If you want to write an extension for PHP5, use PECL_Gen and read the documentation – it makes writting extensions much easier.
Tag pecl
Binary PECL Packages
Thomas V.V. Cox proposed some ideas on how binary PECL packages could be handled. [1]
[1] http://marc.theaimsgroup.com/?l=pear-dev&m=105597852111697&w=2
Sandro Groganz 