To just get going then just git clone ... this and in the directory just run ./build-run.sh, and you can pass any usual nonius options to it as well (can start with --help if curious).
To do things manually then create the build system with something like (or ninja or whatever, this will use your system default):
rm -r Build/release; cmake -H. -B"Build/release" -DCMAKE_BUILD_TYPE=ReleaseThen build it with (or add like -j9 for 9 jobs with MakeFiles or so, etc...):
cmake --build "Build/release"