[Insight-developers] 64-Bit Transition Guide: Compiling 64-Bit Code Using GCC

[Sean McBride]

On 10/31/08 10:35 AM, Luis Ibanez said:

>    -Wall
>    -Wconversion
>    -Wshorten-64-to-32
>    -Wformat
>
>
>More details here:
>http://developer.apple.com/documentation/Darwin/Conceptual/64bitPorting/
>building/chapter_5_section_2.html

Despite what that document says, I would generally recommend against -
Wconversion.  It generates warnings for perfectly correct code.  In gcc
4.3, this useless behaviour of -Wconversion has been changed to be more
useful:
<http://gcc.gnu.org/gcc-4.3/changes.html>

Alas, Apple's gcc fork is at 4.2 not 4.3. :(

Also, note that -Wshorten-64-to-32 is only in Apple's fork of gcc, not
the gcc mainline. :(

-- 
____________________________________________________________
Sean McBride, B. Eng                 sean at rogue-research.com
Rogue Research                        www.rogue-research.com 
Mac Software Developer              Montréal, Québec, Canada