On Friday, June 13, 2003, at 02:49 AM, [EMAIL PROTECTED] wrote:


Message: 9
Date: Thu, 12 Jun 2003 22:21:46 -0500
From: Jonathan Polley <[EMAIL PROTECTED]>
Subject: [Flightgear-devel] 64-Bit Question
To: [EMAIL PROTECTED]
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII; format=flowed

Now that 64-bit processors are becoming more available, does anyone
know of any problems that FlightGear may have running on a 64-bit
processor (Opteron or PowerPC 970)?  I am assuming that those areas
that would be sensitive to data sizes (i.e., file formats) are safe?


AFAIK, FlightGear runs on SGI systems, some of which have 64-bit MIPS processors. The important part isn't really up to FlightGear - more that the compiler supports the architecture properly - which will likely be the case if a system is shipped with these new 64-bit chips. Other chips like the 970 don't even need a new compiler as they are 32-bit compatible.


I'm not certain if the size of data types such as ints and pointers will expand to 64-bits in the compiler. I don't find that likely since it will break a lot of existing code. So even if it does data type expansion, I expect there will be a switch to disable that.


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