~hc/RK356X_SDK_RELEASE.git

..	..	@@ -1,9 +1,9 @@
1	1	# SPDX-License-Identifier: GPL-2.0
2		-VERSION = 4
3		-PATCHLEVEL = 19
4		-SUBLEVEL = 232
	2	+VERSION = 5
	3	+PATCHLEVEL = 10
	4	+SUBLEVEL = 160
5	5	EXTRAVERSION =
6		-NAME = "People's Front"
	6	+NAME = Dare mighty things
7	7
8	8	# DOCUMENTATION
9	9	# To see a list of typical targets execute "make help"
..	..	@@ -11,23 +11,12 @@
11	11	# Comments in this file are targeted only to the developer, do not
12	12	# expect to learn how to build the kernel reading this file.
13	13
	14	+$(if $(filter __%, $(MAKECMDGOALS)), \
	15	+ $(error targets prefixed with '__' are only for internal use))
	16	+
14	17	# That's our default target when none is given on the command line
15		-PHONY := _all
16		-_all:
17		-
18		-# o Do not use make's built-in rules and variables
19		-# (this increases performance and avoids hard-to-debug behaviour);
20		-# o Look for make include files relative to root of kernel src
21		-MAKEFLAGS += -rR --include-dir=$(CURDIR)
22		-
23		-# Avoid funny character set dependencies
24		-unexport LC_ALL
25		-LC_COLLATE=C
26		-LC_NUMERIC=C
27		-export LC_COLLATE LC_NUMERIC
28		-
29		-# Avoid interference with shell env settings
30		-unexport GREP_OPTIONS
	18	+PHONY := __all
	19	+__all:
31	20
32	21	# We are using a recursive build, so we need to do a little thinking
33	22	# to get the ordering right.
..	..	@@ -44,6 +33,21 @@
44	33	# effects are thus separated out and done before the recursive
45	34	# descending is started. They are now explicitly listed as the
46	35	# prepare rule.
	36	+
	37	+ifneq ($(sub_make_done),1)
	38	+
	39	+# Do not use make's built-in rules and variables
	40	+# (this increases performance and avoids hard-to-debug behaviour)
	41	+MAKEFLAGS += -rR
	42	+
	43	+# Avoid funny character set dependencies
	44	+unexport LC_ALL
	45	+LC_COLLATE=C
	46	+LC_NUMERIC=C
	47	+export LC_COLLATE LC_NUMERIC
	48	+
	49	+# Avoid interference with shell env settings
	50	+unexport GREP_OPTIONS
47	51
48	52	# Beautify output
49	53	# ---------------------------------------------------------------------------
..	..	@@ -67,6 +71,7 @@
67	71	#
68	72	# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
69	73	# If KBUILD_VERBOSE equals 1 then the above command is displayed.
	74	+# If KBUILD_VERBOSE equals 2 then give the reason why each target is rebuilt.
70	75	#
71	76	# To put more focus on warnings, be less verbose as default
72	77	# Use 'make V=1' to see the full commands
..	..	@@ -91,68 +96,99 @@
91	96
92	97	ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
93	98	quiet=silent_
94		- tools_silent=s
95	99	endif
96	100
97	101	export quiet Q KBUILD_VERBOSE
98	102
99		-# kbuild supports saving output files in a separate directory.
100		-# To locate output files in a separate directory two syntaxes are supported.
101		-# In both cases the working directory must be the root of the kernel src.
	103	+# Kbuild will save output files in the current working directory.
	104	+# This does not need to match to the root of the kernel source tree.
	105	+#
	106	+# For example, you can do this:
	107	+#
	108	+# cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile
	109	+#
	110	+# If you want to save output files in a different location, there are
	111	+# two syntaxes to specify it.
	112	+#
102	113	# 1) O=
103	114	# Use "make O=dir/to/store/output/files/"
104	115	#
105	116	# 2) Set KBUILD_OUTPUT
106		-# Set the environment variable KBUILD_OUTPUT to point to the directory
107		-# where the output files shall be placed.
108		-# export KBUILD_OUTPUT=dir/to/store/output/files/
109		-# make
	117	+# Set the environment variable KBUILD_OUTPUT to point to the output directory.
	118	+# export KBUILD_OUTPUT=dir/to/store/output/files/; make
110	119	#
111	120	# The O= assignment takes precedence over the KBUILD_OUTPUT environment
112	121	# variable.
113	122
114		-# KBUILD_SRC is not intended to be used by the regular user (for now),
115		-# it is set on invocation of make with KBUILD_OUTPUT or O= specified.
116		-ifeq ($(KBUILD_SRC),)
117		-
118		-# OK, Make called in directory where kernel src resides
119		-# Do we want to locate output files in a separate directory?
	123	+# Do we want to change the working directory?
120	124	ifeq ("$(origin O)", "command line")
121	125	KBUILD_OUTPUT := $(O)
122	126	endif
123	127
124		-# Cancel implicit rules on top Makefile
125		-$(CURDIR)/Makefile Makefile: ;
	128	+ifneq ($(KBUILD_OUTPUT),)
	129	+# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot
	130	+# expand a shell special character '~'. We use a somewhat tedious way here.
	131	+abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd)
	132	+$(if $(abs_objtree),, \
	133	+ $(error failed to create output directory "$(KBUILD_OUTPUT)"))
126	134
127		-ifneq ($(words $(subst :, ,$(CURDIR))), 1)
128		- $(error main directory cannot contain spaces nor colons)
	135	+# $(realpath ...) resolves symlinks
	136	+abs_objtree := $(realpath $(abs_objtree))
	137	+else
	138	+abs_objtree := $(CURDIR)
	139	+endif # ifneq ($(KBUILD_OUTPUT),)
	140	+
	141	+ifeq ($(abs_objtree),$(CURDIR))
	142	+# Suppress "Entering directory ..." unless we are changing the work directory.
	143	+MAKEFLAGS += --no-print-directory
	144	+else
	145	+need-sub-make := 1
129	146	endif
130	147
131		-ifneq ($(KBUILD_OUTPUT),)
132		-# check that the output directory actually exists
133		-saved-output := $(KBUILD_OUTPUT)
134		-KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
135		- && pwd)
136		-$(if $(KBUILD_OUTPUT),, \
137		- $(error failed to create output directory "$(saved-output)"))
	148	+abs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
138	149
139		-PHONY += $(MAKECMDGOALS) sub-make
	150	+ifneq ($(words $(subst :, ,$(abs_srctree))), 1)
	151	+$(error source directory cannot contain spaces or colons)
	152	+endif
140	153
141		-$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
	154	+ifneq ($(abs_srctree),$(abs_objtree))
	155	+# Look for make include files relative to root of kernel src
	156	+#
	157	+# This does not become effective immediately because MAKEFLAGS is re-parsed
	158	+# once after the Makefile is read. We need to invoke sub-make.
	159	+MAKEFLAGS += --include-dir=$(abs_srctree)
	160	+need-sub-make := 1
	161	+endif
	162	+
	163	+this-makefile := $(lastword $(MAKEFILE_LIST))
	164	+
	165	+ifneq ($(filter 3.%,$(MAKE_VERSION)),)
	166	+# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x
	167	+# We need to invoke sub-make to avoid implicit rules in the top Makefile.
	168	+need-sub-make := 1
	169	+# Cancel implicit rules for this Makefile.
	170	+$(this-makefile): ;
	171	+endif
	172	+
	173	+export abs_srctree abs_objtree
	174	+export sub_make_done := 1
	175	+
	176	+ifeq ($(need-sub-make),1)
	177	+
	178	+PHONY += $(MAKECMDGOALS) __sub-make
	179	+
	180	+$(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make
142	181	@:
143	182
144	183	# Invoke a second make in the output directory, passing relevant variables
145		-sub-make:
146		- $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
147		- -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
	184	+__sub-make:
	185	+ $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS)
148	186
149		-# Leave processing to above invocation of make
150		-skip-makefile := 1
151		-endif # ifneq ($(KBUILD_OUTPUT),)
152		-endif # ifeq ($(KBUILD_SRC),)
	187	+endif # need-sub-make
	188	+endif # sub_make_done
153	189
154	190	# We process the rest of the Makefile if this is the final invocation of make
155		-ifeq ($(skip-makefile),)
	191	+ifeq ($(need-sub-make),)
156	192
157	193	# Do not print "Entering directory ...",
158	194	# but we want to display it when entering to the output directory
..	..	@@ -176,38 +212,55 @@
176	212	KBUILD_CHECKSRC = 0
177	213	endif
178	214
179		-# Use make M=dir to specify directory of external module to build
180		-# Old syntax make ... SUBDIRS=$PWD is still supported
181		-# Setting the environment variable KBUILD_EXTMOD take precedence
182		-ifdef SUBDIRS
183		- KBUILD_EXTMOD ?= $(SUBDIRS)
184		-endif
185		-
	215	+# Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the
	216	+# directory of external module to build. Setting M= takes precedence.
186	217	ifeq ("$(origin M)", "command line")
187	218	KBUILD_EXTMOD := $(M)
188	219	endif
189	220
190		-ifeq ($(KBUILD_SRC),)
	221	+$(if $(word 2, $(KBUILD_EXTMOD)), \
	222	+ $(error building multiple external modules is not supported))
	223	+
	224	+export KBUILD_CHECKSRC KBUILD_EXTMOD
	225	+
	226	+extmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)
	227	+
	228	+# ANDROID: set up mixed-build support. mixed-build allows device kernel modules
	229	+# to be compiled against a GKI kernel. This approach still uses the headers and
	230	+# Kbuild from device kernel, so care must be taken to ensure that those headers match.
	231	+ifdef KBUILD_MIXED_TREE
	232	+# Need vmlinux.symvers for modpost and System.map for depmod, check whether they exist in KBUILD_MIXED_TREE
	233	+required_mixed_files=vmlinux.symvers System.map
	234	+$(if $(filter-out $(words $(required_mixed_files)), \
	235	+ $(words $(wildcard $(add-prefix $(KBUILD_MIXED_TREE)/,$(required_mixed_files))))),,\
	236	+ $(error KBUILD_MIXED_TREE=$(KBUILD_MIXED_TREE) doesn't contain $(required_mixed_files)))
	237	+endif
	238	+
	239	+mixed-build-prefix = $(if $(KBUILD_MIXED_TREE),$(KBUILD_MIXED_TREE)/)
	240	+export KBUILD_MIXED_TREE
	241	+
	242	+ifeq ($(abs_srctree),$(abs_objtree))
191	243	# building in the source tree
192	244	srctree := .
	245	+ building_out_of_srctree :=
193	246	else
194		- ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
	247	+ ifeq ($(abs_srctree)/,$(dir $(abs_objtree)))
195	248	# building in a subdirectory of the source tree
196	249	srctree := ..
197	250	else
198		- srctree := $(KBUILD_SRC)
	251	+ srctree := $(abs_srctree)
199	252	endif
	253	+ building_out_of_srctree := 1
200	254	endif
201	255
202		-export KBUILD_CHECKSRC KBUILD_EXTMOD KBUILD_SRC
	256	+ifneq ($(KBUILD_ABS_SRCTREE),)
	257	+srctree := $(abs_srctree)
	258	+endif
203	259
204	260	objtree := .
205		-src := $(srctree)
206		-obj := $(objtree)
	261	+VPATH := $(srctree)
207	262
208		-VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
209		-
210		-export srctree objtree VPATH
	263	+export building_out_of_srctree srctree objtree VPATH
211	264
212	265	# To make sure we do not include .config for any of the *config targets
213	266	# catch them early, and hand them over to scripts/kconfig/Makefile
..	..	@@ -223,63 +276,74 @@
223	276	clean-targets := %clean mrproper cleandocs
224	277	no-dot-config-targets := $(clean-targets) \
225	278	cscope gtags TAGS tags help% %docs check% coccicheck \
226		- $(version_h) headers_% archheaders archscripts \
227		- %asm-generic kernelversion %src-pkg
228		-no-sync-config-targets := $(no-dot-config-targets) install %install \
229		- kernelrelease
	279	+ $(version_h) headers headers_% archheaders archscripts \
	280	+ %asm-generic kernelversion %src-pkg dt_binding_check \
	281	+ outputmakefile
	282	+no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \
	283	+ image_name
	284	+single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/
230	285
231		-config-targets := 0
232		-mixed-targets := 0
233		-dot-config := 1
234		-may-sync-config := 1
	286	+config-build :=
	287	+mixed-build :=
	288	+need-config := 1
	289	+may-sync-config := 1
	290	+single-build :=
235	291
236	292	ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
237	293	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
238		- dot-config := 0
	294	+ need-config :=
239	295	endif
240	296	endif
241	297
242	298	ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),)
243	299	ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
244		- may-sync-config := 0
	300	+ may-sync-config :=
245	301	endif
246	302	endif
247	303
248	304	ifneq ($(KBUILD_EXTMOD),)
249		- may-sync-config := 0
	305	+ may-sync-config :=
250	306	endif
251	307
252	308	ifeq ($(KBUILD_EXTMOD),)
253		- ifneq ($(filter config %config,$(MAKECMDGOALS)),)
254		- config-targets := 1
	309	+ ifneq ($(filter %config,$(MAKECMDGOALS)),)
	310	+ config-build := 1
255	311	ifneq ($(words $(MAKECMDGOALS)),1)
256		- mixed-targets := 1
	312	+ mixed-build := 1
257	313	endif
258	314	endif
	315	+endif
	316	+
	317	+# We cannot build single targets and the others at the same time
	318	+ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),)
	319	+ single-build := 1
	320	+ ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),)
	321	+ mixed-build := 1
	322	+ endif
259	323	endif
260	324
261	325	# For "make -j clean all", "make -j mrproper defconfig all", etc.
262	326	ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),)
263	327	ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),)
264		- mixed-targets := 1
	328	+ mixed-build := 1
265	329	endif
266	330	endif
267	331
268	332	# install and modules_install need also be processed one by one
269	333	ifneq ($(filter install,$(MAKECMDGOALS)),)
270	334	ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
271		- mixed-targets := 1
	335	+ mixed-build := 1
272	336	endif
273	337	endif
274	338
275		-ifeq ($(mixed-targets),1)
	339	+ifdef mixed-build
276	340	# ===========================================================================
277	341	# We're called with mixed targets (*config and build targets).
278	342	# Handle them one by one.
279	343
280	344	PHONY += $(MAKECMDGOALS) __build_one_by_one
281	345
282		-$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
	346	+$(MAKECMDGOALS): __build_one_by_one
283	347	@:
284	348
285	349	__build_one_by_one:
..	..	@@ -288,10 +352,8 @@
288	352	$(MAKE) -f $(srctree)/Makefile $$i; \
289	353	done
290	354
291		-else
	355	+else # !mixed-build
292	356
293		-# We need some generic definitions (do not try to remake the file).
294		-scripts/Kbuild.include: ;
295	357	include scripts/Kbuild.include
296	358
297	359	# Read KERNELRELEASE from include/config/kernel.release (if it exists)
..	..	@@ -320,22 +382,6 @@
320	382	# Default value for CROSS_COMPILE is not to prefix executables
321	383	# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
322	384	ARCH ?= $(SUBARCH)
323		-ifeq ($(ARCH),arm64)
324		-ifneq ($(wildcard $(srctree)/../prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu),)
325		-CROSS_COMPILE ?= $(srctree)/../prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
326		-endif
327		-ifneq ($(wildcard $(srctree)/../prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9),)
328		-CROSS_COMPILE ?= $(srctree)/../prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-
329		-endif
330		-endif
331		-ifeq ($(ARCH),arm)
332		-ifneq ($(wildcard $(srctree)/../prebuilts/gcc/linux-x86/arm/gcc-linaro-6.3.1-2017.05-x86_64_arm-linux-gnueabihf),)
333		-CROSS_COMPILE ?= $(srctree)/../prebuilts/gcc/linux-x86/arm/gcc-linaro-6.3.1-2017.05-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
334		-endif
335		-ifneq ($(wildcard $(srctree)/../prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.9),)
336		-CROSS_COMPILE ?= $(srctree)/../prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.9/bin/arm-linux-androidkernel-
337		-endif
338		-endif
339	385
340	386	# Architecture as present in compile.h
341	387	UTS_MACHINE := $(ARCH)
..	..	@@ -365,10 +411,11 @@
365	411	KCONFIG_CONFIG ?= .config
366	412	export KCONFIG_CONFIG
367	413
	414	+# Default file for 'make defconfig'. This may be overridden by arch-Makefile.
	415	+export KBUILD_DEFCONFIG := defconfig
	416	+
368	417	# SHELL used by kbuild
369		-CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
370		- else if [ -x /bin/bash ]; then echo /bin/bash; \
371		- else echo sh; fi ; fi)
	418	+CONFIG_SHELL := sh
372	419
373	420	HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null)
374	421	HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null)
..	..	@@ -381,10 +428,14 @@
381	428	HOSTCC = gcc
382	429	HOSTCXX = g++
383	430	endif
384		-KBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \
385		- -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \
386		- $(HOSTCFLAGS)
387		-KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS)
	431	+
	432	+KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
	433	+ -O2 -fomit-frame-pointer -std=gnu89
	434	+KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) $(USERCFLAGS)
	435	+KBUILD_USERLDFLAGS := $(USERLDFLAGS)
	436	+
	437	+KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS)
	438	+KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS)
388	439	KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS)
389	440	KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
390	441
..	..	@@ -398,7 +449,6 @@
398	449	OBJCOPY = llvm-objcopy
399	450	OBJDUMP = llvm-objdump
400	451	READELF = llvm-readelf
401		-OBJSIZE = llvm-size
402	452	STRIP = llvm-strip
403	453	else
404	454	CC = $(CROSS_COMPILE)gcc
..	..	@@ -408,32 +458,41 @@
408	458	OBJCOPY = $(CROSS_COMPILE)objcopy
409	459	OBJDUMP = $(CROSS_COMPILE)objdump
410	460	READELF = $(CROSS_COMPILE)readelf
411		-OBJSIZE = $(CROSS_COMPILE)size
412	461	STRIP = $(CROSS_COMPILE)strip
413	462	endif
	463	+PAHOLE = pahole
	464	+RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve_btfids/resolve_btfids
414	465	LEX = flex
415	466	YACC = bison
416	467	AWK = awk
417		-GENKSYMS = scripts/genksyms/genksyms
418	468	INSTALLKERNEL := installkernel
419	469	DEPMOD = depmod
420	470	PERL = perl
421	471	PYTHON = python
422		-PYTHON2 = python2
423	472	PYTHON3 = python3
424	473	CHECK = sparse
	474	+BASH = bash
	475	+KGZIP = gzip
	476	+KBZIP2 = bzip2
	477	+KLZOP = lzop
	478	+LZMA = lzma
	479	+LZ4 = lz4
	480	+XZ = xz
	481	+ZSTD = zstd
425	482
426	483	# Use the wrapper for the compiler. This wrapper scans for new
427	484	# warnings and causes the build to stop upon encountering them.
428	485	ifeq ($(CC),$(CROSS_COMPILE)gcc)
429	486	ifneq ($(wildcard $(srctree)/scripts/gcc-wrapper.py),)
430		-CC = $(srctree)/scripts/gcc-wrapper.py $(CROSS_COMPILE)gcc
	487	+CC = $(abspath $(srctree)/scripts/gcc-wrapper.py) $(CROSS_COMPILE)gcc
431	488	endif
432	489	endif
433	490
	491	+PAHOLE_FLAGS = $(shell PAHOLE=$(PAHOLE) $(srctree)/scripts/pahole-flags.sh)
	492	+
434	493	CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
435	494	-Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF)
436		-NOSTDINC_FLAGS =
	495	+NOSTDINC_FLAGS :=
437	496	CFLAGS_MODULE =
438	497	AFLAGS_MODULE =
439	498	LDFLAGS_MODULE =
..	..	@@ -454,44 +513,39 @@
454	513	LINUXINCLUDE := \
455	514	-I$(srctree)/arch/$(SRCARCH)/include \
456	515	-I$(objtree)/arch/$(SRCARCH)/include/generated \
457		- $(if $(KBUILD_SRC), -I$(srctree)/include) \
	516	+ $(if $(building_out_of_srctree),-I$(srctree)/include) \
458	517	-I$(objtree)/include \
459	518	$(USERINCLUDE)
460	519
461		-KBUILD_AFLAGS := -D__ASSEMBLY__
462		-KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
463		- -fno-strict-aliasing -fno-common -fshort-wchar \
464		- -Werror-implicit-function-declaration \
	520	+KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE
	521	+KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
	522	+ -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
	523	+ -Werror=implicit-function-declaration -Werror=implicit-int \
465	524	-Werror=return-type -Wno-format-security \
466		- -w
	525	+ -w \
467	526	-std=gnu89
468	527	KBUILD_CPPFLAGS := -D__KERNEL__
469	528	KBUILD_AFLAGS_KERNEL :=
470	529	KBUILD_CFLAGS_KERNEL :=
471	530	KBUILD_AFLAGS_MODULE := -DMODULE
472	531	KBUILD_CFLAGS_MODULE := -DMODULE
473		-KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
	532	+KBUILD_LDFLAGS_MODULE :=
474	533	KBUILD_LDFLAGS :=
475		-GCC_PLUGINS_CFLAGS :=
476	534	CLANG_FLAGS :=
477	535
478		-export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
479		-export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS
480		-export MAKE LEX YACC AWK GENKSYMS INSTALLKERNEL PERL PYTHON PYTHON2 PYTHON3 UTS_MACHINE
481		-export HOSTCXX KBUILD_HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
	536	+export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
	537	+export CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL
	538	+export PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
	539	+export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD
	540	+export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
	541	+export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS
482	542
483	543	export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS
484	544	export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
485		-export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN
486	545	export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
487	546	export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
488	547	export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
489		-export KBUILD_ARFLAGS
490		-
491		-# When compiling out-of-tree modules, put MODVERDIR in the module
492		-# tree rather than in the kernel tree. The kernel tree might
493		-# even be read-only.
494		-export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
	548	+export PAHOLE_FLAGS
495	549
496	550	# Files to ignore in find ... statements
497	551
..	..	@@ -510,21 +564,31 @@
510	564	$(Q)$(MAKE) $(build)=scripts/basic
511	565	$(Q)rm -f .tmp_quiet_recordmcount
512	566
513		-# To avoid any implicit rule to kick in, define an empty command.
514		-scripts/basic/%: scripts_basic ;
515		-
516	567	PHONY += outputmakefile
	568	+# Before starting out-of-tree build, make sure the source tree is clean.
517	569	# outputmakefile generates a Makefile in the output directory, if using a
518	570	# separate output directory. This allows convenient use of make in the
519	571	# output directory.
	572	+# At the same time when output Makefile generated, generate .gitignore to
	573	+# ignore whole output directory
520	574	outputmakefile:
521		-ifneq ($(KBUILD_SRC),)
	575	+ifdef building_out_of_srctree
	576	+ $(Q)if [ -f $(srctree)/.config -o \
	577	+ -d $(srctree)/include/config -o \
	578	+ -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
	579	+ echo >&2 "***"; \
	580	+ echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \
	581	+ echo >&2 "*** in $(abs_srctree)";\
	582	+ echo >&2 "***"; \
	583	+ false; \
	584	+ fi
522	585	$(Q)ln -fsn $(srctree) source
523		- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
524		- $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
	586	+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
	587	+ $(Q)test -e .gitignore \|\| \
	588	+ { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore
525	589	endif
526	590
527		-ifeq ($(cc-name),clang)
	591	+ifneq ($(shell $(CC) --version 2>&1 \| head -n 1 \| grep clang),)
528	592	ifneq ($(CROSS_COMPILE),)
529	593	CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
530	594	GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
..	..	@@ -543,25 +607,13 @@
543	607	export CLANG_FLAGS
544	608	endif
545	609
546		-RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register
547		-RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register
548		-RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk
549		-RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline
550		-RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG)))
551		-RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG)))
552		-export RETPOLINE_CFLAGS
553		-export RETPOLINE_VDSO_CFLAGS
554		-
555		-KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
556		-KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
557		-
558	610	# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included.
559	611	# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile.
560	612	# CC_VERSION_TEXT is referenced from Kconfig (so it needs export),
561	613	# and from include/config/auto.conf.cmd to detect the compiler upgrade.
562		-CC_VERSION_TEXT = $(shell $(CC) --version \| head -n 1)
	614	+CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null \| head -n 1)
563	615
564		-ifeq ($(config-targets),1)
	616	+ifdef config-build
565	617	# ===========================================================================
566	618	# *config targets only - make sure prerequisites are updated, and descend
567	619	# in scripts/kconfig to make the *config target
..	..	@@ -572,24 +624,24 @@
572	624	include arch/$(SRCARCH)/Makefile
573	625	export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT
574	626
575		-config: scripts_basic outputmakefile FORCE
	627	+config: outputmakefile scripts_basic FORCE
576	628	$(Q)$(MAKE) $(build)=scripts/kconfig $@
577	629
578		-%config: scripts_basic outputmakefile FORCE
	630	+%config: outputmakefile scripts_basic FORCE
579	631	$(Q)$(MAKE) $(build)=scripts/kconfig $@
580	632
581		-else
	633	+else #!config-build
582	634	# ===========================================================================
583	635	# Build targets only - this includes vmlinux, arch specific targets, clean
584	636	# targets and others. In general all targets except *config targets.
585	637
586	638	# If building an external module we do not care about the all: rule
587		-# but instead _all depend on modules
	639	+# but instead __all depend on modules
588	640	PHONY += all
589	641	ifeq ($(KBUILD_EXTMOD),)
590		-_all: all
	642	+__all: all
591	643	else
592		-_all: modules
	644	+__all: modules
593	645	endif
594	646
595	647	# Decide whether to build built-in, modular, or both.
..	..	@@ -607,7 +659,7 @@
607	659	# in addition to whatever we do anyway.
608	660	# Just "make" or "make all" shall build modules as well
609	661
610		-ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
	662	+ifneq ($(filter all modules nsdeps %compile_commands.json clang-%,$(MAKECMDGOALS)),)
611	663	KBUILD_MODULES := 1
612	664	endif
613	665
..	..	@@ -617,25 +669,26 @@
617	669
618	670	export KBUILD_MODULES KBUILD_BUILTIN
619	671
620		-ifeq ($(KBUILD_EXTMOD),)
621		-# Objects we will link into vmlinux / subdirs we need to visit
622		-init-y := init/
623		-drivers-y := drivers/ sound/ firmware/
624		-net-y := net/
625		-libs-y := lib/
626		-core-y := usr/
627		-virt-y := virt/
628		-endif # KBUILD_EXTMOD
629		-
630		-ifeq ($(dot-config),1)
	672	+ifdef need-config
631	673	include include/config/auto.conf
632	674	endif
633	675
	676	+ifeq ($(KBUILD_EXTMOD),)
	677	+# Objects we will link into vmlinux / subdirs we need to visit
	678	+core-y := init/ usr/
	679	+drivers-y := drivers/ sound/
	680	+drivers-$(CONFIG_SAMPLES) += samples/
	681	+drivers-y += net/ virt/
	682	+libs-y := lib/
	683	+endif # KBUILD_EXTMOD
	684	+
	685	+ifndef KBUILD_MIXED_TREE
634	686	# The all: target is the default when no target is given on the
635	687	# command line.
636	688	# This allow a user to issue only 'make' to build a kernel including modules
637	689	# Defaults to vmlinux, but the arch makefile usually adds further targets
638	690	all: vmlinux
	691	+endif
639	692
640	693	CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \
641	694	$(call cc-option,-fno-tree-loop-im) \
..	..	@@ -647,32 +700,41 @@
647	700	CC_FLAGS_FTRACE := -pg
648	701	endif
649	702
650		-# Make toolchain changes before including arch/$(SRCARCH)/Makefile to ensure
651		-# ar/cc/ld-* macros return correct values.
652		-ifdef CONFIG_LTO_CLANG
653		-# use llvm-ar for building symbol tables from IR files, and llvm-nm instead
654		-# of objdump for processing symbol versions and exports
655		-LLVM_AR := llvm-ar
656		-LLVM_NM := llvm-nm
657		-export LLVM_AR LLVM_NM
	703	+ifdef CONFIG_CC_IS_GCC
	704	+RETPOLINE_CFLAGS := $(call cc-option,-mindirect-branch=thunk-extern -mindirect-branch-register)
	705	+RETPOLINE_CFLAGS += $(call cc-option,-mindirect-branch-cs-prefix)
	706	+RETPOLINE_VDSO_CFLAGS := $(call cc-option,-mindirect-branch=thunk-inline -mindirect-branch-register)
	707	+endif
	708	+ifdef CONFIG_CC_IS_CLANG
	709	+RETPOLINE_CFLAGS := -mretpoline-external-thunk
	710	+RETPOLINE_VDSO_CFLAGS := -mretpoline
658	711	endif
659	712
660		-# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
661		-# values of the respective KBUILD_* variables
662		-ARCH_CPPFLAGS :=
663		-ARCH_AFLAGS :=
664		-ARCH_CFLAGS :=
	713	+ifdef CONFIG_RETHUNK
	714	+RETHUNK_CFLAGS := -mfunction-return=thunk-extern
	715	+RETPOLINE_CFLAGS += $(RETHUNK_CFLAGS)
	716	+endif
	717	+
	718	+export RETPOLINE_CFLAGS
	719	+export RETPOLINE_VDSO_CFLAGS
	720	+
665	721	include arch/$(SRCARCH)/Makefile
666	722
667		-ifeq ($(dot-config),1)
668		-ifeq ($(may-sync-config),1)
	723	+ifdef need-config
	724	+ifdef may-sync-config
669	725	# Read in dependencies to all Kconfig* files, make sure to run syncconfig if
670	726	# changes are detected. This should be included after arch/$(SRCARCH)/Makefile
671	727	# because some architectures define CROSS_COMPILE there.
672	728	include include/config/auto.conf.cmd
673	729
674		-# To avoid any implicit rule to kick in, define an empty command
675		-$(KCONFIG_CONFIG): ;
	730	+$(KCONFIG_CONFIG):
	731	+ @echo >&2 '***'
	732	+ @echo >&2 '*** Configuration file "$@" not found!'
	733	+ @echo >&2 '***'
	734	+ @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or'
	735	+ @echo >&2 '*** "make menuconfig" or "make xconfig").'
	736	+ @echo >&2 '***'
	737	+ @/bin/false
676	738
677	739	# The actual configuration files used during the build are stored in
678	740	# include/generated/ and include/config/. Update them if .config is newer than
..	..	@@ -680,9 +742,14 @@
680	742	#
681	743	# This exploits the 'multi-target pattern rule' trick.
682	744	# The syncconfig should be executed only once to make all the targets.
683		-%/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG)
	745	+# (Note: use the grouped target '&:' when we bump to GNU Make 4.3)
	746	+#
	747	+# Do not use $(call cmd,...) here. That would suppress prompts from syncconfig,
	748	+# so you cannot notice that Kconfig is waiting for the user input.
	749	+%/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG)
	750	+ $(Q)$(kecho) " SYNC $@"
684	751	$(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
685		-else
	752	+else # !may-sync-config
686	753	# External modules and some install targets need include/generated/autoconf.h
687	754	# and include/config/auto.conf but do not care if they are up-to-date.
688	755	# Use auto.conf to trigger the test
..	..	@@ -698,33 +765,25 @@
698	765	/bin/false)
699	766
700	767	endif # may-sync-config
701		-endif # $(dot-config)
	768	+endif # need-config
702	769
703	770	KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
704	771	KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,)
705	772	KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
706	773	KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
707		-KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context)
708	774	KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
709	775
710		-ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
711		-KBUILD_CFLAGS += -Os
712		-else
713		-KBUILD_CFLAGS += -O2
	776	+ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
	777	+KBUILD_CFLAGS += -O2
	778	+else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3
	779	+KBUILD_CFLAGS += -O3
	780	+else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
	781	+KBUILD_CFLAGS += -Os
714	782	endif
715	783
716	784	# Tell gcc to never replace conditional load with a non-conditional one
717	785	KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
718	786	KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races)
719		-
720		-# check for 'asm goto'
721		-ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
722		- KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
723		- KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
724		-endif
725		-
726		-include scripts/Makefile.kcov
727		-include scripts/Makefile.gcc-plugins
728	787
729	788	ifdef CONFIG_READABLE_ASM
730	789	# Disable optimizations that make assembler listings hard to read.
..	..	@@ -737,26 +796,32 @@
737	796	endif
738	797
739	798	ifneq ($(CONFIG_FRAME_WARN),0)
740		-KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
	799	+KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN)
741	800	endif
742	801
743		-stackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector
	802	+stackp-flags-y := -fno-stack-protector
744	803	stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector
745	804	stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong
746	805
747	806	KBUILD_CFLAGS += $(stackp-flags-y)
748	807
749		-ifeq ($(cc-name),clang)
750		-KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
751		-KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
752		-KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
753		-# Quiet clang warning: comparison of unsigned expression < 0 is always false
754		-KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
	808	+KBUILD_CFLAGS-$(CONFIG_WERROR) += -Werror
	809	+KBUILD_CFLAGS += $(KBUILD_CFLAGS-y)
	810	+
	811	+ifdef CONFIG_CC_IS_CLANG
	812	+KBUILD_CPPFLAGS += -Qunused-arguments
	813	+KBUILD_CFLAGS += -Wno-format-invalid-specifier
	814	+KBUILD_CFLAGS += -Wno-gnu
755	815	# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
756	816	# source of a reference will be _MergedGlobals and not on of the whitelisted names.
757	817	# See modpost pattern 2
758		-KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
759		-KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
	818	+KBUILD_CFLAGS += -mno-global-merge
	819	+else
	820	+
	821	+# Warn about unmarked fall-throughs in switch statement.
	822	+# Disabled for clang while comment to attribute conversion happens and
	823	+# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed.
	824	+KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,)
760	825	endif
761	826
762	827	# These warnings generated too much noise in a regular build.
..	..	@@ -784,47 +849,72 @@
784	849
785	850	# Initialize all stack variables with a zero value.
786	851	ifdef CONFIG_INIT_STACK_ALL_ZERO
787		-# Future support for zero initialization is still being debated, see
788		-# https://bugs.llvm.org/show_bug.cgi?id=45497. These flags are subject to being
789		-# renamed or dropped.
790	852	KBUILD_CFLAGS += -ftrivial-auto-var-init=zero
	853	+ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER
	854	+# https://github.com/llvm/llvm-project/issues/44842
791	855	KBUILD_CFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
792	856	endif
	857	+endif
793	858
794		-KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
	859	+DEBUG_CFLAGS :=
	860	+
	861	+# Workaround for GCC versions < 5.0
	862	+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801
	863	+ifdef CONFIG_CC_IS_GCC
	864	+DEBUG_CFLAGS += $(call cc-ifversion, -lt, 0500, $(call cc-option, -fno-var-tracking-assignments))
	865	+endif
795	866
796	867	ifdef CONFIG_DEBUG_INFO
	868	+
797	869	ifdef CONFIG_DEBUG_INFO_SPLIT
798		-KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g)
	870	+DEBUG_CFLAGS += -gsplit-dwarf
799	871	else
800		-KBUILD_CFLAGS += -g
	872	+DEBUG_CFLAGS += -g
801	873	endif
802		-ifneq ($(LLVM_IAS),1)
	874	+
	875	+ifeq ($(LLVM_IAS),1)
	876	+KBUILD_AFLAGS += -g
	877	+else
803	878	KBUILD_AFLAGS += -Wa,-gdwarf-2
804		-endif
805	879	endif
806	880
807	881	ifdef CONFIG_DEBUG_INFO_DWARF4
808		-KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,)
	882	+DEBUG_CFLAGS += -gdwarf-4
809	883	endif
810	884
811	885	ifdef CONFIG_DEBUG_INFO_REDUCED
812		-KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
	886	+DEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
813	887	$(call cc-option,-fno-var-tracking)
814	888	endif
815	889
	890	+ifdef CONFIG_DEBUG_INFO_COMPRESSED
	891	+DEBUG_CFLAGS += -gz=zlib
	892	+KBUILD_AFLAGS += -gz=zlib
	893	+KBUILD_LDFLAGS += --compress-debug-sections=zlib
	894	+endif
	895	+
	896	+endif # CONFIG_DEBUG_INFO
	897	+
	898	+KBUILD_CFLAGS += $(DEBUG_CFLAGS)
	899	+export DEBUG_CFLAGS
	900	+
816	901	ifdef CONFIG_FUNCTION_TRACER
817		-ifdef CONFIG_FTRACE_MCOUNT_RECORD
818		- # gcc 5 supports generating the mcount tables directly
819		- ifeq ($(call cc-option-yn,-mrecord-mcount),y)
820		- CC_FLAGS_FTRACE += -mrecord-mcount
821		- export CC_USING_RECORD_MCOUNT := 1
822		- endif
	902	+ifdef CONFIG_FTRACE_MCOUNT_USE_CC
	903	+ CC_FLAGS_FTRACE += -mrecord-mcount
823	904	ifdef CONFIG_HAVE_NOP_MCOUNT
824	905	ifeq ($(call cc-option-yn, -mnop-mcount),y)
825	906	CC_FLAGS_FTRACE += -mnop-mcount
826	907	CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT
827	908	endif
	909	+ endif
	910	+endif
	911	+ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL
	912	+ CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT
	913	+endif
	914	+ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
	915	+ ifdef CONFIG_HAVE_C_RECORDMCOUNT
	916	+ BUILD_C_RECORDMCOUNT := y
	917	+ export BUILD_C_RECORDMCOUNT
828	918	endif
829	919	endif
830	920	ifdef CONFIG_HAVE_FENTRY
..	..	@@ -836,12 +926,6 @@
836	926	export CC_FLAGS_FTRACE
837	927	KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING)
838	928	KBUILD_AFLAGS += $(CC_FLAGS_USING)
839		-ifdef CONFIG_DYNAMIC_FTRACE
840		- ifdef CONFIG_HAVE_C_RECORDMCOUNT
841		- BUILD_C_RECORDMCOUNT := y
842		- export BUILD_C_RECORDMCOUNT
843		- endif
844		-endif
845	929	endif
846	930
847	931	# We trigger additional mismatches with less inlining
..	..	@@ -854,77 +938,72 @@
854	938	LDFLAGS_vmlinux += --gc-sections
855	939	endif
856	940
857		-ifdef CONFIG_LTO_CLANG
858		-ifdef CONFIG_THINLTO
859		-lto-clang-flags := -flto=thin
860		-KBUILD_LDFLAGS += --thinlto-cache-dir=.thinlto-cache
861		-else
862		-lto-clang-flags := -flto
863		-endif
864		-lto-clang-flags += -fvisibility=default $(call cc-option, -fsplit-lto-unit)
865		-
866		-# Limit inlining across translation units to reduce binary size
867		-LD_FLAGS_LTO_CLANG := -mllvm -import-instr-limit=5
868		-
869		-KBUILD_LDFLAGS += $(LD_FLAGS_LTO_CLANG)
870		-KBUILD_LDFLAGS_MODULE += $(LD_FLAGS_LTO_CLANG)
871		-
872		-KBUILD_LDFLAGS_MODULE += -T scripts/module-lto.lds
873		-
874		-# allow disabling only clang LTO where needed
875		-DISABLE_LTO_CLANG := -fno-lto
876		-export DISABLE_LTO_CLANG
877		-endif
878		-
879		-ifdef CONFIG_LTO
880		-LTO_CFLAGS := $(lto-clang-flags)
881		-KBUILD_CFLAGS += $(LTO_CFLAGS)
882		-
883		-DISABLE_LTO := $(DISABLE_LTO_CLANG)
884		-export LTO_CFLAGS DISABLE_LTO
885		-endif
886		-
887		-ifdef CONFIG_CFI_CLANG
888		-cfi-clang-flags += -fsanitize=cfi -fno-sanitize-cfi-canonical-jump-tables \
889		- -fno-sanitize-blacklist
890		-DISABLE_CFI_CLANG := -fno-sanitize=cfi
891		-ifdef CONFIG_MODULES
892		-cfi-clang-flags += -fsanitize-cfi-cross-dso
893		-DISABLE_CFI_CLANG += -fno-sanitize-cfi-cross-dso
894		-endif
895		-ifdef CONFIG_CFI_PERMISSIVE
896		-cfi-clang-flags += -fsanitize-recover=cfi -fno-sanitize-trap=cfi
897		-endif
898		-
899		-# also disable CFI when LTO is disabled
900		-DISABLE_LTO_CLANG += $(DISABLE_CFI_CLANG)
901		-# allow disabling only clang CFI where needed
902		-export DISABLE_CFI_CLANG
903		-endif
904		-
905		-ifdef CONFIG_CFI
906		-CFI_CFLAGS := $(cfi-clang-flags)
907		-KBUILD_CFLAGS += $(CFI_CFLAGS)
908		-
909		-DISABLE_CFI := $(DISABLE_CFI_CLANG)
910		-DISABLE_LTO += $(DISABLE_CFI)
911		-export CFI_CFLAGS DISABLE_CFI
912		-endif
913		-
914	941	ifdef CONFIG_SHADOW_CALL_STACK
915	942	CC_FLAGS_SCS := -fsanitize=shadow-call-stack
916	943	KBUILD_CFLAGS += $(CC_FLAGS_SCS)
917	944	export CC_FLAGS_SCS
918	945	endif
919	946
	947	+ifdef CONFIG_LTO_CLANG
	948	+ifdef CONFIG_LTO_CLANG_THIN
	949	+CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit
	950	+KBUILD_LDFLAGS += --thinlto-cache-dir=$(extmod-prefix).thinlto-cache
	951	+else
	952	+CC_FLAGS_LTO := -flto
	953	+endif
	954	+
	955	+ifeq ($(SRCARCH),x86)
	956	+# TODO(b/182572011): Revert workaround for compiler / linker bug.
	957	+CC_FLAGS_LTO += -fvisibility=hidden
	958	+else
	959	+CC_FLAGS_LTO += -fvisibility=default
	960	+endif
	961	+
	962	+# Limit inlining across translation units to reduce binary size
	963	+KBUILD_LDFLAGS += -mllvm -import-instr-limit=5
	964	+endif
	965	+
	966	+ifdef CONFIG_LTO
	967	+KBUILD_CFLAGS += $(CC_FLAGS_LTO)
	968	+export CC_FLAGS_LTO
	969	+endif
	970	+
	971	+ifdef CONFIG_CFI_CLANG
	972	+CC_FLAGS_CFI := -fsanitize=cfi \
	973	+ -fsanitize-cfi-cross-dso \
	974	+ -fno-sanitize-cfi-canonical-jump-tables \
	975	+ -fno-sanitize-blacklist
	976	+
	977	+ifdef CONFIG_CFI_PERMISSIVE
	978	+CC_FLAGS_CFI += -fsanitize-recover=cfi \
	979	+ -fno-sanitize-trap=cfi
	980	+else
	981	+ifndef CONFIG_UBSAN_TRAP
	982	+CC_FLAGS_CFI += -ftrap-function=__ubsan_handle_cfi_check_fail_abort
	983	+endif
	984	+endif
	985	+
	986	+# If LTO flags are filtered out, we must also filter out CFI.
	987	+CC_FLAGS_LTO += $(CC_FLAGS_CFI)
	988	+KBUILD_CFLAGS += $(CC_FLAGS_CFI)
	989	+export CC_FLAGS_CFI
	990	+endif
	991	+
	992	+ifdef CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_32B
	993	+KBUILD_CFLAGS += -falign-functions=32
	994	+endif
	995	+
920	996	# arch Makefile may override CC so keep this after arch Makefile is included
921	997	NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
922	998
923	999	# warn about C99 declaration after statement
924		-KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
	1000	+KBUILD_CFLAGS += -Wdeclaration-after-statement
	1001	+
	1002	+# Variable Length Arrays (VLAs) should not be used anywhere in the kernel
	1003	+KBUILD_CFLAGS += -Wvla
925	1004
926	1005	# disable pointer signed / unsigned warnings in gcc 4.0
927		-KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
	1006	+KBUILD_CFLAGS += -Wno-pointer-sign
928	1007
929	1008	# disable stringop warnings in gcc 8+
930	1009	KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
..	..	@@ -941,31 +1020,16 @@
941	1020	KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized)
942	1021
943	1022	# disable invalid "can't wrap" optimizations for signed / pointers
944		-KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
945		-
946		-# clang sets -fmerge-all-constants by default as optimization, but this
947		-# is non-conforming behavior for C and in fact breaks the kernel, so we
948		-# need to disable it here generally.
949		-KBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants)
950		-
951		-# for gcc -fno-merge-all-constants disables everything, but it is fine
952		-# to have actual conforming behavior enabled.
953		-KBUILD_CFLAGS += $(call cc-option,-fmerge-constants)
	1023	+KBUILD_CFLAGS += -fno-strict-overflow
954	1024
955	1025	# Make sure -fstack-check isn't enabled (like gentoo apparently did)
956		-KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,)
	1026	+KBUILD_CFLAGS += -fno-stack-check
957	1027
958	1028	# conserve stack if available
959	1029	KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
960	1030
961		-# disallow errors like 'EXPORT_GPL(foo);' with missing header
962		-KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
963		-
964		-# require functions to have arguments in prototypes, not empty 'int foo()'
965		-KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
966		-
967	1031	# Prohibit date/time macros, which would make the build non-deterministic
968		-KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
	1032	+KBUILD_CFLAGS += -Werror=date-time
969	1033
970	1034	# enforce correct pointer usage
971	1035	KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types)
..	..	@@ -974,33 +1038,53 @@
974	1038	KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init)
975	1039
976	1040	# change __FILE__ to the relative path from the srctree
977		-KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
	1041	+KBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
978	1042
979		-# use the deterministic mode of AR if available
980		-KBUILD_ARFLAGS := $(call ar-option,D)
	1043	+# include additional Makefiles when needed
	1044	+include-y := scripts/Makefile.extrawarn
	1045	+include-$(CONFIG_KASAN) += scripts/Makefile.kasan
	1046	+include-$(CONFIG_KCSAN) += scripts/Makefile.kcsan
	1047	+include-$(CONFIG_UBSAN) += scripts/Makefile.ubsan
	1048	+include-$(CONFIG_KCOV) += scripts/Makefile.kcov
	1049	+include-$(CONFIG_GCC_PLUGINS) += scripts/Makefile.gcc-plugins
981	1050
982		-include scripts/Makefile.kasan
983		-include scripts/Makefile.extrawarn
984		-include scripts/Makefile.ubsan
	1051	+include $(addprefix $(srctree)/, $(include-y))
985	1052
986		-# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
987		-# last assignments
988		-KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
989		-KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS)
990		-KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS)
	1053	+# scripts/Makefile.gcc-plugins is intentionally included last.
	1054	+# Do not add $(call cc-option,...) below this line. When you build the kernel
	1055	+# from the clean source tree, the GCC plugins do not exist at this point.
991	1056
992		-# Use --build-id when available.
993		-LDFLAGS_BUILD_ID := $(call ld-option, --build-id)
994		-KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
995		-LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
	1057	+# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
	1058	+KBUILD_CPPFLAGS += $(KCPPFLAGS)
	1059	+KBUILD_AFLAGS += $(KAFLAGS)
	1060	+KBUILD_CFLAGS += $(KCFLAGS)
	1061	+
	1062	+KBUILD_LDFLAGS_MODULE += --build-id=sha1
	1063	+LDFLAGS_vmlinux += --build-id=sha1
	1064	+
	1065	+KBUILD_LDFLAGS += -z noexecstack
	1066	+KBUILD_LDFLAGS += $(call ld-option,--no-warn-rwx-segments)
996	1067
997	1068	ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
998	1069	LDFLAGS_vmlinux += $(call ld-option, -X,)
999	1070	endif
1000	1071
1001	1072	ifeq ($(CONFIG_RELR),y)
1002		-LDFLAGS_vmlinux += --pack-dyn-relocs=relr
	1073	+LDFLAGS_vmlinux += --pack-dyn-relocs=relr --use-android-relr-tags
1003	1074	endif
	1075	+
	1076	+# We never want expected sections to be placed heuristically by the
	1077	+# linker. All sections should be explicitly named in the linker script.
	1078	+ifdef CONFIG_LD_ORPHAN_WARN
	1079	+LDFLAGS_vmlinux += --orphan-handling=warn
	1080	+endif
	1081	+
	1082	+# Align the bit size of userspace programs with the kernel
	1083	+KBUILD_USERCFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS))
	1084	+KBUILD_USERLDFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS))
	1085	+
	1086	+# make the checker run with the right architecture
	1087	+CHECKFLAGS += --arch=$(ARCH)
1004	1088
1005	1089	# insure the checker run with the right endianness
1006	1090	CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
..	..	@@ -1060,26 +1144,13 @@
1060	1144	mod_compress_cmd = true
1061	1145	ifdef CONFIG_MODULE_COMPRESS
1062	1146	ifdef CONFIG_MODULE_COMPRESS_GZIP
1063		- mod_compress_cmd = gzip -n -f
	1147	+ mod_compress_cmd = $(KGZIP) -n -f
1064	1148	endif # CONFIG_MODULE_COMPRESS_GZIP
1065	1149	ifdef CONFIG_MODULE_COMPRESS_XZ
1066		- mod_compress_cmd = xz -f
	1150	+ mod_compress_cmd = $(XZ) -f
1067	1151	endif # CONFIG_MODULE_COMPRESS_XZ
1068	1152	endif # CONFIG_MODULE_COMPRESS
1069	1153	export mod_compress_cmd
1070		-
1071		-# Select initial ramdisk compression format, default is gzip(1).
1072		-# This shall be used by the dracut(8) tool while creating an initramfs image.
1073		-#
1074		-INITRD_COMPRESS-y := gzip
1075		-INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
1076		-INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
1077		-INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
1078		-INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
1079		-INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
1080		-# do not export INITRD_COMPRESS, since we didn't actually
1081		-# choose a sane default compression above.
1082		-# export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
1083	1154
1084	1155	ifdef CONFIG_MODULE_SIG_ALL
1085	1156	$(eval $(call config_filename,MODULE_SIG_KEY))
..	..	@@ -1092,9 +1163,11 @@
1092	1163
1093	1164	HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null \|\| echo -lelf)
1094	1165
	1166	+has_libelf := $(call try-run,\
	1167	+ echo "int main() {}" \| \
	1168	+ $(HOSTCC) $(KBUILD_HOSTCFLAGS) -xc -o /dev/null $(KBUILD_HOSTLDFLAGS) $(HOST_LIBELF_LIBS) -,1,0)
	1169	+
1095	1170	ifdef CONFIG_STACK_VALIDATION
1096		- has_libelf := $(call try-run,\
1097		- echo "int main() {}" \| $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0)
1098	1171	ifeq ($(has_libelf),1)
1099	1172	objtool_target := tools/objtool FORCE
1100	1173	else
..	..	@@ -1103,50 +1176,112 @@
1103	1176	endif
1104	1177	endif
1105	1178
	1179	+PHONY += resolve_btfids_clean
	1180	+
	1181	+resolve_btfids_O = $(abspath $(objtree))/tools/bpf/resolve_btfids
	1182	+
	1183	+# tools/bpf/resolve_btfids directory might not exist
	1184	+# in output directory, skip its clean in that case
	1185	+resolve_btfids_clean:
	1186	+ifneq ($(wildcard $(resolve_btfids_O)),)
	1187	+ $(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(resolve_btfids_O) clean
	1188	+endif
	1189	+
	1190	+ifdef CONFIG_BPF
	1191	+ifdef CONFIG_DEBUG_INFO_BTF
	1192	+ ifeq ($(has_libelf),1)
	1193	+ resolve_btfids_target := tools/bpf/resolve_btfids FORCE
	1194	+ else
	1195	+ ERROR_RESOLVE_BTFIDS := 1
	1196	+ endif
	1197	+endif # CONFIG_DEBUG_INFO_BTF
	1198	+endif # CONFIG_BPF
	1199	+
1106	1200	PHONY += prepare0
1107	1201
	1202	+export MODORDER := $(extmod-prefix)modules.order
	1203	+export MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps
	1204	+
	1205	+# ---------------------------------------------------------------------------
	1206	+# Kernel headers
	1207	+
	1208	+PHONY += headers
	1209	+
	1210	+#Default location for installed headers
1108	1211	ifeq ($(KBUILD_EXTMOD),)
1109		-core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
	1212	+PHONY += archheaders archscripts
	1213	+hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj
	1214	+headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts
	1215	+else
	1216	+hdr-prefix = $(KBUILD_EXTMOD)/
	1217	+hdr-inst := -f $(srctree)/scripts/Makefile.headersinst dst=$(KBUILD_EXTMOD)/usr/include objtree=$(objtree)/$(KBUILD_EXTMOD) obj
	1218	+endif
1110	1219
1111		-vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
	1220	+export INSTALL_HDR_PATH = $(objtree)/$(hdr-prefix)usr
	1221	+
	1222	+quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include
	1223	+ cmd_headers_install = \
	1224	+ mkdir -p $(INSTALL_HDR_PATH); \
	1225	+ rsync -mrl --include='/' --include='\.h' --exclude='*' \
	1226	+ $(hdr-prefix)usr/include $(INSTALL_HDR_PATH);
	1227	+
	1228	+PHONY += headers_install
	1229	+headers_install: headers
	1230	+ $(call cmd,headers_install)
	1231	+
	1232	+headers:
	1233	+ifeq ($(KBUILD_EXTMOD),)
	1234	+ $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \
	1235	+ $(error Headers not exportable for the $(SRCARCH) architecture))
	1236	+endif
	1237	+ $(Q)$(MAKE) $(hdr-inst)=$(hdr-prefix)include/uapi
	1238	+ $(Q)$(MAKE) $(hdr-inst)=$(hdr-prefix)arch/$(SRCARCH)/include/uapi
	1239	+
	1240	+ifeq ($(KBUILD_EXTMOD),)
	1241	+core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ io_uring/
	1242	+
	1243	+vmlinux-dirs := $(patsubst %/,%,$(filter %/, \
1112	1244	$(core-y) $(core-m) $(drivers-y) $(drivers-m) \
1113		- $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y)))
	1245	+ $(libs-y) $(libs-m)))
1114	1246
1115		-vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
1116		- $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-))))
	1247	+vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \
	1248	+ $(patsubst %/,%,$(filter %/, $(core-) \
	1249	+ $(drivers-) $(libs-))))
1117	1250
1118		-init-y := $(patsubst %/, %/built-in.a, $(init-y))
1119		-core-y := $(patsubst %/, %/built-in.a, $(core-y))
1120		-drivers-y := $(patsubst %/, %/built-in.a, $(drivers-y))
1121		-net-y := $(patsubst %/, %/built-in.a, $(net-y))
1122		-libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
1123		-libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y)))
1124		-virt-y := $(patsubst %/, %/built-in.a, $(virt-y))
	1251	+build-dirs := $(vmlinux-dirs)
	1252	+clean-dirs := $(vmlinux-alldirs)
	1253	+
	1254	+subdir-modorder := $(addsuffix /modules.order, $(build-dirs))
1125	1255
1126	1256	# Externally visible symbols (used by link-vmlinux.sh)
1127		-export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
1128		-export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-y)
1129		-export KBUILD_VMLINUX_LIBS := $(libs-y1)
1130		-export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
1131		-export LDFLAGS_vmlinux
1132		-# used by scripts/package/Makefile
1133		-export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools)
	1257	+KBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y))
	1258	+KBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y)))
	1259	+ifdef CONFIG_MODULES
	1260	+KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y)))
	1261	+KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y))
	1262	+else
	1263	+KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y))
	1264	+endif
	1265	+KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y))
1134	1266
1135		-vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS)
	1267	+export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
	1268	+export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
	1269	+# used by scripts/Makefile.package
	1270	+export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools)
	1271	+
	1272	+vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
1136	1273
1137	1274	# Recurse until adjust_autoksyms.sh is satisfied
1138	1275	PHONY += autoksyms_recursive
1139		-autoksyms_recursive: $(vmlinux-deps)
1140	1276	ifdef CONFIG_TRIM_UNUSED_KSYMS
1141		- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
1142		- "$(MAKE) -f $(srctree)/Makefile vmlinux"
1143		-endif
1144		-
1145	1277	# For the kernel to actually contain only the needed exported symbols,
1146	1278	# we have to build modules as well to determine what those symbols are.
1147	1279	# (this can be evaluated only once include/config/auto.conf has been included)
1148		-ifdef CONFIG_TRIM_UNUSED_KSYMS
1149		- KBUILD_MODULES := 1
	1280	+KBUILD_MODULES := 1
	1281	+
	1282	+autoksyms_recursive: descend modules.order
	1283	+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
	1284	+ "$(MAKE) -f $(srctree)/Makefile autoksyms_recursive"
1150	1285	endif
1151	1286
1152	1287	autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h)
..	..	@@ -1162,52 +1297,33 @@
1162	1297
1163	1298	# Final link of vmlinux with optional arch pass after final link
1164	1299	cmd_link-vmlinux = \
1165		- $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \
	1300	+ $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
1166	1301	$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1167	1302
	1303	+ifndef KBUILD_MIXED_TREE
1168	1304	vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
1169		-ifdef CONFIG_HEADERS_CHECK
1170		- $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
1171		-endif
1172		-ifdef CONFIG_GDB_SCRIPTS
1173		- $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
1174		-endif
1175	1305	+$(call if_changed,link-vmlinux)
1176		-
1177		-# Build samples along the rest of the kernel. This needs headers_install.
1178		-ifdef CONFIG_SAMPLES
1179		-vmlinux-dirs += samples
1180		-samples: headers_install
1181	1306	endif
	1307	+
	1308	+targets := vmlinux
1182	1309
1183	1310	# The actual objects are generated when descending,
1184	1311	# make sure no implicit rule kicks in
1185		-$(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
	1312	+$(sort $(vmlinux-deps) $(subdir-modorder)): descend ;
1186	1313
1187		-# Handle descending into subdirectories listed in $(vmlinux-dirs)
1188		-# Preset locale variables to speed up the build process. Limit locale
1189		-# tweaks to this spot to avoid wrong language settings when running
1190		-# make menuconfig etc.
1191		-# Error messages still appears in the original language
1192		-
1193		-PHONY += $(vmlinux-dirs)
1194		-$(vmlinux-dirs): prepare scripts
1195		- $(Q)$(MAKE) $(build)=$@ need-builtin=1
1196		-
1197		-define filechk_kernel.release
	1314	+filechk_kernel.release = \
1198	1315	echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion \
1199	1316	$(srctree) $(BRANCH) $(KMI_GENERATION))"
1200		-endef
1201	1317
1202	1318	# Store (new) KERNELRELEASE string in include/config/kernel.release
1203		-include/config/kernel.release: $(srctree)/Makefile FORCE
	1319	+include/config/kernel.release: FORCE
1204	1320	$(call filechk,kernel.release)
1205	1321
1206	1322	# Additional helpers built in scripts/
1207	1323	# Carefully list dependencies so we do not try to build scripts twice
1208	1324	# in parallel
1209	1325	PHONY += scripts
1210		-scripts: scripts_basic asm-generic gcc-plugins $(autoksyms_h)
	1326	+scripts: scripts_basic scripts_dtc
1211	1327	$(Q)$(MAKE) $(build)=$(@)
1212	1328
1213	1329	# Things we need to do before we recursively start building the kernel
..	..	@@ -1216,49 +1332,37 @@
1216	1332	# archprepare is used in arch Makefiles and when processed asm symlink,
1217	1333	# version.h and scripts_basic is processed / created.
1218	1334
1219		-PHONY += prepare archprepare prepare1 prepare2 prepare3
	1335	+PHONY += prepare archprepare
1220	1336
1221		-# prepare3 is used to check if we are building in a separate output directory,
1222		-# and if so do:
1223		-# 1) Check that make has not been executed in the kernel src $(srctree)
1224		-prepare3: include/config/kernel.release
1225		-ifneq ($(KBUILD_SRC),)
1226		- @$(kecho) ' Using $(srctree) as source for kernel'
1227		- $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1228		- echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1229		- echo >&2 " in the '$(srctree)' directory.";\
1230		- /bin/false; \
1231		- fi;
1232		-endif
	1337	+archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \
	1338	+ asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \
	1339	+ include/generated/autoconf.h
1233	1340
1234		-# prepare2 creates a makefile if using a separate output directory.
1235		-# From this point forward, .config has been reprocessed, so any rules
1236		-# that need to depend on updated CONFIG_* values can be checked here.
1237		-prepare2: prepare3 outputmakefile asm-generic
1238		-
1239		-prepare1: prepare2 $(version_h) $(autoksyms_h) include/generated/utsrelease.h
1240		- $(cmd_crmodverdir)
1241		-
1242		-archprepare: archheaders archscripts prepare1 scripts_basic
1243		-
1244		-prepare0: archprepare gcc-plugins
	1341	+prepare0: archprepare
	1342	+ $(Q)$(MAKE) $(build)=scripts/mod
1245	1343	$(Q)$(MAKE) $(build)=.
1246	1344
1247	1345	# All the preparing..
1248		-prepare: prepare0 prepare-objtool
	1346	+prepare: prepare0 prepare-objtool prepare-resolve_btfids
1249	1347
1250	1348	# Support for using generic headers in asm-generic
	1349	+asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj
	1350	+
1251	1351	PHONY += asm-generic uapi-asm-generic
1252	1352	asm-generic: uapi-asm-generic
1253		- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
1254		- src=asm obj=arch/$(SRCARCH)/include/generated/asm
	1353	+ $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \
	1354	+ generic=include/asm-generic
1255	1355	uapi-asm-generic:
1256		- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
1257		- src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
	1356	+ $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \
	1357	+ generic=include/uapi/asm-generic
1258	1358
1259		-PHONY += prepare-objtool
	1359	+PHONY += prepare-objtool prepare-resolve_btfids
1260	1360	prepare-objtool: $(objtool_target)
1261	1361	ifeq ($(SKIP_STACK_VALIDATION),1)
	1362	+ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL
	1363	+ @echo "error: Cannot generate __mcount_loc for CONFIG_DYNAMIC_FTRACE=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2
	1364	+ @false
	1365	+endif
1262	1366	ifdef CONFIG_UNWINDER_ORC
1263	1367	@echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2
1264	1368	@false
..	..	@@ -1267,6 +1371,11 @@
1267	1371	endif
1268	1372	endif
1269	1373
	1374	+prepare-resolve_btfids: $(resolve_btfids_target)
	1375	+ifeq ($(ERROR_RESOLVE_BTFIDS),1)
	1376	+ @echo "error: Cannot resolve BTF IDs for CONFIG_DEBUG_INFO_BTF, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2
	1377	+ @false
	1378	+endif
1270	1379	# Generate some files
1271	1380	# ---------------------------------------------------------------------------
1272	1381
..	..	@@ -1284,15 +1393,23 @@
1284	1393	echo '"$(UTS_RELEASE)" exceeds $(uts_len) characters' >&2; \
1285	1394	exit 1; \
1286	1395	fi; \
1287		- (echo \#define UTS_RELEASE \"$(UTS_RELEASE)\";)
	1396	+ echo \#define UTS_RELEASE \"$(UTS_RELEASE)\"
1288	1397	endef
1289	1398
1290	1399	define filechk_version.h
1291		- (echo \#define LINUX_VERSION_CODE $(shell \
1292		- expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 255); \
1293		- echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
	1400	+ if [ $(SUBLEVEL) -gt 255 ]; then \
	1401	+ echo \#define LINUX_VERSION_CODE $(shell \
	1402	+ expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + 255); \
	1403	+ else \
	1404	+ echo \#define LINUX_VERSION_CODE $(shell \
	1405	+ expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
	1406	+ fi; \
	1407	+ echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + \
	1408	+ ((c) > 255 ? 255 : (c)))'
1294	1409	endef
1295	1410
	1411	+$(version_h): PATCHLEVEL := $(if $(PATCHLEVEL), $(PATCHLEVEL), 0)
	1412	+$(version_h): SUBLEVEL := $(if $(SUBLEVEL), $(SUBLEVEL), 0)
1296	1413	$(version_h): FORCE
1297	1414	$(call filechk,version.h)
1298	1415	$(Q)rm -f $(old_version_h)
..	..	@@ -1305,44 +1422,18 @@
1305	1422	$(Q)find $(srctree)/include/ -name '*.h' \| xargs --max-args 1 \
1306	1423	$(srctree)/scripts/headerdep.pl -I$(srctree)/include
1307	1424
1308		-# ---------------------------------------------------------------------------
1309		-# Kernel headers
1310		-
1311		-#Default location for installed headers
1312		-export INSTALL_HDR_PATH = $(objtree)/usr
1313		-
1314		-# If we do an all arch process set dst to include/arch-$(SRCARCH)
1315		-hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(SRCARCH), dst=include)
1316		-
1317		-PHONY += archheaders
1318		-archheaders:
1319		-
1320		-PHONY += archscripts
1321		-archscripts:
1322		-
1323		-PHONY += __headers
1324		-__headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts
1325		- $(Q)$(MAKE) $(build)=scripts build_unifdef
1326		-
1327		-PHONY += headers_install_all
1328		-headers_install_all:
1329		- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1330		-
1331		-PHONY += headers_install
1332		-headers_install: __headers
1333		- $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \
1334		- $(error Headers not exportable for the $(SRCARCH) architecture))
1335		- $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include
1336		- $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst)
1337		-
1338		-PHONY += headers_check_all
1339		-headers_check_all: headers_install_all
1340		- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1341		-
	1425	+# Deprecated. It is no-op now.
1342	1426	PHONY += headers_check
1343		-headers_check: headers_install
1344		- $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
1345		- $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1
	1427	+headers_check:
	1428	+ @:
	1429	+
	1430	+ifdef CONFIG_HEADERS_INSTALL
	1431	+prepare: headers
	1432	+endif
	1433	+
	1434	+PHONY += scripts_unifdef
	1435	+scripts_unifdef: scripts_basic
	1436	+ $(Q)$(MAKE) $(build)=scripts scripts/unifdef
1346	1437
1347	1438	# ---------------------------------------------------------------------------
1348	1439	# Kernel selftest
..	..	@@ -1351,17 +1442,59 @@
1351	1442	kselftest:
1352	1443	$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests
1353	1444
1354		-PHONY += kselftest-clean
1355		-kselftest-clean:
1356		- $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean
	1445	+kselftest-%: FORCE
	1446	+ $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $*
1357	1447
1358	1448	PHONY += kselftest-merge
1359	1449	kselftest-merge:
1360	1450	$(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!))
1361		- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
1362		- -m $(objtree)/.config \
1363		- $(srctree)/tools/testing/selftests/*/config
1364		- +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
	1451	+ $(Q)find $(srctree)/tools/testing/selftests -name config \| \
	1452	+ xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config
	1453	+ $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
	1454	+
	1455	+# ---------------------------------------------------------------------------
	1456	+# Devicetree files
	1457	+
	1458	+ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),)
	1459	+dtstree := arch/$(SRCARCH)/boot/dts
	1460	+endif
	1461	+
	1462	+ifneq ($(dtstree),)
	1463	+
	1464	+%.dtb: include/config/kernel.release scripts_dtc
	1465	+ $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
	1466	+
	1467	+PHONY += dtbs dtbs_install dtbs_check
	1468	+dtbs: include/config/kernel.release scripts_dtc
	1469	+ $(Q)$(MAKE) $(build)=$(dtstree)
	1470	+
	1471	+ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),)
	1472	+export CHECK_DTBS=y
	1473	+dtbs: dt_binding_check
	1474	+endif
	1475	+
	1476	+dtbs_check: dtbs
	1477	+
	1478	+dtbs_install:
	1479	+ $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH)
	1480	+
	1481	+ifdef CONFIG_OF_EARLY_FLATTREE
	1482	+all: dtbs
	1483	+endif
	1484	+
	1485	+endif
	1486	+
	1487	+PHONY += scripts_dtc
	1488	+scripts_dtc: scripts_basic
	1489	+ $(Q)$(MAKE) $(build)=scripts/dtc
	1490	+
	1491	+ifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),)
	1492	+export CHECK_DT_BINDING=y
	1493	+endif
	1494	+
	1495	+PHONY += dt_binding_check
	1496	+dt_binding_check: scripts_dtc
	1497	+ $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings
1365	1498
1366	1499	# ---------------------------------------------------------------------------
1367	1500	# Modules
..	..	@@ -1386,21 +1519,26 @@
1386	1519	# using awk while concatenating to the final file.
1387	1520
1388	1521	PHONY += modules
1389		-modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
1390		- $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1391		- @$(kecho) ' Building modules, stage 2.';
	1522	+# if KBUILD_BUILTIN && !KBUILD_MIXED_TREE, depend on vmlinux
	1523	+modules: $(if $(KBUILD_BUILTIN), $(if $(KBUILD_MIXED_TREE),,vmlinux))
	1524	+modules: modules_check modules_prepare
1392	1525	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1393	1526
1394		-modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1395		- $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
	1527	+PHONY += modules_check
	1528	+modules_check: modules.order
	1529	+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $<
1396	1530
1397		-%/modules.builtin: include/config/auto.conf include/config/tristate.conf
1398		- $(Q)$(MAKE) $(modbuiltin)=$*
	1531	+cmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@
1399	1532
	1533	+modules.order: $(subdir-modorder) FORCE
	1534	+ $(call if_changed,modules_order)
	1535	+
	1536	+targets += modules.order
1400	1537
1401	1538	# Target to prepare building external modules
1402	1539	PHONY += modules_prepare
1403		-modules_prepare: prepare scripts
	1540	+modules_prepare: prepare
	1541	+ $(Q)$(MAKE) $(build)=scripts scripts/module.lds
1404	1542
1405	1543	# Target to install modules
1406	1544	PHONY += modules_install
..	..	@@ -1416,8 +1554,9 @@
1416	1554	rm -f $(MODLIB)/build ; \
1417	1555	ln -s $(CURDIR) $(MODLIB)/build ; \
1418	1556	fi
1419		- @cp -f $(objtree)/modules.order $(MODLIB)/
1420		- @cp -f $(objtree)/modules.builtin $(MODLIB)/
	1557	+ @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order
	1558	+ @cp -f $(mixed-build-prefix)modules.builtin $(MODLIB)/
	1559	+ @cp -f $(or $(mixed-build-prefix),$(objtree)/)modules.builtin.modinfo $(MODLIB)/
1421	1560	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1422	1561
1423	1562	# This depmod is only for convenience to give the initial
..	..	@@ -1457,52 +1596,56 @@
1457	1596	# make distclean Remove editor backup files, patch leftover files and the like
1458	1597
1459	1598	# Directories & files removed with 'make clean'
1460		-CLEAN_DIRS += $(MODVERDIR) include/ksym
	1599	+CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \
	1600	+ modules.builtin modules.builtin.modinfo modules.nsdeps \
	1601	+ compile_commands.json .thinlto-cache
1461	1602
1462	1603	# Directories & files removed with 'make mrproper'
1463		-MRPROPER_DIRS += include/config usr/include include/generated \
1464		- arch/*/include/generated .tmp_objdiff
1465		-MRPROPER_FILES += .config .config.old .version \
1466		- Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
	1604	+MRPROPER_FILES += include/config include/generated \
	1605	+ arch/$(SRCARCH)/include/generated .tmp_objdiff \
	1606	+ debian snap tar-install \
	1607	+ .config .config.old .version \
	1608	+ Module.symvers \
1467	1609	signing_key.pem signing_key.priv signing_key.x509 \
1468	1610	x509.genkey extra_certificates signing_key.x509.keyid \
1469		- signing_key.x509.signer vmlinux-gdb.py
	1611	+ signing_key.x509.signer vmlinux-gdb.py \
	1612	+ *.spec
	1613	+
	1614	+# Directories & files removed with 'make distclean'
	1615	+DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1470	1616
1471	1617	# clean - Delete most, but leave enough to build external modules
1472	1618	#
1473		-clean: rm-dirs := $(CLEAN_DIRS)
1474	1619	clean: rm-files := $(CLEAN_FILES)
1475		-clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1476	1620
1477		-PHONY += $(clean-dirs) clean archclean vmlinuxclean
1478		-$(clean-dirs):
1479		- $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
	1621	+PHONY += archclean vmlinuxclean
1480	1622
1481	1623	vmlinuxclean:
1482	1624	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1483	1625	$(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean)
1484	1626
1485		-clean: archclean vmlinuxclean
	1627	+clean: archclean vmlinuxclean resolve_btfids_clean
1486	1628
1487	1629	# mrproper - Delete all generated files, including .config
1488	1630	#
1489		-mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1490	1631	mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1491	1632	mrproper-dirs := $(addprefix _mrproper_,scripts)
1492	1633
1493		-PHONY += $(mrproper-dirs) mrproper archmrproper
	1634	+PHONY += $(mrproper-dirs) mrproper
1494	1635	$(mrproper-dirs):
1495	1636	$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1496	1637
1497		-mrproper: clean archmrproper $(mrproper-dirs)
1498		- $(call cmd,rmdirs)
	1638	+mrproper: clean $(mrproper-dirs)
1499	1639	$(call cmd,rmfiles)
1500	1640
1501	1641	# distclean
1502	1642	#
	1643	+distclean: rm-files := $(wildcard $(DISTCLEAN_FILES))
	1644	+
1503	1645	PHONY += distclean
1504	1646
1505	1647	distclean: mrproper
	1648	+ $(call cmd,rmfiles)
1506	1649	@find $(srctree) $(RCS_FIND_IGNORE) \
1507	1650	\( -name '.orig' -o -name '.rej' -o -name '*~' \
1508	1651	-o -name '.bak' -o -name '##' -o -name '*%' \
..	..	@@ -1512,13 +1655,11 @@
1512	1655
1513	1656	# Packaging of the kernel to various formats
1514	1657	# ---------------------------------------------------------------------------
1515		-package-dir := scripts/package
1516	1658
1517	1659	%src-pkg: FORCE
1518		- $(Q)$(MAKE) $(build)=$(package-dir) $@
	1660	+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@
1519	1661	%pkg: include/config/kernel.release FORCE
1520		- $(Q)$(MAKE) $(build)=$(package-dir) $@
1521		-
	1662	+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@
1522	1663
1523	1664	# Brief documentation of the typical targets used
1524	1665	# ---------------------------------------------------------------------------
..	..	@@ -1563,28 +1704,42 @@
1563	1704	echo ''
1564	1705	@echo 'Static analysers:'
1565	1706	@echo ' checkstack - Generate a list of stack hogs'
1566		- @echo ' namespacecheck - Name space analysis on compiled kernel'
1567	1707	@echo ' versioncheck - Sanity check on version.h usage'
1568	1708	@echo ' includecheck - Check for duplicate included header files'
1569	1709	@echo ' export_report - List the usages of all exported symbols'
1570		- @echo ' headers_check - Sanity check on exported headers'
1571	1710	@echo ' headerdep - Detect inclusion cycles in headers'
1572	1711	@echo ' coccicheck - Check with Coccinelle'
	1712	+ @echo ' clang-analyzer - Check with clang static analyzer'
	1713	+ @echo ' clang-tidy - Check with clang-tidy'
	1714	+ @echo ''
	1715	+ @echo 'Tools:'
	1716	+ @echo ' nsdeps - Generate missing symbol namespace dependencies'
1573	1717	@echo ''
1574	1718	@echo 'Kernel selftest:'
1575		- @echo ' kselftest - Build and run kernel selftest (run as root)'
1576		- @echo ' Build, install, and boot kernel before'
1577		- @echo ' running kselftest on it'
1578		- @echo ' kselftest-clean - Remove all generated kselftest files'
1579		- @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing'
1580		- @echo ' .config.'
	1719	+ @echo ' kselftest - Build and run kernel selftest'
	1720	+ @echo ' Build, install, and boot kernel before'
	1721	+ @echo ' running kselftest on it'
	1722	+ @echo ' Run as root for full coverage'
	1723	+ @echo ' kselftest-all - Build kernel selftest'
	1724	+ @echo ' kselftest-install - Build and install kernel selftest'
	1725	+ @echo ' kselftest-clean - Remove all generated kselftest files'
	1726	+ @echo ' kselftest-merge - Merge all the config dependencies of'
	1727	+ @echo ' kselftest to existing .config.'
1581	1728	@echo ''
	1729	+ @$(if $(dtstree), \
	1730	+ echo 'Devicetree:'; \
	1731	+ echo '* dtbs - Build device tree blobs for enabled boards'; \
	1732	+ echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \
	1733	+ echo ' dt_binding_check - Validate device tree binding documents'; \
	1734	+ echo ' dtbs_check - Validate device tree source files';\
	1735	+ echo '')
	1736	+
1582	1737	@echo 'Userspace tools targets:'
1583	1738	@echo ' use "make tools/help"'
1584	1739	@echo ' or "cd tools; make help"'
1585	1740	@echo ''
1586	1741	@echo 'Kernel packaging:'
1587		- @$(MAKE) $(build)=$(package-dir) help
	1742	+ @$(MAKE) -f $(srctree)/scripts/Makefile.package help
1588	1743	@echo ''
1589	1744	@echo 'Documentation targets:'
1590	1745	@$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
..	..	@@ -1595,7 +1750,7 @@
1595	1750	@echo ''
1596	1751	@$(if $(boards), \
1597	1752	$(foreach b, $(boards), \
1598		- printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
	1753	+ printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1599	1754	echo '')
1600	1755	@$(if $(board-dirs), \
1601	1756	$(foreach b, $(board-dirs), \
..	..	@@ -1606,10 +1761,11 @@
1606	1761	@echo ' make V=0\|1 [targets] 0 => quiet build (default), 1 => verbose build'
1607	1762	@echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1608	1763	@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1609		- @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)'
	1764	+ @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK'
	1765	+ @echo ' (sparse by default)'
1610	1766	@echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1611	1767	@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1612		- @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
	1768	+ @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where'
1613	1769	@echo ' 1: warnings which may be relevant and do not occur too often'
1614	1770	@echo ' 2: warnings which occur quite often but may still be relevant'
1615	1771	@echo ' 3: more obscure warnings, can most likely be ignored'
..	..	@@ -1638,8 +1794,20 @@
1638	1794	DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
1639	1795	linkcheckdocs dochelp refcheckdocs
1640	1796	PHONY += $(DOC_TARGETS)
1641		-$(DOC_TARGETS): scripts_basic FORCE
	1797	+$(DOC_TARGETS):
1642	1798	$(Q)$(MAKE) $(build)=Documentation $@
	1799	+
	1800	+# Misc
	1801	+# ---------------------------------------------------------------------------
	1802	+
	1803	+PHONY += scripts_gdb
	1804	+scripts_gdb: prepare0
	1805	+ $(Q)$(MAKE) $(build)=scripts/gdb
	1806	+ $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
	1807	+
	1808	+ifdef CONFIG_GDB_SCRIPTS
	1809	+all: scripts_gdb
	1810	+endif
1643	1811
1644	1812	else # KBUILD_EXTMOD
1645	1813
..	..	@@ -1660,25 +1828,17 @@
1660	1828	# Install the modules built in the module directory
1661	1829	# Assumes install directory is already created
1662	1830
1663		-# We are always building modules
	1831	+# We are always building only modules.
	1832	+KBUILD_BUILTIN :=
1664	1833	KBUILD_MODULES := 1
1665	1834
1666		-PHONY += $(objtree)/Module.symvers
1667		-$(objtree)/Module.symvers:
1668		- @test -e $(objtree)/Module.symvers \|\| ( \
1669		- echo; \
1670		- echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1671		- echo " is missing; modules will have no dependencies and modversions."; \
1672		- echo )
1673		-
1674		-module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1675		-PHONY += $(module-dirs) modules
1676		-$(module-dirs): prepare $(objtree)/Module.symvers
1677		- $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1678		-
1679		-modules: $(module-dirs)
1680		- @$(kecho) ' Building modules, stage 2.';
	1835	+build-dirs := $(KBUILD_EXTMOD)
	1836	+PHONY += modules
	1837	+modules: $(MODORDER)
1681	1838	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
	1839	+
	1840	+$(MODORDER): descend
	1841	+ @:
1682	1842
1683	1843	PHONY += modules_install
1684	1844	modules_install: _emodinst_ _emodinst_post
..	..	@@ -1693,14 +1853,12 @@
1693	1853	_emodinst_post: _emodinst_
1694	1854	$(call cmd,depmod)
1695	1855
1696		-clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
	1856	+compile_commands.json: $(extmod-prefix)compile_commands.json
	1857	+PHONY += compile_commands.json
1697	1858
1698		-PHONY += $(clean-dirs) clean
1699		-$(clean-dirs):
1700		- $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1701		-
1702		-clean: rm-dirs := $(MODVERDIR)
1703		-clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
	1859	+clean-dirs := $(KBUILD_EXTMOD)
	1860	+clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \
	1861	+ $(KBUILD_EXTMOD)/compile_commands.json $(KBUILD_EXTMOD)/.thinlto-cache
1704	1862
1705	1863	PHONY += help
1706	1864	help:
..	..	@@ -1709,29 +1867,94 @@
1709	1867	@echo ''
1710	1868	@echo ' modules - default target, build the module(s)'
1711	1869	@echo ' modules_install - install the module'
	1870	+ @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'
	1871	+ @echo ' (default: $(abspath $(INSTALL_HDR_PATH)))'
1712	1872	@echo ' clean - remove generated files in module directory only'
1713	1873	@echo ''
1714	1874
1715		-# Dummies...
1716		-PHONY += prepare scripts
1717		-prepare:
1718		- $(cmd_crmodverdir)
1719		-scripts: ;
	1875	+# no-op for external module builds
	1876	+PHONY += prepare modules_prepare
	1877	+
1720	1878	endif # KBUILD_EXTMOD
1721	1879
	1880	+# Single targets
	1881	+# ---------------------------------------------------------------------------
	1882	+# To build individual files in subdirectories, you can do like this:
	1883	+#
	1884	+# make foo/bar/baz.s
	1885	+#
	1886	+# The supported suffixes for single-target are listed in 'single-targets'
	1887	+#
	1888	+# To build only under specific subdirectories, you can do like this:
	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, $(MAKECMDGOALS)))
	1896	+single-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS)))
	1897	+
	1898	+$(single-ko): single_modpost
	1899	+ @:
	1900	+$(single-no-ko): descend
	1901	+ @:
	1902	+
	1903	+ifeq ($(KBUILD_EXTMOD),)
	1904	+# For the single build of in-tree modules, use a temporary file to avoid
	1905	+# the situation of modules_install installing an invalid modules.order.
	1906	+MODORDER := .modules.tmp
	1907	+endif
	1908	+
	1909	+PHONY += single_modpost
	1910	+single_modpost: $(single-no-ko) modules_prepare
	1911	+ $(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER)
	1912	+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
	1913	+
	1914	+KBUILD_MODULES := 1
	1915	+
	1916	+export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko))
	1917	+
	1918	+# trim unrelated directories
	1919	+build-dirs := $(foreach d, $(build-dirs), \
	1920	+ $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d)))
	1921	+
	1922	+endif
	1923	+
	1924	+ifndef CONFIG_MODULES
	1925	+KBUILD_MODULES :=
	1926	+endif
	1927	+
	1928	+# Handle descending into subdirectories listed in $(build-dirs)
	1929	+# Preset locale variables to speed up the build process. Limit locale
	1930	+# tweaks to this spot to avoid wrong language settings when running
	1931	+# make menuconfig etc.
	1932	+# Error messages still appears in the original language
	1933	+PHONY += descend $(build-dirs)
	1934	+descend: $(build-dirs)
	1935	+$(build-dirs): prepare
	1936	+ $(Q)$(MAKE) $(build)=$@ \
	1937	+ single-build=$(if $(filter-out $@/, $(filter $@/%, $(KBUILD_SINGLE_TARGETS))),1) \
	1938	+ $(if $(KBUILD_MIXED_TREE),,need-builtin=1) need-modorder=1
	1939	+
	1940	+clean-dirs := $(addprefix _clean_, $(clean-dirs))
	1941	+PHONY += $(clean-dirs) clean
	1942	+$(clean-dirs):
	1943	+ $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
	1944	+
1722	1945	clean: $(clean-dirs)
1723		- $(call cmd,rmdirs)
1724	1946	$(call cmd,rmfiles)
1725	1947	@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1726	1948	\( -name '.[aios]' -o -name '.ko' -o -name '.*.cmd' \
1727		- -o -name '.ko.' -o -name '.dtb' -o -name '.dtb.S' \
	1949	+ -o -name '.ko.' \
	1950	+ -o -name '.dtb' -o -name '.dtb.S' -o -name '*.dt.yaml' \
1728	1951	-o -name '.dwo' -o -name '.lst' \
1729		- -o -name '*.su' \
	1952	+ -o -name '.su' -o -name '.mod' \
1730	1953	-o -name '..d' -o -name '..tmp' -o -name '*.mod.c' \
1731	1954	-o -name '.lex.c' -o -name '.tab.[ch]' \
1732	1955	-o -name '*.asn1.[ch]' \
1733	1956	-o -name '*.symtypes' -o -name 'modules.order' \
1734		- -o -name modules.builtin -o -name '.tmp_.o.' \
	1957	+ -o -name '.tmp_.o.' \
1735	1958	-o -name '.c.[012].*' \
1736	1959	-o -name '*.ll' \
1737	1960	-o -name '*.gcno' \
..	..	@@ -1740,15 +1963,50 @@
1740	1963	# Generate tags for editors
1741	1964	# ---------------------------------------------------------------------------
1742	1965	quiet_cmd_tags = GEN $@
1743		- cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
	1966	+ cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@
1744	1967
1745	1968	tags TAGS cscope gtags: FORCE
1746	1969	$(call cmd,tags)
1747	1970
	1971	+# Script to generate missing namespace dependencies
	1972	+# ---------------------------------------------------------------------------
	1973	+
	1974	+PHONY += nsdeps
	1975	+nsdeps: export KBUILD_NSDEPS=1
	1976	+nsdeps: modules
	1977	+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps
	1978	+
	1979	+# Clang Tooling
	1980	+# ---------------------------------------------------------------------------
	1981	+
	1982	+quiet_cmd_gen_compile_commands = GEN $@
	1983	+ cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs))
	1984	+
	1985	+$(extmod-prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \
	1986	+ $(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \
	1987	+ $(if $(CONFIG_MODULES), $(MODORDER)) FORCE
	1988	+ $(call if_changed,gen_compile_commands)
	1989	+
	1990	+targets += $(extmod-prefix)compile_commands.json
	1991	+
	1992	+PHONY += clang-tidy clang-analyzer
	1993	+
	1994	+ifdef CONFIG_CC_IS_CLANG
	1995	+quiet_cmd_clang_tools = CHECK $<
	1996	+ cmd_clang_tools = $(PYTHON3) $(srctree)/scripts/clang-tools/run-clang-tools.py $@ $<
	1997	+
	1998	+clang-tidy clang-analyzer: $(extmod-prefix)compile_commands.json
	1999	+ $(call cmd,clang_tools)
	2000	+else
	2001	+clang-tidy clang-analyzer:
	2002	+ @echo "$@ requires CC=clang" >&2
	2003	+ @false
	2004	+endif
	2005	+
1748	2006	# Scripts to check various things for consistency
1749	2007	# ---------------------------------------------------------------------------
1750	2008
1751		-PHONY += includecheck versioncheck coccicheck namespacecheck export_report
	2009	+PHONY += includecheck versioncheck coccicheck export_report
1752	2010
1753	2011	includecheck:
1754	2012	find $(srctree)/* $(RCS_FIND_IGNORE) \
..	..	@@ -1761,16 +2019,10 @@
1761	2019	\| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1762	2020
1763	2021	coccicheck:
1764		- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1765		-
1766		-namespacecheck:
1767		- $(PERL) $(srctree)/scripts/namespace.pl
	2022	+ $(Q)$(BASH) $(srctree)/scripts/$@
1768	2023
1769	2024	export_report:
1770	2025	$(PERL) $(srctree)/scripts/export_report.pl
1771		-
1772		-endif #ifeq ($(config-targets),1)
1773		-endif #ifeq ($(mixed-targets),1)
1774	2026
1775	2027	PHONY += checkstack kernelrelease kernelversion image_name
1776	2028
..	..	@@ -1785,7 +2037,7 @@
1785	2037	endif
1786	2038	checkstack:
1787	2039	$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') \| \
1788		- $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
	2040	+ $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1789	2041
1790	2042	kernelrelease:
1791	2043	@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion \
..	..	@@ -1798,93 +2050,35 @@
1798	2050	@echo $(KBUILD_IMAGE)
1799	2051
1800	2052	# Clear a bunch of variables before executing the submake
	2053	+
	2054	+ifeq ($(quiet),silent_)
	2055	+tools_silent=s
	2056	+endif
	2057	+
1801	2058	tools/: FORCE
1802	2059	$(Q)mkdir -p $(objtree)/tools
1803		- $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/
	2060	+ $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/
1804	2061
1805	2062	tools/%: FORCE
1806	2063	$(Q)mkdir -p $(objtree)/tools
1807		- $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ $*
1808		-
1809		-# Single targets
1810		-# ---------------------------------------------------------------------------
1811		-# Single targets are compatible with:
1812		-# - build with mixed source and output
1813		-# - build with separate output dir 'make O=...'
1814		-# - external modules
1815		-#
1816		-# target-dir => where to store outputfile
1817		-# build-dir => directory in kernel source tree to use
1818		-
1819		-ifeq ($(KBUILD_EXTMOD),)
1820		- build-dir = $(patsubst %/,%,$(dir $@))
1821		- target-dir = $(dir $@)
1822		-else
1823		- zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1824		- build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1825		- target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1826		-endif
1827		-
1828		-%.s: %.c prepare scripts FORCE
1829		- $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1830		-%.i: %.c prepare scripts FORCE
1831		- $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1832		-%.o: %.c prepare scripts FORCE
1833		- $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1834		-%.lst: %.c prepare scripts FORCE
1835		- $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1836		-%.s: %.S prepare scripts FORCE
1837		- $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1838		-%.o: %.S prepare scripts FORCE
1839		- $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1840		-%.symtypes: %.c prepare scripts FORCE
1841		- $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1842		-%.ll: %.c prepare scripts FORCE
1843		- $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1844		-
1845		-# Modules
1846		-/: prepare scripts FORCE
1847		- $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1848		- $(build)=$(build-dir)
1849		-# Make sure the latest headers are built for Documentation
1850		-Documentation/ samples/: headers_install
1851		-%/: prepare scripts FORCE
1852		- $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1853		- $(build)=$(build-dir)
1854		-%.ko: prepare scripts FORCE
1855		- $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1856		- $(build)=$(build-dir) $(@:.ko=.o)
1857		- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1858		-
1859		-# FIXME Should go into a make.lib or something
1860		-# ===========================================================================
1861		-
1862		-quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1863		- cmd_rmdirs = rm -rf $(rm-dirs)
	2064	+ $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $*
1864	2065
1865	2066	quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1866		- cmd_rmfiles = rm -f $(rm-files)
	2067	+ cmd_rmfiles = rm -rf $(rm-files)
1867	2068
1868	2069	# Run depmod only if we have System.map and depmod is executable
1869	2070	quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1870	2071	cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
1871		- $(KERNELRELEASE)
	2072	+ $(KERNELRELEASE) $(mixed-build-prefix)
1872	2073
1873		-# Create temporary dir for module support files
1874		-# clean it up only when building all modules
1875		-cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1876		- $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
	2074	+# read saved command lines for existing targets
	2075	+existing-targets := $(wildcard $(sort $(targets)))
1877	2076
1878		-# read all saved command lines
	2077	+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
1879	2078
1880		-cmd_files := $(wildcard .*.cmd $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
1881		-
1882		-ifneq ($(cmd_files),)
1883		- $(cmd_files): ; # Do not try to update included dependency files
1884		- include $(cmd_files)
1885		-endif
1886		-
1887		-endif # skip-makefile
	2079	+endif # config-build
	2080	+endif # mixed-build
	2081	+endif # need-sub-make
1888	2082
1889	2083	PHONY += FORCE
1890	2084	FORCE: