X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=shell%2FConfig.in;h=57969f02cdf00f054573a2508ac64becdcb78264;hb=e18255d1dadc9686daa328fa121423b47d2f6af4;hp=a6701622c8004967fadceca067654045c8f2e168;hpb=cd2663f15e74274619dd97dc382bb858ac255872;p=oweals%2Fbusybox.git diff --git a/shell/Config.in b/shell/Config.in index a6701622c..57969f02c 100644 --- a/shell/Config.in +++ b/shell/Config.in @@ -39,7 +39,7 @@ config ASH help Tha 'ash' shell adds about 60k in the default configuration and is the most complete and most pedantically correct shell included with - busybox. This shell is actually a derivative of the Debian 'dash' + busybox. This shell is actually a derivative of the Debian 'dash' shell (by Herbert Xu), which was created by porting the 'ash' shell (written by Kenneth Almquist) from NetBSD. @@ -51,7 +51,7 @@ config ASH_BASH_COMPAT default y depends on ASH help - Enable bash-conpatible extensions. + Enable bash-compatible extensions. config ASH_JOB_CONTROL bool "Job control" @@ -69,7 +69,7 @@ config ASH_READ_NCHARS 'read -s' will read without echoing the user's input. config ASH_READ_TIMEOUT - bool "'read -t S' support." + bool "'read -t S' support" default n depends on ASH help @@ -84,22 +84,6 @@ config ASH_ALIAS help Enable alias support in the ash shell. -config ASH_MATH_SUPPORT - bool "Posix math support" - default y - depends on ASH - help - Enable math support in the ash shell. - -config ASH_MATH_SUPPORT_64 - bool "Extend Posix math support to 64 bit" - default n - depends on ASH_MATH_SUPPORT - help - Enable 64-bit math support in the ash shell. This will make - the shell slightly larger, but will allow computation with very - large numbers. - config ASH_GETOPTS bool "Builtin getopt to parse positional parameters" default n @@ -152,14 +136,14 @@ config ASH_OPTIMIZE_FOR_SIZE Compile ash for reduced size at the price of speed. config ASH_RANDOM_SUPPORT - bool "Pseudorandom generator and variable $RANDOM" + bool "Pseudorandom generator and $RANDOM variable" default n depends on ASH help Enable pseudorandom generator and dynamic variable "$RANDOM". Each read of "$RANDOM" will generate a new pseudorandom value. You can reset the generator by using a specified start value. - After "unset RANDOM" then generator will switch off and this + After "unset RANDOM" the generator will switch off and this variable will no longer have special treatment. config ASH_EXPAND_PRMT @@ -167,7 +151,7 @@ config ASH_EXPAND_PRMT default n depends on ASH help - "PS#" may be contain volatile content, such as backquote commands. + "PS#" may contain volatile content, such as backquote commands. This option recreates the prompt string from the environment variable each time it is displayed. @@ -175,14 +159,15 @@ config HUSH bool "hush" default n help - hush is a very small shell (just 18k) and it has fairly complete - Bourne shell grammar. It even handles all the normal flow control - options such as if/then/elif/else/fi, for/in/do/done, while loops, - etc. + hush is a small shell (22k). It handles the normal flow control + constructs such as if/then/elif/else/fi, for/in/do/done, while loops, + case/esac. Redirections, here documents, $((arithmetic)) + and functions are supported. + + It will compile and work on no-mmu systems. - It does not handle case/esac, select, function, here documents ( << - word ), arithmetic expansion, aliases, brace expansion, tilde - expansion, &> and >& redirection of stdout+stderr, etc. + It does not handle select, aliases, brace expansion, + tilde expansion, &>file and >&file redirection of stdout+stderr. config HUSH_HELP bool "help builtin" @@ -233,27 +218,68 @@ config HUSH_LOOPS help Enable for, while and until loops in hush. +config HUSH_CASE + bool "Support case ... esac statement" + default n + depends on HUSH + help + Enable case ... esac statement in hush. +400 bytes. + +config HUSH_FUNCTIONS + bool "Support funcname() { commands; } syntax" + default n + depends on HUSH + help + Enable support for shell functions in hush. +800 bytes. + +config HUSH_EXPORT_N + bool "Support export '-n' option" + default n + depends on HUSH + help + Enable support for export '-n' option in hush. It is a bash extension. + config LASH - bool "lash" + bool "lash (deprecated: aliased to hush)" default n select HUSH help lash is deprecated and will be removed, please migrate to hush. config MSH - bool "msh" + bool "msh (deprecated: please use hush)" default n help - The minix shell (adds just 30k) is quite complete and handles things - like for/do/done, case/esac and all the things you expect a Bourne - shell to do. It is not always pedantically correct about Bourne - shell grammar (try running the shell testscript "tests/sh.testcases" - on it and compare vs bash) but for most things it works quite well. - It also uses only vfork, so it can be used on uClinux systems. + msh is deprecated and will be removed, please migrate to hush. + If there is a feature msh has but hush does not, please let us know. + +# The minix shell (adds just 30k) is quite complete and handles things +# like for/do/done, case/esac and all the things you expect a Bourne +# shell to do. It is not always pedantically correct about Bourne +# shell grammar (try running the shell testscript "tests/sh.testcases" +# on it and compare vs bash) but for most things it works quite well. +# It uses only vfork, so it can be used on uClinux systems. + comment "Bourne Shell Options" depends on MSH || LASH || HUSH || ASH +config SH_MATH_SUPPORT + bool "POSIX math support" + default y + depends on ASH || HUSH + help + Enable math support in the shell via $((...)) syntax. + +config SH_MATH_SUPPORT_64 + bool "Extend POSIX math support to 64 bit" + default n + depends on SH_MATH_SUPPORT + help + Enable 64-bit math support in the shell. This will make the shell + slightly larger, but will allow computation with very large numbers. + This is not in POSIX, so do not rely on this in portable code. + config FEATURE_SH_EXTRA_QUIET bool "Hide message on interactive shell startup" default n @@ -267,11 +293,11 @@ config FEATURE_SH_STANDALONE depends on (MSH || LASH || HUSH || ASH) && FEATURE_PREFER_APPLETS help This option causes busybox shells to use busybox applets - in preference to executables in the PATH whenever possible. For + in preference to executables in the PATH whenever possible. For example, entering the command 'ifconfig' into the shell would cause - busybox to use the ifconfig busybox applet. Specifying the fully + busybox to use the ifconfig busybox applet. Specifying the fully qualified executable name, such as '/sbin/ifconfig' will still - execute the /sbin/ifconfig executable on the filesystem. This option + execute the /sbin/ifconfig executable on the filesystem. This option is generally used when creating a statically linked version of busybox for use as a rescue shell, in the event that you screw up your system. @@ -285,12 +311,12 @@ config FEATURE_SH_STANDALONE started this way). # untrue? # Note that this will *also* cause applets to take precedence -# over shell builtins of the same name. So turning this on will +# over shell builtins of the same name. So turning this on will # eliminate any performance gained by turning on the builtin "echo" # and "test" commands in ash. # untrue? # Note that when using this option, the shell will attempt to directly -# run '/bin/busybox'. If you do not have the busybox binary sitting in +# run '/bin/busybox'. If you do not have the busybox binary sitting in # that exact location with that exact name, this option will not work at # all.