From: Joshua Anderson (
Date: Wed Feb 03 2010 - 15:39:52 CST

I'm attempting to create a build of VMD on my mac linked with a
specific python I have installed (via macports if you must know, not
that it matters). The system is a recent intel iMac running Mac OS X

The configuration I'm using to build is:

I've navigated the VMD compiling docs, built the plugins without
problems, modified the configure scripts to point to the macports
libraries and am now compiling vmd proper. Everything compiles, but I
get the following errors in the linking phase.

$ make
Linking vmd_MACOSXX86 ...
ln: ./foobar: File exists
failed to find vmdmac/vmdmac.r
### /Developer/Tools/Rez - SysError 0 during open of "vmdmac.r".
Fatal Error!
### /Developer/Tools/Rez - Fatal Error, can't recover.
vmdmac.r: ### /Developer/Tools/Rez - Since errors occurred, ../
MACOSXX86/vmd_MACOSXX86's resource fork was not written.
make: *** [vmd_MACOSXX86] Error 3

The vmdmac.r file does not show up in the source tarball. I found this
ancient post regarding it:
  . If I use the vmdmac.r file from that post, vmd does compiles and
link successfully, but I still have problems at that point.

I then make install VMD to a test dir to try it out. Running bin/vmd
errors out with vmd_MACOSX not existing. OK, update that to MACOSXX86,
run bin/vmd again and VMD loads, but the menus, opengl display, etc...
do not respond to any mouse clicks. I can quit by typing quit in the
terminal window I used to launch it, though.

Any ideas what am I doing wrong?

I don't think the problem is due to any library mismatching. I've
triple checked that all include and library directories are pointing
to Tcl, Tk, and FLTK installed by macports. otool confirms that all
those libraries are linked from macports (/opt/local/*)
$ otool -L vmd_MACOSXX86
        /usr/lib/libmx.A.dylib (compatibility version 1.0.0, current version
(compatibility version 1.0.0, current version 1.0.0)
(compatibility version 1.0.0, current version 1.0.0)
        @rpath/libcudart.dylib (compatibility version 1.1.0, current version
(compatibility version 2.6.0, current version 2.6.0)
        /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
version 111.1.4)
        /opt/local/lib/libtk8.5.dylib (compatibility version 8.5.0, current
version 8.5.8)
        /opt/local/lib/libtcl8.5.dylib (compatibility version 8.5.0, current
version 8.5.8)
        /opt/local/lib/libnetcdf.4.dylib (compatibility version 5.0.0,
current version 5.0.0)
(compatibility version 2.0.0, current version 136.0.0)
        /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current
version 7.4.0)
        /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current
version 1.0.0)
CoreServices (compatibility version 1.0.0, current version 32.0.0)
CoreFoundation (compatibility version 150.0.0, current version 476.19.0)
ApplicationServices (compatibility version 1.0.0, current version

Joshua A. Anderson, Ph.D.
Chemical Engineering Department, University of Michigan