Cocos2d-x v3.3 external prebuilt lib 64bit

I think they are defined by compiling tools.

Cocos / physics is causing errors due to source changes in chipmunk.
Are you sure this external library is compatible with cocos2dx v3.3?
I wonder if it is possible to modify the source to suit this external library.

No, i didn’t say the external libraries are compatible with 3.3. You can check the chipmunk version used in 3.3 and build 64 bit using https://github.com/cocos2d/cocos2d-x-3rd-party-libs-src.