Mac build fails unless --disable-Bsymbolic explicitly passed
Currently macOS builds fail unless --disable-Bsymbolic is passed (-Bsymbolic is an ELF-specific linker option, and not supported on macOS).
It looks like configure.ac's definition of --disable-Bsymbolic explicitly sets enable_Bsymbolic=yes if not passed, which bypasses the ability to auto detect it on the linker. Setting it instead to "auto" should work correctly on both Linux and Mac.
(Will test tomorrow, on a plane now.)