pkgsrc on Big Sur on ARM

[John Klos <john%ziaspace.com@localhost>]

Hi,

I'm able to play with an ARM M1 Mac for a bit, so I figured I'd give it a 
spin with pkgsrc. Of course, ffmpeg makes a good benchmark, but building 
ffmpeg4 from pkgsrc failed in several places:

multimedia/x264-devel is too old, and builds using -armv7 (latest x264 works)

multimedia/libvpx needs CONFIGURE_ARGS+=--disable-runtime-cpu-detect

graphics/tiff fails with:

--- tif_stream.lo ---
In file included from tif_stream.cxx:29:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:37:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/ios:215:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__locale:14:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/string:506:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/string_view:175:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__string:57:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/algorithm:639:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/initializer_list:46:
In file included from 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/cstddef:37:
../version:1:1: error: expected unqualified-id
4.3.0
^

...and I have no idea what to do about that. Any ideas?

Thanks,
John