I was installing Browsertime on CentOS 7 and encountered this error. Well, this could happen with any package which uses g++ library. To fix this error, all you got to do is install development tools with yum as below command. Try to install what you were installing. It worked for me, and I hope for you too.

make g Command not found on CentOS RHEL 7 FIXED - 23make g Command not found on CentOS RHEL 7 FIXED - 16make g Command not found on CentOS RHEL 7 FIXED - 83make g Command not found on CentOS RHEL 7 FIXED - 42make g Command not found on CentOS RHEL 7 FIXED - 81make g Command not found on CentOS RHEL 7 FIXED - 63make g Command not found on CentOS RHEL 7 FIXED - 10make g Command not found on CentOS RHEL 7 FIXED - 89make g Command not found on CentOS RHEL 7 FIXED - 78make g Command not found on CentOS RHEL 7 FIXED - 98make g Command not found on CentOS RHEL 7 FIXED - 99make g Command not found on CentOS RHEL 7 FIXED - 32make g Command not found on CentOS RHEL 7 FIXED - 51make g Command not found on CentOS RHEL 7 FIXED - 52make g Command not found on CentOS RHEL 7 FIXED - 14make g Command not found on CentOS RHEL 7 FIXED - 90make g Command not found on CentOS RHEL 7 FIXED - 77make g Command not found on CentOS RHEL 7 FIXED - 11make g Command not found on CentOS RHEL 7 FIXED - 52make g Command not found on CentOS RHEL 7 FIXED - 22make g Command not found on CentOS RHEL 7 FIXED - 93make g Command not found on CentOS RHEL 7 FIXED - 65make g Command not found on CentOS RHEL 7 FIXED - 78