diff --git a/Makefile b/Makefile
index e589b2b67..51733d404 100644
--- a/Makefile
+++ b/Makefile
@@ -588,6 +588,11 @@ $(eval $(call add_include_file,passes/fsm/fsmdata.h))
 $(eval $(call add_include_file,frontends/ast/ast.h))
 $(eval $(call add_include_file,backends/ilang/ilang_backend.h))
 $(eval $(call add_include_file,backends/cxxrtl/cxxrtl.h))
+$(eval $(call add_include_file,backends/cxxrtl/cxxrtl_vcd.h))
+$(eval $(call add_include_file,backends/cxxrtl/cxxrtl_capi.cc))
+$(eval $(call add_include_file,backends/cxxrtl/cxxrtl_capi.h))
+$(eval $(call add_include_file,backends/cxxrtl/cxxrtl_vcd_capi.cc))
+$(eval $(call add_include_file,backends/cxxrtl/cxxrtl_vcd_capi.h))
 
 OBJS += kernel/driver.o kernel/register.o kernel/rtlil.o kernel/log.o kernel/calc.o kernel/yosys.o
 OBJS += kernel/cellaigs.o kernel/celledges.o