+ graphviz_ok=no
+fi
+dnl AC_SUBST(DOT)
+
+AC_PATH_PROG(LATEX,latex)
+if test "x$LATEX" = "x" ; then
+ AC_MSG_WARN(latex not found)
+fi
+AC_SUBST(LATEX)
+
+AC_PATH_PROG(DVIPS,dvips)
+if test "x$DVIPS" = "x" ; then
+ AC_MSG_WARN(dvips not found)
+fi
+AC_SUBST(DVIPS)
+
+AC_PATH_PROG(PDFLATEX,pdflatex)
+if test "x$PDFLATEX" = "x" ; then
+ AC_MSG_WARN(pdflatex not found)