Advice sought for ports/vis5d+

[Stephen Montgomery-Smith]

I am the maintainer of the science/vis5d+ port.  It was recently marked 
broken, and I submitted the PR ports/123233 to fix it.  However my fix 
doesn't seem to work for the amd64 - 
http://amd64.miwibox.org/tb2/errors/6.3-FreeBSD/vis5d+-1.2.1_8.log

The problem seems to be with the libgfx port.  A month or two ago, it must 
have somehow been brought in as part of the netcdf port.  But now it 
has become necessary to explicitly link against libgfx.a.  For whatever 
reason, this doesn't work on the amd64.

Any help or advice much appreciated.

Thanks, Stephen