libsasl2-dev 2.1.27~101-g0780600+dfsg-3ubuntu2 (amd64 binary) in ubuntu bionic

 This is the Cyrus SASL API implementation, version 2. See package
 libsasl2-2 and RFC 2222 for more information.
 .
 This package includes development files for compiling programs with SASL
 support. It is needed for development purposes only.