See http://koji.fedoraproject.org/koji/getfile?taskID=596775&name=build.log Can remove some of the failures by changing CFLAGS to "-m64", but not all: Testing soft normalized long double -> long conversions *FAILED* Testing soft normalized long double -> unsigned long conversions *FAILED* Testing soft long -> long double conversions *FAILED* Testing soft unsigned long -> long double conversions *FAILED*
-fno-strict-aliasing doesn't help.
Why don't you just %ifnarch ppc64 the call to make check?
Well, I rather not ship a broken library. I'm still in communication with upstream. Looks like long double support may be considered experimental at this point, so I may disable the check on ppc64 for now.
Shipping hdf5 on pp64 with tests disabled. Keep testing new releases to see if this gets fixed.