2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 menu "Archival Utilities"
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
19 The stored filename is limited to 15 characters. (for more information
20 see long filename support).
21 ar has 60 bytes of overheads for every stored file.
23 This implementation of ar can extract archives, it cannot create or
25 On an x86 system, the ar applet adds about XXX bytes.
27 Unless you have a specific application which requires ar, you should
30 config CONFIG_FEATURE_AR_LONG_FILENAMES
31 bool " Enable support for long filenames (not need for debs)"
35 By default the ar format can only store the first 15 characters of the
36 filename, this option removes that limitation.
37 It supports the GNU ar long filename method which moves multiple long
38 filenames into a the data section of a new ar entry.
44 bunzip2 is an compression utility using the Burrows-Wheeler block
45 sorting text compression algorithm, and Huffman coding. Compression
46 is generally considerably better than that achieved by more
47 conventional LZ77/LZ78-based compressors, and approaches the
48 performance of the PPM family of statistical compressors.
50 The BusyBox bunzip2 applet is limited to de-compression only.
51 On an x86 system, this applet adds about XXX bytes.
53 Unless you have a specific application which requires bunzip2, you
54 should probably say N here.
60 cpio is an archival utility program used to create, modify, and extract
61 contents from archives.
62 cpio has 110 bytes of overheads for every stored file.
64 This implementation of cpio can extract cpio archives created in the
65 "newc" or "crc" format, it cannot create or modify them.
67 Unless you have a specific application which requires cpio, you should
74 dpkg is a medium-level tool to install, build, remove and manage Debian packages.
76 This implementation of dpkg has a number of limitations, you should use the
77 official dpkg if possible.
79 config CONFIG_DPKG_DEB
83 dpkg-deb packs, unpacks and provides information about Debian archives.
85 This implementation of dpkg-deb cannot pack archives.
87 Unless you have a specific application which requires dpkg-deb, you should
90 config CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
91 bool " extract only (-x)"
93 depends on CONFIG_DPKG_DEB
95 This reduced dpkg-deb to the equivalent of "ar -p <deb> data.tar.gz | tar -zx".
96 However it saves space as none of the extra dpkg-deb, ar or tar options are
97 needed, they are linked to internally.
99 config CONFIG_FEATURE_DEB_TAR_GZ
100 bool " gzip debian packages (normal)"
101 default y if CONFIG_DPKG || CONFIG_DPKG_DEB
102 depends on CONFIG_DPKG || CONFIG_DPKG_DEB
104 This is the default compression method inside the debian ar file.
106 If you want compatability with standard .deb's you should say yes here.
108 config CONFIG_FEATURE_DEB_TAR_BZ2
109 bool " bzip2 debian packages"
111 depends on CONFIG_DPKG || CONFIG_DPKG_DEB
113 This allows dpkg and dpkg-deb to extract deb's that are compressed internally
114 with bzip2 instead of gzip.
116 You only want this is your are creating your own custom debian packages that
117 use an internal control.tar.bz2 or data.tar.bz2.
123 gunzip is used to decompress archives created by gzip.
124 You can use the `-t' option to test the integrity of
125 an archive, without decompressing it.
127 config CONFIG_FEATURE_GUNZIP_UNCOMPRESS
128 bool " Uncompress support"
130 depends on CONFIG_GUNZIP
132 If you want gunzip to have the ability to decompress
133 archives created by the program compress (not much
140 gzip is used to compress files.
141 It's probably the most used UNIX compression program.
143 config CONFIG_RPM2CPIO
147 Converts an RPM file into a CPIO archive.
153 Mini RPM applet - querys and extracts
159 tar is an archiving program. It's commonly used with gzip to
160 create compressed archives. It's probably the most used
161 UNIX archive program.
163 config CONFIG_FEATURE_TAR_CREATE
164 bool " Enable archive creation"
166 depends on CONFIG_TAR
168 If you enable this option you'll be able to create
169 tar archives using the `-c' option.
171 config CONFIG_FEATURE_TAR_BZIP2
172 bool " Enable -j option to handle .tar.bz2 files"
174 depends on CONFIG_TAR
176 If you enable this option you'll be able to extract
177 archives compressed with bzip2.
179 config CONFIG_FEATURE_TAR_EXCLUDE
180 bool " Enable -X and --exclude options (exclude files)"
182 depends on CONFIG_TAR
184 If you enable this option you'll be able to specify
185 a list of files to exclude from an archive.
187 config CONFIG_FEATURE_TAR_GZIP
188 bool " Enable -z option"
190 depends on CONFIG_TAR
192 If you enable this option tar will be able to call gzip,
193 when creating or extracting tar gziped archives.
195 config CONFIG_FEATURE_TAR_OLDGNU_COMPATABILITY
196 bool " Enable support for old tar header format"
198 depends on CONFIG_TAR
200 This option is required to unpack archives created with
201 in the old GNU format, help to kill this old format by
202 repacking your ancient archives with the new format.
204 config CONFIG_FEATURE_TAR_GNU_EXTENSIONS
205 bool " Enable support for some GNU tar extensions"
207 depends on CONFIG_TAR
209 With this option busybox supports GNU long filenames and
212 config CONFIG_FEATURE_UNARCHIVE_TAPE
213 bool " Enable tape drive support"
215 depends on CONFIG_TAR || CONFIG_CPIO
217 I dont think this is needed anymore.
219 config CONFIG_UNCOMPRESS
223 uncompress is used to decompress archives created by compress.
224 Not much used anymore, replaced by gzip/gunzip.
230 unzip will list or extract files from a ZIP archive,
231 commonly found on DOS/WIN systems. The default behavior
232 (with no options) is to extract the archive into the
233 current directory. Use the `-d' option to extract to a
234 directory of your choice.