Making World For amd64

[Sean Cavanaugh]

--------------------------------------------------
From: "Tim Daneliuk" <tundra at tundraware.com>
Sent: Thursday, June 26, 2008 4:51 PM
To: "Kris Kennaway" <kris at FreeBSD.org>; "FreeBSD Mailing List" 
<freebsd-questions at FreeBSD.org>
Subject: Re: Making World For amd64

> Kris Kennaway wrote:
>> Tim Daneliuk wrote:
>>> Kris Kennaway wrote:
>>>> Tim Daneliuk wrote:
>>>>> Is there anything special one has to do when doing a make world
>>>>> intended for 64-bit FreeBSD or is it sufficient to build the 64-bit
>>>>> kernel and make world as everywhere else?
>>>> The same as everywhere else.
>>>>
>>>> Kris
>>>
>>> So, I take it that this means that all the userspace programs, ports,
>>> packages, utilities, etc. do *not* take advantage of the 64-bit
>>> extensions.  That is, only the kernel gets the benefit of the
>>> wider word.  Is that correct?
>>>
>>
>> No, everything is 100% native.
>>
>> Kris
>>
>
> OK, these may be really stupid questions but:
>
> 1) How does make world know whether to build 32-bit or 64-bit binaries?
>
> 2) Can a binary from a 32-bit FreeBSD system be run unmodified on the
>  64-bit system?
>
> 3) If I reboot with 32-bit or 64-bit kernels, does the system magically
>   somehow make the userland stuff work natively at the word width?
>   If so, how?
>
> TIA,


I take this to mean you have an i386 install and want to compile amd64 on 
it.