bool
default y
+menu "Busybox Settings"
+
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
+ help
+ Enable options and features which are not essential.
+ Select this only if you plan to use busybox on full-blown
+ desktop machine with common Linux distro, not on an embedded box.
+
choice
prompt "Buffer allocation policy"
- default CONFIG_FEATURE_BUFFERS_USE_MALLOC
+ 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.
behavior was the only one available for BusyBox versions 0.48 and
earlier.
-config CONFIG_FEATURE_BUFFERS_USE_MALLOC
+config FEATURE_BUFFERS_USE_MALLOC
bool "Allocate with Malloc"
-config CONFIG_FEATURE_BUFFERS_GO_ON_STACK
+config FEATURE_BUFFERS_GO_ON_STACK
bool "Allocate on the Stack"
-config CONFIG_FEATURE_BUFFERS_GO_IN_BSS
+config FEATURE_BUFFERS_GO_IN_BSS
bool "Allocate in the .bss section"
endchoice
-config CONFIG_FEATURE_VERBOSE_USAGE
+config SHOW_USAGE
+ bool "Show terse applet usage messages"
+ default y
+ help
+ All BusyBox applets will show help messages when invoked with
+ wrong arguments. You can turn off printing these terse usage
+ messages if you say no here.
+ This will save you up to 7k.
+
+config FEATURE_VERBOSE_USAGE
bool "Show verbose applet usage messages"
default n
+ select SHOW_USAGE
help
All BusyBox applets will show more verbose help messages when
busybox is invoked with --help. This will add a lot of text to the
busybox binary. In the default configuration, this will add about
13k, but it can add much more depending on your configuration.
-config CONFIG_FEATURE_INSTALLER
+config FEATURE_COMPRESS_USAGE
+ bool "Store applet usage messages in compressed form"
+ default y
+ depends on SHOW_USAGE
+ help
+ Store usage messages in compressed form, uncompress them on-the-fly
+ when <applet> --help is called.
+
+ If you have a really tiny busybox with few applets enabled (and
+ bunzip2 isn't one of them), the overhead of the decompressor might
+ be noticeable. Also, if you run executables directly from ROM
+ and have very little memory, this might not be a win. Otherwise,
+ you probably want this.
+
+config FEATURE_INSTALLER
bool "Support --install [-s] to install applet links at runtime"
default n
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 CONFIG_LOCALE_SUPPORT
+config LOCALE_SUPPORT
bool "Enable locale support (system needs locale for this to work)"
default n
help
Enable this if your system has locale support and you would like
busybox to support locale settings.
-config CONFIG_FEATURE_DEVFS
- bool "Support for devfs"
- default n
+config GETOPT_LONG
+ bool "Enable support for --long-options"
+ default y
help
- Enable if you want BusyBox to work with devfs.
+ Enable this if you want busybox applets to use the gnu --long-option
+ style, in addition to single character -a -b -c style options.
-config CONFIG_FEATURE_DEVPTS
+config FEATURE_DEVPTS
bool "Use the devpts filesystem for Unix98 PTYs"
- default y if CONFIG_FEATURE_DEVFS
+ default y
help
Enable if you want BusyBox to use Unix98 PTY support. If enabled,
busybox will use /dev/ptmx for the master side of the pseudoterminal
and /dev/pts/<number> for the slave side. Otherwise, BSD style
/dev/ttyp<number> will be used. To use this option, you should have
- devpts or devfs mounted.
+ devpts mounted.
-config CONFIG_FEATURE_CLEAN_UP
+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 by default does not cleanup memory
- that is dynamically allocated or close files before exiting. This
- saves space and is usually not needed since the OS will clean up for
- us. Don't enable this unless you have a really good reason to clean
+ As a size optimization, busybox normally exits without explicitly
+ freeing dynamically allocated memory or closing files. This saves
+ space since the OS will clean up for us, but it can confuse debuggers
+ like valgrind, which report tons of memory and resource leaks.
+
+ Don't enable this unless you have a really good reason to clean
things up manually.
-config CONFIG_FEATURE_SUID
- bool "Support for SUID/SGID handling"
+config FEATURE_PIDFILE
+ bool "Support writing pidfiles"
default n
help
- Support SUID and SGID binaries.
+ This option makes some applets (e.g. crond, syslogd, inetd) write
+ a pidfile in /var/run. Some applications rely on them.
-config CONFIG_FEATURE_SUID_CONFIG
+config FEATURE_SUID
+ bool "Support for SUID/SGID handling"
+ default n
+ help
+ With this option you can install the busybox binary belonging
+ to root with the suid bit set, and it'll and it'll automatically drop
+ priviledges for applets that don't need root access.
+
+ If you're really paranoid and don't want to do this, build two
+ busybox binaries with different applets in them (and the appropriate
+ symlinks pointing to each binary), and only set the suid bit on the
+ one that needs it. The applets currently marked to need the suid bit
+ are login, passwd, su, ping, traceroute, crontab, dnsd, ipcrm, ipcs,
+ and vlock.
+
+config FEATURE_SUID_CONFIG
bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
- default n if CONFIG_FEATURE_SUID
- depends on CONFIG_FEATURE_SUID
+ default n if FEATURE_SUID
+ depends on FEATURE_SUID
help
- Allow the SUID / SGID state of an applet to be determined runtime by
- checking /etc/busybox.conf. The format of this file is as follows:
+ Allow the SUID / SGID state of an applet to be determined at runtime
+ by checking /etc/busybox.conf. (This is sort of a poor man's sudo.)
+ The format of this file is as follows:
<applet> = [Ssx-][Ssx-][x-] (<username>|<uid>).(<groupname>|<gid>)
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 >.
-config CONFIG_FEATURE_SUID_CONFIG_QUIET
+config FEATURE_SUID_CONFIG_QUIET
bool "Suppress warning message if /etc/busybox.conf is not readable"
- default n
- depends on CONFIG_FEATURE_SUID_CONFIG
+ default y
+ depends on FEATURE_SUID_CONFIG
help
/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 CONFIG_SELINUX
+config SELINUX
bool "Support NSA Security Enhanced Linux"
default n
help
- Enable support for SE Linux in applets ls, ps, and id. Also provide
- the option of compiling in SE Linux applets.
+ Enable support for SELinux in applets ls, ps, and id. Also provide
+ the option of compiling in SELinux applets.
- If you do not have a complete SE Linux Full Userland installed, this
- stuff will not compile. Go visit
+ If you do not have a complete SELinux userland installed, this stuff
+ will not compile. Go visit
http://www.nsa.gov/selinux/index.html
- to download the necessary stuff to allow busybox to compile with this
- option enabled.
+ to download the necessary stuff to allow busybox to compile with
+ this option enabled. Specifially, libselinux 1.28 or better is
+ directly required by busybox. If the installation is located in a
+ non-standard directory, provide it by invoking make as follows:
+ CFLAGS=-I<libselinux-include-path> \
+ LDFLAGS=-L<libselinux-lib-path> \
+ make
Most people will leave this set to 'N'.
+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 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"
+ default "/proc/self/exe"
+ help
+ When Busybox applets need to run other busybox applets, BusyBox
+ sometimes needs to exec() itself. When the /proc filesystem is
+ mounted, /proc/self/exe always points to the currently running
+ 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'
-config CONFIG_STATIC
+config STATIC
bool "Build BusyBox as a static binary (no shared libs)"
default n
help
Most people will leave this set to 'N'.
-config CONFIG_BUILD_LIBBUSYBOX
- bool "Build shared libbusybox"
- default y
+config NOMMU
+ bool "Force NOMMU build"
+ default n
help
- Build a shared library libbusybox.so which contains all
- libraries used inside busybox.
+ 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.
+
+ Most people will leave this set to 'N'.
-config CONFIG_FEATURE_FULL_LIBBUSYBOX
- bool "Feature-complete libbusybox"
- default n if !CONFIG_FEATURE_SHARED_BUSYBOX
- depends on CONFIG_BUILD_LIBBUSYBOX
+config BUILD_LIBBUSYBOX
+ bool "Build shared libbusybox"
+ default n
+ depends on !FEATURE_PREFER_APPLETS
help
- Build a libbusybox with the complete feature-set, disregarding
- the actually selected config.
+ 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 !STATIC && BUILD_LIBBUSYBOX
+ help
+ 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 CONFIG_FEATURE_SHARED_BUSYBOX
- bool "Use shared libbusybox for busybox"
- default y if CONFIG_BUILD_LIBBUSYBOX
- depends on !CONFIG_STATIC && CONFIG_BUILD_LIBBUSYBOX
+config FEATURE_SHARED_BUSYBOX
+ bool "Produce additional busybox binary linked against libbusybox"
+ default y
+ depends on !STATIC && BUILD_LIBBUSYBOX
help
- Use libbusybox.so also for busybox itself.
- You need to have a working dynamic linker to use this variant.
-
-config CONFIG_LFS
+ 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)"
default n
select FDISK_SUPPORT_LARGE_DISKS
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 USING_CROSS_COMPILER
- bool "Do you want to build BusyBox with a Cross Compiler?"
- default n
- help
- Do you want to build BusyBox with a Cross Compiler? If so,
- then enable this option. Otherwise leave it set to 'N'.
-
-config CROSS_COMPILER_PREFIX
- string "Cross Compiler prefix"
- default "/usr/i386-linux-uclibc/bin/i386-uclibc-"
- depends on USING_CROSS_COMPILER
- help
- If you want to build BusyBox with a cross compiler, then you
- will need to set this to the cross-compiler prefix. For example,
- if my cross-compiler is /usr/i386-linux-uclibc/bin/i386-uclibc-gcc
- then I would enter '/usr/i386-linux-uclibc/bin/i386-uclibc-' here,
- which will ensure the correct compiler is used.
-
-config EXTRA_CFLAGS_OPTIONS
- string "Any extra CFLAGS options for the compiler?"
- default ""
- help
- Do you want to pass any extra CFLAGS options to the compiler as
- you build BusyBox? If so, this is the option for you... For example,
- if you want to add some simple compiler switches (like -march=i686),
- or check for warnings using -Werror, just those options here.
-
-config 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.
-
endmenu
-menu 'Installation Options'
+menu 'Debugging Options'
-config CONFIG_INSTALL_NO_USR
- bool "Don't use /usr"
+config DEBUG
+ bool "Build BusyBox with extra Debugging symbols"
default n
help
- Disable use of /usr. Don't activate this option if you don't know
- that you really want this behaviour.
-
-choice
- prompt "Applets links"
- default CONFIG_INSTALL_APPLET_SYMLINKS
- help
- Choose how you install applets links.
-
-config CONFIG_INSTALL_APPLET_SYMLINKS
- bool "as soft-links"
- help
- Install applets as soft-links to the busybox binary. This needs some
- free inodes on the filesystem, but might help with filesystem
- generators that can't cope with hard-links.
-
-config CONFIG_INSTALL_APPLET_HARDLINKS
- bool "as hard-links"
- help
- Install applets as hard-links to the busybox binary. This might count
- on a filesystem with few inodes.
-
-config CONFIG_INSTALL_APPLET_DONT
- bool
- prompt "not installed"
- depends on CONFIG_FEATURE_INSTALLER || CONFIG_FEATURE_SH_STANDALONE_SHELL
- help
- Do not install applets links. Usefull when using the -install feature
- or a standalone shell for rescue pruposes.
-
-endchoice
-
-config PREFIX
- string "BusyBox installation prefix"
- default "./_install"
- help
- Define your directory to install BusyBox files/subdirs in.
-
-endmenu
-
-source archival/Config.in
-source coreutils/Config.in
-source console-tools/Config.in
-source debianutils/Config.in
-source editors/Config.in
-source findutils/Config.in
-source init/Config.in
-source loginutils/Config.in
-source e2fsprogs/Config.in
-source modutils/Config.in
-source util-linux/Config.in
-source miscutils/Config.in
-source networking/Config.in
-source procps/Config.in
-source shell/Config.in
-source sysklogd/Config.in
+ Say Y here if you wish to examine BusyBox internals while applets are
+ running. This increases the size of the binary considerably, and
+ should only be used when doing development. If you are doing
+ development and want to debug BusyBox, answer Y.
-menu 'Debugging Options'
+ Most people should answer N.
-config CONFIG_DEBUG
- bool "Build BusyBox with Debugging symbols"
+config WERROR
+ bool "Abort compilation on any warning"
default n
help
- Say Y here if you wish to compile BusyBox with debugging symbols.
- This will allow you to use a debugger to examine BusyBox internals
- while applets are running. This increases the size of the binary
- considerably and should only be used when doing development.
- If you are doing development and want to debug BusyBox, answer Y.
+ Selecting this will add -Werror to gcc command line.
Most people should answer N.
+# Seems to be unused
+#config DEBUG_PESSIMIZE
+# bool "Disable compiler optimizations."
+# default n
+# depends on DEBUG
+# help
+# The compiler's optimization of source code can eliminate and reorder
+# code, resulting in an executable that's hard to understand when
+# stepping through it with a debugger. This switches it off, resulting
+# in a much bigger executable that more closely matches the source
+# code.
+
choice
prompt "Additional debugging library"
- default CONFIG_NO_DEBUG_LIB
- depends on CONFIG_DEBUG
+ default NO_DEBUG_LIB
help
Using an additional debugging library will make BusyBox become
considerable larger and will cause it to run more slowly. You
you are hunting a hard to find memory problem.
-config CONFIG_NO_DEBUG_LIB
+config NO_DEBUG_LIB
bool "None"
-config CONFIG_DMALLOC
+config DMALLOC
bool "Dmalloc"
-config CONFIG_EFENCE
+config EFENCE
bool "Electric-fence"
endchoice
-config CONFIG_DEBUG_YANK_SUSv2
- bool "Disable obsolete features removed before SUSv3?"
+config INCLUDE_SUSv2
+ bool "Enable obsolete features removed before SUSv3?"
default y
help
- This option will disable backwards compatability with SuSv2,
+ This option will enable backwards compatibility with SuSv2,
specifically, old-style numeric options ('command -1 <file>')
- will not be supported in head, tail, and fold. (Note: should
- yank from renice too.)
+ will be supported in head, tail, and fold. (Note: should
+ affect renice too.)
+
+endmenu
+
+menu 'Installation Options'
+
+config INSTALL_NO_USR
+ bool "Don't use /usr"
+ default n
+ help
+ Disable use of /usr. Don't activate this option if you don't know
+ that you really want this behaviour.
+
+choice
+ prompt "Applets links"
+ default INSTALL_APPLET_SYMLINKS
+ help
+ Choose how you install applets links.
+
+config INSTALL_APPLET_SYMLINKS
+ bool "as soft-links"
+ help
+ Install applets as soft-links to the busybox binary. This needs some
+ free inodes on the filesystem, but might help with filesystem
+ generators that can't cope with hard-links.
+
+config INSTALL_APPLET_HARDLINKS
+ bool "as hard-links"
+ help
+ 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 || FEATURE_PREFER_APPLETS
+ help
+ Do not install applet links. Useful when using the -install feature
+ 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
+
+config PREFIX
+ string "BusyBox installation prefix"
+ default "./_install"
+ help
+ Define your directory to install BusyBox files/subdirs in.
+
+endmenu
+
+source libbb/Config.in
endmenu
+
+comment "Applets"
+
+source archival/Config.in
+source coreutils/Config.in
+source console-tools/Config.in
+source debianutils/Config.in
+source editors/Config.in
+source findutils/Config.in
+source init/Config.in
+source loginutils/Config.in
+source e2fsprogs/Config.in
+source modutils/Config.in
+source util-linux/Config.in
+source miscutils/Config.in
+source networking/Config.in
+source procps/Config.in
+source shell/Config.in
+source sysklogd/Config.in
+source runit/Config.in
+source selinux/Config.in
+source printutils/Config.in
+source ipsvd/Config.in
projects / oweals / busybox.git / blobdiff