Finally I installed Fedora 20 (64 bits), I updated the system, and then I did:
(1) Install C-compiler:
# yum install gcc-c++
(2) Install gfortran:
$ su -c "yum install gcc-gfortran"
(3) Download Fortran compiler (g95-x86-linux.tgz) from
www.g95.org/ and:
# tar -zxvf g95-x86-linux.tgz
# ln -s $PWD/g95-install/bin/i686-pc-linux-gnu-g95 /usr/bin/g95
(4) Instal netCDF-C libraries
$ sudo yum install netcdf.x86_64
$ sudo yum install netcdf-devel.x86_64
(5) Download netcdf-fortran-4.4.0.tar.gz from unidata web page and:
# tar -zxvf g95-x86-linux.tgz
# ./configure
# make check
# make install
Apparently everything went fine.
Best regards