If you are running a PPC Mac and do NOT already have gfortran installed,
you will need to install the
gfortranlib_macppc.tar.gz.
Download this file to your SeaDAS distribution directory and untar it:
gunzip -c gfortranlib_macppc.tar.gz|tar -xvpf -
This provides the library: $SEADAS/gfortran/libgfortran.3.dylib
To allow this library to be seen by the SeaDAS binaries that require it,
you will need to set the dynamic linker environment variable:
export DYLD_LIBRARY_PATH=$SEADAS/gfortran