endchoice
config SHOW_USAGE
- bool "Show terse applet usage messages"
+ bool "Show 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.
+ Enabling this option, BusyBox applets will show terse help messages
+ when invoked with wrong arguments.
+ If you do not want to show any (helpful) usage message when
+ issuing wrong command syntax, you can say 'N' here,
+ saving approximately 7k.
config FEATURE_VERBOSE_USAGE
bool "Show verbose applet usage messages"
default y
depends on SHOW_USAGE
help
- All BusyBox applets will show more verbose help messages when
+ All BusyBox applets will show 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.
default y
depends on SHOW_USAGE
help
- Store usage messages in compressed form, uncompress them on-the-fly
- when <applet> --help is called.
+ Store usage messages in .bz 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
Internal implementation is smaller.
config FEATURE_CHECK_UNICODE_IN_ENV
- bool "Check $LANG environment variable"
+ bool "Check $LC_ALL, $LC_CTYPE and $LANG environment variables"
default n
depends on UNICODE_SUPPORT && !UNICODE_USING_LOCALE
help
With this option on, Unicode support is activated
- only if LANG variable has the value of the form "xxxx.utf8"
+ only if locale-related variables have the value of the form
+ "xxxx.utf8"
Otherwise, Unicode support will be always enabled and active.
at shell prompt will list file named 0xff (single char name
with char value 255), not file named '?'.
+config PAM
+ bool "Support for PAM (Pluggable Authentication Modules)"
+ default n
+ help
+ Use PAM in some busybox applets (currently login and httpd) instead
+ of direct access to password database.
+
+config FEATURE_USE_SENDFILE
+ bool "Use sendfile system call"
+ default y
+ select PLATFORM_LINUX
+ help
+ When enabled, busybox will use the kernel sendfile() function
+ instead of read/write loops to copy data between file descriptors
+ (for example, cp command does this a lot).
+ If sendfile() doesn't work, copying code falls back to read/write
+ loop. sendfile() was originally implemented for faster I/O
+ from files to sockets, but since Linux 2.6.33 it was extended
+ to work for many more file types.
+
config LONG_OPTS
bool "Support for --long-options"
default y
default y
help
This option makes some applets (e.g. crond, syslogd, inetd) write
- a pidfile in /var/run. Some applications rely on them.
+ a pidfile at the configured PID_FILE_PATH. It has no effect
+ on applets which require pidfiles to run.
+
+config PID_FILE_PATH
+ string "Path to directory for pidfile"
+ default "/var/run"
+ depends on FEATURE_PIDFILE
+ help
+ This is the default path where pidfiles are created. Applets which
+ allow you to set the pidfile path on the command line will override
+ this value. The option has no effect on applets that require you to
+ specify a pidfile path.
config FEATURE_SUID
bool "Support for SUID/SGID handling"
root-level operations even when run by ordinary users
(for example, mounting of user mounts in fstab needs this).
- Busybox will automatically drop priviledges for applets
+ Busybox will automatically drop privileges for applets
that don't need root access.
If you are really paranoid and don't want to do this, build two
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>)
+ APPLET = [Ssx-][Ssx-][x-] [USER.GROUP]
+
+ s: USER or GROUP is allowed to execute APPLET.
+ APPLET will run under USER or GROUP
+ (reagardless of who's running it).
+ S: USER or GROUP is NOT allowed to execute APPLET.
+ APPLET will run under USER or GROUP.
+ This option is not very sensical.
+ x: USER/GROUP/others are allowed to execute APPLET.
+ No UID/GID change will be done when it is run.
+ -: USER/GROUP/others are not allowed to execute APPLET.
An example might help:
su = ssx # exactly the same
mount = sx- root.disk # applet mount can be run by root and members
- # of group disk and runs with euid=0
+ # of group disk (but not anyone else)
+ # and runs with euid=0 (egid is not changed)
cp = --- # disable applet cp for everyone
the option of compiling in SELinux applets.
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. Specifially, libselinux 1.28 or better is
+ will not compile. 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> \
Native builds leave this empty.
+config SYSROOT
+ string "Path to sysroot"
+ default ""
+ help
+ If you want to build BusyBox with a cross compiler, then you
+ might also need to specify where /usr/include and /usr/lib
+ will be found.
+
+ For example, BusyBox can be built against an installed
+ Android NDK, platform version 9, for ARM ABI with
+
+ CONFIG_SYSROOT=/opt/android-ndk/platforms/android-9/arch-arm
+
+ Native builds leave this empty.
+
config EXTRA_CFLAGS
string "Additional CFLAGS"
default ""
help
Additional CFLAGS to pass to the compiler verbatim.
+config EXTRA_LDFLAGS
+ string "Additional LDFLAGS"
+ default ""
+ help
+ Additional LDFLAGS to pass to the linker verbatim.
+
+config EXTRA_LDLIBS
+ string "Additional LDLIBS"
+ default ""
+ help
+ Additional LDLIBS to pass to the linker with -l.
+
endmenu
menu 'Debugging Options'
in a much bigger executable that more closely matches the source
code.
+config UNIT_TEST
+ bool "Build unit tests"
+ default n
+ help
+ Say Y here if you want to build unit tests (both the framework and
+ test cases) as a Busybox applet. This results in bigger code, so you
+ probably don't want this option in production builds.
+
config WERROR
bool "Abort compilation on any warning"
default n
endchoice
-### config PARSE
-### bool "Uniform config file parser debugging applet: parse"
-
endmenu
menu 'Installation Options ("make install" behavior)'
projects / oweals / busybox.git / blobdiff