1 This does not compile the java files extracted, we leave that to hat/bld or maven
 2 
 3 Ensure cmake and jextract are in your path then :)
 4 
 5 $ cmake -B build
 6 $ cmake --build build --target extract
 7 
 8 To remove previously extracted sources (careful with this axe eugene !)
 9 
10 $ rm -rf */src
11 $ rm -rf build
12 
13 Then
14 
15 $ tree
16 
17 Should yield
18 
19 ├── CMakeLists.txt
20 ├── cuda
21 │   └── CMakeLists.txt
22 ├── opencl
23 │   └── CMakeLists.txt
24 ├── opengl
25 │   └── CMakeLists.txt
26 └── README.txt