2 # (C) Copyright 2000-2013
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 # SPDX-License-Identifier: GPL-2.0+
15 # To see a list of typical targets execute "make help"
16 # More info can be located in ./README
17 # Comments in this file are targeted only to the developer, do not
18 # expect to learn how to build the kernel reading this file.
21 # o use make's built-in rules and variables
22 # (this increases performance and avoids hard-to-debug behaviour);
23 # o print "Entering directory ...";
24 MAKEFLAGS += -rR --no-print-directory
26 # Avoid funny character set dependencies
30 export LC_COLLATE LC_NUMERIC
32 # We are using a recursive build, so we need to do a little thinking
33 # to get the ordering right.
35 # Most importantly: sub-Makefiles should only ever modify files in
36 # their own directory. If in some directory we have a dependency on
37 # a file in another dir (which doesn't happen often, but it's often
38 # unavoidable when linking the built-in.o targets which finally
39 # turn into vmlinux), we will call a sub make in that other dir, and
40 # after that we are sure that everything which is in that other dir
43 # The only cases where we need to modify files which have global
44 # effects are thus separated out and done before the recursive
45 # descending is started. They are now explicitly listed as the
48 # To put more focus on warnings, be less verbose as default
49 # Use 'make V=1' to see the full commands
51 ifeq ("$(origin V)", "command line")
58 # Call a source code checker (by default, "sparse") as part of the
61 # Use 'make C=1' to enable checking of only re-compiled files.
62 # Use 'make C=2' to enable checking of *all* source files, regardless
63 # of whether they are re-compiled or not.
65 # See the file "Documentation/sparse.txt" for more details, including
66 # where to get the "sparse" utility.
68 ifeq ("$(origin C)", "command line")
69 KBUILD_CHECKSRC = $(C)
71 ifndef KBUILD_CHECKSRC
75 # Use make M=dir to specify directory of external module to build
76 # Old syntax make ... SUBDIRS=$PWD is still supported
77 # Setting the environment variable KBUILD_EXTMOD take precedence
79 KBUILD_EXTMOD ?= $(SUBDIRS)
82 ifeq ("$(origin M)", "command line")
86 # kbuild supports saving output files in a separate directory.
87 # To locate output files in a separate directory two syntaxes are supported.
88 # In both cases the working directory must be the root of the kernel src.
90 # Use "make O=dir/to/store/output/files/"
92 # 2) Set KBUILD_OUTPUT
93 # Set the environment variable KBUILD_OUTPUT to point to the directory
94 # where the output files shall be placed.
95 # export KBUILD_OUTPUT=dir/to/store/output/files/
98 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
102 # KBUILD_SRC is set on invocation of make in OBJ directory
103 # KBUILD_SRC is not intended to be used by the regular user (for now)
104 ifeq ($(KBUILD_SRC),)
106 # OK, Make called in directory where kernel src resides
107 # Do we want to locate output files in a separate directory?
108 ifeq ("$(origin O)", "command line")
109 KBUILD_OUTPUT := $(O)
112 ifeq ("$(origin W)", "command line")
113 export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
116 # That's our default target when none is given on the command line
120 # Cancel implicit rules on top Makefile
121 $(CURDIR)/Makefile Makefile: ;
123 ifneq ($(KBUILD_OUTPUT),)
124 # Invoke a second make in the output directory, passing relevant variables
125 # check that the output directory actually exists
126 saved-output := $(KBUILD_OUTPUT)
127 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
128 $(if $(KBUILD_OUTPUT),, \
129 $(error output directory "$(saved-output)" does not exist))
131 PHONY += $(MAKECMDGOALS) sub-make
133 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
137 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
138 KBUILD_SRC=$(CURDIR) \
139 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
140 $(filter-out _all sub-make,$(MAKECMDGOALS))
142 # Leave processing to above invocation of make
144 endif # ifneq ($(KBUILD_OUTPUT),)
145 endif # ifeq ($(KBUILD_SRC),)
147 # We process the rest of the Makefile if this is the final invocation of make
148 ifeq ($(skip-makefile),)
150 # If building an external module we do not care about the all: rule
151 # but instead _all depend on modules
153 ifeq ($(KBUILD_EXTMOD),)
159 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
164 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
166 export srctree objtree VPATH
168 OBJTREE := $(objtree)
169 SPLTREE := $(OBJTREE)/spl
170 TPLTREE := $(OBJTREE)/tpl
171 SRCTREE := $(srctree)
172 export SRCTREE OBJTREE SPLTREE TPLTREE
174 MKCONFIG := $(SRCTREE)/mkconfig
177 # Make sure CDPATH settings don't interfere
180 #########################################################################
182 HOSTARCH := $(shell uname -m | \
184 -e s/sun4u/sparc64/ \
187 -e s/ppc64/powerpc/ \
189 -e s/macppc/powerpc/\
192 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
193 sed -e 's/\(cygwin\).*/cygwin/')
195 export HOSTARCH HOSTOS
197 # Deal with colliding definitions from tcsh etc.
200 #########################################################################
202 # set default to nothing for native builds
203 ifeq ($(HOSTARCH),$(ARCH))
207 # SHELL used by kbuild
208 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
209 else if [ -x /bin/bash ]; then echo /bin/bash; \
210 else echo sh; fi ; fi)
213 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
215 ifeq ($(HOSTOS),cygwin)
219 # Mac OS X / Darwin's C preprocessor is Apple specific. It
220 # generates numerous errors and warnings. We want to bypass it
221 # and use GNU C's cpp. To do this we pass the -traditional-cpp
222 # option to the compiler. Note that the -traditional-cpp flag
223 # DOES NOT have the same semantics as GNU C's flag, all it does
224 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
226 # Apple's linker is similar, thanks to the new 2 stage linking
227 # multiple symbol definitions are treated as errors, hence the
228 # -multiply_defined suppress option to turn off this error.
230 ifeq ($(HOSTOS),darwin)
231 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
232 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
233 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
235 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
236 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
238 # Snow Leopards build environment has no longer restrictions as described above
239 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
240 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
241 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
244 # Decide whether to build built-in, modular, or both.
245 # Normally, just do built-in.
250 # If we have only "make modules", don't compile built-in objects.
251 # When we're building modules with modversions, we need to consider
252 # the built-in objects during the descend as well, in order to
253 # make sure the checksums are up to date before we record them.
255 ifeq ($(MAKECMDGOALS),modules)
256 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
259 # If we have "make <whatever> modules", compile modules
260 # in addition to whatever we do anyway.
261 # Just "make" or "make all" shall build modules as well
263 # U-Boot does not need modules
264 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
265 # KBUILD_MODULES := 1
268 #ifeq ($(MAKECMDGOALS),)
269 # KBUILD_MODULES := 1
272 export KBUILD_MODULES KBUILD_BUILTIN
273 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
276 # ---------------------------------------------------------------------------
278 # Normally, we echo the whole command before executing it. By making
279 # that echo $($(quiet)$(cmd)), we now have the possibility to set
280 # $(quiet) to choose other forms of output instead, e.g.
282 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
283 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
285 # If $(quiet) is empty, the whole command will be printed.
286 # If it is set to "quiet_", only the short version will be printed.
287 # If it is set to "silent_", nothing will be printed at all, since
288 # the variable $(silent_cmd_cc_o_c) doesn't exist.
290 # A simple variant is to prefix commands with $(Q) - that's useful
291 # for commands that shall be hidden in non-verbose mode.
295 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
296 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
298 ifeq ($(KBUILD_VERBOSE),1)
306 # If the user is running make -s (silent mode), suppress echoing of
309 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
313 export quiet Q KBUILD_VERBOSE
316 # Look for make include files relative to root of kernel src
317 MAKEFLAGS += --include-dir=$(srctree)
319 # We need some generic definitions (do not try to remake the file).
320 $(srctree)/scripts/Kbuild.include: ;
321 include $(srctree)/scripts/Kbuild.include
323 # Make variables (CC, etc...)
325 AS = $(CROSS_COMPILE)as
327 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
328 LD = $(CROSS_COMPILE)ld.bfd
330 LD = $(CROSS_COMPILE)ld
332 CC = $(CROSS_COMPILE)gcc
334 AR = $(CROSS_COMPILE)ar
335 NM = $(CROSS_COMPILE)nm
336 LDR = $(CROSS_COMPILE)ldr
337 STRIP = $(CROSS_COMPILE)strip
338 OBJCOPY = $(CROSS_COMPILE)objcopy
339 OBJDUMP = $(CROSS_COMPILE)objdump
341 RANLIB = $(CROSS_COMPILE)RANLIB
345 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
346 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
348 KBUILD_CPPFLAGS := -D__KERNEL__
350 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
351 -Wno-format-security \
352 -fno-builtin -ffreestanding
353 KBUILD_AFLAGS := -D__ASSEMBLY__
355 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
356 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
357 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
359 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
360 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
361 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
362 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
364 export DTC CHECK CHECKFLAGS
366 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
367 export KBUILD_CFLAGS KBUILD_AFLAGS
369 # When compiling out-of-tree modules, put MODVERDIR in the module
370 # tree rather than in the kernel tree. The kernel tree might
372 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
374 # Files to ignore in find ... statements
376 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \
377 -o -name .pc -o -name .hg -o -name .git \) -prune -o
378 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
379 --exclude CVS --exclude .pc --exclude .hg --exclude .git
381 # ===========================================================================
382 # Rules shared between *config targets and build targets
384 # Basic helpers built in scripts/
385 PHONY += scripts_basic
387 $(Q)$(MAKE) $(build)=scripts/basic
388 $(Q)rm -f .tmp_quiet_recordmcount
390 # To avoid any implicit rule to kick in, define an empty command.
391 scripts/basic/%: scripts_basic ;
393 PHONY += outputmakefile
394 # outputmakefile generates a Makefile in the output directory, if using a
395 # separate output directory. This allows convenient use of make in the
398 ifneq ($(KBUILD_SRC),)
399 $(Q)ln -fsn $(srctree) source
400 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
401 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
404 # To make sure we do not include .config for any of the *config targets
405 # catch them early, and hand them over to scripts/kconfig/Makefile
406 # It is allowed to specify more targets when calling make, including
407 # mixing *config targets and build targets.
408 # For example 'make oldconfig all'.
409 # Detect when mixed targets is specified, and make a second invocation
410 # of make so .config is not included in this case either (for *config).
412 version_h := include/generated/version_autogenerated.h
413 timestamp_h := include/generated/timestamp_autogenerated.h
415 no-dot-config-targets := clean clobber mrproper distclean \
416 help %docs check% coccicheck \
423 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
424 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
429 ifeq ($(KBUILD_EXTMOD),)
430 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
432 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
438 ifeq ($(mixed-targets),1)
439 # ===========================================================================
440 # We're called with mixed targets (*config and build targets).
441 # Handle them one by one.
443 PHONY += $(MAKECMDGOALS) build-one-by-one
445 $(MAKECMDGOALS): build-one-by-one
450 for i in $(MAKECMDGOALS); do \
451 $(MAKE) -f $(srctree)/Makefile $$i; \
455 ifeq ($(config-targets),1)
456 # ===========================================================================
457 # *config targets only - make sure prerequisites are updated, and descend
458 # in scripts/kconfig to make the *config target
460 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
461 # KBUILD_DEFCONFIG may point out an alternative default configuration
462 # used for 'make defconfig'
464 %_config:: outputmakefile
465 @$(MKCONFIG) -A $(@:_config=)
468 # ===========================================================================
469 # Build targets only - this includes vmlinux, arch specific targets, clean
470 # targets and others. In general all targets except *config targets.
472 # load ARCH, BOARD, and CPU configuration
473 -include include/config.mk
475 ifeq ($(dot-config),1)
477 -include include/autoconf.mk
478 -include include/autoconf.mk.dep
480 # load other configuration
481 include $(srctree)/config.mk
483 ifeq ($(wildcard include/config.mk),)
484 $(error "System not configured - see README")
487 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
488 # that (or fail if absent). Otherwise, search for a linker script in a
492 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
493 ifdef CONFIG_SYS_LDSCRIPT
494 # need to strip off double quotes
495 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
499 # If there is no specified link script, we look in a number of places for it
501 ifeq ($(CONFIG_NAND_U_BOOT),y)
502 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-nand.lds
503 ifeq ($(wildcard $(LDSCRIPT)),)
504 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-nand.lds
507 ifeq ($(wildcard $(LDSCRIPT)),)
508 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
510 ifeq ($(wildcard $(LDSCRIPT)),)
511 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
513 ifeq ($(wildcard $(LDSCRIPT)),)
514 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
521 endif # $(dot-config)
523 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
526 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
529 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
532 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
533 # option to the assembler.
536 # Report stack usage if supported
537 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
538 KBUILD_CFLAGS += -fstack-usage
541 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
543 # turn jbsr into jsr for m68k
545 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
546 KBUILD_AFLAGS += -Wa,-gstabs,-S
550 ifneq ($(CONFIG_SYS_TEXT_BASE),)
551 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
554 export CONFIG_SYS_TEXT_BASE
556 # Use UBOOTINCLUDE when you must reference the include/ directory.
557 # Needed to be compatible with the O= option
560 $(if $(KBUILD_SRC), -I$(srctree)/include) \
561 -I$(srctree)/arch/$(ARCH)/include
563 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
564 CHECKFLAGS += $(NOSTDINC_FLAGS)
567 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
569 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
571 #########################################################################
572 # U-Boot objects....order is important (i.e. start must be first)
574 head-y := $(CPUDIR)/start.o
575 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
576 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
578 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
581 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
584 libs-y += $(CPUDIR)/$(SOC)/
586 libs-$(CONFIG_OF_EMBED) += dts/
587 libs-y += arch/$(ARCH)/lib/
592 libs-$(CONFIG_DM) += drivers/core/
593 libs-y += drivers/dma/
594 libs-y += drivers/gpio/
595 libs-y += drivers/i2c/
596 libs-y += drivers/input/
597 libs-y += drivers/mmc/
598 libs-y += drivers/mtd/
599 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
600 libs-y += drivers/mtd/onenand/
601 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
602 libs-y += drivers/mtd/spi/
603 libs-y += drivers/net/
604 libs-y += drivers/net/phy/
605 libs-y += drivers/pci/
606 libs-y += drivers/power/ \
607 drivers/power/fuel_gauge/ \
609 drivers/power/pmic/ \
610 drivers/power/battery/
611 libs-y += drivers/spi/
612 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
613 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
614 libs-y += drivers/serial/
615 libs-y += drivers/usb/eth/
616 libs-y += drivers/usb/gadget/
617 libs-y += drivers/usb/host/
618 libs-y += drivers/usb/musb/
619 libs-y += drivers/usb/musb-new/
620 libs-y += drivers/usb/phy/
621 libs-y += drivers/usb/ulpi/
623 libs-y += lib/libfdt/
624 libs-$(CONFIG_API) += api/
625 libs-$(CONFIG_HAS_POST) += post/
628 libs-$(CONFIG_DM_DEMO) += drivers/demo/
630 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
631 libs-y += arch/$(ARCH)/imx-common/
634 libs-$(CONFIG_ARM) += arch/arm/cpu/
635 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
637 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
639 libs-y := $(sort $(libs-y))
641 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
643 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
645 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
647 u-boot-init := $(head-y)
648 u-boot-main := $(libs-y)
652 ifdef CONFIG_USE_PRIVATE_LIBGCC
653 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
654 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
656 PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
659 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
661 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
664 # Special flags for CPP when processing the linker script.
665 # Pass the version down so we can handle backwards compatibility
668 -include $(srctree)/include/u-boot/u-boot.lds.h \
670 $(shell $(LD) --version | \
671 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
673 #########################################################################
674 #########################################################################
676 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
678 @actual=`wc -c $@ | awk '{print $$1}'`; \
679 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
680 if test $$actual -gt $$limit; then \
681 echo "$@ exceeds file size limit:" >&2 ; \
682 echo " limit: $$limit bytes" >&2 ; \
683 echo " actual: $$actual bytes" >&2 ; \
684 echo " excess: $$((actual - limit)) bytes" >&2; \
691 # Statically apply RELA-style relocations (currently arm64 only)
692 ifneq ($(CONFIG_STATIC_RELA),)
693 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
695 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
696 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
697 tools/relocate-rela $(2) $(3) $$start $$end
702 # Always append ALL so that arch config.mk's can add custom ones
703 ALL-y += u-boot.srec u-boot.bin System.map
705 ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
706 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
707 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
708 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
709 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
710 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
711 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
712 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
713 ifneq ($(CONFIG_SPL_TARGET),)
714 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
716 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
718 # enable combined SPL/u-boot/dtb rules for tegra
719 ifneq ($(CONFIG_TEGRA),)
720 ifeq ($(CONFIG_SPL),y)
721 ifeq ($(CONFIG_OF_SEPARATE),y)
722 ALL-y += u-boot-dtb-tegra.bin
724 ALL-y += u-boot-nodtb-tegra.bin
729 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
730 ifneq ($(CONFIG_SYS_TEXT_BASE),)
731 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
734 quiet_cmd_objcopy = OBJCOPY $@
735 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
737 quiet_cmd_mkimage = UIMAGE $@
738 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
739 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
741 quiet_cmd_cat = CAT $@
742 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
744 append = cat $(filter-out $< $(PHONY), $^) >> $@
746 quiet_cmd_pad_cat = CAT $@
747 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
752 dtbs dts/dt.dtb: checkdtc u-boot
753 $(Q)$(MAKE) $(build)=dts dtbs
755 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
756 $(call if_changed,cat)
758 quiet_cmd_copy = COPY $@
761 u-boot.dtb: dts/dt.dtb
764 OBJCOPYFLAGS_u-boot.hex := -O ihex
766 OBJCOPYFLAGS_u-boot.srec := -O srec
768 u-boot.hex u-boot.srec: u-boot FORCE
769 $(call if_changed,objcopy)
771 OBJCOPYFLAGS_u-boot.bin := -O binary
773 u-boot.bin: u-boot FORCE
774 $(call if_changed,objcopy)
775 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
780 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
783 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
785 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
787 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
788 $(call if_changed,objcopy)
791 # U-Boot entry point, needed for booting of full-blown U-Boot
792 # from the SPL U-Boot version.
794 ifndef CONFIG_SYS_UBOOT_START
795 CONFIG_SYS_UBOOT_START := 0
798 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
799 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
800 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
802 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
803 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
805 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
806 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
808 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
809 $(call if_changed,mkimage)
811 u-boot.imx: u-boot.bin
812 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
814 u-boot.sha1: u-boot.bin
815 tools/ubsha1 u-boot.bin
818 $(OBJDUMP) -d $< > $@
821 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
823 SPL_PAYLOAD := u-boot.bin
826 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
827 --pad-to=$(CONFIG_SPL_PAD_TO)
828 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
829 $(call if_changed,pad_cat)
831 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
832 --pad-to=$(CONFIG_TPL_PAD_TO)
833 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
834 $(call if_changed,pad_cat)
836 SPL: spl/u-boot-spl.bin FORCE
837 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
839 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
840 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
842 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
844 u-boot.ubl: u-boot-with-spl.bin FORCE
845 $(call if_changed,mkimage)
847 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
848 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
849 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
850 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
851 $(call if_changed,mkimage)
853 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_MAX_SIZE)
854 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
855 $(call if_changed,pad_cat)
857 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
858 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
860 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
861 # Both images are created using mkimage (crc etc), so that the ROM
862 # bootloader can check its integrity. Padding needs to be done to the
863 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
864 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
865 # The resulting image containing both U-Boot images is called u-boot.spr
866 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
867 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
868 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
869 $(call if_changed,mkimage)
871 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
873 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
874 $(call if_changed,pad_cat)
876 ifneq ($(CONFIG_TEGRA),)
877 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
878 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
879 $(call if_changed,pad_cat)
881 ifeq ($(CONFIG_OF_SEPARATE),y)
882 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
883 $(call if_changed,cat)
887 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
888 $(call if_changed,cat)
890 # PPC4xx needs the SPL at the end of the image, since the reset vector
891 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
892 # and need to introduce a new build target with the full blown U-Boot
893 # at the start padded up to the start of the SPL image. And then concat
894 # the SPL image to the end.
896 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
897 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
898 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
899 $(call if_changed,pad_cat)
901 # Create a new ELF from a raw binary file. This is useful for arm64
902 # where static relocation needs to be performed on the raw binary,
903 # but certain simulators only accept an ELF file (but don't do the
905 # FIXME refactor dts/Makefile to share target/arch detection
906 u-boot.elf: u-boot.bin
907 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
909 @$(LD) u-boot-elf.o -o $@ \
910 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
911 -Ttext=$(CONFIG_SYS_TEXT_BASE)
913 # Rule to link u-boot
914 # May be overridden by arch/$(ARCH)/config.mk
915 quiet_cmd_u-boot__ ?= LD $@
916 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
917 -T u-boot.lds $(u-boot-init) \
918 --start-group $(u-boot-main) --end-group \
919 $(PLATFORM_LIBS) -Map u-boot.map
921 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
922 $(call if_changed,u-boot__)
923 ifeq ($(CONFIG_KALLSYMS),y)
924 smap=`$(call SYSTEM_MAP,u-boot) | \
925 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
926 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
927 -c $(srctree)/common/system_map.c -o common/system_map.o
928 $(call cmd,u-boot__) common/system_map.o
931 # The actual objects are generated when descending,
932 # make sure no implicit rule kicks in
933 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
935 # Handle descending into subdirectories listed in $(vmlinux-dirs)
936 # Preset locale variables to speed up the build process. Limit locale
937 # tweaks to this spot to avoid wrong language settings when running
938 # make menuconfig etc.
939 # Error messages still appears in the original language
941 PHONY += $(u-boot-dirs)
942 $(u-boot-dirs): prepare scripts
943 $(Q)$(MAKE) $(build)=$@
946 # The "tools" are needed early
947 $(filter-out tools, $(u-boot-dirs)): tools
948 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
949 # is "yes"), so compile examples after U-Boot is compiled.
950 examples: $(filter-out examples, $(u-boot-dirs))
952 define filechk_uboot.release
953 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
956 # Store (new) UBOOTRELEASE string in include/config/uboot.release
957 include/config/uboot.release: Makefile FORCE
958 $(call filechk,uboot.release)
961 # Things we need to do before we recursively start building the kernel
962 # or the modules are listed in "prepare".
963 # A multi level approach is used. prepareN is processed before prepareN-1.
964 # archprepare is used in arch Makefiles and when processed asm symlink,
965 # version.h and scripts_basic is processed / created.
967 # Listed in dependency order
968 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
970 # prepare3 is used to check if we are building in a separate output directory,
972 # 1) Check that make has not been executed in the kernel src $(srctree)
973 prepare3: include/config/uboot.release
974 ifneq ($(KBUILD_SRC),)
975 @$(kecho) ' Using $(srctree) as source for u-boot'
976 $(Q)if [ -f $(srctree)/include/config.mk ]; then \
977 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
978 echo >&2 " in the '$(srctree)' directory.";\
983 # prepare2 creates a makefile if using a separate output directory
984 prepare2: prepare3 outputmakefile
986 prepare1: prepare2 $(version_h) $(timestamp_h)
987 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
988 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
989 @echo >&2 " Your architecture does not support generic board."
990 @echo >&2 " Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
994 ifeq ($(wildcard $(LDSCRIPT)),)
995 @echo >&2 " Could not find linker script."
999 archprepare: prepare1 scripts_basic
1001 prepare0: archprepare FORCE
1002 $(Q)$(MAKE) $(build)=.
1004 # All the preparing..
1007 # Generate some files
1008 # ---------------------------------------------------------------------------
1010 define filechk_version.h
1011 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1012 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1013 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1014 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1017 define filechk_timestamp.h
1018 (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1019 LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1022 $(version_h): include/config/uboot.release FORCE
1023 $(call filechk,version.h)
1025 $(timestamp_h): $(srctree)/Makefile FORCE
1026 $(call filechk,timestamp.h)
1029 # Auto-generate the autoconf.mk file (which is included by all makefiles)
1031 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
1032 # the dep file is only include in this top level makefile to determine when
1033 # to regenerate the autoconf.mk file.
1035 quiet_cmd_autoconf_dep = GEN $@
1036 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
1037 -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
1039 include/autoconf.mk.dep: include/config.h include/common.h
1040 $(call cmd,autoconf_dep)
1042 quiet_cmd_autoconf = GEN $@
1044 $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
1045 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
1048 include/autoconf.mk: include/config.h
1049 $(call cmd,autoconf)
1051 # ---------------------------------------------------------------------------
1055 @echo '*** Warning: make $@ is unnecessary now.'
1057 # ---------------------------------------------------------------------------
1058 quiet_cmd_cpp_lds = LDS $@
1059 cmd_cpp_lds = $(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ \
1060 -x assembler-with-cpp -P -o $@ $<
1062 u-boot.lds: $(LDSCRIPT) prepare FORCE
1063 $(call if_changed,cpp_lds)
1067 $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
1069 @echo >&2 "==================== WARNING ====================="
1070 @echo >&2 "nand_spl will not be included in v2014.07 release."
1071 @echo >&2 "Please switch over to SPL."
1072 @echo >&2 "Otherwise, this board will be removed."
1073 @echo >&2 "=================================================="
1076 nand_spl/u-boot-spl-16k.bin: nand_spl
1079 u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE
1080 $(call if_changed,cat)
1082 spl/u-boot-spl.bin: spl/u-boot-spl
1084 spl/u-boot-spl: tools prepare
1085 $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
1087 tpl/u-boot-tpl.bin: tools prepare
1088 $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
1090 TAG_SUBDIRS := $(u-boot-dirs) include
1096 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1097 -name '*.[chS]' -print`
1100 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1101 -name '*.[chS]' -print`
1103 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1109 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1112 @$(call SYSTEM_MAP,$<) > $@
1115 @if test $(call dtc-version) -lt 0104; then \
1116 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1120 #########################################################################
1122 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1123 # R_AARCH64_RELATIVE (64-bit).
1124 checkarmreloc: u-boot
1125 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1126 grep R_A | sort -u`"; \
1127 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1128 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1129 echo "$< contains unexpected relocations: $$RELOC"; \
1134 $(Q)$(MAKE) $(build)=tools/$@
1136 tools-all: export HOST_TOOLS_ALL=y
1137 tools-all: env tools ;
1139 cross_tools: export CROSS_BUILD_TOOLS=y
1140 cross_tools: tools ;
1144 git log --no-merges U-Boot-1_1_5.. | \
1145 unexpand -a | sed -e 's/\s\s*$$//' > $@
1147 include/license.h: tools/bin2header COPYING
1148 cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1149 #########################################################################
1152 # Cleaning is done on three levels.
1153 # make clean Delete most generated files
1154 # Leave enough to build external modules
1155 # make mrproper Delete the current configuration, and all generated files
1156 # make distclean Remove editor backup files, patch leftover files and the like
1158 # Directories & files removed with 'make clean'
1159 CLEAN_DIRS += $(MODVERDIR)
1160 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
1161 include/autoconf.mk* include/spl-autoconf.mk \
1162 include/tpl-autoconf.mk
1164 # Directories & files removed with 'make clobber'
1165 CLOBBER_DIRS += $(patsubst %,spl/%, $(filter-out Makefile, \
1166 $(shell ls -1 spl 2>/dev/null))) \
1168 CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
1170 # Directories & files removed with 'make mrproper'
1171 MRPROPER_DIRS += include/config include/generated
1172 MRPROPER_FILES += .config .config.old \
1173 tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1174 include/config.h include/config.mk
1176 # clean - Delete most, but leave enough to build external modules
1178 clean: rm-dirs := $(CLEAN_DIRS)
1179 clean: rm-files := $(CLEAN_FILES)
1181 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $f/Makefile),$f))
1183 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1185 PHONY += $(clean-dirs) clean archclean
1187 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1189 # TODO: Do not use *.cfgtmp
1190 clean: $(clean-dirs)
1193 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1194 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1195 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1196 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1197 -o -name '*.symtypes' -o -name 'modules.order' \
1198 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1199 -o -name '*.gcno' \) -type f -print | xargs rm -f
1200 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1201 -path './nand_spl/*' -type l -print | xargs rm -f
1205 clobber: rm-dirs := $(CLOBBER_DIRS)
1206 clobber: rm-files := $(CLOBBER_FILES)
1214 # mrproper - Delete all generated files, including .config
1216 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1217 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1218 mrproper-dirs := $(addprefix _mrproper_,scripts)
1220 PHONY += $(mrproper-dirs) mrproper archmrproper
1222 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1224 mrproper: clobber $(mrproper-dirs)
1227 @rm -f arch/*/include/asm/arch arch/*/include/asm/proc
1234 @find $(srctree) $(RCS_FIND_IGNORE) \
1235 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1236 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1238 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1239 -type f -print | xargs rm -f
1242 F=`basename $(srctree)` ; cd .. ; \
1243 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1246 @echo 'Cleaning targets:'
1247 @echo ' clean - Remove most generated files but keep the config and'
1248 @echo ' necessities for testing u-boot'
1249 @echo ' clobber - Remove most generated files but keep the config'
1250 @echo ' mrproper - Remove all generated files + config + various backup files'
1251 @echo ' distclean - mrproper + remove editor backup and patch files'
1253 # uncomment after adding Kconfig feature
1254 # @echo 'Configuration targets:'
1255 # @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1257 @echo 'Other generic targets:'
1258 @echo ' all - Build all necessary images depending on configuration'
1259 @echo ' u-boot - Build the bare u-boot'
1260 @echo ' dir/ - Build all files in dir and below'
1261 @echo ' dir/file.[oisS] - Build specified target only'
1262 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1263 @echo ' (requires a recent binutils and recent build (System.map))'
1264 @echo ' tags/TAGS - Generate tags file for editors'
1265 @echo ' cscope - Generate cscope index'
1266 @echo ' ubootrelease - Output the release version string'
1267 @echo ' ubootversion - Output the version stored in Makefile'
1269 @echo 'Static analysers'
1270 @echo ' checkstack - Generate a list of stack hogs'
1272 @echo 'Documentation targets:'
1273 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1275 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1276 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1277 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1278 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1279 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1280 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1281 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1282 @echo ' 1: warnings which may be relevant and do not occur too often'
1283 @echo ' 2: warnings which occur quite often but may still be relevant'
1284 @echo ' 3: more obscure warnings, can most likely be ignored'
1285 @echo ' Multiple levels can be combined with W=12 or W=123'
1287 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1288 @echo 'For further info see the ./README file'
1291 # Documentation targets
1292 # ---------------------------------------------------------------------------
1293 %docs: scripts_basic FORCE
1294 $(Q)$(MAKE) $(build)=scripts build_docproc
1295 $(Q)$(MAKE) $(build)=doc/DocBook $@
1298 PHONY += prepare scripts
1302 endif #ifeq ($(config-targets),1)
1303 endif #ifeq ($(mixed-targets),1)
1305 PHONY += checkstack ubootrelease ubootversion
1308 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1309 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1312 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1315 @echo $(UBOOTVERSION)
1318 # ---------------------------------------------------------------------------
1319 # Single targets are compatible with:
1320 # - build with mixed source and output
1321 # - build with separate output dir 'make O=...'
1322 # - external modules
1324 # target-dir => where to store outputfile
1325 # build-dir => directory in kernel source tree to use
1327 ifeq ($(KBUILD_EXTMOD),)
1328 build-dir = $(patsubst %/,%,$(dir $@))
1329 target-dir = $(dir $@)
1331 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1332 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1333 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1336 %.s: %.c prepare scripts FORCE
1337 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1338 %.i: %.c prepare scripts FORCE
1339 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1340 %.o: %.c prepare scripts FORCE
1341 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1342 %.lst: %.c prepare scripts FORCE
1343 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1344 %.s: %.S prepare scripts FORCE
1345 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1346 %.o: %.S prepare scripts FORCE
1347 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1348 %.symtypes: %.c prepare scripts FORCE
1349 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1352 /: prepare scripts FORCE
1354 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1355 $(build)=$(build-dir)
1356 %/: prepare scripts FORCE
1358 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1359 $(build)=$(build-dir)
1360 %.ko: prepare scripts FORCE
1362 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1363 $(build)=$(build-dir) $(@:.ko=.o)
1364 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1366 # FIXME Should go into a make.lib or something
1367 # ===========================================================================
1369 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1370 cmd_rmdirs = rm -rf $(rm-dirs)
1372 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1373 cmd_rmfiles = rm -f $(rm-files)
1375 # read all saved command lines
1377 targets := $(wildcard $(sort $(targets)))
1378 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1380 ifneq ($(cmd_files),)
1381 $(cmd_files): ; # Do not try to update included dependency files
1382 include $(cmd_files)
1385 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1387 # $(Q)$(MAKE) $(clean)=dir
1388 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1390 endif # skip-makefile
1395 # Declare the contents of the .PHONY variable as phony. We keep that
1396 # information in a variable so we can use it in if_changed and friends.