libevent-dev 1.4.13-stable-1 (armel binary) in ubuntu oneiric

 Contains the header files, documentation, examples and static libraries
 for use in developing applications that use the libevent library.
 .
 The libevent library is an asynchronous event notification library
 that provides a mechanish to execute a callback function when a specific
 event occurs on a file descriptor or after a timeout has been reached.