Created attachment 518722 [details] emerge --info ftlo related?
Created attachment 518724 [details] build.log
The filename is actually important, not just the error message.
*** This bug has been marked as a duplicate of bug 633930 ***
(In reply to Jeroen Roovers from comment #2) > The filename is actually important, not just the error message. dev-qt:qtcore-5.9.4-r1:20180210-225144.log