Gmsh

Gmsh is a 3D finite element grid generator with a build-in CAD engine and post-processor. Its design goal is to provide a fast, light and user-friendly meshing tool with parametric input and advanced visualization capabilities. Gmsh is built around four modules: geometry, mesh, solver and post-processing. The specification of any input to these modules is done either interactively using the graphical user interface or in ASCII text files using Gmsh's own scripting language [1].

Compiling gmsh

1. Install cmake. Optionally install also ccmake.
2. Install the following programs, libraries and development versions thereof:
   • libann
   • libfltk
   • libgmm++
   • libpetsc
   • libscotch
   • libslepc
   • gcc
   • gfortran
   • swig
   Keep in mind to install dependencies of these packages, too.
3. Download and extract sources of mmg3d [2].
4. Run "(c)cmake.".
   1. Make sure that the INCLUDE_SCOTCH variable points to the scotch headers (e.g. /usr/include/scotch).
   2. Make sure that a library is generated (COMPIL_SHARED_LIBRARY or COMPIL_STATIC_LIBRARY).
5. Run make.
6. Copy the library to the folder where libraries are stored (e.g. /usr/local/lib).
7. Run ldconfig.
8. Download and extract sources of gmsh.
9. Create a folder build in the folder gmsh-x.x.x-source.
10. Go to this folder.
11. Run "(c)cmake..".
    1. Set ENABLE_MPI to ON.
    2. Add to the PETSC_INC variable the path to the MPI includes (e.g. /usr/include/petsc;/usr/include/mpi).
    3. Set the variable MMG3D_INC to the source path of mmg3d (e.g. /usr/local/src/mmg3d4/build/sources).
    4. Set the variable MMG3D_LIB to the path of the compiled library (e.g. /usr/local/src/mmg3d4/build/libmmg3dlib4.0.so).
12. Run make and make install.

References

1. http://geuz.org/gmsh/
2. http://www.math.u-bordeaux1.fr/~cdobrzyn/logiciels/mmg3d.php
3. https://geuz.org/trac/gmsh/wiki/InstallingGmshDg