| # |
| # For a description of the syntax of this configuration file, |
| # see scripts/kbuild/config-language.txt. |
| # |
| |
| menu "Archival Utilities" |
| |
| INSERT |
| |
| config FEATURE_SEAMLESS_XZ |
| bool "Make tar, rpm, modprobe etc understand .xz data" |
| default y |
| help |
| Make tar, rpm, modprobe etc understand .xz data. |
| |
| config FEATURE_SEAMLESS_LZMA |
| bool "Make tar, rpm, modprobe etc understand .lzma data" |
| default y |
| help |
| Make tar, rpm, modprobe etc understand .lzma data. |
| |
| config FEATURE_SEAMLESS_BZ2 |
| bool "Make tar, rpm, modprobe etc understand .bz2 data" |
| default y |
| help |
| Make tar, rpm, modprobe etc understand .bz2 data. |
| |
| config FEATURE_SEAMLESS_GZ |
| bool "Make tar, rpm, modprobe etc understand .gz data" |
| default y |
| help |
| Make tar, rpm, modprobe etc understand .gz data. |
| |
| config FEATURE_SEAMLESS_Z |
| bool "Make tar and gunzip understand .Z data" |
| default n |
| help |
| Make tar and gunzip understand .Z data. |
| |
| config AR |
| bool "ar" |
| default n # needs to be improved to be able to replace binutils ar |
| help |
| ar is an archival utility program used to create, modify, and |
| extract contents from archives. An archive is a single file holding |
| a collection of other files in a structure that makes it possible to |
| retrieve the original individual files (called archive members). |
| The original files' contents, mode (permissions), timestamp, owner, |
| and group are preserved in the archive, and can be restored on |
| extraction. |
| |
| The stored filename is limited to 15 characters. (for more information |
| see long filename support). |
| ar has 60 bytes of overheads for every stored file. |
| |
| This implementation of ar can extract archives, it cannot create or |
| modify them. |
| On an x86 system, the ar applet adds about 1K. |
| |
| Unless you have a specific application which requires ar, you should |
| probably say N here. |
| |
| config FEATURE_AR_LONG_FILENAMES |
| bool "Support for long filenames (not needed for debs)" |
| default y |
| depends on AR |
| help |
| By default the ar format can only store the first 15 characters |
| of the filename, this option removes that limitation. |
| It supports the GNU ar long filename method which moves multiple long |
| filenames into a the data section of a new ar entry. |
| |
| config FEATURE_AR_CREATE |
| bool "Support archive creation" |
| default y |
| depends on AR |
| help |
| This enables archive creation (-c and -r) with busybox ar. |
| |
| config BUNZIP2 |
| bool "bunzip2" |
| default y |
| help |
| bunzip2 is a compression utility using the Burrows-Wheeler block |
| sorting text compression algorithm, and Huffman coding. Compression |
| is generally considerably better than that achieved by more |
| conventional LZ77/LZ78-based compressors, and approaches the |
| performance of the PPM family of statistical compressors. |
| |
| Unless you have a specific application which requires bunzip2, you |
| should probably say N here. |
| |
| config BZIP2 |
| bool "bzip2" |
| default y |
| help |
| bzip2 is a compression utility using the Burrows-Wheeler block |
| sorting text compression algorithm, and Huffman coding. Compression |
| is generally considerably better than that achieved by more |
| conventional LZ77/LZ78-based compressors, and approaches the |
| performance of the PPM family of statistical compressors. |
| |
| Unless you have a specific application which requires bzip2, you |
| should probably say N here. |
| |
| config CPIO |
| bool "cpio" |
| default y |
| help |
| cpio is an archival utility program used to create, modify, and |
| extract contents from archives. |
| cpio has 110 bytes of overheads for every stored file. |
| |
| This implementation of cpio can extract cpio archives created in the |
| "newc" or "crc" format, it cannot create or modify them. |
| |
| Unless you have a specific application which requires cpio, you |
| should probably say N here. |
| |
| config FEATURE_CPIO_O |
| bool "Support for archive creation" |
| default y |
| depends on CPIO |
| help |
| This implementation of cpio can create cpio archives in the "newc" |
| format only. |
| |
| config FEATURE_CPIO_P |
| bool "Support for passthrough mode" |
| default y |
| depends on FEATURE_CPIO_O |
| help |
| Passthrough mode. Rarely used. |
| |
| config DPKG |
| bool "dpkg" |
| default n |
| select FEATURE_SEAMLESS_GZ |
| help |
| dpkg is a medium-level tool to install, build, remove and manage |
| Debian packages. |
| |
| This implementation of dpkg has a number of limitations, |
| you should use the official dpkg if possible. |
| |
| config DPKG_DEB |
| bool "dpkg_deb" |
| default n |
| select FEATURE_SEAMLESS_GZ |
| help |
| dpkg-deb unpacks and provides information about Debian archives. |
| |
| This implementation of dpkg-deb cannot pack archives. |
| |
| Unless you have a specific application which requires dpkg-deb, |
| say N here. |
| |
| config FEATURE_DPKG_DEB_EXTRACT_ONLY |
| bool "Extract only (-x)" |
| default n |
| depends on DPKG_DEB |
| help |
| This reduces dpkg-deb to the equivalent of |
| "ar -p <deb> data.tar.gz | tar -zx". However it saves space as none |
| of the extra dpkg-deb, ar or tar options are needed, they are linked |
| to internally. |
| |
| config GUNZIP |
| bool "gunzip" |
| default y |
| help |
| gunzip is used to decompress archives created by gzip. |
| You can use the `-t' option to test the integrity of |
| an archive, without decompressing it. |
| |
| config GZIP |
| bool "gzip" |
| default y |
| help |
| gzip is used to compress files. |
| It's probably the most widely used UNIX compression program. |
| |
| config FEATURE_GZIP_LONG_OPTIONS |
| bool "Enable long options" |
| default y |
| depends on GZIP && LONG_OPTS |
| help |
| Enable use of long options, increases size by about 106 Bytes |
| |
| config LZOP |
| bool "lzop" |
| default y |
| help |
| Lzop compression/decompresion. |
| |
| config LZOP_COMPR_HIGH |
| bool "lzop compression levels 7,8,9 (not very useful)" |
| default n |
| depends on LZOP |
| help |
| High levels (7,8,9) of lzop compression. These levels |
| are actually slower than gzip at equivalent compression ratios |
| and take up 3.2K of code. |
| |
| config RPM2CPIO |
| bool "rpm2cpio" |
| default y |
| help |
| Converts a RPM file into a CPIO archive. |
| |
| config RPM |
| bool "rpm" |
| default y |
| help |
| Mini RPM applet - queries and extracts RPM packages. |
| |
| config TAR |
| bool "tar" |
| default y |
| help |
| tar is an archiving program. It's commonly used with gzip to |
| create compressed archives. It's probably the most widely used |
| UNIX archive program. |
| |
| config FEATURE_TAR_CREATE |
| bool "Enable archive creation" |
| default y |
| depends on TAR |
| help |
| If you enable this option you'll be able to create |
| tar archives using the `-c' option. |
| |
| config FEATURE_TAR_AUTODETECT |
| bool "Autodetect compressed tarballs" |
| default y |
| depends on TAR && (FEATURE_SEAMLESS_Z || FEATURE_SEAMLESS_GZ || FEATURE_SEAMLESS_BZ2 || FEATURE_SEAMLESS_LZMA || FEATURE_SEAMLESS_XZ) |
| help |
| With this option tar can automatically detect compressed |
| tarballs. Currently it works only on files (not pipes etc). |
| |
| config FEATURE_TAR_FROM |
| bool "Enable -X (exclude from) and -T (include from) options)" |
| default y |
| depends on TAR |
| help |
| If you enable this option you'll be able to specify |
| a list of files to include or exclude from an archive. |
| |
| config FEATURE_TAR_OLDGNU_COMPATIBILITY |
| bool "Support for old tar header format" |
| default y |
| depends on TAR || DPKG |
| help |
| This option is required to unpack archives created in |
| the old GNU format; help to kill this old format by |
| repacking your ancient archives with the new format. |
| |
| config FEATURE_TAR_OLDSUN_COMPATIBILITY |
| bool "Enable untarring of tarballs with checksums produced by buggy Sun tar" |
| default y |
| depends on TAR || DPKG |
| help |
| This option is required to unpack archives created by some old |
| version of Sun's tar (it was calculating checksum using signed |
| arithmetic). It is said to be fixed in newer Sun tar, but "old" |
| tarballs still exist. |
| |
| config FEATURE_TAR_GNU_EXTENSIONS |
| bool "Support for GNU tar extensions (long filenames)" |
| default y |
| depends on TAR || DPKG |
| help |
| With this option busybox supports GNU long filenames and |
| linknames. |
| |
| config FEATURE_TAR_LONG_OPTIONS |
| bool "Enable long options" |
| default y |
| depends on TAR && LONG_OPTS |
| help |
| Enable use of long options, increases size by about 400 Bytes |
| |
| config FEATURE_TAR_TO_COMMAND |
| bool "Support for writing to an external program" |
| default y |
| depends on TAR && FEATURE_TAR_LONG_OPTIONS |
| help |
| If you enable this option you'll be able to instruct tar to send |
| the contents of each extracted file to the standard input of an |
| external program. |
| |
| config FEATURE_TAR_UNAME_GNAME |
| bool "Enable use of user and group names" |
| default y |
| depends on TAR |
| help |
| Enables use of user and group names in tar. This affects contents |
| listings (-t) and preserving permissions when unpacking (-p). |
| +200 bytes. |
| |
| config FEATURE_TAR_NOPRESERVE_TIME |
| bool "Enable -m (do not preserve time) option" |
| default y |
| depends on TAR |
| help |
| With this option busybox supports GNU tar -m |
| (do not preserve time) option. |
| |
| config FEATURE_TAR_SELINUX |
| bool "Support for extracting SELinux labels" |
| default n |
| depends on TAR && SELINUX |
| help |
| With this option busybox supports restoring SELinux labels |
| when extracting files from tar archives. |
| |
| config UNCOMPRESS |
| bool "uncompress" |
| default n |
| help |
| uncompress is used to decompress archives created by compress. |
| Not much used anymore, replaced by gzip/gunzip. |
| |
| config UNLZMA |
| bool "unlzma" |
| default y |
| help |
| unlzma is a compression utility using the Lempel-Ziv-Markov chain |
| compression algorithm, and range coding. Compression |
| is generally considerably better than that achieved by the bzip2 |
| compressors. |
| |
| The BusyBox unlzma applet is limited to de-compression only. |
| On an x86 system, this applet adds about 4K. |
| |
| Unless you have a specific application which requires unlzma, you |
| should probably say N here. |
| |
| config FEATURE_LZMA_FAST |
| bool "Optimize unlzma for speed" |
| default y |
| depends on UNLZMA |
| help |
| This option reduces decompression time by about 25% at the cost of |
| a 1K bigger binary. |
| |
| config LZMA |
| bool "Provide lzma alias which supports only unpacking" |
| default y |
| depends on UNLZMA |
| help |
| Enable this option if you want commands like "lzma -d" to work. |
| IOW: you'll get lzma applet, but it will always require -d option. |
| |
| config UNXZ |
| bool "unxz" |
| default y |
| help |
| unxz is a unlzma successor. |
| |
| config XZ |
| bool "Provide xz alias which supports only unpacking" |
| default y |
| depends on UNXZ |
| help |
| Enable this option if you want commands like "xz -d" to work. |
| IOW: you'll get xz applet, but it will always require -d option. |
| |
| config UNZIP |
| bool "unzip" |
| default y |
| help |
| unzip will list or extract files from a ZIP archive, |
| commonly found on DOS/WIN systems. The default behavior |
| (with no options) is to extract the archive into the |
| current directory. Use the `-d' option to extract to a |
| directory of your choice. |
| |
| endmenu |
