There is a change in policy that builds should prefer @rpath directives to find internal dependencies. Here is the error message

CMake Error at build/_deps/mongo-c-driver-src/src/libbson/CMakeLists.txt:37 (cmake_policy):

  Policy CMP0042 may not be set to OLD behavior because this version of CMake

  no longer supports it.  The policy was introduced in CMake version 3.0.0,

  and use of NEW behavior is now required.

  Please either update your CMakeLists.txt files to conform to the new

  behavior or use an older version of CMake that still supports the old

  behavior.  Run cmake --help-policy CMP0042 for more information.