X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Documentation%2Fkbuild%2Fkconfig-language.txt;h=616043a6da99a0afd945e3cb5acb93b26bbb3f17;hb=02bae2129710018883f9536969de7e6acf9304ca;hp=125093c3ef76229296c171167c726c32d8e82b1a;hpb=5a96c5d0c58ead9a0ece03ffe1c116dea6dafe9c;p=linux-2.6 diff --git a/Documentation/kbuild/kconfig-language.txt b/Documentation/kbuild/kconfig-language.txt index 125093c3ef..616043a6da 100644 --- a/Documentation/kbuild/kconfig-language.txt +++ b/Documentation/kbuild/kconfig-language.txt @@ -29,7 +29,7 @@ them. A single configuration option is defined like this: config MODVERSIONS bool "Set version information on all module symbols" - depends MODULES + depends on MODULES help Usually, modules have to be recompiled whenever you switch to a new kernel. ... @@ -77,7 +77,12 @@ applicable everywhere (see syntax). Optionally, dependencies only for this default value can be added with "if". -- dependencies: "depends on"/"requires" +- type definition + default value: + "def_bool"/"def_tristate" ["if" ] + This is a shorthand notation for a type definition plus a value. + Optionally dependencies for this default value can be added with "if". + +- dependencies: "depends on" This defines a dependency for this menu entry. If multiple dependencies are defined, they are connected with '&&'. Dependencies are applied to all other options within this menu entry (which also @@ -98,6 +103,15 @@ applicable everywhere (see syntax). times, the limit is set to the largest selection. Reverse dependencies can only be used with boolean or tristate symbols. + Note: + select is evil.... select will by brute force set a symbol + equal to 'y' without visiting the dependencies. So abusing + select you are able to select a symbol FOO even if FOO depends + on BAR that is not set. In general use select only for + non-visible symbols (no promts 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. - numerical ranges: "range" ["if" ] This allows to limit the range of possible input values for int @@ -163,7 +177,7 @@ The position of a menu entry in the tree is determined in two ways. First it can be specified explicitly: menu "Network device support" - depends NET + depends on NET config NETDEVICES ... @@ -188,10 +202,10 @@ config MODULES config MODVERSIONS bool "Set version information on all module symbols" - depends MODULES + depends on MODULES comment "module support disabled" - depends !MODULES + depends on !MODULES MODVERSIONS directly depends on MODULES, this means it's only visible if MODULES is different from 'n'. The comment on the other hand is always @@ -280,3 +294,10 @@ source: "source" This reads the specified configuration file. This file is always parsed. + +mainmenu: + + "mainmenu" + +This sets the config program's title bar if the config program chooses +to use it.