option('examples', type: 'boolean', value: false, description: 'Build examples')
option('tight-encoding', type: 'feature', value: 'auto', description: 'Enable Tight encoding')
option('tls', type: 'feature', value: 'auto', description: 'Enable encryption & authentication')
option('x86_64-simd', type: 'string', value: 'sse2',
       description: 'Choose SIMD extension for x86_64 release build')