Hi Brett, Where did you install the prerequisite tools & packages? e.g. /Users/brett/bin as per... <http://gcc.gnu.org/install/> Step 1. Prerequisites What was the location of your source directory? e.g. /Users/brett/gcc-4.3.1-src What was the location of your build directory? e.g. /Users/brett/gcc-build What was your configure line? e.g. cd /Users/brett/gcc-build /Users/brett/gcc-4.3.1-src/configure What was the output of "make -k check"? Or did it just stop, without any output? Thanks, --Eljay