libircclient1 binary package in Ubuntu Precise amd64

 libircclient is a small but powerful library that implements the
 client-server IRC protocol. It is designed to be small, fast, portable and
 compatible to RFC standards, and most IRC clients. libircclient features
 include:
 .
  * Full multi-threading support.
  * Single threads handles all the IRC processing.
  * Support for single-threaded applications, and socket-based applications,
    which use select()
  * Synchronous and asynchronous interfaces.
  * CTCP support with optional build-in reply code.
  * Flexible DCC support, including both DCC chat, and DCC file transfer.
  * Can both initiate and react to initiated DCC.
  * Can accept or decline DCC sessions asynchronously.
  * Plain C interface and implementation (possible to use from C++ code,
    obviously)
  * Compatible with RFC 1459 and most IRC clients.
  * Good documentation and examples available.

Source package