Building l4re packages and linking errors

Hi folks,

I'm afraid my configuration may have changed recently, possibly due to 
version changes in gcc, and I'm having some trouble compiling l4re, so I 
wanted to ping you to see if you had any insights.

Two separate issues I've had:

in an existing l4re build, executing make in an individual package 
sub-directory fails to find basic system headers in included files 
("stddef.h" and "stdarg.h" for example). I'm running make O=basel4rebuilddir

On the theory that l4re needs to be recompiled in order to set up links 
that may have changed since compilation of the last build, I've tried 
building l4re again, but I similarly run into a linker problem here:

gcc: symbol lookup error: 
/home/bryce/L4Linux/x86/l4re4/tool/gendep/64/libgendep.so: undefined 
symbol: dlsym


If you have any thoughts on what I might try, let me know!

Thank you!
Bryce