From a0de9a0cfbbdc22aed9217111a7ca7b4b116067c Mon Sep 17 00:00:00 2001
From: abejgonzalez <abe.j.gonza@gmail.com>
Date: Thu, 6 May 2021 20:36:28 -0700
Subject: [PATCH] Depend on build_dir

---
 common.mk               | 3 +++
 sims/vcs/Makefile       | 2 +-
 sims/verilator/Makefile | 2 +-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/common.mk b/common.mk
index b876340e..6ab88d7e 100644
--- a/common.mk
+++ b/common.mk
@@ -87,6 +87,9 @@ endif
 #########################################################################################
 # copy over bootrom files
 #########################################################################################
+$(build_dir):
+	mkdir -p $@
+
 $(BOOTROM_TARGETS): $(build_dir)/bootrom.%.img: $(TESTCHIP_RSRCS_DIR)/testchipip/bootrom/bootrom.%.img | $(build_dir)
 	cp -f $< $@
 
diff --git a/sims/vcs/Makefile b/sims/vcs/Makefile
index f0fc90e5..cc4d2317 100644
--- a/sims/vcs/Makefile
+++ b/sims/vcs/Makefile
@@ -38,7 +38,7 @@ SIM_FILE_REQS += \
 	$(ROCKETCHIP_RSRCS_DIR)/vsrc/TestDriver.v
 
 # copy files but ignore *.h files in *.f since vcs has +incdir+$(build_dir)
-$(sim_files): $(SIM_FILE_REQS)
+$(sim_files): $(SIM_FILE_REQS) | $(build_dir)
 	mkdir -p $(dir $(sim_files))
 	cp -f $^ $(build_dir)
 	$(foreach file,\
diff --git a/sims/verilator/Makefile b/sims/verilator/Makefile
index 00c0f1bb..6510090e 100644
--- a/sims/verilator/Makefile
+++ b/sims/verilator/Makefile
@@ -63,7 +63,7 @@ SIM_FILE_REQS += \
 	$(ROCKETCHIP_RSRCS_DIR)/csrc/remote_bitbang.cc
 
 # copy files and add -FI for *.h files in *.f
-$(sim_files): $(SIM_FILE_REQS)
+$(sim_files): $(SIM_FILE_REQS) | $(build_dir)
 	mkdir -p $(dir $(sim_files))
 	cp -f $^ $(build_dir)
 	$(foreach file,\