+AC_PATH_PROG(GRAPHVIZ, [Graphviz], [echo Graphviz])
+if test "$GRAPHVIZ" != "echo Graphviz" ; then
+ AC_DEFINE([HAVE_GRAPHVIZ],[1],[Define if the Graphviz program is available])
+ AC_DEFINE_UNQUOTED([LLVM_PATH_GRAPHVIZ],"$GRAPHVIZ",
+ [Define to path to Graphviz program if found or 'echo Graphviz' otherwise])
+fi
+AC_PATH_PROG(GV, [gv], [echo gv])
+if test "$GRAPHVIZ" != "echo gv" ; then
+ AC_DEFINE([HAVE_GV],[1],[Define if the gv program is available])
+ AC_DEFINE_UNQUOTED([LLVM_PATH_GV],"$GV",
+ [Define to path to gv program if found or 'echo gv' otherwise])
+fi