From 22058020f44abbb55e4146f288da4d8dc0a98dc0 Mon Sep 17 00:00:00 2001
From: yenatch <yenatch@gmail.com>
Date: Sun, 28 May 2017 01:22:17 -0400
Subject: [PATCH] Fix intermediate files once and for all.

GNU Make defaults to deleting all intermediate files unless .SECONDARY is defined.
---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 89991b22e..6f4a48ad4 100644
--- a/Makefile
+++ b/Makefile
@@ -3,8 +3,8 @@ MD5 := md5sum -c --quiet
 .SUFFIXES:
 .PHONY: all clean tools crystal crystal11
 .SECONDEXPANSION:
-.PRECIOUS: %.2bpp %.1bpp %.pal.bin
-
+.PRECIOUS:
+.SECONDARY:
 
 
 crystal_obj := \