Install older gcc version?

volter · November 19, 2011, 11:44am

I installed some program that supports gcc up to 4.3.4 version, but in OpenSUSE 12.1 I have 4.6.2.
How can I install an older version of gcc?

martin_helm · November 19, 2011, 4:16pm

Am 19.11.2011 11:46, schrieb volter:
>
> I installed some program that supports gcc up to 4.3.4 version, but
> in OpenSUSE 12.1 I have 4.6.2. How can I install an older version of
> gcc?
>
You can compile it from source and install it into a non standard
directory to avoid conflicts with the system, but be warned this asks
for trouble using a program which is so outdated. Is there any chance
that where you have it from fixes that?
Which program is it? Maybe there is aptch somethere to make it
compatible with 4.6.

volter · November 19, 2011, 7:59pm

I have old version of Matlab and for finishing the installation I have to run some file (like described in the manual). It was running perfect in OpenSUSE 11.3.
From Matlab website I understood they support up to gcc 4.3.x - OpenSUSE 11.x . So if its a hard task to do I think I’ll wait for an update or use windows version.

martin_helm · November 19, 2011, 8:34pm

Am 19.11.2011 20:06, schrieb volter:
>
> I have old version of Matlab and for finishing the installation I have
> to run some file (like described in the manual). It was running perfect
> in OpenSUSE 11.3.
> From Matlab website I understood they support up to gcc 4.3.x -
> OpenSUSE 11.x . So if its a hard task to do I think I’ll wait for an
> update or use windows version.
>
>
I guess you tried what happens if you simply try with 4.6.2, what is the
error message?
I am afraid it will be some work without a guarantee for success making
a 4.3 work.

volter · November 19, 2011, 10:26pm

I don’t really know how to force the file work with gcc 4.6. I simply run the file in terminal and it printing a message about not supported version of gcc and stop the installation.

martin_helm · November 19, 2011, 10:56pm

Am 19.11.2011 22:36, schrieb volter:
>
> I don’t really know how to force the file work with gcc 4.6. I simply
> run the file in terminal and it printing a message about not supported
> version of gcc and stop the installation.
>
Ah, ok - I hoped for something more descriptive. To be honest, if I were
you I would use it with windows then until (hopefully) a solution from
MathWorks is available.

robin_listas · November 19, 2011, 11:13pm

On 2011-11-19 20:06, volter wrote:
>
> I have old version of Matlab and for finishing the installation I have
> to run some file (like described in the manual). It was running perfect
> in OpenSUSE 11.3.
> From Matlab website I understood they support up to gcc 4.3.x -
> OpenSUSE 11.x . So if its a hard task to do I think I’ll wait for an
> update or use windows version.

You can simply install 11.3 as a small virtual machine. Then you can run it
inside, or via ssh -X in the host. It will run slower, though, depending on
how many resources you assign the virtual machine.

–
Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)

martin_helm · November 19, 2011, 11:34pm

Am 19.11.2011 23:13, schrieb Carlos E. R.:
> You can simply install 11.3 as a small virtual machine. Then you can run it
> inside, or via ssh -X in the host. It will run slower, though, depending on
> how many resources you assign the virtual machine.
>
It is not that I did not consider myself such a solution, but what
stopped me from doing it is that 11.3 is soon end of live and the
performance penalty of a virtual machine could be a show stopper for
using Matlab (provided it is used for numerically intensive tasks, what
I assume since this is its intended use).

martin_helm · November 20, 2011, 1:56am

I just want to add that gcc 4.3.4 compiles without error, downloaded it
from here ftp://ftp.fu-berlin.de/unix/languages/gcc/releases/gcc-4.3.4
(any other mirror will do it also)


tar xvf gcc-core-4.3.4.tar.bz2
cd gcc-4.3.4
../configure --prefix=/opt/gcc-4.3.4
make #this will take a while
sudo make install

a full blown gcc is now in /opt/gcc-4.3.4 with all libraries and include
files, the difficult thing is now that I do not know the matlab
installer script, you need to figure out how to tell it to look for the
gcc in a non standard directory and to use that instead of the systems
gcc (and also the libraries and includes from there).
Maybe tweaking a few environment variables is enough, but you should ask
MathWorks about that.
(Note if the gcc core is not enough and you need also fortran and c++
you need to do the same for g++, gfortran and what else you need).

robin_listas · November 20, 2011, 2:28am

On 2011-11-19 23:34, Martin Helm wrote:

> It is not that I did not consider myself such a solution, but what
> stopped me from doing it is that 11.3 is soon end of live

That doesn’t matter, it is one of the advantages of virtualization. You
keep that VM isolated, only network with the host.

> and the
> performance penalty of a virtual machine could be a show stopper for
> using Matlab (provided it is used for numerically intensive tasks, what
> I assume since this is its intended use).

That is a problem, yes.

–
Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)