diff options
Diffstat (limited to 'busybox-shell.kconfig')
| -rw-r--r-- | busybox-shell.kconfig | 85 |
1 files changed, 60 insertions, 25 deletions
diff --git a/busybox-shell.kconfig b/busybox-shell.kconfig index 73d355d..7a6bbae 100644 --- a/busybox-shell.kconfig +++ b/busybox-shell.kconfig @@ -4,7 +4,7 @@ # comment "-------------------------------------------------" -comment "----- Shells" +comment "Shells" comment "-------------------------------------------------" choice @@ -86,16 +86,18 @@ config KEMBTK_BUSYB_ASH_MATH_SUPPORT bool "Posix math support" default y depends on KEMBTK_BUSYB_ASH + depends on EMBTK_BB_VERSION_1_13_X help - Enable math support in the ash shell. + Enable math support in the ash shell. config KEMBTK_BUSYB_ASH_MATH_SUPPORT_64 bool "Extend Posix math support to 64 bit" depends on KEMBTK_BUSYB_ASH_MATH_SUPPORT + depends on EMBTK_BB_VERSION_1_13_X 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. + 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 KEMBTK_BUSYB_ASH_GETOPTS bool "Builtin getopt to parse positional parameters" @@ -147,36 +149,35 @@ config KEMBTK_BUSYB_ASH_OPTIMIZE_FOR_SIZE Compile ash for reduced size at the price of speed. config KEMBTK_BUSYB_ASH_RANDOM_SUPPORT - bool "Pseudorandom generator and variable $RANDOM" + bool "Pseudorandom generator and $RANDOM variable" depends on KEMBTK_BUSYB_ASH help Enable pseudorandom generator and dynamic variable "$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 KEMBTK_BUSYB_ASH_EXPAND_PRMT bool "Expand prompt string" depends on KEMBTK_BUSYB_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. config KEMBTK_BUSYB_HUSH bool "hush" 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, - case/esac. + 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 uses only vfork, so it can be used on uClinux systems. + It will compile and work on no-mmu systems. - It does not handle select, functions, 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 KEMBTK_BUSYB_HUSH_HELP bool "help builtin" @@ -221,7 +222,6 @@ config KEMBTK_BUSYB_HUSH_LOOPS depends on KEMBTK_BUSYB_HUSH help Enable for, while and until loops in hush. - As of 2008-07, break and continue statements are not supported. config KEMBTK_BUSYB_HUSH_CASE bool "Support case ... esac statement" @@ -229,25 +229,60 @@ config KEMBTK_BUSYB_HUSH_CASE help Enable case ... esac statement in hush. +400 bytes. +config KEMBTK_BUSYB_HUSH_FUNCTIONS + bool "Support funcname() { commands; } syntax" + depends on KEMBTK_BUSYB_HUSH + depends on EMBTK_BB_VERSION_1_14_X + help + Enable support for shell functions in hush. +800 bytes. + +config KEMBTK_BUSYB_HUSH_EXPORT_N + bool "Support export '-n' option" + depends on KEMBTK_BUSYB_HUSH + depends on EMBTK_BB_VERSION_1_14_X + help + Enable support for export '-n' option in hush. It is a bash extension. + config KEMBTK_BUSYB_LASH - bool "lash" + bool "lash (deprecated: aliased to hush)" select KEMBTK_BUSYB_HUSH help lash is deprecated and will be removed, please migrate to hush. config KEMBTK_BUSYB_MSH - bool "msh" + bool "msh (deprecated: please use hush)" 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 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 KEMBTK_BUSYB_MSH || KEMBTK_BUSYB_LASH || KEMBTK_BUSYB_HUSH || KEMBTK_BUSYB_ASH +config KEMBTK_BUSYB_SH_MATH_SUPPORT + bool "POSIX math support" + default y + depends on KEMBTK_BUSYB_ASH || KEMBTK_BUSYB_HUSH + depends on EMBTK_BB_VERSION_1_14_X + help + Enable math support in the shell via $((...)) syntax. + +config KEMBTK_BUSYB_SH_MATH_SUPPORT_64 + bool "Extend POSIX math support to 64 bit" + depends on KEMBTK_BUSYB_SH_MATH_SUPPORT + depends on EMBTK_BB_VERSION_1_14_X + 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 KEMBTK_BUSYB_FEATURE_SH_EXTRA_QUIET bool "Hide message on interactive shell startup" depends on KEMBTK_BUSYB_MSH || KEMBTK_BUSYB_LASH || KEMBTK_BUSYB_HUSH || KEMBTK_BUSYB_ASH |