Ever forget, especially after you've recompiled a port to alleviate
a problem, what arguments you compiled in? Here are a few suggestions
as to how to do it:

$cd /usr/ports/foo/bar
$make show=MAKE_FLAGS
$make show=CONFIGURE_ARGS
$make show=FAKE_FLAGS
$make show=CFLAGS

You could also do this to see if there's a problem:

Check bsd.port.mk(5)

In my particular case, since OpenBSD has some licensing problems with
flash and it's no longer included, at least for the time being, I thought
I'd give gnash http://www.gnu.org/software/gnash/ a try. It worked fine
on simple stuff, but tended to choke now and then on more complicated
stuff and, possibly, swf files that were created with newer versions of
flash. Either way, I got tired of it barfing up its core. So, instead of
using the package like I had been doing, I did a pkg_delete on it and
built it from the port. Later, when talking to my friend, I couldn't
remember all the -D arguments I had found in the Makefile and used,
thinking they might help. He suggested the previous items listed above.
What worked for me was:

$make show=CONIGURE_ARGS 

Hope somewhere along the way, this helps someone out like it did me.