The first step, after installing XMake is to create a project.
[greg@p3 src]$ xmakep -h
Usage: xmakep [OPTIONS] [PROJECT_DIR]
xmakep OPTIONS:
    -b    backup local files prior to overwrite
    -D    enable Debugging info
    -e    make local copy of XMExtensions directory
    -f    force overwriting files; non-interactive
    -h    display help; exit
    -p    print the current project directory; exit
    -t    copy template files to local project directory
    -v    display version; exit