There is a bug in PyPy 1.8 that causes a compiling failure when -march=opteron is set in /etc/make.conf's CFLAGS. Upstream has a fix in their default branch [1]. The attachment is the revision converted to a Gentoo compatible patch. [1] https://bitbucket.org/pypy/pypy/changeset/02dc2f6160ee Reproducible: Always
Created attachment 302081 [details, diff] Fix to make -march=opteron work.
I've added the patch in -r1. Thanks for getting it fixed!