% MPICH 1.2.6 installation. The Fortran part is with both g77 and g95

cd username
tar -zxovf mpich.tar.gz
mv mpich-1.2.6 mpich-1.2.6-install
chown -R username mpich-1.2.6-install
chgrp -R users mpich-1.2.6-install
chmod 755 -R mpich-1.2.6-install
cd mpich-1.2.6-install

export FC=g77 ; echo $FC
configure --enable-sharedlib --disable-f90 --prefix=/usr/local/mpich-1.2.6 
make
make install
exit

export FC=g95 ; echo $FC
export F90=g95 ; echo $F90
configure --enable-sharedlib --prefix=/usr/local/mpich-1.2.6
make
make install

make testing

cd
cd /usr/local
chown -R root /usr/local/mpich-1.2.6
chgrp -R root /usr/local/mpich-1.2.6
chmod 755 -R /usr/local/mpich-1.2.6