2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 mainmenu "BusyBox Configuration"
12 menu "General Configuration"
15 prompt "Buffer allocation policy"
16 default "Allocate with Malloc"
18 There are 3 ways BusyBox can handle buffer allocations:
19 - Use malloc. This costs code size for the call to xmalloc.
20 - Put them on stack. For some very small machines with limited stack
21 space, this can be deadly. For most folks, this works just fine.
22 - Put them in BSS. This works beautifully for computers with a real
23 MMU (and OS support), but wastes runtime RAM for uCLinux. This
24 behavior was the only one available for BusyBox versions 0.48 and
27 config CONFIG_FEATURE_BUFFERS_USE_MALLOC
28 bool "Allocate with Malloc"
30 config CONFIG_FEATURE_BUFFERS_GO_ON_STACK
31 bool "Allocate on the Stack"
33 config CONFIG_FEATURE_BUFFERS_GO_IN_BSS
34 bool "Allocate in the .bss section"
38 config CONFIG_FEATURE_VERBOSE_USAGE
39 bool "Show verbose applet usage messages"
42 All BusyBox applets will show more verbose help messages when
43 busybox is invoked with --help. This will add lots of text to the
44 busybox binary. In the default configuration, this will add about
45 13k, but it can add much more depending on your configuration.
47 config CONFIG_FEATURE_INSTALLER
48 bool "Support --install [-s] to install applet links at runtime"
51 Enable 'busybox --install [-s]' support. This will allow you to use
52 busybox at runtime to create hard links or symlinks for all the
53 applets that are compiled into busybox. This feature requires the
56 config CONFIG_LOCALE_SUPPORT
57 bool "Enable locale support (system needs locale for this to work)"
60 Enable this if your system has locale support, and you would like
61 busybox to support locale settings.
63 config CONFIG_FEATURE_DEVFS
64 bool "Support for devfs"
67 Enable if you want BusyBox to work with devfs.
69 config CONFIG_FEATURE_DEVPTS
70 bool "Use the devpts filesystem for Unix98 PTYs"
71 default y if CONFIG_FEATURE_DEVFS
73 Enable if you want BusyBox to use Unix98 PTY support. If enabled,
74 busybox will use /dev/ptmx for the master side of the pseudoterminal
75 and /dev/pts/<number> for the slave side. Otherwise, BSD style
76 /dev/ttyp<number> will be used. To use this option, you should have
77 devpts or devfs mounted.
79 config CONFIG_FEATURE_CLEAN_UP
80 bool "Clean up all memory before exiting (usually not needed)"
83 As a size optimization, busybox by default does not cleanup memory
84 that is dynamically allocated or close files before exiting. This
85 saves space and is usually not needed since the OS will clean up for
86 us. Don't enable this unless you have a really good reason to clean
89 config CONFIG_FEATURE_SUID
90 bool "Support for SUID/SGID handling"
93 Please submit a patch to add help text for this item.
95 config CONFIG_FEATURE_SUID_CONFIG
96 bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
97 default y if CONFIG_FEATURE_SUID
98 depends on CONFIG_FEATURE_SUID
100 Please submit a patch to add help text for this item.
102 config CONFIG_FEATURE_SUID_CONFIG_QUIET
103 bool "Suppress warning message if /etc/busybox.conf is not readable"
105 depends on CONFIG_FEATURE_SUID_CONFIG
107 Please submit a patch to add help text for this item.
109 config CONFIG_SELINUX
110 bool "Support NSA Security Enhanced Linux"
113 Enable support for SE Linux in applets ls, ps, and id. Also provide
114 the option of compiling in SE Linux applets.
121 bool "Build BusyBox as a static binary (no shared libs)"
124 If you want to build a static BusyBox binary, which does not
125 use or require any shared libraries, then enable this option.
128 bool "Build with Large File Support (for accessing files > 2 GB)"
131 If you want to build BusyBox with large file support, then enable
132 this option. This will have no effect if your kernel or your C
133 library lacks large file support for large files. Some of the
134 programs that can benefit from large file support include dd, gzip,
135 cp, mount, tar, and many others. If you want to access files larger
136 than 2 Gigabytes, enable this option. Otherwise, leave it set to 'N'.
138 config USING_CROSS_COMPILER
139 bool "Do you want to build BusyBox with a Cross Compiler?"
142 Do you want to build BusyBox with a Cross Compiler? If so,
143 then enable this option. Otherwise leave it set to 'N'.
145 config CROSS_COMPILER_PREFIX
146 string "Cross Compiler prefix"
147 default "/usr/i386-linux-uclibc/bin/i386-uclibc-"
148 depends on USING_CROSS_COMPILER
150 If you want to build BusyBox with a cross compiler, then you
151 will need to set this to the cross-compiler prefix. For example,
152 if my cross-compiler is /usr/i386-linux-uclibc/bin/i386-uclibc-gcc
153 then I would enter '/usr/i386-linux-uclibc/bin/i386-uclibc-' here,
154 which will ensure the correct compiler is used.
156 config EXTRA_CFLAGS_OPTIONS
157 string "Any extra CFLAGS options for the compiler?"
160 Do you want to pass any extra CFLAGS options to the compiler as
161 you build BusyBox? If so, this is the option for you... For example,
162 if you want to add some simple compiler switches (like -march=i686),
163 or check for warnings using -Werror, just those options here.
167 menu 'Installation Options'
169 config CONFIG_INSTALL_NO_USR
170 bool "Don't use /usr"
173 Disable use of /usr. Don't activate this option if you don't know,
174 that you really want this behaviour.
177 string "BusyBox installation prefix"
180 Define Your directory to install BusyBox files/subdirs.
186 source archival/Config.in
187 source coreutils/Config.in
188 source console-tools/Config.in
189 source debianutils/Config.in
190 source editors/Config.in
191 source findutils/Config.in
192 source init/Config.in
193 source loginutils/Config.in
194 source miscutils/Config.in
195 source modutils/Config.in
196 source networking/Config.in
197 source procps/Config.in
198 source shell/Config.in
199 source sysklogd/Config.in
200 source util-linux/Config.in
202 menu 'Debugging Options'
205 bool "Build BusyBox as a static binary (no shared libs)"
208 If you want to build a static BusyBox binary, which does not
209 use or require any shared libraries, then enable this option.
210 This will make BusyBox be considerable larger, so you should
211 leave this option false unless you have a good reason (i.e.
212 your target platform does not support shared libraries, or
213 you are building an initrd which doesn't need anything but
216 Most people will leave this set to 'N'.
219 bool "Build BusyBox with Debugging symbols"
222 Say Y here if you wish to compile BusyBox with debugging symbols.
223 This will allow you to use a debugger to examine BusyBox internals
224 while applets are running. This increases the size of the binary
225 considerably and should only be used when doing development.
226 If you are doing development and want to debug BusyBox, answer Y.
231 bool "Build BusyBox with dmalloc support"
233 depends on DODEBUG && !DOEFENCE
235 This enables compiling with dmalloc ( http://dmalloc.com/ )
236 which is an excellent public domain mem leak and malloc problem
237 detector. To enable dmalloc, before running busybox you will
238 want to properly set your environment, for example:
239 export DMALLOC_OPTIONS=debug=0x34f47d83,inter=100,log=logfile
240 The 'debug=' value is generated using the following command
241 dmalloc -p log-stats -p log-non-free -p log-bad-space -p log-elapsed-time \
242 -p check-fence -p check-heap -p check-lists -p check-blank \
243 -p check-funcs -p realloc-copy -p allow-free-null
245 This will make BusyBox be considerable larger and run slower, so
246 you should leave this option disabled for production use.
249 bool "Build BusyBox with Electric-fence support"
251 depends on DODEBUG && !DODMALLOC
253 This enables compiling with Electric-fence support. Electric
254 fence is another very useful malloc debugging library which used
255 your computers virtual memory hardware to detect illegal memory
256 accesses. This support will make BusyBox be considerable larger
257 and run slower, so you should leave this option disabled unless
258 you are hunting a hard to find memory problem.