build_bootloader=`echo $$build_cfg | cut -d'=' -f1`; \\r
build_arch=`echo $$build_cfg | cut -d'=' -f2- | cut -d':' -f1`; \\r
build_mcu=`echo $$build_cfg | cut -d'=' -f2- | cut -d':' -f2`; \\r
build_bootloader=`echo $$build_cfg | cut -d'=' -f1`; \\r
build_arch=`echo $$build_cfg | cut -d'=' -f2- | cut -d':' -f1`; \\r
build_mcu=`echo $$build_cfg | cut -d'=' -f2- | cut -d':' -f2`; \\r