Created attachment 441648 [details] emerge --info Linking fails with several 'undefined reference to QPDFObjectHandle::...' errors. Adding '<app-text/qpdf-6.0.0:=' to RDEPEND fixes it for me.
Please attach the entire build log to this bug report.
Dunno, I re-ran (after syncing) to capture the build log and now all the linkage is intact. Closing.