menu "General Configuration"
+config BUSYBOX_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.
+
choice
prompt "Buffer allocation policy"
default BUSYBOX_CONFIG_FEATURE_BUFFERS_GO_ON_STACK
+ depends on BUSYBOX_CONFIG_NITPICK
help
There are 3 ways BusyBox can handle buffer allocations:
- Use malloc. This costs code size for the call to xmalloc.
endchoice
+config BUSYBOX_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 BUSYBOX_CONFIG_FEATURE_VERBOSE_USAGE
bool "Show verbose applet usage messages"
default y
+ select BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_FEATURE_COMPRESS_USAGE
+ bool "Store applet usage messages in compressed form"
+ default n
+ depends on BUSYBOX_CONFIG_SHOW_USAGE && BUSYBOX_CONFIG_NITPICK
+ 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 BUSYBOX_CONFIG_FEATURE_INSTALLER
bool "Support --install [-s] to install applet links at runtime"
default n
Enable this if your system has locale support and you would like
busybox to support locale settings.
-config BUSYBOX_CONFIG_FEATURE_DEVFS
- bool "Support for devfs"
+config BUSYBOX_CONFIG_GETOPT_LONG
+ bool
default y
- help
- Enable if you want BusyBox to work with devfs.
+# bool "Enable support for --long-options"
+# default n
+# help
+# 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 BUSYBOX_CONFIG_FEATURE_DEVPTS
bool "Use the devpts filesystem for Unix98 PTYs"
- default y if BUSYBOX_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 BUSYBOX_CONFIG_FEATURE_CLEAN_UP
bool "Clean up all memory before exiting (usually not needed)"
default n
+ depends on BUSYBOX_CONFIG_NITPICK
help
As a size optimization, busybox normally exits without explicitly
freeing dynamically allocated memory or closing files. This saves
bool "Support for SUID/SGID handling"
default y
help
- Support SUID and SGID binaries.
+ 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 BUSYBOX_CONFIG_FEATURE_SUID_CONFIG
bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
default n if BUSYBOX_CONFIG_FEATURE_SUID
depends on BUSYBOX_CONFIG_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>)
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 BUSYBOX_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.
+
endmenu
menu 'Build Options'
Most people will leave this set to 'N'.
-# The busybox shared library feature is there so make standalone can produce
-# smaller applets. Since make standalone isn't in yet, there's nothing using
-# this yet, and so it's disabled.
-config BUSYBOX_CONFIG_DISABLE_SHARED
- bool
- default n
-
config BUSYBOX_CONFIG_BUILD_LIBBUSYBOX
bool "Build shared libbusybox"
default n
- depends on BUSYBOX_CONFIG_DISABLE_SHARED
help
Build a shared library libbusybox.so which contains all
libraries used inside busybox.
+ 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 BUSYBOX_CONFIG_FEATURE_FULL_LIBBUSYBOX
bool "Feature-complete libbusybox"
default n if !CONFIG_FEATURE_SHARED_BUSYBOX
then I would enter '/usr/i386-linux-uclibc/bin/i386-uclibc-' here,
which will ensure the correct compiler is used.
-config BUSYBOX_EXTRA_CFLAGS_OPTIONS
- string
- default "-Os "
- 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 BUSYBOX_CONFIG_BUILD_AT_ONCE
bool "Compile all sources at once"
default n
menu 'Debugging Options'
config BUSYBOX_CONFIG_DEBUG
- bool "Build BusyBox with Debugging symbols"
+ bool "Build BusyBox with extra Debugging symbols"
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.
+ 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.
Most people should answer N.
+config BUSYBOX_CONFIG_DEBUG_PESSIMIZE
+ bool "Disable compiler optimizations."
+ default n
+ depends on BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_NO_DEBUG_LIB
bool "Disable obsolete features removed before SUSv3?"
default y
help
- This option will disable backwards compatability with SuSv2,
+ This option will disable 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.)
projects / openwrt.git / blobdiff