Hello, I am trying to use the gcc version 4.0.1 that came installed on my PowerBook G4, powerpc-darwin machine to install some software from source code (the software is the ROOT data analysis program, from www.root.cern.ch). When I try to run the "make" command in the directory created by downloading the ROOT software via cvs, I receive an error because it appears that there is a problem with the "string" header file. The code I am trying to compile thinks string is part of the std, and gcc seems to disagree. Some output from this error is printed at the end of this message. I'm sorry if this is a novice question. I only interact with gcc to the extent that it is necessary for me to install applications for research. I have asked some of my colleagues about this problem, but none of them experienced it when installing the ROOT software. Please let me know if there is any information that would be useful in diagnosing this problem. Thank you very much, Adrian Down