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- #
- # Macro that builds the needed Makefile target to create a root
- # filesystem image.
- #
- # The following variable must be defined before calling this macro
- #
- # ROOTFS_$(FSTYPE)_CMD, the command that generates the root
- # filesystem image. A single command is allowed. The filename of the
- # filesystem image that it must generate is $$@.
- #
- # The following variables can optionaly be defined
- #
- # ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to
- # build the root filesystem (usually host tools)
- #
- # ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before
- # generating the filesystem image
- #
- # ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after
- # generating the filesystem image
- #
- # ROOTFS_$(FSTYPE)_POST_TARGETS, the list of targets that should be
- # run after running the main filesystem target. This is useful for
- # initramfs, to rebuild the kernel once the initramfs is generated.
- #
- # In terms of configuration option, this macro assumes that the
- # BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable
- # the generation of a filesystem image of a particular type. If
- # configura options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP,
- # BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or
- # BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the
- # macro will automatically generate a compressed filesystem image.
- FAKEROOT_SCRIPT = $(BUILD_DIR)/_fakeroot.fs
- FULL_DEVICE_TABLE = $(BUILD_DIR)/_device_table.txt
- ROOTFS_DEVICE_TABLES = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE) \
- $(BR2_ROOTFS_STATIC_DEVICE_TABLE))
- USERS_TABLE = $(BUILD_DIR)/_users_table.txt
- define ROOTFS_TARGET_INTERNAL
- # extra deps
- ROOTFS_$(2)_DEPENDENCIES += host-fakeroot host-makedevs $$(if $$(BR2_TARGET_ROOTFS_$(2)_LZMA),host-lzma) $$(if $$(BR2_TARGET_ROOTFS_$(2)_LZO),host-lzop) $$(if $$(BR2_TARGET_ROOTFS_$(2)_XZ),host-xz)
- $$(BINARIES_DIR)/rootfs.$(1): $$(ROOTFS_$(2)_DEPENDENCIES)
- @$$(call MESSAGE,"Generating root filesystem image rootfs.$(1)")
- $$(foreach hook,$$(ROOTFS_$(2)_PRE_GEN_HOOKS),$$(call $$(hook))$$(sep))
- rm -f $$(FAKEROOT_SCRIPT)
- rm -f $$(TARGET_DIR_WARNING_FILE)
- echo "chown -R 0:0 $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
- ifneq ($$(ROOTFS_DEVICE_TABLES),)
- cat $$(ROOTFS_DEVICE_TABLES) > $$(FULL_DEVICE_TABLE)
- ifeq ($$(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)
- printf '$$(subst $$(sep),\n,$$(PACKAGES_DEVICES_TABLE))' >> $$(FULL_DEVICE_TABLE)
- endif
- printf '$$(subst $$(sep),\n,$$(PACKAGES_PERMISSIONS_TABLE))' >> $$(FULL_DEVICE_TABLE)
- echo "$$(HOST_DIR)/usr/bin/makedevs -d $$(FULL_DEVICE_TABLE) $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
- endif
- printf '$(subst $(sep),\n,$(PACKAGES_USERS))' > $(USERS_TABLE)
- $(TOPDIR)/support/scripts/mkusers $(USERS_TABLE) $(TARGET_DIR) >> $(FAKEROOT_SCRIPT)
- echo "$$(ROOTFS_$(2)_CMD)" >> $$(FAKEROOT_SCRIPT)
- chmod a+x $$(FAKEROOT_SCRIPT)
- $$(HOST_DIR)/usr/bin/fakeroot -- $$(FAKEROOT_SCRIPT)
- cp support/misc/target-dir-warning.txt $$(TARGET_DIR_WARNING_FILE)
- -@rm -f $$(FAKEROOT_SCRIPT) $$(FULL_DEVICE_TABLE)
- $$(foreach hook,$$(ROOTFS_$(2)_POST_GEN_HOOKS),$$(call $$(hook))$$(sep))
- ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y)
- gzip -9 -c $$@ > $$@.gz
- endif
- ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y)
- bzip2 -9 -c $$@ > $$@.bz2
- endif
- ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y)
- $$(LZMA) -9 -c $$@ > $$@.lzma
- endif
- ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZO),y)
- $$(LZOP) -9 -c $$@ > $$@.lzo
- endif
- ifeq ($$(BR2_TARGET_ROOTFS_$(2)_XZ),y)
- $(XZ) -9 -C crc32 -c $$@ > $$@.xz
- endif
- rootfs-$(1)-show-depends:
- @echo $$(ROOTFS_$(2)_DEPENDENCIES)
- rootfs-$(1): $$(BINARIES_DIR)/rootfs.$(1) $$(ROOTFS_$(2)_POST_TARGETS)
- ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y)
- TARGETS += rootfs-$(1)
- endif
- endef
- define ROOTFS_TARGET
- $(call ROOTFS_TARGET_INTERNAL,$(1),$(call UPPERCASE,$(1)))
- endef
- include $(sort $(wildcard fs/*/*.mk))
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