util-linux-2.12r does not build rdev by default on amd64. Although you can give the kernel the parameters on the command line from the boot loader, it does come in handy when you can change the default in the kernel file (i.e. when entering boot command lines by hand). I will attach a simple patch (replaces x86_64 with intel in the ARCH variable in MCONFIG, same as is done for i.86 already).
Created attachment 84842 [details, diff] Simple patch
upstream said no