2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 menu "Busybox Library Tuning"
9 int "Minimum password length"
13 Minimum allowable password length.
15 config MD5_SIZE_VS_SPEED
16 int "MD5: Trade Bytes for Speed"
20 Trade binary size versus speed for the md5sum algorithm.
21 Approximate values running uClibc and hashing
22 linux-2.4.4.tar.bz2 were:
23 user times (sec) text size (386)
29 config FEATURE_FAST_TOP
30 bool "Faster /proc scanning code (+100 bytes)"
33 This option makes top (and ps) ~20% faster (or 20% less CPU hungry),
34 but code size is slightly bigger.
36 config FEATURE_ETC_NETWORKS
37 bool "Support for /etc/networks"
40 Enable support for network names in /etc/networks. This is
41 a rarely used feature which allows you to use names
42 instead of IP/mask pairs in route command.
44 config FEATURE_EDITING
45 bool "Command line editing"
48 Enable line editing (mainly for shell command line).
50 config FEATURE_EDITING_MAX_LEN
51 int "Maximum length of input"
54 depends on FEATURE_EDITING
56 Line editing code uses on-stack buffers for storage.
57 You may want to decrease this parameter if your target machine
58 benefits from smaller stack usage.
60 config FEATURE_EDITING_VI
61 bool "vi-style line editing commands"
63 depends on FEATURE_EDITING
65 Enable vi-style line editing. In shells, this mode can be
66 turned on and off with "set -o vi" and "set +o vi".
68 config FEATURE_EDITING_HISTORY
72 depends on FEATURE_EDITING
74 Specify command history size.
76 config FEATURE_EDITING_SAVEHISTORY
79 depends on ASH && FEATURE_EDITING
81 Enable history saving in ash shell.
83 config FEATURE_TAB_COMPLETION
86 depends on FEATURE_EDITING
88 Enable tab completion.
90 config FEATURE_USERNAME_COMPLETION
91 bool "Username completion"
93 depends on FEATURE_TAB_COMPLETION
95 Enable username completion.
97 config FEATURE_EDITING_FANCY_PROMPT
98 bool "Fancy shell prompts"
100 depends on FEATURE_EDITING
102 Setting this option allows for prompts to use things like \w and
105 config FEATURE_EDITING_ASK_TERMINAL
106 bool "Query cursor position from terminal"
108 depends on FEATURE_EDITING
110 Allow usage of "ESC [ 6 n" sequence. Terminal answers back with
111 current cursor position. This information is used to make line
112 editing more robust in some cases.
113 If you are not sure whether your terminals respond to this code
114 correctly, or want to save on code size (about 300 bytes),
115 then do not turn this option on.
117 config FEATURE_VERBOSE_CP_MESSAGE
118 bool "Give more precise messages when copy fails (cp, mv etc)"
121 Error messages with this feature enabled:
122 $ cp file /does_not_exist/file
123 cp: cannot create '/does_not_exist/file': Path does not exist
124 $ cp file /vmlinuz/file
125 cp: cannot stat '/vmlinuz/file': Path has non-directory component
126 If this feature is not enabled, they will be, respectively:
127 cp: cannot remove '/does_not_exist/file': No such file or directory
128 cp: cannot stat '/vmlinuz/file': Not a directory
130 This will cost you ~60 bytes.
132 config FEATURE_COPYBUF_KB
133 int "Copy buffer size, in kilobytes"
137 Size of buffer used by cp, mv, install etc.
138 Buffers which are 4 kb or less will be allocated on stack.
139 Bigger buffers will be allocated with mmap, with fallback to 4 kb
140 stack buffer if mmap fails.
142 config MONOTONIC_SYSCALL
143 bool "Use clock_gettime(CLOCK_MONOTONIC) syscall"
146 Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring
147 time intervals (time, ping, traceroute etc need this).
148 Probably requires Linux 2.6+. If not selected, gettimeofday
149 will be used instead (which gives wrong results if date/time
152 config IOCTL_HEX2STR_ERROR
153 bool "Use ioctl names rather than hex values in error messages"
156 Use ioctl names rather than hex values in error messages
157 (e.g. VT_DISALLOCATE rather than 0x5608). If disabled this
158 saves about 1400 bytes.
161 bool "Support infiniband HW"
164 Support for printing infiniband addresses in