Apparently this is the same bug as #735681. I am currently experiencing it with python 2.7.11-1 on sparc64 while trying to build sequitur-g2p for experimental distribution (https://buildd.debian.org/status/fetch.php?pkg=sequitur-g2p&arch=sparc64&ver=0%2Br1668-3&stamp=1461506544).
On other architectures compilation seems to correctly work, powerpc included. Bests, Giulio
