || ( \
                                                   >> 1220         echo; \
                                                   >> 1221         echo "  WARNING: Symbol version dump $(objtree)/Module.symvers"; \
                                                   >> 1222         echo "           is missing; modules will have no dependencies and modversions."; \
                                                   >> 1223         echo )
                                                   >> 1224 
                                                   >> 1225 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
                                                   >> 1226 PHONY += $(module-dirs) modules
                                                   >> 1227 $(module-dirs): crmodverdir $(objtree)/Module.symvers
                                                   >> 1228         $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1785                                                  1229 
1786 build-dir := $(KBUILD_EXTMOD)                 !! 1230 modules: $(module-dirs)
                                                   >> 1231         @$(kecho) '  Building modules, stage 2.';
                                                   >> 1232         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1787                                                  1233 
1788 compile_commands.json: $(extmod_prefix)compil !! 1234 PHONY += modules_install
1789 PHONY += compile_commands.json                !! 1235 modules_install: _emodinst_ _emodinst_post
1790                                                  1236 
1791 clean-dirs := $(KBUILD_EXTMOD)                !! 1237 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1792 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1238 PHONY += _emodinst_
1793         $(KBUILD_EXTMOD)/compile_commands.jso !! 1239 _emodinst_:
1794                                               !! 1240         $(Q)mkdir -p $(MODLIB)/$(install-dir)
1795 PHONY += prepare                              !! 1241         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1796 # now expand this into a simple variable to r !! 1242 
1797 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1243 PHONY += _emodinst_post
1798 prepare:                                      !! 1244 _emodinst_post: _emodinst_
1799         @if [ "$(CC_VERSION_TEXT)" != "$(CONF !! 1245         $(call cmd,depmod)
1800                 echo >&2 "warning: the compil !! 1246 
1801                 echo >&2 "  The kernel was bu !! 1247 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1802                 echo >&2 "  You are using:    !! 1248 
1803         fi                                    !! 1249 PHONY += $(clean-dirs) clean
                                                   >> 1250 $(clean-dirs):
                                                   >> 1251         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
                                                   >> 1252 
                                                   >> 1253 clean:  rm-dirs := $(MODVERDIR)
                                                   >> 1254 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1804                                                  1255 
1805 PHONY += help                                 << 
1806 help:                                            1256 help:
1807         @echo  '  Building external modules.'    1257         @echo  '  Building external modules.'
1808         @echo  '  Syntax: make -C path/to/ker    1258         @echo  '  Syntax: make -C path/to/kernel/src M=$$PWD target'
1809         @echo  ''                                1259         @echo  ''
1810         @echo  '  modules         - default t    1260         @echo  '  modules         - default target, build the module(s)'
1811         @echo  '  modules_install - install t    1261         @echo  '  modules_install - install the module'
1812         @echo  '  clean           - remove ge    1262         @echo  '  clean           - remove generated files in module directory only'
1813         @echo  '  rust-analyzer   - generate  << 
1814         @echo  ''                                1263         @echo  ''
1815                                                  1264 
1816 ifndef CONFIG_MODULES                         !! 1265 # Dummies...
1817 modules modules_install: __external_modules_e !! 1266 PHONY += prepare scripts
1818 __external_modules_error:                     !! 1267 prepare: ;
1819         @echo >&2 '***'                       !! 1268 scripts: ;
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                            1269 endif # KBUILD_EXTMOD
1827                                                  1270 
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)                             1271 clean: $(clean-dirs)
                                                   >> 1272         $(call cmd,rmdirs)
1934         $(call cmd,rmfiles)                      1273         $(call cmd,rmfiles)
1935         @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1274         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1936                 \( -name '*.[aios]' -o -name  !! 1275                 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1937                 -o -name '*.ko.*' \              1276                 -o -name '*.ko.*' \
1938                 -o -name '*.dtb' -o -name '*. << 
1939                 -o -name '*.dtb.S' -o -name ' << 
1940                 -o -name '*.dt.yaml' -o -name << 
1941                 -o -name '*.dwo' -o -name '*. << 
1942                 -o -name '*.su' -o -name '*.m << 
1943                 -o -name '.*.d' -o -name '.*.    1277                 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1944                 -o -name '*.lex.c' -o -name ' << 
1945                 -o -name '*.asn1.[ch]' \      << 
1946                 -o -name '*.symtypes' -o -nam    1278                 -o -name '*.symtypes' -o -name 'modules.order' \
1947                 -o -name '*.c.[012]*.*' \     !! 1279                 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1948                 -o -name '*.ll' \             !! 1280                 -o -name '*.gcno' \) -type f -print | xargs rm -f
1949                 -o -name '*.gcno' \           << 
1950                 -o -name '*.*.symversions' \) << 
1951                 -o -name '.tmp_*' -print \    << 
1952                 | xargs rm -rf                << 
1953                                                  1281 
1954 # Generate tags for editors                      1282 # Generate tags for editors
1955 # -------------------------------------------    1283 # ---------------------------------------------------------------------------
1956 quiet_cmd_tags = GEN     $@                      1284 quiet_cmd_tags = GEN     $@
1957       cmd_tags = $(BASH) $(srctree)/scripts/t !! 1285       cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1958                                                  1286 
1959 tags TAGS cscope gtags: FORCE                    1287 tags TAGS cscope gtags: FORCE
1960         $(call cmd,tags)                         1288         $(call cmd,tags)
1961                                                  1289 
1962 # Generate rust-project.json (a file that des << 
1963 # Rust projects) for rust-analyzer (an implem << 
1964 # Protocol).                                  << 
1965 PHONY += rust-analyzer                        << 
1966 rust-analyzer:                                << 
1967         +$(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    1290 # Scripts to check various things for consistency
2006 # -------------------------------------------    1291 # ---------------------------------------------------------------------------
2007                                                  1292 
2008 PHONY += includecheck versioncheck coccicheck !! 1293 PHONY += includecheck versioncheck coccicheck namespacecheck export_report
2009                                                  1294 
2010 includecheck:                                    1295 includecheck:
2011         find $(srctree)/* $(RCS_FIND_IGNORE)     1296         find $(srctree)/* $(RCS_FIND_IGNORE) \
2012                 -name '*.[hcS]' -type f -prin    1297                 -name '*.[hcS]' -type f -print | sort \
2013                 | xargs $(PERL) -w $(srctree)    1298                 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
2014                                                  1299 
2015 versioncheck:                                    1300 versioncheck:
2016         find $(srctree)/* $(RCS_FIND_IGNORE)     1301         find $(srctree)/* $(RCS_FIND_IGNORE) \
2017                 -name '*.[hcS]' -type f -prin    1302                 -name '*.[hcS]' -type f -print | sort \
2018                 | xargs $(PERL) -w $(srctree)    1303                 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
2019                                                  1304 
2020 coccicheck:                                      1305 coccicheck:
2021         $(Q)$(BASH) $(srctree)/scripts/$@     !! 1306         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
                                                   >> 1307 
                                                   >> 1308 namespacecheck:
                                                   >> 1309         $(PERL) $(srctree)/scripts/namespace.pl
2022                                                  1310 
2023 export_report:                                   1311 export_report:
2024         $(PERL) $(srctree)/scripts/export_rep    1312         $(PERL) $(srctree)/scripts/export_report.pl
2025                                                  1313 
2026 PHONY += checkstack kernelrelease kernelversi !! 1314 endif #ifeq ($(config-targets),1)
                                                   >> 1315 endif #ifeq ($(mixed-targets),1)
                                                   >> 1316 
                                                   >> 1317 PHONY += checkstack kernelrelease kernelversion
2027                                                  1318 
2028 # UML needs a little special treatment here.     1319 # UML needs a little special treatment here.  It wants to use the host
2029 # toolchain, so needs $(SUBARCH) passed to ch    1320 # toolchain, so needs $(SUBARCH) passed to checkstack.pl.  Everyone
2030 # else wants $(ARCH), including people doing     1321 # else wants $(ARCH), including people doing cross-builds, which means
2031 # that $(SUBARCH) doesn't work here.             1322 # that $(SUBARCH) doesn't work here.
2032 ifeq ($(ARCH), um)                               1323 ifeq ($(ARCH), um)
2033 CHECKSTACK_ARCH := $(SUBARCH)                    1324 CHECKSTACK_ARCH := $(SUBARCH)
2034 else                                             1325 else
2035 CHECKSTACK_ARCH := $(ARCH)                       1326 CHECKSTACK_ARCH := $(ARCH)
2036 endif                                            1327 endif
2037 MINSTACKSIZE    ?= 100                        << 
2038 checkstack:                                      1328 checkstack:
2039         $(OBJDUMP) -d vmlinux $$(find . -name    1329         $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
2040         $(PERL) $(srctree)/scripts/checkstack !! 1330         $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
2041                                                  1331 
2042 kernelrelease:                                   1332 kernelrelease:
2043         @$(filechk_kernel.release)            !! 1333         @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
2044                                                  1334 
2045 kernelversion:                                   1335 kernelversion:
2046         @echo $(KERNELVERSION)                   1336         @echo $(KERNELVERSION)
2047                                                  1337 
2048 image_name:                                   !! 1338 # Clear a bunch of variables before executing the submake
2049         @echo $(KBUILD_IMAGE)                 !! 1339 tools/: FORCE
                                                   >> 1340         $(Q)mkdir -p $(objtree)/tools
                                                   >> 1341         $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/
                                                   >> 1342 
                                                   >> 1343 tools/%: FORCE
                                                   >> 1344         $(Q)mkdir -p $(objtree)/tools
                                                   >> 1345         $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*
                                                   >> 1346 
                                                   >> 1347 # Single targets
                                                   >> 1348 # ---------------------------------------------------------------------------
                                                   >> 1349 # Single targets are compatible with:
                                                   >> 1350 # - build with mixed source and output
                                                   >> 1351 # - build with separate output dir 'make O=...'
                                                   >> 1352 # - external modules
                                                   >> 1353 #
                                                   >> 1354 #  target-dir => where to store outputfile
                                                   >> 1355 #  build-dir  => directory in kernel source tree to use
2050                                                  1356 
2051 PHONY += run-command                          !! 1357 ifeq ($(KBUILD_EXTMOD),)
2052 run-command:                                  !! 1358         build-dir  = $(patsubst %/,%,$(dir $@))
2053         $(Q)$(KBUILD_RUN_COMMAND)             !! 1359         target-dir = $(dir $@)
                                                   >> 1360 else
                                                   >> 1361         zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
                                                   >> 1362         build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
                                                   >> 1363         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
                                                   >> 1364 endif
                                                   >> 1365 
                                                   >> 1366 %.s: %.c prepare scripts FORCE
                                                   >> 1367         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
                                                   >> 1368 %.i: %.c prepare scripts FORCE
                                                   >> 1369         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
                                                   >> 1370 %.o: %.c prepare scripts FORCE
                                                   >> 1371         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
                                                   >> 1372 %.lst: %.c prepare scripts FORCE
                                                   >> 1373         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
                                                   >> 1374 %.s: %.S prepare scripts FORCE
                                                   >> 1375         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
                                                   >> 1376 %.o: %.S prepare scripts FORCE
                                                   >> 1377         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
                                                   >> 1378 %.symtypes: %.c prepare scripts FORCE
                                                   >> 1379         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
                                                   >> 1380 
                                                   >> 1381 # Modules
                                                   >> 1382 /: prepare scripts FORCE
                                                   >> 1383         $(cmd_crmodverdir)
                                                   >> 1384         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
                                                   >> 1385         $(build)=$(build-dir)
                                                   >> 1386 %/: prepare scripts FORCE
                                                   >> 1387         $(cmd_crmodverdir)
                                                   >> 1388         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
                                                   >> 1389         $(build)=$(build-dir)
                                                   >> 1390 %.ko: prepare scripts FORCE
                                                   >> 1391         $(cmd_crmodverdir)
                                                   >> 1392         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
                                                   >> 1393         $(build)=$(build-dir) $(@:.ko=.o)
                                                   >> 1394         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
                                                   >> 1395 
                                                   >> 1396 # FIXME Should go into a make.lib or something 
                                                   >> 1397 # ===========================================================================
                                                   >> 1398 
                                                   >> 1399 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
                                                   >> 1400       cmd_rmdirs = rm -rf $(rm-dirs)
2054                                                  1401 
2055 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file    1402 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
2056       cmd_rmfiles = rm -rf $(rm-files)        !! 1403       cmd_rmfiles = rm -f $(rm-files)
                                                   >> 1404 
                                                   >> 1405 # Run depmod only if we have System.map and depmod is executable
                                                   >> 1406 quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)
                                                   >> 1407       cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
                                                   >> 1408                    $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
2057                                                  1409 
2058 # read saved command lines for existing targe !! 1410 # Create temporary dir for module support files
2059 existing-targets := $(wildcard $(sort $(targe !! 1411 # clean it up only when building all modules
                                                   >> 1412 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
                                                   >> 1413                   $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
                                                   >> 1414 
                                                   >> 1415 # read all saved command lines
                                                   >> 1416 
                                                   >> 1417 targets := $(wildcard $(sort $(targets)))
                                                   >> 1418 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
                                                   >> 1419 
                                                   >> 1420 ifneq ($(cmd_files),)
                                                   >> 1421   $(cmd_files): ;       # Do not try to update included dependency files
                                                   >> 1422   include $(cmd_files)
                                                   >> 1423 endif
2060                                                  1424 
2061 -include $(foreach f,$(existing-targets),$(di !! 1425 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
                                                   >> 1426 # Usage:
                                                   >> 1427 # $(Q)$(MAKE) $(clean)=dir
                                                   >> 1428 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
2062                                                  1429 
2063 endif # config-build                          !! 1430 endif   # skip-makefile
2064 endif # mixed-build                           << 
2065 endif # need-sub-make                         << 
2066                                                  1431 
2067 PHONY += FORCE                                   1432 PHONY += FORCE
2068 FORCE:                                           1433 FORCE:
2069                                                  1434 
2070 # Declare the contents of the PHONY variable  !! 1435 # Declare the contents of the .PHONY variable as phony.  We keep that
2071 # information in a variable so we can use it     1436 # information in a variable so we can use it in if_changed and friends.
2072 .PHONY: $(PHONY)                                 1437 .PHONY: $(PHONY)
                                                      

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