Script from QMAKE_SUBSTITUTES with execute permissions

[Sebastian Mosiej]

Hi,
I'm using QMAKE_SUBSTITUTES to create script with paths to dependent libraries.
Script is created, but after substitution it's permissions are 644.
How can I change them to ie. 0755?
Can I do it during install phase?

PS: From qt src I see that QMAKE_SUBSTITUTES simply open and write to file.
I found this a viable solution

unix: system("chmod a+x $$shadowed($$PWD)/script.sh")