On 15/05/2017 12:11, Matthias Kretz wrote: > I'm looking for help on improving the compile times of my unit tests. Compile > times of >60s per TU is making my life hard. > Alternatively, if you can tell me there's nothing I can do, then I can accept > my fate and stop worrying about compile time optimizations. [...] > > If you have any ideas what I could do (other than "test less"), I'd like to > try it. If compile-time is an issue (rather than run-time) perhaps you can try reducing the optimization level to -O1. You should also test at -O0. If -O1 has acceptable compile-time and run-time, then you're (mostly) done. Perhaps just a single optimization tickles a pathological corner case? Regards.