[thirdparty/linux.git] / usr / Makefile

#
# kbuild file for usr/ - including initramfs image
#

klibcdirs:;
PHONY += klibcdirs

suffix_y = $(subst $\",,$(CONFIG_INITRAMFS_COMPRESSION))
AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)"

# Generate builtin.o based on initramfs_data.o
obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o

# initramfs_data.o contains the compressed initramfs_data.cpio image.
# The image is included using .incbin, a dependency which is not
# tracked automatically.
$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE

#####
# Generate the initramfs cpio archive

hostprogs-y := gen_init_cpio
initramfs   := $(CONFIG_SHELL) $(srctree)/scripts/gen_initramfs_list.sh
ramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \
			$(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)
ramfs-args  := \
        $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
        $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))

# .initramfs_data.cpio.d is used to identify all files included
# in initramfs and to detect if any files are added/removed.
# Removed files are identified by directory timestamp being updated
# The dependency list is generated by gen_initramfs.sh -l
ifneq ($(wildcard $(obj)/.initramfs_data.cpio.d),)
	include $(obj)/.initramfs_data.cpio.d
endif

quiet_cmd_initfs = GEN     $@
      cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)

targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 \
	initramfs_data.cpio.lzma initramfs_data.cpio.xz \
	initramfs_data.cpio.lzo initramfs_data.cpio.lz4 \
	initramfs_data.cpio
# do not try to update files included in initramfs
$(deps_initramfs): ;

$(deps_initramfs): klibcdirs
# We rebuild initramfs_data.cpio if:
# 1) Any included file is newer then initramfs_data.cpio
# 2) There are changes in which files are included (added or deleted)
# 3) If gen_init_cpio are newer than initramfs_data.cpio
# 4) arguments to gen_initramfs.sh changes
$(obj)/initramfs_data.cpio$(suffix_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
	$(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.d
	$(call if_changed,initfs)
Commit	Line	Data
	1	#
	2	# kbuild file for usr/ - including initramfs image
	3	#
	4
	5	klibcdirs:;
	6	PHONY += klibcdirs
	7
	8	suffix_y = $(subst $\",,$(CONFIG_INITRAMFS_COMPRESSION))
	9	AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)"
	10
	11	# Generate builtin.o based on initramfs_data.o
	12	obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
	13
	14	# initramfs_data.o contains the compressed initramfs_data.cpio image.
	15	# The image is included using .incbin, a dependency which is not
	16	# tracked automatically.
	17	$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE
	18
	19	#####
	20	# Generate the initramfs cpio archive
	21
	22	hostprogs-y := gen_init_cpio
	23	initramfs := $(CONFIG_SHELL) $(srctree)/scripts/gen_initramfs_list.sh
	24	ramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \
	25	$(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)
	26	ramfs-args := \
	27	$(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
	28	$(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))
	29
	30	# .initramfs_data.cpio.d is used to identify all files included
	31	# in initramfs and to detect if any files are added/removed.
	32	# Removed files are identified by directory timestamp being updated
	33	# The dependency list is generated by gen_initramfs.sh -l
	34	ifneq ($(wildcard $(obj)/.initramfs_data.cpio.d),)
	35	include $(obj)/.initramfs_data.cpio.d
	36	endif
	37
	38	quiet_cmd_initfs = GEN $@
	39	cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
	40
	41	targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 \
	42	initramfs_data.cpio.lzma initramfs_data.cpio.xz \
	43	initramfs_data.cpio.lzo initramfs_data.cpio.lz4 \
	44	initramfs_data.cpio
	45	# do not try to update files included in initramfs
	46	$(deps_initramfs): ;
	47
	48	$(deps_initramfs): klibcdirs
	49	# We rebuild initramfs_data.cpio if:
	50	# 1) Any included file is newer then initramfs_data.cpio
	51	# 2) There are changes in which files are included (added or deleted)
	52	# 3) If gen_init_cpio are newer than initramfs_data.cpio
	53	# 4) arguments to gen_initramfs.sh changes
	54	$(obj)/initramfs_data.cpio$(suffix_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
	55	$(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.d
	56	$(call if_changed,initfs)