oops, I clipped a few lines off of the output. The error occurs when I use clang to compile the linked bitcode into a native executable. Build failed -> task in 'opt1' failed (exit status 1): {task 19107152: opt1 opt1.bc -> opt1} ' /opt/local/libexec/llvm-3.1/bin/clang src/opt1.bc -o src/opt1 '