diff options
Diffstat (limited to 'extra/config/kconfig-language.txt')
| -rw-r--r-- | extra/config/kconfig-language.txt | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/extra/config/kconfig-language.txt b/extra/config/kconfig-language.txt index c412c2458..c858f8419 100644 --- a/extra/config/kconfig-language.txt +++ b/extra/config/kconfig-language.txt @@ -112,7 +112,13 @@ applicable everywhere (see syntax). (no prompts anywhere) and for symbols with no dependencies. That will limit the usefulness but on the other hand avoid the illegal configurations all over. - kconfig should one day warn about such things. + +- limiting menu display: "visible if" <expr> + This attribute is only applicable to menu blocks, if the condition is + false, the menu block is not displayed to the user (the symbols + contained there can still be selected by other symbols, though). It is + similar to a conditional "prompt" attribute for individual menu + entries. Default value of "visible" is true. - numerical ranges: "range" <symbol> <symbol> ["if" <expr>] This allows to limit the range of possible input values for int @@ -181,7 +187,7 @@ Expressions are listed in decreasing order of precedence. (7) Returns the result of max(/expr/, /expr/). An expression can have a value of 'n', 'm' or 'y' (or 0, 1, 2 -respectively for calculations). A menu entry becomes visible when it's +respectively for calculations). A menu entry becomes visible when its expression evaluates to 'm' or 'y'. There are two types of symbols: constant and non-constant symbols. @@ -268,7 +274,7 @@ separate list of options. choices: - "choice" + "choice" [symbol] <choice options> <choice block> "endchoice" @@ -282,6 +288,10 @@ single driver can be compiled/loaded into the kernel, but all drivers can be compiled as modules. A choice accepts another option "optional", which allows to set the choice to 'n' and no entry needs to be selected. +If no [symbol] is associated with a choice, then you can not have multiple +definitions of that choice. If a [symbol] is associated to the choice, +then you may define the same choice (ie. with the same entries) in another +place. comment: @@ -300,7 +310,8 @@ menu: "endmenu" This defines a menu block, see "Menu structure" above for more -information. The only possible options are dependencies. +information. The only possible options are dependencies and "visible" +attributes. if: @@ -322,7 +333,8 @@ mainmenu: "mainmenu" <prompt> This sets the config program's title bar if the config program chooses -to use it. +to use it. It should be placed at the top of the configuration, before any +other statement. Kconfig hints @@ -376,4 +388,3 @@ config FOO depends on BAR && m limits FOO to module (=m) or disabled (=n). - |