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