From 27bb02398961a2e09d77c64fa46b39a9d363613d Mon Sep 17 00:00:00 2001
From: Fergus Noble <fergusnoble@gmail.com>
Date: Thu, 3 Apr 2014 02:09:27 -0700
Subject: [PATCH] Only build locm3 if .a file doesn't exist

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 66c90586..87ac6d22 100644
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,7 @@ tests:
 		fi; \
 	done
 
-libopencm3/lib/libopencm3_stm32f4.a: .FORCE
+libopencm3/lib/libopencm3_stm32f4.a:
 	@printf "BUILD   libopencm3\n"; \
 	$(MAKE) -C libopencm3 $(MAKEFLAGS) lib/stm32/f4