This looks good to me, but echristo should at least confirm that the autoconf bits make sense as I know nothing about autoconf. ================ Comment at: cmake/config-ix.cmake:275 @@ -275,2 +274,3 @@ llvm_find_program(Graphviz) +llvm_find_program(xdot xdot.py) ---------------- Why reorder this? http://llvm-reviews.chandlerc.com/D715