Given a buildlink.mk, "buildlink" tries to know the place of the
source files (installed library files) relying on the information just
got at the time the "make" is invoked.  In other words, "buildlink"
assumes that {,X11}PREFIX have never changed since the package was
installed.

This scheme obviously breaks if an user installs xpkgwedge after
installing some non-xpkgwedge'ed X-packages, or changes PREFIX
somewhere else than previous.

So now... I want to know whether those who are facing buildlink
problems install X-prefix'ed packages across /usr/X11R6 and /usr/pkg
with xpkgwedge or not.

Thanks for your patience!
Masao