[Dune] Problems with linking an external library

[Sacconi, Andrea]

Hi Christian,

yeah, workaround is not the correct terminology, I agree.
The thing that puzzled me was that UMFPACKl, which is written in C, never gave me any problem of handling legacy C-headers.
That's why I was perplexed when I couldn't make this library be linked correctly.

Best,
Andrea
__________________________________________________________

Andrea Sacconi
PhD student, Applied Mathematics
AMMP Section, Department of Mathematics, Imperial College London,
London SW7 2AZ, UK
a.sacconi11 at imperial.ac.uk

________________________________________
From: Christian Engwer [christian.engwer at uni-muenster.de]
Sent: 16 September 2014 10:21
To: Sacconi, Andrea
Cc: Bernd Flemisch; dune at dune-project.org
Subject: Re: [Dune] Problems with linking an external library

Dear Andrea,

> extern "C"{
> #include "ldl.h"
> }

this is not a work-around, but the correct way to handle legacy
C-headers.

C++ allows many functions with the name name, but different
parameters, thus the C++ compiler automatically created new names,
wwhich include the parameters, i.e. mangled names. YOur problem was
that the lib included the plain C-names, but the program references
the mangled name.

Ciao
Christian