openssl: don't build tests if check is disabled

        # the code above, inhibiting `./Configure` from adding the

        # conflicting flags.

        "CFLAGS=-march=${stdenv.hostPlatform.gcc.arch}"

      ];

      ]

      # tests are not being installed, it makes no sense

      # to build them if check is disabled, e.g. on cross.

      ++ lib.optional (!finalAttrs.finalPackage.doCheck) "disable-tests";

      makeFlags = [

        "MANDIR=$(man)/share/man"