I use my own binhost for few gentoo installs on laptops and ws. I found that qtwebkit automagicaly links libwoff2 if its available. lddtree /usr/lib64/libQt5WebKit.so.5.212.0 | grep woff2 libwoff2dec.so.1.0.2 => /usr/lib64/libwoff2dec.so.1.0.2 libwoff2common.so.1.0.2 => /usr/lib64/libwoff2common.so.1.0.2
*** This bug has been marked as a duplicate of bug 704748 ***