Precompiled header for other compilers

[phobos2077]

Would be nice to make the PrecompiledHeader cmake script work with other compilers .

Current solution only works properly with MSVC and is based on this: https://github.com/larsch/cmake-precompiled-header.
It claims to support GCC but in reality it doesn't work (maybe only on some setups). Best guess that it's related to some flags being different for PCH compilation (because PCH is compiled manually by custom build command...).

[Mixaill]

Maybe you should use cotire? It supports MSVC, GCC/MinGW, Clang and Intel.

https://github.com/sakra/cotire