Add -f to rm so that cleaning twice doesn't error.

diff --git a/Makefile b/Makefile
index 38e4a74..53c72f6 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -21,4 +21,4 @@ led_blink.bin: led_blink
 
 .PHONY: clean
 clean:
-       rm led_blink led_blink.bin *.o
+       rm -f led_blink led_blink.bin *.o