Control: severity -1 serious Control: tags -1 + moreinfo
clang doesn't have a good way to set the baseline for a build, nothing as easy as in GCC with --with-arch=<baseline>.
I did that for both the armel and armhf architectures (see the arm32-defaults.diff patch), but this is unchecked for any other release architectures, and obviously wrong for some architectures.
Please could you run (at least on amd64) /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 --help and look for the last lines like Subdirectories of glibc-hwcaps directories, in priority order: x86-64-v4 (supported, searched) x86-64-v3 (supported, searched) x86-64-v2 (supported, searched) on the machines where you saw that?
