iPhone team dev, do we all need the same OS?

I´m just starting iPhone development with a small team of (really young and naive) colleagues, we all are fairly new to OS X, my question is:

If we are planning to develop for every iPod Touch/iPhone out there (not the iPad, I read that thing requires Snow Leopard), what problems will we encounter when sharing code (and making commits) if we all have a combination of开发者_如何学JAVA Leopard and Snow Leopard systems?

You should be OK as long as you're not using the iPhone SDK version 3.2, which requires Snow Leopard, as you already know. You'll be using Xcode 3.1.4 on Leopard and Xcode 3.2.1 on Snow Leopard. One caveat: ensure that you save your project as compatible with Xcode 3.1 (which is the default) and don't change its compatibility level to 3.2 unless everyone is on Snow Leopard.

Xcode's distributed build system (when it works) will only distribute to the same OS (version). So if you really use distributed builds, you'd see a gain from all being on the same OS.