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55922c9d 1VERSION = 3
c9eaa447 2PATCHLEVEL = 15
55922c9d 3SUBLEVEL = 0
c9eaa447 4EXTRAVERSION = -rc1
38dbfb59 5NAME = Shuffling Zombie Juror
1da177e4
LT
6
7# *DOCUMENTATION*
8# To see a list of typical targets execute "make help"
9# More info can be located in ./README
10# Comments in this file are targeted only to the developer, do not
11# expect to learn how to build the kernel reading this file.
12
15964864
OV
13# Do not:
14# o use make's built-in rules and variables
d384e35a 15# (this increases performance and avoids hard-to-debug behaviour);
15964864
OV
16# o print "Entering directory ...";
17MAKEFLAGS += -rR --no-print-directory
1da177e4 18
c051346b 19# Avoid funny character set dependencies
06b5dc64 20unexport LC_ALL
c051346b
PA
21LC_COLLATE=C
22LC_NUMERIC=C
07105202 23export LC_COLLATE LC_NUMERIC
c051346b 24
ab7474ea
BP
25# Avoid interference with shell env settings
26unexport GREP_OPTIONS
27
1da177e4
LT
28# We are using a recursive build, so we need to do a little thinking
29# to get the ordering right.
30#
31# Most importantly: sub-Makefiles should only ever modify files in
32# their own directory. If in some directory we have a dependency on
33# a file in another dir (which doesn't happen often, but it's often
34# unavoidable when linking the built-in.o targets which finally
35# turn into vmlinux), we will call a sub make in that other dir, and
36# after that we are sure that everything which is in that other dir
37# is now up to date.
38#
39# The only cases where we need to modify files which have global
40# effects are thus separated out and done before the recursive
41# descending is started. They are now explicitly listed as the
42# prepare rule.
43
44# To put more focus on warnings, be less verbose as default
45# Use 'make V=1' to see the full commands
46
b8b0618c
CR
47ifeq ("$(origin V)", "command line")
48 KBUILD_VERBOSE = $(V)
1da177e4
LT
49endif
50ifndef KBUILD_VERBOSE
51 KBUILD_VERBOSE = 0
52endif
53
1c7bafe7
RD
54# Call a source code checker (by default, "sparse") as part of the
55# C compilation.
56#
57# Use 'make C=1' to enable checking of only re-compiled files.
58# Use 'make C=2' to enable checking of *all* source files, regardless
59# of whether they are re-compiled or not.
60#
61# See the file "Documentation/sparse.txt" for more details, including
62# where to get the "sparse" utility.
1da177e4 63
b8b0618c
CR
64ifeq ("$(origin C)", "command line")
65 KBUILD_CHECKSRC = $(C)
1da177e4
LT
66endif
67ifndef KBUILD_CHECKSRC
68 KBUILD_CHECKSRC = 0
69endif
70
71# Use make M=dir to specify directory of external module to build
72# Old syntax make ... SUBDIRS=$PWD is still supported
73# Setting the environment variable KBUILD_EXTMOD take precedence
74ifdef SUBDIRS
75 KBUILD_EXTMOD ?= $(SUBDIRS)
76endif
1da177e4 77
b8b0618c
CR
78ifeq ("$(origin M)", "command line")
79 KBUILD_EXTMOD := $(M)
80endif
1da177e4
LT
81
82# kbuild supports saving output files in a separate directory.
83# To locate output files in a separate directory two syntaxes are supported.
84# In both cases the working directory must be the root of the kernel src.
85# 1) O=
86# Use "make O=dir/to/store/output/files/"
070b98bf 87#
1da177e4
LT
88# 2) Set KBUILD_OUTPUT
89# Set the environment variable KBUILD_OUTPUT to point to the directory
90# where the output files shall be placed.
91# export KBUILD_OUTPUT=dir/to/store/output/files/
92# make
93#
94# The O= assignment takes precedence over the KBUILD_OUTPUT environment
95# variable.
96
97
98# KBUILD_SRC is set on invocation of make in OBJ directory
99# KBUILD_SRC is not intended to be used by the regular user (for now)
100ifeq ($(KBUILD_SRC),)
101
102# OK, Make called in directory where kernel src resides
103# Do we want to locate output files in a separate directory?
b8b0618c
CR
104ifeq ("$(origin O)", "command line")
105 KBUILD_OUTPUT := $(O)
1da177e4
LT
106endif
107
108# That's our default target when none is given on the command line
4f193362 109PHONY := _all
1da177e4
LT
110_all:
111
1cacc9ab
SR
112# Cancel implicit rules on top Makefile
113$(CURDIR)/Makefile Makefile: ;
114
1da177e4
LT
115ifneq ($(KBUILD_OUTPUT),)
116# Invoke a second make in the output directory, passing relevant variables
117# check that the output directory actually exists
118saved-output := $(KBUILD_OUTPUT)
1c9e70a5
MY
119KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
120 && /bin/pwd)
1da177e4 121$(if $(KBUILD_OUTPUT),, \
1c9e70a5 122 $(error failed to create output directory "$(saved-output)"))
1da177e4 123
0b35786d
MM
124PHONY += $(MAKECMDGOALS) sub-make
125
1cacc9ab 126$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
16f89098 127 @:
0b35786d
MM
128
129sub-make: FORCE
23a45e2c
SR
130 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
131 KBUILD_SRC=$(CURDIR) \
0b35786d
MM
132 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
133 $(filter-out _all sub-make,$(MAKECMDGOALS))
1da177e4
LT
134
135# Leave processing to above invocation of make
136skip-makefile := 1
137endif # ifneq ($(KBUILD_OUTPUT),)
138endif # ifeq ($(KBUILD_SRC),)
139
140# We process the rest of the Makefile if this is the final invocation of make
141ifeq ($(skip-makefile),)
142
143# If building an external module we do not care about the all: rule
144# but instead _all depend on modules
4f193362 145PHONY += all
1da177e4
LT
146ifeq ($(KBUILD_EXTMOD),)
147_all: all
148else
149_all: modules
150endif
151
152srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
7e1c0477 153objtree := .
1da177e4
LT
154src := $(srctree)
155obj := $(objtree)
156
0f558c33 157VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
1da177e4 158
11294235 159export srctree objtree VPATH
1da177e4 160
1da177e4
LT
161
162# SUBARCH tells the usermode build what the underlying arch is. That is set
163# first, and if a usermode build is happening, the "ARCH=um" on the command
164# line overrides the setting of ARCH below. If a native build is happening,
38385f8f 165# then ARCH is assigned, getting whatever value it gets normally, and
1da177e4
LT
166# SUBARCH is subsequently ignored.
167
ffee0de4
DW
168SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
169 -e s/sun4u/sparc64/ \
1da177e4 170 -e s/arm.*/arm/ -e s/sa110/arm/ \
39990b5e 171 -e s/s390x/s390/ -e s/parisc64/parisc/ \
236b1957 172 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
f1b99392 173 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
1da177e4
LT
174
175# Cross compiling and selecting different set of gcc/bin-utils
176# ---------------------------------------------------------------------------
177#
178# When performing cross compilation for other architectures ARCH shall be set
179# to the target architecture. (See arch/* for the possibilities).
180# ARCH can be set during invocation of make:
181# make ARCH=ia64
182# Another way is to have ARCH set in the environment.
183# The default ARCH is the host where make is executed.
184
185# CROSS_COMPILE specify the prefix used for all executables used
186# during compilation. Only gcc and related bin-utils executables
187# are prefixed with $(CROSS_COMPILE).
188# CROSS_COMPILE can be set on the command line
189# make CROSS_COMPILE=ia64-linux-
190# Alternatively CROSS_COMPILE can be set in the environment.
84336466
RM
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.
1da177e4
LT
193# Default value for CROSS_COMPILE is not to prefix executables
194# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
2331d1a6 195ARCH ?= $(SUBARCH)
84336466 196CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
1da177e4
LT
197
198# Architecture as present in compile.h
6752ed90
TG
199UTS_MACHINE := $(ARCH)
200SRCARCH := $(ARCH)
1da177e4 201
d746d647
SR
202# Additional ARCH settings for x86
203ifeq ($(ARCH),i386)
204 SRCARCH := x86
205endif
206ifeq ($(ARCH),x86_64)
207 SRCARCH := x86
208endif
74b469f2 209
5e538790 210# Additional ARCH settings for sparc
e69f58c0
NK
211ifeq ($(ARCH),sparc32)
212 SRCARCH := sparc
213endif
a439fe51 214ifeq ($(ARCH),sparc64)
5e538790 215 SRCARCH := sparc
a439fe51 216endif
2fb9b1bd 217
3cc000b5
PM
218# Additional ARCH settings for sh
219ifeq ($(ARCH),sh64)
220 SRCARCH := sh
221endif
222
18aecc2b 223# Additional ARCH settings for tile
6738d321
CM
224ifeq ($(ARCH),tilepro)
225 SRCARCH := tile
226endif
18aecc2b
CM
227ifeq ($(ARCH),tilegx)
228 SRCARCH := tile
229endif
230
5e538790
SR
231# Where to locate arch specific headers
232hdr-arch := $(SRCARCH)
233
14cdd3c4 234KCONFIG_CONFIG ?= .config
41263fc6 235export KCONFIG_CONFIG
14cdd3c4 236
1da177e4
LT
237# SHELL used by kbuild
238CONFIG_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
070b98bf
SR
242HOSTCC = gcc
243HOSTCXX = g++
25583d4b 244HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
070b98bf 245HOSTCXXFLAGS = -O2
1da177e4 246
61163efa
BW
247ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
248HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
249 -Wno-missing-field-initializers -fno-delete-null-pointer-checks
250endif
251
070b98bf
SR
252# Decide whether to build built-in, modular, or both.
253# Normally, just do built-in.
1da177e4
LT
254
255KBUILD_MODULES :=
256KBUILD_BUILTIN := 1
257
3fbb43df
MY
258# If we have only "make modules", don't compile built-in objects.
259# When we're building modules with modversions, we need to consider
260# the built-in objects during the descend as well, in order to
261# make sure the checksums are up to date before we record them.
1da177e4
LT
262
263ifeq ($(MAKECMDGOALS),modules)
264 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
265endif
266
3fbb43df
MY
267# If we have "make <whatever> modules", compile modules
268# in addition to whatever we do anyway.
269# Just "make" or "make all" shall build modules as well
1da177e4
LT
270
271ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
272 KBUILD_MODULES := 1
273endif
274
275ifeq ($(MAKECMDGOALS),)
276 KBUILD_MODULES := 1
277endif
278
e579d351 279export KBUILD_MODULES KBUILD_BUILTIN
1da177e4
LT
280export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
281
282# Beautify output
283# ---------------------------------------------------------------------------
284#
285# Normally, we echo the whole command before executing it. By making
286# that echo $($(quiet)$(cmd)), we now have the possibility to set
287# $(quiet) to choose other forms of output instead, e.g.
288#
289# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
290# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
291#
292# If $(quiet) is empty, the whole command will be printed.
38385f8f 293# If it is set to "quiet_", only the short version will be printed.
070b98bf 294# If it is set to "silent_", nothing will be printed at all, since
1da177e4
LT
295# the variable $(silent_cmd_cc_o_c) doesn't exist.
296#
a58a414f 297# A simple variant is to prefix commands with $(Q) - that's useful
1da177e4
LT
298# for commands that shall be hidden in non-verbose mode.
299#
300# $(Q)ln $@ :<
301#
302# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
303# If KBUILD_VERBOSE equals 1 then the above command is displayed.
304
305ifeq ($(KBUILD_VERBOSE),1)
306 quiet =
307 Q =
308else
309 quiet=quiet_
310 Q = @
311endif
312
313# If the user is running make -s (silent mode), suppress echoing of
314# commands
315
e36aaea2
EM
316ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
317ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
318 quiet=silent_
319endif
320else # make-3.8x
e6ac89fa 321ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
1da177e4
LT
322 quiet=silent_
323endif
e36aaea2 324endif
1da177e4
LT
325
326export quiet Q KBUILD_VERBOSE
327
61163efa
BW
328ifneq ($(CC),)
329ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
330COMPILER := clang
331else
332COMPILER := gcc
333endif
334export COMPILER
335endif
1da177e4
LT
336
337# Look for make include files relative to root of kernel src
338MAKEFLAGS += --include-dir=$(srctree)
339
1cacc9ab
SR
340# We need some generic definitions (do not try to remake the file).
341$(srctree)/scripts/Kbuild.include: ;
15964864 342include $(srctree)/scripts/Kbuild.include
1da177e4
LT
343
344# Make variables (CC, etc...)
1da177e4
LT
345AS = $(CROSS_COMPILE)as
346LD = $(CROSS_COMPILE)ld
347CC = $(CROSS_COMPILE)gcc
348CPP = $(CC) -E
349AR = $(CROSS_COMPILE)ar
350NM = $(CROSS_COMPILE)nm
351STRIP = $(CROSS_COMPILE)strip
352OBJCOPY = $(CROSS_COMPILE)objcopy
353OBJDUMP = $(CROSS_COMPILE)objdump
354AWK = awk
355GENKSYMS = scripts/genksyms/genksyms
caa27b66 356INSTALLKERNEL := installkernel
1da177e4 357DEPMOD = /sbin/depmod
1da177e4
LT
358PERL = perl
359CHECK = sparse
360
80a7d1d9
HE
361CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
362 -Wbitwise -Wno-return-void $(CF)
6588169d
SR
363CFLAGS_MODULE =
364AFLAGS_MODULE =
365LDFLAGS_MODULE =
1da177e4
LT
366CFLAGS_KERNEL =
367AFLAGS_KERNEL =
2521f2c2 368CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
1da177e4
LT
369
370
abbf1590
DH
371# Use USERINCLUDE when you must reference the UAPI directories only.
372USERINCLUDE := \
373 -I$(srctree)/arch/$(hdr-arch)/include/uapi \
374 -Iarch/$(hdr-arch)/include/generated/uapi \
375 -I$(srctree)/include/uapi \
376 -Iinclude/generated/uapi \
377 -include $(srctree)/include/linux/kconfig.h
378
1da177e4
LT
379# Use LINUXINCLUDE when you must reference the include/ directory.
380# Needed to be compatible with the O= option
abbf1590
DH
381LINUXINCLUDE := \
382 -I$(srctree)/arch/$(hdr-arch)/include \
383 -Iarch/$(hdr-arch)/include/generated \
384 $(if $(KBUILD_SRC), -I$(srctree)/include) \
385 -Iinclude \
386 $(USERINCLUDE)
1da177e4 387
d8672b40 388KBUILD_CPPFLAGS := -D__KERNEL__
1da177e4 389
a0f97e06 390KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
94bed2a9 391 -fno-strict-aliasing -fno-common \
a8735821 392 -Werror-implicit-function-declaration \
a3ca86ae 393 -Wno-format-security \
61163efa 394 $(call cc-option,-fno-delete-null-pointer-checks,)
80c00ba9
SR
395KBUILD_AFLAGS_KERNEL :=
396KBUILD_CFLAGS_KERNEL :=
222d394d 397KBUILD_AFLAGS := -D__ASSEMBLY__
6588169d
SR
398KBUILD_AFLAGS_MODULE := -DMODULE
399KBUILD_CFLAGS_MODULE := -DMODULE
400KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
1da177e4 401
f1d28fb0
RZ
402# Read KERNELRELEASE from include/config/kernel.release (if it exists)
403KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
cacd54ef 404KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
cb58455c 405
070b98bf 406export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
80ef88d6 407export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
caa27b66
SR
408export CPP AR NM STRIP OBJCOPY OBJDUMP
409export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
070b98bf 410export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
1da177e4 411
06c5040c 412export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
2521f2c2 413export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
222d394d 414export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
6588169d 415export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
80c00ba9 416export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
40df759e 417export KBUILD_ARFLAGS
1da177e4
LT
418
419# When compiling out-of-tree modules, put MODVERDIR in the module
420# tree rather than in the kernel tree. The kernel tree might
421# even be read-only.
422export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
423
1da177e4
LT
424# Files to ignore in find ... statements
425
ae63b2d7
PB
426export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
427 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
428 -prune -o
450c6076
JJ
429export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
430 --exclude CVS --exclude .pc --exclude .hg --exclude .git
1da177e4
LT
431
432# ===========================================================================
433# Rules shared between *config targets and build targets
434
435# Basic helpers built in scripts/
4f193362 436PHONY += scripts_basic
1da177e4
LT
437scripts_basic:
438 $(Q)$(MAKE) $(build)=scripts/basic
638adb05 439 $(Q)rm -f .tmp_quiet_recordmcount
1da177e4 440
cd05e6bd
JB
441# To avoid any implicit rule to kick in, define an empty command.
442scripts/basic/%: scripts_basic ;
443
4f193362 444PHONY += outputmakefile
fd5f0cd6
JB
445# outputmakefile generates a Makefile in the output directory, if using a
446# separate output directory. This allows convenient use of make in the
447# output directory.
1da177e4 448outputmakefile:
fd5f0cd6 449ifneq ($(KBUILD_SRC),)
92979997 450 $(Q)ln -fsn $(srctree) source
fd5f0cd6
JB
451 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
452 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
453endif
1da177e4 454
d8ecc5cd
SR
455# Support for using generic headers in asm-generic
456PHONY += asm-generic
457asm-generic:
458 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
3c5994c8
CM
459 src=asm obj=arch/$(SRCARCH)/include/generated/asm
460 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
461 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
d8ecc5cd 462
1da177e4
LT
463# To make sure we do not include .config for any of the *config targets
464# catch them early, and hand them over to scripts/kconfig/Makefile
465# It is allowed to specify more targets when calling make, including
466# mixing *config targets and build targets.
070b98bf 467# For example 'make oldconfig all'.
1da177e4
LT
468# Detect when mixed targets is specified, and make a second invocation
469# of make so .config is not included in this case either (for *config).
470
10b63956 471version_h := include/generated/uapi/linux/version.h
d183e6f5 472
3eb3c740 473no-dot-config-targets := clean mrproper distclean \
f4ed1009 474 cscope gtags TAGS tags help %docs check% coccicheck \
d183e6f5 475 $(version_h) headers_% archheaders archscripts \
4aed2fd8 476 kernelversion %src-pkg
1da177e4
LT
477
478config-targets := 0
479mixed-targets := 0
480dot-config := 1
481
482ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
483 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
484 dot-config := 0
485 endif
486endif
487
488ifeq ($(KBUILD_EXTMOD),)
489 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
490 config-targets := 1
491 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
492 mixed-targets := 1
493 endif
494 endif
495endif
496
497ifeq ($(mixed-targets),1)
498# ===========================================================================
499# We're called with mixed targets (*config and build targets).
500# Handle them one by one.
501
9319f453
MY
502PHONY += $(MAKECMDGOALS) __build_one_by_one
503
504$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
505 @:
506
507__build_one_by_one:
508 $(Q)set -e; \
509 for i in $(MAKECMDGOALS); do \
510 $(MAKE) -f $(srctree)/Makefile $$i; \
511 done
1da177e4
LT
512
513else
514ifeq ($(config-targets),1)
515# ===========================================================================
516# *config targets only - make sure prerequisites are updated, and descend
517# in scripts/kconfig to make the *config target
518
519# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
520# KBUILD_DEFCONFIG may point out an alternative default configuration
521# used for 'make defconfig'
74b469f2 522include $(srctree)/arch/$(SRCARCH)/Makefile
61bee204 523export KBUILD_DEFCONFIG KBUILD_KCONFIG
1da177e4 524
31110ebb
SR
525config: scripts_basic outputmakefile FORCE
526 $(Q)mkdir -p include/linux include/config
527 $(Q)$(MAKE) $(build)=scripts/kconfig $@
528
529%config: scripts_basic outputmakefile FORCE
c955ccaf 530 $(Q)mkdir -p include/linux include/config
1da177e4
LT
531 $(Q)$(MAKE) $(build)=scripts/kconfig $@
532
533else
534# ===========================================================================
535# Build targets only - this includes vmlinux, arch specific targets, clean
536# targets and others. In general all targets except *config targets.
537
538ifeq ($(KBUILD_EXTMOD),)
539# Additional helpers built in scripts/
540# Carefully list dependencies so we do not try to build scripts twice
070b98bf 541# in parallel
4f193362 542PHONY += scripts
a54292f5
AS
543scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
544 asm-generic
1da177e4
LT
545 $(Q)$(MAKE) $(build)=$(@)
546
1da177e4
LT
547# Objects we will link into vmlinux / subdirs we need to visit
548init-y := init/
4d2acfbf 549drivers-y := drivers/ sound/ firmware/
1da177e4
LT
550net-y := net/
551libs-y := lib/
552core-y := usr/
553endif # KBUILD_EXTMOD
554
555ifeq ($(dot-config),1)
9ee4e336
SR
556# Read in config
557-include include/config/auto.conf
1da177e4 558
9ee4e336 559ifeq ($(KBUILD_EXTMOD),)
1da177e4
LT
560# Read in dependencies to all Kconfig* files, make sure to run
561# oldconfig if changes are detected.
c955ccaf 562-include include/config/auto.conf.cmd
1da177e4 563
1da177e4 564# To avoid any implicit rule to kick in, define an empty command
14cdd3c4 565$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
1da177e4 566
c955ccaf 567# If .config is newer than include/config/auto.conf, someone tinkered
752625cf 568# with it and forgot to run make oldconfig.
070b98bf 569# if auto.conf.cmd is missing then we are probably in a cleaned tree so
752625cf 570# we execute the config step to be sure to catch updated Kconfig files
bc081dd6 571include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
1da177e4 572 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
3041e47e 573else
264a2683 574# external modules needs include/generated/autoconf.h and include/config/auto.conf
9ee4e336
SR
575# but do not care if they are up-to-date. Use auto.conf to trigger the test
576PHONY += include/config/auto.conf
577
578include/config/auto.conf:
264a2683 579 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
5369f550
MM
580 echo >&2; \
581 echo >&2 " ERROR: Kernel configuration is invalid."; \
582 echo >&2 " include/generated/autoconf.h or $@ are missing.";\
583 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
584 echo >&2 ; \
9ee4e336
SR
585 /bin/false)
586
587endif # KBUILD_EXTMOD
c955ccaf 588
1da177e4
LT
589else
590# Dummy target needed, because used as prerequisite
c955ccaf 591include/config/auto.conf: ;
9ee4e336 592endif # $(dot-config)
1da177e4
LT
593
594# The all: target is the default when no target is given on the
595# command line.
596# This allow a user to issue only 'make' to build a kernel including modules
c8447161 597# Defaults to vmlinux, but the arch makefile usually adds further targets
1da177e4
LT
598all: vmlinux
599
600ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
e74fc973 601KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
1da177e4 602else
a0f97e06 603KBUILD_CFLAGS += -O2
1da177e4
LT
604endif
605
a1f42beb
PM
606include $(srctree)/arch/$(SRCARCH)/Makefile
607
1873e870
AK
608ifdef CONFIG_READABLE_ASM
609# Disable optimizations that make assembler listings hard to read.
610# reorder blocks reorders the control in the function
611# ipa clone creates specialized cloned functions
612# partial inlining inlines only parts of functions
613KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
614 $(call cc-option,-fno-ipa-cp-clone,) \
615 $(call cc-option,-fno-partial-inlining)
616endif
617
08f67461 618ifneq ($(CONFIG_FRAME_WARN),0)
35bb5b1e
AK
619KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
620endif
621
19952a92 622# Handle stack protector mode.
8779657d 623ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
19952a92
KC
624 stackp-flag := -fstack-protector
625 ifeq ($(call cc-option, $(stackp-flag)),)
6c15b327 626 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
27b2a49a 627 -fstack-protector not supported by compiler)
19952a92 628 endif
6c15b327
JB
629else
630ifdef CONFIG_CC_STACKPROTECTOR_STRONG
8779657d
KC
631 stackp-flag := -fstack-protector-strong
632 ifeq ($(call cc-option, $(stackp-flag)),)
633 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
634 -fstack-protector-strong not supported by compiler)
635 endif
19952a92
KC
636else
637 # Force off for distro compilers that enable stack protector by default.
638 stackp-flag := $(call cc-option, -fno-stack-protector)
5d707e9c 639endif
6c15b327 640endif
19952a92 641KBUILD_CFLAGS += $(stackp-flag)
e06b8b98 642
61163efa
BW
643ifeq ($(COMPILER),clang)
644KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
645KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
646KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
647KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
648KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
649# Quiet clang warning: comparison of unsigned expression < 0 is always false
650KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
651# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
652# source of a reference will be _MergedGlobals and not on of the whitelisted names.
653# See modpost pattern 2
654KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
655else
656
af0e5d56
DJ
657# This warning generated too much noise in a regular build.
658# Use make W=1 to enable this warning (see scripts/Makefile.build)
8417da6f 659KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
61163efa 660endif
af0e5d56 661
1da177e4 662ifdef CONFIG_FRAME_POINTER
a0f97e06 663KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
1da177e4 664else
7e9501fd
RV
665# Some targets (ARM with Thumb2, for example), can't be built with frame
666# pointers. For those, we don't have FUNCTION_TRACER automatically
667# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
668# incompatible with -fomit-frame-pointer with current GCC, so we don't use
669# -fomit-frame-pointer with FUNCTION_TRACER.
670ifndef CONFIG_FUNCTION_TRACER
a0f97e06 671KBUILD_CFLAGS += -fomit-frame-pointer
1da177e4 672endif
7e9501fd 673endif
1da177e4
LT
674
675ifdef CONFIG_DEBUG_INFO
a0f97e06 676KBUILD_CFLAGS += -g
7db43632 677KBUILD_AFLAGS += -Wa,--gdwarf-2
1da177e4
LT
678endif
679
d6f4ceb7 680ifdef CONFIG_DEBUG_INFO_REDUCED
e82c4bb8
AK
681KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
682 $(call cc-option,-fno-var-tracking)
d6f4ceb7
AK
683endif
684
606576ce 685ifdef CONFIG_FUNCTION_TRACER
a2546fae
SR
686ifdef CONFIG_HAVE_FENTRY
687CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
688endif
689KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
690KBUILD_AFLAGS += $(CC_USING_FENTRY)
72441cb1 691ifdef CONFIG_DYNAMIC_FTRACE
cf4db259 692 ifdef CONFIG_HAVE_C_RECORDMCOUNT
72441cb1
SR
693 BUILD_C_RECORDMCOUNT := y
694 export BUILD_C_RECORDMCOUNT
695 endif
696endif
16444a8a
ACM
697endif
698
91341d4b
SR
699# We trigger additional mismatches with less inlining
700ifdef CONFIG_DEBUG_SECTION_MISMATCH
701KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
702endif
703
e8e69931 704# arch Makefile may override CC so keep this after arch Makefile is included
e8f5bdb0 705NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
e8e69931
SR
706CHECKFLAGS += $(NOSTDINC_FLAGS)
707
1da177e4 708# warn about C99 declaration after statement
a0f97e06 709KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
1da177e4 710
070b98bf 711# disable pointer signed / unsigned warnings in gcc 4.0
8417da6f 712KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
1da177e4 713
fe8d0a41 714# disable invalid "can't wrap" optimizations for signed / pointers
a137802e 715KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
d0115552 716
8f7f5c9f
AK
717# conserve stack if available
718KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
719
80970472
ST
720# disallow errors like 'EXPORT_GPL(foo);' with missing header
721KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
722
723# require functions to have arguments in prototypes, not empty 'int foo()'
724KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
725
fe7c36c7
JT
726# Prohibit date/time macros, which would make the build non-deterministic
727KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
728
40df759e
MM
729# use the deterministic mode of AR if available
730KBUILD_ARFLAGS := $(call ar-option,D)
731
bf5438fc
JB
732# check for 'asm goto'
733ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
734 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
735endif
736
a86fe353
MY
737include $(srctree)/scripts/Makefile.extrawarn
738
06c5040c 739# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
70cfe026
OÇ
740KBUILD_CPPFLAGS += $(KCPPFLAGS)
741KBUILD_AFLAGS += $(KAFLAGS)
742KBUILD_CFLAGS += $(KCFLAGS)
52bcc330 743
18991197
RM
744# Use --build-id when available.
745LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
f86fd306 746 $(call cc-ldoption, -Wl$(comma)--build-id,))
6588169d 747KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
18991197
RM
748LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
749
5d7d18f5 750ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
d79a2719 751LDFLAGS_vmlinux += $(call ld-option, -X,)
5d7d18f5
DH
752endif
753
1da177e4 754# Default kernel image to build when no specific target is given.
070b98bf 755# KBUILD_IMAGE may be overruled on the command line or
1da177e4
LT
756# set in the environment
757# Also any assignments in arch/$(ARCH)/Makefile take precedence over
758# this default value
759export KBUILD_IMAGE ?= vmlinux
760
761#
762# INSTALL_PATH specifies where to place the updated kernel and system map
763# images. Default is /boot, but you can set it to other values
764export INSTALL_PATH ?= /boot
765
f4d4ffc0
JC
766#
767# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
768# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
769# an argument if needed. Otherwise it defaults to the kernel install path
770#
771export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
772
1da177e4
LT
773#
774# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
775# relocations required by build roots. This is not defined in the
070b98bf 776# makefile but the argument can be passed to make if needed.
1da177e4
LT
777#
778
df9df036 779MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
1da177e4
LT
780export MODLIB
781
ac031f26 782#
3fbb43df
MY
783# INSTALL_MOD_STRIP, if defined, will cause modules to be
784# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
785# the default option --strip-debug will be used. Otherwise,
786# INSTALL_MOD_STRIP value will be used as the options to the strip command.
2ea03891 787
ac031f26
TT
788ifdef INSTALL_MOD_STRIP
789ifeq ($(INSTALL_MOD_STRIP),1)
2ea03891 790mod_strip_cmd = $(STRIP) --strip-debug
ac031f26 791else
2ea03891 792mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
ac031f26
TT
793endif # INSTALL_MOD_STRIP=1
794else
2ea03891 795mod_strip_cmd = true
ac031f26
TT
796endif # INSTALL_MOD_STRIP
797export mod_strip_cmd
798
1bf49dd4 799# Select initial ramdisk compression format, default is gzip(1).
800# This shall be used by the dracut(8) tool while creating an initramfs image.
801#
7ac18156
JB
802INITRD_COMPRESS-y := gzip
803INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
804INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
805INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
806INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
807INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
b7000ade
LT
808# do not export INITRD_COMPRESS, since we didn't actually
809# choose a sane default compression above.
810# export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
1da177e4 811
d9d8d7ed 812ifdef CONFIG_MODULE_SIG_ALL
e2a666d5
RR
813MODSECKEY = ./signing_key.priv
814MODPUBKEY = ./signing_key.x509
815export MODPUBKEY
4bc9410c 816mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY)
e2a666d5
RR
817else
818mod_sign_cmd = true
819endif
820export mod_sign_cmd
821
822
1da177e4 823ifeq ($(KBUILD_EXTMOD),)
3a65dfe8 824core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
1da177e4
LT
825
826vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
827 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
828 $(net-y) $(net-m) $(libs-y) $(libs-m)))
829
830vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
831 $(init-n) $(init-) \
832 $(core-n) $(core-) $(drivers-n) $(drivers-) \
833 $(net-n) $(net-) $(libs-n) $(libs-))))
834
835init-y := $(patsubst %/, %/built-in.o, $(init-y))
836core-y := $(patsubst %/, %/built-in.o, $(core-y))
837drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
838net-y := $(patsubst %/, %/built-in.o, $(net-y))
839libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
840libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
841libs-y := $(libs-y1) $(libs-y2)
842
1f2bfbd0 843# Externally visible symbols (used by link-vmlinux.sh)
95698570
SR
844export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
845export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
846export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
1f2bfbd0 847export LDFLAGS_vmlinux
6615d6c3
MM
848# used by scripts/pacmage/Makefile
849export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt)
9bb48247 850
1f2bfbd0 851vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
1da177e4 852
1f2bfbd0
SR
853# Final link of vmlinux
854 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
855quiet_cmd_link-vmlinux = LINK $@
1da177e4 856
1f2bfbd0
SR
857# Include targets which we want to
858# execute if the rest of the kernel build went well.
859vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
0f836e5f 860ifdef CONFIG_HEADERS_CHECK
0e7af8d0 861 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
267c4025
MD
862endif
863ifdef CONFIG_SAMPLES
864 $(Q)$(MAKE) $(build)=samples
3794f3e8
RD
865endif
866ifdef CONFIG_BUILD_DOCSRC
867 $(Q)$(MAKE) $(build)=Documentation
0f836e5f 868endif
1f2bfbd0 869 +$(call if_changed,link-vmlinux)
741f98fe 870
38385f8f 871# The actual objects are generated when descending,
1da177e4 872# make sure no implicit rule kicks in
1f2bfbd0 873$(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
1da177e4
LT
874
875# Handle descending into subdirectories listed in $(vmlinux-dirs)
876# Preset locale variables to speed up the build process. Limit locale
877# tweaks to this spot to avoid wrong language settings when running
878# make menuconfig etc.
879# Error messages still appears in the original language
880
4f193362 881PHONY += $(vmlinux-dirs)
5bb78269 882$(vmlinux-dirs): prepare scripts
1da177e4
LT
883 $(Q)$(MAKE) $(build)=$@
884
0d0e7718
MM
885define filechk_kernel.release
886 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
887endef
888
83a35e36 889# Store (new) KERNELRELEASE string in include/config/kernel.release
f1d28fb0 890include/config/kernel.release: include/config/auto.conf FORCE
0d0e7718 891 $(call filechk,kernel.release)
cb58455c
SR
892
893
1da177e4 894# Things we need to do before we recursively start building the kernel
5bb78269
SR
895# or the modules are listed in "prepare".
896# A multi level approach is used. prepareN is processed before prepareN-1.
897# archprepare is used in arch Makefiles and when processed asm symlink,
898# version.h and scripts_basic is processed / created.
1da177e4 899
5bb78269 900# Listed in dependency order
4f193362 901PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
5bb78269 902
86feeaa8 903# prepare3 is used to check if we are building in a separate output directory,
1da177e4
LT
904# and if so do:
905# 1) Check that make has not been executed in the kernel src $(srctree)
f1d28fb0 906prepare3: include/config/kernel.release
1da177e4 907ifneq ($(KBUILD_SRC),)
fd54f502 908 @$(kecho) ' Using $(srctree) as source for kernel'
c955ccaf 909 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
5369f550
MM
910 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
911 echo >&2 " in the '$(srctree)' directory.";\
1da177e4
LT
912 /bin/false; \
913 fi;
1da177e4
LT
914endif
915
86feeaa8 916# prepare2 creates a makefile if using a separate output directory
d8ecc5cd 917prepare2: prepare3 outputmakefile asm-generic
1da177e4 918
d183e6f5 919prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
f7f16b77 920 include/config/auto.conf
7bb9d092 921 $(cmd_crmodverdir)
1da177e4 922
6520fe55 923archprepare: archheaders archscripts prepare1 scripts_basic
5bb78269
SR
924
925prepare0: archprepare FORCE
8d36a623 926 $(Q)$(MAKE) $(build)=.
86feeaa8 927
1da177e4 928# All the preparing..
d395efb5 929prepare: prepare0
1da177e4 930
1da177e4
LT
931# Generate some files
932# ---------------------------------------------------------------------------
933
934# KERNELRELEASE can change from a few different places, meaning version.h
935# needs to be updated, so this check is forced on all builds
936
937uts_len := 64
63104eec
SR
938define filechk_utsrelease.h
939 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
940 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
941 exit 1; \
942 fi; \
943 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
944endef
1da177e4
LT
945
946define filechk_version.h
450c6076
JJ
947 (echo \#define LINUX_VERSION_CODE $(shell \
948 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
63104eec 949 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1da177e4
LT
950endef
951
d183e6f5 952$(version_h): $(srctree)/Makefile FORCE
1da177e4
LT
953 $(call filechk,version.h)
954
273b281f 955include/generated/utsrelease.h: include/config/kernel.release FORCE
63104eec
SR
956 $(call filechk,utsrelease.h)
957
179efcb4
VN
958PHONY += headerdep
959headerdep:
9663d989
PF
960 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
961 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
179efcb4 962
1da177e4
LT
963# ---------------------------------------------------------------------------
964
4f193362 965PHONY += depend dep
1da177e4
LT
966depend dep:
967 @echo '*** Warning: make $@ is unnecessary now.'
968
88ecf814
DW
969# ---------------------------------------------------------------------------
970# Firmware install
971INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
972export INSTALL_FW_PATH
973
974PHONY += firmware_install
975firmware_install: FORCE
976 @mkdir -p $(objtree)/firmware
977 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
978
8d730cfb
DW
979# ---------------------------------------------------------------------------
980# Kernel headers
8d730cfb 981
e6883b18
SR
982#Default location for installed headers
983export INSTALL_HDR_PATH = $(objtree)/usr
6d716275 984
e6883b18 985hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
2fb9b1bd
SR
986
987# If we do an all arch process set dst to asm-$(hdr-arch)
988hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
e6883b18 989
052ad274
PA
990PHONY += archheaders
991archheaders:
992
6520fe55
PA
993PHONY += archscripts
994archscripts:
995
e6883b18 996PHONY += __headers
d183e6f5 997__headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
e1b702cf 998 $(Q)$(MAKE) $(build)=scripts build_unifdef
e6883b18
SR
999
1000PHONY += headers_install_all
2fb9b1bd
SR
1001headers_install_all:
1002 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
6d716275 1003
8d730cfb 1004PHONY += headers_install
e6883b18 1005headers_install: __headers
10b63956
DH
1006 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
1007 $(error Headers not exportable for the $(SRCARCH) architecture))
1008 $(Q)$(MAKE) $(hdr-inst)=include/uapi
1009 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
8d730cfb 1010
1f85712e
MF
1011PHONY += headers_check_all
1012headers_check_all: headers_install_all
2fb9b1bd 1013 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1f85712e 1014
68475359
DW
1015PHONY += headers_check
1016headers_check: headers_install
10b63956
DH
1017 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1018 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
68475359 1019
1da177e4
LT
1020# ---------------------------------------------------------------------------
1021# Modules
1022
1023ifdef CONFIG_MODULES
1024
070b98bf 1025# By default, build modules as well
1da177e4 1026
73d1393e 1027all: modules
1da177e4 1028
3fbb43df 1029# Build modules
551559e1 1030#
3fbb43df
MY
1031# A module can be listed more than once in obj-m resulting in
1032# duplicate lines in modules.order files. Those are removed
1033# using awk while concatenating to the final file.
1da177e4 1034
4f193362 1035PHONY += modules
2da30e70 1036modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
551559e1 1037 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
fd54f502 1038 @$(kecho) ' Building modules, stage 2.';
b805aa0e 1039 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
44463f7d 1040 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1da177e4 1041
a6c36632
MM
1042modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1043 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1044
73d1393e 1045%/modules.builtin: include/config/auto.conf
a6c36632
MM
1046 $(Q)$(MAKE) $(modbuiltin)=$*
1047
1da177e4
LT
1048
1049# Target to prepare building external modules
4f193362 1050PHONY += modules_prepare
5bb78269 1051modules_prepare: prepare scripts
1da177e4
LT
1052
1053# Target to install modules
4f193362 1054PHONY += modules_install
1da177e4
LT
1055modules_install: _modinst_ _modinst_post
1056
4f193362 1057PHONY += _modinst_
2da30e70 1058_modinst_:
1da177e4
LT
1059 @rm -rf $(MODLIB)/kernel
1060 @rm -f $(MODLIB)/source
1061 @mkdir -p $(MODLIB)/kernel
1062 @ln -s $(srctree) $(MODLIB)/source
1063 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1064 rm -f $(MODLIB)/build ; \
7e1c0477 1065 ln -s $(CURDIR) $(MODLIB)/build ; \
1da177e4 1066 fi
551559e1 1067 @cp -f $(objtree)/modules.order $(MODLIB)/
bc081dd6 1068 @cp -f $(objtree)/modules.builtin $(MODLIB)/
b805aa0e 1069 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4 1070
50a8ec31 1071# This depmod is only for convenience to give the initial
1da177e4
LT
1072# boot a modules.dep even before / is mounted read-write. However the
1073# boot script depmod is the master version.
4f193362 1074PHONY += _modinst_post
6d128e1e 1075_modinst_post: _modinst_
88ecf814 1076 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
50a8ec31 1077 $(call cmd,depmod)
1da177e4 1078
d890f510
JB
1079ifeq ($(CONFIG_MODULE_SIG), y)
1080PHONY += modules_sign
1081modules_sign:
1082 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1083endif
1084
1da177e4
LT
1085else # CONFIG_MODULES
1086
1087# Modules not configured
1088# ---------------------------------------------------------------------------
1089
1090modules modules_install: FORCE
5369f550
MM
1091 @echo >&2
1092 @echo >&2 "The present kernel configuration has modules disabled."
1093 @echo >&2 "Type 'make config' and enable loadable module support."
1094 @echo >&2 "Then build a kernel with module support enabled."
1095 @echo >&2
1da177e4
LT
1096 @exit 1
1097
1098endif # CONFIG_MODULES
1099
1da177e4
LT
1100###
1101# Cleaning is done on three levels.
1102# make clean Delete most generated files
1103# Leave enough to build external modules
1104# make mrproper Delete the current configuration, and all generated files
1105# make distclean Remove editor backup files, patch leftover files and the like
1106
1107# Directories & files removed with 'make clean'
1108CLEAN_DIRS += $(MODVERDIR)
1da177e4
LT
1109
1110# Directories & files removed with 'make mrproper'
d8ecc5cd 1111MRPROPER_DIRS += include/config usr/include include/generated \
3fbb43df 1112 arch/*/include/generated .tmp_objdiff
d183e6f5 1113MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
d5b71936
RR
1114 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1115 signing_key.priv signing_key.x509 x509.genkey \
1116 extra_certificates signing_key.x509.keyid \
9c8cdb71 1117 signing_key.x509.signer include/linux/version.h
1da177e4
LT
1118
1119# clean - Delete most, but leave enough to build external modules
1120#
1121clean: rm-dirs := $(CLEAN_DIRS)
1122clean: rm-files := $(CLEAN_FILES)
fb68d4be 1123clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1da177e4 1124
bd1ee804 1125PHONY += $(clean-dirs) clean archclean vmlinuxclean
1da177e4
LT
1126$(clean-dirs):
1127 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1128
bd1ee804
PM
1129vmlinuxclean:
1130 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1131
1132clean: archclean vmlinuxclean
1da177e4
LT
1133
1134# mrproper - Delete all generated files, including .config
1135#
1136mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1137mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1138mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1139
4f193362 1140PHONY += $(mrproper-dirs) mrproper archmrproper
1da177e4
LT
1141$(mrproper-dirs):
1142 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1143
1144mrproper: clean archmrproper $(mrproper-dirs)
1145 $(call cmd,rmdirs)
1146 $(call cmd,rmfiles)
1147
1148# distclean
1149#
4f193362 1150PHONY += distclean
1da177e4
LT
1151
1152distclean: mrproper
1153 @find $(srctree) $(RCS_FIND_IGNORE) \
070b98bf 1154 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1da177e4 1155 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
a03fcb50 1156 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
1da177e4
LT
1157 -type f -print | xargs rm -f
1158
1159
1160# Packaging of the kernel to various formats
1161# ---------------------------------------------------------------------------
1162# rpm target kept for backward compatibility
1163package-dir := $(srctree)/scripts/package
1164
bafb6747
ACM
1165%src-pkg: FORCE
1166 $(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6d 1167%pkg: include/config/kernel.release FORCE
6c2133e1 1168 $(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6d 1169rpm: include/config/kernel.release FORCE
6c2133e1 1170 $(Q)$(MAKE) $(build)=$(package-dir) $@
1da177e4
LT
1171
1172
1173# Brief documentation of the typical targets used
1174# ---------------------------------------------------------------------------
1175
5dffbe81 1176boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1da177e4 1177boards := $(notdir $(boards))
5dffbe81
SB
1178board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1179board-dirs := $(sort $(notdir $(board-dirs:/=)))
1da177e4
LT
1180
1181help:
1182 @echo 'Cleaning targets:'
5ea084ef 1183 @echo ' clean - Remove most generated files but keep the config and'
5cc8d246 1184 @echo ' enough build support to build external modules'
5ea084ef 1185 @echo ' mrproper - Remove all generated files + config + various backup files'
5cc8d246 1186 @echo ' distclean - mrproper + remove editor backup and patch files'
1da177e4
LT
1187 @echo ''
1188 @echo 'Configuration targets:'
1189 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1190 @echo ''
1191 @echo 'Other generic targets:'
1192 @echo ' all - Build all targets marked with [*]'
1193 @echo '* vmlinux - Build the bare kernel'
1194 @echo '* modules - Build all modules'
9cc5d74c 1195 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
88ecf814
DW
1196 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1197 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1da177e4 1198 @echo ' dir/ - Build all files in dir and below'
62718979
JP
1199 @echo ' dir/file.[oisS] - Build specified target only'
1200 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1201 @echo ' (requires a recent binutils and recent build (System.map))'
155ad605 1202 @echo ' dir/file.ko - Build module including final link'
c4d5ee67 1203 @echo ' modules_prepare - Set up for building external modules'
1da177e4
LT
1204 @echo ' tags/TAGS - Generate tags file for editors'
1205 @echo ' cscope - Generate cscope index'
f4ed1009 1206 @echo ' gtags - Generate GNU GLOBAL index'
6d128842 1207 @echo ' kernelrelease - Output the release version string'
cb58455c 1208 @echo ' kernelversion - Output the version stored in Makefile'
c398ff00 1209 @echo ' image_name - Output the image name'
2fb9b1bd 1210 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
59df3230 1211 echo ' (default: $(INSTALL_HDR_PATH))'; \
2fb9b1bd 1212 echo ''
1da177e4 1213 @echo 'Static analysers'
1da177e4
LT
1214 @echo ' checkstack - Generate a list of stack hogs'
1215 @echo ' namespacecheck - Name space analysis on compiled kernel'
aa025e7d 1216 @echo ' versioncheck - Sanity check on version.h usage'
ec2d987f 1217 @echo ' includecheck - Check for duplicate included header files'
295ac051 1218 @echo ' export_report - List the usages of all exported symbols'
179efcb4 1219 @echo ' headers_check - Sanity check on exported headers'
74425eee
NP
1220 @echo ' headerdep - Detect inclusion cycles in headers'
1221 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1222 @echo ''
1da177e4 1223 @echo 'Kernel packaging:'
6c2133e1 1224 @$(MAKE) $(build)=$(package-dir) help
1da177e4
LT
1225 @echo ''
1226 @echo 'Documentation targets:'
1227 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1228 @echo ''
01dee188 1229 @echo 'Architecture specific targets ($(SRCARCH)):'
1da177e4 1230 @$(if $(archhelp),$(archhelp),\
01dee188 1231 echo ' No architecture specific help defined for $(SRCARCH)')
1da177e4
LT
1232 @echo ''
1233 @$(if $(boards), \
1234 $(foreach b, $(boards), \
1235 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1236 echo '')
5dffbe81
SB
1237 @$(if $(board-dirs), \
1238 $(foreach b, $(board-dirs), \
1239 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1240 printf " %-16s - Show all of the above\\n" help-boards; \
1241 echo '')
1da177e4
LT
1242
1243 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
45d506bd 1244 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1da177e4 1245 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
701842e3
DK
1246 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1247 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
af07ce3e 1248 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
28bc20dc
SR
1249 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1250 @echo ' 1: warnings which may be relevant and do not occur too often'
1251 @echo ' 2: warnings which occur quite often but may still be relevant'
1252 @echo ' 3: more obscure warnings, can most likely be ignored'
a6de553d 1253 @echo ' Multiple levels can be combined with W=12 or W=123'
1da177e4
LT
1254 @echo ''
1255 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1256 @echo 'For further info see the ./README file'
1257
1258
5dffbe81
SB
1259help-board-dirs := $(addprefix help-,$(board-dirs))
1260
1261help-boards: $(help-board-dirs)
1262
1263boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1264
1265$(help-board-dirs): help-%:
1266 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1267 @$(if $(boards-per-dir), \
1268 $(foreach b, $(boards-per-dir), \
1269 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1270 echo '')
1271
1272
1da177e4
LT
1273# Documentation targets
1274# ---------------------------------------------------------------------------
1275%docs: scripts_basic FORCE
bffd2020 1276 $(Q)$(MAKE) $(build)=scripts build_docproc
1da177e4
LT
1277 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1278
1279else # KBUILD_EXTMOD
1280
1281###
1282# External module support.
1283# When building external modules the kernel used as basis is considered
1284# read-only, and no consistency checks are made and the make
1285# system is not used on the basis kernel. If updates are required
1286# in the basis kernel ordinary make commands (without M=...) must
1287# be used.
1288#
1289# The following are the only valid targets when building external
1290# modules.
1291# make M=dir clean Delete all automatically generated files
1292# make M=dir modules Make all modules in specified dir
1293# make M=dir Same as 'make M=dir modules'
1294# make M=dir modules_install
070b98bf 1295# Install the modules built in the module directory
1da177e4
LT
1296# Assumes install directory is already created
1297
1298# We are always building modules
1299KBUILD_MODULES := 1
4f193362 1300PHONY += crmodverdir
1da177e4 1301crmodverdir:
7bb9d092 1302 $(cmd_crmodverdir)
1da177e4 1303
4f193362 1304PHONY += $(objtree)/Module.symvers
1da177e4
LT
1305$(objtree)/Module.symvers:
1306 @test -e $(objtree)/Module.symvers || ( \
1307 echo; \
1308 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1309 echo " is missing; modules will have no dependencies and modversions."; \
1310 echo )
1311
1312module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
4f193362 1313PHONY += $(module-dirs) modules
1da177e4
LT
1314$(module-dirs): crmodverdir $(objtree)/Module.symvers
1315 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1316
1317modules: $(module-dirs)
fd54f502 1318 @$(kecho) ' Building modules, stage 2.';
b805aa0e 1319 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1da177e4 1320
4f193362 1321PHONY += modules_install
a67dc21a 1322modules_install: _emodinst_ _emodinst_post
e6304663 1323
4f193362
PS
1324install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1325PHONY += _emodinst_
a67dc21a 1326_emodinst_:
a67dc21a 1327 $(Q)mkdir -p $(MODLIB)/$(install-dir)
b805aa0e 1328 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4 1329
4f193362 1330PHONY += _emodinst_post
a67dc21a
SR
1331_emodinst_post: _emodinst_
1332 $(call cmd,depmod)
1333
1da177e4
LT
1334clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1335
4f193362 1336PHONY += $(clean-dirs) clean
1da177e4
LT
1337$(clean-dirs):
1338 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1339
1340clean: rm-dirs := $(MODVERDIR)
88d7be03 1341clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1da177e4
LT
1342
1343help:
1344 @echo ' Building external modules.'
1345 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1346 @echo ''
1347 @echo ' modules - default target, build the module(s)'
1348 @echo ' modules_install - install the module'
1349 @echo ' clean - remove generated files in module directory only'
1350 @echo ''
06300b21
SR
1351
1352# Dummies...
4f193362 1353PHONY += prepare scripts
06300b21
SR
1354prepare: ;
1355scripts: ;
1da177e4
LT
1356endif # KBUILD_EXTMOD
1357
88d7be03
MM
1358clean: $(clean-dirs)
1359 $(call cmd,rmdirs)
1360 $(call cmd,rmfiles)
43f67c98 1361 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
88d7be03 1362 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
addbcdbb 1363 -o -name '*.ko.*' \
88d7be03
MM
1364 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1365 -o -name '*.symtypes' -o -name 'modules.order' \
1366 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1367 -o -name '*.gcno' \) -type f -print | xargs rm -f
1368
1da177e4
LT
1369# Generate tags for editors
1370# ---------------------------------------------------------------------------
a680eedc
SR
1371quiet_cmd_tags = GEN $@
1372 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1da177e4 1373
f4ed1009 1374tags TAGS cscope gtags: FORCE
1da177e4
LT
1375 $(call cmd,tags)
1376
1da177e4
LT
1377# Scripts to check various things for consistency
1378# ---------------------------------------------------------------------------
1379
279f3dd3
PF
1380PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1381
1da177e4 1382includecheck:
436f876c 1383 find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4 1384 -name '*.[hcS]' -type f -print | sort \
80007434 1385 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1da177e4
LT
1386
1387versioncheck:
2ee2d292 1388 find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4 1389 -name '*.[hcS]' -type f -print | sort \
80007434 1390 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1da177e4 1391
74425eee
NP
1392coccicheck:
1393 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1394
1da177e4
LT
1395namespacecheck:
1396 $(PERL) $(srctree)/scripts/namespace.pl
1397
295ac051
AB
1398export_report:
1399 $(PERL) $(srctree)/scripts/export_report.pl
1400
1da177e4
LT
1401endif #ifeq ($(config-targets),1)
1402endif #ifeq ($(mixed-targets),1)
1403
c398ff00 1404PHONY += checkstack kernelrelease kernelversion image_name
e3ccf6e3 1405
011e3a9a
JD
1406# UML needs a little special treatment here. It wants to use the host
1407# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1408# else wants $(ARCH), including people doing cross-builds, which means
1409# that $(SUBARCH) doesn't work here.
1410ifeq ($(ARCH), um)
1411CHECKSTACK_ARCH := $(SUBARCH)
1412else
1413CHECKSTACK_ARCH := $(ARCH)
1414endif
1da177e4
LT
1415checkstack:
1416 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
011e3a9a 1417 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1da177e4 1418
7b8ea53d
AW
1419kernelrelease:
1420 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
01ab1788 1421
cb58455c 1422kernelversion:
2244cbd8 1423 @echo $(KERNELVERSION)
1da177e4 1424
c398ff00
MM
1425image_name:
1426 @echo $(KBUILD_IMAGE)
1427
ea01fa9f
BP
1428# Clear a bunch of variables before executing the submake
1429tools/: FORCE
bf35182f 1430 $(Q)mkdir -p $(objtree)/tools
a50e4333 1431 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/
ea01fa9f
BP
1432
1433tools/%: FORCE
bf35182f 1434 $(Q)mkdir -p $(objtree)/tools
a50e4333 1435 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*
ea01fa9f 1436
06300b21
SR
1437# Single targets
1438# ---------------------------------------------------------------------------
bc2546a6 1439# Single targets are compatible with:
e1b8513d 1440# - build with mixed source and output
bc2546a6
SR
1441# - build with separate output dir 'make O=...'
1442# - external modules
1443#
1444# target-dir => where to store outputfile
1445# build-dir => directory in kernel source tree to use
1446
1447ifeq ($(KBUILD_EXTMOD),)
aa360879 1448 build-dir = $(patsubst %/,%,$(dir $@))
bc2546a6
SR
1449 target-dir = $(dir $@)
1450else
1451 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1452 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1453 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1454endif
1455
f6ecebd6 1456%.s: %.c prepare scripts FORCE
bc2546a6 1457 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1458%.i: %.c prepare scripts FORCE
bc2546a6 1459 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1460%.o: %.c prepare scripts FORCE
bc2546a6 1461 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1462%.lst: %.c prepare scripts FORCE
bc2546a6 1463 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1464%.s: %.S prepare scripts FORCE
bc2546a6 1465 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1466%.o: %.S prepare scripts FORCE
bc2546a6 1467 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
15fde675
AG
1468%.symtypes: %.c prepare scripts FORCE
1469 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
06300b21 1470
bc2546a6 1471# Modules
31110ebb
SR
1472/: prepare scripts FORCE
1473 $(cmd_crmodverdir)
1474 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1475 $(build)=$(build-dir)
1476%/: prepare scripts FORCE
7bb9d092 1477 $(cmd_crmodverdir)
06300b21 1478 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
bc2546a6
SR
1479 $(build)=$(build-dir)
1480%.ko: prepare scripts FORCE
7bb9d092 1481 $(cmd_crmodverdir)
06300b21 1482 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
bc2546a6 1483 $(build)=$(build-dir) $(@:.ko=.o)
b805aa0e 1484 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
06300b21 1485
38385f8f 1486# FIXME Should go into a make.lib or something
1da177e4
LT
1487# ===========================================================================
1488
1489quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1490 cmd_rmdirs = rm -rf $(rm-dirs)
1491
1492quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1493 cmd_rmfiles = rm -f $(rm-files)
1494