On Wed, Mar 30, 2022 at 08:32:04PM +1100, Zopolis0 via Gcc-help wrote: > I was asking in gcc-help because this isn't an error related to gcj > specifically, as it applies to any scenarios where there are multiple > definitions for the same thing in different lang.opt files. You can look at how d/lang.opt handles this for its conflicts with C. Warning: it is very underwhelming :-) It does require the documentation to be the same for both languages, which probably is a good idea anyway. Segher