option('openssl_force_subproject', type: 'boolean',
  value: false,
  description: '''If set, force the build to use the subproject version of
OpenSSL''',
)
option('openssl_no_deprecated', type: 'boolean',
  value: true,
  description: '''Force OpenSSL to only expose non-deprecated APIs. This is
usually the best choice.''',
)