Many thanks anda_skoa, with your guidance and rereading the qmake documentation now if I have managed to understand how the compilation process works for an end application.

In effect with

Qt Code: 
  1. DESTDIR = ../path/where/we/want/our/library/or/binary/
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Now everything is where I want.

I hope this post will serve to anyone who has the same doubt as me.

Thank you again, theme solved.

I do not know how to put it solved in the title