WEBKIT_COMPUTE_SOURCES is using ${DERIVED_SOURCES_DIR} directly. Instead it should rely on the directory specified by the target.
Created attachment 367065 [details] Patch
Comment on attachment 367065 [details] Patch Clearing flags on attachment: 367065 Committed r244103: <https://trac.webkit.org/changeset/244103>
All reviewed patches have been landed. Closing bug.