I had this
dyld: Library not loaded: /usr/local/lib/libgfortran.3.dylib
Referenced from: /Users/jdsant/Downloads/star/bin/gaia/gaia_wish
Reason: image not found
problem and was becoming very frustrated until I figured out that per the instructions on the GFortran website, that you must unzip the gcc file in the terminal, not using your browser. So, after downloading gcc-5.0-bin.tar.gz, I executed:
$ gunzip gcc-5.0-bin.tar.gz
$ sudo tar -xvf gcc-5.0-bin.tar -C /
this unpacked the file, but then received a very long error stating "Application initialization failed: no display name and no $DISPLAY environment variable" and "gaia was not properly installed". I then executed:
$ startx
which started X11, and then opened xterm. I then restated in xterm:
$ export STARLINK_DIR=/Users/kristen/Downloads/star-2014A
$ source $STARLINK_DIR/etc/profile
$ gaia &
and another GUI for GAIA Starlink popped up and it all worked