package/busybox/config/Config.in

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see scripts/kbuild/config-language.txt.
   4 #
   5
   6
   7 config BUSYBOX_CONFIG_HAVE_DOT_CONFIG
   8         bool
   9         default y
  10
  11 menu "Busybox Settings"
  12
  13 menu "General Configuration"
  14
  15 config BUSYBOX_CONFIG_DESKTOP
  16         bool "Enable options for full-blown desktop systems"
  17         default n
  18         help
  19           Enable options and features which are not essential.
  20           Select this only if you plan to use busybox on full-blown
  21           desktop machine with common Linux distro, not on an embedded box.
  22
  23 config BUSYBOX_CONFIG_EXTRA_COMPAT
  24         bool "Provide compatible behavior for rare corner cases (bigger code)"
  25         default n
  26         help
  27           This option makes grep, sed etc handle rare corner cases
  28           (embedded NUL bytes and such). This makes code bigger and uses
  29           some GNU extensions in libc. You probably only need this option
  30           if you plan to run busybox on desktop.
  31
  32 config BUSYBOX_CONFIG_INCLUDE_SUSv2
  33         bool "Enable obsolete features removed before SUSv3"
  34         default y
  35         help
  36           This option will enable backwards compatibility with SuSv2,
  37           specifically, old-style numeric options ('command -1 <file>')
  38           will be supported in head, tail, and fold. (Note: should
  39           affect renice too.)
  40
  41 config BUSYBOX_CONFIG_USE_PORTABLE_CODE
  42         bool "Avoid using GCC-specific code constructs"
  43         default n
  44         help
  45           Use this option if you are trying to compile busybox with
  46           compiler other than gcc.
  47           If you do use gcc, this option may needlessly increase code size.
  48
  49 config BUSYBOX_CONFIG_PLATFORM_LINUX
  50         bool "Enable Linux-specific applets and features"
  51         default y
  52         help
  53           For the most part, busybox requires only POSIX compatibility
  54           from the target system, but some applets and features use
  55           Linux-specific interfaces.
  56
  57           Answering 'N' here will disable such applets and hide the
  58           corresponding configuration options.
  59
  60 choice
  61         prompt "Buffer allocation policy"
  62         default BUSYBOX_CONFIG_FEATURE_BUFFERS_GO_ON_STACK
  63         help
  64           There are 3 ways BusyBox can handle buffer allocations:
  65           - Use malloc. This costs code size for the call to xmalloc.
  66           - Put them on stack. For some very small machines with limited stack
  67             space, this can be deadly. For most folks, this works just fine.
  68           - Put them in BSS. This works beautifully for computers with a real
  69             MMU (and OS support), but wastes runtime RAM for uCLinux. This
  70             behavior was the only one available for BusyBox versions 0.48 and
  71             earlier.
  72
  73 config BUSYBOX_CONFIG_FEATURE_BUFFERS_USE_MALLOC
  74         bool "Allocate with Malloc"
  75
  76 config BUSYBOX_CONFIG_FEATURE_BUFFERS_GO_ON_STACK
  77         bool "Allocate on the Stack"
  78
  79 config BUSYBOX_CONFIG_FEATURE_BUFFERS_GO_IN_BSS
  80         bool "Allocate in the .bss section"
  81
  82 endchoice
  83
  84 config BUSYBOX_CONFIG_SHOW_USAGE
  85         bool "Show terse applet usage messages"
  86         default y
  87         help
  88           All BusyBox applets will show help messages when invoked with
  89           wrong arguments. You can turn off printing these terse usage
  90           messages if you say no here.
  91           This will save you up to 7k.
  92
  93 config BUSYBOX_CONFIG_FEATURE_VERBOSE_USAGE
  94         bool "Show verbose applet usage messages"
  95         default y
  96         depends on BUSYBOX_CONFIG_SHOW_USAGE
  97         help
  98           All BusyBox applets will show more verbose help messages when
  99           busybox is invoked with --help. This will add a lot of text to the
 100           busybox binary. In the default configuration, this will add about
 101           13k, but it can add much more depending on your configuration.
 102
 103 config BUSYBOX_CONFIG_FEATURE_COMPRESS_USAGE
 104         bool "Store applet usage messages in compressed form"
 105         default y
 106         depends on BUSYBOX_CONFIG_SHOW_USAGE
 107         help
 108           Store usage messages in compressed form, uncompress them on-the-fly
 109           when <applet> --help is called.
 110
 111           If you have a really tiny busybox with few applets enabled (and
 112           bunzip2 isn't one of them), the overhead of the decompressor might
 113           be noticeable. Also, if you run executables directly from ROM
 114           and have very little memory, this might not be a win. Otherwise,
 115           you probably want this.
 116
 117 config BUSYBOX_CONFIG_FEATURE_INSTALLER
 118         bool "Support --install [-s] to install applet links at runtime"
 119         default n
 120         help
 121           Enable 'busybox --install [-s]' support. This will allow you to use
 122           busybox at runtime to create hard links or symlinks for all the
 123           applets that are compiled into busybox.
 124
 125 config BUSYBOX_CONFIG_INSTALL_NO_USR
 126         bool "Don't use /usr"
 127         default n
 128         help
 129           Disable use of /usr. busybox --install and "make install"
 130           will install applets only to /bin and /sbin,
 131           never to /usr/bin or /usr/sbin.
 132
 133 config BUSYBOX_CONFIG_LOCALE_SUPPORT
 134         bool "Enable locale support (system needs locale for this to work)"
 135         default n
 136         help
 137           Enable this if your system has locale support and you would like
 138           busybox to support locale settings.
 139
 140 config BUSYBOX_CONFIG_UNICODE_SUPPORT
 141         bool "Support Unicode"
 142         default n
 143         help
 144           This makes various applets aware that one byte is not
 145           one character on screen.
 146
 147           Busybox aims to eventually work correctly with Unicode displays.
 148           Any older encodings are not guaranteed to work.
 149           Probably by the time when busybox will be fully Unicode-clean,
 150           other encodings will be mainly of historic interest.
 151
 152 config BUSYBOX_CONFIG_UNICODE_USING_LOCALE
 153         bool "Use libc routines for Unicode (else uses internal ones)"
 154         default n
 155         depends on BUSYBOX_CONFIG_UNICODE_SUPPORT && BUSYBOX_CONFIG_LOCALE_SUPPORT
 156         help
 157           With this option on, Unicode support is implemented using libc
 158           routines. Otherwise, internal implementation is used.
 159           Internal implementation is smaller.
 160
 161 config BUSYBOX_CONFIG_FEATURE_CHECK_UNICODE_IN_ENV
 162         bool "Check $LANG environment variable"
 163         default n
 164         depends on BUSYBOX_CONFIG_UNICODE_SUPPORT && !BUSYBOX_CONFIG_UNICODE_USING_LOCALE
 165         help
 166           With this option on, Unicode support is activated
 167           only if LANG variable has the value of the form "xxxx.utf8"
 168
 169           Otherwise, Unicode support will be always enabled and active.
 170
 171 config BUSYBOX_CONFIG_SUBST_WCHAR
 172         int "Character code to substitute unprintable characters with"
 173         depends on BUSYBOX_CONFIG_UNICODE_SUPPORT
 174         default 63
 175         help
 176           Typical values are 63 for '?' (works with any output device),
 177           30 for ASCII substitute control code,
 178           65533 (0xfffd) for Unicode replacement character.
 179
 180 config BUSYBOX_CONFIG_LAST_SUPPORTED_WCHAR
 181         int "Range of supported Unicode characters"
 182         depends on BUSYBOX_CONFIG_UNICODE_SUPPORT
 183         default 767
 184         help
 185           Any character with Unicode value bigger than this is assumed
 186           to be non-printable on output device. Many applets replace
 187           such chars with substitution character.
 188
 189           The idea is that many valid printable Unicode chars are
 190           nevertheless are not displayed correctly. Think about
 191           combining charachers, double-wide hieroglyphs, obscure
 192           characters in dozens of ancient scripts...
 193           Many terminals, terminal emulators, xterms etc will fail
 194           to handle them correctly. Choose the smallest value
 195           which suits your needs.
 196
 197           Typical values are:
 198           126 - ASCII only
 199           767 (0x2ff) - there are no combining chars in [0..767] range
 200                         (the range includes Latin 1, Latin Ext. A and B),
 201                         code is ~700 bytes smaller for this case.
 202           4351 (0x10ff) - there are no double-wide chars in [0..4351] range,
 203                         code is ~300 bytes smaller for this case.
 204           12799 (0x31ff) - nearly all non-ideographic characters are
 205                         available in [0..12799] range, including
 206                         East Asian scripts like katakana, hiragana, hangul,
 207                         bopomofo...
 208           0 - off, any valid printable Unicode character will be printed.
 209
 210 config BUSYBOX_CONFIG_UNICODE_COMBINING_WCHARS
 211         bool "Allow zero-width Unicode characters on output"
 212         default n
 213         depends on BUSYBOX_CONFIG_UNICODE_SUPPORT
 214         help
 215           With this option off, any Unicode char with width of 0
 216           is substituted on output.
 217
 218 config BUSYBOX_CONFIG_UNICODE_WIDE_WCHARS
 219         bool "Allow wide Unicode characters on output"
 220         default n
 221         depends on BUSYBOX_CONFIG_UNICODE_SUPPORT
 222         help
 223           With this option off, any Unicode char with width > 1
 224           is substituted on output.
 225
 226 config BUSYBOX_CONFIG_UNICODE_BIDI_SUPPORT
 227         bool "Bidirectional character-aware line input"
 228         default n
 229         depends on BUSYBOX_CONFIG_UNICODE_SUPPORT && !BUSYBOX_CONFIG_UNICODE_USING_LOCALE
 230         help
 231           With this option on, right-to-left Unicode characters
 232           are treated differently on input (e.g. cursor movement).
 233
 234 config BUSYBOX_CONFIG_UNICODE_NEUTRAL_TABLE
 235         bool "In bidi input, support non-ASCII neutral chars too"
 236         default n
 237         depends on BUSYBOX_CONFIG_UNICODE_BIDI_SUPPORT
 238         help
 239           In most cases it's enough to treat only ASCII non-letters
 240           (i.e. punctuation, numbers and space) as characters
 241           with neutral directionality.
 242           With this option on, more extensive (and bigger) table
 243           of neutral chars will be used.
 244
 245 config BUSYBOX_CONFIG_UNICODE_PRESERVE_BROKEN
 246         bool "Make it possible to enter sequences of chars which are not Unicode"
 247         default n
 248         depends on BUSYBOX_CONFIG_UNICODE_SUPPORT
 249         help
 250           With this option on, on line-editing input (such as used by shells)
 251           invalid UTF-8 bytes are not substituted with the selected
 252           substitution character.
 253           For example, this means that entering 'l', 's', ' ', 0xff, [Enter]
 254           at shell prompt will list file named 0xff (single char name
 255           with char value 255), not file named '?'.
 256
 257 config BUSYBOX_CONFIG_LONG_OPTS
 258         bool "Support for --long-options"
 259         default y
 260         help
 261           Enable this if you want busybox applets to use the gnu --long-option
 262           style, in addition to single character -a -b -c style options.
 263
 264 config BUSYBOX_CONFIG_FEATURE_DEVPTS
 265         bool "Use the devpts filesystem for Unix98 PTYs"
 266         default y
 267         help
 268           Enable if you want BusyBox to use Unix98 PTY support. If enabled,
 269           busybox will use /dev/ptmx for the master side of the pseudoterminal
 270           and /dev/pts/<number> for the slave side. Otherwise, BSD style
 271           /dev/ttyp<number> will be used. To use this option, you should have
 272           devpts mounted.
 273
 274 config BUSYBOX_CONFIG_FEATURE_CLEAN_UP
 275         bool "Clean up all memory before exiting (usually not needed)"
 276         default n
 277         help
 278           As a size optimization, busybox normally exits without explicitly
 279           freeing dynamically allocated memory or closing files. This saves
 280           space since the OS will clean up for us, but it can confuse debuggers
 281           like valgrind, which report tons of memory and resource leaks.
 282
 283           Don't enable this unless you have a really good reason to clean
 284           things up manually.
 285
 286 config BUSYBOX_CONFIG_FEATURE_UTMP
 287         bool "Support utmp file"
 288         default n
 289         help
 290           The file /var/run/utmp is used to track who is currently logged in.
 291           With this option on, certain applets (getty, login, telnetd etc)
 292           will create and delete entries there.
 293           "who" applet requires this option.
 294
 295 config BUSYBOX_CONFIG_FEATURE_WTMP
 296         bool "Support wtmp file"
 297         default n
 298         depends on BUSYBOX_CONFIG_FEATURE_UTMP
 299         help
 300           The file /var/run/wtmp is used to track when users have logged into
 301           and logged out of the system.
 302           With this option on, certain applets (getty, login, telnetd etc)
 303           will append new entries there.
 304           "last" applet requires this option.
 305
 306 config BUSYBOX_CONFIG_FEATURE_PIDFILE
 307         bool "Support writing pidfiles"
 308         default y
 309         help
 310           This option makes some applets (e.g. crond, syslogd, inetd) write
 311           a pidfile in /var/run. Some applications rely on them.
 312
 313 config BUSYBOX_CONFIG_FEATURE_SUID
 314         bool "Support for SUID/SGID handling"
 315         default y
 316         help
 317           With this option you can install the busybox binary belonging
 318           to root with the suid bit set, enabling some applets to perform
 319           root-level operations even when run by ordinary users
 320           (for example, mounting of user mounts in fstab needs this).
 321
 322           Busybox will automatically drop priviledges for applets
 323           that don't need root access.
 324
 325           If you are really paranoid and don't want to do this, build two
 326           busybox binaries with different applets in them (and the appropriate
 327           symlinks pointing to each binary), and only set the suid bit on the
 328           one that needs it.
 329
 330           The applets which require root rights (need suid bit or
 331           to be run by root) and will refuse to execute otherwise:
 332           crontab, login, passwd, su, vlock, wall.
 333
 334           The applets which will use root rights if they have them
 335           (via suid bit, or because run by root), but would try to work
 336           without root right nevertheless:
 337           findfs, ping[6], traceroute[6], mount.
 338
 339           Note that if you DONT select this option, but DO make busybox
 340           suid root, ALL applets will run under root, which is a huge
 341           security hole (think "cp /some/file /etc/passwd").
 342
 343 config BUSYBOX_CONFIG_FEATURE_SUID_CONFIG
 344         bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
 345         default n
 346         depends on BUSYBOX_CONFIG_FEATURE_SUID
 347         help
 348           Allow the SUID / SGID state of an applet to be determined at runtime
 349           by checking /etc/busybox.conf. (This is sort of a poor man's sudo.)
 350           The format of this file is as follows:
 351
 352           APPLET = [Ssx-][Ssx-][x-] [USER.GROUP]
 353
 354           s: USER or GROUP is allowed to execute APPLET.
 355              APPLET will run under USER or GROUP
 356              (reagardless of who's running it).
 357           S: USER or GROUP is NOT allowed to execute APPLET.
 358              APPLET will run under USER or GROUP.
 359              This option is not very sensical.
 360           x: USER/GROUP/others are allowed to execute APPLET.
 361              No UID/GID change will be done when it is run.
 362           -: USER/GROUP/others are not allowed to execute APPLET.
 363
 364           An example might help:
 365
 366           [SUID]
 367           su = ssx root.0 # applet su can be run by anyone and runs with
 368                           # euid=0/egid=0
 369           su = ssx        # exactly the same
 370
 371           mount = sx- root.disk # applet mount can be run by root and members
 372                                 # of group disk (but not anyone else)
 373                                 # and runs with euid=0 (egid is not changed)
 374
 375           cp = --- # disable applet cp for everyone
 376
 377           The file has to be owned by user root, group root and has to be
 378           writeable only by root:
 379                 (chown 0.0 /etc/busybox.conf; chmod 600 /etc/busybox.conf)
 380           The busybox executable has to be owned by user root, group
 381           root and has to be setuid root for this to work:
 382                 (chown 0.0 /bin/busybox; chmod 4755 /bin/busybox)
 383
 384           Robert 'sandman' Griebl has more information here:
 385           <url: http://www.softforge.de/bb/suid.html >.
 386
 387 config BUSYBOX_CONFIG_FEATURE_SUID_CONFIG_QUIET
 388         bool "Suppress warning message if /etc/busybox.conf is not readable"
 389         default n
 390         depends on BUSYBOX_CONFIG_FEATURE_SUID_CONFIG
 391         help
 392           /etc/busybox.conf should be readable by the user needing the SUID,
 393           check this option to avoid users to be notified about missing
 394           permissions.
 395
 396 config BUSYBOX_CONFIG_SELINUX
 397         bool "Support NSA Security Enhanced Linux"
 398         default n
 399         select BUSYBOX_CONFIG_PLATFORM_LINUX
 400         help
 401           Enable support for SELinux in applets ls, ps, and id. Also provide
 402           the option of compiling in SELinux applets.
 403
 404           If you do not have a complete SELinux userland installed, this stuff
 405           will not compile. Go visit
 406                 http://www.nsa.gov/selinux/index.html
 407           to download the necessary stuff to allow busybox to compile with
 408           this option enabled. Specifially, libselinux 1.28 or better is
 409           directly required by busybox. If the installation is located in a
 410           non-standard directory, provide it by invoking make as follows:
 411                 CFLAGS=-I<libselinux-include-path> \
 412                 LDFLAGS=-L<libselinux-lib-path> \
 413                 make
 414
 415           Most people will leave this set to 'N'.
 416
 417 config BUSYBOX_CONFIG_FEATURE_PREFER_APPLETS
 418         bool "exec prefers applets"
 419         default y
 420         help
 421           This is an experimental option which directs applets about to
 422           call 'exec' to try and find an applicable busybox applet before
 423           searching the PATH. This is typically done by exec'ing
 424           /proc/self/exe.
 425           This may affect shell, find -exec, xargs and similar applets.
 426           They will use applets even if /bin/<applet> -> busybox link
 427           is missing (or is not a link to busybox). However, this causes
 428           problems in chroot jails without mounted /proc and with ps/top
 429           (command name can be shown as 'exe' for applets started this way).
 430
 431 config BUSYBOX_CONFIG_BUSYBOX_EXEC_PATH
 432         string "Path to BusyBox executable"
 433         default "/proc/self/exe"
 434         help
 435           When Busybox applets need to run other busybox applets, BusyBox
 436           sometimes needs to exec() itself. When the /proc filesystem is
 437           mounted, /proc/self/exe always points to the currently running
 438           executable. If you haven't got /proc, set this to wherever you
 439           want to run BusyBox from.
 440
 441 # These are auto-selected by other options
 442
 443 config BUSYBOX_CONFIG_FEATURE_SYSLOG
 444         bool #No description makes it a hidden option
 445         default y
 446         #help
 447         #  This option is auto-selected when you select any applet which may
 448         #  send its output to syslog. You do not need to select it manually.
 449
 450 config BUSYBOX_CONFIG_FEATURE_HAVE_RPC
 451         bool #No description makes it a hidden option
 452         default n
 453         #help
 454         #  This is automatically selected if any of enabled applets need it.
 455         #  You do not need to select it manually.
 456
 457 endmenu
 458
 459 menu 'Build Options'
 460
 461 config BUSYBOX_CONFIG_STATIC
 462         bool "Build BusyBox as a static binary (no shared libs)"
 463         default n
 464         help
 465           If you want to build a static BusyBox binary, which does not
 466           use or require any shared libraries, then enable this option.
 467           This can cause BusyBox to be considerably larger, so you should
 468           leave this option false unless you have a good reason (i.e.
 469           your target platform does not support shared libraries, or
 470           you are building an initrd which doesn't need anything but
 471           BusyBox, etc).
 472
 473           Most people will leave this set to 'N'.
 474
 475 config BUSYBOX_CONFIG_PIE
 476         bool "Build BusyBox as a position independent executable"
 477         default n
 478         depends on !BUSYBOX_CONFIG_STATIC
 479         help
 480           Hardened code option. PIE binaries are loaded at a different
 481           address at each invocation. This has some overhead,
 482           particularly on x86-32 which is short on registers.
 483
 484           Most people will leave this set to 'N'.
 485
 486 config BUSYBOX_CONFIG_NOMMU
 487         bool "Force NOMMU build"
 488         default n
 489         help
 490           Busybox tries to detect whether architecture it is being
 491           built against supports MMU or not. If this detection fails,
 492           or if you want to build NOMMU version of busybox for testing,
 493           you may force NOMMU build here.
 494
 495           Most people will leave this set to 'N'.
 496
 497 # PIE can be made to work with BUILD_LIBBUSYBOX, but currently
 498 # build system does not support that
 499 config BUSYBOX_CONFIG_BUILD_LIBBUSYBOX
 500         bool "Build shared libbusybox"
 501         default n
 502         depends on !BUSYBOX_CONFIG_FEATURE_PREFER_APPLETS && !BUSYBOX_CONFIG_PIE && !BUSYBOX_CONFIG_STATIC
 503         help
 504           Build a shared library libbusybox.so.N.N.N which contains all
 505           busybox code.
 506
 507           This feature allows every applet to be built as a tiny
 508           separate executable. Enabling it for "one big busybox binary"
 509           approach serves no purpose and increases code size.
 510           You should almost certainly say "no" to this.
 511
 512 ### config FEATURE_FULL_LIBBUSYBOX
 513 ###     bool "Feature-complete libbusybox"
 514 ###     default n if !FEATURE_SHARED_BUSYBOX
 515 ###     depends on BUILD_LIBBUSYBOX
 516 ###     help
 517 ###       Build a libbusybox with the complete feature-set, disregarding
 518 ###       the actually selected config.
 519 ###
 520 ###       Normally, libbusybox will only contain the features which are
 521 ###       used by busybox itself. If you plan to write a separate
 522 ###       standalone application which uses libbusybox say 'Y'.
 523 ###
 524 ###       Note: libbusybox is GPL, not LGPL, and exports no stable API that
 525 ###       might act as a copyright barrier. We can and will modify the
 526 ###       exported function set between releases (even minor version number
 527 ###       changes), and happily break out-of-tree features.
 528 ###
 529 ###       Say 'N' if in doubt.
 530
 531 config BUSYBOX_CONFIG_FEATURE_INDIVIDUAL
 532         bool "Produce a binary for each applet, linked against libbusybox"
 533         default n
 534         depends on BUSYBOX_CONFIG_BUILD_LIBBUSYBOX
 535         help
 536           If your CPU architecture doesn't allow for sharing text/rodata
 537           sections of running binaries, but allows for runtime dynamic
 538           libraries, this option will allow you to reduce memory footprint
 539           when you have many different applets running at once.
 540
 541           If your CPU architecture allows for sharing text/rodata,
 542           having single binary is more optimal.
 543
 544           Each applet will be a tiny program, dynamically linked
 545           against libbusybox.so.N.N.N.
 546
 547           You need to have a working dynamic linker.
 548
 549 config BUSYBOX_CONFIG_FEATURE_SHARED_BUSYBOX
 550         bool "Produce additional busybox binary linked against libbusybox"
 551         default n
 552         depends on BUSYBOX_CONFIG_BUILD_LIBBUSYBOX
 553         help
 554           Build busybox, dynamically linked against libbusybox.so.N.N.N.
 555
 556           You need to have a working dynamic linker.
 557
 558 ### config BUILD_AT_ONCE
 559 ###     bool "Compile all sources at once"
 560 ###     default n
 561 ###     help
 562 ###       Normally each source-file is compiled with one invocation of
 563 ###       the compiler.
 564 ###       If you set this option, all sources are compiled at once.
 565 ###       This gives the compiler more opportunities to optimize which can
 566 ###       result in smaller and/or faster binaries.
 567 ###
 568 ###       Setting this option will consume alot of memory, e.g. if you
 569 ###       enable all applets with all features, gcc uses more than 300MB
 570 ###       RAM during compilation of busybox.
 571 ###
 572 ###       This option is most likely only beneficial for newer compilers
 573 ###       such as gcc-4.1 and above.
 574 ###
 575 ###       Say 'N' unless you know what you are doing.
 576
 577 config BUSYBOX_CONFIG_LFS
 578         bool
 579         default y
 580         help
 581           If you want to build BusyBox with large file support, then enable
 582           this option. This will have no effect if your kernel or your C
 583           library lacks large file support for large files. Some of the
 584           programs that can benefit from large file support include dd, gzip,
 585           cp, mount, tar, and many others. If you want to access files larger
 586           than 2 Gigabytes, enable this option. Otherwise, leave it set to 'N'.
 587
 588 config BUSYBOX_CONFIG_CROSS_COMPILER_PREFIX
 589         string "Cross Compiler prefix"
 590         default ""
 591         help
 592           If you want to build BusyBox with a cross compiler, then you
 593           will need to set this to the cross-compiler prefix, for example,
 594           "i386-uclibc-".
 595
 596           Note that CROSS_COMPILE environment variable or
 597           "make CROSS_COMPILE=xxx ..." will override this selection.
 598
 599           Native builds leave this empty.
 600
 601 config BUSYBOX_CONFIG_EXTRA_CFLAGS
 602         string "Additional CFLAGS"
 603         default ""
 604         help
 605           Additional CFLAGS to pass to the compiler verbatim.
 606
 607 endmenu
 608
 609 menu 'Debugging Options'
 610
 611 config BUSYBOX_CONFIG_DEBUG
 612         bool "Build BusyBox with extra Debugging symbols"
 613         default n
 614         help
 615           Say Y here if you wish to examine BusyBox internals while applets are
 616           running. This increases the size of the binary considerably, and
 617           should only be used when doing development. If you are doing
 618           development and want to debug BusyBox, answer Y.
 619
 620           Most people should answer N.
 621
 622 config BUSYBOX_CONFIG_DEBUG_PESSIMIZE
 623         bool "Disable compiler optimizations"
 624         default n
 625         depends on BUSYBOX_CONFIG_DEBUG
 626         help
 627           The compiler's optimization of source code can eliminate and reorder
 628           code, resulting in an executable that's hard to understand when
 629           stepping through it with a debugger. This switches it off, resulting
 630           in a much bigger executable that more closely matches the source
 631           code.
 632
 633 config BUSYBOX_CONFIG_WERROR
 634         bool "Abort compilation on any warning"
 635         default n
 636         help
 637           Selecting this will add -Werror to gcc command line.
 638
 639           Most people should answer N.
 640
 641 choice
 642         prompt "Additional debugging library"
 643         default BUSYBOX_CONFIG_NO_DEBUG_LIB
 644         help
 645           Using an additional debugging library will make BusyBox become
 646           considerable larger and will cause it to run more slowly. You
 647           should always leave this option disabled for production use.
 648
 649           dmalloc support:
 650           ----------------
 651           This enables compiling with dmalloc ( http://dmalloc.com/ )
 652           which is an excellent public domain mem leak and malloc problem
 653           detector. To enable dmalloc, before running busybox you will
 654           want to properly set your environment, for example:
 655             export DMALLOC_OPTIONS=debug=0x34f47d83,inter=100,log=logfile
 656           The 'debug=' value is generated using the following command
 657             dmalloc -p log-stats -p log-non-free -p log-bad-space \
 658                -p log-elapsed-time -p check-fence -p check-heap \
 659                -p check-lists -p check-blank -p check-funcs -p realloc-copy \
 660                -p allow-free-null
 661
 662           Electric-fence support:
 663           -----------------------
 664           This enables compiling with Electric-fence support. Electric
 665           fence is another very useful malloc debugging library which uses
 666           your computer's virtual memory hardware to detect illegal memory
 667           accesses. This support will make BusyBox be considerable larger
 668           and run slower, so you should leave this option disabled unless
 669           you are hunting a hard to find memory problem.
 670
 671
 672 config BUSYBOX_CONFIG_NO_DEBUG_LIB
 673         bool "None"
 674
 675 config BUSYBOX_CONFIG_DMALLOC
 676         bool "Dmalloc"
 677
 678 config BUSYBOX_CONFIG_EFENCE
 679         bool "Electric-fence"
 680
 681 endchoice
 682
 683 endmenu
 684
 685 menu 'Installation Options ("make install" behavior)'
 686
 687 choice
 688         prompt "What kind of applet links to install"
 689         default BUSYBOX_CONFIG_INSTALL_APPLET_SYMLINKS
 690         help
 691           Choose what kind of links to applets are created by "make install".
 692
 693 config BUSYBOX_CONFIG_INSTALL_APPLET_SYMLINKS
 694         bool "as soft-links"
 695         help
 696           Install applets as soft-links to the busybox binary. This needs some
 697           free inodes on the filesystem, but might help with filesystem
 698           generators that can't cope with hard-links.
 699
 700 config BUSYBOX_CONFIG_INSTALL_APPLET_HARDLINKS
 701         bool "as hard-links"
 702         help
 703           Install applets as hard-links to the busybox binary. This might
 704           count on a filesystem with few inodes.
 705
 706 config BUSYBOX_CONFIG_INSTALL_APPLET_SCRIPT_WRAPPERS
 707         bool "as script wrappers"
 708         help
 709           Install applets as script wrappers that call the busybox binary.
 710
 711 config BUSYBOX_CONFIG_INSTALL_APPLET_DONT
 712         bool "not installed"
 713         help
 714           Do not install applet links. Useful when you plan to use
 715           busybox --install for installing links, or plan to use
 716           a standalone shell and thus don't need applet links.
 717
 718 endchoice
 719
 720 choice
 721         prompt "/bin/sh applet link"
 722         default BUSYBOX_CONFIG_INSTALL_SH_APPLET_SYMLINK
 723         depends on BUSYBOX_CONFIG_INSTALL_APPLET_SCRIPT_WRAPPERS
 724         help
 725           Choose how you install /bin/sh applet link.
 726
 727 config BUSYBOX_CONFIG_INSTALL_SH_APPLET_SYMLINK
 728         bool "as soft-link"
 729         help
 730           Install /bin/sh applet as soft-link to the busybox binary.
 731
 732 config BUSYBOX_CONFIG_INSTALL_SH_APPLET_HARDLINK
 733         bool "as hard-link"
 734         help
 735           Install /bin/sh applet as hard-link to the busybox binary.
 736
 737 config BUSYBOX_CONFIG_INSTALL_SH_APPLET_SCRIPT_WRAPPER
 738         bool "as script wrapper"
 739         help
 740           Install /bin/sh applet as script wrapper that calls
 741           the busybox binary.
 742
 743 endchoice
 744
 745 config BUSYBOX_CONFIG_PREFIX
 746         string "BusyBox installation prefix"
 747         default "./_install"
 748         help
 749           Define your directory to install BusyBox files/subdirs in.
 750
 751 endmenu
 752
 753 source package/busybox/config/libbb/Config.in
 754
 755 endmenu
 756
 757 comment "Applets"
 758
 759 source package/busybox/config/archival/Config.in
 760 source package/busybox/config/coreutils/Config.in
 761 source package/busybox/config/console-tools/Config.in
 762 source package/busybox/config/debianutils/Config.in
 763 source package/busybox/config/editors/Config.in
 764 source package/busybox/config/findutils/Config.in
 765 source package/busybox/config/init/Config.in
 766 source package/busybox/config/loginutils/Config.in
 767 source package/busybox/config/e2fsprogs/Config.in
 768 source package/busybox/config/modutils/Config.in
 769 source package/busybox/config/util-linux/Config.in
 770 source package/busybox/config/miscutils/Config.in
 771 source package/busybox/config/networking/Config.in
 772 source package/busybox/config/printutils/Config.in
 773 source package/busybox/config/mailutils/Config.in
 774 source package/busybox/config/procps/Config.in
 775 source package/busybox/config/runit/Config.in
 776 source package/busybox/config/selinux/Config.in
 777 source package/busybox/config/shell/Config.in
 778 source package/busybox/config/sysklogd/Config.in