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RE: GCC compiler -m64 option in cygwin
On 31 October 2007 13:19, Samuel Thibault wrote:
> Dave Korn, le Wed 31 Oct 2007 12:52:18 -0000, a écrit :
>> On 31 October 2007 12:41, Samuel Thibault wrote:
>>> Tim Prince, le Wed 31 Oct 2007 05:35:45 -0700, a écrit :
>>>> No, there is no 64-bit native support in cygwin. Even on linux, a
>>>> cross-gcc is needed to create 64-bit build on a 32-bit system,
>>>
>>> Nope, gcc now has multi-lib support.
>>
>> ITYM biarch.
>
> If you prefer, yes (the configure option is called
> --enable/disable-multilib).
Uh, no, that configures multilibbing, you're conflating two separate things
here; it's worth getting the terminology right. Biarch is a property of the
backend, which can generate 32/64 bit code regardless of whether or not you
have the right libgcc versions available or not. Multilib is a feature that
is used to support and complete the operation of biarch, the two work
together, but it's an independent and orthogonal feature, used also by many
non-biarch architectures.
cheers,
DaveK
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