Upgrading to xcode 4 error No architectures to compile for

Question

I am getting an error after upgrading to xcode 4, for all of the library projects that my application depends on.

[BEROR]No architectures to compile f

Answer 1

Very strange. I encountered the same error and both the Debug and Release "Valid Architectures" were set to armv6 and armv7. (The same code compiles fine in Xcode 3.2.) I ended up deleting both settings, then expressly setting them to $(ARCHS_STANDARD_32_BIT) ... which in turn translates to armv6 and armv7 again ... and it compiles just fine now. No i386 needed. Hmm ...