[jpstewart]

As you can see I compiled and installed the required third party Motif librarie. They're in /usr/local/lib and the configuration script sees them but won't use them? Kinda odd.

What about the corresponding headers?  In your screenshot, you show libXmNl.* in /usr/local/lib but the error is about XmNlList.h.  Where is that installed on your system?  It should be at /usr/local/include/XmNl/XmNlList.h for everything to work right.

Also, you could try 'fgrep XmNlList.h config.log' after getting the error message to see if there's any more useful information in there if the header file is in the right place.