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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 $$@.
+#
+# The following variables can optionaly be defined
+#
+# ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to
+# build the root filesystem (usually host tools)
+#
+# ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before
+# generating the filesystem image
+#
+# ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after
+# generating the filesystem image
+#
+# In terms of configuration option, this macro assumes that the
+# BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable
+# the generation of a filesystem image of a particular type. If
+# configura options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP,
+# BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or
+# BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the
+# macro will automatically generate a compressed filesystem image.
+
+FAKEROOT_SCRIPT = $(BUILD_DIR)/_fakeroot.fs
+
+define ROOTFS_TARGET_INTERNAL
+
+$(BINARIES_DIR)/rootfs.$(1): $(ROOTFS_$(2)_DEPENDENCIES) host-fakeroot makedevs $(if $(BR2_TARGET_ROOTFS_$(2)_LZMA),host-lzma)
+ @$(call MESSAGE,"Generating root filesystem image rootfs.$(1)")
+ $(foreach hook,$(ROOTFS_$(2)_PRE_GEN_HOOKS),$(call $(hook))$(sep))
+ rm -f $(FAKEROOT_SCRIPT)
+ touch $(BUILD_DIR)/.fakeroot.00000
+ cat $(BUILD_DIR)/.fakeroot* > $(FAKEROOT_SCRIPT)
+ echo "chown -R 0:0 $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
+ifneq ($(TARGET_DEVICE_TABLE),)
+ echo "$(HOST_DIR)/usr/bin/makedevs -d $(TARGET_DEVICE_TABLE) $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
+endif
+ echo "$(ROOTFS_$(2)_CMD)" >> $(FAKEROOT_SCRIPT)
+ chmod a+x $(FAKEROOT_SCRIPT)
+ $(HOST_DIR)/usr/bin/fakeroot -- $(FAKEROOT_SCRIPT)
+ -@rm -f $(FAKEROOT_SCRIPT)
+ $(foreach hook,$(ROOTFS_$(2)_POST_GEN_HOOKS),$(call $(hook))$(sep))
+ifeq ($$(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
+
+$(1)-root: $(BINARIES_DIR)/rootfs.$(1)
+
+ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y)
+TARGETS += $(1)-root
+endif
+endef
+
+define ROOTFS_TARGET
+$(call ROOTFS_TARGET_INTERNAL,$(1),$(call UPPERCASE,$(1)))
+endef
+
+include fs/*/*.mk