# ZXINGCPP_CFLAGS includes the thirdparty zxingcpp, which leads to both the
# system and thirdparty zxingcpp being included when opting to use the system
# zxingcpp.
# https://bugs.ghostscript.com/show_bug.cgi?id=708683
--- a/Makefile
+++ b/Makefile
@@ -155,7 +155,7 @@ $(OUT)/source/fitz/leptonica-wrap.o : source/fitz/leptonica-wrap.c
 endif
 
 $(OUT)/source/fitz/barcode.o : source/fitz/barcode.cpp
-	$(CXX_CMD) $(WARNING_CFLAGS) $(LIB_CFLAGS) $(THIRD_CFLAGS) $(ZXINGCPP_CFLAGS) $(ZXINGCPP_LANGFLAGS)
+	$(CXX_CMD) $(WARNING_CFLAGS) $(LIB_CFLAGS) $(THIRD_CFLAGS) $(ZXINGCPP_LANGFLAGS)
 
 $(OUT)/platform/%.o : platform/%.c
 	$(CC_CMD) $(WARNING_CFLAGS)