68 lines
2.4 KiB
Makefile
68 lines
2.4 KiB
Makefile
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#
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# Macro that builds the needed Makefile target to create a root
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# filesystem image.
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#
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# The following variable must be defined before calling this macro
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#
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# ROOTFS_$(FSTYPE)_CMD, the command that generates the root
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# filesystem image. A single command is allowed. The filename of the
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# filesystem image that it must generate is $$@.
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#
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# The following variables can optionaly be defined
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#
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# ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to
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# build the root filesystem (usually host tools)
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#
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# ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before
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# generating the filesystem image
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#
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# ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after
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# generating the filesystem image
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#
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# In terms of configuration option, this macro assumes that the
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# BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable
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# the generation of a filesystem image of a particular type. If
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# configura options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP,
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# BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or
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# BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the
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# macro will automatically generate a compressed filesystem image.
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FAKEROOT_SCRIPT = $(BUILD_DIR)/_fakeroot.fs
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define ROOTFS_TARGET_INTERNAL
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$(IMAGE).$(1): $(ROOTFS_$(2)_DEPENDENCIES) host-fakeroot makedevs $(if $(BR2_TARGET_ROOTFS_$(2)_LZMA),host-lzma)
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@$(call MESSAGE,"Generating root filesystem image $(IMAGE).$(1)")
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$(foreach hook,$(ROOTFS_$(2)_PRE_GEN_HOOKS),$(call $(hook))$(sep))
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rm -f $(FAKEROOT_SCRIPT)
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touch $(BUILD_DIR)/.fakeroot.00000
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cat $(BUILD_DIR)/.fakeroot* > $(FAKEROOT_SCRIPT)
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echo "chown -R 0:0 $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
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ifneq ($(TARGET_DEVICE_TABLE),)
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echo "$(HOST_DIR)/usr/bin/makedevs -d $(TARGET_DEVICE_TABLE) $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
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endif
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echo "$(ROOTFS_$(2)_CMD)" >> $(FAKEROOT_SCRIPT)
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chmod a+x $(FAKEROOT_SCRIPT)
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$(HOST_DIR)/usr/bin/fakeroot -- $(FAKEROOT_SCRIPT)
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-@rm -f $(FAKEROOT_SCRIPT)
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$(foreach hook,$(ROOTFS_$(2)_POST_GEN_HOOKS),$(call $(hook))$(sep))
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y)
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gzip -9 -c $$@ > $$@.gz
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y)
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bzip2 -9 -c $$@ > $$@.bz2
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endif
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y)
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$(LZMA) -9 -c $$@ > $$@.lzma
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endif
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$(1)-root: $(IMAGE).$(1)
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y)
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TARGETS += $(1)-root
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endif
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endef
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define ROOTFS_TARGET
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$(call ROOTFS_TARGET_INTERNAL,$(1),$(call UPPERCASE,$(1)))
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endef
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