I think, a %D in a spec creates a list of -L/a/b/c -L/d/e/f.  gcc -dumpspecs shows me that link_libgcc goes to %D but it does not show me what %D produces.  Is there a way to get gcc to dump that out?

Basically what I'm trying to do is find the list of library paths that GCC tells ld to use when it calls ld.

Thank you for your time,
Perry