Making World For amd64

Tim Daneliuk tundra at
Thu Jun 26 20:51:51 UTC 2008

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?


Tim Daneliuk     tundra at
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