Required Library Versions?

Hi internals, I'm working on making a tool to build arbitrary combinations of PHP and extensions for testing purposes. At the moment, it's hard to test specific combinations (e.g. a specific version of cURL with a specific version of OpenSSL) to reproduce environment bugs. Along those lines, I'd like to know if there's a list of per-version requirements to build the bundled extensions (those in ext/). Failing that, is there a list of what each Windows binary was built with? Thanks, -- Ryan McCue <http://ryanmccue.info/>