Just upgraded to Snow Leopard, installed Xcode 3.2, then installed iPhone SDK 3 for SL.
In a project, I now get the following error on build:
I had the same issue in a Fortran Makefile. Added the following option after the compiler (For OSX 10.5):
-L/Developer/SDKs/MacOSX10.5.sdk/usr/lib
e.g.,
g77 -L/Developer/SDKs/MacOSX10.5.sdk/usr/lib
Now the compiler will find the library you want !