| # |
| # For a description of the syntax of this configuration file, |
| # see scripts/kbuild/config-language.txt. |
| # |
| |
| menu "Archival Utilities" |
| |
| config AR |
| bool "ar" |
| default n |
| 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 "Enable support for long filenames (not need for debs)" |
| default n |
| 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 BUNZIP2 |
| bool "bunzip2" |
| default n |
| 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. |
| |
| The BusyBox bunzip2 applet is limited to de-compression only. |
| On an x86 system, this applet adds about 11K. |
| |
| Unless you have a specific application which requires bunzip2, you |
| should probably say N here. |
| |
| config CPIO |
| bool "cpio" |
| default n |
| 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 DPKG |
| bool "dpkg" |
| default n |
| 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 |
| help |
| dpkg-deb packs, 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, you should |
| probably 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 n |
| 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 FEATURE_GUNZIP_UNCOMPRESS |
| bool "Uncompress support" |
| default n |
| depends on GUNZIP |
| help |
| Enable if you want gunzip to have the ability to decompress |
| archives created by the program compress (not much |
| used anymore). |
| |
| config GZIP |
| bool "gzip" |
| default n |
| help |
| gzip is used to compress files. |
| It's probably the most widely used UNIX compression program. |
| |
| config RPM2CPIO |
| bool "rpm2cpio" |
| default n |
| help |
| Converts an RPM file into a CPIO archive. |
| |
| config RPM |
| bool "rpm" |
| default n |
| help |
| Mini RPM applet - queries and extracts |
| |
| config TAR |
| bool "tar" |
| default n |
| 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_BZIP2 |
| bool "Enable -j option to handle .tar.bz2 files" |
| default n |
| depends on TAR |
| help |
| If you enable this option you'll be able to extract |
| archives compressed with bzip2. |
| |
| config FEATURE_TAR_LZMA |
| bool "Enable -a option to handle .tar.lzma files" |
| default n |
| depends on TAR |
| help |
| If you enable this option you'll be able to extract |
| archives compressed with lzma. |
| |
| config FEATURE_TAR_FROM |
| bool "Enable -X (exclude from) and -T (include from) options)" |
| default n |
| 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_GZIP |
| bool "Enable -z option" |
| default y |
| depends on TAR |
| help |
| If you enable this option tar will be able to call gzip, |
| when creating or extracting tar gziped archives. |
| |
| config FEATURE_TAR_COMPRESS |
| bool "Enable -Z option" |
| default n |
| depends on TAR |
| help |
| If you enable this option tar will be able to call uncompress, |
| when extracting .tar.Z archives. |
| |
| config FEATURE_TAR_OLDGNU_COMPATIBILITY |
| bool "Enable support for old tar header format" |
| default N |
| depends on TAR |
| 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_GNU_EXTENSIONS |
| bool "Enable support for some GNU tar extensions" |
| default y |
| depends on TAR |
| help |
| With this option busybox supports GNU long filenames and |
| linknames. |
| |
| config FEATURE_TAR_LONG_OPTIONS |
| bool "Enable long options" |
| default n |
| depends on TAR && GETOPT_LONG |
| help |
| Enable use of long options, increases size by about 400 Bytes |
| |
| 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 n |
| 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 "Optimze unlzma for speed" |
| default n |
| depends on UNLZMA |
| help |
| This option reduces decompression time by about 33% at the cost of |
| a 2K bigger binary. |
| |
| config UNZIP |
| bool "unzip" |
| default n |
| 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. |
| |
| comment "Common options for cpio and tar" |
| depends on CPIO || TAR |
| |
| config FEATURE_UNARCHIVE_TAPE |
| bool "Enable tape drive support" |
| default n |
| depends on CPIO || TAR |
| help |
| I don't think this is needed anymore. |
| |
| comment "Common options for dpkg and dpkg_deb" |
| depends on DPKG || DPKG_DEB |
| |
| config FEATURE_DEB_TAR_GZ |
| bool "gzip debian packages (normal)" |
| default y if DPKG || DPKG_DEB |
| depends on DPKG || DPKG_DEB |
| help |
| This is the default compression method inside the debian ar file. |
| |
| If you want compatibility with standard .deb's you should say yes here. |
| |
| config FEATURE_DEB_TAR_BZ2 |
| bool "bzip2 debian packages" |
| default n |
| depends on DPKG || DPKG_DEB |
| help |
| This allows dpkg and dpkg-deb to extract deb's that are compressed internally |
| with bzip2 instead of gzip. |
| |
| You only want this if you are creating your own custom debian packages that |
| use an internal control.tar.bz2 or data.tar.bz2. |
| |
| config FEATURE_DEB_TAR_LZMA |
| bool "lzma debian packages" |
| default n |
| depends on DPKG || DPKG_DEB |
| help |
| This allows dpkg and dpkg-deb to extract deb's that are compressed |
| internally with lzma instead of gzip. |
| |
| You only want this if you are creating your own custom debian |
| packages that use an internal control.tar.lzma or data.tar.lzma. |
| |
| endmenu |