diff options
Diffstat (limited to 'Documentation/kbuild/kconfig-language.txt')
| -rw-r--r-- | Documentation/kbuild/kconfig-language.txt | 30 |
1 files changed, 6 insertions, 24 deletions
diff --git a/Documentation/kbuild/kconfig-language.txt b/Documentation/kbuild/kconfig-language.txt index 44e2649fbb2..350f733bf2c 100644 --- a/Documentation/kbuild/kconfig-language.txt +++ b/Documentation/kbuild/kconfig-language.txt @@ -117,7 +117,7 @@ applicable everywhere (see syntax). 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" attribude for individual menu + similar to a conditional "prompt" attribute for individual menu entries. Default value of "visible" is true. - numerical ranges: "range" <symbol> <symbol> ["if" <expr>] @@ -147,6 +147,7 @@ applicable everywhere (see syntax). - "modules" This declares the symbol to be used as the MODULES symbol, which enables the third modular state for all config symbols. + At most one symbol may have the "modules" option set. - "env"=<value> This imports the environment variable into Kconfig. It behaves like @@ -156,6 +157,10 @@ applicable everywhere (see syntax). to the build environment (if this is desired, it can be done via another symbol). + - "allnoconfig_y" + This declares the symbol as one that should have the value y when + using "allnoconfig". Used for symbols that hide other symbols. + Menu dependencies ----------------- @@ -388,26 +393,3 @@ config FOO depends on BAR && m limits FOO to module (=m) or disabled (=n). - -Kconfig symbol existence -~~~~~~~~~~~~~~~~~~~~~~~~ -The following two methods produce the same kconfig symbol dependencies -but differ greatly in kconfig symbol existence (production) in the -generated config file. - -case 1: - -config FOO - tristate "about foo" - depends on BAR - -vs. case 2: - -if BAR -config FOO - tristate "about foo" -endif - -In case 1, the symbol FOO will always exist in the config file (given -no other dependencies). In case 2, the symbol FOO will only exist in -the config file if BAR is enabled. |