gfortran-mingw-w64 software package provides GNU Fortran compiler for MinGW-w64, you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gfortran-mingw-w64
gfortran-mingw-w64 is installed in your system.
Make ensure the gfortran-mingw-w64 package were installed using the commands given below,
$ sudo dpkg-query -l | grep gfortran-mingw-w64 *
You will get with gfortran-mingw-w64 package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | Development |
| Package | gfortran-mingw-w64 |
| Version | 6.2.0-1ubuntu11+19.1 |
| Description | GNU Fortran compiler for MinGW-w64 |
| Sub Section | devel |