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Tom Rini99060902014-11-10 16:19:51 -05001VERSION = 2015
2PATCHLEVEL = 01
Wolfgang Denk211e4752012-07-10 09:21:12 +02003SUBLEVEL =
Tom Rini99060902014-11-10 16:19:51 -05004EXTRAVERSION = -rc1
Masahiro Yamada5f30f3b2014-02-04 17:24:30 +09005NAME =
Wolfgang Denkae6d1052008-01-13 00:59:21 +01006
Masahiro Yamada6825a952014-02-04 17:24:28 +09007# *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
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +090013# Do not use make's built-in rules and variables
14# (this increases performance and avoids hard-to-debug behaviour);
15MAKEFLAGS += -rR
Masahiro Yamada6825a952014-02-04 17:24:28 +090016
17# Avoid funny character set dependencies
18unexport LC_ALL
19LC_COLLATE=C
20LC_NUMERIC=C
21export LC_COLLATE LC_NUMERIC
22
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +090023# Avoid interference with shell env settings
24unexport GREP_OPTIONS
25
Masahiro Yamada6825a952014-02-04 17:24:28 +090026# We are using a recursive build, so we need to do a little thinking
27# to get the ordering right.
28#
29# Most importantly: sub-Makefiles should only ever modify files in
30# their own directory. If in some directory we have a dependency on
31# a file in another dir (which doesn't happen often, but it's often
32# unavoidable when linking the built-in.o targets which finally
33# turn into vmlinux), we will call a sub make in that other dir, and
34# after that we are sure that everything which is in that other dir
35# is now up to date.
36#
37# The only cases where we need to modify files which have global
38# effects are thus separated out and done before the recursive
39# descending is started. They are now explicitly listed as the
40# prepare rule.
41
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +090042# Beautify output
43# ---------------------------------------------------------------------------
44#
45# Normally, we echo the whole command before executing it. By making
46# that echo $($(quiet)$(cmd)), we now have the possibility to set
47# $(quiet) to choose other forms of output instead, e.g.
48#
49# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
50# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
51#
52# If $(quiet) is empty, the whole command will be printed.
53# If it is set to "quiet_", only the short version will be printed.
54# If it is set to "silent_", nothing will be printed at all, since
55# the variable $(silent_cmd_cc_o_c) doesn't exist.
56#
57# A simple variant is to prefix commands with $(Q) - that's useful
58# for commands that shall be hidden in non-verbose mode.
59#
60# $(Q)ln $@ :<
61#
62# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
63# If KBUILD_VERBOSE equals 1 then the above command is displayed.
64#
Masahiro Yamada6825a952014-02-04 17:24:28 +090065# To put more focus on warnings, be less verbose as default
66# Use 'make V=1' to see the full commands
67
68ifeq ("$(origin V)", "command line")
69 KBUILD_VERBOSE = $(V)
wdenk7ebf7442002-11-02 23:17:16 +000070endif
Masahiro Yamada6825a952014-02-04 17:24:28 +090071ifndef KBUILD_VERBOSE
72 KBUILD_VERBOSE = 0
73endif
74
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +090075ifeq ($(KBUILD_VERBOSE),1)
76 quiet =
77 Q =
78else
79 quiet=quiet_
80 Q = @
Masahiro Yamada6825a952014-02-04 17:24:28 +090081endif
82
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +090083# If the user is running make -s (silent mode), suppress echoing of
84# commands
85
86ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
87ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
88 quiet=silent_
89endif
90else # make-3.8x
91ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
92 quiet=silent_
93endif
Masahiro Yamada6825a952014-02-04 17:24:28 +090094endif
95
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +090096export quiet Q KBUILD_VERBOSE
Masahiro Yamada6825a952014-02-04 17:24:28 +090097
Masahiro Yamada9e414032014-02-04 17:24:24 +090098# kbuild supports saving output files in a separate directory.
99# To locate output files in a separate directory two syntaxes are supported.
100# In both cases the working directory must be the root of the kernel src.
101# 1) O=
102# Use "make O=dir/to/store/output/files/"
Marian Balakowiczf9328632006-09-01 19:49:50 +0200103#
Masahiro Yamada9e414032014-02-04 17:24:24 +0900104# 2) Set KBUILD_OUTPUT
105# Set the environment variable KBUILD_OUTPUT to point to the directory
106# where the output files shall be placed.
107# export KBUILD_OUTPUT=dir/to/store/output/files/
108# make
Stefan Roese887e2ec2006-09-07 11:51:23 +0200109#
Masahiro Yamada9e414032014-02-04 17:24:24 +0900110# The O= assignment takes precedence over the KBUILD_OUTPUT environment
111# variable.
wdenk7ebf7442002-11-02 23:17:16 +0000112
Masahiro Yamada9e414032014-02-04 17:24:24 +0900113# KBUILD_SRC is set on invocation of make in OBJ directory
114# KBUILD_SRC is not intended to be used by the regular user (for now)
115ifeq ($(KBUILD_SRC),)
116
117# OK, Make called in directory where kernel src resides
118# Do we want to locate output files in a separate directory?
Marian Balakowiczf9328632006-09-01 19:49:50 +0200119ifeq ("$(origin O)", "command line")
Masahiro Yamada9e414032014-02-04 17:24:24 +0900120 KBUILD_OUTPUT := $(O)
Marian Balakowiczf9328632006-09-01 19:49:50 +0200121endif
wdenk7ebf7442002-11-02 23:17:16 +0000122
Masahiro Yamada9e414032014-02-04 17:24:24 +0900123# That's our default target when none is given on the command line
124PHONY := _all
125_all:
126
127# Cancel implicit rules on top Makefile
128$(CURDIR)/Makefile Makefile: ;
129
130ifneq ($(KBUILD_OUTPUT),)
131# Invoke a second make in the output directory, passing relevant variables
132# check that the output directory actually exists
133saved-output := $(KBUILD_OUTPUT)
Masahiro Yamada5a449d72014-03-24 13:55:27 +0900134KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
135 && /bin/pwd)
Masahiro Yamada9e414032014-02-04 17:24:24 +0900136$(if $(KBUILD_OUTPUT),, \
Masahiro Yamada598e2d32014-04-15 13:29:00 +0900137 $(error failed to create output directory "$(saved-output)"))
Masahiro Yamada9e414032014-02-04 17:24:24 +0900138
139PHONY += $(MAKECMDGOALS) sub-make
140
141$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
142 @:
143
144sub-make: FORCE
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +0900145 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
146 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
Masahiro Yamada9e414032014-02-04 17:24:24 +0900147
148# Leave processing to above invocation of make
149skip-makefile := 1
150endif # ifneq ($(KBUILD_OUTPUT),)
151endif # ifeq ($(KBUILD_SRC),)
152
153# We process the rest of the Makefile if this is the final invocation of make
154ifeq ($(skip-makefile),)
155
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +0900156# Do not print "Entering directory ...",
157# but we want to display it when entering to the output directory
158# so that IDEs/editors are able to understand relative filenames.
159MAKEFLAGS += --no-print-directory
160
161# Call a source code checker (by default, "sparse") as part of the
162# C compilation.
163#
164# Use 'make C=1' to enable checking of only re-compiled files.
165# Use 'make C=2' to enable checking of *all* source files, regardless
166# of whether they are re-compiled or not.
167#
168# See the file "Documentation/sparse.txt" for more details, including
169# where to get the "sparse" utility.
170
171ifeq ("$(origin C)", "command line")
172 KBUILD_CHECKSRC = $(C)
173endif
174ifndef KBUILD_CHECKSRC
175 KBUILD_CHECKSRC = 0
176endif
177
178# Use make M=dir to specify directory of external module to build
179# Old syntax make ... SUBDIRS=$PWD is still supported
180# Setting the environment variable KBUILD_EXTMOD take precedence
181ifdef SUBDIRS
182 KBUILD_EXTMOD ?= $(SUBDIRS)
183endif
184
185ifeq ("$(origin M)", "command line")
186 KBUILD_EXTMOD := $(M)
187endif
188
Masahiro Yamada6825a952014-02-04 17:24:28 +0900189# If building an external module we do not care about the all: rule
190# but instead _all depend on modules
Masahiro Yamada9e414032014-02-04 17:24:24 +0900191PHONY += all
Masahiro Yamada6825a952014-02-04 17:24:28 +0900192ifeq ($(KBUILD_EXTMOD),)
Masahiro Yamada9e414032014-02-04 17:24:24 +0900193_all: all
Masahiro Yamada6825a952014-02-04 17:24:28 +0900194else
195_all: modules
196endif
Masahiro Yamada9e414032014-02-04 17:24:24 +0900197
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +0900198ifeq ($(KBUILD_SRC),)
199 # building in the source tree
200 srctree := .
201else
202 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
203 # building in a subdirectory of the source tree
204 srctree := ..
205 else
206 srctree := $(KBUILD_SRC)
207 endif
208endif
209objtree := .
Masahiro Yamada9e414032014-02-04 17:24:24 +0900210src := $(srctree)
211obj := $(objtree)
212
213VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
214
215export srctree objtree VPATH
216
Wolfgang Denk5013c092008-03-02 22:45:33 +0100217# Make sure CDPATH settings don't interfere
218unexport CDPATH
219
Marian Balakowiczf9328632006-09-01 19:49:50 +0200220#########################################################################
221
wdenk7ebf7442002-11-02 23:17:16 +0000222HOSTARCH := $(shell uname -m | \
223 sed -e s/i.86/x86/ \
224 -e s/sun4u/sparc64/ \
225 -e s/arm.*/arm/ \
226 -e s/sa110/arm/ \
227 -e s/ppc64/powerpc/ \
228 -e s/ppc/powerpc/ \
229 -e s/macppc/powerpc/\
230 -e s/sh.*/sh/)
231
232HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
233 sed -e 's/\(cygwin\).*/cygwin/')
234
235export HOSTARCH HOSTOS
236
wdenk7ebf7442002-11-02 23:17:16 +0000237#########################################################################
Marian Balakowiczf9328632006-09-01 19:49:50 +0200238
Mike Frysinger1ea6bcd2009-06-14 23:33:14 -0400239# set default to nothing for native builds
Wolfgang Denka5284ef2007-03-06 18:01:47 +0100240ifeq ($(HOSTARCH),$(ARCH))
Mike Frysinger1ea6bcd2009-06-14 23:33:14 -0400241CROSS_COMPILE ?=
wdenk7ebf7442002-11-02 23:17:16 +0000242endif
wdenk7ebf7442002-11-02 23:17:16 +0000243
Masahiro Yamada51148792014-07-30 14:08:17 +0900244KCONFIG_CONFIG ?= .config
245export KCONFIG_CONFIG
246
Masahiro Yamadaf6322eb2014-02-04 17:24:15 +0900247# SHELL used by kbuild
248CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
249 else if [ -x /bin/bash ]; then echo /bin/bash; \
250 else echo sh; fi ; fi)
251
Jeroen Hofsteeb477fe42014-09-10 20:08:51 +0200252HOSTCC = cc
253HOSTCXX = c++
Masahiro Yamadaf6322eb2014-02-04 17:24:15 +0900254HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
Masahiro Yamada598e2d32014-04-15 13:29:00 +0900255HOSTCXXFLAGS = -O2
256
Masahiro Yamadaf6322eb2014-02-04 17:24:15 +0900257ifeq ($(HOSTOS),cygwin)
258HOSTCFLAGS += -ansi
259endif
260
261# Mac OS X / Darwin's C preprocessor is Apple specific. It
262# generates numerous errors and warnings. We want to bypass it
263# and use GNU C's cpp. To do this we pass the -traditional-cpp
264# option to the compiler. Note that the -traditional-cpp flag
265# DOES NOT have the same semantics as GNU C's flag, all it does
266# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
267#
268# Apple's linker is similar, thanks to the new 2 stage linking
269# multiple symbol definitions are treated as errors, hence the
270# -multiply_defined suppress option to turn off this error.
271#
272ifeq ($(HOSTOS),darwin)
273# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
274DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
275DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
276
277os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
278 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
279
280# Snow Leopards build environment has no longer restrictions as described above
281HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
282HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
283HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
284endif
285
Masahiro Yamada6825a952014-02-04 17:24:28 +0900286# Decide whether to build built-in, modular, or both.
287# Normally, just do built-in.
288
289KBUILD_MODULES :=
290KBUILD_BUILTIN := 1
291
Masahiro Yamada45f0ad92014-06-16 18:56:38 +0900292# If we have only "make modules", don't compile built-in objects.
293# When we're building modules with modversions, we need to consider
294# the built-in objects during the descend as well, in order to
295# make sure the checksums are up to date before we record them.
Masahiro Yamada6825a952014-02-04 17:24:28 +0900296
297ifeq ($(MAKECMDGOALS),modules)
298 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
299endif
300
Masahiro Yamada45f0ad92014-06-16 18:56:38 +0900301# If we have "make <whatever> modules", compile modules
302# in addition to whatever we do anyway.
303# Just "make" or "make all" shall build modules as well
Masahiro Yamada6825a952014-02-04 17:24:28 +0900304
305# U-Boot does not need modules
306#ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
307# KBUILD_MODULES := 1
308#endif
309
310#ifeq ($(MAKECMDGOALS),)
311# KBUILD_MODULES := 1
312#endif
313
314export KBUILD_MODULES KBUILD_BUILTIN
315export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
316
Masahiro Yamada9e414032014-02-04 17:24:24 +0900317# Look for make include files relative to root of kernel src
318MAKEFLAGS += --include-dir=$(srctree)
319
Masahiro Yamadabf4b3de2014-02-04 17:24:18 +0900320# We need some generic definitions (do not try to remake the file).
321$(srctree)/scripts/Kbuild.include: ;
322include $(srctree)/scripts/Kbuild.include
323
Masahiro Yamadaf6322eb2014-02-04 17:24:15 +0900324# Make variables (CC, etc...)
325
326AS = $(CROSS_COMPILE)as
327# Always use GNU ld
328ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
329LD = $(CROSS_COMPILE)ld.bfd
330else
331LD = $(CROSS_COMPILE)ld
332endif
333CC = $(CROSS_COMPILE)gcc
334CPP = $(CC) -E
335AR = $(CROSS_COMPILE)ar
336NM = $(CROSS_COMPILE)nm
337LDR = $(CROSS_COMPILE)ldr
338STRIP = $(CROSS_COMPILE)strip
339OBJCOPY = $(CROSS_COMPILE)objcopy
340OBJDUMP = $(CROSS_COMPILE)objdump
341AWK = awk
Masahiro Yamadaf77d7092014-05-12 11:45:55 +0900342PERL = perl
Masahiro Yamada51148792014-07-30 14:08:17 +0900343PYTHON = python
Masahiro Yamadaf6322eb2014-02-04 17:24:15 +0900344DTC = dtc
345CHECK = sparse
346
347CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
348 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
349
Masahiro Yamada3b612972014-08-31 15:16:53 +0900350KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
Masahiro Yamada2b3c9d32014-02-04 17:24:19 +0900351
352KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
353 -Wno-format-security \
354 -fno-builtin -ffreestanding
355KBUILD_AFLAGS := -D__ASSEMBLY__
356
Masahiro Yamada74241452014-02-24 11:12:09 +0900357# Read UBOOTRELEASE from include/config/uboot.release (if it exists)
358UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
359UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
Masahiro Yamada5f30f3b2014-02-04 17:24:30 +0900360
Masahiro Yamada74241452014-02-24 11:12:09 +0900361export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
Masahiro Yamada026f9cf2014-03-05 16:59:40 +0900362export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
Masahiro Yamadaf6322eb2014-02-04 17:24:15 +0900363export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
364export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
Masahiro Yamada51148792014-07-30 14:08:17 +0900365export MAKE AWK PERL PYTHON
Masahiro Yamada15c939f2014-06-06 10:15:27 +0900366export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
Masahiro Yamadaf6322eb2014-02-04 17:24:15 +0900367
Masahiro Yamada026f9cf2014-03-05 16:59:40 +0900368export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
Masahiro Yamada2b3c9d32014-02-04 17:24:19 +0900369export KBUILD_CFLAGS KBUILD_AFLAGS
370
Masahiro Yamada6825a952014-02-04 17:24:28 +0900371# When compiling out-of-tree modules, put MODVERDIR in the module
372# tree rather than in the kernel tree. The kernel tree might
373# even be read-only.
374export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
375
376# Files to ignore in find ... statements
377
Masahiro Yamada598e2d32014-04-15 13:29:00 +0900378export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
379 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
380 -prune -o
Masahiro Yamada6825a952014-02-04 17:24:28 +0900381export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
382 --exclude CVS --exclude .pc --exclude .hg --exclude .git
383
384# ===========================================================================
385# Rules shared between *config targets and build targets
386
387# Basic helpers built in scripts/
388PHONY += scripts_basic
389scripts_basic:
390 $(Q)$(MAKE) $(build)=scripts/basic
391 $(Q)rm -f .tmp_quiet_recordmcount
392
393# To avoid any implicit rule to kick in, define an empty command.
394scripts/basic/%: scripts_basic ;
395
Masahiro Yamada3341bfe2014-02-04 17:24:42 +0900396PHONY += outputmakefile
397# outputmakefile generates a Makefile in the output directory, if using a
398# separate output directory. This allows convenient use of make in the
399# output directory.
400outputmakefile:
401ifneq ($(KBUILD_SRC),)
402 $(Q)ln -fsn $(srctree) source
403 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
404 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
405endif
406
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900407# To make sure we do not include .config for any of the *config targets
408# catch them early, and hand them over to scripts/kconfig/Makefile
409# It is allowed to specify more targets when calling make, including
410# mixing *config targets and build targets.
411# For example 'make oldconfig all'.
412# Detect when mixed targets is specified, and make a second invocation
413# of make so .config is not included in this case either (for *config).
Masahiro Yamada6825a952014-02-04 17:24:28 +0900414
Masahiro Yamada74241452014-02-24 11:12:09 +0900415version_h := include/generated/version_autogenerated.h
416timestamp_h := include/generated/timestamp_autogenerated.h
417
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900418no-dot-config-targets := clean clobber mrproper distclean \
Masahiro Yamada27651182014-02-21 15:45:11 +0900419 help %docs check% coccicheck \
Tom Rinic7ad5cb2014-10-13 08:38:55 -0400420 ubootversion backup
Masahiro Yamada2b3c9d32014-02-04 17:24:19 +0900421
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900422config-targets := 0
423mixed-targets := 0
424dot-config := 1
425
426ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
427 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
428 dot-config := 0
429 endif
Masahiro Yamada2b3c9d32014-02-04 17:24:19 +0900430endif
431
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900432ifeq ($(KBUILD_EXTMOD),)
433 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
434 config-targets := 1
435 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
436 mixed-targets := 1
437 endif
438 endif
Masahiro Yamada2b3c9d32014-02-04 17:24:19 +0900439endif
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900440
441ifeq ($(mixed-targets),1)
442# ===========================================================================
443# We're called with mixed targets (*config and build targets).
444# Handle them one by one.
445
Masahiro Yamadae7734402014-08-05 15:56:44 +0900446PHONY += $(MAKECMDGOALS) __build_one_by_one
Masahiro Yamada53bca5a2014-02-04 17:24:41 +0900447
Masahiro Yamadae7734402014-08-05 15:56:44 +0900448$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
Masahiro Yamada53bca5a2014-02-04 17:24:41 +0900449 @:
450
Masahiro Yamadae7734402014-08-05 15:56:44 +0900451__build_one_by_one:
Masahiro Yamada53bca5a2014-02-04 17:24:41 +0900452 $(Q)set -e; \
453 for i in $(MAKECMDGOALS); do \
454 $(MAKE) -f $(srctree)/Makefile $$i; \
455 done
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900456
457else
458ifeq ($(config-targets),1)
459# ===========================================================================
460# *config targets only - make sure prerequisites are updated, and descend
461# in scripts/kconfig to make the *config target
462
Masahiro Yamada51148792014-07-30 14:08:17 +0900463KBUILD_DEFCONFIG := sandbox_defconfig
464export KBUILD_DEFCONFIG KBUILD_KCONFIG
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900465
Masahiro Yamada51148792014-07-30 14:08:17 +0900466config: scripts_basic outputmakefile FORCE
Masahiro Yamadaf458e352014-09-04 05:41:34 +0900467 +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/multiconfig.sh $@
Masahiro Yamada51148792014-07-30 14:08:17 +0900468
469%config: scripts_basic outputmakefile FORCE
Masahiro Yamada3ff291f2014-08-21 11:44:34 +0900470 +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/multiconfig.sh $@
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900471
472else
473# ===========================================================================
474# Build targets only - this includes vmlinux, arch specific targets, clean
475# targets and others. In general all targets except *config targets.
476
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900477ifeq ($(dot-config),1)
478# Read in config
Masahiro Yamada51148792014-07-30 14:08:17 +0900479-include include/config/auto.conf
480
481# Read in dependencies to all Kconfig* files, make sure to run
482# oldconfig if changes are detected.
483-include include/config/auto.conf.cmd
484
485# To avoid any implicit rule to kick in, define an empty command
486$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
487
488# If .config is newer than include/config/auto.conf, someone tinkered
489# with it and forgot to run make oldconfig.
490# if auto.conf.cmd is missing then we are probably in a cleaned tree so
491# we execute the config step to be sure to catch updated Kconfig files
492include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
493 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
494
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900495-include include/autoconf.mk
496-include include/autoconf.mk.dep
Masahiro Yamada2b3c9d32014-02-04 17:24:19 +0900497
Masahiro Yamada51148792014-07-30 14:08:17 +0900498# We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
499# is up-to-date. When we switch to a different board configuration, old CONFIG
500# macros are still remaining in include/config/auto.conf. Without the following
501# gimmick, wrong config.mk would be included leading nasty warnings/errors.
502autoconf_is_current := $(if $(wildcard $(KCONFIG_CONFIG)),$(shell find . \
503 -path ./include/config/auto.conf -newer $(KCONFIG_CONFIG)))
504ifneq ($(autoconf_is_current),)
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900505include $(srctree)/config.mk
Masahiro Yamadaced07152014-02-04 17:24:21 +0900506endif
Simon Glassfada9e22013-04-20 08:42:36 +0000507
Ilya Yanokd51dfff2011-06-20 12:45:37 +0000508# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
509# that (or fail if absent). Otherwise, search for a linker script in a
510# standard location.
511
512ifndef LDSCRIPT
Masahiro Yamada4379ac62014-03-11 11:05:19 +0900513 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
Ilya Yanokd51dfff2011-06-20 12:45:37 +0000514 ifdef CONFIG_SYS_LDSCRIPT
515 # need to strip off double quotes
Masahiro Yamada4a377552014-02-25 19:26:48 +0900516 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
Ilya Yanokd51dfff2011-06-20 12:45:37 +0000517 endif
518endif
519
Simon Glassee601972011-11-21 10:49:37 +0000520# If there is no specified link script, we look in a number of places for it
Ilya Yanokd51dfff2011-06-20 12:45:37 +0000521ifndef LDSCRIPT
Ilya Yanokd51dfff2011-06-20 12:45:37 +0000522 ifeq ($(wildcard $(LDSCRIPT)),)
Masahiro Yamada4379ac62014-03-11 11:05:19 +0900523 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
Ilya Yanokd51dfff2011-06-20 12:45:37 +0000524 endif
525 ifeq ($(wildcard $(LDSCRIPT)),)
Masahiro Yamada4379ac62014-03-11 11:05:19 +0900526 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
Ilya Yanokd51dfff2011-06-20 12:45:37 +0000527 endif
528 ifeq ($(wildcard $(LDSCRIPT)),)
Masahiro Yamada4379ac62014-03-11 11:05:19 +0900529 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
Simon Glassee601972011-11-21 10:49:37 +0000530 endif
Ilya Yanokd51dfff2011-06-20 12:45:37 +0000531endif
532
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900533else
Masahiro Yamada51148792014-07-30 14:08:17 +0900534# Dummy target needed, because used as prerequisite
535include/config/auto.conf: ;
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900536endif # $(dot-config)
537
Masahiro Yamada4a8ed8e2014-08-22 19:42:29 +0900538ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
539KBUILD_CFLAGS += -Os
540else
541KBUILD_CFLAGS += -O2
542endif
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900543
544ifdef BUILD_TAG
545KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
546endif
547
548KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
549
550KBUILD_CFLAGS += -g
551# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
552# option to the assembler.
553KBUILD_AFLAGS += -g
554
555# Report stack usage if supported
Masahiro Yamada5b1f1f42013-12-11 20:11:34 +0900556ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
557 KBUILD_CFLAGS += -fstack-usage
558endif
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900559
560KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
561
562# turn jbsr into jsr for m68k
563ifeq ($(ARCH),m68k)
564ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
565KBUILD_AFLAGS += -Wa,-gstabs,-S
566endif
567endif
568
Masahiro Yamada65bb6d82014-04-18 19:09:51 +0900569# Prohibit date/time macros, which would make the build non-deterministic
570KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
571
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900572ifneq ($(CONFIG_SYS_TEXT_BASE),)
573KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
574endif
575
576export CONFIG_SYS_TEXT_BASE
577
Masahiro Yamada6419e142014-08-05 15:56:43 +0900578include $(srctree)/scripts/Makefile.extrawarn
579
Masahiro Yamada0e6256d2014-04-15 14:47:40 +0900580# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
581KBUILD_CPPFLAGS += $(KCPPFLAGS)
582KBUILD_AFLAGS += $(KAFLAGS)
583KBUILD_CFLAGS += $(KCFLAGS)
584
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900585# Use UBOOTINCLUDE when you must reference the include/ directory.
586# Needed to be compatible with the O= option
Masahiro Yamadaf5c66bd2014-03-11 11:05:18 +0900587UBOOTINCLUDE := \
588 -Iinclude \
589 $(if $(KBUILD_SRC), -I$(srctree)/include) \
Masahiro Yamada51148792014-07-30 14:08:17 +0900590 -I$(srctree)/arch/$(ARCH)/include \
591 -include $(srctree)/include/linux/kconfig.h
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900592
593NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
594CHECKFLAGS += $(NOSTDINC_FLAGS)
595
596# FIX ME
Masahiro Yamada026f9cf2014-03-05 16:59:40 +0900597cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
598 $(NOSTDINC_FLAGS)
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900599c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
600
wdenk7ebf7442002-11-02 23:17:16 +0000601#########################################################################
602# U-Boot objects....order is important (i.e. start must be first)
603
Masahiro Yamadae8a8b822013-11-28 12:09:59 +0900604head-y := $(CPUDIR)/start.o
605head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
606head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
wdenk7ebf7442002-11-02 23:17:16 +0000607
Masahiro Yamada9e414032014-02-04 17:24:24 +0900608HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
Marian Balakowiczf9328632006-09-01 19:49:50 +0200609
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900610libs-y += lib/
611libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
612libs-y += $(CPUDIR)/
wdenk1d9f4102004-10-09 22:21:29 +0000613ifdef SOC
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900614libs-y += $(CPUDIR)/$(SOC)/
wdenk1d9f4102004-10-09 22:21:29 +0000615endif
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900616libs-$(CONFIG_OF_EMBED) += dts/
617libs-y += arch/$(ARCH)/lib/
618libs-y += fs/
619libs-y += net/
620libs-y += disk/
621libs-y += drivers/
622libs-y += drivers/dma/
623libs-y += drivers/gpio/
624libs-y += drivers/i2c/
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900625libs-y += drivers/mmc/
626libs-y += drivers/mtd/
627libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
628libs-y += drivers/mtd/onenand/
629libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
630libs-y += drivers/mtd/spi/
631libs-y += drivers/net/
632libs-y += drivers/net/phy/
633libs-y += drivers/pci/
634libs-y += drivers/power/ \
Masahiro Yamadae2906a52013-11-11 14:36:00 +0900635 drivers/power/fuel_gauge/ \
636 drivers/power/mfd/ \
637 drivers/power/pmic/ \
638 drivers/power/battery/
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900639libs-y += drivers/spi/
640libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
641libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
642libs-y += drivers/serial/
643libs-y += drivers/usb/eth/
644libs-y += drivers/usb/gadget/
645libs-y += drivers/usb/host/
646libs-y += drivers/usb/musb/
647libs-y += drivers/usb/musb-new/
648libs-y += drivers/usb/phy/
649libs-y += drivers/usb/ulpi/
650libs-y += common/
651libs-y += lib/libfdt/
652libs-$(CONFIG_API) += api/
653libs-$(CONFIG_HAS_POST) += post/
654libs-y += test/
Simon Glass2e7d35d2014-02-26 15:59:21 -0700655libs-y += test/dm/
Marian Balakowiczf9328632006-09-01 19:49:50 +0200656
Alison Wang24e8bee2013-05-27 22:55:42 +0000657ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900658libs-y += arch/$(ARCH)/imx-common/
Jason Liu18936ee2011-11-25 00:18:01 +0000659endif
660
Stefan Roese41e5ee52014-10-22 12:13:17 +0200661ifneq (,$(filter $(SOC), armada-xp kirkwood))
Stefan Roesed80cca22014-10-22 12:13:05 +0200662libs-y += arch/$(ARCH)/mvebu-common/
663endif
664
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900665libs-$(CONFIG_ARM) += arch/arm/cpu/
666libs-$(CONFIG_PPC) += arch/powerpc/cpu/
Minkyu Kang852bd072010-08-19 13:48:11 +0900667
Masahiro Yamada33a02da2014-03-03 19:03:17 +0900668libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
Masahiro Yamada08e39a82013-11-11 14:35:55 +0900669
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900670libs-y := $(sort $(libs-y))
671
672u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
673
674u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
675
676libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
677
678u-boot-init := $(head-y)
679u-boot-main := $(libs-y)
680
wdenka8c7c702003-12-06 19:49:23 +0000681
wdenk4f7cb082003-09-11 23:06:34 +0000682# Add GCC lib
Masahiro Yamadacd2e46c2014-03-05 16:59:38 +0900683ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
Masahiro Yamadaa86cf892014-02-27 22:40:34 +0900684PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
Wolfgang Denk52b1bf22009-07-23 13:15:59 +0200685else
Masahiro Yamada6825a952014-02-04 17:24:28 +0900686PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
Wolfgang Denk52b1bf22009-07-23 13:15:59 +0200687endif
688PLATFORM_LIBS += $(PLATFORM_LIBGCC)
689export PLATFORM_LIBS
Alexey Brodkine75e73d2014-05-16 12:54:17 +0400690export PLATFORM_LIBGCC
wdenk3d3befa2004-03-14 15:06:13 +0000691
Mike Frysinger6ac9f472009-08-23 02:47:59 -0400692# Special flags for CPP when processing the linker script.
693# Pass the version down so we can handle backwards compatibility
694# on the fly.
695LDPPFLAGS += \
Masahiro Yamada4379ac62014-03-11 11:05:19 +0900696 -include $(srctree)/include/u-boot/u-boot.lds.h \
Simon Glass7e6403a2011-11-21 10:49:40 +0000697 -DCPUDIR=$(CPUDIR) \
Mike Frysinger6ac9f472009-08-23 02:47:59 -0400698 $(shell $(LD) --version | \
699 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
700
wdenk7ebf7442002-11-02 23:17:16 +0000701#########################################################################
wdenkbdccc4f2003-08-05 17:43:17 +0000702#########################################################################
wdenk7ebf7442002-11-02 23:17:16 +0000703
Mike Frysingerf3a14d32010-10-13 22:58:23 -0400704ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
705BOARD_SIZE_CHECK = \
706 @actual=`wc -c $@ | awk '{print $$1}'`; \
Joe Hershbergerd060e6f2012-11-08 10:19:09 +0000707 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
Mike Frysingerf3a14d32010-10-13 22:58:23 -0400708 if test $$actual -gt $$limit; then \
Joe Hershbergerd060e6f2012-11-08 10:19:09 +0000709 echo "$@ exceeds file size limit:" >&2 ; \
710 echo " limit: $$limit bytes" >&2 ; \
711 echo " actual: $$actual bytes" >&2 ; \
712 echo " excess: $$((actual - limit)) bytes" >&2; \
Mike Frysingerf3a14d32010-10-13 22:58:23 -0400713 exit 1; \
714 fi
715else
716BOARD_SIZE_CHECK =
717endif
718
Scott Wood8137af12013-12-14 11:47:32 +0800719# Statically apply RELA-style relocations (currently arm64 only)
720ifneq ($(CONFIG_STATIC_RELA),)
721# $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
722DO_STATIC_RELA = \
723 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
724 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
Masahiro Yamada9e414032014-02-04 17:24:24 +0900725 tools/relocate-rela $(2) $(3) $$start $$end
Scott Wood8137af12013-12-14 11:47:32 +0800726else
727DO_STATIC_RELA =
728endif
729
Mike Frysinger3e883372009-06-15 00:25:19 -0400730# Always append ALL so that arch config.mk's can add custom ones
Simon Glass89742922014-06-02 22:04:47 -0600731ALL-y += u-boot.srec u-boot.bin System.map binary_size_check
Haiying Wange935a372011-01-27 09:44:59 -0500732
Masahiro Yamada9e414032014-02-04 17:24:24 +0900733ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
Prabhakar Kushwaha89ad7be2014-04-08 19:13:34 +0530734ifeq ($(CONFIG_SPL_FSL_PBL),y)
735ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
736else
Masahiro Yamada9e414032014-02-04 17:24:24 +0900737ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
Prabhakar Kushwaha89ad7be2014-04-08 19:13:34 +0530738endif
Masahiro Yamada9e414032014-02-04 17:24:24 +0900739ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
740ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
741ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
Masahiro Yamada0d1e8aa2014-02-21 15:34:30 +0900742ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
Masahiro Yamada2405d092014-05-15 20:37:51 +0900743ifeq ($(CONFIG_SPL_FRAMEWORK),y)
744ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
745endif
Simon Glass714a5622014-02-26 15:59:14 -0700746ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
Vadim Bendeburyb343bbb2013-03-27 14:34:18 +0000747ifneq ($(CONFIG_SPL_TARGET),)
Masahiro Yamada9e414032014-02-04 17:24:24 +0900748ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
Vadim Bendeburyb343bbb2013-03-27 14:34:18 +0000749endif
Masahiro Yamada9e414032014-02-04 17:24:24 +0900750ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
wdenk7ebf7442002-11-02 23:17:16 +0000751
Allen Martin12b7b702012-08-31 08:30:12 +0000752# enable combined SPL/u-boot/dtb rules for tegra
Tom Warren6d6c0ba2012-12-11 13:34:17 +0000753ifneq ($(CONFIG_TEGRA),)
Vidya Sagar7dcd3a22013-10-31 14:51:38 +0530754ifeq ($(CONFIG_SPL),y)
Allen Martin12b7b702012-08-31 08:30:12 +0000755ifeq ($(CONFIG_OF_SEPARATE),y)
Masahiro Yamada9e414032014-02-04 17:24:24 +0900756ALL-y += u-boot-dtb-tegra.bin
Allen Martin12b7b702012-08-31 08:30:12 +0000757else
Masahiro Yamada9e414032014-02-04 17:24:24 +0900758ALL-y += u-boot-nodtb-tegra.bin
Allen Martin12b7b702012-08-31 08:30:12 +0000759endif
760endif
Vidya Sagar7dcd3a22013-10-31 14:51:38 +0530761endif
Allen Martin12b7b702012-08-31 08:30:12 +0000762
Stefan Roeseb2b8a692014-10-22 12:13:24 +0200763# Add optional build target if defined in board/cpu/soc headers
764ifneq ($(CONFIG_BUILD_TARGET),)
765ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
766endif
767
Masahiro Yamadaad0fed42014-02-24 11:12:18 +0900768LDFLAGS_u-boot += $(LDFLAGS_FINAL)
Masahiro Yamada433b2f12014-02-04 17:24:35 +0900769ifneq ($(CONFIG_SYS_TEXT_BASE),)
770LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
771endif
Masahiro Yamada71f84ef2013-10-17 17:34:53 +0900772
Masahiro Yamadaf9c235f2014-02-24 11:12:14 +0900773quiet_cmd_objcopy = OBJCOPY $@
774cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
775
Marek Vasutb97241b2014-03-14 05:00:14 +0100776quiet_cmd_mkimage = MKIMAGE $@
Masahiro Yamada9bf215b2014-02-24 11:12:15 +0900777cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
778 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
779
Masahiro Yamadaee0acfa2014-02-24 11:12:16 +0900780quiet_cmd_cat = CAT $@
781cmd_cat = cat $(filter-out $(PHONY), $^) > $@
782
Masahiro Yamada982a1192014-02-24 11:12:17 +0900783append = cat $(filter-out $< $(PHONY), $^) >> $@
784
785quiet_cmd_pad_cat = CAT $@
786cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
787
Masahiro Yamada656de6b2014-02-04 17:24:37 +0900788all: $(ALL-y)
Masahiro Yamada5add2932014-11-07 03:32:07 +0900789ifneq ($(CONFIG_SYS_GENERIC_BOARD),y)
790 @echo "===================== WARNING ======================"
791 @echo "Please convert this board to generic board."
792 @echo "Otherwise it will be removed by the end of 2014."
793 @echo "See doc/README.generic-board for further information"
794 @echo "===================================================="
795endif
wdenk7ebf7442002-11-02 23:17:16 +0000796
Masahiro Yamada6ab6b2a2014-02-05 11:28:25 +0900797PHONY += dtbs
798dtbs dts/dt.dtb: checkdtc u-boot
799 $(Q)$(MAKE) $(build)=dts dtbs
Simon Glass2c0f79e2011-10-24 19:15:31 +0000800
Masahiro Yamadaee0acfa2014-02-24 11:12:16 +0900801u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
802 $(call if_changed,cat)
Simon Glass2c0f79e2011-10-24 19:15:31 +0000803
Stefano Babice64348f2014-03-31 09:50:35 +0200804%.imx: %.bin
805 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
806
Masahiro Yamada0d1e8aa2014-02-21 15:34:30 +0900807quiet_cmd_copy = COPY $@
808 cmd_copy = cp $< $@
809
810u-boot.dtb: dts/dt.dtb
811 $(call cmd,copy)
812
Masahiro Yamadaf9c235f2014-02-24 11:12:14 +0900813OBJCOPYFLAGS_u-boot.hex := -O ihex
wdenk6310eb92005-01-09 21:28:15 +0000814
Masahiro Yamadaf9c235f2014-02-24 11:12:14 +0900815OBJCOPYFLAGS_u-boot.srec := -O srec
wdenk7ebf7442002-11-02 23:17:16 +0000816
Masahiro Yamadaf9c235f2014-02-24 11:12:14 +0900817u-boot.hex u-boot.srec: u-boot FORCE
818 $(call if_changed,objcopy)
819
820OBJCOPYFLAGS_u-boot.bin := -O binary
821
Chris Packham3ce7a4f2014-07-24 17:27:07 +1200822binary_size_check: u-boot.bin FORCE
Chris Packham67b060b2014-07-24 12:44:25 +1200823 @file_size=$(shell wc -c u-boot.bin | awk '{print $$1}') ; \
Chris Packham3ce7a4f2014-07-24 17:27:07 +1200824 map_size=$(shell cat u-boot.map | \
Simon Glass0b308f12014-06-18 00:10:15 -0600825 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
Chris Packham3ce7a4f2014-07-24 17:27:07 +1200826 | sed 's/0X//g' \
Simon Glass0b308f12014-06-18 00:10:15 -0600827 | bc); \
Simon Glass89742922014-06-02 22:04:47 -0600828 if [ "" != "$$map_size" ]; then \
829 if test $$map_size -ne $$file_size; then \
Chris Packham3ce7a4f2014-07-24 17:27:07 +1200830 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
Simon Glass89742922014-06-02 22:04:47 -0600831 echo " but u-boot.bin shows $$file_size" >&2 ; \
832 exit 1; \
833 fi \
834 fi
835
Masahiro Yamadaf9c235f2014-02-24 11:12:14 +0900836u-boot.bin: u-boot FORCE
837 $(call if_changed,objcopy)
838 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
839 $(BOARD_SIZE_CHECK)
wdenk7ebf7442002-11-02 23:17:16 +0000840
Masahiro Yamada9e414032014-02-04 17:24:24 +0900841u-boot.ldr: u-boot
Mike Frysinger76d82182009-07-21 22:17:36 -0400842 $(CREATE_LDR_ENV)
Sonic Zhang240182d2014-08-12 18:45:26 +0800843 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
Mike Frysingerf3a14d32010-10-13 22:58:23 -0400844 $(BOARD_SIZE_CHECK)
Mike Frysinger94a91e22008-02-04 19:26:57 -0500845
Masahiro Yamadaf9c235f2014-02-24 11:12:14 +0900846OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
Mike Frysinger94a91e22008-02-04 19:26:57 -0500847
Masahiro Yamadaf9c235f2014-02-24 11:12:14 +0900848OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
849
850u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
851 $(call if_changed,objcopy)
Mike Frysinger94a91e22008-02-04 19:26:57 -0500852
Stefan Roeseb40bda62012-08-16 17:54:52 +0200853#
854# U-Boot entry point, needed for booting of full-blown U-Boot
855# from the SPL U-Boot version.
856#
857ifndef CONFIG_SYS_UBOOT_START
858CONFIG_SYS_UBOOT_START := 0
859endif
860
Masahiro Yamada9bf215b2014-02-24 11:12:15 +0900861MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
862 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
863 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
864
Masahiro Yamada4ab3fc52014-03-11 11:05:17 +0900865MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
866 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
Masahiro Yamada9bf215b2014-02-24 11:12:15 +0900867
Masahiro Yamadae4536f82014-03-11 11:05:16 +0900868MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
869 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
Masahiro Yamada9bf215b2014-02-24 11:12:15 +0900870
Simon Glassd18926a2014-06-12 07:24:43 -0600871u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
Masahiro Yamada9bf215b2014-02-24 11:12:15 +0900872 $(call if_changed,mkimage)
wdenkbdccc4f2003-08-05 17:43:17 +0000873
Masahiro Yamada2405d092014-05-15 20:37:51 +0900874MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
875
876u-boot-dtb.img: u-boot-dtb.bin FORCE
877 $(call if_changed,mkimage)
878
Masahiro Yamada9e414032014-02-04 17:24:24 +0900879u-boot.sha1: u-boot.bin
880 tools/ubsha1 u-boot.bin
Heiko Schocher566a4942007-06-22 19:11:54 +0200881
Masahiro Yamada9e414032014-02-04 17:24:24 +0900882u-boot.dis: u-boot
wdenk7ebf7442002-11-02 23:17:16 +0000883 $(OBJDUMP) -d $< > $@
884
Ying Zhang3aa29de2013-08-16 15:16:15 +0800885ifdef CONFIG_TPL
Masahiro Yamada9e414032014-02-04 17:24:24 +0900886SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
Ying Zhang3aa29de2013-08-16 15:16:15 +0800887else
Masahiro Yamada9e414032014-02-04 17:24:24 +0900888SPL_PAYLOAD := u-boot.bin
Ying Zhang3aa29de2013-08-16 15:16:15 +0800889endif
Scott Wood74752ba2012-12-06 13:33:16 +0000890
Masahiro Yamada982a1192014-02-24 11:12:17 +0900891OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
892 --pad-to=$(CONFIG_SPL_PAD_TO)
893u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
894 $(call if_changed,pad_cat)
Ying Zhang3aa29de2013-08-16 15:16:15 +0800895
Masahiro Yamada982a1192014-02-24 11:12:17 +0900896OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
897 --pad-to=$(CONFIG_TPL_PAD_TO)
898tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
899 $(call if_changed,pad_cat)
Heiko Schocher7816f2c2011-07-16 00:06:42 +0000900
Masahiro Yamada630d2342014-02-24 11:12:21 +0900901SPL: spl/u-boot-spl.bin FORCE
902 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
903
904u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
Masahiro Yamada4e0c8ab2014-02-24 11:12:20 +0900905 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
Benoît Thébaudeau7d5a5c72013-04-11 09:35:57 +0000906
Masahiro Yamada9bf215b2014-02-24 11:12:15 +0900907MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
908
909u-boot.ubl: u-boot-with-spl.bin FORCE
910 $(call if_changed,mkimage)
José Miguel Gonçalves277f00f2012-09-19 01:25:26 +0000911
Masahiro Yamada982a1192014-02-24 11:12:17 +0900912MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
913 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
914 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
915spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
916 $(call if_changed,mkimage)
Christian Rieschd36d8852011-12-09 09:47:39 +0000917
Christian Riesch532d5312014-05-07 10:16:28 +0200918OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
Masahiro Yamada982a1192014-02-24 11:12:17 +0900919u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
920 $(call if_changed,pad_cat)
Otavio Salvadora5453552012-08-18 07:25:25 +0000921
Marek Vasut1a9df132014-04-03 19:12:21 +0200922u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
923 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
Masahiro Yamada03c7b3f2014-02-24 11:12:13 +0900924u-boot.sb: u-boot.bin spl/u-boot-spl.bin
Masahiro Yamada07e27ce2014-03-11 11:05:11 +0900925 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
Marek Vasut30b9b932011-11-08 23:18:19 +0000926
Stefan Roese94aebe62012-01-05 11:19:50 +0100927# On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
928# Both images are created using mkimage (crc etc), so that the ROM
929# bootloader can check its integrity. Padding needs to be done to the
930# SPL image (with mkimage header) and not the binary. Otherwise the resulting image
931# which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
932# The resulting image containing both U-Boot images is called u-boot.spr
Masahiro Yamada982a1192014-02-24 11:12:17 +0900933MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
934 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
935spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
936 $(call if_changed,mkimage)
937
938OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
939 --gap-fill=0xff
940u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
941 $(call if_changed,pad_cat)
Stefan Roese94aebe62012-01-05 11:19:50 +0100942
Vitaly Andrianovef509b92014-04-04 13:16:53 -0400943MKIMAGEFLAGS_u-boot-spl.gph = -A $(ARCH) -T gpimage -C none \
944 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n SPL
945spl/u-boot-spl.gph: spl/u-boot-spl.bin FORCE
946 $(call if_changed,mkimage)
947
948OBJCOPYFLAGS_u-boot-spi.gph = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
949 --gap-fill=0
950u-boot-spi.gph: spl/u-boot-spl.gph u-boot.img FORCE
951 $(call if_changed,pad_cat)
952
Khoronzhuk, Ivan0e7f2db2014-07-04 15:03:26 +0300953MKIMAGEFLAGS_u-boot-nand.gph = -A $(ARCH) -T gpimage -C none \
954 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -n U-Boot
955u-boot-nand.gph: u-boot.bin FORCE
956 $(call if_changed,mkimage)
957 @dd if=/dev/zero bs=8 count=1 2>/dev/null >> $@
958
Ian Campbell50827a52014-05-05 11:52:30 +0100959ifneq ($(CONFIG_SUNXI),)
960OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
961 --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
Simon Glass57f878e2014-10-30 20:25:46 -0600962u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin \
963 u-boot$(if $(CONFIG_OF_CONTROL),-dtb,).img FORCE
Ian Campbell50827a52014-05-05 11:52:30 +0100964 $(call if_changed,pad_cat)
965endif
966
Tom Warren6d6c0ba2012-12-11 13:34:17 +0000967ifneq ($(CONFIG_TEGRA),)
Masahiro Yamada982a1192014-02-24 11:12:17 +0900968OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
969u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
970 $(call if_changed,pad_cat)
Stephen Warren9972db52013-05-14 08:00:53 +0000971
972ifeq ($(CONFIG_OF_SEPARATE),y)
Masahiro Yamadaee0acfa2014-02-24 11:12:16 +0900973u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
974 $(call if_changed,cat)
Stephen Warren9972db52013-05-14 08:00:53 +0000975endif
Allen Martin984df4e2012-08-31 08:30:10 +0000976endif
977
Masahiro Yamadaee0acfa2014-02-24 11:12:16 +0900978u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
979 $(call if_changed,cat)
Stefan Roesefb3d2b82012-08-24 17:36:53 +0200980
Prabhakar Kushwaha89ad7be2014-04-08 19:13:34 +0530981#Add a target to create boot binary having SPL binary in PBI format
982#concatenated with u-boot binary. It is need by PowerPC SoC having
983#internal SRAM <= 512KB.
984MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
985 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
986
987spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
988 $(call if_changed,mkimage)
989
990OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
991 --gap-fill=0xff
992
993u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl u-boot.bin FORCE
994 $(call if_changed,pad_cat)
995
Stefan Roeseecddccd2013-02-22 11:36:50 +0100996# PPC4xx needs the SPL at the end of the image, since the reset vector
997# is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
998# and need to introduce a new build target with the full blown U-Boot
999# at the start padded up to the start of the SPL image. And then concat
1000# the SPL image to the end.
Masahiro Yamada982a1192014-02-24 11:12:17 +09001001
1002OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1003 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1004u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1005 $(call if_changed,pad_cat)
Stefan Roeseecddccd2013-02-22 11:36:50 +01001006
Scott Woodf4dc7142013-12-14 11:47:33 +08001007# Create a new ELF from a raw binary file. This is useful for arm64
1008# where static relocation needs to be performed on the raw binary,
1009# but certain simulators only accept an ELF file (but don't do the
1010# relocation).
1011# FIXME refactor dts/Makefile to share target/arch detection
Masahiro Yamada9e414032014-02-04 17:24:24 +09001012u-boot.elf: u-boot.bin
Scott Woodf4dc7142013-12-14 11:47:33 +08001013 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
Masahiro Yamada9e414032014-02-04 17:24:24 +09001014 $< u-boot-elf.o
1015 @$(LD) u-boot-elf.o -o $@ \
Scott Woodf4dc7142013-12-14 11:47:33 +08001016 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
1017 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1018
Masahiro Yamadaad0fed42014-02-24 11:12:18 +09001019# Rule to link u-boot
1020# May be overridden by arch/$(ARCH)/config.mk
1021quiet_cmd_u-boot__ ?= LD $@
1022 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1023 -T u-boot.lds $(u-boot-init) \
1024 --start-group $(u-boot-main) --end-group \
1025 $(PLATFORM_LIBS) -Map u-boot.map
Simon Glass86eb49b2011-10-03 19:26:50 +00001026
Vasili Galkacac8f382014-08-14 12:40:55 +03001027quiet_cmd_smap = GEN common/system_map.o
1028cmd_smap = \
Masahiro Yamadaad0fed42014-02-24 11:12:18 +09001029 smap=`$(call SYSTEM_MAP,u-boot) | \
1030 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1031 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1032 -c $(srctree)/common/system_map.c -o common/system_map.o
Vasili Galkacac8f382014-08-14 12:40:55 +03001033
1034u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
1035 $(call if_changed,u-boot__)
1036ifeq ($(CONFIG_KALLSYMS),y)
1037 $(call cmd,smap)
Masahiro Yamadaad0fed42014-02-24 11:12:18 +09001038 $(call cmd,u-boot__) common/system_map.o
Mike Frysingerecb1dc82009-05-20 04:35:14 -04001039endif
wdenk7ebf7442002-11-02 23:17:16 +00001040
Michal Simek69c0d322014-04-24 15:24:28 +02001041# The actual objects are generated when descending,
Masahiro Yamada656de6b2014-02-04 17:24:37 +09001042# make sure no implicit rule kicks in
1043$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
Marian Balakowiczf9328632006-09-01 19:49:50 +02001044
Masahiro Yamada656de6b2014-02-04 17:24:37 +09001045# Handle descending into subdirectories listed in $(vmlinux-dirs)
1046# Preset locale variables to speed up the build process. Limit locale
1047# tweaks to this spot to avoid wrong language settings when running
1048# make menuconfig etc.
1049# Error messages still appears in the original language
wdenka8c7c702003-12-06 19:49:23 +00001050
Masahiro Yamada656de6b2014-02-04 17:24:37 +09001051PHONY += $(u-boot-dirs)
Masahiro Yamada63780082014-02-24 11:12:10 +09001052$(u-boot-dirs): prepare scripts
Masahiro Yamada656de6b2014-02-04 17:24:37 +09001053 $(Q)$(MAKE) $(build)=$@
Masahiro Yamada940db162014-02-04 17:24:10 +09001054
Masahiro Yamada74241452014-02-24 11:12:09 +09001055tools: prepare
Masahiro Yamada656de6b2014-02-04 17:24:37 +09001056# The "tools" are needed early
1057$(filter-out tools, $(u-boot-dirs)): tools
1058# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1059# is "yes"), so compile examples after U-Boot is compiled.
1060examples: $(filter-out examples, $(u-boot-dirs))
1061
Masahiro Yamada74241452014-02-24 11:12:09 +09001062define filechk_uboot.release
1063 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1064endef
1065
1066# Store (new) UBOOTRELEASE string in include/config/uboot.release
Masahiro Yamada51148792014-07-30 14:08:17 +09001067include/config/uboot.release: include/config/auto.conf FORCE
Masahiro Yamada74241452014-02-24 11:12:09 +09001068 $(call filechk,uboot.release)
1069
1070
Masahiro Yamada3341bfe2014-02-04 17:24:42 +09001071# Things we need to do before we recursively start building the kernel
1072# or the modules are listed in "prepare".
1073# A multi level approach is used. prepareN is processed before prepareN-1.
1074# archprepare is used in arch Makefiles and when processed asm symlink,
1075# version.h and scripts_basic is processed / created.
1076
1077# Listed in dependency order
1078PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1079
1080# prepare3 is used to check if we are building in a separate output directory,
1081# and if so do:
1082# 1) Check that make has not been executed in the kernel src $(srctree)
Masahiro Yamada74241452014-02-24 11:12:09 +09001083prepare3: include/config/uboot.release
Masahiro Yamada3341bfe2014-02-04 17:24:42 +09001084ifneq ($(KBUILD_SRC),)
Masahiro Yamada51148792014-07-30 14:08:17 +09001085 @$(kecho) ' Using $(srctree) as source for U-Boot'
1086 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
Masahiro Yamada3341bfe2014-02-04 17:24:42 +09001087 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1088 echo >&2 " in the '$(srctree)' directory.";\
1089 /bin/false; \
1090 fi;
1091endif
1092
1093# prepare2 creates a makefile if using a separate output directory
1094prepare2: prepare3 outputmakefile
1095
Masahiro Yamada51148792014-07-30 14:08:17 +09001096prepare1: prepare2 $(version_h) $(timestamp_h) \
1097 include/config/auto.conf
Masahiro Yamada331b45f2014-02-25 19:26:47 +09001098ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
1099ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1100 @echo >&2 " Your architecture does not support generic board."
1101 @echo >&2 " Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1102 @/bin/false
1103endif
1104endif
Masahiro Yamada4a377552014-02-25 19:26:48 +09001105ifeq ($(wildcard $(LDSCRIPT)),)
1106 @echo >&2 " Could not find linker script."
1107 @/bin/false
1108endif
wdenk7ebf7442002-11-02 23:17:16 +00001109
Masahiro Yamada3341bfe2014-02-04 17:24:42 +09001110archprepare: prepare1 scripts_basic
wdenka8c7c702003-12-06 19:49:23 +00001111
Masahiro Yamada6a44d802014-02-24 11:12:11 +09001112prepare0: archprepare FORCE
1113 $(Q)$(MAKE) $(build)=.
wdenk7ebf7442002-11-02 23:17:16 +00001114
Masahiro Yamada3341bfe2014-02-04 17:24:42 +09001115# All the preparing..
1116prepare: prepare0
Che-liang Chiou349e83f2011-10-17 21:04:15 +00001117
Masahiro Yamada74241452014-02-24 11:12:09 +09001118# Generate some files
1119# ---------------------------------------------------------------------------
1120
1121define filechk_version.h
1122 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1123 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1124 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1125 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1126endef
1127
1128define filechk_timestamp.h
1129 (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1130 LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1131endef
1132
Masahiro Yamada2e6b2f62014-03-10 10:42:27 +09001133$(version_h): include/config/uboot.release FORCE
Masahiro Yamada74241452014-02-24 11:12:09 +09001134 $(call filechk,version.h)
1135
1136$(timestamp_h): $(srctree)/Makefile FORCE
1137 $(call filechk,timestamp.h)
1138
Masahiro Yamada63780082014-02-24 11:12:10 +09001139# ---------------------------------------------------------------------------
1140
1141PHONY += depend dep
1142depend dep:
1143 @echo '*** Warning: make $@ is unnecessary now.'
1144
1145# ---------------------------------------------------------------------------
Masahiro Yamada04a34c92014-02-24 11:12:19 +09001146quiet_cmd_cpp_lds = LDS $@
Masahiro Yamada395e60c2014-04-09 20:10:43 +09001147cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1148 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
Masahiro Yamada63780082014-02-24 11:12:10 +09001149
Masahiro Yamada04a34c92014-02-24 11:12:19 +09001150u-boot.lds: $(LDSCRIPT) prepare FORCE
Masahiro Yamada395e60c2014-04-09 20:10:43 +09001151 $(call if_changed_dep,cpp_lds)
Wolfgang Denk1aada9c2009-08-17 14:00:53 +02001152
Masahiro Yamada982a1192014-02-24 11:12:17 +09001153spl/u-boot-spl.bin: spl/u-boot-spl
1154 @:
1155spl/u-boot-spl: tools prepare
Masahiro Yamadac7163082014-06-09 15:14:11 +09001156 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
Daniel Schwierzeck5df2ee22011-07-13 05:11:04 +00001157
Ian Campbell50827a52014-05-05 11:52:30 +01001158spl/sunxi-spl.bin: spl/u-boot-spl
1159 @:
1160
Masahiro Yamada63780082014-02-24 11:12:10 +09001161tpl/u-boot-tpl.bin: tools prepare
Masahiro Yamada51148792014-07-30 14:08:17 +09001162 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
Ying Zhang3aa29de2013-08-16 15:16:15 +08001163
Igor Grinberg8d819ab2014-07-15 15:52:00 +03001164TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
Jean-Christophe PLAGNIOL-VILLARDa340c322007-11-25 18:45:47 +01001165
Horst Kronstorfer857d9ea2011-07-18 01:21:18 +00001166FIND := find
1167FINDFLAGS := -L
1168
Marian Balakowiczf9328632006-09-01 19:49:50 +02001169tags ctags:
Masahiro Yamada9e414032014-02-04 17:24:24 +09001170 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
Li Yange5e4e702009-12-09 18:13:26 +08001171 -name '*.[chS]' -print`
wdenk7ebf7442002-11-02 23:17:16 +00001172
1173etags:
Igor Grinberg8d819ab2014-07-15 15:52:00 +03001174 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
Li Yange5e4e702009-12-09 18:13:26 +08001175 -name '*.[chS]' -print`
Li Yangffda5862008-02-29 11:46:05 +08001176cscope:
Horst Kronstorfer857d9ea2011-07-18 01:21:18 +00001177 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1178 cscope.files
Li Yangffda5862008-02-29 11:46:05 +08001179 cscope -b -q -k
wdenk7ebf7442002-11-02 23:17:16 +00001180
Mike Frysingerecb1dc82009-05-20 04:35:14 -04001181SYSTEM_MAP = \
1182 $(NM) $1 | \
wdenk7ebf7442002-11-02 23:17:16 +00001183 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
Mike Frysingerecb1dc82009-05-20 04:35:14 -04001184 LC_ALL=C sort
Masahiro Yamada9e414032014-02-04 17:24:24 +09001185System.map: u-boot
Masahiro Yamadabc8bb6e2013-11-11 14:36:01 +09001186 @$(call SYSTEM_MAP,$<) > $@
wdenk7ebf7442002-11-02 23:17:16 +00001187
Stephen Warren501ebdf2013-07-24 10:09:16 -07001188checkdtc:
1189 @if test $(call dtc-version) -lt 0104; then \
1190 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1191 false; \
1192 fi
1193
wdenk7ebf7442002-11-02 23:17:16 +00001194#########################################################################
wdenk7ebf7442002-11-02 23:17:16 +00001195
Scott Wood54799e42013-12-14 11:47:34 +08001196# ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1197# R_AARCH64_RELATIVE (64-bit).
Masahiro Yamada9e414032014-02-04 17:24:24 +09001198checkarmreloc: u-boot
Scott Wood54799e42013-12-14 11:47:34 +08001199 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1200 grep R_A | sort -u`"; \
1201 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1202 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1203 echo "$< contains unexpected relocations: $$RELOC"; \
1204 false; \
1205 fi
Albert ARIBAUDc37980c2013-06-11 14:17:30 +02001206
Masahiro Yamada74241452014-02-24 11:12:09 +09001207env: scripts_basic
Masahiro Yamada3f76e982014-02-04 17:24:38 +09001208 $(Q)$(MAKE) $(build)=tools/$@
Mike Frysinger0358df42010-08-15 00:03:21 -04001209
Masahiro Yamada4642e002014-03-31 17:33:51 +09001210tools-only: scripts_basic $(version_h) $(timestamp_h)
1211 $(Q)$(MAKE) $(build)=tools
1212
Masahiro Yamada1ec8b4e2014-03-03 11:06:18 +09001213tools-all: export HOST_TOOLS_ALL=y
Masahiro Yamada2887c472014-02-04 17:24:39 +09001214tools-all: env tools ;
Mike Frysinger0358df42010-08-15 00:03:21 -04001215
Masahiro Yamadadb5b3392014-03-03 11:06:19 +09001216cross_tools: export CROSS_BUILD_TOOLS=y
1217cross_tools: tools ;
1218
Wolfgang Denk4e53a252006-10-25 00:43:17 +02001219.PHONY : CHANGELOG
1220CHANGELOG:
Ben Warrenb985b5d2006-10-26 14:38:25 -04001221 git log --no-merges U-Boot-1_1_5.. | \
1222 unexpand -a | sed -e 's/\s\s*$$//' > $@
Wolfgang Denk4e53a252006-10-25 00:43:17 +02001223
Harald Welte0a823aa2008-07-09 22:30:30 +08001224include/license.h: tools/bin2header COPYING
Wolfgang Denk0e42ada2010-05-27 23:18:33 +02001225 cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
wdenk7ebf7442002-11-02 23:17:16 +00001226#########################################################################
1227
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001228###
1229# Cleaning is done on three levels.
1230# make clean Delete most generated files
1231# Leave enough to build external modules
1232# make mrproper Delete the current configuration, and all generated files
1233# make distclean Remove editor backup files, patch leftover files and the like
wdenk7ebf7442002-11-02 23:17:16 +00001234
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001235# Directories & files removed with 'make clean'
Masahiro Yamada48aa812d2014-10-30 10:58:32 +09001236CLEAN_DIRS += $(MODVERDIR) \
1237 $(foreach d, spl tpl, $(patsubst %,$d/%, \
Masahiro Yamada51148792014-07-30 14:08:17 +09001238 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
Masahiro Yamada48aa812d2014-10-30 10:58:32 +09001239
1240CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1241 u-boot* MLO* SPL System.map
Mike Frysinger9f4a4202009-10-01 12:11:54 -04001242
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001243# Directories & files removed with 'make mrproper'
Masahiro Yamada51148792014-07-30 14:08:17 +09001244MRPROPER_DIRS += include/config include/generated spl tpl \
Masahiro Yamada45f0ad92014-06-16 18:56:38 +09001245 .tmp_objdiff
Masahiro Yamada51148792014-07-30 14:08:17 +09001246MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1247 ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
wdenk7ebf7442002-11-02 23:17:16 +00001248
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001249# clean - Delete most, but leave enough to build external modules
1250#
1251clean: rm-dirs := $(CLEAN_DIRS)
1252clean: rm-files := $(CLEAN_FILES)
wdenk7ebf7442002-11-02 23:17:16 +00001253
Masahiro Yamada6bd04bb2014-03-28 14:55:02 +09001254clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
Andy Fleming734329f2011-11-21 13:40:43 +00001255
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001256clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
wdenk7ebf7442002-11-02 23:17:16 +00001257
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001258PHONY += $(clean-dirs) clean archclean
1259$(clean-dirs):
1260 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1261
1262# TODO: Do not use *.cfgtmp
1263clean: $(clean-dirs)
1264 $(call cmd,rmdirs)
1265 $(call cmd,rmfiles)
1266 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1267 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1268 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1269 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1270 -o -name '*.symtypes' -o -name 'modules.order' \
1271 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1272 -o -name '*.gcno' \) -type f -print | xargs rm -f
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001273
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001274# mrproper - Delete all generated files, including .config
1275#
1276mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1277mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1278mrproper-dirs := $(addprefix _mrproper_,scripts)
1279
1280PHONY += $(mrproper-dirs) mrproper archmrproper
1281$(mrproper-dirs):
1282 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1283
Masahiro Yamada48aa812d2014-10-30 10:58:32 +09001284mrproper: clean $(mrproper-dirs)
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001285 $(call cmd,rmdirs)
1286 $(call cmd,rmfiles)
Masahiro Yamadae9c16a82014-06-24 18:15:45 +09001287 @rm -f arch/*/include/asm/arch
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001288
1289# distclean
1290#
1291PHONY += distclean
Masahiro Yamada433b2f12014-02-04 17:24:35 +09001292
1293distclean: mrproper
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001294 @find $(srctree) $(RCS_FIND_IGNORE) \
1295 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1296 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
Masahiro Yamada598e2d32014-04-15 13:29:00 +09001297 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1298 -o -name '*.pyc' \) \
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001299 -type f -print | xargs rm -f
Roger Meierfd18a892014-08-20 22:10:29 +02001300 @rm -f boards.cfg
wdenk7ebf7442002-11-02 23:17:16 +00001301
1302backup:
Masahiro Yamada4379ac62014-03-11 11:05:19 +09001303 F=`basename $(srctree)` ; cd .. ; \
Ilya Yanokd6b93712010-06-21 18:13:21 +04001304 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
wdenk7ebf7442002-11-02 23:17:16 +00001305
Masahiro Yamadaed1ca522014-02-24 11:12:23 +09001306help:
1307 @echo 'Cleaning targets:'
Masahiro Yamada48aa812d2014-10-30 10:58:32 +09001308 @echo ' clean - Remove most generated files but keep the config'
Masahiro Yamadaed1ca522014-02-24 11:12:23 +09001309 @echo ' mrproper - Remove all generated files + config + various backup files'
1310 @echo ' distclean - mrproper + remove editor backup and patch files'
1311 @echo ''
Masahiro Yamada51148792014-07-30 14:08:17 +09001312 @echo 'Configuration targets:'
1313 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1314 @echo ''
Masahiro Yamadaed1ca522014-02-24 11:12:23 +09001315 @echo 'Other generic targets:'
1316 @echo ' all - Build all necessary images depending on configuration'
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +09001317 @echo '* u-boot - Build the bare u-boot'
Masahiro Yamadaed1ca522014-02-24 11:12:23 +09001318 @echo ' dir/ - Build all files in dir and below'
1319 @echo ' dir/file.[oisS] - Build specified target only'
1320 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1321 @echo ' (requires a recent binutils and recent build (System.map))'
Igor Grinberg5fc2f922014-07-15 15:52:02 +03001322 @echo ' tags/ctags - Generate ctags file for editors'
1323 @echo ' etags - Generate etags file for editors'
Masahiro Yamadaed1ca522014-02-24 11:12:23 +09001324 @echo ' cscope - Generate cscope index'
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +09001325 @echo ' ubootrelease - Output the release version string (use with make -s)'
1326 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
Masahiro Yamadaed1ca522014-02-24 11:12:23 +09001327 @echo ''
1328 @echo 'Static analysers'
1329 @echo ' checkstack - Generate a list of stack hogs'
1330 @echo ''
1331 @echo 'Documentation targets:'
1332 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1333 @echo ''
1334 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1335 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1336 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1337 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1338 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1339 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1340 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1341 @echo ' 1: warnings which may be relevant and do not occur too often'
1342 @echo ' 2: warnings which occur quite often but may still be relevant'
1343 @echo ' 3: more obscure warnings, can most likely be ignored'
1344 @echo ' Multiple levels can be combined with W=12 or W=123'
1345 @echo ''
1346 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1347 @echo 'For further info see the ./README file'
1348
Masahiro Yamada8fac9c72014-02-05 10:52:50 +09001349
1350# Documentation targets
1351# ---------------------------------------------------------------------------
1352%docs: scripts_basic FORCE
1353 $(Q)$(MAKE) $(build)=scripts build_docproc
1354 $(Q)$(MAKE) $(build)=doc/DocBook $@
1355
Masahiro Yamada3341bfe2014-02-04 17:24:42 +09001356# Dummies...
1357PHONY += prepare scripts
1358prepare: ;
1359scripts: ;
Masahiro Yamada9e414032014-02-04 17:24:24 +09001360
Masahiro Yamada433b2f12014-02-04 17:24:35 +09001361endif #ifeq ($(config-targets),1)
1362endif #ifeq ($(mixed-targets),1)
1363
Masahiro Yamadaed1ca522014-02-24 11:12:23 +09001364PHONY += checkstack ubootrelease ubootversion
1365
1366checkstack:
1367 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1368 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1369
1370ubootrelease:
1371 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1372
1373ubootversion:
1374 @echo $(UBOOTVERSION)
1375
Masahiro Yamada886d86e2014-02-24 11:12:22 +09001376# Single targets
1377# ---------------------------------------------------------------------------
1378# Single targets are compatible with:
1379# - build with mixed source and output
1380# - build with separate output dir 'make O=...'
1381# - external modules
1382#
1383# target-dir => where to store outputfile
1384# build-dir => directory in kernel source tree to use
1385
1386ifeq ($(KBUILD_EXTMOD),)
1387 build-dir = $(patsubst %/,%,$(dir $@))
1388 target-dir = $(dir $@)
1389else
1390 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1391 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1392 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1393endif
1394
1395%.s: %.c prepare scripts FORCE
1396 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1397%.i: %.c prepare scripts FORCE
1398 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1399%.o: %.c prepare scripts FORCE
1400 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1401%.lst: %.c prepare scripts FORCE
1402 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1403%.s: %.S prepare scripts FORCE
1404 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1405%.o: %.S prepare scripts FORCE
1406 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1407%.symtypes: %.c prepare scripts FORCE
1408 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1409
1410# Modules
1411/: prepare scripts FORCE
1412 $(cmd_crmodverdir)
1413 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1414 $(build)=$(build-dir)
1415%/: prepare scripts FORCE
1416 $(cmd_crmodverdir)
1417 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1418 $(build)=$(build-dir)
1419%.ko: prepare scripts FORCE
1420 $(cmd_crmodverdir)
1421 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1422 $(build)=$(build-dir) $(@:.ko=.o)
1423 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1424
Michal Simek69c0d322014-04-24 15:24:28 +02001425# FIXME Should go into a make.lib or something
Masahiro Yamada886d86e2014-02-24 11:12:22 +09001426# ===========================================================================
1427
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001428quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1429 cmd_rmdirs = rm -rf $(rm-dirs)
1430
1431quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1432 cmd_rmfiles = rm -f $(rm-files)
1433
Masahiro Yamadaf9c235f2014-02-24 11:12:14 +09001434# read all saved command lines
1435
1436targets := $(wildcard $(sort $(targets)))
1437cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1438
1439ifneq ($(cmd_files),)
1440 $(cmd_files): ; # Do not try to update included dependency files
1441 include $(cmd_files)
1442endif
1443
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001444# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1445# Usage:
1446# $(Q)$(MAKE) $(clean)=dir
Masahiro Yamada176d0982014-10-30 11:06:13 +09001447clean := -f $(srctree)/scripts/Makefile.clean obj
Masahiro Yamadaefcf8612014-02-04 17:24:40 +09001448
Masahiro Yamada9e414032014-02-04 17:24:24 +09001449endif # skip-makefile
1450
1451PHONY += FORCE
1452FORCE:
1453
1454# Declare the contents of the .PHONY variable as phony. We keep that
1455# information in a variable so we can use it in if_changed and friends.
1456.PHONY: $(PHONY)