From 51b9b47e2d0299c5fcca8f08ea059208e82a5fe2 Mon Sep 17 00:00:00 2001
From: yenatch <yenatch@gmail.com>
Date: Tue, 23 Jan 2018 00:36:44 -0500
Subject: fix unhelpful errors when missing prerequisites in implcit rules

---
 Makefile | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index cd11913f..ede34e04 100644
--- a/Makefile
+++ b/Makefile
@@ -33,12 +33,16 @@ compare: pokegold.gbc pokesilver.gbc
 
 %.asm: ;
 
-%_gold.o: dep = $(shell $(includes) $(@D)/$*.asm)
-%_gold.o: %.asm $$(dep)
+define DEP
+$1: $$(shell $$(includes) $2)
+endef
+$(foreach obj, $(gold_obj), $(eval $(call DEP,$(obj),$(obj:_gold.o=.asm))))
+$(foreach obj, $(silver_obj), $(eval $(call DEP,$(obj),$(obj:_silver.o=.asm))))
+
+$(gold_obj): %_gold.o: %.asm $$(dep)
 	rgbasm -D GOLD -o $@ $<
 
-%_silver.o: dep = $(shell $(includes) $(@D)/$*.asm)
-%_silver.o: %.asm $$(dep)
+$(silver_obj): %_silver.o: %.asm $$(dep)
 	rgbasm -D SILVER -o $@ $<
 
 pokegold.gbc: $(gold_obj)
-- 
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