build_win_msys.md

@@ -76,10 +76,12 @@ Get [git for windows](https://git-scm.com/download/win), or alternatively, insta
 ```sh
 git lfs install # enable large file support
 git clone git@gitlab.uliege.be:am-dept/dartflo.git
+cd dartflo
+git submodule init
+git submodule update
 ```
 Compile DART in a MSYS-MINGW terminal
 ```sh
-cd dartflo
 mkdir build && cd build
 export INCLUDE="${INCLUDE}:/mingw64/include/eigen3"
 cmake -C ../CMake/msys2.cmake ..