We are using the fortrangis library in some of our software: a Fortran interface to various GIS libraries and recently a client ran into a build problem with the proj library (unresolved externals). It seems to be due to a difference in the API: fortrrangis is based on an older version of the proj library than this client has installed.
So, now the question is: is there an up-to-date version of fortrangis?
Fortrangis is a very nice library. We have used it routinely in our projects, mostly to handle geotiff I/O, but I think it can do quite a bit more. Also the mainteiner was very responsive when I reported a compile issue with some specific version of gfortran.