I did a "make distclean" followed by "make" on my Mac OSX 10.14.6, Xcode 11.2.1 and the build completed successfully:
[2019-11-18 14:22:10] SageMath version 9.0.beta6, Release Date: 2019-11-18 > Yes, Sage starts. > real 257m11.634s > user 280m20.436s > sys 31m35.438s > Sage build/upgrade complete! -- You received this message because you are subscribed to the Google Groups "sage-release" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-release/3bc5756c-679b-4525-be49-b587b5151de1%40googlegroups.com.
