I was following along and reading "Application Development with QT Creator" chapter 2 making a static lib math function and I just can't make it work. Having for one path issues where the "\.." notation in the PRO file confuses the build and when I try to build the lib I get a popup that says "Executable not found". In anycase the 'lib' files are created anyhow even though I copy them into my test console application the header files are not found. So if anyone can detail a working example I would appreciate it.