# 4.11. `make` targets

Open MPI supports all the `make` targets that are provided by GNU Automake, such as:

- `all`: build the entire Open MPI package

- `install`: install Open MPI

- `uninstall`: remove all traces of Open MPI from the installation tree

- `clean`: clean out the build tree

Once Open MPI has been built and installed, it is safe to run `make clean` and/or remove the entire build tree.