Add preprocessor macro to a target in xcode 6

问题

Probably this is pretty simple, but I can\'t find a way to define a preprocessor macro for a target in Xcode 6.

回答1:

I've done a screenshot to show where it is in Xcode, because it's easier :)

1. Select project file
2. Select the target you want
3. Go to Build Settings
4. Search for 'preprocessor'
5. Add your preprocessor macro either for Debug, Release, or both.

回答2:

In Xcode 9 you have to add a preprocessor macros to Project, not Target. Also don't forget to add "D" as the firs letter. For example, "DDebug", then it works.

来源：https://stackoverflow.com/questions/26928622/add-preprocessor-macro-to-a-target-in-xcode-6