# DO NOT EDIT. This file is generated from Config.src # # For a description of the syntax of this configuration file, # see docs/Kconfig-language.txt. # menu "Archival Utilities" config FEATURE_SEAMLESS_XZ bool "Make tar, rpm, modprobe etc understand .xz data" default y config FEATURE_SEAMLESS_LZMA bool "Make tar, rpm, modprobe etc understand .lzma data" default y config FEATURE_SEAMLESS_BZ2 bool "Make tar, rpm, modprobe etc understand .bz2 data" default y config FEATURE_SEAMLESS_GZ bool "Make tar, rpm, modprobe etc understand .gz data" default y config FEATURE_SEAMLESS_Z bool "Make tar, rpm, modprobe etc understand .Z data" default n # it is ancient config AR bool "ar (9.5 kb)" 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. In practice, it is used exclusively for object module archives used by compilers. Unless you have a specific application which requires ar, you should probably say N here: most compilers come with their own ar utility. config FEATURE_AR_LONG_FILENAMES bool "Support 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 UNCOMPRESS bool "uncompress (7.1 kb)" default n # ancient help uncompress is used to decompress archives created by compress. Not much used anymore, replaced by gzip/gunzip. config GUNZIP bool "gunzip (11 kb)" default y select FEATURE_GZIP_DECOMPRESS 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 ZCAT bool "zcat (24 kb)" default y select FEATURE_GZIP_DECOMPRESS help Alias to "gunzip -c". config FEATURE_GUNZIP_LONG_OPTIONS bool "Enable long options" default y depends on (GUNZIP || ZCAT) && LONG_OPTS config BUNZIP2 bool "bunzip2 (8.7 kb)" default y select FEATURE_BZIP2_DECOMPRESS 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 BZCAT bool "bzcat (8.7 kb)" default y select FEATURE_BZIP2_DECOMPRESS help Alias to "bunzip2 -c". config UNLZMA bool "unlzma (7.5 kb)" 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. config LZCAT bool "lzcat (7.5 kb)" default y help Alias to "unlzma -c". config LZMA bool "lzma -d" default y 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 (13 kb)" default y help unxz is a unlzma successor. config XZCAT bool "xzcat (13 kb)" default y help Alias to "unxz -c". config XZ bool "xz -d" default y 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 BZIP2 bool "bzip2 (16 kb)" 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 BZIP2_SMALL int "Trade bytes for speed (0:fast, 9:small)" default 8 # all "fast or small" options default to small range 0 9 depends on BZIP2 help Trade code size versus speed. Approximate values with gcc-6.3.0 "bzip -9" compressing linux-4.15.tar were: value time (sec) code size (386) 9 (smallest) 70.11 7687 8 67.93 8091 7 67.88 8405 6 67.78 8624 5 67.05 9427 4-0 (fastest) 64.14 12083 config FEATURE_BZIP2_DECOMPRESS bool "Enable decompression" default y depends on BZIP2 || BUNZIP2 || BZCAT help Enable -d (--decompress) and -t (--test) options for bzip2. This will be automatically selected if bunzip2 or bzcat is enabled. config CPIO bool "cpio (15 kb)" 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. Unless you have a specific application which requires cpio, you should probably say N here. config FEATURE_CPIO_O bool "Support 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 passthrough mode" default y depends on FEATURE_CPIO_O help Passthrough mode. Rarely used. config FEATURE_CPIO_IGNORE_DEVNO bool "Support --ignore-devno like GNU cpio" default y depends on FEATURE_CPIO_O && LONG_OPTS help Optionally ignore device numbers when creating archives. config FEATURE_CPIO_RENUMBER_INODES bool "Support --renumber-inodes like GNU cpio" default y depends on FEATURE_CPIO_O && LONG_OPTS help Optionally renumber inodes when creating archives. config DPKG bool "dpkg (43 kb)" default y 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 (30 kb)" default y 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 GZIP bool "gzip (17 kb)" 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 config GZIP_FAST int "Trade memory for speed (0:small,slow - 2:fast,big)" default 0 range 0 2 depends on GZIP help Enable big memory options for gzip. 0: small buffers, small hash-tables 1: larger buffers, larger hash-tables 2: larger buffers, largest hash-tables Larger models may give slightly better compression config FEATURE_GZIP_LEVELS bool "Enable compression levels" default n depends on GZIP help Enable support for compression levels 4-9. The default level is 6. If levels 1-3 are specified, 4 is used. If this option is not selected, -N options are ignored and -6 is used. config FEATURE_GZIP_DECOMPRESS bool "Enable decompression" default y depends on GZIP || GUNZIP || ZCAT help Enable -d (--decompress) and -t (--test) options for gzip. This will be automatically selected if gunzip or zcat is enabled. config LZOP bool "lzop (12 kb)" default y help Lzop compression/decompresion. config UNLZOP bool "unlzop (13 kb)" default n # INCOMPAT: upstream lzop does not provide such tool help Lzop decompresion. config LZOPCAT bool "lzopcat (13 kb)" default n # INCOMPAT: upstream lzop does not provide such tool help Alias to "lzop -dc". config LZOP_COMPR_HIGH bool "lzop compression levels 7,8,9 (not very useful)" default n depends on LZOP || UNLZOP || LZOPCAT 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 RPM bool "rpm (32 kb)" default y help Mini RPM applet - queries and extracts RPM packages. config RPM2CPIO bool "rpm2cpio (21 kb)" default y help Converts a RPM file into a CPIO archive. config TAR bool "tar (39 kb)" 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_LONG_OPTIONS bool "Enable long options" default y depends on TAR && LONG_OPTS config FEATURE_TAR_CREATE bool "Enable -c (archive creation)" default y depends on TAR 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 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 GNU tar extensions (long filenames)" default y depends on TAR || DPKG config FEATURE_TAR_TO_COMMAND bool "Support writing to an external program (--to-command)" 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 Enable 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) GNU option" default y depends on TAR config FEATURE_TAR_SELINUX bool "Support 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 UNZIP bool "unzip (26 kb)" 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. config FEATURE_UNZIP_CDF bool "Read and use Central Directory data" default y depends on UNZIP help If you know that you only need to deal with simple ZIP files without deleted/updated files, SFX archives etc, you can reduce code size by unselecting this option. To support less trivial ZIPs, say Y. config FEATURE_UNZIP_BZIP2 bool "Support compression method 12 (bzip2)" default y depends on FEATURE_UNZIP_CDF && DESKTOP config FEATURE_UNZIP_LZMA bool "Support compression method 14 (lzma)" default y depends on FEATURE_UNZIP_CDF && DESKTOP config FEATURE_UNZIP_XZ bool "Support compression method 95 (xz)" default y depends on FEATURE_UNZIP_CDF && DESKTOP config FEATURE_LZMA_FAST bool "Optimize lzma for speed" default n depends on UNLZMA || LZCAT || LZMA || FEATURE_SEAMLESS_LZMA help This option reduces decompression time by about 25% at the cost of a 1K bigger binary. endmenu