requires bison

graphviz/graphviz.spec

@@ -42,7 +42,7 @@ Patch0:       graphviz.patch
 #   build information
 Prefix:       %{l_prefix}
 BuildRoot:    %{l_buildroot}
-BuildPreReq:  OpenPKG, openpkg >= 20020206, freetype, png, jpeg, gcc, make, flex
+BuildPreReq:  OpenPKG, openpkg >= 20020206, freetype, png, jpeg, gcc, make, flex, bison
 PreReq:       OpenPKG, openpkg >= 20020206, freetype, png, jpeg
 AutoReq:      no
 AutoReqProv:  no