fenics team mailing list archive

[Mandus <mandus@xxxxxxxxx>]

Hi,

you can usually fake things such that a 32bit binary can run on 64bit
linux - for instance I do that with acrobat.

It is however not so easy to build programs on a 64bit linux, either
for 64bit linux or 32bit linux, using a mixture of 32bit libs (the
fenics/dolfin libs) and 64bit libs.

I tried to install the binary fenics on my 64bit ubuntu right now. If
-m32 is added to the cflags and ldflags in the Makefile you can use
for instance the supplied libdolfin.so.0, only to get another problem
around the next corner. For instance, ncurses is usually required for
dolfin stuff, and the dev-version on your 64bit linux is probably
64bit. Hence, you end up mixing stuff, which is not good.

I think a better approach will be to create a 64bit binary version of
fenics. I guess we can replicate your scripts on my computer, Anders,
to get this.

Let's talk about it tomorrow :)


On 9/18/06, tomtzigt <tomtzigt@xxxxxxxxxxxxxxxx> wrote:
> SuSE 10 is an x86_64 target. That would explain why all the binary
> distributions have a 32bit and a 64bit distribution. Ok, do you or your IT
> support staff have an idea if we can fake a 32bit target on SuSE? I have to
> believe you can, but I can't find anything on the either the help system or
> even google for the moment (tried "running 32bit code on 64bit linux").
>
> Theo
>
> -----Original Message-----
> From: fenics-dev-bounces@xxxxxxxxxx [mailto:fenics-dev-bounces@xxxxxxxxxx]
> On Behalf Of 'Anders Logg'
> Sent: Monday, September 18, 2006 2:06 PM
> To: fenics-dev@xxxxxxxxxx; 'Discussion of DOLFIN development'
> Subject: Re: [FEniCS-dev] FEniCS 0.1.0-pre2
>
> Is this a 686 Linux machine?
>
> This really looks like a problem you would get if you compile on a
> different architecture.
>
> /Anders
>
>
> On Mon, Sep 18, 2006 at 02:02:56PM -0400, tomtzigt wrote:
> > Still the same problem with respect to the format of the binaries. Is
> there
> > a command line tool that we can use to quantify the .so format on these
> > different machines and compiler sets?
> >
> >
> >
> > Ignoring the old RedHat box, here is the SuSE log for the new pre2
> release:
> >
> > tomtzigt@tomtzigt-ws1:~/fenics/fenics-0.1.0-pre2/demo/dolfin/pde/poisson>
> > make
> > `dolfin-config --compiler` `dolfin-config --cflags` -c main.cpp
> > `dolfin-config --linker` -o dolfin-poisson main.o `dolfin-config --cflags`
> > `dolfin-config --libs`
> > libtool: link: warning: library
> > `/home/tomtzigt/fenics/fenics-0.1.0-pre2/lib/libdolfin.la' was moved.
> > libtool: link: warning: library
> > `/home/tomtzigt/fenics/fenics-0.1.0-pre2/lib/libxml2.la' was moved.
> > libtool: link: warning: library
> > `/home/tomtzigt/fenics/fenics-0.1.0-pre2/lib/libdolfin.la' was moved.
> > libtool: link: warning: library
> > `/home/tomtzigt/fenics/fenics-0.1.0-pre2/lib/libxml2.la' was moved.
> > /home/tomtzigt/fenics/fenics-0.1.0-pre2/lib//libdolfin.so.0: could not
> read
> > symbols: File in wrong format
> > collect2: ld returned 1 exit status
> > make: *** [dolfin-poisson] Error 1
> >
> > tomtzigt@tomtzigt-ws1:~/fenics/fenics-0.1.0-pre2/demo/dolfin/pde/poisson>
> > gcc --version
> > gcc (GCC) 4.0.2 20050901 (prerelease) (SUSE Linux)
> >
> > Theo
> >
> > -----Original Message-----
> > From: fenics-dev-bounces@xxxxxxxxxx [mailto:fenics-dev-bounces@xxxxxxxxxx]
> > On Behalf Of Anders Logg
> > Sent: Monday, September 18, 2006 12:19 PM
> > To: Discussion of FEniCS development; Discussion of DOLFIN development
> > Subject: [FEniCS-dev] FEniCS 0.1.0-pre2
> >
> > Please try the new package:
> >
> >     http://www.fenics.org/pub/software/fenics/v0.1/
> >
> > Unpack the file, run ./install and type 'source fenics.setup'.
> >
> > Then go to demo/dolfin/pde/poisson and type 'make'.
> >
> > If this works, then run the program by './dolfin-poisson' and plot
> > the solution with 'python plot.py'.
> >
> > This new version has been built with apg++ from autopackage which
> > could solve some problems. It has not been double compiled with
> > support for old g++ versions so you need a reasonably fresh g++
> > install.
> >
> > Does it work for anyone?
> >
> > /Anders
> >
> > md5sum: 66d7b40f9dc8f5ed626019e7bbb4cb04
> > _______________________________________________
> > FEniCS-dev mailing list
> > FEniCS-dev@xxxxxxxxxx
> > http://www.fenics.org/mailman/listinfo/fenics-dev
> >
> >
> >
> > _______________________________________________
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> > FEniCS-dev@xxxxxxxxxx
> > http://www.fenics.org/mailman/listinfo/fenics-dev
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--
Mandus
The only dr. Mandus around.