"How freeradius compile with g++"

Hello, Does anyone know how I could compile freeradius in C++ using g++ instead of gcc ? I am not very familiar with the underlying configure mechanism , all i know is to type 'configure' an then 'make' ... I would make chane in Make.inc file where CC= g++ insted of CC= gcc then i got so many error like in radiusd.h file , there r operator is declare as variable , but it is key word in g++? so how can i make freeradius with g++? thanks manoj + 91 - 9881403519