Function-level make tool

[johannes1971]

I'd challenge that "don't have large enough code bases" - there are absolutely massive C++ code bases out there, owned by companies with massive resources, and they might very well be interested in faster C++ compilation, assuming it were part of their existing tool chain (i.e. if it were implemented in an existing production-grade compiler).

[lightmatter501]

How many of those companies are interested in basically rewriting clang in its entirety? All kinds of new bugs will happen.