option('kernel_dir', type: 'string', value: '',
description: 'Path to the kernel for building kernel modules. Headers must be in $kernel_dir or $kernel_dir/build. Modules will be installed in /lib/modules.')
option('machine', type: 'string', value: 'native',
option('kernel_dir', type: 'string', value: '',
description: 'Path to the kernel for building kernel modules. Headers must be in $kernel_dir or $kernel_dir/build. Modules will be installed in /lib/modules.')
option('machine', type: 'string', value: 'native',