Question

I am trying to include Google+ api and foursquare api in my ios app. When compiling it shows lexical or preprocessor issue caused because both are using #define DEBUG statement that is conflicting while compiling.

Answer 1

From your question I am not sure, but I can sense, some code part is missing…

So you can try this one:

Comment or remove those lines and compile again.

Or It can be converted to

#ifdef DEBUG
  NSLog(@"log");
#endif

EDIT:

As you changed your question, now it is clear what is the error.

Remove one #define DEBUG from either of the file.