Index: trunk/zoo-project/zoo-services/qrencode/Makefile
===================================================================
--- trunk/zoo-project/zoo-services/qrencode/Makefile	(revision 385)
+++ trunk/zoo-project/zoo-services/qrencode/Makefile	(revision 471)
@@ -5,5 +5,5 @@
 
 cgi-env/qrencode.zo: qrenc-service.c
-	g++ -DZOO_SERVICE_PROVIDER ${CFLAGS} -shared -fpic -o cgi-env/qrencode.zo ./qrenc-service.c -lqrencode ${GDAL_LIBS} ${MACOS_LD_FLAGS}
+	g++ -DZOO_SERVICE_PROVIDER ${CFLAGS} -shared -fpic -o cgi-env/qrencode.zo ./qrenc-service.c -lqrencode ${GDAL_LIBS} -lpng ${MACOS_LD_FLAGS}
 
 clean: