linking for dummies

[markd at macports.org]

I have an app where

"-lgcc_s.10.5 -lgcc -lSystem"

is getting appended at the end of the stuff getting linked, and I can't
figure out where this is coming from.  It appears to me that gcc is doing
it on its own.   Instead of the linker item "-lrrd" normally appearing at
the end, instead I see it in the middle like this:

"-lrrd -lgcc_s.10.5 -lgcc -lSystem"

and I'm told that is a problem.  But I can't for the life of me see the
Makefile doing anything that would cause this.  Does anyone know how this
extra stuff gets added on, or how to make "-lrrd" go on the end of the
linker line?

Mark