everywhere you link against blas or lapack in the setup.py script, I would
also link against gfortran.

Joachim

On Thu, Feb 4, 2010 at 2:15 PM, Dima Pasechnik <[email protected]> wrote:

> While trying to upgrade the cvxopt package for Sage to version 1.1.2
> of cvxopt, one encounters a build problem; more precisely, it's a
> runtime error that comes from  the dynamic library cholmod.so missing
> a symbol.
> I gather it had to be linked with against an appropriate Fortran
> library (libgfortran ?) on this particular platform/compiler (Linux
> x86_64, gcc 4.2.4)
> Please see:
> http://trac.sagemath.org/sage_trac/ticket/6456
>
> On Linux x86, when doing
>
> from cvxopt import cholmod
>
> I get
>
> ...cvxopt/cholmod.so: undefined symbol: _gfortran_st_write_done
>
> (this is with Sage 4.3.1)
> Could you please tell which cvxopt's Makefile(s) (?) to tweak and
> where?
>
> Thanks,
> Dima
>

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