c++ - Find the source of error in qmake-files -


I am new to QMac. I need some Windows / QT based software port. I have a big experience with SIMKK, And when I see many files, which are included in many other QMake files in this project, I am very confused, as far as I know it is normal for QMake. Anyway, I have created an error: 
  mkdir -p mkdir: missing operand   
 Obviously, this would be some empty variable command in qmake files is. But the search in the project provides "MKDIR" in many places.  
 My question is, there is no way to find out that  *. Pro ,  *. Primary  (or any other qmake-file) is the source of the build error?   
 
 
 You can add prudent probes like:  
  isEmpty (Variable) {message (variable is empty)}

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