[BlackFly]

This was not my experience at all when trying to build Fortran code.

Which version of FFTW were they using? Undocumented. Hard binding to MKL as opposed to generic LAPACK usage? Ok, Intel fortran only then... Still missing some symbols? Oh, that's a symbol from this other esoteric library from the same group. Better see if I can download the sources for that. Etc.

There are projects without dependencies, then there are projects with dependencies in languages with sane development oriented package managers, then there are projects with dependency hell. I found fortran projects usually fell into one of the two extremes, certainly Fortran is not modern in the sense that it has no package manager which I believe most people would see as a prerequisite for a modern language.