On May 30, 2012, at 20:33, Søren Sandmann wrote: > Maybe the difference is that you are using "-O0" where Ryan is using > "-O2". The "K" constraint requires the argument to be compile-time > constant, which it is, but clang may not be able to see that without > optimization.
Confirmed: If I set configure.optflags=-O0 on the command line, the configure check whether to use MMX intrinsics correctly says "no" and pixman builds. But with -O1 or the default -O2 it says "yes" and the build subsequently fails. Will using -O0 be detrimental to performance, or is that a viable workaround we could put into the MacPorts portfile? Someone else in our ticket commented that we could use the --disable-mmx configure arg. Would that be better or worse? _______________________________________________ Pixman mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/pixman
