A while back, I built some PPC64 (powerpc 64-bit) packages for MySQL. They were built on a POWER5 box, running Fedora Core 6, with glibc 2.5, using a Bitkeeper snapshot (public bkbits, 5.0.45 tag). All tests pass on ppc64, for what its worth. I’ll do periodic builds for Linux/PPC64 as and when its required (i.e. someone pings me or I need them for some reason).
Grab them from: ftp://ftp.linux.org.uk/pub/people/byte/mysql/
Hat tip to dwmw2 (for power5, bombadil) and Bryce (for ftp.linux.org.uk).