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    Contents of /trunk/mkinitrd-magellan/busybox/archival/Config.in

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    Revision 816 - (show annotations) (download)
    Fri Apr 24 18:33:46 2009 UTC (15 years ago) by niro
    File size: 8339 byte(s) 
    -updated to busybox-1.13.4
    1 #
    2 # For a description of the syntax of this configuration file,
    3 # see scripts/kbuild/config-language.txt.
    4 #
    5
    6 menu "Archival Utilities"
    7
    8 config FEATURE_SEAMLESS_LZMA
    9 bool "Make tar, rpm, modprobe etc understand .lzma data"
    10 default n
    11 help
    12 Make tar, rpm, modprobe etc understand .lzma data.
    13
    14 config FEATURE_SEAMLESS_BZ2
    15 bool "Make tar, rpm, modprobe etc understand .bz2 data"
    16 default n
    17 help
    18 Make tar, rpm, modprobe etc understand .bz2 data.
    19
    20 config FEATURE_SEAMLESS_GZ
    21 bool "Make tar, rpm, modprobe etc understand .gz data"
    22 default n
    23 help
    24 Make tar, rpm, modprobe etc understand .gz data.
    25
    26 config FEATURE_SEAMLESS_Z
    27 bool "Make tar and gunzip understand .Z data"
    28 default n
    29 help
    30 Make tar and gunzip understand .Z data.
    31
    32 config AR
    33 bool "ar"
    34 default n
    35 help
    36 ar is an archival utility program used to create, modify, and
    37 extract contents from archives. An archive is a single file holding
    38 a collection of other files in a structure that makes it possible to
    39 retrieve the original individual files (called archive members).
    40 The original files' contents, mode (permissions), timestamp, owner,
    41 and group are preserved in the archive, and can be restored on
    42 extraction.
    43
    44 The stored filename is limited to 15 characters. (for more information
    45 see long filename support).
    46 ar has 60 bytes of overheads for every stored file.
    47
    48 This implementation of ar can extract archives, it cannot create or
    49 modify them.
    50 On an x86 system, the ar applet adds about 1K.
    51
    52 Unless you have a specific application which requires ar, you should
    53 probably say N here.
    54
    55 config FEATURE_AR_LONG_FILENAMES
    56 bool "Support for long filenames (not need for debs)"
    57 default n
    58 depends on AR
    59 help
    60 By default the ar format can only store the first 15 characters of
    61 the filename, this option removes that limitation.
    62 It supports the GNU ar long filename method which moves multiple long
    63 filenames into a the data section of a new ar entry.
    64
    65 config BUNZIP2
    66 bool "bunzip2"
    67 default n
    68 help
    69 bunzip2 is a compression utility using the Burrows-Wheeler block
    70 sorting text compression algorithm, and Huffman coding. Compression
    71 is generally considerably better than that achieved by more
    72 conventional LZ77/LZ78-based compressors, and approaches the
    73 performance of the PPM family of statistical compressors.
    74
    75 Unless you have a specific application which requires bunzip2, you
    76 should probably say N here.
    77
    78 config BZIP2
    79 bool "bzip2"
    80 default n
    81 help
    82 bzip2 is a compression utility using the Burrows-Wheeler block
    83 sorting text compression algorithm, and Huffman coding. Compression
    84 is generally considerably better than that achieved by more
    85 conventional LZ77/LZ78-based compressors, and approaches the
    86 performance of the PPM family of statistical compressors.
    87
    88 Unless you have a specific application which requires bzip2, you
    89 should probably say N here.
    90
    91 config CPIO
    92 bool "cpio"
    93 default n
    94 help
    95 cpio is an archival utility program used to create, modify, and
    96 extract contents from archives.
    97 cpio has 110 bytes of overheads for every stored file.
    98
    99 This implementation of cpio can extract cpio archives created in the
    100 "newc" or "crc" format, it cannot create or modify them.
    101
    102 Unless you have a specific application which requires cpio, you
    103 should probably say N here.
    104
    105 config FEATURE_CPIO_O
    106 bool "Support for archive creation"
    107 default n
    108 depends on CPIO
    109 help
    110 This implementation of cpio can create cpio archives in the "newc"
    111 format only.
    112
    113 config DPKG
    114 bool "dpkg"
    115 default n
    116 select FEATURE_SEAMLESS_GZ
    117 help
    118 dpkg is a medium-level tool to install, build, remove and manage
    119 Debian packages.
    120
    121 This implementation of dpkg has a number of limitations,
    122 you should use the official dpkg if possible.
    123
    124 config DPKG_DEB
    125 bool "dpkg_deb"
    126 default n
    127 select FEATURE_SEAMLESS_GZ
    128 help
    129 dpkg-deb unpacks and provides information about Debian archives.
    130
    131 This implementation of dpkg-deb cannot pack archives.
    132
    133 Unless you have a specific application which requires dpkg-deb,
    134 say N here.
    135
    136 config FEATURE_DPKG_DEB_EXTRACT_ONLY
    137 bool "Extract only (-x)"
    138 default n
    139 depends on DPKG_DEB
    140 help
    141 This reduces dpkg-deb to the equivalent of
    142 "ar -p <deb> data.tar.gz | tar -zx". However it saves space as none
    143 of the extra dpkg-deb, ar or tar options are needed, they are linked
    144 to internally.
    145
    146 config GUNZIP
    147 bool "gunzip"
    148 default n
    149 help
    150 gunzip is used to decompress archives created by gzip.
    151 You can use the `-t' option to test the integrity of
    152 an archive, without decompressing it.
    153
    154 config GZIP
    155 bool "gzip"
    156 default n
    157 help
    158 gzip is used to compress files.
    159 It's probably the most widely used UNIX compression program.
    160
    161 config RPM2CPIO
    162 bool "rpm2cpio"
    163 default n
    164 help
    165 Converts an RPM file into a CPIO archive.
    166
    167 config RPM
    168 bool "rpm"
    169 default n
    170 help
    171 Mini RPM applet - queries and extracts RPM packages.
    172
    173 config TAR
    174 bool "tar"
    175 default n
    176 help
    177 tar is an archiving program. It's commonly used with gzip to
    178 create compressed archives. It's probably the most widely used
    179 UNIX archive program.
    180
    181 if TAR
    182
    183 config FEATURE_TAR_CREATE
    184 bool "Enable archive creation"
    185 default y
    186 depends on TAR
    187 help
    188 If you enable this option you'll be able to create
    189 tar archives using the `-c' option.
    190
    191 config FEATURE_TAR_AUTODETECT
    192 bool "Autodetect gz/bz2 compressed tarballs"
    193 default n
    194 depends on FEATURE_SEAMLESS_Z || FEATURE_SEAMLESS_GZ || FEATURE_SEAMLESS_BZ2 || FEATURE_SEAMLESS_LZMA
    195 help
    196 With this option tar can automatically detect gzip/bzip2 compressed
    197 tarballs. Currently it works only on files (not pipes etc).
    198
    199 config FEATURE_TAR_FROM
    200 bool "Enable -X (exclude from) and -T (include from) options)"
    201 default n
    202 depends on TAR
    203 help
    204 If you enable this option you'll be able to specify
    205 a list of files to include or exclude from an archive.
    206
    207 config FEATURE_TAR_OLDGNU_COMPATIBILITY
    208 bool "Support for old tar header format"
    209 default N
    210 depends on TAR
    211 help
    212 This option is required to unpack archives created in
    213 the old GNU format; help to kill this old format by
    214 repacking your ancient archives with the new format.
    215
    216 config FEATURE_TAR_OLDSUN_COMPATIBILITY
    217 bool "Enable untarring of tarballs with checksums produced by buggy Sun tar"
    218 default N
    219 depends on TAR
    220 help
    221 This option is required to unpack archives created by some old
    222 version of Sun's tar (it was calculating checksum using signed
    223 arithmetic). It is said to be fixed in newer Sun tar, but "old"
    224 tarballs still exist.
    225
    226 config FEATURE_TAR_GNU_EXTENSIONS
    227 bool "Support for GNU tar extensions (long filenames)"
    228 default y
    229 depends on TAR
    230 help
    231 With this option busybox supports GNU long filenames and
    232 linknames.
    233
    234 config FEATURE_TAR_LONG_OPTIONS
    235 bool "Enable long options"
    236 default n
    237 depends on TAR && GETOPT_LONG
    238 help
    239 Enable use of long options, increases size by about 400 Bytes
    240
    241 config FEATURE_TAR_UNAME_GNAME
    242 bool "Enable use of user and group names"
    243 default n
    244 depends on TAR
    245 help
    246 Enables use of user and group names in tar. This affects contents
    247 listings (-t) and preserving permissions when unpacking (-p).
    248 +200 bytes.
    249
    250 endif #tar
    251
    252 config UNCOMPRESS
    253 bool "uncompress"
    254 default n
    255 help
    256 uncompress is used to decompress archives created by compress.
    257 Not much used anymore, replaced by gzip/gunzip.
    258
    259 config UNLZMA
    260 bool "unlzma"
    261 default n
    262 help
    263 unlzma is a compression utility using the Lempel-Ziv-Markov chain
    264 compression algorithm, and range coding. Compression
    265 is generally considerably better than that achieved by the bzip2
    266 compressors.
    267
    268 The BusyBox unlzma applet is limited to de-compression only.
    269 On an x86 system, this applet adds about 4K.
    270
    271 Unless you have a specific application which requires unlzma, you
    272 should probably say N here.
    273
    274 config FEATURE_LZMA_FAST
    275 bool "Optimize unlzma for speed"
    276 default n
    277 depends on UNLZMA
    278 help
    279 This option reduces decompression time by about 33% at the cost of
    280 a 2K bigger binary.
    281
    282 config UNZIP
    283 bool "unzip"
    284 default n
    285 help
    286 unzip will list or extract files from a ZIP archive,
    287 commonly found on DOS/WIN systems. The default behavior
    288 (with no options) is to extract the archive into the
    289 current directory. Use the `-d' option to extract to a
    290 directory of your choice.
    291
    292 endmenu