[Bug other/91084] download_prerequisites fails on OpenBSD

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91084

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
               Host|                            |openbsd

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
case $OS in
  "Darwin"|"FreeBSD"|"DragonFly")
    chksum='shasum -a 512 --check'
  ;;
  *)
    chksum='sha512sum -c'
  ;;
esac

probably OpenBSD needs similar treatment?