# arduino-builder > Compile arduino sketches. > DEPRECATION WARNING: this tool is being phased out in favor of `arduino`. > More information: . - Compile a sketch: `arduino-builder -compile {{path/to/sketch.ino}}` - Specify the debug level (default: 5): `arduino-builder -debug-level {{1..10}}` - Specify a custom build directory: `arduino-builder -build-path {{path/to/build_directory}}` - Use a build option file, instead of specifying `-hardware`, `-tools`, etc. manually every time: `arduino-builder -build-options-file {{path/to/build.options.json}}` - Enable verbose mode: `arduino-builder -verbose {{true}}`