I've used this plugin before and it's great. But the developers of the PHP SDK for Azure are hallucinating. The install documentation is insufficient. The plugin documentation and messaging is also very sparse.
I was able to get PEAR installed and get the base SDK installed. I'm lost as to the "four steps" that it requires.
It says to use a runonce in the autoloader script, but no context is given. I have no idea what script it is referring to and suspect this is stuff that should be done in the PHP code that calls it.
I really dislike manual code installs because they are difficult to keep up to date over time. My first preference is an Ubuntu package (easy to maintain and live with), but I can handle a PEAR package.