QtApp for android: How to auto-increment version using ant's build.xml ?

[Nelson_Piquet]

In my QtApp which builds fine for android, I need to auto-increment the versionCode of my app with every build using ant as described in below example.
http://stackoverflow.com/questions/1431315/build-numbers-major-minor-revision

I am doing the build command line using the following command:
androiddeployqt --sign mykey.keystore myAlias --storepass myPassword --output android --verbose --input android-libMyQtApp.so-deployment-settings.json

How can introduce my own build.xml into my QtApp & do process described in link above ?

[benlau]

I would just use this script to increase the versionCode in AndroidManifest.xml directly.

Usage:
https://github.com/benlau/qtci#5-binincrease-android-version-code

Script:
https://github.com/benlau/qtci/blob/master/bin/increase-android-version-code