As reported upstream ppc32 does not support those atomic operation natively and the software implementation is not present either (as of 4.9.1).
Since the implementation is only needed to run a particular test of the test suite, it should be ok to simply remove compilation of this test. Comments ? -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org