Hi Joseph, > Could you advise? Odd. You have GCC 3.3 and GCC 3.4.6 installed. Which one is referred to by the 'gcc' command line command? Does it work? Can you create a runnable executable with it? GCC installation instructions: http://gcc.gnu.org/install/ Also, did you run ./configure, or did you follow the GCC configure instructions <http://gcc.gnu.org/install/configure.html> and build in a different directory than than the GCC source code? Building GCC in the source directory, or any subdirectory thereof, is not supported. You didn't supply that information, and it is one of the things that trips people up sometimes, so I thought I'd ask. This is a gcc-help@xxxxxxxxxxx question, not a gcc@xxxxxxxxxxx question. I've removed gcc@xxxxxxxxxxx from the response list. HTH, --Eljay