From 72d41c8d5e93e300f9e65e8752ae765428c96c83 Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Mon, 20 May 2024 10:16:11 -0600
Subject: mk/verilator: add cpp sources as make dependencies of Vtop

---
 mk/verilator.mk | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mk/verilator.mk b/mk/verilator.mk
index 805199b..7998d27 100644
--- a/mk/verilator.mk
+++ b/mk/verilator.mk
@@ -81,11 +81,15 @@ define verilator_target_rules
   vtop_mk_stamp := $$(vtop_dir)/stamp
   vtop_dep_file := $$(vtop_dir)/Vtop__ver.d
 
+  vtop_cpp_deps := \
+    $$(foreach dep,$$(dep_tree/$$(rule_top)),$$(call core_paths,$$(dep),vl_files)) \
+    $$(vl_main)
+
   -include $$(vtop_dep_file)
   $$(vtop_dep_file):
 
   $$(vtop_exe): export VPATH := $$(src)
-  $$(vtop_exe): $$(vtop_mk_stamp)
+  $$(vtop_exe): $$(vtop_mk_stamp) $$(vtop_cpp_deps)
 	$$(call run_submake,BUILD) $$(if $$(V),,-s) -C $$(vtop_dir) -f Vtop.mk
 	@touch -c $$@
 
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