Hi Jason Snyder,
to help you we need more information: what is the system you're trying to install the package on? (operative system, version, octave version, and so on)
Looking at the log you posted, I think some variable in the make file has not been filled. In particular I think it is the variable that contains the compiler executable path.
For example, in this line
"DF77_FUNC=F77_FCN -DHAVE_OCTAVE_ -v -c ov-netcdf.cc -I/usr/local/include -DHAVE_OCTAVE_INT "
there should be a compiler before the option "-D", it should read something like this
"DF77_FUNC=F77_FCN gcc -DHAVE_OCTAVE_ -v -c ov-netcdf.cc -I/usr/local/include -DHAVE_OCTAVE_INT "
Do you have development tools installed on your system?