menu "General Configuration"
-config NITPICK
- bool "See lots more (probably unnecessary) configuration options."
- default n
- help
- Some BusyBox applets have more configuration options than anyone
- will ever care about. To avoid drowining people in complexity, most
- of the applet features that can be set to a sane default value are
- hidden, unless you hit the above switch.
-
- This is better than to telling people to edit the busybox source
- code, but not by much.
-
- See http://en.wikipedia.org/wiki/Fibber_McGee_and_Molly#The_Closet
-
- You have been warned.
-
config DESKTOP
bool "Enable options for full-blown desktop systems"
default n
Select this only if you plan to use busybox on full-blown
desktop machine with common Linux distro, not on an embedded box.
+config FEATURE_ASSUME_UNICODE
+ bool "Assume that 1:1 char/glyph correspondence is not true"
+ default n
+ help
+ This makes various applets aware that one byte is not
+ one character on screen.
+
+ Busybox aims to eventually work correctly with Unicode displays.
+ Any older encodings are not guaranteed to work.
+ Probably by the time when busybox will be fully Unicode-clean,
+ other encodings will be mainly of historic interest.
+
choice
prompt "Buffer allocation policy"
default FEATURE_BUFFERS_USE_MALLOC
- depends on NITPICK
help
There are 3 ways BusyBox can handle buffer allocations:
- Use malloc. This costs code size for the call to xmalloc.
help
Enable 'busybox --install [-s]' support. This will allow you to use
busybox at runtime to create hard links or symlinks for all the
- applets that are compiled into busybox. This feature requires the
- /proc filesystem.
+ applets that are compiled into busybox.
config LOCALE_SUPPORT
bool "Enable locale support (system needs locale for this to work)"
busybox to support locale settings.
config GETOPT_LONG
- bool "Enable support for --long-options"
+ bool "Support for --long-options"
default y
help
Enable this if you want busybox applets to use the gnu --long-option
config FEATURE_CLEAN_UP
bool "Clean up all memory before exiting (usually not needed)"
default n
- depends on NITPICK
help
As a size optimization, busybox normally exits without explicitly
freeing dynamically allocated memory or closing files. This saves
Don't enable this unless you have a really good reason to clean
things up manually.
+config FEATURE_PIDFILE
+ bool "Support writing pidfiles"
+ default n
+ help
+ This option makes some applets (e.g. crond, syslogd, inetd) write
+ a pidfile in /var/run. Some applications rely on them.
+
config FEATURE_SUID
bool "Support for SUID/SGID handling"
default n
are login, passwd, su, ping, traceroute, crontab, dnsd, ipcrm, ipcs,
and vlock.
-config FEATURE_SYSLOG
- bool "Support for syslog"
- default n
- help
- This option is auto-selected when you select any applet which may
- send its output to syslog. You do not need to select it manually.
-
config FEATURE_SUID_CONFIG
bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
default n if FEATURE_SUID
The file has to be owned by user root, group root and has to be
writeable only by root:
- (chown 0.0 /etc/busybox.conf; chmod 600 /etc/busybox.conf)
+ (chown 0.0 /etc/busybox.conf; chmod 600 /etc/busybox.conf)
The busybox executable has to be owned by user root, group
root and has to be setuid root for this to work:
- (chown 0.0 /bin/busybox; chmod 4755 /bin/busybox)
+ (chown 0.0 /bin/busybox; chmod 4755 /bin/busybox)
Robert 'sandman' Griebl has more information here:
<url: http://www.softforge.de/bb/suid.html >.
/etc/busybox.conf should be readable by the user needing the SUID, check
this option to avoid users to be notified about missing permissions.
-config FEATURE_HAVE_RPC
- bool "RPC support"
- default y
- help
- Select this if you have rpc support.
- This automatically turns off all configuration options that rely
- on RPC.
-
config SELINUX
bool "Support NSA Security Enhanced Linux"
default n
Most people will leave this set to 'N'.
-config FEATURE_EXEC_PREFER_APPLETS
+config FEATURE_PREFER_APPLETS
bool "exec prefers applets"
default n
help
This is an experimental option which directs applets about to
call 'exec' to try and find an applicable busybox applet before
- searching the executable path for a binary or symlink to execute.
+ searching the PATH. This is typically done by exec'ing
+ /proc/self/exe.
+ This may affect shell, find -exec, xargs and similar applets.
+ They will use applets even if /bin/<applet> -> busybox link
+ is missing (or is not a link to busybox). However, this causes
+ problems in chroot jails without mounted /proc and with ps/top
+ (command name can be shown as 'exe' for applets started this way).
config BUSYBOX_EXEC_PATH
string "Path to BusyBox executable"
executable. If you haven't got /proc, set this to wherever you
want to run BusyBox from.
+# These are auto-selected by other options
+
+config FEATURE_SYSLOG
+ bool "Support for logging to syslog"
+ default n
+ help
+ This option is auto-selected when you select any applet which may
+ send its output to syslog. You do not need to select it manually.
+
+config FEATURE_HAVE_RPC
+ bool "RPC support"
+ default n
+ help
+ This is automatically selected if any of enabled applets need it.
+ You do not need to select it manually.
+
endmenu
menu 'Build Options'
Most people will leave this set to 'N'.
-config BUILD_LIBBUSYBOX
- bool "Build shared libbusybox"
+config PIE
+ bool "Build BusyBox as a position independent executable"
default n
+ depends on !STATIC
help
- Build a shared library libbusybox.so which contains all
- libraries used inside busybox.
+ (TODO: what is it and why/when is it useful?)
+ Most people will leave this set to 'N'.
- This is an experimental feature intended to support the upcoming
- "make standalone" mode. Enabling it against the one big busybox
- binary serves no purpose (and increases the size). You should
- almost certainly say "no" to this right now.
+config NOMMU
+ bool "Force NOMMU build"
+ default n
+ help
+ Busybox tries to detect whether architecture it is being
+ built against supports MMU or not. If this detection fails,
+ or if you want to build NOMMU version of busybox for testing,
+ you may force NOMMU build here.
-config FEATURE_FULL_LIBBUSYBOX
- bool "Feature-complete libbusybox"
- default n if !FEATURE_SHARED_BUSYBOX
+ Most people will leave this set to 'N'.
+
+# PIE can be made to work with BUILD_LIBBUSYBOX, but currently
+# build system does not support that
+config BUILD_LIBBUSYBOX
+ bool "Build shared libbusybox"
+ default n
+ depends on !FEATURE_PREFER_APPLETS && !PIE && !STATIC
+ help
+ Build a shared library libbusybox.so.N.N.N which contains all
+ busybox code.
+
+ This feature allows every applet to be built as a tiny
+ separate executable. Enabling it for "one big busybox binary"
+ approach serves no purpose and increases code size.
+ You should almost certainly say "no" to this.
+
+### config FEATURE_FULL_LIBBUSYBOX
+### bool "Feature-complete libbusybox"
+### default n if !FEATURE_SHARED_BUSYBOX
+### depends on BUILD_LIBBUSYBOX
+### help
+### Build a libbusybox with the complete feature-set, disregarding
+### the actually selected config.
+###
+### Normally, libbusybox will only contain the features which are
+### used by busybox itself. If you plan to write a separate
+### standalone application which uses libbusybox say 'Y'.
+###
+### Note: libbusybox is GPL, not LGPL, and exports no stable API that
+### might act as a copyright barrier. We can and will modify the
+### exported function set between releases (even minor version number
+### changes), and happily break out-of-tree features.
+###
+### Say 'N' if in doubt.
+
+config FEATURE_INDIVIDUAL
+ bool "Produce a binary for each applet, linked against libbusybox"
+ default y
depends on BUILD_LIBBUSYBOX
help
- Build a libbusybox with the complete feature-set, disregarding
- the actually selected config.
+ If your CPU architecture doesn't allow for sharing text/rodata
+ sections of running binaries, but allows for runtime dynamic
+ libraries, this option will allow you to reduce memory footprint
+ when you have many different applets running at once.
- Normally, libbusybox will only contain the features which are
- used by busybox itself. If you plan to write a separate
- standalone application which uses libbusybox say 'Y'.
+ If your CPU architecture allows for sharing text/rodata,
+ having single binary is more optimal.
- Note: libbusybox is GPL, not LGPL, and exports no stable API that
- might act as a copyright barrier. We can and will modify the
- exported function set between releases (even minor version number
- changes), and happily break out-of-tree features.
+ Each applet will be a tiny program, dynamically linked
+ against libbusybox.so.N.N.N.
- Say 'N' if in doubt.
+ You need to have a working dynamic linker.
config FEATURE_SHARED_BUSYBOX
- bool "Use shared libbusybox for busybox"
- default y if BUILD_LIBBUSYBOX
- depends on !STATIC && BUILD_LIBBUSYBOX
+ bool "Produce additional busybox binary linked against libbusybox"
+ default y
+ depends on BUILD_LIBBUSYBOX
help
- Use libbusybox.so also for busybox itself.
- You need to have a working dynamic linker to use this variant.
+ Build busybox, dynamically linked against libbusybox.so.N.N.N.
+
+ You need to have a working dynamic linker.
+
+### config BUILD_AT_ONCE
+### bool "Compile all sources at once"
+### default n
+### help
+### Normally each source-file is compiled with one invocation of
+### the compiler.
+### If you set this option, all sources are compiled at once.
+### This gives the compiler more opportunities to optimize which can
+### result in smaller and/or faster binaries.
+###
+### Setting this option will consume alot of memory, e.g. if you
+### enable all applets with all features, gcc uses more than 300MB
+### RAM during compilation of busybox.
+###
+### This option is most likely only beneficial for newer compilers
+### such as gcc-4.1 and above.
+###
+### Say 'N' unless you know what you are doing.
config LFS
bool "Build with Large File Support (for accessing files > 2 GB)"
cp, mount, tar, and many others. If you want to access files larger
than 2 Gigabytes, enable this option. Otherwise, leave it set to 'N'.
-config BUILD_AT_ONCE
- bool "Compile all sources at once"
- default n
+config CROSS_COMPILER_PREFIX
+ string "Cross Compiler prefix"
+ default ""
help
- Normally each source-file is compiled with one invocation of
- the compiler.
- If you set this option, all sources are compiled at once.
- This gives the compiler more opportunities to optimize which can
- result in smaller and/or faster binaries.
-
- Setting this option will consume alot of memory, e.g. if you
- enable all applets with all features, gcc uses more than 300MB
- RAM during compilation of busybox.
-
- This option is most likely only beneficial for newer compilers
- such as gcc-4.1 and above.
-
- Say 'N' unless you know what you are doing.
+ If you want to build BusyBox with a cross compiler, then you
+ will need to set this to the cross-compiler prefix, for example,
+ "i386-uclibc-". Note that CROSS_COMPILE environment variable
+ or "make CROSS_COMPILE=xxx ..." will override this selection.
+ For native build leave it empty.
endmenu
Most people should answer N.
config DEBUG_PESSIMIZE
- bool "Disable compiler optimizations."
+ bool "Disable compiler optimizations"
default n
depends on DEBUG
help
in a much bigger executable that more closely matches the source
code.
+config WERROR
+ bool "Abort compilation on any warning"
+ default n
+ help
+ Selecting this will add -Werror to gcc command line.
+
+ Most people should answer N.
+
choice
prompt "Additional debugging library"
default NO_DEBUG_LIB
- depends on DEBUG
help
Using an additional debugging library will make BusyBox become
considerable larger and will cause it to run more slowly. You
will be supported in head, tail, and fold. (Note: should
affect renice too.)
+config PARSE
+ bool "Uniform config file parser debugging applet: parse"
+
endmenu
menu 'Installation Options'
Install applets as hard-links to the busybox binary. This might count
on a filesystem with few inodes.
+config INSTALL_APPLET_SCRIPT_WRAPPERS
+ bool "as script wrappers"
+ help
+ Install applets as script wrappers that call the busybox binary.
+
config INSTALL_APPLET_DONT
bool "not installed"
- depends on FEATURE_INSTALLER || FEATURE_SH_STANDALONE_SHELL || FEATURE_EXEC_PREFER_APPLETS
+ depends on FEATURE_INSTALLER || FEATURE_SH_STANDALONE || FEATURE_PREFER_APPLETS
help
Do not install applet links. Useful when using the -install feature
- or a standalone shell for rescue pruposes.
+ or a standalone shell for rescue purposes.
+
+endchoice
+
+choice
+ prompt "/bin/sh applet link"
+ default INSTALL_SH_APPLET_SYMLINK
+ depends on INSTALL_APPLET_SCRIPT_WRAPPERS
+ help
+ Choose how you install /bin/sh applet link.
+
+config INSTALL_SH_APPLET_SYMLINK
+ bool "as soft-link"
+ help
+ Install /bin/sh applet as soft-link to the busybox binary.
+
+config INSTALL_SH_APPLET_HARDLINK
+ bool "as hard-link"
+ help
+ Install /bin/sh applet as hard-link to the busybox binary.
+
+config INSTALL_SH_APPLET_SCRIPT_WRAPPER
+ bool "as script wrapper"
+ help
+ Install /bin/sh applet as script wrapper that call the busybox binary.
endchoice
source shell/Config.in
source sysklogd/Config.in
source runit/Config.in
+source selinux/Config.in
+source printutils/Config.in