Copy the headers. Set a specific derived sources directory.
Created attachment 367962 [details]
I'm not totally ready to try and make GTK/WPE work with copied WebKit headers. I do however want to continue on with https://bugs.webkit.org/show_bug.cgi?id=197174 which will refactor the copying targets.
Created attachment 367964 [details]
Comment on attachment 367964 [details]
Clearing flags on attachment: 367964
Committed r244541: <https://trac.webkit.org/changeset/244541>
All reviewed patches have been landed. Closing bug.