Re: More on the OO 64-bit source

On 29 October 2010 08:00, Jim McCarthy <[email protected]> wrote:
>
> Note there is also an officially supported Itanium 64-bit (ia64) release =
of the latest OpenOffice. =A0 I do not have much depth of C-programming exp=
erience myself, but one of the people working on Itanium support + developm=
ent of the Red-Hat-based "Scientific Linux CERN" Linux OS once mentioned to=
 me that ia64 was a more "stringent" (or strict) 64-bit implementation than=
 64-bit x86.=A0 His experience was such that source code upgraded from 32-b=
it x86 to 64-bit x86 was not necessarily guaranteed to be up-to-snuff for b=
uilding "as is" on ia64 -- i.e., some additional 64-bit upgrades to the sou=
rce code are frequently required in order to build the code successfully on=
 ia64.=A0=A0 Conversely 32-bit source code upgraded to adhere to the strict=
er 64-bit demands for building on ia64 were then fine building "as is" on 6=
4-bit x86.
>
> I can't say whether this is indeed true, or not -- and if true, whether t=
he existence of an Itanium release of OpenOffice has anything to do with ge=
tting those same source codes to build successfully on 64-bit Alpha platfor=
ms -- but I thought it was an interesting claim that one could apparently g=
et away with certain legacy 32-bit programming practices on 64-bit x86 that=
 were strictly forbidden on ia64.
>
> -- Jim
>

In terms of the code being useful on a big endian, 64bit, strict
alignment architecture; sparc64 has been supported for some time.

-Graham