How to determine QtWebkit version from source code

I am trying to find a version of Webkit in QtWebkit. After creating using a user agent, I can find out, but is there any way to find it from the source code. There is a WebKitVersion.h file in qt-everywhere-opensource-src-4.7.2 \ src \ 3rdparty \ webkit \ webcore \ generated

but in the last Qt5 I could see the generate-webkitversion.pl [Source \ Webkit \ scripts] file that reads from /Soure/WebKit/mac/Configurations/Version.xcconfig

what a deterministic way to find a version of webkit