how to get around with procbuf class

[Lee Heewook]

I am trying to make one of the open source project compiled on linux. This 
source was developed using gcc 2.95.3 and i am using GNU gcc 3.2.2. 

And looks like GNU got rid of the procbuf class ever since they went to 3.x 

versions... 

is there anyway to get around with procbuf in 3.x version? is there 
anything that is like alternative to procbuf.h in version 3.x? Your help 
will be greatly appreciated. Thank you!

Cheers,
Hee