Making World For amd64

Kris Kennaway kris at FreeBSD.org
Thu Jun 26 21:53:04 UTC 2008


Tim Daneliuk wrote:
> Tim Daneliuk wrote:
>> Kris Kennaway wrote:
>>> Tim Daneliuk wrote:
>>>> 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?
>>> It always uses the native format.  amd64 == 64 bit, i386 == 32 bit
>> Don't mean to beat this to death, but can you say just a bit more
>> about this please.  If I am running an i386 kernel on 64-bit capable
>> processor, I assume I will get 32-bit binaries or not?  IOW, what
>> triggers makeworld to do something in 32- vs. 64-bit mode?  The
>> *kernel* currently executing or the underlying hardware capability?
>>
>>
> 
> Let me be even more specific:  If I install 32-bin x86 FreeBSD on, say,
> a Pentium D machine that is 64-bit capable, when I makeworld, will this
> result in 32- or 64-bit binaries?  Ditto if I do makekernel.
> 

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