Always use SET_AND_EXPOSE_TO_BUILD to set build variables (as noted by Tom)
This doesn't actually fix anything, but it's quite risky not to do so, as build defines could wind up set to unexpected values.
Created attachment 325413 [details]
Comment on attachment 325413 [details]
Clearing flags on attachment: 325413
Committed r224490: <https://trac.webkit.org/changeset/224490>
All reviewed patches have been landed. Closing bug.