/ Un*x: Get a .tar.gz,
unpack, phpize, configure and make (last time I tried that didn't work for
me, must've been some wrong auto-whatever).
If the release is done correctly, a simple pecl install sybase works.
This is an important point because unfortunately in the past a "moved to PECL" was theoretical. Instead, if it meant the moved extension could be found at pecl.php.net/extname, have its own bug category, and be installable via the pecl command... the word "PECL" would be a lot less scary. And it's worth noting that Pierre will release the extensions mentioned in this thread so they won't be hidden in the pecl CVS module.
And on a related note, have we considered any sort of fetch integration with configure? You know, like --with-apc would grab it much like 'pecl download apc' does today. Or more likely a trigger, like --with-apc=fetch,beta ... you get the idea. A friendlier this[1].
Regards,
Philip
[1]
http://php.net/install.pecl.static