On Fri, Aug 12, 2022 at 1:14 PM David Knezevic via petsc-users < petsc-users@mcs.anl.gov> wrote:
> I get a configure error when building PETSc 3.17.4 on Ubuntu 22.04. The > configure.log is attached. > > This error seems to only occur when we use --with-clanguage=cxx. We need > to use that object when building with complex numbers. > > Guidance on how to resolve this would be most appreciated. > 1. I think your existing MUMPS build is incompatible (but it is hard for us to tell). Remove it rm -rf $PETSC_DIR/$PETSC_ARCH/externalpackages/git.mumps and reconfigure 2. You can also use C99 for complex numbers, but your application code might already be using C++. Thanks, Matt > Thanks, > David > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>