I have another problem for O2 building. It looks like every time my O2 successfully builds and I make a change to it and run aliBuild build O2 --defaults o2, it will skip building O2. But if O2 does not build and I make a change to it, it will recognize my change and go ahead to rebuild. I am not sure why this happens. I guess there may be a better way to force O2 to rebuild?
Also, can O2 be built easily? Let’s say I only want to build the Detector/ITSSMFT/ITS part, do I always need to go through the entire build process of the whole O2 software? Thank you very much