updating druntime

[John Colvin]

On Thursday, 12 December 2013 at 16:44:28 UTC, Benji wrote:
> Hello,
> when I try to compile something with dmd,
> I get following message:
>
> /usr/include/dmd/phobos/std/bitmanip.d(416): Error: undefined 
> identifier '_xopCmp'
> Error: ICE: _xopCmp not found in object module. You must update 
> druntime
>
> How to 'update druntime' ?

how did you install dmd/druntime/phobos originally?