tools/Makefile - platform/external/u-boot - Gitiles

 #
 # (C) Copyright 2000-2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # SPDX-License-Identifier:	GPL-2.0+
 #

 # Enable all the config-independent tools
 ifneq ($(HOST_TOOLS_ALL),)
 CONFIG_LCD_LOGO = y
 CONFIG_CMD_LOADS = y
 CONFIG_CMD_NET = y
 CONFIG_XWAY_SWAP_BYTES = y
 CONFIG_NETCONSOLE = y
 CONFIG_SHA1_CHECK_UB_IMG = y
 CONFIG_SUNXI = y
 endif

 subdir-$(HOST_TOOLS_ALL) += easylogo
 subdir-$(HOST_TOOLS_ALL) += gdb

 # Merge all the different vars for envcrc into one
 ENVCRC-$(CONFIG_ENV_IS_EMBEDDED) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_DATAFLASH) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_EEPROM) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_FLASH) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_ONENAND) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_NAND) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_NVRAM) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_SPI_FLASH) = y
 CONFIG_BUILD_ENVCRC ?= $(ENVCRC-y)

 hostprogs-$(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER) += atmel_pmecc_params

 hostprogs-$(CONFIG_CMD_LICENSE) += bin2header
 hostprogs-$(CONFIG_LCD_LOGO) += bmp_logo
 hostprogs-$(CONFIG_VIDEO_LOGO) += bmp_logo
 HOSTCFLAGS_bmp_logo.o := -pedantic

 hostprogs-$(CONFIG_BUILD_ENVCRC) += envcrc
 envcrc-objs := envcrc.o lib/crc32.o common/env_embedded.o lib/sha1.o

 hostprogs-$(CONFIG_CMD_NET) += gen_eth_addr
 HOSTCFLAGS_gen_eth_addr.o := -pedantic

 hostprogs-$(CONFIG_CMD_LOADS) += img2srec
 HOSTCFLAGS_img2srec.o := -pedantic

 hostprogs-$(CONFIG_XWAY_SWAP_BYTES) += xway-swap-bytes
 HOSTCFLAGS_xway-swap-bytes.o := -pedantic

 hostprogs-y += mkenvimage
 mkenvimage-objs := mkenvimage.o os_support.o lib/crc32.o

 hostprogs-y += dumpimage mkimage
 hostprogs-$(CONFIG_FIT_SIGNATURE) += fit_info fit_check_sign

 FIT_SIG_OBJS-$(CONFIG_FIT_SIGNATURE) := common/image-sig.o
 # Flattened device tree objects
 LIBFDT_OBJS := $(addprefix lib/libfdt/, \
 			fdt.o fdt_ro.o fdt_rw.o fdt_strerror.o fdt_wip.o \
 			fdt_region.o fdt_sw.o)
 RSA_OBJS-$(CONFIG_FIT_SIGNATURE) := $(addprefix lib/rsa/, \
 					rsa-sign.o rsa-verify.o rsa-checksum.o \
 					rsa-mod-exp.o)

 ROCKCHIP_OBS = lib/rc4.o rkcommon.o rkimage.o rksd.o rkspi.o

 # common objs for dumpimage and mkimage
 dumpimage-mkimage-objs := aisimage.o \
 			atmelimage.o \
 			$(FIT_SIG_OBJS-y) \
 			common/bootm.o \
 			lib/crc32.o \
 			default_image.o \
 			lib/fdtdec_common.o \
 			lib/fdtdec.o \
 			fit_common.o \
 			fit_image.o \
 			common/image-fit.o \
 			image-host.o \
 			common/image.o \
 			imagetool.o \
 			imximage.o \
 			kwbimage.o \
 			lib/md5.o \
 			lpc32xximage.o \
 			mxsimage.o \
 			omapimage.o \
 			os_support.o \
 			pblimage.o \
 			pbl_crc32.o \
 			vybridimage.o \
 			$(ROCKCHIP_OBS) \
 			socfpgaimage.o \
 			lib/sha1.o \
 			lib/sha256.o \
 			common/hash.o \
 			ublimage.o \
 			zynqimage.o \
 			zynqmpimage.o \
 			$(LIBFDT_OBJS) \
 			gpimage.o \
 			gpimage-common.o \
 			$(RSA_OBJS-y)

 dumpimage-objs := $(dumpimage-mkimage-objs) dumpimage.o
 mkimage-objs   := $(dumpimage-mkimage-objs) mkimage.o
 fit_info-objs   := $(dumpimage-mkimage-objs) fit_info.o
 fit_check_sign-objs   := $(dumpimage-mkimage-objs) fit_check_sign.o

 # Build a libfdt Python module if swig is available
 # Use 'sudo apt-get install swig libpython-dev' to enable this
 hostprogs-$(CONFIG_SPL_OF_PLATDATA) += \
 	$(if $(shell which swig),_libfdt.so)
 _libfdt.so-sharedobjs += $(LIBFDT_OBJS)
 libfdt:

 tools/_libfdt.so: $(patsubst %.o,%.c,$(LIBFDT_OBJS)) tools/libfdt_wrap.c
 	python $(srctree)/lib/libfdt/setup.py "$(_hostc_flags)" $^
 	mv _libfdt.so $@

 tools/libfdt_wrap.c: $(srctree)/lib/libfdt/libfdt.swig
 	swig -python -o $@ $<

 # TODO(sjg@chromium.org): Is this correct on Mac OS?

 ifneq ($(CONFIG_MX23)$(CONFIG_MX28),)
 # Add CONFIG_MXS into host CFLAGS, so we can check whether or not register
 # the mxsimage support within tools/mxsimage.c .
 HOSTCFLAGS_mxsimage.o += -DCONFIG_MXS
 endif

 ifdef CONFIG_FIT_SIGNATURE
 # This affects include/image.h, but including the board config file
 # is tricky, so manually define this options here.
 HOST_EXTRACFLAGS	+= -DCONFIG_FIT_SIGNATURE
 endif

 ifdef CONFIG_SYS_U_BOOT_OFFS
 HOSTCFLAGS_kwbimage.o += -DCONFIG_SYS_U_BOOT_OFFS=$(CONFIG_SYS_U_BOOT_OFFS)
 endif

 # MXSImage needs LibSSL
 ifneq ($(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_FIT_SIGNATURE),)
 HOSTLOADLIBES_mkimage += \
 	$(shell pkg-config --libs libssl libcrypto 2> /dev/null || echo "-lssl -lcrypto")

 # OS X deprecate openssl in favour of CommonCrypto, supress deprecation
 # warnings on those systems
 ifeq ($(HOSTOS),darwin)
 HOSTCFLAGS_mxsimage.o += -Wno-deprecated-declarations
 HOSTCFLAGS_image-sig.o += -Wno-deprecated-declarations
 HOSTCFLAGS_rsa-sign.o += -Wno-deprecated-declarations
 endif
 endif

 HOSTLOADLIBES_dumpimage := $(HOSTLOADLIBES_mkimage)
 HOSTLOADLIBES_fit_info := $(HOSTLOADLIBES_mkimage)
 HOSTLOADLIBES_fit_check_sign := $(HOSTLOADLIBES_mkimage)

 hostprogs-$(CONFIG_EXYNOS5250) += mkexynosspl
 hostprogs-$(CONFIG_EXYNOS5420) += mkexynosspl
 HOSTCFLAGS_mkexynosspl.o := -pedantic

 ifdtool-objs := $(LIBFDT_OBJS) ifdtool.o
 hostprogs-$(CONFIG_X86) += ifdtool

 hostprogs-$(CONFIG_MX23) += mxsboot
 hostprogs-$(CONFIG_MX28) += mxsboot
 HOSTCFLAGS_mxsboot.o := -pedantic

 hostprogs-$(CONFIG_ARCH_SUNXI) += mksunxiboot

 hostprogs-$(CONFIG_NETCONSOLE) += ncb
 hostprogs-$(CONFIG_SHA1_CHECK_UB_IMG) += ubsha1

 ubsha1-objs := os_support.o ubsha1.o lib/sha1.o

 HOSTCFLAGS_ubsha1.o := -pedantic

 hostprogs-$(CONFIG_KIRKWOOD) += kwboot
 hostprogs-$(CONFIG_ARCH_MVEBU) += kwboot
 hostprogs-y += proftool
 hostprogs-$(CONFIG_STATIC_RELA) += relocate-rela

 hostprogs-y += fdtgrep
 fdtgrep-objs += $(LIBFDT_OBJS) fdtgrep.o

 # We build some files with extra pedantic flags to try to minimize things
 # that won't build on some weird host compiler -- though there are lots of
 # exceptions for files that aren't complaint.
 HOSTCFLAGS_crc32.o := -pedantic
 HOSTCFLAGS_md5.o := -pedantic
 HOSTCFLAGS_sha1.o := -pedantic
 HOSTCFLAGS_sha256.o := -pedantic

 quiet_cmd_wrap = WRAP    $@
 cmd_wrap = echo "\#include <../$(patsubst $(obj)/%,%,$@)>" >$@

 $(obj)/lib/%.c $(obj)/common/%.c:
 	$(call cmd,wrap)

 clean-dirs := lib common

 always := $(hostprogs-y)

 # Generated LCD/video logo
 LOGO_H = $(objtree)/include/bmp_logo.h
 LOGO_DATA_H = $(objtree)/include/bmp_logo_data.h
 LOGO-$(CONFIG_LCD_LOGO) += $(LOGO_H)
 LOGO-$(CONFIG_LCD_LOGO) += $(LOGO_DATA_H)
 LOGO-$(CONFIG_VIDEO_LOGO) += $(LOGO_H)
 LOGO-$(CONFIG_VIDEO_LOGO) += $(LOGO_DATA_H)

 # Generic logo
 ifeq ($(LOGO_BMP),)
 LOGO_BMP= $(srctree)/$(src)/logos/denx.bmp

 # Use board logo and fallback to vendor
 ifneq ($(wildcard $(srctree)/$(src)/logos/$(BOARD).bmp),)
 LOGO_BMP= $(srctree)/$(src)/logos/$(BOARD).bmp
 else
 ifneq ($(wildcard $(srctree)/$(src)/logos/$(VENDOR).bmp),)
 LOGO_BMP= $(srctree)/$(src)/logos/$(VENDOR).bmp
 endif
 endif

 endif # !LOGO_BMP

 # Generated gziped GPL-2.0 license text
 LICENSE_H = $(objtree)/include/license.h
 LICENSE-$(CONFIG_CMD_LICENSE) += $(LICENSE_H)

 #
 # Use native tools and options
 # Define __KERNEL_STRICT_NAMES to prevent typedef overlaps
 # Define _GNU_SOURCE to obtain the getline prototype from stdio.h
 #
 HOST_EXTRACFLAGS += -include $(srctree)/include/libfdt_env.h \
 		$(patsubst -I%,-idirafter%, $(filter -I%, $(UBOOTINCLUDE))) \
 		-I$(srctree)/lib/libfdt \
 		-I$(srctree)/tools \
 		-DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) \
 		-DUSE_HOSTCC \
 		-D__KERNEL_STRICT_NAMES \
 		-D_GNU_SOURCE

 __build:	$(LOGO-y) $(LICENSE-y)

 $(LOGO_H):	$(obj)/bmp_logo $(LOGO_BMP)
 	$(obj)/bmp_logo --gen-info $(LOGO_BMP) > $@

 $(LOGO_DATA_H):	$(obj)/bmp_logo $(LOGO_BMP)
 	$(obj)/bmp_logo --gen-data $(LOGO_BMP) > $@

 $(LICENSE_H): $(obj)/bin2header $(srctree)/Licenses/gpl-2.0.txt
 	cat $(srctree)/Licenses/gpl-2.0.txt | gzip -9 -c | \
 		$(obj)/bin2header license_gzip > $(LICENSE_H)

 # Let clean descend into subdirs
 subdir- += env

 ifneq ($(CROSS_BUILD_TOOLS),)
 HOSTCC = $(CC)

 quiet_cmd_crosstools_strip = STRIP   $^
       cmd_crosstools_strip = $(STRIP) $^; touch $@
 $(obj)/.strip: $(call objectify,$(filter $(always),$(hostprogs-y)))
 	$(call cmd,crosstools_strip)

 always += .strip
 endif
 clean-files += .strip
	#
	# (C) Copyright 2000-2006
	# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	#
	# SPDX-License-Identifier: GPL-2.0+
	#

	# Enable all the config-independent tools
	ifneq ($(HOST_TOOLS_ALL),)
	CONFIG_LCD_LOGO = y
	CONFIG_CMD_LOADS = y
	CONFIG_CMD_NET = y
	CONFIG_XWAY_SWAP_BYTES = y
	CONFIG_NETCONSOLE = y
	CONFIG_SHA1_CHECK_UB_IMG = y
	CONFIG_SUNXI = y
	endif

	subdir-$(HOST_TOOLS_ALL) += easylogo
	subdir-$(HOST_TOOLS_ALL) += gdb

	# Merge all the different vars for envcrc into one
	ENVCRC-$(CONFIG_ENV_IS_EMBEDDED) = y
	ENVCRC-$(CONFIG_ENV_IS_IN_DATAFLASH) = y
	ENVCRC-$(CONFIG_ENV_IS_IN_EEPROM) = y
	ENVCRC-$(CONFIG_ENV_IS_IN_FLASH) = y
	ENVCRC-$(CONFIG_ENV_IS_IN_ONENAND) = y
	ENVCRC-$(CONFIG_ENV_IS_IN_NAND) = y
	ENVCRC-$(CONFIG_ENV_IS_IN_NVRAM) = y
	ENVCRC-$(CONFIG_ENV_IS_IN_SPI_FLASH) = y
	CONFIG_BUILD_ENVCRC ?= $(ENVCRC-y)

	hostprogs-$(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER) += atmel_pmecc_params

	hostprogs-$(CONFIG_CMD_LICENSE) += bin2header
	hostprogs-$(CONFIG_LCD_LOGO) += bmp_logo
	hostprogs-$(CONFIG_VIDEO_LOGO) += bmp_logo
	HOSTCFLAGS_bmp_logo.o := -pedantic

	hostprogs-$(CONFIG_BUILD_ENVCRC) += envcrc
	envcrc-objs := envcrc.o lib/crc32.o common/env_embedded.o lib/sha1.o

	hostprogs-$(CONFIG_CMD_NET) += gen_eth_addr
	HOSTCFLAGS_gen_eth_addr.o := -pedantic

	hostprogs-$(CONFIG_CMD_LOADS) += img2srec
	HOSTCFLAGS_img2srec.o := -pedantic

	hostprogs-$(CONFIG_XWAY_SWAP_BYTES) += xway-swap-bytes
	HOSTCFLAGS_xway-swap-bytes.o := -pedantic

	hostprogs-y += mkenvimage
	mkenvimage-objs := mkenvimage.o os_support.o lib/crc32.o

	hostprogs-y += dumpimage mkimage
	hostprogs-$(CONFIG_FIT_SIGNATURE) += fit_info fit_check_sign

	FIT_SIG_OBJS-$(CONFIG_FIT_SIGNATURE) := common/image-sig.o
	# Flattened device tree objects
	LIBFDT_OBJS := $(addprefix lib/libfdt/, \
	fdt.o fdt_ro.o fdt_rw.o fdt_strerror.o fdt_wip.o \
	fdt_region.o fdt_sw.o)
	RSA_OBJS-$(CONFIG_FIT_SIGNATURE) := $(addprefix lib/rsa/, \
	rsa-sign.o rsa-verify.o rsa-checksum.o \
	rsa-mod-exp.o)

	ROCKCHIP_OBS = lib/rc4.o rkcommon.o rkimage.o rksd.o rkspi.o

	# common objs for dumpimage and mkimage
	dumpimage-mkimage-objs := aisimage.o \
	atmelimage.o \
	$(FIT_SIG_OBJS-y) \
	common/bootm.o \
	lib/crc32.o \
	default_image.o \
	lib/fdtdec_common.o \
	lib/fdtdec.o \
	fit_common.o \
	fit_image.o \
	common/image-fit.o \
	image-host.o \
	common/image.o \
	imagetool.o \
	imximage.o \
	kwbimage.o \
	lib/md5.o \
	lpc32xximage.o \
	mxsimage.o \
	omapimage.o \
	os_support.o \
	pblimage.o \
	pbl_crc32.o \
	vybridimage.o \
	$(ROCKCHIP_OBS) \
	socfpgaimage.o \
	lib/sha1.o \
	lib/sha256.o \
	common/hash.o \
	ublimage.o \
	zynqimage.o \
	zynqmpimage.o \
	$(LIBFDT_OBJS) \
	gpimage.o \
	gpimage-common.o \
	$(RSA_OBJS-y)

	dumpimage-objs := $(dumpimage-mkimage-objs) dumpimage.o
	mkimage-objs := $(dumpimage-mkimage-objs) mkimage.o
	fit_info-objs := $(dumpimage-mkimage-objs) fit_info.o
	fit_check_sign-objs := $(dumpimage-mkimage-objs) fit_check_sign.o

	# Build a libfdt Python module if swig is available
	# Use 'sudo apt-get install swig libpython-dev' to enable this
	hostprogs-$(CONFIG_SPL_OF_PLATDATA) += \
	$(if $(shell which swig),_libfdt.so)
	_libfdt.so-sharedobjs += $(LIBFDT_OBJS)
	libfdt:

	tools/_libfdt.so: $(patsubst %.o,%.c,$(LIBFDT_OBJS)) tools/libfdt_wrap.c
	python $(srctree)/lib/libfdt/setup.py "$(_hostc_flags)" $^
	mv _libfdt.so $@

	tools/libfdt_wrap.c: $(srctree)/lib/libfdt/libfdt.swig
	swig -python -o $@ $<

	# TODO(sjg@chromium.org): Is this correct on Mac OS?

	ifneq ($(CONFIG_MX23)$(CONFIG_MX28),)
	# Add CONFIG_MXS into host CFLAGS, so we can check whether or not register
	# the mxsimage support within tools/mxsimage.c .
	HOSTCFLAGS_mxsimage.o += -DCONFIG_MXS
	endif

	ifdef CONFIG_FIT_SIGNATURE
	# This affects include/image.h, but including the board config file
	# is tricky, so manually define this options here.
	HOST_EXTRACFLAGS += -DCONFIG_FIT_SIGNATURE
	endif

	ifdef CONFIG_SYS_U_BOOT_OFFS
	HOSTCFLAGS_kwbimage.o += -DCONFIG_SYS_U_BOOT_OFFS=$(CONFIG_SYS_U_BOOT_OFFS)
	endif

	# MXSImage needs LibSSL
	ifneq ($(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_FIT_SIGNATURE),)
	HOSTLOADLIBES_mkimage += \
	$(shell pkg-config --libs libssl libcrypto 2> /dev/null \|\| echo "-lssl -lcrypto")

	# OS X deprecate openssl in favour of CommonCrypto, supress deprecation
	# warnings on those systems
	ifeq ($(HOSTOS),darwin)
	HOSTCFLAGS_mxsimage.o += -Wno-deprecated-declarations
	HOSTCFLAGS_image-sig.o += -Wno-deprecated-declarations
	HOSTCFLAGS_rsa-sign.o += -Wno-deprecated-declarations
	endif
	endif

	HOSTLOADLIBES_dumpimage := $(HOSTLOADLIBES_mkimage)
	HOSTLOADLIBES_fit_info := $(HOSTLOADLIBES_mkimage)
	HOSTLOADLIBES_fit_check_sign := $(HOSTLOADLIBES_mkimage)

	hostprogs-$(CONFIG_EXYNOS5250) += mkexynosspl
	hostprogs-$(CONFIG_EXYNOS5420) += mkexynosspl
	HOSTCFLAGS_mkexynosspl.o := -pedantic

	ifdtool-objs := $(LIBFDT_OBJS) ifdtool.o
	hostprogs-$(CONFIG_X86) += ifdtool

	hostprogs-$(CONFIG_MX23) += mxsboot
	hostprogs-$(CONFIG_MX28) += mxsboot
	HOSTCFLAGS_mxsboot.o := -pedantic

	hostprogs-$(CONFIG_ARCH_SUNXI) += mksunxiboot

	hostprogs-$(CONFIG_NETCONSOLE) += ncb
	hostprogs-$(CONFIG_SHA1_CHECK_UB_IMG) += ubsha1

	ubsha1-objs := os_support.o ubsha1.o lib/sha1.o

	HOSTCFLAGS_ubsha1.o := -pedantic

	hostprogs-$(CONFIG_KIRKWOOD) += kwboot
	hostprogs-$(CONFIG_ARCH_MVEBU) += kwboot
	hostprogs-y += proftool
	hostprogs-$(CONFIG_STATIC_RELA) += relocate-rela

	hostprogs-y += fdtgrep
	fdtgrep-objs += $(LIBFDT_OBJS) fdtgrep.o

	# We build some files with extra pedantic flags to try to minimize things
	# that won't build on some weird host compiler -- though there are lots of
	# exceptions for files that aren't complaint.
	HOSTCFLAGS_crc32.o := -pedantic
	HOSTCFLAGS_md5.o := -pedantic
	HOSTCFLAGS_sha1.o := -pedantic
	HOSTCFLAGS_sha256.o := -pedantic

	quiet_cmd_wrap = WRAP $@
	cmd_wrap = echo "\#include <../$(patsubst $(obj)/%,%,$@)>" >$@

	$(obj)/lib/%.c $(obj)/common/%.c:
	$(call cmd,wrap)

	clean-dirs := lib common

	always := $(hostprogs-y)

	# Generated LCD/video logo
	LOGO_H = $(objtree)/include/bmp_logo.h
	LOGO_DATA_H = $(objtree)/include/bmp_logo_data.h
	LOGO-$(CONFIG_LCD_LOGO) += $(LOGO_H)
	LOGO-$(CONFIG_LCD_LOGO) += $(LOGO_DATA_H)
	LOGO-$(CONFIG_VIDEO_LOGO) += $(LOGO_H)
	LOGO-$(CONFIG_VIDEO_LOGO) += $(LOGO_DATA_H)

	# Generic logo
	ifeq ($(LOGO_BMP),)
	LOGO_BMP= $(srctree)/$(src)/logos/denx.bmp

	# Use board logo and fallback to vendor
	ifneq ($(wildcard $(srctree)/$(src)/logos/$(BOARD).bmp),)
	LOGO_BMP= $(srctree)/$(src)/logos/$(BOARD).bmp
	else
	ifneq ($(wildcard $(srctree)/$(src)/logos/$(VENDOR).bmp),)
	LOGO_BMP= $(srctree)/$(src)/logos/$(VENDOR).bmp
	endif
	endif

	endif # !LOGO_BMP

	# Generated gziped GPL-2.0 license text
	LICENSE_H = $(objtree)/include/license.h
	LICENSE-$(CONFIG_CMD_LICENSE) += $(LICENSE_H)

	#
	# Use native tools and options
	# Define __KERNEL_STRICT_NAMES to prevent typedef overlaps
	# Define _GNU_SOURCE to obtain the getline prototype from stdio.h
	#
	HOST_EXTRACFLAGS += -include $(srctree)/include/libfdt_env.h \
	$(patsubst -I%,-idirafter%, $(filter -I%, $(UBOOTINCLUDE))) \
	-I$(srctree)/lib/libfdt \
	-I$(srctree)/tools \
	-DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) \
	-DUSE_HOSTCC \
	-D__KERNEL_STRICT_NAMES \
	-D_GNU_SOURCE

	__build: $(LOGO-y) $(LICENSE-y)

	$(LOGO_H): $(obj)/bmp_logo $(LOGO_BMP)
	$(obj)/bmp_logo --gen-info $(LOGO_BMP) > $@

	$(LOGO_DATA_H): $(obj)/bmp_logo $(LOGO_BMP)
	$(obj)/bmp_logo --gen-data $(LOGO_BMP) > $@

	$(LICENSE_H): $(obj)/bin2header $(srctree)/Licenses/gpl-2.0.txt
	cat $(srctree)/Licenses/gpl-2.0.txt \| gzip -9 -c \| \
	$(obj)/bin2header license_gzip > $(LICENSE_H)

	# Let clean descend into subdirs
	subdir- += env

	ifneq ($(CROSS_BUILD_TOOLS),)
	HOSTCC = $(CC)

	quiet_cmd_crosstools_strip = STRIP $^
	cmd_crosstools_strip = $(STRIP) $^; touch $@
	$(obj)/.strip: $(call objectify,$(filter $(always),$(hostprogs-y)))
	$(call cmd,crosstools_strip)

	always += .strip
	endif
	clean-files += .strip