2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 menu "Archival Utilities"
8 config BUSYBOX_CONFIG_AR
12 ar is an archival utility program used to create, modify, and
13 extract contents from archives. An archive is a single file holding
14 a collection of other files in a structure that makes it possible to
15 retrieve the original individual files (called archive members).
16 The original files' contents, mode (permissions), timestamp, owner,
17 and group are preserved in the archive, and can be restored on
20 The stored filename is limited to 15 characters. (for more information
21 see long filename support).
22 ar has 60 bytes of overheads for every stored file.
24 This implementation of ar can extract archives, it cannot create or
26 On an x86 system, the ar applet adds about 1K.
28 Unless you have a specific application which requires ar, you should
31 config BUSYBOX_CONFIG_FEATURE_AR_LONG_FILENAMES
32 bool "Support for long filenames (not need for debs)"
34 depends on BUSYBOX_CONFIG_AR
36 By default the ar format can only store the first 15 characters of the
37 filename, this option removes that limitation.
38 It supports the GNU ar long filename method which moves multiple long
39 filenames into a the data section of a new ar entry.
41 config BUSYBOX_CONFIG_BUNZIP2
45 bunzip2 is a compression utility using the Burrows-Wheeler block
46 sorting text compression algorithm, and Huffman coding. Compression
47 is generally considerably better than that achieved by more
48 conventional LZ77/LZ78-based compressors, and approaches the
49 performance of the PPM family of statistical compressors.
51 Unless you have a specific application which requires bunzip2, you
52 should probably say N here.
54 config BUSYBOX_CONFIG_BZIP2
58 bzip2 is a compression utility using the Burrows-Wheeler block
59 sorting text compression algorithm, and Huffman coding. Compression
60 is generally considerably better than that achieved by more
61 conventional LZ77/LZ78-based compressors, and approaches the
62 performance of the PPM family of statistical compressors.
64 Unless you have a specific application which requires bzip2, you
65 should probably say N here.
67 config BUSYBOX_CONFIG_CPIO
71 cpio is an archival utility program used to create, modify, and extract
72 contents from archives.
73 cpio has 110 bytes of overheads for every stored file.
75 This implementation of cpio can extract cpio archives created in the
76 "newc" or "crc" format, it cannot create or modify them.
78 Unless you have a specific application which requires cpio, you should
81 config BUSYBOX_CONFIG_FEATURE_CPIO_O
82 bool "Support for archive creation"
84 depends on BUSYBOX_CONFIG_CPIO
86 This implementation of cpio can create cpio archives in the "newc"
89 config BUSYBOX_CONFIG_DPKG
93 dpkg is a medium-level tool to install, build, remove and manage Debian packages.
95 This implementation of dpkg has a number of limitations, you should use the
96 official dpkg if possible.
98 config BUSYBOX_CONFIG_DPKG_DEB
102 dpkg-deb packs, unpacks and provides information about Debian archives.
104 This implementation of dpkg-deb cannot pack archives.
106 Unless you have a specific application which requires dpkg-deb, you should
109 config BUSYBOX_CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
110 bool "Extract only (-x)"
112 depends on BUSYBOX_CONFIG_DPKG_DEB
114 This reduces dpkg-deb to the equivalent of "ar -p <deb> data.tar.gz | tar -zx".
115 However it saves space as none of the extra dpkg-deb, ar or tar options are
116 needed, they are linked to internally.
118 config BUSYBOX_CONFIG_GUNZIP
122 gunzip is used to decompress archives created by gzip.
123 You can use the `-t' option to test the integrity of
124 an archive, without decompressing it.
126 config BUSYBOX_CONFIG_FEATURE_GUNZIP_UNCOMPRESS
127 bool "Uncompress support"
129 depends on BUSYBOX_CONFIG_GUNZIP
131 Enable if you want gunzip to have the ability to decompress
132 archives created by the program compress (not much
135 config BUSYBOX_CONFIG_GZIP
139 gzip is used to compress files.
140 It's probably the most widely used UNIX compression program.
142 config BUSYBOX_CONFIG_IPKG
145 select BUSYBOX_CONFIG_MD5SUM
146 select BUSYBOX_CONFIG_WGET
147 select BUSYBOX_CONFIG_DIFF
149 ipkg is the itsy package management system.
151 config BUSYBOX_CONFIG_RPM2CPIO
155 Converts an RPM file into a CPIO archive.
157 config BUSYBOX_CONFIG_RPM
161 Mini RPM applet - queries and extracts RPM packages.
163 config BUSYBOX_CONFIG_FEATURE_RPM_BZ2
164 bool "Enable handling of rpms with bzip2-compressed data inside"
166 depends on BUSYBOX_CONFIG_RPM
168 Enable handling of rpms with bzip2-compressed data inside.
170 config BUSYBOX_CONFIG_TAR
174 tar is an archiving program. It's commonly used with gzip to
175 create compressed archives. It's probably the most widely used
176 UNIX archive program.
178 config BUSYBOX_CONFIG_FEATURE_TAR_CREATE
179 bool "Enable archive creation"
181 depends on BUSYBOX_CONFIG_TAR
183 If you enable this option you'll be able to create
184 tar archives using the `-c' option.
186 config BUSYBOX_CONFIG_FEATURE_TAR_GZIP
187 bool "Enable -z option"
189 depends on BUSYBOX_CONFIG_TAR
191 If you enable this option tar will be able to call gzip,
192 when creating or extracting tar gziped archives.
194 config BUSYBOX_CONFIG_FEATURE_TAR_BZIP2
195 bool "Enable -j option to handle .tar.bz2 files"
197 depends on BUSYBOX_CONFIG_TAR
199 If you enable this option you'll be able to extract
200 archives compressed with bzip2.
202 config BUSYBOX_CONFIG_FEATURE_TAR_LZMA
203 bool "Enable -a option to handle .tar.lzma files"
205 depends on BUSYBOX_CONFIG_TAR
207 If you enable this option you'll be able to extract
208 archives compressed with lzma.
210 config BUSYBOX_CONFIG_FEATURE_TAR_COMPRESS
211 bool "Enable -Z option"
213 depends on BUSYBOX_CONFIG_TAR
215 If you enable this option tar will be able to call uncompress,
216 when extracting .tar.Z archives.
218 config BUSYBOX_CONFIG_FEATURE_TAR_AUTODETECT
219 bool "Let tar autodetect gz/bz2 compresses tarballs"
221 depends on BUSYBOX_CONFIG_FEATURE_TAR_GZIP || BUSYBOX_CONFIG_FEATURE_TAR_BZIP2
223 With this option tar can automatically detect gzip/bzip2 compressed
224 tarballs. Currently it works only on seekable streams.
226 config BUSYBOX_CONFIG_FEATURE_TAR_FROM
227 bool "Enable -X (exclude from) and -T (include from) options)"
229 depends on BUSYBOX_CONFIG_TAR
231 If you enable this option you'll be able to specify
232 a list of files to include or exclude from an archive.
234 config BUSYBOX_CONFIG_FEATURE_TAR_OLDGNU_COMPATIBILITY
235 bool "Support for old tar header format"
237 depends on BUSYBOX_CONFIG_TAR
239 This option is required to unpack archives created in
240 the old GNU format; help to kill this old format by
241 repacking your ancient archives with the new format.
243 config BUSYBOX_CONFIG_FEATURE_TAR_OLDSUN_COMPATIBILITY
244 bool "Enable untarring of tarballs with checksums produced by buggy Sun tar"
246 depends on BUSYBOX_CONFIG_TAR
248 This option is required to unpack archives created by some old
249 version of Sun's tar (it was calculating checksum using signed arithmetic).
250 It is said to be fixed in newer Sun tar, but "old" tarballs still exist.
252 config BUSYBOX_CONFIG_FEATURE_TAR_GNU_EXTENSIONS
253 bool "Support for GNU tar extensions (long filenames)"
255 depends on BUSYBOX_CONFIG_TAR
257 With this option busybox supports GNU long filenames and
260 config BUSYBOX_CONFIG_FEATURE_TAR_LONG_OPTIONS
261 bool "Enable long options"
263 depends on BUSYBOX_CONFIG_TAR && BUSYBOX_CONFIG_GETOPT_LONG
265 Enable use of long options, increases size by about 400 Bytes
267 config BUSYBOX_CONFIG_FEATURE_TAR_UNAME_GNAME
268 bool "Enable use of user and group names"
270 depends on BUSYBOX_CONFIG_TAR
272 Enables use of user and group names in tar. This affects contents
273 listings (-t) and preserving permissions when unpacking (-p).
276 config BUSYBOX_CONFIG_UNCOMPRESS
280 uncompress is used to decompress archives created by compress.
281 Not much used anymore, replaced by gzip/gunzip.
283 config BUSYBOX_CONFIG_UNLZMA
287 unlzma is a compression utility using the Lempel-Ziv-Markov chain
288 compression algorithm, and range coding. Compression
289 is generally considerably better than that achieved by the bzip2
292 The BusyBox unlzma applet is limited to de-compression only.
293 On an x86 system, this applet adds about 4K.
295 Unless you have a specific application which requires unlzma, you
296 should probably say N here.
298 config BUSYBOX_CONFIG_FEATURE_LZMA_FAST
299 bool "Optimize unlzma for speed"
301 depends on BUSYBOX_CONFIG_UNLZMA
303 This option reduces decompression time by about 33% at the cost of
306 config BUSYBOX_CONFIG_UNZIP
310 unzip will list or extract files from a ZIP archive,
311 commonly found on DOS/WIN systems. The default behavior
312 (with no options) is to extract the archive into the
313 current directory. Use the `-d' option to extract to a
314 directory of your choice.
316 comment "Common options for cpio and tar"
317 depends on BUSYBOX_CONFIG_CPIO || BUSYBOX_CONFIG_TAR
319 comment "Common options for dpkg and dpkg_deb"
320 depends on BUSYBOX_CONFIG_DPKG || BUSYBOX_CONFIG_DPKG_DEB
322 config BUSYBOX_CONFIG_FEATURE_DEB_TAR_GZ
323 bool "gzip debian packages (normal)"
324 default n if BUSYBOX_CONFIG_DPKG || BUSYBOX_CONFIG_DPKG_DEB
325 depends on BUSYBOX_CONFIG_DPKG || BUSYBOX_CONFIG_DPKG_DEB
327 This is the default compression method inside the debian ar file.
329 If you want compatibility with standard .deb's you should say yes here.
331 config BUSYBOX_CONFIG_FEATURE_DEB_TAR_BZ2
332 bool "bzip2 debian packages"
334 depends on BUSYBOX_CONFIG_DPKG || BUSYBOX_CONFIG_DPKG_DEB
336 This allows dpkg and dpkg-deb to extract deb's that are compressed internally
337 with bzip2 instead of gzip.
339 You only want this if you are creating your own custom debian packages that
340 use an internal control.tar.bz2 or data.tar.bz2.
342 config BUSYBOX_CONFIG_FEATURE_DEB_TAR_LZMA
343 bool "lzma debian packages"
345 depends on BUSYBOX_CONFIG_DPKG || BUSYBOX_CONFIG_DPKG_DEB
347 This allows dpkg and dpkg-deb to extract deb's that are compressed
348 internally with lzma instead of gzip.
350 You only want this if you are creating your own custom debian
351 packages that use an internal control.tar.lzma or data.tar.lzma.