After updating my system with emerge --sync; emerge -u world, the JPEG library was updated to version 7.0, and oowriter failed to start because it was looking for libjpeg.so.62: $ oowriter ~/Service/JJAS/intrinsic-motivation-final.docx/usr/lib64/openoffice/program/soffice.bin: error while loading shared libraries: libjpeg.so.62: cannot open shared object file: No such file or directory running revdep-rebuild --library=libjpeg.so.62 didn't help. All other apps and libraries (except KDE 3.5) were rebuild successfully (ie, revdep-rebuild --pretend doesn't find them).
Rebuild openoffice (either "emerge --oneshot openoffice" or try just "revdep-rebuild -v -- -a". If that does not fix it, reopen this bug.
*** Bug 282571 has been marked as a duplicate of this bug. ***
OK, so rebuilding OpenOffice *yet again* (with 'emerge --oneshot openoffice') works. Is it known why OpenOffice needs to be built twice to succeed? (Yes, it was definitely built the first time I ran revdep-rebuild.)
It may be possible with the preserved-libs feature of portage-2.2_rcX that openoffice linked against the preserved old lib, which was not possible after the second run since it was removed.