After rev165267 buid-webkit uses CMake by defaut, so 'cmake' package needs to be installed on the system. That dependency should be included into Tools/gtk/install-dependencies script.
Created attachment 226164 [details] Patch
Comment on attachment 226164 [details] Patch Clearing flags on attachment: 226164 Committed r165299: <http://trac.webkit.org/changeset/165299>
All reviewed patches have been landed. Closing bug.