I've tried scons, waf, CMake, etc, always ended up hating them and return to standard Makefiles. SCons is the worst I've tried ever. As to the cost of hashing:

I've tried scons, waf, CMake, etc, always ended up hating them and return to standard Makefiles. SCons is the worst I've tried ever. As to the cost of hashing: "git status" runs on 0.009s and requires a full diff of my working directory?..