NetCDF4 Fortran library may compile successfully and run for simple programs but segfault on programs where HDF5 is linked directly as well as NetCDF4.

A reason one might directly link both HDF5 and NetCDF is a program that need to read / write files in HDF5 as well as NetCDF format. The symptom observe thus far is the program segfault on nf90_open().

The fix is to compile HDF5 and NetCDF for yourself.