Logged In: YES 
user_id=1266029

I am going to upload a revision of my patch that addresses 
jackjansen's comment: It sets CXX to g++ or c++ if CC is gcc or 
cc, respectively. Additionally, it writes a warning if configure had to 
"guess" the C++ compiler and tells the user how to override this 
guess. 
 
The change is in lin with jackjansen's second suggestion. It is 
pretty straight forward and avoids fragile configure magic.