What changes must I make to the .pro file if I want to execute chmod command, execute the output binary file, or do some other operations.
I had a similar problem. I wanted a special tool (versioner) to run over the code every time the Makefile was executed. Here's the solution:
(to be read in the Qmake Manual, Configuring qmake's Environment, Section: Customizing Makefile Output)
Create you own Makefile target. Specify the command etc.
mytarget.target = .buildfile
mytarget.commands = touch $$mytarget.target
QMAKE_EXTRA_TARGETS += mytarget
This way, you have an extra target you can call with make mytarget for example. If you want to tie it together to the actual buildtarget you'll have to add:
POST_TARGETDEPS += mytarget
Hope that helps.
Best regards
D