Re: Update on adding additional x86_64-vX subarchitecture leves via glibc hwcaps

I tried to build a native x86_64_v3 package on OBS (as opposed to a hwcaps package generated by baselibs). Setting `BuildArch: x86_64_v3` fails with “no compatible architectures”, while setting `#!BuildTarget: x86_64_v3-linux` makes the build fail near the end on “installing all built rpms”, claiming the package is built for a different architecture. That's despite the ld.so claiming the build host supports v3. x86_64_v2 does not have any of the above problems — it fails later due to a bug in this script which tries to remove a nonempty directory: https://github.com/openSUSE/post-build-checks/blob/master/post-mkbaselibs-ch...