With a recent update to 8.2.2 I believe the patches mentioned are merged upstream. We have also made changes to the symbol exporting so we don't need to keep updating architecture symbols that aren't supposed to be exported. i.e.; I think this should build now without any patches.
But when I look at https://buildd.debian.org/status/package.php?p=libgc#problem-1 I'm seeing that it is not even trying to be built because: Dependency installability problem for libgc on arc: libgc build-depends on missing: - build-essential:arc So if build-essential is missing, I'm not sure how to progress this? -i
