{
  lib,
  libjpeg_turbo,
  stdenv,
}:
libjpeg_turbo.overrideAttrs (old: {
  # This overlay also reaches pkgsi686Linux. Its 12-bit floating-point code
  # uses x87, while x86-64-v3 uses FMA. Keep the tests enabled for both.
  cmakeFlags =
    (old.cmakeFlags or [ ])
    ++ lib.optional (
      stdenv.hostPlatform.isx86_64 && (stdenv.hostPlatform.gcc.arch or null) == "x86-64-v3"
    ) "-DFLOATTEST12=fp-contract"
    ++ lib.optional stdenv.hostPlatform.isi686 "-DFLOATTEST12=387";
})