Example of basic use of library libmmgs for a level-set discretization test case

I/ Implementation

We read the mesh and level-set values at the mesh nodes and then, we discretize the implicit function and optimize the mesh.

II/ Compilation

1. Build and install the mmgs shared and/or static library. We suppose in the following that you have installed the mmgs library in the **_$CMAKE_INSTALL_PREFIX_** directory (see the installation section of the setup guide);
2. compile the main.c file specifying:
   • the mmgs include directory with the -I option;
   • the mmgs library location with the -L option;
   • the mmgs library name with the -l option;
   • for the static library you must also link the executable with the math library and, if used for the mmgs library compilation, the scotch and scotcherr libraries;
   • with the shared library, you must add the ***_$CMAKE_INSTALL_PREFIX_** directory to your LD_LIBRARY_PATH.

‍Example 1
Command line to link the application with the mmgs static library (we supposed here that the scotch library is installed in the **_$SCOTCH_PATH_** directory):

gcc -I$CMAKE_INSTALL_PREFIX/include/mmg/mmgs main.c -L$CMAKE_INSTALL_PREFIX/lib -L$SCOTCH_PATH -lmmgs -lscotch -lscotcherr -lm

‍Example 2
Command line to link the application with the mmgs shared library:

gcc -I$CMAKE_INSTALL_PREFIX/include/mmg/mmgs main.c -L$CMAKE_INSTALL_PREFIX/lib -lmmgs
export LD_LIBRARY_PATH=$CMAKE_INSTALL_PREFIX/lib:$LD_LIBRARY_PATH