ncview 2.0-0.1.beta4 is not built with $RPM_OPT_FLAGS: http://kojipkgs.fedoraproject.org/packages/ncview/2.0/0.1.beta4.fc16/data/logs/x86_64/build.log 1.93c-6 did not have this problem: http://kojipkgs.fedoraproject.org/packages/ncview/1.93c/6.fc13/data/logs/x86_64/build.log
Thanks. Fixed with http://koji.fedoraproject.org/koji/taskinfo?taskID=3000420