Contents of /tags/mkinitrd-6_1_4/busybox/archival/Config.in
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Wed Aug 5 16:25:39 2009 UTC (15 years, 1 month ago) by niro
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Wed Aug 5 16:25:39 2009 UTC (15 years, 1 month ago) by niro
File size: 8339 byte(s)
tagged 'mkinitrd-6_1_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 |