OK, just in time for Christmas, Santa has brought 64-bit gretl
on OS X. See

http://sourceforge.net/projects/gretl/files/osx-testing/

Great. Thank you Santa. I have spend this morning playing with it and your build works on my machine. I am also able to build gretl except that it seems to have references to /Applications/Gretl.app/Contents etc... even though I install it in /opt/local. Is this intended? I thought a homemade build would reside completely inside /opt/local if I did --prefix=/opt/local. When I run /opt/local/bin/gretl when the Gretl.app is not present I get

"...
/Applications/Gretl.app/Contents/Resources/share/gretl/ui/gretlmain.xml": No such file or directory"

and I cannot really figure out why is looking there. The file resides in /opt/local/share/gretl/ui/gretlmain.xml.

Best
Andreas