[Gmsh] Error linking

[Agnese, Marco]

Hi Christophe,
I compiled the version gmsh-2.8.4-svn-20140206 with the same procedure I posted yesterday. 
Then I try to run this simple code:

#include <iostream>

#include <stdio.h>
#include "Gmsh.h"
#include "GModel.h"

int main(int argc, char **argv)
{

  GmshInitialize(argc, argv);
  GmshSetOption("General", "Terminal", 1.);
  GmshSetOption("General", "Verbosity", 99.);
  GModel *m = new GModel();

  m->setFactory("Gmsh");

  GVertex *v1 = m->addVertex(0, 0, 0, 0.1);
  GVertex *v2 = m->addVertex(1, 0, 0, 0.1);
  GVertex *v3 = m->addVertex(1, 1, 0, 0.1);
  GVertex *v4 = m->addVertex(0, 1, 0, 0.1);

  std::vector<GEdge*> edges;
  edges.push_back(m->addLine(v1, v2));
  edges.push_back(m->addLine(v2, v3));
  edges.push_back(m->addLine(v3, v4));
  edges.push_back(m->addLine(v4, v1));

  std::vector<std::vector<GEdge*> > loop;
  loop.push_back(edges);
  GFace *f = m->addPlanarFace(loop);

  m->mesh(2);
  m->writeMSH("test.msh");
  delete m;
  GmshFinalize();

}

It compiles correct but when I run it the code doesn't do anything. Indeed the content of test.msh is

$MeshFormat
2.2 0 8
$EndMeshFormat
$Nodes
0
$EndNodes
$Elements
0
$EndElements
.

The output of the debug is 

Debug   : Surface: 1
Debug   : SVD    : 1,1,0 (min=2)
Debug   : Plane  : (0 x + 0 y + 1 z = 0)
Debug   : Normal : (0 , 0 , 1 )
Debug   : t1     : (0 , 1 , 0 )
Debug   : t2     : (1 , 0 , 0 )
Debug   : pt     : (0 , 0 , 0 )
Error   : Mesh module not compiled

Is it a problem in compiling the library or I miss something when I link it to my own code?

Thank you very much,
Marco


________________________________________
From: Christophe Geuzaine [cgeuzaine at ulg.ac.be]
Sent: Thursday, February 06, 2014 8:18 AM
To: Agnese, Marco
Cc: gmsh at geuz.org
Subject: Re: [Gmsh] Error linking

Hi Marco,

Indeed, it's a little incompatibility in gmsh 2.8.3 - it should be fixed with the latest nightly snapshot. Can you give it a try?

Christophe

On 05 Feb 2014, at 20:20, Agnese, Marco <m.agnese13 at imperial.ac.uk> wrote:

> Hello GMSH,
> I am trying to compile a simple code which uses GMSH API.
> I compiled the GMSH source as:
>
> cmake -DDEFAULT=0 -DENABLE_BUILD_LIB=1 -DENABLE_BUILD_SHARED=1 -DENABLE_BUILD_DYNAMIC=1 -DCMAKE_INSTALL_PREFIX=../lib_install ..
> make lib
> make shared
> make install/fast
>
> and everything it is fine.
> When I compile my code with the command
>
> g++ -c -m64 -pipe -O2 -Wall -W -fPIE  -I/usr/share/qt5/mkspecs/linux-g++-64 -I../gmsh_test -I../../gmsh-2.8.3-source/lib_install/include/gmsh -I. -o main.o ../gmsh_test/main.cpp
>
> and link with the command
>
> g++ -m64 -Wl,-O1 -o gmsh_test main.o   -L/home/ma2413/gmsh_test/gmsh_test/../../gmsh-2.8.3-source/lib_install/lib/ -lGmsh
>
> I obtain the following errors
>
> $HOME/gmsh_test/gmsh_test/../../gmsh-2.8.3-source/lib_install/lib//libGmsh.so: undefined reference to "typeinfo for Field"
> $HOME/gmsh_test/gmsh_test/../../gmsh-2.8.3-source/lib_install/lib//libGmsh.so:undefined reference to "FieldManager::get(int)"
>
> I don't know what I am doing wrong.
>
> Thank you very much,
> regards,
> Marco.
>
> _______________________________________________
> gmsh mailing list
> gmsh at geuz.org
> http://www.geuz.org/mailman/listinfo/gmsh

--
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine