I have installed the gcc4.2.2 on my system,with the defaut install steps:
tar ...
cd /tmp/Download/gcc-4.2.2
./configure
make
make install

ok,no problem,after than run g++ -v, show my g++ version is 4.2.2
while compile a simple hello world program with no error,but run the problem ./a.out, it print the fellowing information:

[root@chbq test]# ./a.out
./a.out: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

[root@chbq test]# whereis libstdc++.so.6
libstdc++.so: /usr/lib/libstdc++.so.5 /usr/local/lib/libstdc++.so.6 /usr/local/lib/libstdc++.so

I found libstdc++.so.6 is installed,but I don't know set libstdc++.so.6 as my default link,can you give me some advise? thank you !

that should do it.

by the way,
upgrade to Fedora 8, its high time.

I have copy the file to that directory, and copy another file libgcc_s.so.1 to the /lib,run the program without problem, I don't make sure this is a right way for this problem, I don't found other problem just now.thank you

AFAIK there's no such thing as RH 9.3... maybe he meant 7.3?

I appreciate your help........ coz I have the same problem, I'm so thankful that I found this topic