make all

##</code><code>##

g77 -O2 -init-local-zero -fno-automatic io.o gtop.f -o gtop 
make: g77: Command not found
make: *** [gtop] Error 127

##</code><code>##

gcc-fortran
gcc-fortran 32bit
gcc-33fortran
gcc-33fortran -32bit
gcc46-fortran
gcc46-fortran-32bit
libg2c33
libg2c33-32bit
libgfortran46
libgfortran46 32bit
libquadmath46
libquadmath46 32bit