I was trying to build Aeon 0.9.7.1 today on macOS (10.12.3), but I am getting a warning at 25% for "skein.c.o", and next an error at 26% for "slow-hash.c.o". This is on a Mac with Haswell CPU.
Details posted at
http://pastebin.com/ATJNgpSP.
FYI, I built the previous release on macOS using brew, so I can't compare. Any ideas?
Try to clone master and build it, must be ok. Reply if it works or not.