If you want to install files (copy them with make install), the easiest way is to have it like this:

Qt Code: 
  1. mytarget.path = /some/output/path
  2. mytarget.files = input.txt
  3.  
  4. INSTALLS += mytarget
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If you want to just copy them somewhere, you can try:

Qt Code: 
  1. QMAKE_POST_LINK = cp input.txt output.txt
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If you have to link to the libraries, you'll probably stick to QMAKE_PRE_LINK.