Qt. How to include your own static libraries under Linux?

Question

linux

I wrote a Linux project using Eclipse C++. Finally decided to switch to Qt Creator.
I created projects for my static libraries, everything compiles great.
Now I am creating an application. They connect libraries, but nothing gives an error "undefined reference ..."
What could be wrong?

Answer 1

#path/to/libdir/libmylib.a
LIBS *= -Lpath/to/libdir -lmylib

Answer 2

ldd will help you see which libraries are declared and not found