With this line uncommented, the build breaks: https://gist.github.com/mathiasbynens/a6ba96a723e1e4d75f34

Leaving it commented works fine.

The project’s `Makefile` is here: https://github.com/bwall/HashPump/blob/v1.0.2/makefile#L1-L3 Is this an upstream issue or am I doing something silly?