tcl-expect weirdness under Mac OS X

[Benny Siegert <bsiegert%gmail.com@localhost>]

I am trying to build dejagnu, which uses expect. The tcl-expect
package installed fine but does not run:

/opt/pkg/bin/expect
dyld: Library not loaded: libexpect545.so
  Referenced from: /opt/pkg/bin/expect
  Reason: image not found
Trace/BPT trap: 5

$ otool -L /opt/pkg/bin/expect
/opt/pkg/bin/expect:
libexpect545.so (compatibility version 5.45.0, current version 5.45.0)
/opt/pkg/lib/libtcl86.dylib (compatibility version 8.6.0, current version 8.6.4)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
version 1225.1.1)

Looks like some kind of rpath is missing. Interestingly, there are
several files with that name in the package:

/opt/pkg/lib/libexpect545.a
/opt/pkg/lib/libexpect545.so
/opt/pkg/lib/libexpect545.so.1.0
/opt/pkg/lib/tcl/expect5.45/libexpect545.so

Do others see the same thing? Any ideas?

--Benny.