Annotation of /trunk/mkinitrd-magellan/busybox/archival/Config.in
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Fri Apr 24 18:33:46 2009 UTC (15 years ago) by niro
File size: 8339 byte(s)
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 | niro | 532 | # |
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 | niro | 816 | 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 | niro | 532 | config AR |
33 | bool "ar" | ||
34 | default n | ||
35 | help | ||
36 | ar is an archival utility program used to create, modify, and | ||
37 | niro | 816 | extract contents from archives. An archive is a single file holding |
38 | niro | 532 | 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 | niro | 816 | bool "Support for long filenames (not need for debs)" |
57 | niro | 532 | default n |
58 | depends on AR | ||
59 | help | ||
60 | niro | 816 | By default the ar format can only store the first 15 characters of |
61 | the filename, this option removes that limitation. | ||
62 | niro | 532 | 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 | niro | 816 | sorting text compression algorithm, and Huffman coding. Compression |
71 | niro | 532 | 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 | niro | 816 | 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 | niro | 532 | config CPIO |
92 | bool "cpio" | ||
93 | default n | ||
94 | help | ||
95 | niro | 816 | cpio is an archival utility program used to create, modify, and |
96 | extract contents from archives. | ||
97 | niro | 532 | 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 | niro | 816 | Unless you have a specific application which requires cpio, you |
103 | should probably say N here. | ||
104 | niro | 532 | |
105 | niro | 816 | 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 | niro | 532 | config DPKG |
114 | bool "dpkg" | ||
115 | default n | ||
116 | niro | 816 | select FEATURE_SEAMLESS_GZ |
117 | niro | 532 | help |
118 | niro | 816 | dpkg is a medium-level tool to install, build, remove and manage |
119 | Debian packages. | ||
120 | niro | 532 | |
121 | niro | 816 | This implementation of dpkg has a number of limitations, |
122 | you should use the official dpkg if possible. | ||
123 | niro | 532 | |
124 | config DPKG_DEB | ||
125 | bool "dpkg_deb" | ||
126 | default n | ||
127 | niro | 816 | select FEATURE_SEAMLESS_GZ |
128 | niro | 532 | help |
129 | niro | 816 | dpkg-deb unpacks and provides information about Debian archives. |
130 | niro | 532 | |
131 | This implementation of dpkg-deb cannot pack archives. | ||
132 | |||
133 | niro | 816 | Unless you have a specific application which requires dpkg-deb, |
134 | say N here. | ||
135 | niro | 532 | |
136 | config FEATURE_DPKG_DEB_EXTRACT_ONLY | ||
137 | niro | 816 | bool "Extract only (-x)" |
138 | niro | 532 | default n |
139 | depends on DPKG_DEB | ||
140 | help | ||
141 | niro | 816 | 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 | niro | 532 | |
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 | niro | 816 | if TAR |
182 | |||
183 | niro | 532 | 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 | niro | 816 | config FEATURE_TAR_AUTODETECT |
192 | bool "Autodetect gz/bz2 compressed tarballs" | ||
193 | niro | 532 | default n |
194 | niro | 816 | depends on FEATURE_SEAMLESS_Z || FEATURE_SEAMLESS_GZ || FEATURE_SEAMLESS_BZ2 || FEATURE_SEAMLESS_LZMA |
195 | niro | 532 | help |
196 | niro | 816 | With this option tar can automatically detect gzip/bzip2 compressed |
197 | tarballs. Currently it works only on files (not pipes etc). | ||
198 | niro | 532 | |
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 | niro | 816 | bool "Support for old tar header format" |
209 | niro | 532 | 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 | niro | 816 | 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 | niro | 532 | config FEATURE_TAR_GNU_EXTENSIONS |
227 | niro | 816 | bool "Support for GNU tar extensions (long filenames)" |
228 | niro | 532 | 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 | niro | 816 | Enable use of long options, increases size by about 400 Bytes |
240 | niro | 532 | |
241 | niro | 816 | 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 | niro | 532 | 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 | niro | 816 | compression algorithm, and range coding. Compression |
265 | niro | 532 | 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 | niro | 816 | bool "Optimize unlzma for speed" |
276 | niro | 532 | 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 |