Question

Are the .pro file settings somehow accessible from within the code?

I want to use conditional compilation but I need to know whether
testlib (or whatever)

QT += testlib

is added in the project file.

thanks in advance

Answer 1

Yes. If your application is compiled with the testlib, QT_TESTLIB_LIB will be defined.

So you could to this:

#ifdef QT_TESTLIB_LIB
// test code
#endif