I'm a developer for a cross platform (Win, MacOS, Linux) open source C++ application. I would like to have the program occasionally check for the latest version from our web site.

Between the security, privacy, and cross platform network issues, I'd rather not roll our own solution. It seems like this is a common enough thing that there 'ought' to be a library/app which will do this. Unfortunately, the searches I've tried come up empty.

Ideally, the web app would track requests and process the logs into some nice reports (number of users, what version, what platform, frequency of use, maybe even geographical info from IP address, etc.). While appropriately respecting privacy, etc.

What pre-existing tools can help solve this problem?

Edits:

I am looking for a reporting tool, not a dependency checker.

Our project has the challenge of keeping up with our users. Most do not join the mailing list. Our project has not been picked up by major distributions -- most of our users are Windows/MacOS anyway. When a new version comes out, we have no way of informing our users of its existence. Development is moving pretty fast, major features added every few months.

We would like to provide the user with a way to check for an updated version. While we're at it, we would like to use these requests for some simple & anonymous usage tracking (X users running version Y with Z frequency, etc.).

We do not need/want something that auto-updates or tracks dependencies on the system. We are not currently worried about update size -- when the user chooses to update, we expect them to download the complete latest version. We would like to keep this as simple as possible.