How to make my Cocoa application targeting Intel based Mac and old PPC system?

I am in the process of creating an application that run on Intel based mac. But subsequently, I also want to make it able to run in Power PC based system.

Can Xcode 4 accomplish开发者_StackOverflowed this? Thanks in advance!

---

I believe PowerPC support (Rosetta) has been completely removed for Xcode 4. You can download an older version of Xcode here: http://connect.apple.com

---

I got an answer from SO article : How can we restore ppc/ppc64 as well as full 10.4/10.5 SDK support to Xcode 4? And in the proces of creating a universal binary for both... I hope it's okay