Question

my application builds fine when i run it and unit tests built fine as well

unit tests failed(application still fine) when i added some code for CGAffineTransform

behaviour is the same for both simulator and device

error message:

Undefined symbols for architecture i386:
  "_CGAffineTransformMakeTranslation", referenced from:
      -[PhysicsObject hasPoint:] in PhysicsObject-23B4A02B8F0621AD.o
  "_CGAffineTransformMakeRotation", referenced from:
      -[PhysicsObject hasPoint:] in PhysicsObject-23B4A02B8F0621AD.o
  "_CGAffineTransformConcat", referenced from:
      -[PhysicsObject hasPoint:] in PhysicsObject-23B4A02B8F0621AD.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I have tried suggestions from

http://twobitlabs.com/2011/06/adding-ocunit-to-an-existing-ios-project-with-xcode-4/
http://sealedabstract.com/code/tired-of-getting-mach-o-linker-errors-when-unit-testing/
Apple Mach-O Linker Error when compiling for device

and nothing works 🙁 i suspect this is related to a framework in particular not being found. I cant seem to identify which though. help is much appreciated.

Answer 1

Prefix _CG is CoreGraphics.framework