compilation.md

@@ -54,10 +54,16 @@ make install
 
 
 Instead of simply running `cmake`, you can run `ccmake` or `cmake-gui` to help you changing some
-configuration parameters. For examples to be able to write HDF5 file (assuming you installed the dependancies),
+configuration parameters. For examples to be able to deactivate HDF5 file writing (if you run into
+too much trouble to install all dependencies),
 you have to compile with:
 ```shell
-cmake . -DWITH_HDF5=True
+cmake . -DWITH_HDF5=False
+make
+```
+And to enable shared memory parallelization, then you need to run:
+```shell
+cmake . -DWITH_OPENMP=True
 make
 ```