http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51779
--- Comment #2 from Tim Williams <zippy at anl dot gov> 2012-01-07 07:31:46 UTC --- (In reply to comment #1) > What is the complete path for the gcc sources? /Users/zippy/Downloads/gcc-4.6.2/ > What is the complete path for where you tried > to build gcc? /Users/zippy/Downloads/gcc-4.6.2/build2 > What is the configure command line > you used? ../configure --prefix=$HOME/zippy_gcc --enable-checking=release --with-gmp=$HOME/zippy_gcc --with-mpfr=$HOME/zippy_gcc --with-mpc=$HOME/zippy_gcc --program-prefix=zippy- If helpful, I was using instructions from this blog as a guide (almost certainly I am doing/configuring something wrong---no implication that these instructions are wrong or that the blogger is in any way responsible): http://solarianprogrammer.com/2011/12/01/compiling-gcc-4-6-2-on-mac-osx-lion/