Basic use of the mmgs library for an adaptation testcase

I/ Implementation

To call the mmgs library, you must:

1. build mesh and sol at MMG5 format;
2. call the MMGS library;
3. get the final mesh and sol.

example0_a

We read mesh and solution files using the MMGS_loadMesh and MMGS_loadSol functions. Results are saved using MMGS_saveMesh and MMGS_saveSol functions.

example0_b

The mesh and solution are hard coded.
They are build in MMG5 format using API functions and are recovered by the same way.
We show how to recover the mesh/sol.

II/ Compilation

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