Hi Dr. Bangerth,

Thank you for your reply. You are right. When I checked for compilers I
have two versions of each compilers. I don't know why that is....I do have
petsc installed and I think that might have used different compilers. Is
there a way to tell dealii to choose compilers?

I have the following:

$ dpkg --list | grep compiler
ii  g++                                         4:5.3.1-1ubuntu1
                amd64        GNU C++ compiler
ii  g++-5                                       5.4.0-6ubuntu1~16.04.4
                amd64        GNU C++ compiler
ii  gcc                                         4:5.3.1-1ubuntu1
                amd64        GNU C compiler
ii  gcc-5                                       5.4.0-6ubuntu1~16.04.4
                amd64        GNU C compiler
ii  gfortran                                    4:5.3.1-1ubuntu1
                amd64        GNU Fortran 95 compiler
ii  gfortran-5                                  5.4.0-6ubuntu1~16.04.4
                amd64        GNU Fortran compiler
ii  hardening-includes                          2.7ubuntu2
                all          Makefile for enabling compiler flags for
security hardening
ii  libllvm3.6v5:amd64                          1:3.6.2-3ubuntu2
                amd64        Modular compiler and toolchain technologies,
runtime library
ii  libllvm3.8:amd64                            1:3.8-2ubuntu4
                amd64        Modular compiler and toolchain technologies,
runtime library
ii  libllvm3.8:i386                             1:3.8-2ubuntu4
                i386         Modular compiler and toolchain technologies,
runtime library
ii  libprotoc9v5:amd64                          2.6.1-1.3
               amd64        protocol buffers compiler library
ii  libxkbcommon0:amd64                         0.5.0-1ubuntu2
                amd64        library interface to the XKB compiler - shared
ii  protobuf-compiler                           2.6.1-1.3
               amd64        compiler for protocol buffer definition files

Please advise on what to do next. I really appreciate your help!


On Sat, Aug 12, 2017 at 4:50 PM, Wolfgang Bangerth <bange...@colostate.edu>

> On 08/12/2017 05:21 PM, drgeoffschr...@gmail.com wrote:
>> I'm wondering if I could tag onto this message. I'm having a similar
>> problem. Installed with no problems. However, when I run the tests, they
>> all fail with the error:
>> symbol lookup error: /usr/lib/libumfpack.so.3.1.0: undefined symbol:
>> amd_realloc
> That seems like a separate issue unless you also get the error messages
> about the CXXABI or GLIBCXX version mismatch.
> I think there was a question about your error on the mailing list a while
> ago. Can you try to search for it?
> Best
>  W.
> --
> ------------------------------------------------------------------------
> Wolfgang Bangerth          email:                 bange...@colostate.edu
>                            www: http://www.math.colostate.edu/~bangerth/

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