Fastbuild https://www.fastbuild.org/docs/home.html is the free distributed compilation system many game companies use. The combination of automatic unity builds (simply appending many .cpp source files together into very large combined files), caching and distributed compilation together gives you extremely fast C++ builds.

Also supports creating project files that are compatible with XCode and Visual Studio so you can just build from those IDE's and a pretty flexible dependency based build file format that can accomodate any kind of dependency.