+INSTALLATION OF EVENT PECL EXTENSION
+Tested under GNU/Linux only. But likely will work on others too. The following
+also concerns GNU/Linux. If you find it useful to publish instructions for
+other platforms, please drop me a note.
+Event extension supports `libevent 2.0` or greater. It expects at least
+<libevent_core.so> library to be installed. For extra functions
+<libevent_extra.so>) is required. However, since `libevent 2.0` both should
+come with the libevent distribution.
+Note that <libevent.so> exists for historical reasons. Currently it contains
+the contents of both <libevent_core.so> and <libevent_extra.so>. But using
+<libevent.so> is not reliable as it may go away in future releases.
+Most OS distributions have `libevent` package in their repositories:
+*Debian*, *Ubuntu* and similar:
+ # apt-get install libevent-dev
+ # emerge dev-libs/libevent
+ (`ssl` USE-flag may be needed)
+In a pinch the source code is always available on `libevent`'s homepage:
+Just run the following as `root`:
+ # pecl install package.xml
+Clone the project or download it as archive. In the package directory run:
+ $ ./configure --with-event-core --with-event-extra --enable-event-debug
+In <php.ini>, or some other configuration like