2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 mainmenu "BusyBox Configuration"
9 prompt "Buffer allocation policy"
10 default "Allocate with Malloc"
12 There are 3 ways BusyBox can handle buffer allocations:
13 - Use malloc. This costs code size for the call to xmalloc.
14 - Put them on stack. For some very small machines with limited stack
15 space, this can be deadly. For most folks, this works just fine.
16 - Put them in BSS. This works beautifully for computers with a real
17 MMU (and OS support), but wastes runtime RAM for uCLinux. This
18 behavior was the only one available for BusyBox versions 0.48 and
21 config CONFIG_FEATURE_BUFFERS_USE_MALLOC
22 bool "Allocate with Malloc"
24 config CONFIG_FEATURE_BUFFERS_GO_ON_STACK
25 bool "Allocate on the Stack"
27 config CONFIG_FEATURE_BUFFERS_GO_IN_BSS
28 bool "Allocate in the .bss section"
32 config CONFIG_FEATURE_VERBOSE_USAGE
33 bool "Show verbose applet usage messages"
36 All BusyBox applets will show more verbose help messages when
37 busybox is invoked with --help. This will add lots of text to the
38 busybox binary. In the default configuration, this will add about
39 13k, but it can add much more depending on your configuration.
41 config CONFIG_FEATURE_INSTALLER
42 bool "Support --install [-s] to install applet links at runtime"
45 Enable 'busybox --install [-s]' support. This will allow you to use
46 busybox at runtime to create hard links or symlinks for all the
47 applets that are compiled into busybox. This feature requires the
50 config CONFIG_LOCALE_SUPPORT
51 bool "Enable locale support (system needs locale for this to work)"
54 Enable this if your system has locale support, and you would like
55 busybox to support locale settings.
57 config CONFIG_FEATURE_DEVFS
58 bool "Support for devfs"
61 Enable if you want BusyBox to work with devfs.
63 config CONFIG_FEATURE_DEVPTS
64 bool "Use the devpts filesystem for Unix98 PTYs"
65 default y if CONFIG_FEATURE_DEVFS
67 Enable if you want BusyBox to use Unix98 PTY support. If enabled,
68 busybox will use /dev/ptmx for the master side of the pseudoterminal
69 and /dev/pts/<number> for the slave side. Otherwise, BSD style
70 /dev/ttyp<number> will be used. To use this option, you should have
71 devpts or devfs mounted.
73 config CONFIG_FEATURE_CLEAN_UP
74 bool "Clean up all memory before exiting (usually not needed)"
77 As a size optimization, busybox by default does not cleanup memory
78 that is dynamically allocated or close files before exiting. This
79 saves space and is usually not needed since the OS will clean up for
80 us. Don't enable this unless you have a really good reason to clean
83 config CONFIG_FEATURE_SUID
84 bool "Support for SUID/SGID handling"
87 Please submit a patch to add help text for this item.
89 config CONFIG_FEATURE_SUID_CONFIG
90 bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
91 default y if CONFIG_FEATURE_SUID
92 depends on CONFIG_FEATURE_SUID
94 Please submit a patch to add help text for this item.
96 config CONFIG_FEATURE_SUID_CONFIG_QUIET
97 bool "Suppress warning message if /etc/busybox.conf is not readable"
99 depends on CONFIG_FEATURE_SUID_CONFIG
101 Please submit a patch to add help text for this item.
108 bool "Build BusyBox as a static binary (no shared libs)"
111 If you want to build a static BusyBox binary, which does not
112 use or require any shared libraries, then enable this option.
115 bool "Build with Large File Support (for accessing files > 2 GB)"
118 If you want to build BusyBox with large file support, then enable
119 this option. This will have no effect if your kernel or your C
120 library lacks large file support for large files. Some of the
121 programs that can benefit from large file support include dd, gzip,
122 cp, mount, tar, and many others. If you want to access files larger
123 than 2 Gigabytes, enable this option. Otherwise, leave it set to 'N'.
125 config USING_CROSS_COMPILER
126 bool "Do you want to build BusyBox with a Cross Compiler?"
129 Do you want to build BusyBox with a Cross Compiler? If so,
130 then enable this option. Otherwise leave it set to 'N'.
132 config CROSS_COMPILER_PREFIX
133 string "Cross Compiler prefix"
134 default "/usr/i386-linux-uclibc/bin/i386-uclibc-"
135 depends on USING_CROSS_COMPILER
137 If you want to build BusyBox with a cross compiler, then you
138 will need to set this to the cross-compiler prefix. For example,
139 if my cross-compiler is /usr/i386-linux-uclibc/bin/i386-uclibc-gcc
140 then I would enter '/usr/i386-linux-uclibc/bin/i386-uclibc-' here,
141 which will ensure the correct compiler is used.
143 config EXTRA_CFLAGS_OPTIONS
144 string "Any extra CFLAGS options for the compiler?"
147 Do you want to pass any extra CFLAGS options to the compiler as
148 you build BusyBox? If so, this is the option for you... For example,
149 if you want to add some simple compiler switches (like -march=i686),
150 or check for warnings using -Werror, just those options here.
154 source archival/Config.in
155 source console-tools/Config.in
156 source debianutils/Config.in
157 source editors/Config.in
158 source fileutils/Config.in
159 source findutils/Config.in
160 source init/Config.in
161 source loginutils/Config.in
162 source miscutils/Config.in
163 source modutils/Config.in
164 source networking/Config.in
165 source procps/Config.in
166 source shell/Config.in
167 source shellutils/Config.in
168 source sysklogd/Config.in
169 source textutils/Config.in
170 source util-linux/Config.in
172 menu 'Debugging Options'
175 bool "Build BusyBox as a static binary (no shared libs)"
178 If you want to build a static BusyBox binary, which does not
179 use or require any shared libraries, then enable this option.
180 This will make BusyBox be considerable larger, so you should
181 leave this option false unless you have a good reason (i.e.
182 your target platform does not support shared libraries, or
183 you are building an initrd which doesn't need anything but
186 Most people will leave this set to 'N'.
189 bool "Build BusyBox with Debugging symbols"
192 Say Y here if you wish to compile BusyBox with debugging symbols.
193 This will allow you to use a debugger to examine BusyBox internals
194 while applets are running. This increases the size of the binary
195 considerably and should only be used when doing development.
196 If you are doing development and want to debug BusyBox, answer Y.
201 bool "Build BusyBox with dmalloc support"
203 depends on DODEBUG && !DOEFENCE
205 This enables compiling with dmalloc ( http://dmalloc.com/ )
206 which is an excellent public domain mem leak and malloc problem
207 detector. To enable dmalloc, before running busybox you will
208 want to properly set your environment, for example:
209 export DMALLOC_OPTIONS=debug=0x34f47d83,inter=100,log=logfile
210 The 'debug=' value is generated using the following command
211 dmalloc -p log-stats -p log-non-free -p log-bad-space -p log-elapsed-time \
212 -p check-fence -p check-heap -p check-lists -p check-blank \
213 -p check-funcs -p realloc-copy -p allow-free-null
215 This will make BusyBox be considerable larger and run slower, so
216 you should leave this option disabled for production use.
219 bool "Build BusyBox with Electric-fence support"
221 depends on DODEBUG && !DODMALLOC
223 This enables compiling with Electric-fence support. Electric
224 fence is another very useful malloc debugging library which used
225 your computers virtual memory hardware to detect illegal memory
226 accesses. This support will make BusyBox be considerable larger
227 and run slower, so you should leave this option disabled unless
228 you are hunting a hard to find memory problem.