11/xorg-libraries didn't install xrender.pc which is required by xcursor.pc. attached a (unverified) patch obtained from Xorg's bugzilla changed for fbsd pkg-config *.pc installation path: http://freedesktop.org/bugzilla/show_bug.cgi?id=478
Responsible Changed From-To: freebsd-ports-bugs->anholt Over to anholt. FWIW, I've been getting the same error too.
State Changed From-To: open->closed Committed, thanks!
Responsible Changed From-To: anholt->x11 Committed, thanks!