CentOS - Sep 2010 - centos 5.5 oscar: gcc41, gcc44 and gfortran41, gfortran44

Hi,

I'm totally new with centos...we have a cluster in our labo with centos
oscar. The gcc which was provided with the release is gcc41 and
gfortran41. There are packages for gcc44 and gfortran44. I have
installed them.

But the gcc is not a link to gcc41 or gcc44. it is just an executable.
idem for gfortran. So which is the good way on centOS to choose the
gcc44 and gfortran44 per default.

Thx a lot!
Best regards,
Guillaume

On Wed, Sep 01, 2010 at 05:35:23PM +0200, giggzounet
wrote:
> I'm totally new with centos...we have a cluster in our labo with centos
> oscar. The gcc which was provided with the release is gcc41 and
> gfortran41. There are packages for gcc44 and gfortran44. I have
> installed them.
> But the gcc is not a link to gcc41 or gcc44. it is just an executable.
> idem for gfortran. So which is the good way on centOS to choose the
> gcc44 and gfortran44 per default.
The easiest way in most cases is put 'export CC=gcc44' in your bash
profile.



-- 
Matthew Miller           mattdm at mattdm.org         
<http://mattdm.org/>

From: giggzounet <giggzounet at gmail.com>
> I'm totally new with centos...we have a cluster in our labo with 
centos
> oscar. The gcc which was provided with the release is gcc41  and
> gfortran41. There are packages for gcc44 and gfortran44. I  have
> installed them.
> But the gcc is not a link to gcc41 or gcc44. it  is just an executable.
> idem for gfortran. So which is the good way on centOS  to choose the
> gcc44 and gfortran44 per default.
Are you sure you did not update the packages instead of install...?
To list the packages files :
  rpm -ql PACKAGENAME
And check what is where...

JD

giggzounet wrote:
> Hi,
> 
> I'm totally new with centos...we have a cluster in our labo with centos
> oscar. 
> But the gcc is not a link to gcc41 or gcc44. it is just an executable.
> idem for gfortran. So which is the good way on centOS to choose the
> gcc44 and gfortran44 per default.
> 
Hi

I not sure if I understood the problem, but if your are using OSCAR, and 
if I remember right, you can install as many compiler as you want, but 
you select using the utility "module", like "module load
gcc41" or
"module load gcc44". Of course, you have to configure the environment.

Then you put the right module in your configuration file: bashrc or 
bash_profile.

Hope this helps

Marcelo