https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78744
aroldan <aroldan at protonmail dot ch> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Build errors on OS X 12.1 |Build errors on OS X 12.1 |with Xcode 8.1 on GCC 6.2.0 |with Xcode 8.1 GCC 6.2.0 --- Comment #2 from aroldan <aroldan at protonmail dot ch> --- c++: warning: couldn't understand kern.osversion '16.1.0 Undefined symbols for architecture x86_64: