FYI, I investigated the problem with gst-libav on x86_64, and it turns out that it began when we updated nettle from 2.7 to 3.1, the latter of which is configured with --enable-fat. For details, see my post on bug-nettle:
http://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003389.html We could work around the problem by removing the --enable-fat configure option, although it will entail a lot of rebuilding. While we're at it, we should also update to nettle-3.1.1. Mark
