[Insight-developers] vxl update

[Matthew McCormick (thewtex)]

Hi Hans,

Here is what I get,

mmmccormick at mpded ~$ gcc --version
gcc (GCC) 3.4.6 20060404 (Red Hat 3.4.6-8)

mmmccormick at mpded ~$ gcc4 --version
gcc4 (GCC) 4.1.0 20060515 (Red Hat 4.1.0-18)

I will try to see if I can use gcc4 over the next week, and we will
see how it goes.

Thanks,
Matt


On Wed, Dec 8, 2010 at 10:37 AM, Hans Johnson <hans-johnson at uiowa.edu> wrote:
> Matthew,
>
> It is the default, but is gcc4 already installed?  I'm almost certain that
> RedHat EL4 defaults to gcc3, but gcc4 is usually installed, or is easy to
> install.
>
> Perhaps you are going to prove my hypothesis incorrect.
>
> PS:  I've found significant performance improvements when using gcc4.  If
> performance is an issue, I'd recommend you use gcc4 in release mode.  There
> are some compiler options that really help with performance that are only
> available in gcc4.
>
>
> Hans
> --
> Hans J. Johnson, Ph.D.
> Hans-johnson at uiowa.edu
>
> 278 GH
> The University of Iowa
> Iowa City, IA 52241
> (319) 353 8587
>
>
>> From: "Matthew McCormick (thewtex)" <matt at mmmccormick.com>
>> Reply-To: "Matthew McCormick (thewtex)" <matt at mmmccormick.com>
>> Date: Wed, 8 Dec 2010 09:38:48 -0600
>> To: Bill Lorensen <bill.lorensen at gmail.com>
>> Cc: Hans Johnson <hans-johnson at uiowa.edu>, ITK <insight-developers at itk.org>
>> Subject: Re: [Insight-developers] vxl update
>>
>> On Wed, Dec 8, 2010 at 9:08 AM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
>>> I don't think we should drop gcc 3.x. For example, my mingw gcc
>>> compiler is 3.4.5 and builds ITK just fine. It is a recent download of
>>> mingw.
>>>
>>> I'm sure there are a lot of folks out there still using gcc 3.x
>>>
>>
>> It is default for the Condor cluster I use.
>
>