Need help Installing GTest on Mac OS Catalina

Having issues installing GTest on my Mac OS Catalina. I keep getting the following error messages when trying to install and compile GTest I'm also trying to use it in ATOM or some IDE, but I am not sure how to set those up as well. Could use some help or recommendations as to IDE used for Mac.

I get the following errors

Terminal Error

fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 errors generated. make[2]: *** [googletest/CMakeFiles/gtest.dir/src/gtest-all.cc.o] Error 1 make[1]: *** [googletest/CMakeFiles/gtest.dir/all] Error 2 make: *** [all] Error 2