# # (C) Copyright 2000-2013 # Wolfgang Denk, DENX Software Engineering, wd@denx.de. # # SPDX-License-Identifier: GPL-2.0+ # VERSION = 2014 PATCHLEVEL = 04 SUBLEVEL = EXTRAVERSION = -rc2 NAME = # *DOCUMENTATION* # To see a list of typical targets execute "make help" # More info can be located in ./README # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. # Do not: # o use make's built-in rules and variables # (this increases performance and avoids hard-to-debug behaviour); # o print "Entering directory ..."; MAKEFLAGS += -rR --no-print-directory # Avoid funny character set dependencies unexport LC_ALL LC_COLLATE=C LC_NUMERIC=C export LC_COLLATE LC_NUMERIC # We are using a recursive build, so we need to do a little thinking # to get the ordering right. # # Most importantly: sub-Makefiles should only ever modify files in # their own directory. If in some directory we have a dependency on # a file in another dir (which doesn't happen often, but it's often # unavoidable when linking the built-in.o targets which finally # turn into vmlinux), we will call a sub make in that other dir, and # after that we are sure that everything which is in that other dir # is now up to date. # # The only cases where we need to modify files which have global # effects are thus separated out and done before the recursive # descending is started. They are now explicitly listed as the # prepare rule. # To put more focus on warnings, be less verbose as default # Use 'make V=1' to see the full commands ifeq ("$(origin V)", "command line") KBUILD_VERBOSE = $(V) endif ifndef KBUILD_VERBOSE KBUILD_VERBOSE = 0 endif # Call a source code checker (by default, "sparse") as part of the # C compilation. # # Use 'make C=1' to enable checking of only re-compiled files. # Use 'make C=2' to enable checking of *all* source files, regardless # of whether they are re-compiled or not. # # See the file "Documentation/sparse.txt" for more details, including # where to get the "sparse" utility. ifeq ("$(origin C)", "command line") KBUILD_CHECKSRC = $(C) endif ifndef KBUILD_CHECKSRC KBUILD_CHECKSRC = 0 endif # Use make M=dir to specify directory of external module to build # Old syntax make ... SUBDIRS=$PWD is still supported # Setting the environment variable KBUILD_EXTMOD take precedence ifdef SUBDIRS KBUILD_EXTMOD ?= $(SUBDIRS) endif ifeq ("$(origin M)", "command line") KBUILD_EXTMOD := $(M) endif # kbuild supports saving output files in a separate directory. # To locate output files in a separate directory two syntaxes are supported. # In both cases the working directory must be the root of the kernel src. # 1) O= # Use "make O=dir/to/store/output/files/" # # 2) Set KBUILD_OUTPUT # Set the environment variable KBUILD_OUTPUT to point to the directory # where the output files shall be placed. # export KBUILD_OUTPUT=dir/to/store/output/files/ # make # # The O= assignment takes precedence over the KBUILD_OUTPUT environment # variable. # KBUILD_SRC is set on invocation of make in OBJ directory # KBUILD_SRC is not intended to be used by the regular user (for now) ifeq ($(KBUILD_SRC),) # OK, Make called in directory where kernel src resides # Do we want to locate output files in a separate directory? ifeq ("$(origin O)", "command line") KBUILD_OUTPUT := $(O) endif ifeq ("$(origin W)", "command line") export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) endif # That's our default target when none is given on the command line PHONY := _all _all: # Cancel implicit rules on top Makefile $(CURDIR)/Makefile Makefile: ; ifneq ($(KBUILD_OUTPUT),) # Invoke a second make in the output directory, passing relevant variables # check that the output directory actually exists saved-output := $(KBUILD_OUTPUT) KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) $(if $(KBUILD_OUTPUT),, \ $(error output directory "$(saved-output)" does not exist)) PHONY += $(MAKECMDGOALS) sub-make $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make @: sub-make: FORCE $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ KBUILD_SRC=$(CURDIR) \ KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ $(filter-out _all sub-make,$(MAKECMDGOALS)) # Leave processing to above invocation of make skip-makefile := 1 endif # ifneq ($(KBUILD_OUTPUT),) endif # ifeq ($(KBUILD_SRC),) # We process the rest of the Makefile if this is the final invocation of make ifeq ($(skip-makefile),) # If building an external module we do not care about the all: rule # but instead _all depend on modules PHONY += all ifeq ($(KBUILD_EXTMOD),) _all: all else _all: modules endif srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) objtree := $(CURDIR) src := $(srctree) obj := $(objtree) VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) export srctree objtree VPATH OBJTREE := $(objtree) SPLTREE := $(OBJTREE)/spl TPLTREE := $(OBJTREE)/tpl SRCTREE := $(srctree) TOPDIR := $(SRCTREE) export TOPDIR SRCTREE OBJTREE SPLTREE TPLTREE MKCONFIG := $(SRCTREE)/mkconfig export MKCONFIG # Make sure CDPATH settings don't interfere unexport CDPATH ######################################################################### HOSTARCH := $(shell uname -m | \ sed -e s/i.86/x86/ \ -e s/sun4u/sparc64/ \ -e s/arm.*/arm/ \ -e s/sa110/arm/ \ -e s/ppc64/powerpc/ \ -e s/ppc/powerpc/ \ -e s/macppc/powerpc/\ -e s/sh.*/sh/) HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \ sed -e 's/\(cygwin\).*/cygwin/') export HOSTARCH HOSTOS # Deal with colliding definitions from tcsh etc. VENDOR= ######################################################################### # set default to nothing for native builds ifeq ($(HOSTARCH),$(ARCH)) CROSS_COMPILE ?= endif # SHELL used by kbuild CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ else if [ -x /bin/bash ]; then echo /bin/bash; \ else echo sh; fi ; fi) HOSTCC = gcc HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer ifeq ($(HOSTOS),cygwin) HOSTCFLAGS += -ansi endif # Mac OS X / Darwin's C preprocessor is Apple specific. It # generates numerous errors and warnings. We want to bypass it # and use GNU C's cpp. To do this we pass the -traditional-cpp # option to the compiler. Note that the -traditional-cpp flag # DOES NOT have the same semantics as GNU C's flag, all it does # is invoke the GNU preprocessor in stock ANSI/ISO C fashion. # # Apple's linker is similar, thanks to the new 2 stage linking # multiple symbol definitions are treated as errors, hence the # -multiply_defined suppress option to turn off this error. # ifeq ($(HOSTOS),darwin) # get major and minor product version (e.g. '10' and '6' for Snow Leopard) DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.') DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.') os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \ $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) # Snow Leopards build environment has no longer restrictions as described above HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress") endif # Decide whether to build built-in, modular, or both. # Normally, just do built-in. KBUILD_MODULES := KBUILD_BUILTIN := 1 # If we have only "make modules", don't compile built-in objects. # When we're building modules with modversions, we need to consider # the built-in objects during the descend as well, in order to # make sure the checksums are up to date before we record them. ifeq ($(MAKECMDGOALS),modules) KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) endif # If we have "make <whatever> modules", compile modules # in addition to whatever we do anyway. # Just "make" or "make all" shall build modules as well # U-Boot does not need modules #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) # KBUILD_MODULES := 1 #endif #ifeq ($(MAKECMDGOALS),) # KBUILD_MODULES := 1 #endif export KBUILD_MODULES KBUILD_BUILTIN export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD # Beautify output # --------------------------------------------------------------------------- # # Normally, we echo the whole command before executing it. By making # that echo $($(quiet)$(cmd)), we now have the possibility to set # $(quiet) to choose other forms of output instead, e.g. # # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< # # If $(quiet) is empty, the whole command will be printed. # If it is set to "quiet_", only the short version will be printed. # If it is set to "silent_", nothing will be printed at all, since # the variable $(silent_cmd_cc_o_c) doesn't exist. # # A simple variant is to prefix commands with $(Q) - that's useful # for commands that shall be hidden in non-verbose mode. # # $(Q)ln $@ :< # # If KBUILD_VERBOSE equals 0 then the above command will be hidden. # If KBUILD_VERBOSE equals 1 then the above command is displayed. ifeq ($(KBUILD_VERBOSE),1) quiet = Q = else quiet=quiet_ Q = @ endif # If the user is running make -s (silent mode), suppress echoing of # commands ifneq ($(filter s% -s%,$(MAKEFLAGS)),) quiet=silent_ endif export quiet Q KBUILD_VERBOSE # Look for make include files relative to root of kernel src MAKEFLAGS += --include-dir=$(srctree) # We need some generic definitions (do not try to remake the file). $(srctree)/scripts/Kbuild.include: ; include $(srctree)/scripts/Kbuild.include # Make variables (CC, etc...) AS = $(CROSS_COMPILE)as # Always use GNU ld ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),) LD = $(CROSS_COMPILE)ld.bfd else LD = $(CROSS_COMPILE)ld endif CC = $(CROSS_COMPILE)gcc CPP = $(CC) -E AR = $(CROSS_COMPILE)ar NM = $(CROSS_COMPILE)nm LDR = $(CROSS_COMPILE)ldr STRIP = $(CROSS_COMPILE)strip OBJCOPY = $(CROSS_COMPILE)objcopy OBJDUMP = $(CROSS_COMPILE)objdump AWK = awk RANLIB = $(CROSS_COMPILE)RANLIB DTC = dtc CHECK = sparse CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) KBUILD_CPPFLAGS := -D__KERNEL__ KBUILD_CFLAGS := -Wall -Wstrict-prototypes \ -Wno-format-security \ -fno-builtin -ffreestanding KBUILD_AFLAGS := -D__ASSEMBLY__ # Read UBOOTRELEASE from include/config/uboot.release (if it exists) UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null) UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC export CPP AR NM LDR STRIP OBJCOPY OBJDUMP export MAKE AWK export DTC CHECK CHECKFLAGS export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS export KBUILD_CFLAGS KBUILD_AFLAGS # When compiling out-of-tree modules, put MODVERDIR in the module # tree rather than in the kernel tree. The kernel tree might # even be read-only. export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions # Files to ignore in find ... statements RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \ -o -name .pc -o -name .hg -o -name .git \) -prune -o export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ --exclude CVS --exclude .pc --exclude .hg --exclude .git # =========================================================================== # Rules shared between *config targets and build targets # Basic helpers built in scripts/ PHONY += scripts_basic scripts_basic: $(Q)$(MAKE) $(build)=scripts/basic $(Q)rm -f .tmp_quiet_recordmcount # To avoid any implicit rule to kick in, define an empty command. scripts/basic/%: scripts_basic ; PHONY += outputmakefile # outputmakefile generates a Makefile in the output directory, if using a # separate output directory. This allows convenient use of make in the # output directory. outputmakefile: ifneq ($(KBUILD_SRC),) $(Q)ln -fsn $(srctree) source $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) endif # To make sure we do not include .config for any of the *config targets # catch them early, and hand them over to scripts/kconfig/Makefile # It is allowed to specify more targets when calling make, including # mixing *config targets and build targets. # For example 'make oldconfig all'. # Detect when mixed targets is specified, and make a second invocation # of make so .config is not included in this case either (for *config). version_h := include/generated/version_autogenerated.h timestamp_h := include/generated/timestamp_autogenerated.h no-dot-config-targets := clean clobber mrproper distclean \ help %docs check% coccicheck \ ubootversion backup config-targets := 0 mixed-targets := 0 dot-config := 1 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) dot-config := 0 endif endif ifeq ($(KBUILD_EXTMOD),) ifneq ($(filter config %config,$(MAKECMDGOALS)),) config-targets := 1 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) mixed-targets := 1 endif endif endif ifeq ($(mixed-targets),1) # =========================================================================== # We're called with mixed targets (*config and build targets). # Handle them one by one. PHONY += $(MAKECMDGOALS) build-one-by-one $(MAKECMDGOALS): build-one-by-one @: build-one-by-one: $(Q)set -e; \ for i in $(MAKECMDGOALS); do \ $(MAKE) -f $(srctree)/Makefile $$i; \ done else ifeq ($(config-targets),1) # =========================================================================== # *config targets only - make sure prerequisites are updated, and descend # in scripts/kconfig to make the *config target # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. # KBUILD_DEFCONFIG may point out an alternative default configuration # used for 'make defconfig' %_config:: outputmakefile @$(MKCONFIG) -A $(@:_config=) else # =========================================================================== # Build targets only - this includes vmlinux, arch specific targets, clean # targets and others. In general all targets except *config targets. # load ARCH, BOARD, and CPU configuration -include include/config.mk ifeq ($(dot-config),1) # Read in config -include include/autoconf.mk -include include/autoconf.mk.dep # load other configuration include $(srctree)/config.mk ifeq ($(wildcard include/config.mk),) $(error "System not configured - see README") endif # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use # that (or fail if absent). Otherwise, search for a linker script in a # standard location. ifndef LDSCRIPT #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug ifdef CONFIG_SYS_LDSCRIPT # need to strip off double quotes LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%) endif endif # If there is no specified link script, we look in a number of places for it ifndef LDSCRIPT ifeq ($(CONFIG_NAND_U_BOOT),y) LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds ifeq ($(wildcard $(LDSCRIPT)),) LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds endif endif ifeq ($(wildcard $(LDSCRIPT)),) LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds endif ifeq ($(wildcard $(LDSCRIPT)),) LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds endif ifeq ($(wildcard $(LDSCRIPT)),) LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds endif endif else endif # $(dot-config) KBUILD_CFLAGS += -Os #-fomit-frame-pointer ifdef BUILD_TAG KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' endif KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) KBUILD_CFLAGS += -g # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format> # option to the assembler. KBUILD_AFLAGS += -g # Report stack usage if supported ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y) KBUILD_CFLAGS += -fstack-usage endif KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral) # turn jbsr into jsr for m68k ifeq ($(ARCH),m68k) ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) KBUILD_AFLAGS += -Wa,-gstabs,-S endif endif ifneq ($(CONFIG_SYS_TEXT_BASE),) KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) endif export CONFIG_SYS_TEXT_BASE # Use UBOOTINCLUDE when you must reference the include/ directory. # Needed to be compatible with the O= option UBOOTINCLUDE := ifneq ($(OBJTREE),$(SRCTREE)) UBOOTINCLUDE += -I$(OBJTREE)/include endif UBOOTINCLUDE += -I$(srctree)/include \ -I$(srctree)/arch/$(ARCH)/include NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) CHECKFLAGS += $(NOSTDINC_FLAGS) # FIX ME cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \ $(NOSTDINC_FLAGS) c_flags := $(KBUILD_CFLAGS) $(cpp_flags) ######################################################################### # U-Boot objects....order is important (i.e. start must be first) head-y := $(CPUDIR)/start.o head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n) libs-y += lib/ libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/ libs-y += $(CPUDIR)/ ifdef SOC libs-y += $(CPUDIR)/$(SOC)/ endif libs-$(CONFIG_OF_EMBED) += dts/ libs-y += arch/$(ARCH)/lib/ libs-y += fs/ libs-y += net/ libs-y += disk/ libs-y += drivers/ libs-$(CONFIG_DM) += drivers/core/ libs-y += drivers/dma/ libs-y += drivers/gpio/ libs-y += drivers/i2c/ libs-y += drivers/input/ libs-y += drivers/mmc/ libs-y += drivers/mtd/ libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/ libs-y += drivers/mtd/onenand/ libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/ libs-y += drivers/mtd/spi/ libs-y += drivers/net/ libs-y += drivers/net/phy/ libs-y += drivers/pci/ libs-y += drivers/power/ \ drivers/power/fuel_gauge/ \ drivers/power/mfd/ \ drivers/power/pmic/ \ drivers/power/battery/ libs-y += drivers/spi/ libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/ libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/ libs-y += drivers/serial/ libs-y += drivers/usb/eth/ libs-y += drivers/usb/gadget/ libs-y += drivers/usb/host/ libs-y += drivers/usb/musb/ libs-y += drivers/usb/musb-new/ libs-y += drivers/usb/phy/ libs-y += drivers/usb/ulpi/ libs-y += common/ libs-y += lib/libfdt/ libs-$(CONFIG_API) += api/ libs-$(CONFIG_HAS_POST) += post/ libs-y += test/ libs-y += test/dm/ libs-$(CONFIG_DM_DEMO) += drivers/demo/ ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610)) libs-y += arch/$(ARCH)/imx-common/ endif libs-$(CONFIG_ARM) += arch/arm/cpu/ libs-$(CONFIG_PPC) += arch/powerpc/cpu/ libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/) libs-y := $(sort $(libs-y)) u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-)))) libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) u-boot-init := $(head-y) u-boot-main := $(libs-y) # Add GCC lib ifdef CONFIG_USE_PRIVATE_LIBGCC ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a else PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc endif else PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc endif PLATFORM_LIBS += $(PLATFORM_LIBGCC) export PLATFORM_LIBS # Special flags for CPP when processing the linker script. # Pass the version down so we can handle backwards compatibility # on the fly. LDPPFLAGS += \ -include $(TOPDIR)/include/u-boot/u-boot.lds.h \ -DCPUDIR=$(CPUDIR) \ $(shell $(LD) --version | \ sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') ######################################################################### ######################################################################### ifneq ($(CONFIG_BOARD_SIZE_LIMIT),) BOARD_SIZE_CHECK = \ @actual=`wc -c $@ | awk '{print $$1}'`; \ limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \ if test $$actual -gt $$limit; then \ echo "$@ exceeds file size limit:" >&2 ; \ echo " limit: $$limit bytes" >&2 ; \ echo " actual: $$actual bytes" >&2 ; \ echo " excess: $$((actual - limit)) bytes" >&2; \ exit 1; \ fi else BOARD_SIZE_CHECK = endif # Statically apply RELA-style relocations (currently arm64 only) ifneq ($(CONFIG_STATIC_RELA),) # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base DO_STATIC_RELA = \ start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \ end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \ tools/relocate-rela $(2) $(3) $$start $$end else DO_STATIC_RELA = endif # Always append ALL so that arch config.mk's can add custom ones ALL-y += u-boot.srec u-boot.bin System.map ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb ifneq ($(CONFIG_SPL_TARGET),) ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%) endif ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf # enable combined SPL/u-boot/dtb rules for tegra ifneq ($(CONFIG_TEGRA),) ifeq ($(CONFIG_SPL),y) ifeq ($(CONFIG_OF_SEPARATE),y) ALL-y += u-boot-dtb-tegra.bin else ALL-y += u-boot-nodtb-tegra.bin endif endif endif LDFLAGS_u-boot += $(LDFLAGS_FINAL) ifneq ($(CONFIG_SYS_TEXT_BASE),) LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) endif quiet_cmd_objcopy = OBJCOPY $@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ quiet_cmd_mkimage = UIMAGE $@ cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ $(if $(KBUILD_VERBOSE:1=), >/dev/null) quiet_cmd_cat = CAT $@ cmd_cat = cat $(filter-out $(PHONY), $^) > $@ append = cat $(filter-out $< $(PHONY), $^) >> $@ quiet_cmd_pad_cat = CAT $@ cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@ all: $(ALL-y) PHONY += dtbs dtbs dts/dt.dtb: checkdtc u-boot $(Q)$(MAKE) $(build)=dts dtbs u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE $(call if_changed,cat) quiet_cmd_copy = COPY $@ cmd_copy = cp $< $@ u-boot.dtb: dts/dt.dtb $(call cmd,copy) OBJCOPYFLAGS_u-boot.hex := -O ihex OBJCOPYFLAGS_u-boot.srec := -O srec u-boot.hex u-boot.srec: u-boot FORCE $(call if_changed,objcopy) OBJCOPYFLAGS_u-boot.bin := -O binary u-boot.bin: u-boot FORCE $(call if_changed,objcopy) $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE)) $(BOARD_SIZE_CHECK) u-boot.ldr: u-boot $(CREATE_LDR_ENV) $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS) $(BOARD_SIZE_CHECK) OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE $(call if_changed,objcopy) # # U-Boot entry point, needed for booting of full-blown U-Boot # from the SPL U-Boot version. # ifndef CONFIG_SYS_UBOOT_START CONFIG_SYS_UBOOT_START := 0 endif MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \ -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" MKIMAGEFLAGS_u-boot.kwb = -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \ -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) MKIMAGEFLAGS_u-boot.pbl = -n $(CONFIG_SYS_FSL_PBL_RCW) \ -R $(CONFIG_SYS_FSL_PBL_PBI) -T pblimage u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE $(call if_changed,mkimage) u-boot.imx: u-boot.bin $(Q)$(MAKE) $(build)=arch/arm/imx-common $@ u-boot.sha1: u-boot.bin tools/ubsha1 u-boot.bin u-boot.dis: u-boot $(OBJDUMP) -d $< > $@ ifdef CONFIG_TPL SPL_PAYLOAD := tpl/u-boot-with-tpl.bin else SPL_PAYLOAD := u-boot.bin endif OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \ --pad-to=$(CONFIG_SPL_PAD_TO) u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE $(call if_changed,pad_cat) OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \ --pad-to=$(CONFIG_TPL_PAD_TO) tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE $(call if_changed,pad_cat) SPL: spl/u-boot-spl.bin FORCE $(Q)$(MAKE) $(build)=arch/arm/imx-common $@ u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE $(Q)$(MAKE) $(build)=arch/arm/imx-common $@ MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE) u-boot.ubl: u-boot-with-spl.bin FORCE $(call if_changed,mkimage) MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \ $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \ -T aisimage -e $(CONFIG_SPL_TEXT_BASE) spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE $(call if_changed,mkimage) OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_MAX_SIZE) u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE $(call if_changed,pad_cat) u-boot.sb: u-boot.bin spl/u-boot-spl.bin $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs $(objtree)/u-boot.sb # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL. # Both images are created using mkimage (crc etc), so that the ROM # bootloader can check its integrity. Padding needs to be done to the # SPL image (with mkimage header) and not the binary. Otherwise the resulting image # which is loaded/copied by the ROM bootloader to SRAM doesn't fit. # The resulting image containing both U-Boot images is called u-boot.spr MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \ -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE $(call if_changed,mkimage) OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \ --gap-fill=0xff u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE $(call if_changed,pad_cat) ifneq ($(CONFIG_TEGRA),) OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE) u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE $(call if_changed,pad_cat) ifeq ($(CONFIG_OF_SEPARATE),y) u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE $(call if_changed,cat) endif endif u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE $(call if_changed,cat) # PPC4xx needs the SPL at the end of the image, since the reset vector # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target # and need to introduce a new build target with the full blown U-Boot # at the start padded up to the start of the SPL image. And then concat # the SPL image to the end. OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \ --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE $(call if_changed,pad_cat) # Create a new ELF from a raw binary file. This is useful for arm64 # where static relocation needs to be performed on the raw binary, # but certain simulators only accept an ELF file (but don't do the # relocation). # FIXME refactor dts/Makefile to share target/arch detection u-boot.elf: u-boot.bin @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \ $< u-boot-elf.o @$(LD) u-boot-elf.o -o $@ \ --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \ -Ttext=$(CONFIG_SYS_TEXT_BASE) # Rule to link u-boot # May be overridden by arch/$(ARCH)/config.mk quiet_cmd_u-boot__ ?= LD $@ cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \ -T u-boot.lds $(u-boot-init) \ --start-group $(u-boot-main) --end-group \ $(PLATFORM_LIBS) -Map u-boot.map u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds $(call if_changed,u-boot__) ifeq ($(CONFIG_KALLSYMS),y) smap=`$(call SYSTEM_MAP,u-boot) | \ awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \ $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \ -c $(srctree)/common/system_map.c -o common/system_map.o $(call cmd,u-boot__) common/system_map.o endif # The actual objects are generated when descending, # make sure no implicit rule kicks in $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ; # Handle descending into subdirectories listed in $(vmlinux-dirs) # Preset locale variables to speed up the build process. Limit locale # tweaks to this spot to avoid wrong language settings when running # make menuconfig etc. # Error messages still appears in the original language PHONY += $(u-boot-dirs) $(u-boot-dirs): prepare scripts $(Q)$(MAKE) $(build)=$@ tools: prepare # The "tools" are needed early $(filter-out tools, $(u-boot-dirs)): tools # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC # is "yes"), so compile examples after U-Boot is compiled. examples: $(filter-out examples, $(u-boot-dirs)) define filechk_uboot.release echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" endef # Store (new) UBOOTRELEASE string in include/config/uboot.release include/config/uboot.release: Makefile FORCE $(call filechk,uboot.release) # Things we need to do before we recursively start building the kernel # or the modules are listed in "prepare". # A multi level approach is used. prepareN is processed before prepareN-1. # archprepare is used in arch Makefiles and when processed asm symlink, # version.h and scripts_basic is processed / created. # Listed in dependency order PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 # prepare3 is used to check if we are building in a separate output directory, # and if so do: # 1) Check that make has not been executed in the kernel src $(srctree) prepare3: include/config/uboot.release ifneq ($(KBUILD_SRC),) @$(kecho) ' Using $(srctree) as source for u-boot' $(Q)if [ -f $(srctree)/include/config.mk ]; then \ echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ echo >&2 " in the '$(srctree)' directory.";\ /bin/false; \ fi; endif # prepare2 creates a makefile if using a separate output directory prepare2: prepare3 outputmakefile prepare1: prepare2 $(version_h) $(timestamp_h) ifeq ($(__HAVE_ARCH_GENERIC_BOARD),) ifeq ($(CONFIG_SYS_GENERIC_BOARD),y) @echo >&2 " Your architecture does not support generic board." @echo >&2 " Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file." @/bin/false endif endif ifeq ($(wildcard $(LDSCRIPT)),) @echo >&2 " Could not find linker script." @/bin/false endif archprepare: prepare1 scripts_basic prepare0: archprepare FORCE $(Q)$(MAKE) $(build)=. # All the preparing.. prepare: prepare0 # Generate some files # --------------------------------------------------------------------------- define filechk_version.h (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \ echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \ echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \ echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; ) endef define filechk_timestamp.h (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \ LC_ALL=C date +'#define U_BOOT_TIME "%T"') endef $(version_h): include/config/uboot.release FORCE $(call filechk,version.h) $(timestamp_h): $(srctree)/Makefile FORCE $(call filechk,timestamp.h) # # Auto-generate the autoconf.mk file (which is included by all makefiles) # # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep. # the dep file is only include in this top level makefile to determine when # to regenerate the autoconf.mk file. quiet_cmd_autoconf_dep = GEN $@ cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \ -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@ include/autoconf.mk.dep: include/config.h include/common.h $(call cmd,autoconf_dep) quiet_cmd_autoconf = GEN $@ cmd_autoconf = \ $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \ sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \ rm $@.tmp include/autoconf.mk: include/config.h $(call cmd,autoconf) # --------------------------------------------------------------------------- PHONY += depend dep depend dep: @echo '*** Warning: make $@ is unnecessary now.' # --------------------------------------------------------------------------- quiet_cmd_cpp_lds = LDS $@ cmd_cpp_lds = $(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ \ -x assembler-with-cpp -P -o $@ $< u-boot.lds: $(LDSCRIPT) prepare FORCE $(call if_changed,cpp_lds) PHONY += nand_spl nand_spl: prepare $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all @echo >&2 @echo >&2 "==================== WARNING =====================" @echo >&2 "nand_spl will not be included in v2014.07 release." @echo >&2 "Please switch over to SPL." @echo >&2 "Otherwise, this board will be removed." @echo >&2 "==================================================" @echo >&2 nand_spl/u-boot-spl-16k.bin: nand_spl @: u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE $(call if_changed,cat) spl/u-boot-spl.bin: spl/u-boot-spl @: spl/u-boot-spl: tools prepare $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all tpl/u-boot-tpl.bin: tools prepare $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y TAG_SUBDIRS := $(u-boot-dirs) include FIND := find FINDFLAGS := -L tags ctags: ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ -name '*.[chS]' -print` etags: etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ -name '*.[chS]' -print` cscope: $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \ cscope.files cscope -b -q -k SYSTEM_MAP = \ $(NM) $1 | \ grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \ LC_ALL=C sort System.map: u-boot @$(call SYSTEM_MAP,$<) > $@ checkdtc: @if test $(call dtc-version) -lt 0104; then \ echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \ false; \ fi ######################################################################### # ARM relocations should all be R_ARM_RELATIVE (32-bit) or # R_AARCH64_RELATIVE (64-bit). checkarmreloc: u-boot @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \ grep R_A | sort -u`"; \ if test "$$RELOC" != "R_ARM_RELATIVE" -a \ "$$RELOC" != "R_AARCH64_RELATIVE"; then \ echo "$< contains unexpected relocations: $$RELOC"; \ false; \ fi env: scripts_basic $(Q)$(MAKE) $(build)=tools/$@ tools-all: export HOST_TOOLS_ALL=y tools-all: env tools ; cross_tools: export CROSS_BUILD_TOOLS=y cross_tools: tools ; .PHONY : CHANGELOG CHANGELOG: git log --no-merges U-Boot-1_1_5.. | \ unexpand -a | sed -e 's/\s\s*$$//' > $@ include/license.h: tools/bin2header COPYING cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h ######################################################################### ### # Cleaning is done on three levels. # make clean Delete most generated files # Leave enough to build external modules # make mrproper Delete the current configuration, and all generated files # make distclean Remove editor backup files, patch leftover files and the like # Directories & files removed with 'make clean' CLEAN_DIRS += $(MODVERDIR) CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \ include/autoconf.mk* include/spl-autoconf.mk \ include/tpl-autoconf.mk # Directories & files removed with 'make clobber' CLOBBER_DIRS += $(patsubst %,spl/%, $(filter-out Makefile, \ $(shell ls -1 spl 2>/dev/null))) \ tpl CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot* # Directories & files removed with 'make mrproper' MRPROPER_DIRS += include/config include/generated MRPROPER_FILES += .config .config.old \ tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ include/config.h include/config.mk # clean - Delete most, but leave enough to build external modules # clean: rm-dirs := $(CLEAN_DIRS) clean: rm-files := $(CLEAN_FILES) clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $f/Makefile),$f)) clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook) PHONY += $(clean-dirs) clean archclean $(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) # TODO: Do not use *.cfgtmp clean: $(clean-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \ -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ -o -name '*.symtypes' -o -name 'modules.order' \ -o -name modules.builtin -o -name '.tmp_*.o.*' \ -o -name '*.gcno' \) -type f -print | xargs rm -f @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ -path './nand_spl/*' -type l -print | xargs rm -f # clobber # clobber: rm-dirs := $(CLOBBER_DIRS) clobber: rm-files := $(CLOBBER_FILES) PHONY += clobber clobber: clean $(call cmd,rmdirs) $(call cmd,rmfiles) # mrproper - Delete all generated files, including .config # mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) mrproper-dirs := $(addprefix _mrproper_,scripts) PHONY += $(mrproper-dirs) mrproper archmrproper $(mrproper-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) mrproper: clobber $(mrproper-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) @rm -f arch/*/include/asm/arch arch/*/include/asm/proc # distclean # PHONY += distclean distclean: mrproper @find $(srctree) $(RCS_FIND_IGNORE) \ \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ -o -name '.*.rej' \ -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ -type f -print | xargs rm -f backup: F=`basename $(TOPDIR)` ; cd .. ; \ gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F help: @echo 'Cleaning targets:' @echo ' clean - Remove most generated files but keep the config and' @echo ' necessities for testing u-boot' @echo ' clobber - Remove most generated files but keep the config' @echo ' mrproper - Remove all generated files + config + various backup files' @echo ' distclean - mrproper + remove editor backup and patch files' @echo '' # uncomment after adding Kconfig feature # @echo 'Configuration targets:' # @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help # @echo '' @echo 'Other generic targets:' @echo ' all - Build all necessary images depending on configuration' @echo ' u-boot - Build the bare u-boot' @echo ' dir/ - Build all files in dir and below' @echo ' dir/file.[oisS] - Build specified target only' @echo ' dir/file.lst - Build specified mixed source/assembly target only' @echo ' (requires a recent binutils and recent build (System.map))' @echo ' tags/TAGS - Generate tags file for editors' @echo ' cscope - Generate cscope index' @echo ' ubootrelease - Output the release version string' @echo ' ubootversion - Output the version stored in Makefile' @echo '' @echo 'Static analysers' @echo ' checkstack - Generate a list of stack hogs' @echo '' @echo 'Documentation targets:' @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp @echo '' @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' @echo ' make V=2 [targets] 2 => give reason for rebuild of target' @echo ' make O=dir [targets] Locate all output files in "dir", including .config' @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' @echo ' make C=2 [targets] Force check of all c source with $$CHECK' @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' @echo ' 1: warnings which may be relevant and do not occur too often' @echo ' 2: warnings which occur quite often but may still be relevant' @echo ' 3: more obscure warnings, can most likely be ignored' @echo ' Multiple levels can be combined with W=12 or W=123' @echo '' @echo 'Execute "make" or "make all" to build all targets marked with [*] ' @echo 'For further info see the ./README file' # Documentation targets # --------------------------------------------------------------------------- %docs: scripts_basic FORCE $(Q)$(MAKE) $(build)=scripts build_docproc $(Q)$(MAKE) $(build)=doc/DocBook $@ # Dummies... PHONY += prepare scripts prepare: ; scripts: ; endif #ifeq ($(config-targets),1) endif #ifeq ($(mixed-targets),1) PHONY += checkstack ubootrelease ubootversion checkstack: $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \ $(PERL) $(src)/scripts/checkstack.pl $(ARCH) ubootrelease: @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" ubootversion: @echo $(UBOOTVERSION) # Single targets # --------------------------------------------------------------------------- # Single targets are compatible with: # - build with mixed source and output # - build with separate output dir 'make O=...' # - external modules # # target-dir => where to store outputfile # build-dir => directory in kernel source tree to use ifeq ($(KBUILD_EXTMOD),) build-dir = $(patsubst %/,%,$(dir $@)) target-dir = $(dir $@) else zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) endif %.s: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.i: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.o: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.lst: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.s: %.S prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.o: %.S prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.symtypes: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) # Modules /: prepare scripts FORCE $(cmd_crmodverdir) $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) %/: prepare scripts FORCE $(cmd_crmodverdir) $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) %.ko: prepare scripts FORCE $(cmd_crmodverdir) $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) $(@:.ko=.o) $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost # FIXME Should go into a make.lib or something # =========================================================================== quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) cmd_rmdirs = rm -rf $(rm-dirs) quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) cmd_rmfiles = rm -f $(rm-files) # read all saved command lines targets := $(wildcard $(sort $(targets))) cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) ifneq ($(cmd_files),) $(cmd_files): ; # Do not try to update included dependency files include $(cmd_files) endif # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir # Usage: # $(Q)$(MAKE) $(clean)=dir clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj endif # skip-makefile PHONY += FORCE FORCE: # Declare the contents of the .PHONY variable as phony. We keep that # information in a variable so we can use it in if_changed and friends. .PHONY: $(PHONY)