From 28ab1d592b094789882543d2ca99c868716d6539 Mon Sep 17 00:00:00 2001
From: Michael Hamburg <mike@shiftleft.org>
Date: Thu, 7 Jan 2016 16:54:39 -0800
Subject: [PATCH] prevent regenerating all headers every make

---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 8b71c25..a22f8b3 100644
--- a/Makefile
+++ b/Makefile
@@ -128,9 +128,9 @@ $(BUILD_OBJ)/timestamp:
 $(BUILD_OBJ)/%.o: $(BUILD_ASM)/%.s
 	$(ASM) $(ASFLAGS) -c -o $@ $<
 
-$(GEN_HEADERS): gen_headers
+gen_headers: $(GEN_HEADERS)
 	
-gen_headers: src/gen_headers/*.py
+$(GEN_HEADERS): src/gen_headers/*.py
 	python -B src/gen_headers/main.py --hpre=$(BUILD_INC) --cpre=$(BUILD_C)
 
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