Minimum supported XCode version for 3.6.8


What is the minimum supported version of XCode that 3.6.8 requires?

I had no problem installing it on a machine with XCode 8.3, but the last step in the CMake process (running xcodebuild) fails on a machine with XCode 6.2 involving

“access into incomplete type ‘VSTGUI::CBitmap’ ptr->forget ();”

I checked the doxygen docs, but only found a blurb about VS2015 in the Version History section.

Is there a document-file or page in the doxygen docs that lists the minimum supported compliers, OS’s, etc…?