Apple Mach-O linker (id) warning : building for MacOSX, but linking against dylib built for iOS

Question

Starting from some point in the past xCode 4 in complaining about linker problems:

ld: warning: building for MacOSX, but linking against dylib built f

Answer 1

Check your Framework Search Paths for your Main target and your test Target.

I had a lot of crap in mine.

had old project written in XCode 4 and just started to use Unit Tests in XCode 5.

Here's the minimum I have to get my test project to run

Project Navigator > click on project at top >
Targets > Build Settings > Framework Search Paths

---

TARGET:my_project
$(inherited)
"$(SRCROOT)"
"$(SRCROOT)/my_project"

TEST:my_projectTests
"$(SDKROOT)/Developer/Library/Frameworks"    <

Note: If you drag a framework into XCode. XCode 5 has bad habit of hardcoding the path

/Users/gbxc/Documents/my_project

should be

"$(SRCROOT)"                             << Documents/my_project
"$(SRCROOT)/my_project"                  << Documents/my_project/my_project

so if you moved your project might get problems

Best way to check whats correct is to create a new single view project that runs tests ok.

Run the Test action
By default it fails but at least testing is running
then compare the  Framework Search Paths.