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-rw-r--r--Makefile1620
1 files changed, 1190 insertions, 430 deletions
diff --git a/Makefile b/Makefile
index 83da80c47..4b49208d1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,521 +1,1281 @@
1# Makefile for busybox 1VERSION = 1
2PATCHLEVEL = 2
3SUBLEVEL = 1
4EXTRAVERSION = .svn
5NAME=Unnamed
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
13# Do not print "Entering directory ..."
14MAKEFLAGS += --no-print-directory
15
16# We are using a recursive build, so we need to do a little thinking
17# to get the ordering right.
2# 18#
3# Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> 19# Most importantly: sub-Makefiles should only ever modify files in
4# 20# their own directory. If in some directory we have a dependency on
5# Licensed under GPLv2, see the file LICENSE in this tarball for details. 21# a file in another dir (which doesn't happen often, but it's often
22# unavoidable when linking the built-in.o targets which finally
23# turn into busybox), we will call a sub make in that other dir, and
24# after that we are sure that everything which is in that other dir
25# is now up to date.
6# 26#
27# The only cases where we need to modify files which have global
28# effects are thus separated out and done before the recursive
29# descending is started. They are now explicitly listed as the
30# prepare rule.
7 31
8# You shouldn't have to edit anything in this file for configuration 32# To put more focus on warnings, be less verbose as default
9# purposes, try "make help" or read http://busybox.net/FAQ.html. 33# Use 'make V=1' to see the full commands
10 34
11.PHONY: dummy subdirs release distclean clean config oldconfig menuconfig \ 35ifdef V
12 tags check test depend dep buildtree hosttools _all checkhelp \ 36 ifeq ("$(origin V)", "command line")
13 sizes bloatcheck baseline objsizes 37 KBUILD_VERBOSE = $(V)
38 endif
39endif
40ifndef KBUILD_VERBOSE
41 KBUILD_VERBOSE = 0
42endif
14 43
15noconfig_targets := menuconfig config oldconfig randconfig hosttools \ 44# Call sparse as part of compilation of C files
16 defconfig allyesconfig allnoconfig allbareconfig \ 45# Use 'make C=1' to enable sparse checking
17 clean distclean help \
18 release tags
19 46
20nocheck_targets := clean distclean help release tags 47ifdef C
48 ifeq ("$(origin C)", "command line")
49 KBUILD_CHECKSRC = $(C)
50 endif
51endif
52ifndef KBUILD_CHECKSRC
53 KBUILD_CHECKSRC = 0
54endif
21 55
22# the toplevel sourcedir 56# Use make M=dir to specify directory of external module to build
23ifndef top_srcdir 57# Old syntax make ... SUBDIRS=$PWD is still supported
24top_srcdir=$(CURDIR) 58# Setting the environment variable KBUILD_EXTMOD take precedence
59ifdef SUBDIRS
60 KBUILD_EXTMOD ?= $(SUBDIRS)
25endif 61endif
26# toplevel directory of the object-tree 62ifdef M
27ifndef top_builddir 63 ifeq ("$(origin M)", "command line")
28top_builddir=$(CURDIR) 64 KBUILD_EXTMOD := $(M)
65 endif
29endif 66endif
30 67
31export srctree=$(top_srcdir)
32vpath %/Config.in $(srctree)
33 68
34DIRS:=applets archival archival/libunarchive coreutils console-tools \ 69# kbuild supports saving output files in a separate directory.
35 debianutils editors findutils init miscutils modutils networking \ 70# To locate output files in a separate directory two syntaxes are supported.
36 networking/libiproute networking/udhcp procps loginutils shell \ 71# In both cases the working directory must be the root of the kernel src.
37 sysklogd util-linux e2fsprogs libpwdgrp coreutils/libcoreutils \ 72# 1) O=
38 runit libbb 73# Use "make O=dir/to/store/output/files/"
74#
75# 2) Set KBUILD_OUTPUT
76# Set the environment variable KBUILD_OUTPUT to point to the directory
77# where the output files shall be placed.
78# export KBUILD_OUTPUT=dir/to/store/output/files/
79# make
80#
81# The O= assignment takes precedence over the KBUILD_OUTPUT environment
82# variable.
39 83
40SRC_DIRS:=$(patsubst %,$(top_srcdir)/%,$(DIRS))
41 84
42# That's our default target when none is given on the command line 85# KBUILD_SRC is set on invocation of make in OBJ directory
43_all: 86# KBUILD_SRC is not intended to be used by the regular user (for now)
44 87ifeq ($(KBUILD_SRC),)
45CONFIG_CONFIG_IN = $(top_srcdir)/Config.in
46 88
47ifeq ($(BUILD_SRC),) 89# OK, Make called in directory where kernel src resides
90# Do we want to locate output files in a separate directory?
48ifdef O 91ifdef O
49 ifeq ("$(origin O)", "command line") 92 ifeq ("$(origin O)", "command line")
50 BUILD_OUTPUT := $(O) 93 KBUILD_OUTPUT := $(O)
51 top_builddir := $(O)
52 endif 94 endif
95endif
96
97# That's our default target when none is given on the command line
98PHONY := _all
99_all:
100
101ifneq ($(KBUILD_OUTPUT),)
102# Invoke a second make in the output directory, passing relevant variables
103# check that the output directory actually exists
104saved-output := $(KBUILD_OUTPUT)
105KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
106$(if $(KBUILD_OUTPUT),, \
107 $(error output directory "$(saved-output)" does not exist))
108
109PHONY += $(MAKECMDGOALS)
110
111$(filter-out _all,$(MAKECMDGOALS)) _all:
112 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
113 KBUILD_SRC=$(CURDIR) \
114 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
115
116# Leave processing to above invocation of make
117skip-makefile := 1
118endif # ifneq ($(KBUILD_OUTPUT),)
119endif # ifeq ($(KBUILD_SRC),)
120
121# We process the rest of the Makefile if this is the final invocation of make
122ifeq ($(skip-makefile),)
123
124# If building an external module we do not care about the all: rule
125# but instead _all depend on modules
126PHONY += all
127ifeq ($(KBUILD_EXTMOD),)
128_all: all
53else 129else
54# If no alternate output-dir was specified, we build in cwd 130_all: modules
55# We are using BUILD_OUTPUT nevertheless to make sure that we create
56# Rules.mak and the toplevel Makefile, in case they don't exist.
57 BUILD_OUTPUT := $(top_builddir)
58endif 131endif
59 132
60# see if we are in verbose mode 133srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
61BUILD_VERBOSE := 134TOPDIR := $(srctree)
62ifdef V 135# FIXME - TOPDIR is obsolete, use srctree/objtree
63 ifeq ("$(origin V)", "command line") 136objtree := $(CURDIR)
64 BUILD_VERBOSE := $(V) 137src := $(srctree)
65 endif 138obj := $(objtree)
139
140VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
141
142export srctree objtree VPATH TOPDIR
143
144
145# SUBARCH tells the usermode build what the underlying arch is. That is set
146# first, and if a usermode build is happening, the "ARCH=um" on the command
147# line overrides the setting of ARCH below. If a native build is happening,
148# then ARCH is assigned, getting whatever value it gets normally, and
149# SUBARCH is subsequently ignored.
150
151SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
152 -e s/arm.*/arm/ -e s/sa110/arm/ \
153 -e s/s390x/s390/ -e s/parisc64/parisc/ \
154 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
155
156# Cross compiling and selecting different set of gcc/bin-utils
157# ---------------------------------------------------------------------------
158#
159# When performing cross compilation for other architectures ARCH shall be set
160# to the target architecture. (See arch/* for the possibilities).
161# ARCH can be set during invocation of make:
162# make ARCH=ia64
163# Another way is to have ARCH set in the environment.
164# The default ARCH is the host where make is executed.
165
166# CROSS_COMPILE specify the prefix used for all executables used
167# during compilation. Only gcc and related bin-utils executables
168# are prefixed with $(CROSS_COMPILE).
169# CROSS_COMPILE can be set on the command line
170# make CROSS_COMPILE=ia64-linux-
171# Alternatively CROSS_COMPILE can be set in the environment.
172# Default value for CROSS_COMPILE is not to prefix executables
173# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
174
175ARCH ?= $(SUBARCH)
176CROSS_COMPILE ?=
177
178# Architecture as present in compile.h
179UTS_MACHINE := $(ARCH)
180
181# SHELL used by kbuild
182CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
183 else if [ -x /bin/bash ]; then echo /bin/bash; \
184 else echo sh; fi ; fi)
185
186HOSTCC = gcc
187HOSTCXX = g++
188HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
189HOSTCXXFLAGS = -O2
190
191# Decide whether to build built-in, modular, or both.
192# Normally, just do built-in.
193
194KBUILD_MODULES :=
195KBUILD_BUILTIN := 1
196
197# If we have only "make modules", don't compile built-in objects.
198# When we're building modules with modversions, we need to consider
199# the built-in objects during the descend as well, in order to
200# make sure the checksums are uptodate before we record them.
201
202ifeq ($(MAKECMDGOALS),modules)
203 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
66endif 204endif
67ifdef VERBOSE 205
68 ifeq ("$(origin VERBOSE)", "command line") 206# If we have "make <whatever> modules", compile modules
69 BUILD_VERBOSE := $(VERBOSE) 207# in addition to whatever we do anyway.
70 endif 208# Just "make" or "make all" shall build modules as well
209
210ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
211 KBUILD_MODULES := 1
212endif
213
214ifeq ($(MAKECMDGOALS),)
215 KBUILD_MODULES := 1
71endif 216endif
72 217
73ifneq ($(strip $(BUILD_VERBOSE)),) 218export KBUILD_MODULES KBUILD_BUILTIN
74 export BUILD_VERBOSE 219export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
75 CHECK_VERBOSE := -v 220
76# ARFLAGS+=v 221# Beautify output
222# ---------------------------------------------------------------------------
223#
224# Normally, we echo the whole command before executing it. By making
225# that echo $($(quiet)$(cmd)), we now have the possibility to set
226# $(quiet) to choose other forms of output instead, e.g.
227#
228# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
229# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
230#
231# If $(quiet) is empty, the whole command will be printed.
232# If it is set to "quiet_", only the short version will be printed.
233# If it is set to "silent_", nothing wil be printed at all, since
234# the variable $(silent_cmd_cc_o_c) doesn't exist.
235#
236# A simple variant is to prefix commands with $(Q) - that's useful
237# for commands that shall be hidden in non-verbose mode.
238#
239# $(Q)ln $@ :<
240#
241# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
242# If KBUILD_VERBOSE equals 1 then the above command is displayed.
243
244ifeq ($(KBUILD_VERBOSE),1)
245 quiet =
246 Q =
247else
248 quiet=quiet_
249 Q = @
77endif 250endif
78 251
79ifneq ($(strip $(HAVE_DOT_CONFIG)),y) 252# If the user is running make -s (silent mode), suppress echoing of
80# pull in settings early 253# commands
81-include $(top_srcdir)/Rules.mak 254
255ifneq ($(findstring s,$(MAKEFLAGS)),)
256 quiet=silent_
82endif 257endif
83 258
84# All object directories. 259export quiet Q KBUILD_VERBOSE
85OBJ_DIRS := $(DIRS) 260
86all_tree := $(patsubst %,$(top_builddir)/%,$(OBJ_DIRS) scripts scripts/config include) 261
87all_tree: $(all_tree) 262# Look for make include files relative to root of kernel src
88$(all_tree): 263MAKEFLAGS += --include-dir=$(srctree)
89 @mkdir -p "$@" 264
265# We need some generic definitions
266include $(srctree)/scripts/Kbuild.include
267
268# For maximum performance (+ possibly random breakage, uncomment
269# the following)
270
271MAKEFLAGS += -rR
272
273# Make variables (CC, etc...)
274
275AS = $(CROSS_COMPILE)as
276LD = $(CROSS_COMPILE)ld
277CC = $(CROSS_COMPILE)gcc
278CPP = $(CC) -E
279AR = $(CROSS_COMPILE)ar
280NM = $(CROSS_COMPILE)nm
281STRIP = $(CROSS_COMPILE)strip
282OBJCOPY = $(CROSS_COMPILE)objcopy
283OBJDUMP = $(CROSS_COMPILE)objdump
284AWK = awk
285GENKSYMS = scripts/genksyms/genksyms
286DEPMOD = /sbin/depmod
287KALLSYMS = scripts/kallsyms
288PERL = perl
289CHECK = sparse
290
291CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
292MODFLAGS = -DMODULE
293CFLAGS_MODULE = $(MODFLAGS)
294AFLAGS_MODULE = $(MODFLAGS)
295LDFLAGS_MODULE = -r
296CFLAGS_KERNEL =
297AFLAGS_KERNEL =
298
299
300# Use LINUXINCLUDE when you must reference the include/ directory.
301# Needed to be compatible with the O= option
302CFLAGS :=
303CPPFLAGS :=
304AFLAGS :=
305include $(srctree)/Makefile.flags
306
307# Read KERNELRELEASE from .kernelrelease (if it exists)
308KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)
309KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
310
311export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \
312 ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
313 CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
314 HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
315
316export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
317export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
318export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
319
320# When compiling out-of-tree modules, put MODVERDIR in the module
321# tree rather than in the kernel tree. The kernel tree might
322# even be read-only.
323export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
324
325# Files to ignore in find ... statements
326
327RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
328export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
329
330# ===========================================================================
331# Rules shared between *config targets and build targets
332
333# Basic helpers built in scripts/
334PHONY += scripts_basic
335scripts_basic:
336 $(Q)$(MAKE) $(build)=scripts/basic
337
338# To avoid any implicit rule to kick in, define an empty command.
339scripts/basic/%: scripts_basic ;
340
341PHONY += outputmakefile
342# outputmakefile generates a Makefile in the output directory, if using a
343# separate output directory. This allows convenient use of make in the
344# output directory.
345outputmakefile:
346ifneq ($(KBUILD_SRC),)
347 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
348 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
349endif
90 350
91ifneq ($(BUILD_OUTPUT),) 351# To make sure we do not include .config for any of the *config targets
92# Invoke a second make in the output directory, passing relevant variables 352# catch them early, and hand them over to scripts/kconfig/Makefile
93# Check that the output directory actually exists 353# It is allowed to specify more targets when calling make, including
94saved-output := $(BUILD_OUTPUT) 354# mixing *config targets and build targets.
95BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd) 355# For example 'make oldconfig all'.
96$(if $(wildcard $(BUILD_OUTPUT)),, \ 356# Detect when mixed targets is specified, and make a second invocation
97 $(error output directory "$(saved-output)" does not exist)) 357# of make so .config is not included in this case either (for *config).
358
359no-dot-config-targets := clean mrproper distclean \
360 cscope TAGS tags help %docs check%
361
362config-targets := 0
363mixed-targets := 0
364dot-config := 1
365
366ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
367 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
368 dot-config := 0
369 endif
370endif
98 371
99.PHONY: $(MAKECMDGOALS) 372ifeq ($(KBUILD_EXTMOD),)
373 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
374 config-targets := 1
375 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
376 mixed-targets := 1
377 endif
378 endif
379endif
100 380
101$(filter-out _all,$(MAKECMDGOALS)) _all: $(BUILD_OUTPUT)/Rules.mak $(BUILD_OUTPUT)/Makefile all_tree 381ifeq ($(mixed-targets),1)
102 $(Q)$(MAKE) -C $(BUILD_OUTPUT) \ 382# ===========================================================================
103 top_srcdir=$(top_srcdir) \ 383# We're called with mixed targets (*config and build targets).
104 top_builddir=$(top_builddir) \ 384# Handle them one by one.
105 BUILD_SRC=$(top_srcdir) \
106 -f $(CURDIR)/Makefile $@
107 385
108$(BUILD_OUTPUT)/Rules.mak: 386%:: FORCE
109 @echo > $@ 387 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
110 @echo top_srcdir=$(top_srcdir) >> $@
111 @echo top_builddir=$(BUILD_OUTPUT) >> $@
112 @echo include $(top_srcdir)/Rules.mak >> $@
113 388
114$(BUILD_OUTPUT)/Makefile: 389else
115 @echo > $@ 390ifeq ($(config-targets),1)
116 @echo top_srcdir=$(top_srcdir) >> $@ 391# ===========================================================================
117 @echo top_builddir=$(BUILD_OUTPUT) >> $@ 392# *config targets only - make sure prerequisites are updated, and descend
118 @echo BUILD_SRC='$$(top_srcdir)' >> $@ 393# in scripts/kconfig to make the *config target
119 @echo include '$$(BUILD_SRC)'/Makefile >> $@ 394
395# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
396# KBUILD_DEFCONFIG may point out an alternative default configuration
397# used for 'make defconfig'
398-include $(srctree)/arch/$(ARCH)/Makefile
399export KBUILD_DEFCONFIG
400
401config %config: scripts_basic outputmakefile FORCE
402 $(Q)mkdir -p include/linux
403 $(Q)$(MAKE) $(build)=scripts/kconfig $@
404 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
120 405
121# Leave processing to above invocation of make 406else
122skip-makefile := 1 407# ===========================================================================
123endif # ifneq ($(BUILD_OUTPUT),) 408# Build targets only - this includes busybox, arch specific targets, clean
124endif # ifeq ($(BUILD_SRC),) 409# targets and others. In general all targets except *config targets.
410
411ifeq ($(KBUILD_EXTMOD),)
412# Additional helpers built in scripts/
413# Carefully list dependencies so we do not try to build scripts twice
414# in parrallel
415PHONY += scripts
416scripts: scripts_basic include/config/MARKER
417 $(Q)$(MAKE) $(build)=$(@)
418
419scripts_basic: include/autoconf.h
420
421# Objects we will link into busybox / subdirs we need to visit
422core-y := \
423 applets/ \
424
425libs-y := \
426 archival/ \
427 archival/libunarchive/ \
428 console-tools/ \
429 coreutils/ \
430 coreutils/libcoreutils/ \
431 debianutils/ \
432 e2fsprogs/ \
433 e2fsprogs/blkid/ \
434 e2fsprogs/e2p/ \
435 e2fsprogs/ext2fs/ \
436 e2fsprogs/uuid/ \
437 editors/ \
438 findutils/ \
439 init/ \
440 libbb/ \
441 libpwdgrp/ \
442 loginutils/ \
443 miscutils/ \
444 modutils/ \
445 networking/ \
446 networking/libiproute/ \
447 networking/udhcp/ \
448 procps/ \
449 runit/ \
450 shell/ \
451 sysklogd/ \
452 util-linux/ \
453
454endif # KBUILD_EXTMOD
455
456ifeq ($(dot-config),1)
457# In this section, we need .config
125 458
126ifeq ($(skip-makefile),) 459# Read in dependencies to all Kconfig* files, make sure to run
460# oldconfig if changes are detected.
461-include .kconfig.d
127 462
128# We only need a copy of the Makefile for the config targets and reuse 463include .config
129# the rest from the source directory, i.e. we do not cp ALL_MAKEFILES.
130scripts/config/Makefile: $(top_srcdir)/scripts/config/Makefile
131 cp $< $@
132 464
133_all: all 465# If .config needs to be updated, it will be done via the dependency
466# that autoconf has on .config.
467# To avoid any implicit rule to kick in, define an empty command
468.config .kconfig.d: ;
134 469
135help: 470# If .config is newer than include/autoconf.h, someone tinkered
136 @echo 'Cleaning:' 471# with it and forgot to run make oldconfig.
137 @echo ' clean - delete temporary files created by build' 472# If kconfig.d is missing then we are probarly in a cleaned tree so
138 @echo ' distclean - delete all non-source files (including .config)' 473# we execute the config step to be sure to catch updated Kconfig files
139 @echo 474include/autoconf.h: .kconfig.d .config
140 @echo 'Build:' 475 $(Q)mkdir -p include/linux
141 @echo ' all - Executable and documentation' 476 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
142 @echo ' busybox - the swiss-army executable'
143 @echo ' doc - docs/BusyBox.{txt,html,1}'
144 @echo ' html - create html-based cross-reference'
145 @echo
146 @echo 'Configuration:'
147 @echo ' allnoconfig - disable all symbols in .config'
148 @echo ' allyesconfig - enable all symbols in .config (see defconfig)'
149 @echo ' allbareconfig - enable all applets without any sub-features'
150 @echo ' config - text based configurator (of last resort)'
151 @echo ' defconfig - set .config to largest generic configuration'
152 @echo ' menuconfig - interactive curses-based configurator'
153 @echo ' oldconfig - resolve any unresolved symbols in .config'
154 @echo ' hosttools - build sed for the host.'
155 @echo ' You can use these commands if the commands on the host'
156 @echo ' is unusable. Afterwards use it like:'
157 @echo ' make SED="$(top_builddir)/sed"'
158 @echo
159 @echo 'Installation:'
160 @echo ' install - install busybox into $(PREFIX)'
161 @echo ' uninstall'
162 @echo
163 @echo 'Development:'
164 @echo ' baseline - create busybox_old for bloatcheck.'
165 @echo ' bloatcheck - show size difference between old and new versions'
166 @echo ' check - run the test suite for all applets'
167 @echo ' checkhelp - check for missing help-entries in Config.in'
168 @echo ' randconfig - generate a random configuration'
169 @echo ' release - create a distribution tarball'
170 @echo ' sizes - show size of all enabled busybox symbols'
171 @echo ' objsizes - show size of each .o object built'
172 @echo
173 477
478else
479# Dummy target needed, because used as prerequisite
480include/autoconf.h: ;
481endif
174 482
175include $(top_srcdir)/Rules.mak 483# The all: target is the default when no target is given on the
484# command line.
485# This allow a user to issue only 'make' to build a kernel including modules
486# Defaults busybox but it is usually overriden in the arch makefile
487all: busybox
176 488
177ifneq ($(strip $(HAVE_DOT_CONFIG)),y) 489-include $(srctree)/arch/$(ARCH)/Makefile
178 490
179# Default target if none was requested explicitly 491# arch Makefile may override CC so keep this after arch Makefile is included
180all: menuconfig 492#bbox# NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
493CHECKFLAGS += $(NOSTDINC_FLAGS)
181 494
182# warn if no configuration exists and we are asked to build a non-config target 495# warn about C99 declaration after statement
183.config: 496CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
184 @echo "" 497
185 @echo "No $(top_builddir)/$@ found!" 498# disable pointer signedness warnings in gcc 4.0
186 @echo "Please refer to 'make help', section Configuration." 499CFLAGS += $(call cc-option,-Wno-pointer-sign,)
187 @echo "" 500
188 @exit 1 501# Default kernel image to build when no specific target is given.
502# KBUILD_IMAGE may be overruled on the commandline or
503# set in the environment
504# Also any assignments in arch/$(ARCH)/Makefile take precedence over
505# this default value
506export KBUILD_IMAGE ?= busybox
507
508#
509# INSTALL_PATH specifies where to place the updated kernel and system map
510# images. Default is /boot, but you can set it to other values
511export INSTALL_PATH ?= /boot
512
513#
514# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
515# relocations required by build roots. This is not defined in the
516# makefile but the arguement can be passed to make if needed.
517#
518
519MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
520export MODLIB
521
522
523ifeq ($(KBUILD_EXTMOD),)
524busybox-dirs := $(patsubst %/,%,$(filter %/, $(core-y) $(core-m) $(libs-y) $(libs-m)))
525
526busybox-alldirs := $(sort $(busybox-dirs) $(patsubst %/,%,$(filter %/, \
527 $(core-n) $(core-) $(libs-n) $(libs-) \
528 )))
529
530core-y := $(patsubst %/, %/built-in.o, $(core-y))
531libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
532libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
533libs-y := $(libs-y1) $(libs-y2)
189 534
190# configuration 535
536# Build busybox
191# --------------------------------------------------------------------------- 537# ---------------------------------------------------------------------------
538# busybox is build from the objects selected by $(busybox-init) and
539# $(busybox-main). Most are built-in.o files from top-level directories
540# in the kernel tree, others are specified in arch/$(ARCH)Makefile.
541# Ordering when linking is important, and $(busybox-init) must be first.
542#
543# busybox
544# ^
545# |
546# +-< $(busybox-init)
547# | +--< init/version.o + more
548# |
549# +--< $(busybox-main)
550# | +--< driver/built-in.o mm/built-in.o + more
551# |
552# +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
553#
554# busybox version (uname -v) cannot be updated during normal
555# descending-into-subdirs phase since we do not yet know if we need to
556# update busybox.
557# Therefore this step is delayed until just before final link of busybox -
558# except in the kallsyms case where it is done just before adding the
559# symbols to the kernel.
560#
561# System.map is generated to document addresses of all kernel symbols
562
563busybox-all := $(core-y) $(libs-y)
564
565# Rule to link busybox - also used during CONFIG_KALLSYMS
566# May be overridden by arch/$(ARCH)/Makefile
567quiet_cmd_busybox__ ?= LINK $@
568 cmd_busybox__ ?= scripts/trylink $(CC) -o $@ \
569 -Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
570 -Wl,--start-group $(busybox-all) -Wl,--end-group \
571
572# Generate System.map
573quiet_cmd_sysmap = SYSMAP
574 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
575
576# Link of busybox
577# If CONFIG_KALLSYMS is set .version is already updated
578# Generate System.map and verify that the content is consistent
579# Use + in front of the busybox_version rule to silent warning with make -j2
580# First command is ':' to allow us to use + in front of the rule
581define rule_busybox__
582 :
583 $(call cmd,busybox__)
584 $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd
585endef
586
587
588ifdef CONFIG_KALLSYMS
589# Generate section listing all symbols and add it into busybox $(kallsyms.o)
590# It's a three stage process:
591# o .tmp_busybox1 has all symbols and sections, but __kallsyms is
592# empty
593# Running kallsyms on that gives us .tmp_kallsyms1.o with
594# the right size - busybox version (uname -v) is updated during this step
595# o .tmp_busybox2 now has a __kallsyms section of the right size,
596# but due to the added section, some addresses have shifted.
597# From here, we generate a correct .tmp_kallsyms2.o
598# o The correct .tmp_kallsyms2.o is linked into the final busybox.
599# o Verify that the System.map from busybox matches the map from
600# .tmp_busybox2, just in case we did not generate kallsyms correctly.
601# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
602# .tmp_busybox3 and .tmp_kallsyms3.o. This is only meant as a
603# temporary bypass to allow the kernel to be built while the
604# maintainers work out what went wrong with kallsyms.
605
606ifdef CONFIG_KALLSYMS_EXTRA_PASS
607last_kallsyms := 3
608else
609last_kallsyms := 2
610endif
192 611
193scripts/config/conf: scripts/config/Makefile 612kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
194 $(Q)$(MAKE) -C scripts/config conf
195 -@if [ ! -f .config ] ; then \
196 touch .config; \
197 fi
198 613
199scripts/config/mconf: scripts/config/Makefile 614define verify_kallsyms
200 $(Q)$(MAKE) -C scripts/config ncurses conf mconf 615 $(Q)$(if $($(quiet)cmd_sysmap), \
201 -@if [ ! -f .config ] ; then \ 616 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
202 touch .config; \ 617 $(cmd_sysmap) .tmp_busybox$(last_kallsyms) .tmp_System.map
203 fi 618 $(Q)cmp -s System.map .tmp_System.map || \
619 (echo Inconsistent kallsyms data; \
620 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
621 rm .tmp_kallsyms* ; /bin/false )
622endef
204 623
205menuconfig: scripts/config/mconf 624# Update busybox version before link
206 @[ -f .config ] || $(MAKE) $(MAKEFLAGS) defconfig 625# Use + in front of this rule to silent warning about make -j1
207 @./scripts/config/mconf $(CONFIG_CONFIG_IN) 626# First command is ':' to allow us to use + in front of this rule
627cmd_ksym_ld = $(cmd_busybox__)
628define rule_ksym_ld
629 :
630 +$(call cmd,busybox_version)
631 $(call cmd,busybox__)
632 $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd
633endef
208 634
209config: scripts/config/conf 635# Generate .S file with all kernel symbols
210 @./scripts/config/conf $(CONFIG_CONFIG_IN) 636quiet_cmd_kallsyms = KSYM $@
637 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
638 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
211 639
212oldconfig: scripts/config/conf 640.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
213 @./scripts/config/conf -o $(CONFIG_CONFIG_IN) 641 $(call if_changed_dep,as_o_S)
214 642
215randconfig: scripts/config/conf 643.tmp_kallsyms%.S: .tmp_busybox% $(KALLSYMS)
216 @./scripts/config/conf -r $(CONFIG_CONFIG_IN) 644 $(call cmd,kallsyms)
217 645
218allyesconfig: scripts/config/conf 646# .tmp_busybox1 must be complete except kallsyms, so update busybox version
219 @./scripts/config/conf -y $(CONFIG_CONFIG_IN) > /dev/null 647.tmp_busybox1: $(busybox-lds) $(busybox-all) FORCE
648 $(call if_changed_rule,ksym_ld)
220 649
221allnoconfig: scripts/config/conf 650.tmp_busybox2: $(busybox-lds) $(busybox-all) .tmp_kallsyms1.o FORCE
222 @./scripts/config/conf -n $(CONFIG_CONFIG_IN) > /dev/null 651 $(call if_changed,busybox__)
223 652
224# defconfig is allyesconfig minus any features that are specialized enough 653.tmp_busybox3: $(busybox-lds) $(busybox-all) .tmp_kallsyms2.o FORCE
225# or cause enough behavior change that the user really should switch them on 654 $(call if_changed,busybox__)
226# manually if that's what they want. Sort of "maximum sane config".
227 655
228defconfig: scripts/config/conf 656# Needs to visit scripts/ before $(KALLSYMS) can be used.
229 @./scripts/config/conf -y $(CONFIG_CONFIG_IN) > /dev/null 657$(KALLSYMS): scripts ;
230 @$(SED) -i -r -e "s/^(CONFIG_(DEBUG.*|STATIC|SELINUX|NITPICK|BUILD_(AT_ONCE|LIBBUSYBOX)|FEATURE_(DEVFS|FULL_LIBBUSYBOX|SHARED_BUSYBOX|MTAB_SUPPORT|CLEAN_UP|UDHCP_DEBUG)|INSTALL_NO_USR))=.*/# \1 is not set/" .config
231 @./scripts/config/conf -o $(CONFIG_CONFIG_IN) > /dev/null
232 658
659# Generate some data for debugging strange kallsyms problems
660debug_kallsyms: .tmp_map$(last_kallsyms)
233 661
234allbareconfig: scripts/config/conf 662.tmp_map%: .tmp_busybox% FORCE
235 @./scripts/config/conf -y $(CONFIG_CONFIG_IN) > /dev/null 663 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
236 @$(SED) -i -r -e "s/^(CONFIG_(DEBUG|STATIC|SELINUX|DEVFSD|NC_GAPING_SECURITY_HOLE|BUILD_AT_ONCE)).*/# \1 is not set/" .config
237 @$(SED) -i -e "/FEATURE/s/=.*//;/^[^#]/s/.*FEATURE.*/# \0 is not set/;" .config
238 @echo "CONFIG_FEATURE_BUFFERS_GO_ON_STACK=y" >> .config
239 @yes n | ./scripts/config/conf -o $(CONFIG_CONFIG_IN) > /dev/null
240 664
241hosttools: 665.tmp_map3: .tmp_map2
242 $(Q)cp .config .config.bak || noold=yea
243 $(Q)$(MAKE) CC="$(HOSTCC)" CFLAGS="$(HOSTCFLAGS) $(INCS)" allnoconfig
244 $(Q)mv .config .config.in
245 $(Q)(grep -v CONFIG_SED .config.in ; \
246 echo "CONFIG_SED=y" ; ) > .config
247 $(Q)$(MAKE) CC="$(HOSTCC)" CFLAGS="$(HOSTCFLAGS) $(INCS)" oldconfig include/bb_config.h
248 $(Q)$(MAKE) CC="$(HOSTCC)" CFLAGS="$(HOSTCFLAGS) $(INCS)" busybox
249 $(Q)[ -f .config.bak ] && mv .config.bak .config || rm .config
250 mv busybox sed
251 @echo "Now do: $(MAKE) SED=$(top_builddir)/sed <target>"
252 666
253else # ifneq ($(strip $(HAVE_DOT_CONFIG)),y) 667.tmp_map2: .tmp_map1
254 668
255all: busybox busybox.links doc 669endif # ifdef CONFIG_KALLSYMS
256 670
257# In this section, we need .config 671# busybox image - including updated kernel symbols
258-include $(top_builddir)/.config.cmd 672busybox_unstripped: $(busybox-all) FORCE
259include $(patsubst %,%/Makefile.in, $(SRC_DIRS)) 673 $(call if_changed_rule,busybox__)
260 674 $(Q)rm -f .old_version
261endif # ifneq ($(strip $(HAVE_DOT_CONFIG)),y) 675
262 676busybox: busybox_unstripped
263-include $(top_builddir)/.config 677 $(Q)strip -s --remove-section=.note --remove-section=.comment \
264-include $(top_builddir)/.depend 678 busybox_unstripped -o $@
265 679
266 680# The actual objects are generated when descending,
267ifeq ($(strip $(CONFIG_BUILD_AT_ONCE)),y) 681# make sure no implicit rule kicks in
268libraries-y:= 682$(sort $(busybox-all)): $(busybox-dirs) ;
269# Which parts of the internal libs are requested? 683
270# Per default we only want what was actually selected. 684# Handle descending into subdirectories listed in $(busybox-dirs)
271# -a denotes all while -y denotes the selected ones. 685# Preset locale variables to speed up the build process. Limit locale
272ifeq ($(strip $(CONFIG_FEATURE_FULL_LIBBUSYBOX)),y) 686# tweaks to this spot to avoid wrong language settings when running
273LIBRARY_DEFINE:=$(LIBRARY_DEFINE-a) 687# make menuconfig etc.
274LIBRARY_SRC :=$(LIBRARY_SRC-a) 688# Error messages still appears in the original language
275else # CONFIG_FEATURE_FULL_LIBBUSYBOX 689
276LIBRARY_DEFINE:=$(LIBRARY_DEFINE-y) 690PHONY += $(busybox-dirs)
277LIBRARY_SRC :=$(LIBRARY_SRC-y) 691$(busybox-dirs): prepare scripts
278endif # CONFIG_FEATURE_FULL_LIBBUSYBOX 692 $(Q)$(MAKE) $(build)=$@
279APPLET_SRC:=$(APPLET_SRC-y) 693
280APPLETS_DEFINE:=$(APPLETS_DEFINE-y) 694# Build the kernel release string
281else # CONFIG_BUILD_AT_ONCE 695# The KERNELRELEASE is stored in a file named .kernelrelease
282APPLET_SRC:= 696# to be used when executing for example make install or make modules_install
283# no --combine, build archives out of the individual .o 697#
284# This was the old way the binary was built. 698# Take the contents of any files called localversion* and the config
285libbusybox-obj:=archival/libunarchive/libunarchive.a \ 699# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
286 networking/libiproute/libiproute.a \ 700# LOCALVERSION from the command line override all of this
287 libpwdgrp/libpwdgrp.a \ 701
288 coreutils/libcoreutils/libcoreutils.a \ 702nullstring :=
289 libbb/libbb.a 703space := $(nullstring) # end of line
290libbusybox-obj:=$(patsubst %,$(top_builddir)/%,$(libbusybox-obj)) 704
291 705___localver = $(objtree)/localversion* $(srctree)/localversion*
292ifeq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y) 706__localver = $(sort $(wildcard $(___localver)))
293# linking against libbusybox, so don't build the .a already contained in the .so 707# skip backup files (containing '~')
294libraries-y:=$(filter-out $(libbusybox-obj),$(libraries-y)) 708_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
295endif # CONFIG_FEATURE_SHARED_BUSYBOX 709
296endif # CONFIG_BUILD_AT_ONCE 710localver = $(subst $(space),, \
297 711 $(shell cat /dev/null $(_localver)) \
298 712 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
299ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) 713
300LD_LIBBUSYBOX:=libbusybox.so 714# If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
301LIBBUSYBOX_SONAME:=$(LD_LIBBUSYBOX).$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION) 715# and if the SCM is know a tag from the SCM is appended.
302DO_INSTALL_LIBS:=$(LD_LIBBUSYBOX) \ 716# The appended tag is determinded by the SCM used.
303 $(LD_LIBBUSYBOX).$(MAJOR_VERSION) \ 717#
304 $(LD_LIBBUSYBOX).$(MAJOR_VERSION).$(MINOR_VERSION) 718# Currently, only git is supported.
305endif # CONFIG_BUILD_LIBBUSYBOX 719# Other SCMs can edit scripts/setlocalversion and add the appropriate
306 720# checks as needed.
307ifeq ($(strip $(CONFIG_BUILD_AT_ONCE)),y) 721ifdef CONFIG_LOCALVERSION_AUTO
308ifneq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y) 722 _localver-auto = $(shell $(CONFIG_SHELL) \
309# --combine but not linking against libbusybox, so compile all 723 $(srctree)/scripts/setlocalversion $(srctree))
310BUSYBOX_SRC := $(LIBRARY_SRC) 724 localver-auto = $(LOCALVERSION)$(_localver-auto)
311BUSYBOX_DEFINE:= $(LIBRARY_DEFINE)
312endif # !CONFIG_FEATURE_SHARED_BUSYBOX
313$(LIBBUSYBOX_SONAME): $(LIBRARY_SRC)
314else # CONFIG_BUILD_AT_ONCE
315$(LIBBUSYBOX_SONAME): $(libbusybox-obj)
316endif # CONFIG_BUILD_AT_ONCE
317
318ifeq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y)
319LDBUSYBOX:=-L$(top_builddir) -lbusybox
320endif 725endif
321 726
322ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) 727localver-full = $(localver)$(localver-auto)
323$(LIBBUSYBOX_SONAME): 728
324ifndef MAJOR_VERSION 729# Store (new) KERNELRELASE string in .kernelrelease
325 $(error MAJOR_VERSION needed for $@ is not defined) 730kernelrelease = $(KERNELVERSION)$(localver-full)
731.kernelrelease: FORCE
732 $(Q)rm -f $@
733 $(Q)echo $(kernelrelease) > $@
734
735
736# Things we need to do before we recursively start building the kernel
737# or the modules are listed in "prepare".
738# A multi level approach is used. prepareN is processed before prepareN-1.
739# archprepare is used in arch Makefiles and when processed asm symlink,
740# version.h and scripts_basic is processed / created.
741
742# Listed in dependency order
743PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
744
745# prepare-all is deprecated, use prepare as valid replacement
746PHONY += prepare-all
747
748# prepare3 is used to check if we are building in a separate output directory,
749# and if so do:
750# 1) Check that make has not been executed in the kernel src $(srctree)
751# 2) Create the include2 directory, used for the second asm symlink
752prepare3: .kernelrelease
753ifneq ($(KBUILD_SRC),)
754 @echo ' Using $(srctree) as source for kernel'
755 $(Q)if [ -f $(srctree)/.config ]; then \
756 echo " $(srctree) is not clean, please run 'make mrproper'";\
757 echo " in the '$(srctree)' directory.";\
758 /bin/false; \
759 fi;
760 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
761 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
326endif 762endif
327 $(do_link.so) \
328 -Wl,-soname=$(LD_LIBBUSYBOX).$(MAJOR_VERSION) \
329 -Wl,-z,combreloc
330 @rm -f $(DO_INSTALL_LIBS)
331 @for i in $(DO_INSTALL_LIBS); do ln -s $(@) $$i ; done
332 $(do_strip)
333 763
334endif # ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) 764# prepare2 creates a makefile if using a separate output directory
765prepare2: prepare3 outputmakefile
766
767prepare1: prepare2 include/config/MARKER
768ifneq ($(KBUILD_MODULES),)
769 $(Q)mkdir -p $(MODVERDIR)
770 $(Q)rm -f $(MODVERDIR)/*
771endif
335 772
336busybox_unstripped: .depend $(LIBBUSYBOX_SONAME) $(BUSYBOX_SRC) $(APPLET_SRC) $(libraries-y) 773archprepare: prepare1 scripts_basic
337 $(do_link)
338 774
339busybox: busybox_unstripped 775prepare0: archprepare FORCE
340 $(Q)cp busybox_unstripped busybox 776 $(Q)$(MAKE) $(build)=.
341 $(do_strip)
342 777
343%.bflt: %_unstripped 778# All the preparing..
344 $(do_elf2flt) 779prepare prepare-all: prepare0
345 780
346busybox.links: $(top_srcdir)/applets/busybox.mkll include/bb_config.h $(top_srcdir)/include/applets.h 781# Leave this as default for preprocessing busybox.lds.S, which is now
347 $(Q)-$(SHELL) $^ >$@ 782# done in arch/$(ARCH)/kernel/Makefile
348 783
349install: $(top_srcdir)/applets/install.sh busybox busybox.links 784export CPPFLAGS_busybox.lds += -P -C -U$(ARCH)
350 $(Q)DO_INSTALL_LIBS="$(strip $(LIBBUSYBOX_SONAME) $(DO_INSTALL_LIBS))" \ 785
351 $(SHELL) $< $(PREFIX) $(INSTALL_OPTS) 786# FIXME: The asm symlink changes when $(ARCH) changes. That's
352ifeq ($(strip $(CONFIG_FEATURE_SUID)),y) 787# hard to detect, but I suppose "make mrproper" is a good idea
353 @echo 788# before switching between archs anyway.
789
790#bbox# include/asm:
791#bbox# @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
792#bbox# $(Q)if [ ! -d include ]; then mkdir -p include; fi;
793#bbox# @ln -fsn asm-$(ARCH) $@
794
795# Split autoconf.h into include/linux/config/*
796#bbox# piggybacked generation of few .h files
797include/config/MARKER: scripts/basic/split-include include/autoconf.h
798 @echo ' SPLIT include/autoconf.h -> include/config/*'
799 @scripts/basic/split-include include/autoconf.h include/config
800 @echo ' GEN include/bbconfigopts.h'
801 @scripts/mkconfigs >include/bbconfigopts.h
802 @$(MAKE) $(build)=scripts
803 @echo ' GEN include/usage_compressed.h'
804 @scripts/usage_compressed include/usage_compressed.h scripts
805 @touch $@
806
807# Generate some files
808# ---------------------------------------------------------------------------
809
810# KERNELRELEASE can change from a few different places, meaning version.h
811# needs to be updated, so this check is forced on all builds
812
813uts_len := 64
814
815define filechk_version.h
816 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
817 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
818 exit 1; \
819 fi; \
820 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
821 echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
822 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
823 )
824endef
825
826# ---------------------------------------------------------------------------
827
828PHONY += depend dep
829depend dep:
830 @echo '*** Warning: make $@ is unnecessary now.'
831
832# ---------------------------------------------------------------------------
833# Modules
834
835ifdef CONFIG_MODULES
836
837# By default, build modules as well
838
839all: modules
840
841# Build modules
842
843PHONY += modules
844modules: $(busybox-dirs) $(if $(KBUILD_BUILTIN),busybox)
845 @echo ' Building modules, stage 2.';
846 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
847
848
849# Target to prepare building external modules
850PHONY += modules_prepare
851modules_prepare: prepare scripts
852
853# Target to install modules
854PHONY += modules_install
855modules_install: _modinst_ _modinst_post
856
857PHONY += _modinst_
858_modinst_:
859 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
860 echo "Warning: you may need to install module-init-tools"; \
861 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
862 sleep 1; \
863 fi
864 @rm -rf $(MODLIB)/kernel
865 @rm -f $(MODLIB)/source
866 @mkdir -p $(MODLIB)/kernel
867 @ln -s $(srctree) $(MODLIB)/source
868 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
869 rm -f $(MODLIB)/build ; \
870 ln -s $(objtree) $(MODLIB)/build ; \
871 fi
872 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
873
874# If System.map exists, run depmod. This deliberately does not have a
875# dependency on System.map since that would run the dependency tree on
876# busybox. This depmod is only for convenience to give the initial
877# boot a modules.dep even before / is mounted read-write. However the
878# boot script depmod is the master version.
879ifeq "$(strip $(INSTALL_MOD_PATH))" ""
880depmod_opts :=
881else
882depmod_opts := -b $(INSTALL_MOD_PATH) -r
883endif
884PHONY += _modinst_post
885_modinst_post: _modinst_
886 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
887
888else # CONFIG_MODULES
889
890# Modules not configured
891# ---------------------------------------------------------------------------
892
893modules modules_install: FORCE
354 @echo 894 @echo
355 @echo -------------------------------------------------- 895 @echo "The present kernel configuration has modules disabled."
356 @echo You will probably need to make your busybox binary 896 @echo "Type 'make config' and enable loadable module support."
357 @echo setuid root to ensure all configured applets will 897 @echo "Then build a kernel with module support enabled."
358 @echo work properly.
359 @echo --------------------------------------------------
360 @echo 898 @echo
361endif 899 @exit 1
362 900
363uninstall: busybox.links 901endif # CONFIG_MODULES
364 rm -f $(PREFIX)/bin/busybox
365 for i in `cat busybox.links` ; do rm -f $(PREFIX)$$i; done
366ifneq ($(strip $(DO_INSTALL_LIBS)),n)
367 for i in $(LIBBUSYBOX_SONAME) $(DO_INSTALL_LIBS); do \
368 rm -f $(PREFIX)$$i; \
369 done
370endif
371 902
372check test: busybox 903###
373 bindir=$(top_builddir) srcdir=$(top_srcdir)/testsuite SED="$(SED)" \ 904# Cleaning is done on three levels.
374 $(SHELL) $(top_srcdir)/testsuite/runtest $(CHECK_VERBOSE) 905# make clean Delete most generated files
906# Leave enough to build external modules
907# make mrproper Delete the current configuration, and all generated files
908# make distclean Remove editor backup files, patch leftover files and the like
909
910# Directories & files removed with 'make clean'
911CLEAN_DIRS += $(MODVERDIR)
912CLEAN_FILES += busybox System.map \
913 .tmp_kallsyms* .tmp_version .tmp_busybox* .tmp_System.map
914
915# Directories & files removed with 'make mrproper'
916MRPROPER_DIRS += include/config include2
917MRPROPER_FILES += .config .config.old include/asm .version .old_version \
918 include/autoconf.h \
919 .kernelrelease Module.symvers tags TAGS cscope*
920
921# clean - Delete most, but leave enough to build external modules
922#
923clean: rm-dirs := $(CLEAN_DIRS)
924clean: rm-files := $(CLEAN_FILES)
925clean-dirs := $(addprefix _clean_,$(srctree) $(busybox-alldirs))
926
927PHONY += $(clean-dirs) clean archclean
928$(clean-dirs):
929 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
930
931clean: archclean $(clean-dirs)
932 $(call cmd,rmdirs)
933 $(call cmd,rmfiles)
934 @find . $(RCS_FIND_IGNORE) \
935 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
936 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
937 -type f -print | xargs rm -f
938
939# mrproper - Delete all generated files, including .config
940#
941mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
942mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
943mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
375 944
376checkhelp: 945PHONY += $(mrproper-dirs) mrproper archmrproper
377 $(Q)$(top_srcdir)/scripts/checkhelp.awk \ 946$(mrproper-dirs):
378 $(wildcard $(patsubst %,%/Config.in,$(SRC_DIRS) ./)) 947 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
379 948
380sizes: busybox_unstripped 949mrproper: clean archmrproper $(mrproper-dirs)
381 $(NM) --size-sort $(<) 950 $(call cmd,rmdirs)
951 $(call cmd,rmfiles)
382 952
383bloatcheck: busybox_old busybox_unstripped 953# distclean
384 @$(top_srcdir)/scripts/bloat-o-meter busybox_old busybox_unstripped 954#
955PHONY += distclean
385 956
386baseline: busybox_unstripped 957distclean: mrproper
387 @mv busybox_unstripped busybox_old 958 @find $(srctree) $(RCS_FIND_IGNORE) \
959 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
960 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
961 -o -name '.*.rej' -o -size 0 \
962 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
963 -type f -print | xargs rm -f
388 964
389objsizes: busybox_unstripped
390 $(SHELL) $(top_srcdir)/scripts/objsizes
391 965
392# Documentation Targets 966# Packaging of the kernel to various formats
393doc: docs/busybox.pod docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html 967# ---------------------------------------------------------------------------
968# rpm target kept for backward compatibility
969package-dir := $(srctree)/scripts/package
394 970
395docs/busybox.pod : $(top_srcdir)/docs/busybox_header.pod $(top_srcdir)/include/usage.h $(top_srcdir)/docs/busybox_footer.pod $(top_srcdir)/docs/autodocifier.pl 971%pkg: FORCE
396 $(disp_doc) 972 $(Q)$(MAKE) $(build)=$(package-dir) $@
397 $(Q)-mkdir -p docs 973rpm: FORCE
398 $(Q)-( cat $(top_srcdir)/docs/busybox_header.pod ; \ 974 $(Q)$(MAKE) $(build)=$(package-dir) $@
399 $(top_srcdir)/docs/autodocifier.pl $(top_srcdir)/include/usage.h ; \
400 cat $(top_srcdir)/docs/busybox_footer.pod ; ) > docs/busybox.pod
401 975
402docs/BusyBox.txt: docs/busybox.pod
403 $(disp_doc)
404 $(Q)-mkdir -p docs
405 $(Q)-pod2text $< > $@
406 976
407docs/BusyBox.1: docs/busybox.pod 977# Brief documentation of the typical targets used
408 $(disp_doc) 978# ---------------------------------------------------------------------------
409 $(Q)-mkdir -p docs
410 $(Q)-pod2man --center=BusyBox --release="version $(VERSION)" \
411 $< > $@
412 979
413docs/BusyBox.html: docs/busybox.net/BusyBox.html 980boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
414 $(disp_doc) 981boards := $(notdir $(boards))
415 $(Q)-mkdir -p docs
416 $(Q)-rm -f docs/BusyBox.html
417 $(Q)-cp docs/busybox.net/BusyBox.html docs/BusyBox.html
418 982
419docs/busybox.net/BusyBox.html: docs/busybox.pod 983-include Makefile.help
420 $(Q)-mkdir -p docs/busybox.net
421 $(Q)-pod2html --noindex $< > \
422 docs/busybox.net/BusyBox.html
423 $(Q)-rm -f pod2htm*
424 984
425# The nifty new dependency stuff 985# Documentation targets
426scripts/bb_mkdep: $(top_srcdir)/scripts/bb_mkdep.c 986# ---------------------------------------------------------------------------
427 $(do_link.h) 987%docs: scripts_basic FORCE
988 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
989
990else # KBUILD_EXTMOD
991
992###
993# External module support.
994# When building external modules the kernel used as basis is considered
995# read-only, and no consistency checks are made and the make
996# system is not used on the basis kernel. If updates are required
997# in the basis kernel ordinary make commands (without M=...) must
998# be used.
999#
1000# The following are the only valid targets when building external
1001# modules.
1002# make M=dir clean Delete all automatically generated files
1003# make M=dir modules Make all modules in specified dir
1004# make M=dir Same as 'make M=dir modules'
1005# make M=dir modules_install
1006# Install the modules build in the module directory
1007# Assumes install directory is already created
1008
1009# We are always building modules
1010KBUILD_MODULES := 1
1011PHONY += crmodverdir
1012crmodverdir:
1013 $(Q)mkdir -p $(MODVERDIR)
1014 $(Q)rm -f $(MODVERDIR)/*
1015
1016PHONY += $(objtree)/Module.symvers
1017$(objtree)/Module.symvers:
1018 @test -e $(objtree)/Module.symvers || ( \
1019 echo; \
1020 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1021 echo " is missing; modules will have no dependencies and modversions."; \
1022 echo )
1023
1024module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1025PHONY += $(module-dirs) modules
1026$(module-dirs): crmodverdir $(objtree)/Module.symvers
1027 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1028
1029modules: $(module-dirs)
1030 @echo ' Building modules, stage 2.';
1031 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1032
1033PHONY += modules_install
1034modules_install: _emodinst_ _emodinst_post
1035
1036install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1037PHONY += _emodinst_
1038_emodinst_:
1039 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1040 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
1041
1042# Run depmod only is we have System.map and depmod is executable
1043quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1044 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
1045 $(DEPMOD) -ae -F System.map \
1046 $(if $(strip $(INSTALL_MOD_PATH)), \
1047 -b $(INSTALL_MOD_PATH) -r) \
1048 $(KERNELRELEASE); \
1049 fi
1050
1051PHONY += _emodinst_post
1052_emodinst_post: _emodinst_
1053 $(call cmd,depmod)
1054
1055clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1056
1057PHONY += $(clean-dirs) clean
1058$(clean-dirs):
1059 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1060
1061clean: rm-dirs := $(MODVERDIR)
1062clean: $(clean-dirs)
1063 $(call cmd,rmdirs)
1064 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1065 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1066 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1067 -type f -print | xargs rm -f
428 1068
429DEP_INCLUDES := include/bb_config.h 1069help:
1070 @echo ' Building external modules.'
1071 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1072 @echo ''
1073 @echo ' modules - default target, build the module(s)'
1074 @echo ' modules_install - install the module'
1075 @echo ' clean - remove generated files in module directory only'
1076 @echo ''
1077
1078# Dummies...
1079PHONY += prepare scripts
1080prepare: ;
1081scripts: ;
1082endif # KBUILD_EXTMOD
1083
1084# Generate tags for editors
1085# ---------------------------------------------------------------------------
430 1086
431ifeq ($(strip $(CONFIG_BBCONFIG)),y) 1087#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
432DEP_INCLUDES += include/bbconfigopts.h 1088#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1089#Adding $(srctree) adds about 20M on i386 to the size of the output file!
433 1090
434include/bbconfigopts.h: .config $(top_srcdir)/scripts/config/mkconfigs 1091ifeq ($(src),$(obj))
435 $(disp_gen) 1092__srctree =
436 $(Q)$(top_srcdir)/scripts/config/mkconfigs > $@ 1093else
1094__srctree = $(srctree)/
437endif 1095endif
438 1096
439ifeq ($(strip $(CONFIG_FEATURE_COMPRESS_USAGE)),y) 1097ifeq ($(ALLSOURCE_ARCHS),)
440USAGE_BIN:=scripts/usage 1098ifeq ($(ARCH),um)
441$(USAGE_BIN): $(top_srcdir)/scripts/usage.c .config \ 1099ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
442 $(top_srcdir)/include/usage.h 1100else
443 $(do_link.h) 1101ALLINCLUDE_ARCHS := $(ARCH)
444 1102endif
445DEP_INCLUDES += include/usage_compressed.h 1103else
446 1104#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
447include/usage_compressed.h: .config $(USAGE_BIN) \ 1105ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
448 $(top_srcdir)/scripts/usage_compressed 1106endif
449 $(Q)SED="$(SED)" $(SHELL) $(top_srcdir)/scripts/usage_compressed \ 1107
450 "$(top_builddir)/scripts" > $@ 1108ALLSOURCE_ARCHS := $(ARCH)
451endif # CONFIG_FEATURE_COMPRESS_USAGE 1109
452 1110define all-sources
453depend dep: .depend 1111 ( find $(__srctree) $(RCS_FIND_IGNORE) \
454.depend: scripts/bb_mkdep $(USAGE_BIN) $(DEP_INCLUDES) 1112 \( -name include -o -name arch \) -prune -o \
455 $(disp_gen) 1113 -name '*.[chS]' -print; \
456 $(Q)rm -f .depend 1114 for ARCH in $(ALLSOURCE_ARCHS) ; do \
457 $(Q)mkdir -p include/config 1115 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
458 $(Q)scripts/bb_mkdep -I $(top_srcdir)/include $(top_srcdir) > $@.tmp 1116 -name '*.[chS]' -print; \
459 $(Q)mv $@.tmp $@ 1117 done ; \
460 1118 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
461include/bb_config.h: .config 1119 -name '*.[chS]' -print; \
462 @if [ ! -x $(top_builddir)/scripts/config/conf ] ; then \ 1120 find $(__srctree)include $(RCS_FIND_IGNORE) \
463 $(MAKE) -C scripts/config conf; \ 1121 \( -name config -o -name 'asm-*' \) -prune \
464 fi; 1122 -o -name '*.[chS]' -print; \
465 @$(top_builddir)/scripts/config/conf -o $(CONFIG_CONFIG_IN) 1123 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
466 1124 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
467clean: 1125 -name '*.[chS]' -print; \
468 - $(MAKE) -C scripts/config $@ 1126 done ; \
469 - rm -f docs/busybox.dvi docs/busybox.ps \ 1127 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
470 docs/busybox.pod docs/busybox.net/busybox.html \ 1128 -name '*.[chS]' -print )
471 docs/busybox pod2htm* *.gdb *.elf *~ core .*config.log \ 1129endef
472 docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html \ 1130
473 docs/busybox.net/BusyBox.html busybox.links \ 1131quiet_cmd_cscope-file = FILELST cscope.files
474 libbusybox.so* \ 1132 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
475 .config.old busybox busybox_unstripped \ 1133
476 include/usage_compressed.h scripts/usage 1134quiet_cmd_cscope = MAKE cscope.out
477 - rm -r -f _install testsuite/links 1135 cmd_cscope = cscope -b
478 - find . -name .\*.flags -o -name \*.o -o -name \*.om -o -name \*.syn \ 1136
479 -o -name \*.os -o -name \*.osm -o -name \*.a | xargs rm -f 1137cscope: FORCE
480 1138 $(call cmd,cscope-file)
481distclean: clean 1139 $(call cmd,cscope)
482 rm -f scripts/bb_mkdep scripts/usage 1140
483 rm -r -f include/config include/config.h $(DEP_INCLUDES) 1141quiet_cmd_TAGS = MAKE $@
484 find . -name .depend'*' -print0 | xargs -0 rm -f 1142define cmd_TAGS
485 find . -name '*.rej' -print0 | xargs -0 rm -f 1143 rm -f $@; \
486 rm -f .hdepend busybox_old .config .config.old .config.cmd 1144 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
487 1145 echo "-I __initdata,__exitdata,__acquires,__releases \
488release: distclean #doc 1146 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
489 cd ..; \ 1147 --extra=+f --c-kinds=+px"`; \
490 rm -r -f $(PROG)-$(VERSION); \ 1148 $(all-sources) | xargs etags $$ETAGSF -a
491 cp -a busybox $(PROG)-$(VERSION); \ 1149endef
492 \ 1150
493 find $(PROG)-$(VERSION)/ -type d \ 1151TAGS: FORCE
494 -name .svn \ 1152 $(call cmd,TAGS)
495 -print \ 1153
496 -exec rm -r -f {} \; ; \ 1154
497 \ 1155quiet_cmd_tags = MAKE $@
498 find $(PROG)-$(VERSION)/ -type f \ 1156define cmd_tags
499 -name .\#* \ 1157 rm -f $@; \
500 -print \ 1158 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
501 -exec rm -f {} \; ; \ 1159 echo "-I __initdata,__exitdata,__acquires,__releases \
502 \ 1160 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
503 tar -cvzf $(PROG)-$(VERSION).tar.gz $(PROG)-$(VERSION)/; 1161 --extra=+f --c-kinds=+px"`; \
504 1162 $(all-sources) | xargs ctags $$CTAGSF -a
505tags: 1163endef
506 ctags -R . 1164
507 1165tags: FORCE
508# documentation, cross-reference 1166 $(call cmd,tags)
509# Modern distributions already ship synopsis packages (e.g. debian) 1167
510# If you have an old distribution go to http://synopsis.fresco.org/ 1168
511syn_tgt := $(wildcard $(patsubst %,%/*.c,$(SRC_DIRS))) 1169# Scripts to check various things for consistency
512syn := $(patsubst %.c, %.syn, $(syn_tgt)) 1170# ---------------------------------------------------------------------------
513 1171
514%.syn: %.c 1172includecheck:
515 synopsis -p C -l Comments.SSDFilter,Comments.Previous $(INCS) -Wp,verbose,debug,preprocess,cppflags="'$(CFLAGS) $(EXTRA_CFLAGS) $(LDFLAGS) $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) $(APPLETS_DEFINE) $(BUSYBOX_DEFINE)'" -o $@ $< 1173 find * $(RCS_FIND_IGNORE) \
516html: $(syn) 1174 -name '*.[hcS]' -type f -print | sort \
517 synopsis -f HTML -Wf,title="'BusyBox Documentation'" -o $@ $^ 1175 | xargs $(PERL) -w scripts/checkincludes.pl
518 1176
519 1177versioncheck:
520endif # ifeq ($(skip-makefile),) 1178 find * $(RCS_FIND_IGNORE) \
1179 -name '*.[hcS]' -type f -print | sort \
1180 | xargs $(PERL) -w scripts/checkversion.pl
1181
1182namespacecheck:
1183 $(PERL) $(srctree)/scripts/namespace.pl
1184
1185endif #ifeq ($(config-targets),1)
1186endif #ifeq ($(mixed-targets),1)
1187
1188PHONY += checkstack
1189checkstack:
1190 $(OBJDUMP) -d busybox $$(find . -name '*.ko') | \
1191 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1192
1193kernelrelease:
1194 $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \
1195 $(error kernelrelease not valid - run 'make *config' to update it))
1196kernelversion:
1197 @echo $(KERNELVERSION)
1198
1199# Single targets
1200# ---------------------------------------------------------------------------
1201# Single targets are compatible with:
1202# - build whith mixed source and output
1203# - build with separate output dir 'make O=...'
1204# - external modules
1205#
1206# target-dir => where to store outputfile
1207# build-dir => directory in kernel source tree to use
1208
1209ifeq ($(KBUILD_EXTMOD),)
1210 build-dir = $(patsubst %/,%,$(dir $@))
1211 target-dir = $(dir $@)
1212else
1213 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1214 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1215 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1216endif
1217
1218%.s: %.c prepare scripts FORCE
1219 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1220%.i: %.c prepare scripts FORCE
1221 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1222%.o: %.c prepare scripts FORCE
1223 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1224%.lst: %.c prepare scripts FORCE
1225 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1226%.s: %.S prepare scripts FORCE
1227 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1228%.o: %.S prepare scripts FORCE
1229 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1230
1231# Modules
1232/ %/: prepare scripts FORCE
1233 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1234 $(build)=$(build-dir)
1235%.ko: prepare scripts FORCE
1236 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1237 $(build)=$(build-dir) $(@:.ko=.o)
1238 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1239
1240# FIXME Should go into a make.lib or something
1241# ===========================================================================
1242
1243quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1244 cmd_rmdirs = rm -rf $(rm-dirs)
1245
1246quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1247 cmd_rmfiles = rm -f $(rm-files)
1248
1249
1250a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1251 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1252 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
1253
1254quiet_cmd_as_o_S = AS $@
1255cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1256
1257# read all saved command lines
1258
1259targets := $(wildcard $(sort $(targets)))
1260cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1261
1262ifneq ($(cmd_files),)
1263 $(cmd_files): ; # Do not try to update included dependency files
1264 include $(cmd_files)
1265endif
1266
1267# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1268# Usage:
1269# $(Q)$(MAKE) $(clean)=dir
1270clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1271
1272endif # skip-makefile
1273
1274PHONY += FORCE
1275FORCE:
1276
1277-include Makefile.custom
521 1278
1279# Declare the contents of the .PHONY variable as phony. We keep that
1280# information in a variable se we can use it in if_changed and friends.
1281.PHONY: $(PHONY)
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-28 04:32:09 +0000