Move all filesystem generation code to fs/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

fs/tar/Config.in

@@ -0,0 +1,47 @@
+config BR2_TARGET_ROOTFS_TAR
+	bool "tar the root filesystem"
+	help
+	  Build a tar archive of the root filesystem
+
+choice
+	prompt "Compression method"
+	default BR2_TARGET_ROOTFS_TAR_NONE
+	depends on BR2_TARGET_ROOTFS_TAR
+	help
+	  Select compressor for tar archive of the root filesystem
+
+config BR2_TARGET_ROOTFS_TAR_NONE
+	bool "no compression"
+	help
+	 Do not compress the tarball.
+
+config BR2_TARGET_ROOTFS_TAR_GZIP
+	bool "gzip"
+	help
+	 Do compress the tarball with gzip.
+	 Note that you either have to have gzip installed on your host
+	 or select to build a gzip for your host. See the packages submenu.
+
+config BR2_TARGET_ROOTFS_TAR_BZIP2
+	bool "bzip2"
+	help
+	 Do compress the tarball with bzip2.
+	 Note that you either have to have bzip2 installed on your host
+	 or select to build a bzip2 for your host. See the packages submenu.
+
+config BR2_TARGET_ROOTFS_TAR_LZMA
+	bool "lzma"
+	help
+	 Do compress the tarball with lzma.
+	 Note that you either have to have lzma installed on your host
+	 or select to build a lzma for your host. See the packages submenu.
+
+endchoice
+
+config BR2_TARGET_ROOTFS_TAR_OPTIONS
+	string "other random options to pass to tar"
+	depends on BR2_TARGET_ROOTFS_TAR
+	default ""
+	help
+	  Any other flags you want to pass to tar
+	  Refer to tar --help for details

fs/tar/tarroot.mk

@@ -0,0 +1,13 @@
+#############################################################
+#
+# tar to archive target filesystem
+#
+#############################################################
+
+TAR_OPTS:=$(BR2_TARGET_ROOTFS_TAR_OPTIONS)
+
+define ROOTFS_TAR_CMD
+ tar -c$(TAR_OPTS)f $$@ -C $(TARGET_DIR) .
+endef
+
+$(eval $(call ROOTFS_TARGET,tar))