source: drbl_ui/backup/test_busybox/busybox-1.7.2/Config.in @ 158

#
# For a description of the syntax of this configuration file,
# see scripts/kbuild/config-language.txt.
#

mainmenu "BusyBox Configuration"

config HAVE_DOT_CONFIG
  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 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.
    - Put them on stack. For some very small machines with limited stack
      space, this can be deadly.  For most folks, this works just fine.
    - Put them in BSS. This works beautifully for computers with a real
      MMU (and OS support), but wastes runtime RAM for uCLinux. This
      behavior was the only one available for BusyBox versions 0.48 and
      earlier.

config FEATURE_BUFFERS_USE_MALLOC
  bool "Allocate with Malloc"

config FEATURE_BUFFERS_GO_ON_STACK
  bool "Allocate on the Stack"

config FEATURE_BUFFERS_GO_IN_BSS
  bool "Allocate in the .bss section"

endchoice

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 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.

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 GETOPT_LONG
  bool "Enable support for --long-options"
  default y
  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 FEATURE_DEVPTS
  bool "Use the devpts filesystem for Unix98 PTYs"
  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 mounted.

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
    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 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
  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 FEATURE_SUID
  depends on FEATURE_SUID
  help
    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>)

    An example might help:

    [SUID]
    su = ssx root.0 # applet su can be run by anyone and runs with euid=0/egid=0
    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

    cp = --- # disable applet cp for everyone

    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)
    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)

    Robert 'sandman' Griebl has more information here:
    <url: http://www.softforge.de/bb/suid.html >.

config FEATURE_SUID_CONFIG_QUIET
  bool "Suppress warning message if /etc/busybox.conf is not readable"
  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 SELINUX
  bool "Support NSA Security Enhanced Linux"
  default n
  help
    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 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
    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 STATIC
  bool "Build BusyBox as a static binary (no shared libs)"
  default n
  help
    If you want to build a static BusyBox binary, which does not
    use or require any shared libraries, then enable this option.
    This can cause BusyBox to be considerably larger, so you should
    leave this option false unless you have a good reason (i.e.
    your target platform does not support shared libraries, or
    you are building an initrd which doesn't need anything but
    BusyBox, etc).

    Most people will leave this set to 'N'.

config BUILD_LIBBUSYBOX
  bool "Build shared libbusybox"
  default n
  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 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_SHARED_BUSYBOX
  bool "Use shared libbusybox for busybox"
  default y if BUILD_LIBBUSYBOX
  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 LFS
  bool "Build with Large File Support (for accessing files > 2 GB)"
  default n
  select FDISK_SUPPORT_LARGE_DISKS
  help
    If you want to build BusyBox with large file support, then enable
    this option.  This will have no effect if your kernel or your C
    library lacks large file support for large files.  Some of the
    programs that can benefit from large file support include dd, gzip,
    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
  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 'Debugging Options'

config DEBUG
  bool "Build BusyBox with extra Debugging symbols"
  default n
  help
    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 WERROR
  bool "Abort compilation on any warning"
  default n
  help
    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 NO_DEBUG_LIB
  help
    Using an additional debugging library will make BusyBox become
    considerable larger and will cause it to run more slowly.  You
    should always leave this option disabled for production use.

    dmalloc support:
    ----------------
    This enables compiling with dmalloc ( http://dmalloc.com/ )
    which is an excellent public domain mem leak and malloc problem
    detector.  To enable dmalloc, before running busybox you will
    want to properly set your environment, for example:
      export DMALLOC_OPTIONS=debug=0x34f47d83,inter=100,log=logfile
    The 'debug=' value is generated using the following command
      dmalloc -p log-stats -p log-non-free -p log-bad-space -p log-elapsed-time \
         -p check-fence -p check-heap -p check-lists -p check-blank \
         -p check-funcs -p realloc-copy -p allow-free-null

    Electric-fence support:
    -----------------------
    This enables compiling with Electric-fence support.  Electric
    fence is another very useful malloc debugging library which uses
    your computer's virtual memory hardware to detect illegal memory
    accesses.  This support will make BusyBox be considerable larger
    and run slower, so you should leave this option disabled unless
    you are hunting a hard to find memory problem.


config NO_DEBUG_LIB
  bool "None"

config DMALLOC
  bool "Dmalloc"

config EFENCE
  bool "Electric-fence"

endchoice

config INCLUDE_SUSv2
  bool "Enable obsolete features removed before SUSv3?"
  default y
  help
    This option will enable backwards compatibility with SuSv2,
    specifically, old-style numeric options ('command -1 <file>')
    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_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

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 ipsvd/Config.in