diff -r b99b41325d89 -r 50677f43ac3d make/gensrc/GensrcBuffer.gmk
--- a/make/gensrc/GensrcBuffer.gmk	Tue Jan 01 20:09:02 2019 -0500
+++ b/make/gensrc/GensrcBuffer.gmk	Wed Jan 02 12:59:26 2019 +0100
@@ -230,7 +230,8 @@
   endif
 
   $$($1_DST): $$($1_DEP) $(GENSRC_BUFFER_DST)/_the.buffer.dir
-	$(TOOL_SPP) < $$($1_SRC) > $$($1_OUT).tmp \
+	$(RM) $$($1_OUT).tmp
+	$(TOOL_SPP) -i$$($1_SRC) -o$$($1_OUT).tmp \
 	    -K$$($1_type) \
 	    -K$$($1_category) \
 	    -K$$($1_streams) \
@@ -260,12 +261,12 @@
         ifeq ($$($1_BIN), 1)
 	  $(SED) -e '/#BIN/,$$$$d' < $$($1_OUT) > $$($1_DST).tmp
 	  $(RM) $$($1_OUT)
-	  $$($1_char_CMD) < $$($1_SRC_BIN) >> $$($1_DST).tmp
-	  $$($1_short_CMD) < $$($1_SRC_BIN) >> $$($1_DST).tmp
-	  $$($1_int_CMD) < $$($1_SRC_BIN) >> $$($1_DST).tmp
-	  $$($1_long_CMD) < $$($1_SRC_BIN) >> $$($1_DST).tmp
-	  $$($1_float_CMD) < $$($1_SRC_BIN) >> $$($1_DST).tmp
-	  $$($1_double_CMD) < $$($1_SRC_BIN) >> $$($1_DST).tmp
+	  $$($1_char_CMD) -i$$($1_SRC_BIN) -o$$($1_DST).tmp
+	  $$($1_short_CMD) -i$$($1_SRC_BIN) -o$$($1_DST).tmp
+	  $$($1_int_CMD) -i$$($1_SRC_BIN) -o$$($1_DST).tmp
+	  $$($1_long_CMD) -i$$($1_SRC_BIN) -o$$($1_DST).tmp
+	  $$($1_float_CMD) -i$$($1_SRC_BIN) -o$$($1_DST).tmp
+	  $$($1_double_CMD) -i$$($1_SRC_BIN) -o$$($1_DST).tmp
 	  $(PRINTF) "}\n" >> $$($1_DST).tmp
 	  mv $$($1_DST).tmp $$($1_DST)
         endif