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55922c9d 1VERSION = 3
c9eaa447 2PATCHLEVEL = 15
55922c9d 3SUBLEVEL = 0
a798c10f 4EXTRAVERSION = -rc2
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 := $(O)
1da177e4
LT
106endif
107
4a5838ad 108ifeq ("$(origin W)", "command line")
28bc20dc 109 export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
4a5838ad
BP
110endif
111
1da177e4 112# That's our default target when none is given on the command line
4f193362 113PHONY := _all
1da177e4
LT
114_all:
115
1cacc9ab
SR
116# Cancel implicit rules on top Makefile
117$(CURDIR)/Makefile Makefile: ;
118
1da177e4
LT
119ifneq ($(KBUILD_OUTPUT),)
120# Invoke a second make in the output directory, passing relevant variables
121# check that the output directory actually exists
122saved-output := $(KBUILD_OUTPUT)
1c9e70a5
MY
123KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
124 && /bin/pwd)
1da177e4 125$(if $(KBUILD_OUTPUT),, \
1c9e70a5 126 $(error failed to create output directory "$(saved-output)"))
1da177e4 127
0b35786d
MM
128PHONY += $(MAKECMDGOALS) sub-make
129
1cacc9ab 130$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
16f89098 131 @:
0b35786d
MM
132
133sub-make: FORCE
23a45e2c
SR
134 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
135 KBUILD_SRC=$(CURDIR) \
0b35786d
MM
136 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
137 $(filter-out _all sub-make,$(MAKECMDGOALS))
1da177e4
LT
138
139# Leave processing to above invocation of make
140skip-makefile := 1
141endif # ifneq ($(KBUILD_OUTPUT),)
142endif # ifeq ($(KBUILD_SRC),)
143
144# We process the rest of the Makefile if this is the final invocation of make
145ifeq ($(skip-makefile),)
146
147# If building an external module we do not care about the all: rule
148# but instead _all depend on modules
4f193362 149PHONY += all
1da177e4
LT
150ifeq ($(KBUILD_EXTMOD),)
151_all: all
152else
153_all: modules
154endif
155
156srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
1da177e4
LT
157objtree := $(CURDIR)
158src := $(srctree)
159obj := $(objtree)
160
0f558c33 161VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
1da177e4 162
11294235 163export srctree objtree VPATH
1da177e4 164
1da177e4
LT
165
166# SUBARCH tells the usermode build what the underlying arch is. That is set
167# first, and if a usermode build is happening, the "ARCH=um" on the command
168# line overrides the setting of ARCH below. If a native build is happening,
169# then ARCH is assigned, getting whatever value it gets normally, and
170# SUBARCH is subsequently ignored.
171
ffee0de4
DW
172SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
173 -e s/sun4u/sparc64/ \
1da177e4 174 -e s/arm.*/arm/ -e s/sa110/arm/ \
39990b5e 175 -e s/s390x/s390/ -e s/parisc64/parisc/ \
236b1957 176 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
f1b99392 177 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
1da177e4
LT
178
179# Cross compiling and selecting different set of gcc/bin-utils
180# ---------------------------------------------------------------------------
181#
182# When performing cross compilation for other architectures ARCH shall be set
183# to the target architecture. (See arch/* for the possibilities).
184# ARCH can be set during invocation of make:
185# make ARCH=ia64
186# Another way is to have ARCH set in the environment.
187# The default ARCH is the host where make is executed.
188
189# CROSS_COMPILE specify the prefix used for all executables used
190# during compilation. Only gcc and related bin-utils executables
191# are prefixed with $(CROSS_COMPILE).
192# CROSS_COMPILE can be set on the command line
193# make CROSS_COMPILE=ia64-linux-
194# Alternatively CROSS_COMPILE can be set in the environment.
84336466
RM
195# A third alternative is to store a setting in .config so that plain
196# "make" in the configured kernel build directory always uses that.
1da177e4
LT
197# Default value for CROSS_COMPILE is not to prefix executables
198# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
2331d1a6 199ARCH ?= $(SUBARCH)
84336466 200CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
1da177e4
LT
201
202# Architecture as present in compile.h
6752ed90
TG
203UTS_MACHINE := $(ARCH)
204SRCARCH := $(ARCH)
1da177e4 205
d746d647
SR
206# Additional ARCH settings for x86
207ifeq ($(ARCH),i386)
208 SRCARCH := x86
209endif
210ifeq ($(ARCH),x86_64)
211 SRCARCH := x86
212endif
74b469f2 213
5e538790 214# Additional ARCH settings for sparc
e69f58c0
NK
215ifeq ($(ARCH),sparc32)
216 SRCARCH := sparc
217endif
a439fe51 218ifeq ($(ARCH),sparc64)
5e538790 219 SRCARCH := sparc
a439fe51 220endif
2fb9b1bd 221
3cc000b5
PM
222# Additional ARCH settings for sh
223ifeq ($(ARCH),sh64)
224 SRCARCH := sh
225endif
226
18aecc2b 227# Additional ARCH settings for tile
6738d321
CM
228ifeq ($(ARCH),tilepro)
229 SRCARCH := tile
230endif
18aecc2b
CM
231ifeq ($(ARCH),tilegx)
232 SRCARCH := tile
233endif
234
5e538790
SR
235# Where to locate arch specific headers
236hdr-arch := $(SRCARCH)
237
14cdd3c4 238KCONFIG_CONFIG ?= .config
41263fc6 239export KCONFIG_CONFIG
14cdd3c4 240
1da177e4
LT
241# SHELL used by kbuild
242CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
243 else if [ -x /bin/bash ]; then echo /bin/bash; \
244 else echo sh; fi ; fi)
245
070b98bf
SR
246HOSTCC = gcc
247HOSTCXX = g++
25583d4b 248HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
070b98bf 249HOSTCXXFLAGS = -O2
1da177e4 250
61163efa
BW
251ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
252HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
253 -Wno-missing-field-initializers -fno-delete-null-pointer-checks
254endif
255
070b98bf
SR
256# Decide whether to build built-in, modular, or both.
257# Normally, just do built-in.
1da177e4
LT
258
259KBUILD_MODULES :=
260KBUILD_BUILTIN := 1
261
262# If we have only "make modules", don't compile built-in objects.
263# When we're building modules with modversions, we need to consider
264# the built-in objects during the descend as well, in order to
070b98bf 265# make sure the checksums are up to date before we record them.
1da177e4
LT
266
267ifeq ($(MAKECMDGOALS),modules)
268 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
269endif
270
271# If we have "make <whatever> modules", compile modules
272# in addition to whatever we do anyway.
273# Just "make" or "make all" shall build modules as well
274
275ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
276 KBUILD_MODULES := 1
277endif
278
279ifeq ($(MAKECMDGOALS),)
280 KBUILD_MODULES := 1
281endif
282
e579d351 283export KBUILD_MODULES KBUILD_BUILTIN
1da177e4
LT
284export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
285
286# Beautify output
287# ---------------------------------------------------------------------------
288#
289# Normally, we echo the whole command before executing it. By making
290# that echo $($(quiet)$(cmd)), we now have the possibility to set
291# $(quiet) to choose other forms of output instead, e.g.
292#
293# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
294# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
295#
296# If $(quiet) is empty, the whole command will be printed.
297# If it is set to "quiet_", only the short version will be printed.
070b98bf 298# If it is set to "silent_", nothing will be printed at all, since
1da177e4
LT
299# the variable $(silent_cmd_cc_o_c) doesn't exist.
300#
a58a414f 301# A simple variant is to prefix commands with $(Q) - that's useful
1da177e4
LT
302# for commands that shall be hidden in non-verbose mode.
303#
304# $(Q)ln $@ :<
305#
306# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
307# If KBUILD_VERBOSE equals 1 then the above command is displayed.
308
309ifeq ($(KBUILD_VERBOSE),1)
310 quiet =
311 Q =
312else
313 quiet=quiet_
314 Q = @
315endif
316
317# If the user is running make -s (silent mode), suppress echoing of
318# commands
319
e36aaea2
EM
320ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
321ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
322 quiet=silent_
323endif
324else # make-3.8x
e6ac89fa 325ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
1da177e4
LT
326 quiet=silent_
327endif
e36aaea2 328endif
1da177e4
LT
329
330export quiet Q KBUILD_VERBOSE
331
61163efa
BW
332ifneq ($(CC),)
333ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
334COMPILER := clang
335else
336COMPILER := gcc
337endif
338export COMPILER
339endif
1da177e4
LT
340
341# Look for make include files relative to root of kernel src
342MAKEFLAGS += --include-dir=$(srctree)
343
1cacc9ab
SR
344# We need some generic definitions (do not try to remake the file).
345$(srctree)/scripts/Kbuild.include: ;
15964864 346include $(srctree)/scripts/Kbuild.include
1da177e4
LT
347
348# Make variables (CC, etc...)
349
350AS = $(CROSS_COMPILE)as
351LD = $(CROSS_COMPILE)ld
352CC = $(CROSS_COMPILE)gcc
353CPP = $(CC) -E
354AR = $(CROSS_COMPILE)ar
355NM = $(CROSS_COMPILE)nm
356STRIP = $(CROSS_COMPILE)strip
357OBJCOPY = $(CROSS_COMPILE)objcopy
358OBJDUMP = $(CROSS_COMPILE)objdump
359AWK = awk
360GENKSYMS = scripts/genksyms/genksyms
caa27b66 361INSTALLKERNEL := installkernel
1da177e4 362DEPMOD = /sbin/depmod
1da177e4
LT
363PERL = perl
364CHECK = sparse
365
80a7d1d9
HE
366CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
367 -Wbitwise -Wno-return-void $(CF)
6588169d
SR
368CFLAGS_MODULE =
369AFLAGS_MODULE =
370LDFLAGS_MODULE =
1da177e4
LT
371CFLAGS_KERNEL =
372AFLAGS_KERNEL =
2521f2c2 373CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
1da177e4
LT
374
375
abbf1590
DH
376# Use USERINCLUDE when you must reference the UAPI directories only.
377USERINCLUDE := \
378 -I$(srctree)/arch/$(hdr-arch)/include/uapi \
379 -Iarch/$(hdr-arch)/include/generated/uapi \
380 -I$(srctree)/include/uapi \
381 -Iinclude/generated/uapi \
382 -include $(srctree)/include/linux/kconfig.h
383
1da177e4
LT
384# Use LINUXINCLUDE when you must reference the include/ directory.
385# Needed to be compatible with the O= option
abbf1590
DH
386LINUXINCLUDE := \
387 -I$(srctree)/arch/$(hdr-arch)/include \
388 -Iarch/$(hdr-arch)/include/generated \
389 $(if $(KBUILD_SRC), -I$(srctree)/include) \
390 -Iinclude \
391 $(USERINCLUDE)
1da177e4 392
d8672b40 393KBUILD_CPPFLAGS := -D__KERNEL__
1da177e4 394
a0f97e06 395KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
94bed2a9 396 -fno-strict-aliasing -fno-common \
a8735821 397 -Werror-implicit-function-declaration \
a3ca86ae 398 -Wno-format-security \
61163efa 399 $(call cc-option,-fno-delete-null-pointer-checks,)
80c00ba9
SR
400KBUILD_AFLAGS_KERNEL :=
401KBUILD_CFLAGS_KERNEL :=
222d394d 402KBUILD_AFLAGS := -D__ASSEMBLY__
6588169d
SR
403KBUILD_AFLAGS_MODULE := -DMODULE
404KBUILD_CFLAGS_MODULE := -DMODULE
405KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
1da177e4 406
f1d28fb0
RZ
407# Read KERNELRELEASE from include/config/kernel.release (if it exists)
408KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
cacd54ef 409KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
cb58455c 410
070b98bf 411export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
80ef88d6 412export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
caa27b66
SR
413export CPP AR NM STRIP OBJCOPY OBJDUMP
414export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
070b98bf 415export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
1da177e4 416
06c5040c 417export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
2521f2c2 418export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
222d394d 419export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
6588169d 420export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
80c00ba9 421export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
40df759e 422export KBUILD_ARFLAGS
1da177e4
LT
423
424# When compiling out-of-tree modules, put MODVERDIR in the module
425# tree rather than in the kernel tree. The kernel tree might
426# even be read-only.
427export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
428
1da177e4
LT
429# Files to ignore in find ... statements
430
ae63b2d7
PB
431export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
432 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
433 -prune -o
450c6076
JJ
434export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
435 --exclude CVS --exclude .pc --exclude .hg --exclude .git
1da177e4
LT
436
437# ===========================================================================
438# Rules shared between *config targets and build targets
439
440# Basic helpers built in scripts/
4f193362 441PHONY += scripts_basic
1da177e4
LT
442scripts_basic:
443 $(Q)$(MAKE) $(build)=scripts/basic
638adb05 444 $(Q)rm -f .tmp_quiet_recordmcount
1da177e4 445
cd05e6bd
JB
446# To avoid any implicit rule to kick in, define an empty command.
447scripts/basic/%: scripts_basic ;
448
4f193362 449PHONY += outputmakefile
fd5f0cd6
JB
450# outputmakefile generates a Makefile in the output directory, if using a
451# separate output directory. This allows convenient use of make in the
452# output directory.
1da177e4 453outputmakefile:
fd5f0cd6 454ifneq ($(KBUILD_SRC),)
92979997 455 $(Q)ln -fsn $(srctree) source
fd5f0cd6
JB
456 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
457 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
458endif
1da177e4 459
d8ecc5cd
SR
460# Support for using generic headers in asm-generic
461PHONY += asm-generic
462asm-generic:
463 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
3c5994c8
CM
464 src=asm obj=arch/$(SRCARCH)/include/generated/asm
465 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
466 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
d8ecc5cd 467
1da177e4
LT
468# To make sure we do not include .config for any of the *config targets
469# catch them early, and hand them over to scripts/kconfig/Makefile
470# It is allowed to specify more targets when calling make, including
471# mixing *config targets and build targets.
070b98bf 472# For example 'make oldconfig all'.
1da177e4
LT
473# Detect when mixed targets is specified, and make a second invocation
474# of make so .config is not included in this case either (for *config).
475
10b63956 476version_h := include/generated/uapi/linux/version.h
d183e6f5 477
3eb3c740 478no-dot-config-targets := clean mrproper distclean \
f4ed1009 479 cscope gtags TAGS tags help %docs check% coccicheck \
d183e6f5 480 $(version_h) headers_% archheaders archscripts \
4aed2fd8 481 kernelversion %src-pkg
1da177e4
LT
482
483config-targets := 0
484mixed-targets := 0
485dot-config := 1
486
487ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
488 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
489 dot-config := 0
490 endif
491endif
492
493ifeq ($(KBUILD_EXTMOD),)
494 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
495 config-targets := 1
496 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
497 mixed-targets := 1
498 endif
499 endif
500endif
501
502ifeq ($(mixed-targets),1)
503# ===========================================================================
504# We're called with mixed targets (*config and build targets).
505# Handle them one by one.
506
507%:: FORCE
508 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
509
510else
511ifeq ($(config-targets),1)
512# ===========================================================================
513# *config targets only - make sure prerequisites are updated, and descend
514# in scripts/kconfig to make the *config target
515
516# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
517# KBUILD_DEFCONFIG may point out an alternative default configuration
518# used for 'make defconfig'
74b469f2 519include $(srctree)/arch/$(SRCARCH)/Makefile
61bee204 520export KBUILD_DEFCONFIG KBUILD_KCONFIG
1da177e4 521
31110ebb
SR
522config: scripts_basic outputmakefile FORCE
523 $(Q)mkdir -p include/linux include/config
524 $(Q)$(MAKE) $(build)=scripts/kconfig $@
525
526%config: scripts_basic outputmakefile FORCE
c955ccaf 527 $(Q)mkdir -p include/linux include/config
1da177e4
LT
528 $(Q)$(MAKE) $(build)=scripts/kconfig $@
529
530else
531# ===========================================================================
532# Build targets only - this includes vmlinux, arch specific targets, clean
533# targets and others. In general all targets except *config targets.
534
535ifeq ($(KBUILD_EXTMOD),)
536# Additional helpers built in scripts/
537# Carefully list dependencies so we do not try to build scripts twice
070b98bf 538# in parallel
4f193362 539PHONY += scripts
a54292f5
AS
540scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
541 asm-generic
1da177e4
LT
542 $(Q)$(MAKE) $(build)=$(@)
543
1da177e4
LT
544# Objects we will link into vmlinux / subdirs we need to visit
545init-y := init/
4d2acfbf 546drivers-y := drivers/ sound/ firmware/
1da177e4
LT
547net-y := net/
548libs-y := lib/
549core-y := usr/
550endif # KBUILD_EXTMOD
551
552ifeq ($(dot-config),1)
9ee4e336
SR
553# Read in config
554-include include/config/auto.conf
1da177e4 555
9ee4e336 556ifeq ($(KBUILD_EXTMOD),)
1da177e4
LT
557# Read in dependencies to all Kconfig* files, make sure to run
558# oldconfig if changes are detected.
c955ccaf 559-include include/config/auto.conf.cmd
1da177e4 560
1da177e4 561# To avoid any implicit rule to kick in, define an empty command
14cdd3c4 562$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
1da177e4 563
c955ccaf 564# If .config is newer than include/config/auto.conf, someone tinkered
752625cf 565# with it and forgot to run make oldconfig.
070b98bf 566# if auto.conf.cmd is missing then we are probably in a cleaned tree so
752625cf 567# we execute the config step to be sure to catch updated Kconfig files
bc081dd6 568include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
1da177e4 569 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
3041e47e 570else
264a2683 571# external modules needs include/generated/autoconf.h and include/config/auto.conf
9ee4e336
SR
572# but do not care if they are up-to-date. Use auto.conf to trigger the test
573PHONY += include/config/auto.conf
574
575include/config/auto.conf:
264a2683 576 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
5369f550
MM
577 echo >&2; \
578 echo >&2 " ERROR: Kernel configuration is invalid."; \
579 echo >&2 " include/generated/autoconf.h or $@ are missing.";\
580 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
581 echo >&2 ; \
9ee4e336
SR
582 /bin/false)
583
584endif # KBUILD_EXTMOD
c955ccaf 585
1da177e4
LT
586else
587# Dummy target needed, because used as prerequisite
c955ccaf 588include/config/auto.conf: ;
9ee4e336 589endif # $(dot-config)
1da177e4
LT
590
591# The all: target is the default when no target is given on the
592# command line.
593# This allow a user to issue only 'make' to build a kernel including modules
c8447161 594# Defaults to vmlinux, but the arch makefile usually adds further targets
1da177e4
LT
595all: vmlinux
596
597ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
e74fc973 598KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
1da177e4 599else
a0f97e06 600KBUILD_CFLAGS += -O2
1da177e4
LT
601endif
602
a1f42beb
PM
603include $(srctree)/arch/$(SRCARCH)/Makefile
604
1873e870
AK
605ifdef CONFIG_READABLE_ASM
606# Disable optimizations that make assembler listings hard to read.
607# reorder blocks reorders the control in the function
608# ipa clone creates specialized cloned functions
609# partial inlining inlines only parts of functions
610KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
611 $(call cc-option,-fno-ipa-cp-clone,) \
612 $(call cc-option,-fno-partial-inlining)
613endif
614
08f67461 615ifneq ($(CONFIG_FRAME_WARN),0)
35bb5b1e
AK
616KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
617endif
618
19952a92 619# Handle stack protector mode.
8779657d 620ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
19952a92
KC
621 stackp-flag := -fstack-protector
622 ifeq ($(call cc-option, $(stackp-flag)),)
6c15b327 623 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
27b2a49a 624 -fstack-protector not supported by compiler)
19952a92 625 endif
6c15b327
JB
626else
627ifdef CONFIG_CC_STACKPROTECTOR_STRONG
8779657d
KC
628 stackp-flag := -fstack-protector-strong
629 ifeq ($(call cc-option, $(stackp-flag)),)
630 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
631 -fstack-protector-strong not supported by compiler)
632 endif
19952a92
KC
633else
634 # Force off for distro compilers that enable stack protector by default.
635 stackp-flag := $(call cc-option, -fno-stack-protector)
5d707e9c 636endif
6c15b327 637endif
19952a92 638KBUILD_CFLAGS += $(stackp-flag)
e06b8b98 639
61163efa
BW
640ifeq ($(COMPILER),clang)
641KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
642KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
643KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
644KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
645KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
646# Quiet clang warning: comparison of unsigned expression < 0 is always false
647KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
648# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
649# source of a reference will be _MergedGlobals and not on of the whitelisted names.
650# See modpost pattern 2
651KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
652else
653
af0e5d56
DJ
654# This warning generated too much noise in a regular build.
655# Use make W=1 to enable this warning (see scripts/Makefile.build)
8417da6f 656KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
61163efa 657endif
af0e5d56 658
1da177e4 659ifdef CONFIG_FRAME_POINTER
a0f97e06 660KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
1da177e4 661else
7e9501fd
RV
662# Some targets (ARM with Thumb2, for example), can't be built with frame
663# pointers. For those, we don't have FUNCTION_TRACER automatically
664# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
665# incompatible with -fomit-frame-pointer with current GCC, so we don't use
666# -fomit-frame-pointer with FUNCTION_TRACER.
667ifndef CONFIG_FUNCTION_TRACER
a0f97e06 668KBUILD_CFLAGS += -fomit-frame-pointer
1da177e4 669endif
7e9501fd 670endif
1da177e4
LT
671
672ifdef CONFIG_DEBUG_INFO
a0f97e06 673KBUILD_CFLAGS += -g
7db43632 674KBUILD_AFLAGS += -Wa,--gdwarf-2
1da177e4
LT
675endif
676
d6f4ceb7 677ifdef CONFIG_DEBUG_INFO_REDUCED
e82c4bb8
AK
678KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
679 $(call cc-option,-fno-var-tracking)
d6f4ceb7
AK
680endif
681
606576ce 682ifdef CONFIG_FUNCTION_TRACER
a2546fae
SR
683ifdef CONFIG_HAVE_FENTRY
684CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
685endif
686KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
687KBUILD_AFLAGS += $(CC_USING_FENTRY)
72441cb1 688ifdef CONFIG_DYNAMIC_FTRACE
cf4db259 689 ifdef CONFIG_HAVE_C_RECORDMCOUNT
72441cb1
SR
690 BUILD_C_RECORDMCOUNT := y
691 export BUILD_C_RECORDMCOUNT
692 endif
693endif
16444a8a
ACM
694endif
695
91341d4b
SR
696# We trigger additional mismatches with less inlining
697ifdef CONFIG_DEBUG_SECTION_MISMATCH
698KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
699endif
700
e8e69931 701# arch Makefile may override CC so keep this after arch Makefile is included
e8f5bdb0 702NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
e8e69931
SR
703CHECKFLAGS += $(NOSTDINC_FLAGS)
704
1da177e4 705# warn about C99 declaration after statement
a0f97e06 706KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
1da177e4 707
070b98bf 708# disable pointer signed / unsigned warnings in gcc 4.0
8417da6f 709KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
1da177e4 710
fe8d0a41 711# disable invalid "can't wrap" optimizations for signed / pointers
a137802e 712KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
d0115552 713
8f7f5c9f
AK
714# conserve stack if available
715KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
716
80970472
ST
717# disallow errors like 'EXPORT_GPL(foo);' with missing header
718KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
719
720# require functions to have arguments in prototypes, not empty 'int foo()'
721KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
722
fe7c36c7
JT
723# Prohibit date/time macros, which would make the build non-deterministic
724KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
725
40df759e
MM
726# use the deterministic mode of AR if available
727KBUILD_ARFLAGS := $(call ar-option,D)
728
bf5438fc
JB
729# check for 'asm goto'
730ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
731 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
732endif
733
06c5040c 734# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
70cfe026
735KBUILD_CPPFLAGS += $(KCPPFLAGS)
736KBUILD_AFLAGS += $(KAFLAGS)
737KBUILD_CFLAGS += $(KCFLAGS)
52bcc330 738
18991197
RM
739# Use --build-id when available.
740LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
f86fd306 741 $(call cc-ldoption, -Wl$(comma)--build-id,))
6588169d 742KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
18991197
RM
743LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
744
5d7d18f5 745ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
d79a2719 746LDFLAGS_vmlinux += $(call ld-option, -X,)
5d7d18f5
DH
747endif
748
1da177e4 749# Default kernel image to build when no specific target is given.
070b98bf 750# KBUILD_IMAGE may be overruled on the command line or
1da177e4
LT
751# set in the environment
752# Also any assignments in arch/$(ARCH)/Makefile take precedence over
753# this default value
754export KBUILD_IMAGE ?= vmlinux
755
756#
757# INSTALL_PATH specifies where to place the updated kernel and system map
758# images. Default is /boot, but you can set it to other values
759export INSTALL_PATH ?= /boot
760
f4d4ffc0
JC
761#
762# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
763# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
764# an argument if needed. Otherwise it defaults to the kernel install path
765#
766export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
767
1da177e4
LT
768#
769# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
770# relocations required by build roots. This is not defined in the
070b98bf 771# makefile but the argument can be passed to make if needed.
1da177e4
LT
772#
773
df9df036 774MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
1da177e4
LT
775export MODLIB
776
ac031f26 777#
2ea03891
SR
778# INSTALL_MOD_STRIP, if defined, will cause modules to be
779# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
780# the default option --strip-debug will be used. Otherwise,
177b241d 781# INSTALL_MOD_STRIP value will be used as the options to the strip command.
2ea03891 782
ac031f26
TT
783ifdef INSTALL_MOD_STRIP
784ifeq ($(INSTALL_MOD_STRIP),1)
2ea03891 785mod_strip_cmd = $(STRIP) --strip-debug
ac031f26 786else
2ea03891 787mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
ac031f26
TT
788endif # INSTALL_MOD_STRIP=1
789else
2ea03891 790mod_strip_cmd = true
ac031f26
TT
791endif # INSTALL_MOD_STRIP
792export mod_strip_cmd
793
1bf49dd4 794# Select initial ramdisk compression format, default is gzip(1).
795# This shall be used by the dracut(8) tool while creating an initramfs image.
796#
7ac18156
JB
797INITRD_COMPRESS-y := gzip
798INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
799INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
800INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
801INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
802INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
b7000ade
LT
803# do not export INITRD_COMPRESS, since we didn't actually
804# choose a sane default compression above.
805# export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
1da177e4 806
d9d8d7ed 807ifdef CONFIG_MODULE_SIG_ALL
e2a666d5
RR
808MODSECKEY = ./signing_key.priv
809MODPUBKEY = ./signing_key.x509
810export MODPUBKEY
4bc9410c 811mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY)
e2a666d5
RR
812else
813mod_sign_cmd = true
814endif
815export mod_sign_cmd
816
817
1da177e4 818ifeq ($(KBUILD_EXTMOD),)
3a65dfe8 819core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
1da177e4
LT
820
821vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
822 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
823 $(net-y) $(net-m) $(libs-y) $(libs-m)))
824
825vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
826 $(init-n) $(init-) \
827 $(core-n) $(core-) $(drivers-n) $(drivers-) \
828 $(net-n) $(net-) $(libs-n) $(libs-))))
829
830init-y := $(patsubst %/, %/built-in.o, $(init-y))
831core-y := $(patsubst %/, %/built-in.o, $(core-y))
832drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
833net-y := $(patsubst %/, %/built-in.o, $(net-y))
834libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
835libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
836libs-y := $(libs-y1) $(libs-y2)
837
1f2bfbd0 838# Externally visible symbols (used by link-vmlinux.sh)
95698570
SR
839export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
840export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
841export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
1f2bfbd0 842export LDFLAGS_vmlinux
6615d6c3
MM
843# used by scripts/pacmage/Makefile
844export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt)
9bb48247 845
1f2bfbd0 846vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
1da177e4 847
1f2bfbd0
SR
848# Final link of vmlinux
849 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
850quiet_cmd_link-vmlinux = LINK $@
1da177e4 851
1f2bfbd0
SR
852# Include targets which we want to
853# execute if the rest of the kernel build went well.
854vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
0f836e5f 855ifdef CONFIG_HEADERS_CHECK
0e7af8d0 856 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
267c4025
MD
857endif
858ifdef CONFIG_SAMPLES
859 $(Q)$(MAKE) $(build)=samples
3794f3e8
RD
860endif
861ifdef CONFIG_BUILD_DOCSRC
862 $(Q)$(MAKE) $(build)=Documentation
0f836e5f 863endif
1f2bfbd0 864 +$(call if_changed,link-vmlinux)
741f98fe 865
1da177e4
LT
866# The actual objects are generated when descending,
867# make sure no implicit rule kicks in
1f2bfbd0 868$(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
1da177e4
LT
869
870# Handle descending into subdirectories listed in $(vmlinux-dirs)
871# Preset locale variables to speed up the build process. Limit locale
872# tweaks to this spot to avoid wrong language settings when running
873# make menuconfig etc.
874# Error messages still appears in the original language
875
4f193362 876PHONY += $(vmlinux-dirs)
5bb78269 877$(vmlinux-dirs): prepare scripts
1da177e4
LT
878 $(Q)$(MAKE) $(build)=$@
879
0d0e7718
MM
880define filechk_kernel.release
881 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
882endef
883
83a35e36 884# Store (new) KERNELRELEASE string in include/config/kernel.release
f1d28fb0 885include/config/kernel.release: include/config/auto.conf FORCE
0d0e7718 886 $(call filechk,kernel.release)
cb58455c
SR
887
888
1da177e4 889# Things we need to do before we recursively start building the kernel
5bb78269
SR
890# or the modules are listed in "prepare".
891# A multi level approach is used. prepareN is processed before prepareN-1.
892# archprepare is used in arch Makefiles and when processed asm symlink,
893# version.h and scripts_basic is processed / created.
1da177e4 894
5bb78269 895# Listed in dependency order
4f193362 896PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
5bb78269 897
86feeaa8 898# prepare3 is used to check if we are building in a separate output directory,
1da177e4
LT
899# and if so do:
900# 1) Check that make has not been executed in the kernel src $(srctree)
f1d28fb0 901prepare3: include/config/kernel.release
1da177e4 902ifneq ($(KBUILD_SRC),)
fd54f502 903 @$(kecho) ' Using $(srctree) as source for kernel'
c955ccaf 904 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
5369f550
MM
905 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
906 echo >&2 " in the '$(srctree)' directory.";\
1da177e4
LT
907 /bin/false; \
908 fi;
1da177e4
LT
909endif
910
86feeaa8 911# prepare2 creates a makefile if using a separate output directory
d8ecc5cd 912prepare2: prepare3 outputmakefile asm-generic
1da177e4 913
d183e6f5 914prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
f7f16b77 915 include/config/auto.conf
7bb9d092 916 $(cmd_crmodverdir)
1da177e4 917
6520fe55 918archprepare: archheaders archscripts prepare1 scripts_basic
5bb78269
SR
919
920prepare0: archprepare FORCE
8d36a623 921 $(Q)$(MAKE) $(build)=.
86feeaa8 922
1da177e4 923# All the preparing..
d395efb5 924prepare: prepare0
1da177e4 925
1da177e4
LT
926# Generate some files
927# ---------------------------------------------------------------------------
928
929# KERNELRELEASE can change from a few different places, meaning version.h
930# needs to be updated, so this check is forced on all builds
931
932uts_len := 64
63104eec
SR
933define filechk_utsrelease.h
934 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
935 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
936 exit 1; \
937 fi; \
938 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
939endef
1da177e4
LT
940
941define filechk_version.h
450c6076
JJ
942 (echo \#define LINUX_VERSION_CODE $(shell \
943 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
63104eec 944 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1da177e4
LT
945endef
946
d183e6f5 947$(version_h): $(srctree)/Makefile FORCE
1da177e4
LT
948 $(call filechk,version.h)
949
273b281f 950include/generated/utsrelease.h: include/config/kernel.release FORCE
63104eec
SR
951 $(call filechk,utsrelease.h)
952
179efcb4
VN
953PHONY += headerdep
954headerdep:
9663d989
PF
955 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
956 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
179efcb4 957
1da177e4
LT
958# ---------------------------------------------------------------------------
959
4f193362 960PHONY += depend dep
1da177e4
LT
961depend dep:
962 @echo '*** Warning: make $@ is unnecessary now.'
963
88ecf814
DW
964# ---------------------------------------------------------------------------
965# Firmware install
966INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
967export INSTALL_FW_PATH
968
969PHONY += firmware_install
970firmware_install: FORCE
971 @mkdir -p $(objtree)/firmware
972 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
973
8d730cfb
DW
974# ---------------------------------------------------------------------------
975# Kernel headers
8d730cfb 976
e6883b18
SR
977#Default location for installed headers
978export INSTALL_HDR_PATH = $(objtree)/usr
6d716275 979
e6883b18 980hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
2fb9b1bd
SR
981
982# If we do an all arch process set dst to asm-$(hdr-arch)
983hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
e6883b18 984
052ad274
PA
985PHONY += archheaders
986archheaders:
987
6520fe55
PA
988PHONY += archscripts
989archscripts:
990
e6883b18 991PHONY += __headers
d183e6f5 992__headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
e1b702cf 993 $(Q)$(MAKE) $(build)=scripts build_unifdef
e6883b18
SR
994
995PHONY += headers_install_all
2fb9b1bd
SR
996headers_install_all:
997 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
6d716275 998
8d730cfb 999PHONY += headers_install
e6883b18 1000headers_install: __headers
10b63956
DH
1001 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
1002 $(error Headers not exportable for the $(SRCARCH) architecture))
1003 $(Q)$(MAKE) $(hdr-inst)=include/uapi
1004 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
8d730cfb 1005
1f85712e
MF
1006PHONY += headers_check_all
1007headers_check_all: headers_install_all
2fb9b1bd 1008 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1f85712e 1009
68475359
DW
1010PHONY += headers_check
1011headers_check: headers_install
10b63956
DH
1012 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1013 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
68475359 1014
1da177e4
LT
1015# ---------------------------------------------------------------------------
1016# Modules
1017
1018ifdef CONFIG_MODULES
1019
070b98bf 1020# By default, build modules as well
1da177e4 1021
73d1393e 1022all: modules
1da177e4
LT
1023
1024# Build modules
551559e1
TH
1025#
1026# A module can be listed more than once in obj-m resulting in
1027# duplicate lines in modules.order files. Those are removed
1028# using awk while concatenating to the final file.
1da177e4 1029
4f193362 1030PHONY += modules
2da30e70 1031modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
551559e1 1032 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
fd54f502 1033 @$(kecho) ' Building modules, stage 2.';
b805aa0e 1034 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
44463f7d 1035 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1da177e4 1036
a6c36632
MM
1037modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1038 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1039
73d1393e 1040%/modules.builtin: include/config/auto.conf
a6c36632
MM
1041 $(Q)$(MAKE) $(modbuiltin)=$*
1042
1da177e4
LT
1043
1044# Target to prepare building external modules
4f193362 1045PHONY += modules_prepare
5bb78269 1046modules_prepare: prepare scripts
1da177e4
LT
1047
1048# Target to install modules
4f193362 1049PHONY += modules_install
1da177e4
LT
1050modules_install: _modinst_ _modinst_post
1051
4f193362 1052PHONY += _modinst_
2da30e70 1053_modinst_:
1da177e4
LT
1054 @rm -rf $(MODLIB)/kernel
1055 @rm -f $(MODLIB)/source
1056 @mkdir -p $(MODLIB)/kernel
1057 @ln -s $(srctree) $(MODLIB)/source
1058 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1059 rm -f $(MODLIB)/build ; \
1060 ln -s $(objtree) $(MODLIB)/build ; \
1061 fi
551559e1 1062 @cp -f $(objtree)/modules.order $(MODLIB)/
bc081dd6 1063 @cp -f $(objtree)/modules.builtin $(MODLIB)/
b805aa0e 1064 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4 1065
50a8ec31 1066# This depmod is only for convenience to give the initial
1da177e4
LT
1067# boot a modules.dep even before / is mounted read-write. However the
1068# boot script depmod is the master version.
4f193362 1069PHONY += _modinst_post
6d128e1e 1070_modinst_post: _modinst_
88ecf814 1071 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
50a8ec31 1072 $(call cmd,depmod)
1da177e4 1073
d890f510
JB
1074ifeq ($(CONFIG_MODULE_SIG), y)
1075PHONY += modules_sign
1076modules_sign:
1077 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1078endif
1079
1da177e4
LT
1080else # CONFIG_MODULES
1081
1082# Modules not configured
1083# ---------------------------------------------------------------------------
1084
1085modules modules_install: FORCE
5369f550
MM
1086 @echo >&2
1087 @echo >&2 "The present kernel configuration has modules disabled."
1088 @echo >&2 "Type 'make config' and enable loadable module support."
1089 @echo >&2 "Then build a kernel with module support enabled."
1090 @echo >&2
1da177e4
LT
1091 @exit 1
1092
1093endif # CONFIG_MODULES
1094
1da177e4
LT
1095###
1096# Cleaning is done on three levels.
1097# make clean Delete most generated files
1098# Leave enough to build external modules
1099# make mrproper Delete the current configuration, and all generated files
1100# make distclean Remove editor backup files, patch leftover files and the like
1101
1102# Directories & files removed with 'make clean'
1103CLEAN_DIRS += $(MODVERDIR)
1da177e4
LT
1104
1105# Directories & files removed with 'make mrproper'
d8ecc5cd 1106MRPROPER_DIRS += include/config usr/include include/generated \
79192ca8 1107 arch/*/include/generated .tmp_objdiff
d183e6f5 1108MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
d5b71936
RR
1109 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1110 signing_key.priv signing_key.x509 x509.genkey \
1111 extra_certificates signing_key.x509.keyid \
9c8cdb71 1112 signing_key.x509.signer include/linux/version.h
1da177e4
LT
1113
1114# clean - Delete most, but leave enough to build external modules
1115#
1116clean: rm-dirs := $(CLEAN_DIRS)
1117clean: rm-files := $(CLEAN_FILES)
fb68d4be 1118clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1da177e4 1119
bd1ee804 1120PHONY += $(clean-dirs) clean archclean vmlinuxclean
1da177e4
LT
1121$(clean-dirs):
1122 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1123
bd1ee804
PM
1124vmlinuxclean:
1125 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1126
1127clean: archclean vmlinuxclean
1da177e4
LT
1128
1129# mrproper - Delete all generated files, including .config
1130#
1131mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1132mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1133mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1134
4f193362 1135PHONY += $(mrproper-dirs) mrproper archmrproper
1da177e4
LT
1136$(mrproper-dirs):
1137 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1138
1139mrproper: clean archmrproper $(mrproper-dirs)
1140 $(call cmd,rmdirs)
1141 $(call cmd,rmfiles)
1142
1143# distclean
1144#
4f193362 1145PHONY += distclean
1da177e4
LT
1146
1147distclean: mrproper
1148 @find $(srctree) $(RCS_FIND_IGNORE) \
070b98bf 1149 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1da177e4 1150 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
a03fcb50 1151 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
1da177e4
LT
1152 -type f -print | xargs rm -f
1153
1154
1155# Packaging of the kernel to various formats
1156# ---------------------------------------------------------------------------
1157# rpm target kept for backward compatibility
1158package-dir := $(srctree)/scripts/package
1159
bafb6747
ACM
1160%src-pkg: FORCE
1161 $(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6d 1162%pkg: include/config/kernel.release FORCE
6c2133e1 1163 $(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6d 1164rpm: include/config/kernel.release FORCE
6c2133e1 1165 $(Q)$(MAKE) $(build)=$(package-dir) $@
1da177e4
LT
1166
1167
1168# Brief documentation of the typical targets used
1169# ---------------------------------------------------------------------------
1170
5dffbe81 1171boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1da177e4 1172boards := $(notdir $(boards))
5dffbe81
SB
1173board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1174board-dirs := $(sort $(notdir $(board-dirs:/=)))
1da177e4
LT
1175
1176help:
1177 @echo 'Cleaning targets:'
5ea084ef 1178 @echo ' clean - Remove most generated files but keep the config and'
5cc8d246 1179 @echo ' enough build support to build external modules'
5ea084ef 1180 @echo ' mrproper - Remove all generated files + config + various backup files'
5cc8d246 1181 @echo ' distclean - mrproper + remove editor backup and patch files'
1da177e4
LT
1182 @echo ''
1183 @echo 'Configuration targets:'
1184 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1185 @echo ''
1186 @echo 'Other generic targets:'
1187 @echo ' all - Build all targets marked with [*]'
1188 @echo '* vmlinux - Build the bare kernel'
1189 @echo '* modules - Build all modules'
9cc5d74c 1190 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
88ecf814
DW
1191 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1192 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1da177e4 1193 @echo ' dir/ - Build all files in dir and below'
62718979
JP
1194 @echo ' dir/file.[oisS] - Build specified target only'
1195 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1196 @echo ' (requires a recent binutils and recent build (System.map))'
155ad605 1197 @echo ' dir/file.ko - Build module including final link'
c4d5ee67 1198 @echo ' modules_prepare - Set up for building external modules'
1da177e4
LT
1199 @echo ' tags/TAGS - Generate tags file for editors'
1200 @echo ' cscope - Generate cscope index'
f4ed1009 1201 @echo ' gtags - Generate GNU GLOBAL index'
6d128842 1202 @echo ' kernelrelease - Output the release version string'
cb58455c 1203 @echo ' kernelversion - Output the version stored in Makefile'
c398ff00 1204 @echo ' image_name - Output the image name'
2fb9b1bd 1205 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
59df3230 1206 echo ' (default: $(INSTALL_HDR_PATH))'; \
2fb9b1bd 1207 echo ''
1da177e4 1208 @echo 'Static analysers'
1da177e4
LT
1209 @echo ' checkstack - Generate a list of stack hogs'
1210 @echo ' namespacecheck - Name space analysis on compiled kernel'
aa025e7d 1211 @echo ' versioncheck - Sanity check on version.h usage'
ec2d987f 1212 @echo ' includecheck - Check for duplicate included header files'
295ac051 1213 @echo ' export_report - List the usages of all exported symbols'
179efcb4 1214 @echo ' headers_check - Sanity check on exported headers'
74425eee
NP
1215 @echo ' headerdep - Detect inclusion cycles in headers'
1216 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1217 @echo ''
1da177e4 1218 @echo 'Kernel packaging:'
6c2133e1 1219 @$(MAKE) $(build)=$(package-dir) help
1da177e4
LT
1220 @echo ''
1221 @echo 'Documentation targets:'
1222 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1223 @echo ''
01dee188 1224 @echo 'Architecture specific targets ($(SRCARCH)):'
1da177e4 1225 @$(if $(archhelp),$(archhelp),\
01dee188 1226 echo ' No architecture specific help defined for $(SRCARCH)')
1da177e4
LT
1227 @echo ''
1228 @$(if $(boards), \
1229 $(foreach b, $(boards), \
1230 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1231 echo '')
5dffbe81
SB
1232 @$(if $(board-dirs), \
1233 $(foreach b, $(board-dirs), \
1234 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1235 printf " %-16s - Show all of the above\\n" help-boards; \
1236 echo '')
1da177e4
LT
1237
1238 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
45d506bd 1239 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1da177e4 1240 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
701842e3
DK
1241 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1242 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
af07ce3e 1243 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
28bc20dc
SR
1244 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1245 @echo ' 1: warnings which may be relevant and do not occur too often'
1246 @echo ' 2: warnings which occur quite often but may still be relevant'
1247 @echo ' 3: more obscure warnings, can most likely be ignored'
a6de553d 1248 @echo ' Multiple levels can be combined with W=12 or W=123'
1da177e4
LT
1249 @echo ''
1250 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1251 @echo 'For further info see the ./README file'
1252
1253
5dffbe81
SB
1254help-board-dirs := $(addprefix help-,$(board-dirs))
1255
1256help-boards: $(help-board-dirs)
1257
1258boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1259
1260$(help-board-dirs): help-%:
1261 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1262 @$(if $(boards-per-dir), \
1263 $(foreach b, $(boards-per-dir), \
1264 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1265 echo '')
1266
1267
1da177e4
LT
1268# Documentation targets
1269# ---------------------------------------------------------------------------
1270%docs: scripts_basic FORCE
bffd2020 1271 $(Q)$(MAKE) $(build)=scripts build_docproc
1da177e4
LT
1272 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1273
1274else # KBUILD_EXTMOD
1275
1276###
1277# External module support.
1278# When building external modules the kernel used as basis is considered
1279# read-only, and no consistency checks are made and the make
1280# system is not used on the basis kernel. If updates are required
1281# in the basis kernel ordinary make commands (without M=...) must
1282# be used.
1283#
1284# The following are the only valid targets when building external
1285# modules.
1286# make M=dir clean Delete all automatically generated files
1287# make M=dir modules Make all modules in specified dir
1288# make M=dir Same as 'make M=dir modules'
1289# make M=dir modules_install
070b98bf 1290# Install the modules built in the module directory
1da177e4
LT
1291# Assumes install directory is already created
1292
1293# We are always building modules
1294KBUILD_MODULES := 1
4f193362 1295PHONY += crmodverdir
1da177e4 1296crmodverdir:
7bb9d092 1297 $(cmd_crmodverdir)
1da177e4 1298
4f193362 1299PHONY += $(objtree)/Module.symvers
1da177e4
LT
1300$(objtree)/Module.symvers:
1301 @test -e $(objtree)/Module.symvers || ( \
1302 echo; \
1303 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1304 echo " is missing; modules will have no dependencies and modversions."; \
1305 echo )
1306
1307module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
4f193362 1308PHONY += $(module-dirs) modules
1da177e4
LT
1309$(module-dirs): crmodverdir $(objtree)/Module.symvers
1310 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1311
1312modules: $(module-dirs)
fd54f502 1313 @$(kecho) ' Building modules, stage 2.';
b805aa0e 1314 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1da177e4 1315
4f193362 1316PHONY += modules_install
a67dc21a 1317modules_install: _emodinst_ _emodinst_post
e6304663 1318
4f193362
PS
1319install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1320PHONY += _emodinst_
a67dc21a 1321_emodinst_:
a67dc21a 1322 $(Q)mkdir -p $(MODLIB)/$(install-dir)
b805aa0e 1323 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4 1324
4f193362 1325PHONY += _emodinst_post
a67dc21a
SR
1326_emodinst_post: _emodinst_
1327 $(call cmd,depmod)
1328
1da177e4
LT
1329clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1330
4f193362 1331PHONY += $(clean-dirs) clean
1da177e4
LT
1332$(clean-dirs):
1333 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1334
1335clean: rm-dirs := $(MODVERDIR)
88d7be03 1336clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1da177e4
LT
1337
1338help:
1339 @echo ' Building external modules.'
1340 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1341 @echo ''
1342 @echo ' modules - default target, build the module(s)'
1343 @echo ' modules_install - install the module'
1344 @echo ' clean - remove generated files in module directory only'
1345 @echo ''
06300b21
SR
1346
1347# Dummies...
4f193362 1348PHONY += prepare scripts
06300b21
SR
1349prepare: ;
1350scripts: ;
1da177e4
LT
1351endif # KBUILD_EXTMOD
1352
88d7be03
MM
1353clean: $(clean-dirs)
1354 $(call cmd,rmdirs)
1355 $(call cmd,rmfiles)
43f67c98 1356 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
88d7be03 1357 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
addbcdbb 1358 -o -name '*.ko.*' \
88d7be03
MM
1359 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1360 -o -name '*.symtypes' -o -name 'modules.order' \
1361 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1362 -o -name '*.gcno' \) -type f -print | xargs rm -f
1363
1da177e4
LT
1364# Generate tags for editors
1365# ---------------------------------------------------------------------------
a680eedc
SR
1366quiet_cmd_tags = GEN $@
1367 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1da177e4 1368
f4ed1009 1369tags TAGS cscope gtags: FORCE
1da177e4
LT
1370 $(call cmd,tags)
1371
1da177e4
LT
1372# Scripts to check various things for consistency
1373# ---------------------------------------------------------------------------
1374
279f3dd3
PF
1375PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1376
1da177e4 1377includecheck:
436f876c 1378 find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4 1379 -name '*.[hcS]' -type f -print | sort \
80007434 1380 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1da177e4
LT
1381
1382versioncheck:
2ee2d292 1383 find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4 1384 -name '*.[hcS]' -type f -print | sort \
80007434 1385 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1da177e4 1386
74425eee
NP
1387coccicheck:
1388 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1389
1da177e4
LT
1390namespacecheck:
1391 $(PERL) $(srctree)/scripts/namespace.pl
1392
295ac051
AB
1393export_report:
1394 $(PERL) $(srctree)/scripts/export_report.pl
1395
1da177e4
LT
1396endif #ifeq ($(config-targets),1)
1397endif #ifeq ($(mixed-targets),1)
1398
c398ff00 1399PHONY += checkstack kernelrelease kernelversion image_name
e3ccf6e3 1400
011e3a9a
JD
1401# UML needs a little special treatment here. It wants to use the host
1402# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1403# else wants $(ARCH), including people doing cross-builds, which means
1404# that $(SUBARCH) doesn't work here.
1405ifeq ($(ARCH), um)
1406CHECKSTACK_ARCH := $(SUBARCH)
1407else
1408CHECKSTACK_ARCH := $(ARCH)
1409endif
1da177e4
LT
1410checkstack:
1411 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
011e3a9a 1412 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1da177e4 1413
7b8ea53d
AW
1414kernelrelease:
1415 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
01ab1788 1416
cb58455c 1417kernelversion:
2244cbd8 1418 @echo $(KERNELVERSION)
1da177e4 1419
c398ff00
MM
1420image_name:
1421 @echo $(KBUILD_IMAGE)
1422
ea01fa9f
BP
1423# Clear a bunch of variables before executing the submake
1424tools/: FORCE
bf35182f 1425 $(Q)mkdir -p $(objtree)/tools
a50e4333 1426 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/
ea01fa9f
BP
1427
1428tools/%: FORCE
bf35182f 1429 $(Q)mkdir -p $(objtree)/tools
a50e4333 1430 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*
ea01fa9f 1431
06300b21
SR
1432# Single targets
1433# ---------------------------------------------------------------------------
bc2546a6 1434# Single targets are compatible with:
e1b8513d 1435# - build with mixed source and output
bc2546a6
SR
1436# - build with separate output dir 'make O=...'
1437# - external modules
1438#
1439# target-dir => where to store outputfile
1440# build-dir => directory in kernel source tree to use
1441
1442ifeq ($(KBUILD_EXTMOD),)
aa360879 1443 build-dir = $(patsubst %/,%,$(dir $@))
bc2546a6
SR
1444 target-dir = $(dir $@)
1445else
1446 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1447 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1448 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1449endif
1450
f6ecebd6 1451%.s: %.c prepare scripts FORCE
bc2546a6 1452 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1453%.i: %.c prepare scripts FORCE
bc2546a6 1454 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1455%.o: %.c prepare scripts FORCE
bc2546a6 1456 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1457%.lst: %.c prepare scripts FORCE
bc2546a6 1458 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1459%.s: %.S prepare scripts FORCE
bc2546a6 1460 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd6 1461%.o: %.S prepare scripts FORCE
bc2546a6 1462 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
15fde675
AG
1463%.symtypes: %.c prepare scripts FORCE
1464 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
06300b21 1465
bc2546a6 1466# Modules
31110ebb
SR
1467/: prepare scripts FORCE
1468 $(cmd_crmodverdir)
1469 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1470 $(build)=$(build-dir)
1471%/: prepare scripts FORCE
7bb9d092 1472 $(cmd_crmodverdir)
06300b21 1473 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
bc2546a6
SR
1474 $(build)=$(build-dir)
1475%.ko: prepare scripts FORCE
7bb9d092 1476 $(cmd_crmodverdir)
06300b21 1477 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
bc2546a6 1478 $(build)=$(build-dir) $(@:.ko=.o)
b805aa0e 1479 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
06300b21 1480
1da177e4
LT
1481# FIXME Should go into a make.lib or something
1482# ===========================================================================
1483
1484quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1485 cmd_rmdirs = rm -rf $(rm-dirs)
1486
1487quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1488 cmd_rmfiles = rm -f $(rm-files)
1489
bc3c26fe 1490# Run depmod only if we have System.map and depmod is executable
50a8ec31 1491quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
569658dd 1492 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
b92021b0 1493 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
50a8ec31 1494
7bb9d092 1495# Create temporary dir for module support files
ab19f879
SR
1496# clean it up only when building all modules
1497cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1498 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1da177e4 1499
1da177e4
LT
1500# read all saved command lines
1501
1502targets := $(wildcard $(sort $(targets)))
1503cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1504
1505ifneq ($(cmd_files),)
1506 $(cmd_files): ; # Do not try to update included dependency files
1507 include $(cmd_files)
1508endif
1509
1da177e4
LT
1510# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1511# Usage:
1512# $(Q)$(MAKE) $(clean)=dir
1513clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1514
1da177e4
LT
1515endif # skip-makefile
1516
4f193362 1517PHONY += FORCE
1da177e4 1518FORCE:
4f193362 1519
4f193362 1520# Declare the contents of the .PHONY variable as phony. We keep that
fe8d0a41 1521# information in a variable so we can use it in if_changed and friends.
4f193362 1522.PHONY: $(PHONY)