Heads up: gui-wm/wayfire requires now sys-devel/gcc[openmp]

[mv]

As the title says >=gui-wm/wayfire-0.9.0 does not compile (even fails to configure) when openmp is disabled on sys-devel/gcc.
This took me quite a while to detect, because I have a machine with only a single core which for this reason had -openmp globally.
I will not report a missing dependency on bugzilla, because adding dependencies on a particular compiler or compiler options appear to be wrong; probably not many people will run into this, anway.

[sam_]

You should, because:
a) there is a build system option for openmp which should be wired up;
b) there's a mechanism for at least detecting if the current compiler has OpenMP support and giving a nice message if not.

[Hu]

Even if you choose not to follow sam_'s request to report this, please post the specific messages that indicate this is the cause of the failure, so that future readers searching for that error will be led here.