manaworld 0.5.2-1 is not built with $RPM_OPT_FLAGS, see the c++ commands used: http://kojipkgs.fedoraproject.org/packages/manaworld/0.5.2/1.fc16/data/logs/x86_64/build.log 0.0.29.1-5 did not have this problem, see the g++ commands used: http://kojipkgs.fedoraproject.org/packages/manaworld/0.0.29.1/5.fc16/data/logs/x86_64/build.log
I think this is a false positive from the change from autotools to cmake. I have asked about this on the test list for confirmation.
It is not a false positive, the build logs and debuginfo package without sources in it clearly show it.
I made some bad assumptions. Namely that setting the CXX flags would affect the build and that cmake was hiding some of the stuff from me. (It was pretty late when I looked at this last night.) But now that I look at it again I see it isn't. I look at why the flags are not getting used and fix it.
This appears fixed in manaworld-0.5.2-2.fc16.