below is error message:

configure: error: Unable to configure with Fortran support because configure could not determine the size of a Fortran INTEGER. Consider setting CROSS_F77_SIZEOF_INTEGER to the length in bytes of a Fortran INTEGER

When I use gcc 4.4.7, there's no error to make mpich 3.1.4.

and below is the process how to upgrade gcc:

wget ftp://ftp.gnu.org/gnu/gcc/gcc-5.2.0/gcc-5.2.0.tar.bz2
tar -jxvf gcc-5.2.0.tar.bz2
cd gcc-5.2.0
./contrib/download_prerequisites
cd ..
mkdir /usr/local/share/gcc-5.2.0
./gcc-5.2.0/configure --prefix=/usr/local/share/gcc-5.2.0/ --disable-multilib --enable-languages=c,c++,objc,obj-c++,java,fortran
make -j4
sudo make install