On 03/16/2017 02:44 PM, Bidwell, Christopher wrote: > Thanks for the quick response. rpm -ql of that package shows: > > I don't know anything really about fortran stuff. Does gfortran44 have > the same abilities and backward compatibility as g77 or f77? > > /usr/bin/gfortran44 > /usr/lib/gcc > /usr/lib/gcc/x86_64-redhat-linux > /usr/lib/gcc/x86_64-redhat-linux/4.4.7 > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/32 > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/32/libgfortran.a > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/32/libgfortran.so > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/32/libgfortranbegin.a > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/finclude > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/finclude/omp_lib.f90 > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/finclude/omp_lib.h > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/finclude/omp_lib.mod > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/finclude/omp_lib_kinds.mod > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/libgfortran.a > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/libgfortran.so > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/libgfortranbegin.a > /usr/libexec/gcc > /usr/libexec/gcc/x86_64-redhat-linux > /usr/libexec/gcc/x86_64-redhat-linux/4.4.7 > /usr/libexec/gcc/x86_64-redhat-linux/4.4.7/f951 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2002.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2002.libgfortran.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2003.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2003.libgfortran.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2004.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2004.libgfortran.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2005.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2005.libgfortran.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2006.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2006.libgfortran.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2007.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2007.libgfortran.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog-2008.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog.libgfortran.bz2 > /usr/share/doc/compat-gcc-44-gfortran-4.4.7/ChangeLog.ptr.bz2 > /usr/share/info/gfortran44.info.gz > /usr/share/man/man1/gfortran44.1.gz > Been a long time since I've had to deal with it, but it is my understanding that g77 development has ceased and that gfortran is the re-implementation of it, and is mostly compatible. I have no direct experience though.