I'm failing to build WebKitGTK for i686 because it's running out of memory. Nothing I've tried has been able to reduce memory enough to successfully link. I've documented this here: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/O3G7HNM45FXRQ4TTIHJKAKQPB7U4VR2E/
Per the mailing list discussion, we tracked down the problem to a CMake change. Won't need this bug after all.