If your logs look something like this error: use of undeclared identifier 'RUBY_FUNCTION_NAME_STRING'
, command line tools are out of date.
Now if your command line tools are up to date and you are getting an error like this:
./openssl_missing.h:195:11: warning: 'TS_VERIFY_CTS_set_certs' macro redefined [-Wmacro-redefined]
Run the install pointing to your brew installation of openssl: