external_project = import('unstable-external_project') application_source = meson.current_source_dir() external_project.add_project( configure_zephyr, configure_options: [ '--source-tree', application_source, '--build-tree', meson.current_build_dir() / 'build', '--board', board, '--zephyr-base', zephyr, '--zephyr-modules', ';'.join(zephyr_modules), ], verbose: true, ) application = custom_target('application', output: ['application.bin'], command: [ build_zephyr, '--build-tree', meson.current_build_dir() / 'build', '--binary-name', 'zephyr.bin', '--target-name', 'application.bin', ], build_by_default: true, install: true, install_dir: 'website/static', )