How to install mxj

A beginner's problem:
- I have a patch that uses mxj.
- My Max installation (macOS) does not have mxj.
- So I went on mxj github downloaded it and compiled according to the instructions.
- Since instructions are not informative on how to install mxj into Max, what I did - is just copied the whole folder into `/Applications/Max.app/Contents/Resources/C74/packages/max-mxj` path.
- When I start Max, I get the following errors in the Max Console:

mxj_safe: unable to load object bundle executable
2018-04-27 15:51:00.860 Max[46195:9947329] Error loading /Applications/Max.app/Contents/Resources/C74/packages/max-mxj/extensions/mxj_safe.mxo/Contents/MacOS/mxj_safe: dlopen(/Applications/Max.app/Contents/Resources/C74/packages/max-mxj/extensions/mxj_sa
fe.mxo/Contents/MacOS/mxj_safe, 262): Symbol not found: _jpatcher_error_obtrusive
Referenced from: /Applications/Max.app/Contents/Resources/C74/packages/max-mxj/extensions/mxj_safe.mxo/Contents/MacOS/mxj_safe
Expected in: flat namespace
in /Applications/Max.app/Contents/Resources/C74/packages/max-mxj/extensions/mxj_safe.mxo/Contents/MacOS/mxj_safe

- Apparently, I'm missing some step. But I can't find precise information on how it should be done.
- Googling for `jpatcher_error_obtrusive` doesn't give meaningful results either.

Looking for advice on how to resolve this.
Thanks!