source: MondoRescue/branches/2.2.9/mindi-busybox/Config.in@ 2142

Last change on this file since 2142 was 1765, checked in by Bruno Cornec, 16 years ago

Update to busybox 1.7.2

File size: 16.3 KB
Line 
1#
2# For a description of the syntax of this configuration file,
3# see scripts/kbuild/config-language.txt.
4#
5
6mainmenu "BusyBox Configuration"
7
8config HAVE_DOT_CONFIG
9 bool
10 default y
11
12menu "Busybox Settings"
13
14menu "General Configuration"
15
16config NITPICK
17 bool "See lots more (probably unnecessary) configuration options."
18 default n
19 help
20 Some BusyBox applets have more configuration options than anyone
21 will ever care about. To avoid drowining people in complexity, most
22 of the applet features that can be set to a sane default value are
23 hidden, unless you hit the above switch.
24
25 This is better than to telling people to edit the busybox source
26 code, but not by much.
27
28 See http://en.wikipedia.org/wiki/Fibber_McGee_and_Molly#The_Closet
29
30 You have been warned.
31
32config DESKTOP
33 bool "Enable options for full-blown desktop systems"
34 default n
35 help
36 Enable options and features which are not essential.
37 Select this only if you plan to use busybox on full-blown
38 desktop machine with common Linux distro, not on an embedded box.
39
40choice
41 prompt "Buffer allocation policy"
42 default FEATURE_BUFFERS_USE_MALLOC
43 depends on NITPICK
44 help
45 There are 3 ways BusyBox can handle buffer allocations:
46 - Use malloc. This costs code size for the call to xmalloc.
47 - Put them on stack. For some very small machines with limited stack
48 space, this can be deadly. For most folks, this works just fine.
49 - Put them in BSS. This works beautifully for computers with a real
50 MMU (and OS support), but wastes runtime RAM for uCLinux. This
51 behavior was the only one available for BusyBox versions 0.48 and
52 earlier.
53
54config FEATURE_BUFFERS_USE_MALLOC
55 bool "Allocate with Malloc"
56
57config FEATURE_BUFFERS_GO_ON_STACK
58 bool "Allocate on the Stack"
59
60config FEATURE_BUFFERS_GO_IN_BSS
61 bool "Allocate in the .bss section"
62
63endchoice
64
65config SHOW_USAGE
66 bool "Show terse applet usage messages"
67 default y
68 help
69 All BusyBox applets will show help messages when invoked with
70 wrong arguments. You can turn off printing these terse usage
71 messages if you say no here.
72 This will save you up to 7k.
73
74config FEATURE_VERBOSE_USAGE
75 bool "Show verbose applet usage messages"
76 default n
77 select SHOW_USAGE
78 help
79 All BusyBox applets will show more verbose help messages when
80 busybox is invoked with --help. This will add a lot of text to the
81 busybox binary. In the default configuration, this will add about
82 13k, but it can add much more depending on your configuration.
83
84config FEATURE_COMPRESS_USAGE
85 bool "Store applet usage messages in compressed form"
86 default y
87 depends on SHOW_USAGE
88 help
89 Store usage messages in compressed form, uncompress them on-the-fly
90 when <applet> --help is called.
91
92 If you have a really tiny busybox with few applets enabled (and
93 bunzip2 isn't one of them), the overhead of the decompressor might
94 be noticeable. Also, if you run executables directly from ROM
95 and have very little memory, this might not be a win. Otherwise,
96 you probably want this.
97
98config FEATURE_INSTALLER
99 bool "Support --install [-s] to install applet links at runtime"
100 default n
101 help
102 Enable 'busybox --install [-s]' support. This will allow you to use
103 busybox at runtime to create hard links or symlinks for all the
104 applets that are compiled into busybox.
105
106config LOCALE_SUPPORT
107 bool "Enable locale support (system needs locale for this to work)"
108 default n
109 help
110 Enable this if your system has locale support and you would like
111 busybox to support locale settings.
112
113config GETOPT_LONG
114 bool "Enable support for --long-options"
115 default y
116 help
117 Enable this if you want busybox applets to use the gnu --long-option
118 style, in addition to single character -a -b -c style options.
119
120config FEATURE_DEVPTS
121 bool "Use the devpts filesystem for Unix98 PTYs"
122 default y
123 help
124 Enable if you want BusyBox to use Unix98 PTY support. If enabled,
125 busybox will use /dev/ptmx for the master side of the pseudoterminal
126 and /dev/pts/<number> for the slave side. Otherwise, BSD style
127 /dev/ttyp<number> will be used. To use this option, you should have
128 devpts mounted.
129
130config FEATURE_CLEAN_UP
131 bool "Clean up all memory before exiting (usually not needed)"
132 default n
133 depends on NITPICK
134 help
135 As a size optimization, busybox normally exits without explicitly
136 freeing dynamically allocated memory or closing files. This saves
137 space since the OS will clean up for us, but it can confuse debuggers
138 like valgrind, which report tons of memory and resource leaks.
139
140 Don't enable this unless you have a really good reason to clean
141 things up manually.
142
143config FEATURE_PIDFILE
144 bool "Support writing pidfiles"
145 default n
146 help
147 This option makes some applets (e.g. crond, syslogd, inetd) write
148 a pidfile in /var/run. Some applications rely on them.
149
150config FEATURE_SUID
151 bool "Support for SUID/SGID handling"
152 default n
153 help
154 With this option you can install the busybox binary belonging
155 to root with the suid bit set, and it'll and it'll automatically drop
156 priviledges for applets that don't need root access.
157
158 If you're really paranoid and don't want to do this, build two
159 busybox binaries with different applets in them (and the appropriate
160 symlinks pointing to each binary), and only set the suid bit on the
161 one that needs it. The applets currently marked to need the suid bit
162 are login, passwd, su, ping, traceroute, crontab, dnsd, ipcrm, ipcs,
163 and vlock.
164
165config FEATURE_SUID_CONFIG
166 bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
167 default n if FEATURE_SUID
168 depends on FEATURE_SUID
169 help
170 Allow the SUID / SGID state of an applet to be determined at runtime
171 by checking /etc/busybox.conf. (This is sort of a poor man's sudo.)
172 The format of this file is as follows:
173
174 <applet> = [Ssx-][Ssx-][x-] (<username>|<uid>).(<groupname>|<gid>)
175
176 An example might help:
177
178 [SUID]
179 su = ssx root.0 # applet su can be run by anyone and runs with euid=0/egid=0
180 su = ssx # exactly the same
181
182 mount = sx- root.disk # applet mount can be run by root and members of group disk
183 # and runs with euid=0
184
185 cp = --- # disable applet cp for everyone
186
187 The file has to be owned by user root, group root and has to be
188 writeable only by root:
189 (chown 0.0 /etc/busybox.conf; chmod 600 /etc/busybox.conf)
190 The busybox executable has to be owned by user root, group
191 root and has to be setuid root for this to work:
192 (chown 0.0 /bin/busybox; chmod 4755 /bin/busybox)
193
194 Robert 'sandman' Griebl has more information here:
195 <url: http://www.softforge.de/bb/suid.html >.
196
197config FEATURE_SUID_CONFIG_QUIET
198 bool "Suppress warning message if /etc/busybox.conf is not readable"
199 default y
200 depends on FEATURE_SUID_CONFIG
201 help
202 /etc/busybox.conf should be readable by the user needing the SUID, check
203 this option to avoid users to be notified about missing permissions.
204
205config SELINUX
206 bool "Support NSA Security Enhanced Linux"
207 default n
208 help
209 Enable support for SELinux in applets ls, ps, and id. Also provide
210 the option of compiling in SELinux applets.
211
212 If you do not have a complete SELinux userland installed, this stuff
213 will not compile. Go visit
214 http://www.nsa.gov/selinux/index.html
215 to download the necessary stuff to allow busybox to compile with
216 this option enabled. Specifially, libselinux 1.28 or better is
217 directly required by busybox. If the installation is located in a
218 non-standard directory, provide it by invoking make as follows:
219 CFLAGS=-I<libselinux-include-path> \
220 LDFLAGS=-L<libselinux-lib-path> \
221 make
222
223 Most people will leave this set to 'N'.
224
225config FEATURE_PREFER_APPLETS
226 bool "exec prefers applets"
227 default n
228 help
229 This is an experimental option which directs applets about to
230 call 'exec' to try and find an applicable busybox applet before
231 searching the PATH. This is typically done by exec'ing
232 /proc/self/exe.
233 This may affect shell, find -exec, xargs and similar applets.
234 They will use applets even if /bin/<applet> -> busybox link
235 is missing (or is not a link to busybox). However, this causes
236 problems in chroot jails without mounted /proc and with ps/top
237 (command name can be shown as 'exe' for applets started this way).
238
239config BUSYBOX_EXEC_PATH
240 string "Path to BusyBox executable"
241 default "/proc/self/exe"
242 help
243 When Busybox applets need to run other busybox applets, BusyBox
244 sometimes needs to exec() itself. When the /proc filesystem is
245 mounted, /proc/self/exe always points to the currently running
246 executable. If you haven't got /proc, set this to wherever you
247 want to run BusyBox from.
248
249# These are auto-selected by other options
250
251config FEATURE_SYSLOG
252 bool "Support for logging to syslog"
253 default n
254 help
255 This option is auto-selected when you select any applet which may
256 send its output to syslog. You do not need to select it manually.
257
258config FEATURE_HAVE_RPC
259 bool "RPC support"
260 default n
261 help
262 This is automatically selected if any of enabled applets need it.
263 You do not need to select it manually.
264
265endmenu
266
267menu 'Build Options'
268
269config STATIC
270 bool "Build BusyBox as a static binary (no shared libs)"
271 default n
272 help
273 If you want to build a static BusyBox binary, which does not
274 use or require any shared libraries, then enable this option.
275 This can cause BusyBox to be considerably larger, so you should
276 leave this option false unless you have a good reason (i.e.
277 your target platform does not support shared libraries, or
278 you are building an initrd which doesn't need anything but
279 BusyBox, etc).
280
281 Most people will leave this set to 'N'.
282
283config BUILD_LIBBUSYBOX
284 bool "Build shared libbusybox"
285 default n
286 help
287 Build a shared library libbusybox.so which contains all
288 libraries used inside busybox.
289
290 This is an experimental feature intended to support the upcoming
291 "make standalone" mode. Enabling it against the one big busybox
292 binary serves no purpose (and increases the size). You should
293 almost certainly say "no" to this right now.
294
295config FEATURE_FULL_LIBBUSYBOX
296 bool "Feature-complete libbusybox"
297 default n if !FEATURE_SHARED_BUSYBOX
298 depends on BUILD_LIBBUSYBOX
299 help
300 Build a libbusybox with the complete feature-set, disregarding
301 the actually selected config.
302
303 Normally, libbusybox will only contain the features which are
304 used by busybox itself. If you plan to write a separate
305 standalone application which uses libbusybox say 'Y'.
306
307 Note: libbusybox is GPL, not LGPL, and exports no stable API that
308 might act as a copyright barrier. We can and will modify the
309 exported function set between releases (even minor version number
310 changes), and happily break out-of-tree features.
311
312 Say 'N' if in doubt.
313
314config FEATURE_SHARED_BUSYBOX
315 bool "Use shared libbusybox for busybox"
316 default y if BUILD_LIBBUSYBOX
317 depends on !STATIC && BUILD_LIBBUSYBOX
318 help
319 Use libbusybox.so also for busybox itself.
320 You need to have a working dynamic linker to use this variant.
321
322config LFS
323 bool "Build with Large File Support (for accessing files > 2 GB)"
324 default n
325 select FDISK_SUPPORT_LARGE_DISKS
326 help
327 If you want to build BusyBox with large file support, then enable
328 this option. This will have no effect if your kernel or your C
329 library lacks large file support for large files. Some of the
330 programs that can benefit from large file support include dd, gzip,
331 cp, mount, tar, and many others. If you want to access files larger
332 than 2 Gigabytes, enable this option. Otherwise, leave it set to 'N'.
333
334config BUILD_AT_ONCE
335 bool "Compile all sources at once"
336 default n
337 help
338 Normally each source-file is compiled with one invocation of
339 the compiler.
340 If you set this option, all sources are compiled at once.
341 This gives the compiler more opportunities to optimize which can
342 result in smaller and/or faster binaries.
343
344 Setting this option will consume alot of memory, e.g. if you
345 enable all applets with all features, gcc uses more than 300MB
346 RAM during compilation of busybox.
347
348 This option is most likely only beneficial for newer compilers
349 such as gcc-4.1 and above.
350
351 Say 'N' unless you know what you are doing.
352
353endmenu
354
355menu 'Debugging Options'
356
357config DEBUG
358 bool "Build BusyBox with extra Debugging symbols"
359 default n
360 help
361 Say Y here if you wish to examine BusyBox internals while applets are
362 running. This increases the size of the binary considerably, and
363 should only be used when doing development. If you are doing
364 development and want to debug BusyBox, answer Y.
365
366 Most people should answer N.
367
368config WERROR
369 bool "Abort compilation on any warning"
370 default n
371 help
372 Selecting this will add -Werror to gcc command line.
373
374 Most people should answer N.
375
376# Seems to be unused
377#config DEBUG_PESSIMIZE
378# bool "Disable compiler optimizations."
379# default n
380# depends on DEBUG
381# help
382# The compiler's optimization of source code can eliminate and reorder
383# code, resulting in an executable that's hard to understand when
384# stepping through it with a debugger. This switches it off, resulting
385# in a much bigger executable that more closely matches the source
386# code.
387
388choice
389 prompt "Additional debugging library"
390 default NO_DEBUG_LIB
391 help
392 Using an additional debugging library will make BusyBox become
393 considerable larger and will cause it to run more slowly. You
394 should always leave this option disabled for production use.
395
396 dmalloc support:
397 ----------------
398 This enables compiling with dmalloc ( http://dmalloc.com/ )
399 which is an excellent public domain mem leak and malloc problem
400 detector. To enable dmalloc, before running busybox you will
401 want to properly set your environment, for example:
402 export DMALLOC_OPTIONS=debug=0x34f47d83,inter=100,log=logfile
403 The 'debug=' value is generated using the following command
404 dmalloc -p log-stats -p log-non-free -p log-bad-space -p log-elapsed-time \
405 -p check-fence -p check-heap -p check-lists -p check-blank \
406 -p check-funcs -p realloc-copy -p allow-free-null
407
408 Electric-fence support:
409 -----------------------
410 This enables compiling with Electric-fence support. Electric
411 fence is another very useful malloc debugging library which uses
412 your computer's virtual memory hardware to detect illegal memory
413 accesses. This support will make BusyBox be considerable larger
414 and run slower, so you should leave this option disabled unless
415 you are hunting a hard to find memory problem.
416
417
418config NO_DEBUG_LIB
419 bool "None"
420
421config DMALLOC
422 bool "Dmalloc"
423
424config EFENCE
425 bool "Electric-fence"
426
427endchoice
428
429config INCLUDE_SUSv2
430 bool "Enable obsolete features removed before SUSv3?"
431 default y
432 help
433 This option will enable backwards compatibility with SuSv2,
434 specifically, old-style numeric options ('command -1 <file>')
435 will be supported in head, tail, and fold. (Note: should
436 affect renice too.)
437
438endmenu
439
440menu 'Installation Options'
441
442config INSTALL_NO_USR
443 bool "Don't use /usr"
444 default n
445 help
446 Disable use of /usr. Don't activate this option if you don't know
447 that you really want this behaviour.
448
449choice
450 prompt "Applets links"
451 default INSTALL_APPLET_SYMLINKS
452 help
453 Choose how you install applets links.
454
455config INSTALL_APPLET_SYMLINKS
456 bool "as soft-links"
457 help
458 Install applets as soft-links to the busybox binary. This needs some
459 free inodes on the filesystem, but might help with filesystem
460 generators that can't cope with hard-links.
461
462config INSTALL_APPLET_HARDLINKS
463 bool "as hard-links"
464 help
465 Install applets as hard-links to the busybox binary. This might count
466 on a filesystem with few inodes.
467
468config INSTALL_APPLET_DONT
469 bool "not installed"
470 depends on FEATURE_INSTALLER || FEATURE_SH_STANDALONE || FEATURE_PREFER_APPLETS
471 help
472 Do not install applet links. Useful when using the -install feature
473 or a standalone shell for rescue purposes.
474
475endchoice
476
477config PREFIX
478 string "BusyBox installation prefix"
479 default "./_install"
480 help
481 Define your directory to install BusyBox files/subdirs in.
482
483endmenu
484
485source libbb/Config.in
486
487endmenu
488
489comment "Applets"
490
491source archival/Config.in
492source coreutils/Config.in
493source console-tools/Config.in
494source debianutils/Config.in
495source editors/Config.in
496source findutils/Config.in
497source init/Config.in
498source loginutils/Config.in
499source e2fsprogs/Config.in
500source modutils/Config.in
501source util-linux/Config.in
502source miscutils/Config.in
503source networking/Config.in
504source procps/Config.in
505source shell/Config.in
506source sysklogd/Config.in
507source runit/Config.in
508source selinux/Config.in
509source ipsvd/Config.in
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