Libint max angular momentum error

On the latest clone I tried:

cmake -H. -DLIBINT_OPT_AM=11 …

and got:

CMake Warning:
Manually-specified variables were not used by the project:
LIBINT_OPT_AM

I also looked for the “setup” file so that I could do it the other way, but couldn’t find the setup file.
What should I do?