1 | #
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2 | # For a description of the syntax of this configuration file,
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3 | # see scripts/kbuild/config-language.txt.
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4 | #
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5 |
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6 | mainmenu "BusyBox Configuration"
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7 |
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8 | config HAVE_DOT_CONFIG
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9 | bool
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10 | default y
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11 |
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12 | menu "Busybox Settings"
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13 |
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14 | menu "General Configuration"
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15 |
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16 | config CONFIG_NITPICK
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17 | bool "See lots more (probably unnecessary) configuration options."
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18 | default n
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19 | help
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20 | Some BusyBox applets have more configuration options than anyone
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21 | will ever care about. To avoid drowining people in complexity, most
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22 | of the applet features that can be set to a sane default value are
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23 | hidden, unless you hit the above switch.
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24 |
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25 | This is better than to telling people to edit the busybox source
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26 | code, but not by much.
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27 |
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28 | See http://en.wikipedia.org/wiki/Fibber_McGee_and_Molly#The_Closet
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29 |
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30 | You have been warned.
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31 |
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32 | choice
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33 | prompt "Buffer allocation policy"
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34 | default CONFIG_FEATURE_BUFFERS_USE_MALLOC
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35 | depends on CONFIG_NITPICK
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36 | help
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37 | There are 3 ways BusyBox can handle buffer allocations:
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38 | - Use malloc. This costs code size for the call to xmalloc.
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39 | - Put them on stack. For some very small machines with limited stack
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40 | space, this can be deadly. For most folks, this works just fine.
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41 | - Put them in BSS. This works beautifully for computers with a real
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42 | MMU (and OS support), but wastes runtime RAM for uCLinux. This
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43 | behavior was the only one available for BusyBox versions 0.48 and
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44 | earlier.
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45 |
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46 | config CONFIG_FEATURE_BUFFERS_USE_MALLOC
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47 | bool "Allocate with Malloc"
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48 |
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49 | config CONFIG_FEATURE_BUFFERS_GO_ON_STACK
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50 | bool "Allocate on the Stack"
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51 |
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52 | config CONFIG_FEATURE_BUFFERS_GO_IN_BSS
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53 | bool "Allocate in the .bss section"
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54 |
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55 | endchoice
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56 |
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57 | config CONFIG_SHOW_USAGE
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58 | bool "Show terse applet usage messages"
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59 | default y
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60 | help
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61 | All BusyBox applets will show help messages when invoked with
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62 | wrong arguments. You can turn off printing these terse usage
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63 | messages if you say no here.
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64 | This will save you up to 7k.
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65 |
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66 | config CONFIG_FEATURE_VERBOSE_USAGE
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67 | bool "Show verbose applet usage messages"
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68 | default n
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69 | select CONFIG_SHOW_USAGE
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70 | help
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71 | All BusyBox applets will show more verbose help messages when
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72 | busybox is invoked with --help. This will add a lot of text to the
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73 | busybox binary. In the default configuration, this will add about
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74 | 13k, but it can add much more depending on your configuration.
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75 |
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76 | config CONFIG_FEATURE_COMPRESS_USAGE
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77 | bool "Store applet usage messages in compressed form"
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78 | default y
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79 | depends on CONFIG_SHOW_USAGE
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80 | help
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81 | Store usage messages in compressed form, uncompress them on-the-fly
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82 | when <applet> --help is called.
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83 |
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84 | If you have a really tiny busybox with few applets enabled (and
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85 | bunzip2 isn't one of them), the overhead of the decompressor might
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86 | be noticeable. Also, if you run executables directly from ROM
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87 | and have very little memory, this might not be a win. Otherwise,
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88 | you probably want this.
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89 |
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90 | config CONFIG_FEATURE_INSTALLER
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91 | bool "Support --install [-s] to install applet links at runtime"
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92 | default n
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93 | help
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94 | Enable 'busybox --install [-s]' support. This will allow you to use
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95 | busybox at runtime to create hard links or symlinks for all the
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96 | applets that are compiled into busybox. This feature requires the
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97 | /proc filesystem.
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98 |
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99 | config CONFIG_LOCALE_SUPPORT
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100 | bool "Enable locale support (system needs locale for this to work)"
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101 | default n
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102 | help
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103 | Enable this if your system has locale support and you would like
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104 | busybox to support locale settings.
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105 |
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106 | config CONFIG_GETOPT_LONG
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107 | bool
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108 | default y
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109 | # bool "Enable support for --long-options"
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110 | # default n
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111 | # help
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112 | # Enable this if you want busybox applets to use the gnu --long-option
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113 | # style, in addition to single character -a -b -c style options.
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114 |
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115 | config CONFIG_FEATURE_DEVPTS
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116 | bool "Use the devpts filesystem for Unix98 PTYs"
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117 | default y
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118 | help
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119 | Enable if you want BusyBox to use Unix98 PTY support. If enabled,
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120 | busybox will use /dev/ptmx for the master side of the pseudoterminal
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121 | and /dev/pts/<number> for the slave side. Otherwise, BSD style
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122 | /dev/ttyp<number> will be used. To use this option, you should have
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123 | devpts mounted.
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124 |
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125 | config CONFIG_FEATURE_CLEAN_UP
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126 | bool "Clean up all memory before exiting (usually not needed)"
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127 | default n
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128 | depends on CONFIG_NITPICK
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129 | help
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130 | As a size optimization, busybox normally exits without explicitly
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131 | freeing dynamically allocated memory or closing files. This saves
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132 | space since the OS will clean up for us, but it can confuse debuggers
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133 | like valgrind, which report tons of memory and resource leaks.
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134 |
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135 | Don't enable this unless you have a really good reason to clean
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136 | things up manually.
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137 |
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138 | config CONFIG_FEATURE_SUID
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139 | bool "Support for SUID/SGID handling"
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140 | default n
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141 | help
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142 | With this option you can install the busybox binary belonging
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143 | to root with the suid bit set, and it'll and it'll automatically drop
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144 | priviledges for applets that don't need root access.
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145 |
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146 | If you're really paranoid and don't want to do this, build two
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147 | busybox binaries with different applets in them (and the appropriate
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148 | symlinks pointing to each binary), and only set the suid bit on the
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149 | one that needs it. The applets currently marked to need the suid bit
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150 | are login, passwd, su, ping, traceroute, crontab, dnsd, ipcrm, ipcs,
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151 | and vlock.
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152 |
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153 | config CONFIG_FEATURE_SUID_CONFIG
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154 | bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
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155 | default n if CONFIG_FEATURE_SUID
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156 | depends on CONFIG_FEATURE_SUID
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157 | help
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158 | Allow the SUID / SGID state of an applet to be determined at runtime
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159 | by checking /etc/busybox.conf. (This is sort of a poor man's sudo.)
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160 | The format of this file is as follows:
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161 |
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162 | <applet> = [Ssx-][Ssx-][x-] (<username>|<uid>).(<groupname>|<gid>)
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163 |
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164 | An example might help:
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165 |
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166 | [SUID]
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167 | su = ssx root.0 # applet su can be run by anyone and runs with euid=0/egid=0
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168 | su = ssx # exactly the same
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169 |
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170 | mount = sx- root.disk # applet mount can be run by root and members of group disk
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171 | # and runs with euid=0
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172 |
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173 | cp = --- # disable applet cp for everyone
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174 |
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175 | The file has to be owned by user root, group root and has to be
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176 | writeable only by root:
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177 | (chown 0.0 /etc/busybox.conf; chmod 600 /etc/busybox.conf)
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178 | The busybox executable has to be owned by user root, group
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179 | root and has to be setuid root for this to work:
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180 | (chown 0.0 /bin/busybox; chmod 4755 /bin/busybox)
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181 |
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182 | Robert 'sandman' Griebl has more information here:
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183 | <url: http://www.softforge.de/bb/suid.html >.
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184 |
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185 | config CONFIG_FEATURE_SUID_CONFIG_QUIET
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186 | bool "Suppress warning message if /etc/busybox.conf is not readable"
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187 | default y
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188 | depends on CONFIG_FEATURE_SUID_CONFIG
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189 | help
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190 | /etc/busybox.conf should be readable by the user needing the SUID, check
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191 | this option to avoid users to be notified about missing permissions.
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192 |
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193 | config CONFIG_SELINUX
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194 | bool "Support NSA Security Enhanced Linux"
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195 | default n
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196 | help
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197 | Enable support for SELinux in applets ls, ps, and id. Also provide
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198 | the option of compiling in SELinux applets.
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199 |
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200 | If you do not have a complete SELinux userland installed, this stuff
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201 | will not compile. Go visit
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202 | http://www.nsa.gov/selinux/index.html
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203 | to download the necessary stuff to allow busybox to compile with
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204 | this option enabled. Specifially, libselinux 1.28 or better is
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205 | directly required by busybox. If the installation is located in a
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206 | non-standard directory, provide it by invoking make as follows:
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207 | CFLAGS=-I<libselinux-include-path> \
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208 | LDFLAGS=-L<libselinux-lib-path> \
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209 | make
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210 |
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211 | Most people will leave this set to 'N'.
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212 |
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213 | config CONFIG_BUSYBOX_EXEC_PATH
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214 | string "Path to BusyBox executable"
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215 | default "/proc/self/exe"
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216 | help
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217 | When Busybox applets need to run other busybox applets, BusyBox
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218 | sometimes needs to exec() itself. When the /proc filesystem is
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219 | mounted, /proc/self/exe always points to the currently running
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220 | executable. If you haven't got /proc, set this to wherever you
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221 | want to run BusyBox from.
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222 |
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223 | endmenu
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224 |
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225 | menu 'Build Options'
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226 |
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227 | config CONFIG_STATIC
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228 | bool "Build BusyBox as a static binary (no shared libs)"
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229 | default n
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230 | help
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231 | If you want to build a static BusyBox binary, which does not
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232 | use or require any shared libraries, then enable this option.
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233 | This can cause BusyBox to be considerably larger, so you should
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234 | leave this option false unless you have a good reason (i.e.
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235 | your target platform does not support shared libraries, or
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236 | you are building an initrd which doesn't need anything but
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237 | BusyBox, etc).
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238 |
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239 | Most people will leave this set to 'N'.
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240 |
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241 | config CONFIG_BUILD_LIBBUSYBOX
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242 | bool "Build shared libbusybox"
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243 | default n
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244 | help
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245 | Build a shared library libbusybox.so which contains all
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246 | libraries used inside busybox.
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247 |
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248 | This is an experimental feature intended to support the upcoming
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249 | "make standalone" mode. Enabling it against the one big busybox
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250 | binary serves no purpose (and increases the size). You should
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251 | almost certainly say "no" to this right now.
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252 |
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253 | config CONFIG_FEATURE_FULL_LIBBUSYBOX
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254 | bool "Feature-complete libbusybox"
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255 | default n if !CONFIG_FEATURE_SHARED_BUSYBOX
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256 | depends on CONFIG_BUILD_LIBBUSYBOX
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257 | help
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258 | Build a libbusybox with the complete feature-set, disregarding
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259 | the actually selected config.
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260 |
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261 | Normally, libbusybox will only contain the features which are
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262 | used by busybox itself. If you plan to write a separate
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263 | standalone application which uses libbusybox say 'Y'.
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264 |
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265 | Note: libbusybox is GPL, not LGPL, and exports no stable API that
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266 | might act as a copyright barrier. We can and will modify the
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267 | exported function set between releases (even minor version number
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268 | changes), and happily break out-of-tree features.
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269 |
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270 | Say 'N' if in doubt.
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271 |
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272 | config CONFIG_FEATURE_SHARED_BUSYBOX
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273 | bool "Use shared libbusybox for busybox"
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274 | default y if CONFIG_BUILD_LIBBUSYBOX
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275 | depends on !CONFIG_STATIC && CONFIG_BUILD_LIBBUSYBOX
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276 | help
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277 | Use libbusybox.so also for busybox itself.
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278 | You need to have a working dynamic linker to use this variant.
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279 |
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280 | config CONFIG_LFS
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281 | bool "Build with Large File Support (for accessing files > 2 GB)"
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282 | default n
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283 | select FDISK_SUPPORT_LARGE_DISKS
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284 | help
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285 | If you want to build BusyBox with large file support, then enable
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286 | this option. This will have no effect if your kernel or your C
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287 | library lacks large file support for large files. Some of the
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288 | programs that can benefit from large file support include dd, gzip,
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289 | cp, mount, tar, and many others. If you want to access files larger
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290 | than 2 Gigabytes, enable this option. Otherwise, leave it set to 'N'.
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291 |
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292 | config USING_CROSS_COMPILER
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293 | bool "Do you want to build BusyBox with a Cross Compiler?"
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294 | default n
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295 | help
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296 | Do you want to build BusyBox with a Cross Compiler? If so,
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297 | then enable this option. Otherwise leave it set to 'N'.
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298 |
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299 | config CROSS_COMPILER_PREFIX
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300 | string "Cross Compiler prefix"
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301 | default "/usr/i386-linux-uclibc/bin/i386-uclibc-"
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302 | depends on USING_CROSS_COMPILER
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303 | help
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304 | If you want to build BusyBox with a cross compiler, then you
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305 | will need to set this to the cross-compiler prefix. For example,
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306 | if my cross-compiler is /usr/i386-linux-uclibc/bin/i386-uclibc-gcc
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307 | then I would enter '/usr/i386-linux-uclibc/bin/i386-uclibc-' here,
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308 | which will ensure the correct compiler is used.
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309 |
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310 | config CONFIG_BUILD_AT_ONCE
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311 | bool "Compile all sources at once"
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312 | default n
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313 | help
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314 | Normally each source-file is compiled with one invocation of
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315 | the compiler.
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316 | If you set this option, all sources are compiled at once.
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317 | This gives the compiler more opportunities to optimize which can
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318 | result in smaller and/or faster binaries.
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319 |
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320 | Setting this option will consume alot of memory, e.g. if you
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321 | enable all applets with all features, gcc uses more than 300MB
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322 | RAM during compilation of busybox.
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323 |
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324 | This option is most likely only beneficial for newer compilers
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325 | such as gcc-4.1 and above.
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326 |
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327 | Say 'N' unless you know what you are doing.
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328 |
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329 | endmenu
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330 |
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331 | menu 'Debugging Options'
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332 |
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333 | config CONFIG_DEBUG
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334 | bool "Build BusyBox with extra Debugging symbols"
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335 | default n
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336 | help
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337 | Say Y here if you wish to examine BusyBox internals while applets are
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338 | running. This increases the size of the binary considerably, and
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339 | should only be used when doing development. If you are doing
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340 | development and want to debug BusyBox, answer Y.
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341 |
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342 | Most people should answer N.
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343 |
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344 | config CONFIG_DEBUG_PESSIMIZE
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345 | bool "Disable compiler optimizations."
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346 | default n
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347 | depends on CONFIG_DEBUG
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348 | help
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349 | The compiler's optimization of source code can eliminate and reorder
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350 | code, resulting in an executable that's hard to understand when
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351 | stepping through it with a debugger. This switches it off, resulting
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352 | in a much bigger executable that more closely matches the source
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353 | code.
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354 |
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355 | choice
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356 | prompt "Additional debugging library"
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357 | default CONFIG_NO_DEBUG_LIB
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358 | depends on CONFIG_DEBUG
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359 | help
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360 | Using an additional debugging library will make BusyBox become
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361 | considerable larger and will cause it to run more slowly. You
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362 | should always leave this option disabled for production use.
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363 |
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364 | dmalloc support:
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365 | ----------------
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366 | This enables compiling with dmalloc ( http://dmalloc.com/ )
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367 | which is an excellent public domain mem leak and malloc problem
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368 | detector. To enable dmalloc, before running busybox you will
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369 | want to properly set your environment, for example:
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370 | export DMALLOC_OPTIONS=debug=0x34f47d83,inter=100,log=logfile
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371 | The 'debug=' value is generated using the following command
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372 | dmalloc -p log-stats -p log-non-free -p log-bad-space -p log-elapsed-time \
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373 | -p check-fence -p check-heap -p check-lists -p check-blank \
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374 | -p check-funcs -p realloc-copy -p allow-free-null
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375 |
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376 | Electric-fence support:
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377 | -----------------------
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378 | This enables compiling with Electric-fence support. Electric
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379 | fence is another very useful malloc debugging library which uses
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380 | your computer's virtual memory hardware to detect illegal memory
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381 | accesses. This support will make BusyBox be considerable larger
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382 | and run slower, so you should leave this option disabled unless
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383 | you are hunting a hard to find memory problem.
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384 |
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385 |
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386 | config CONFIG_NO_DEBUG_LIB
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387 | bool "None"
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388 |
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389 | config CONFIG_DMALLOC
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390 | bool "Dmalloc"
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391 |
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392 | config CONFIG_EFENCE
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393 | bool "Electric-fence"
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394 |
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395 | endchoice
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396 |
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397 | config CONFIG_DEBUG_YANK_SUSv2
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398 | bool "Disable obsolete features removed before SUSv3?"
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399 | default y
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400 | help
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401 | This option will disable backwards compatibility with SuSv2,
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402 | specifically, old-style numeric options ('command -1 <file>')
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403 | will not be supported in head, tail, and fold. (Note: should
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404 | yank from renice too.)
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405 |
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406 | endmenu
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407 |
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408 | menu 'Installation Options'
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409 |
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410 | config CONFIG_INSTALL_NO_USR
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411 | bool "Don't use /usr"
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412 | default n
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413 | help
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414 | Disable use of /usr. Don't activate this option if you don't know
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415 | that you really want this behaviour.
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416 |
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417 | choice
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418 | prompt "Applets links"
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419 | default CONFIG_INSTALL_APPLET_SYMLINKS
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420 | help
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421 | Choose how you install applets links.
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422 |
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423 | config CONFIG_INSTALL_APPLET_SYMLINKS
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424 | bool "as soft-links"
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425 | help
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426 | Install applets as soft-links to the busybox binary. This needs some
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427 | free inodes on the filesystem, but might help with filesystem
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428 | generators that can't cope with hard-links.
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429 |
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430 | config CONFIG_INSTALL_APPLET_HARDLINKS
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431 | bool "as hard-links"
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432 | help
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433 | Install applets as hard-links to the busybox binary. This might count
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434 | on a filesystem with few inodes.
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435 |
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436 | config CONFIG_INSTALL_APPLET_DONT
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437 | bool
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438 | prompt "not installed"
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439 | depends on CONFIG_FEATURE_INSTALLER || CONFIG_FEATURE_SH_STANDALONE_SHELL
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440 | help
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441 | Do not install applets links. Usefull when using the -install feature
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442 | or a standalone shell for rescue pruposes.
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443 |
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444 | endchoice
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445 |
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446 | config PREFIX
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447 | string "BusyBox installation prefix"
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448 | default "./_install"
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449 | help
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450 | Define your directory to install BusyBox files/subdirs in.
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451 |
|
---|
452 | endmenu
|
---|
453 |
|
---|
454 | source libbb/Config.in
|
---|
455 |
|
---|
456 | endmenu
|
---|
457 |
|
---|
458 | comment "Applets"
|
---|
459 |
|
---|
460 | source archival/Config.in
|
---|
461 | source coreutils/Config.in
|
---|
462 | source console-tools/Config.in
|
---|
463 | source debianutils/Config.in
|
---|
464 | source editors/Config.in
|
---|
465 | source findutils/Config.in
|
---|
466 | source init/Config.in
|
---|
467 | source loginutils/Config.in
|
---|
468 | source e2fsprogs/Config.in
|
---|
469 | source modutils/Config.in
|
---|
470 | source util-linux/Config.in
|
---|
471 | source miscutils/Config.in
|
---|
472 | source networking/Config.in
|
---|
473 | source procps/Config.in
|
---|
474 | source shell/Config.in
|
---|
475 | source sysklogd/Config.in
|
---|