C++ and C only filters

[kaidokert]

First, thanks for compiling this !

Is there a way of parsing out specific flags that are either C++ or C only ? I'm trying to build a cmake module out of this that tests the latest set on the compiler flags on whatever it compiles on and optionally adds working ones into a list.

See here and here

Ideally though, one doesn't want to spend time testing flags that are not applicable for the language in the first place.

EDIT: also see this meticulously hand built list here, i'm pretty sure i dont want to do this https://github.com/embecosm/llvm-extended-documentation/blob/master/support-code/opt-check.sh

[pkolbus]

I've got a fork that is parsing the applicable languages, see pkolbus@8fe472a. Haven't looked for an equivalent in clang since only gcc is picky about supplying a C++ flag to a C compile and vice versa.

If we wanted to actually filter the output by language, the INTERESTING_LANGUAGES constant could be made an argument.

@Barro, any interest?