mi/backtrace.c:71:7: error: no member named 'mc_gpregs' in 'struct unw_sigcontext' Just remove patch-include_libunwind-aarch64.h and patch-src_aarch64_Ginit.c (so all patches). No aarch64 patches are necessary anymore since https://github.com/libunwind/libunwind/pull/83 landed.
Committed. Thanks!
A commit references this bug: Author: sunpoet Date: Tue May 26 12:12:46 UTC 2020 New revision: 536625 URL: https://svnweb.freebsd.org/changeset/ports/536625 Log: Fix build on aarch64 PR: 246730 Submitted by: Greg V <greg@unrelenting.technology> Changes: head/devel/libunwind/files/