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 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.
+ select should be used with care. select will force
+ a symbol to a value without visiting the dependencies.
+ By 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 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.
- numerical ranges: "range" <symbol> <symbol> ["if" <expr>]
This allows to limit the range of possible input values for int