When I saw this error I just followed the instructions given in the error message and did
sudo port -f deactivate libunwind-headers and retried the installation, and it worked. I think I reactivated libunwind-headers after installing gcc10 Ciao Franco > On 18 May 2022, at 17:31, Tao Zhang <[email protected]> wrote: > > sudo port -f deactivate libunwind-headers
