fix diffimg test code

diff --git a/contrib/diffimg/Makefile.am b/contrib/diffimg/Makefile.am
index 213b179d803d1a712d1af1622d96376bf1cef43b..02b1c044e4bcf022dc7326d073eb386cc3370160 100644 (file)
--- a/contrib/diffimg/Makefile.am
+++ b/contrib/diffimg/Makefile.am
@@ -24,10 +24,10 @@ diffimg.1.pdf: $(srcdir)/diffimg.1
 GRAPH = "digraph G { hello -> world }"
 
 test: diffimg
-       echo $(GRAPH) | dot -Tpng:cg >hello1.png
-       echo $(GRAPH) | dot -Tpng:cg >hello2.png
+       echo $(GRAPH) | dot -Tpng >hello1.png
+       echo $(GRAPH) | dot -Tpng >hello2.png
        if `./diffimg hello1.png hello2.png >test1.png`;then echo same;else echo different;fi
-       echo $(GRAPH) | dot -Grankdir=LR -Tpng:cg >hello2.png
+       echo $(GRAPH) | dot -Grankdir=LR -Tpng >hello2.png
        if `./diffimg hello1.png hello2.png >test2.png`;then echo same;else echo different;fi
 
 CLEANFILES = *.png