The tool lives inside DumpRenderTree (although it doesn't depend on it). It also link with tons of unnecessary libraries for no apparent reason. We should move it to a neutral place and enable it by default regardless of what version of the WebKit API you are building.
Created attachment 179936 [details] Patch
I would move the ImageDiff directory at the same level as DumpRenderTree - e.g. Tools/ImageDiff(/efl). We should probably check with other ports for their preference for the location.
Comment on attachment 179936 [details] Patch Clearing flags on attachment: 179936 Committed r138019: <http://trac.webkit.org/changeset/138019>
All reviewed patches have been landed. Closing bug.