From 8bccd2d988ba0f70bb6f50408f59cc777060d750 Mon Sep 17 00:00:00 2001
From: Tim 'mithro' Ansell <mithro@mithis.com>
Date: Fri, 16 Dec 2016 18:02:28 +0100
Subject: [PATCH] bios: Include dependency rebuild info.

---
 litex/soc/software/bios/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/litex/soc/software/bios/Makefile b/litex/soc/software/bios/Makefile
index 114851472..e00e4a706 100644
--- a/litex/soc/software/bios/Makefile
+++ b/litex/soc/software/bios/Makefile
@@ -22,8 +22,8 @@ bios.elf: $(BIOS_DIRECTORY)/linker.ld $(OBJECTS)
 		-lnet -lbase-nofloat -lcompiler_rt
 	chmod -x $@
 
-main.o: $(BIOS_DIRECTORY)/main.c
-	$(compile)
+# pull in dependency info for *existing* .o files
+-include $(OBJECTS:.o=.d)
 
 %.o: $(BIOS_DIRECTORY)/%.c
 	$(compile)