From 97509f548a20a67b860ffe8cfb5a1dacea00e72b Mon Sep 17 00:00:00 2001
From: Luke Wren <wren6991@gmail.com>
Date: Fri, 24 Mar 2023 18:44:37 +0000
Subject: [PATCH] tb_cxxrtl Makefile: better support for building multiple tb
 configurations

---
 test/sim/tb_cxxrtl/.gitignore |  3 +++
 test/sim/tb_cxxrtl/Makefile   | 16 +++++++++-------
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/test/sim/tb_cxxrtl/.gitignore b/test/sim/tb_cxxrtl/.gitignore
index 719db5b..36cab80 100644
--- a/test/sim/tb_cxxrtl/.gitignore
+++ b/test/sim/tb_cxxrtl/.gitignore
@@ -1,2 +1,5 @@
 tb
 dut.cpp
+build.*
+tb_multicore
+
diff --git a/test/sim/tb_cxxrtl/Makefile b/test/sim/tb_cxxrtl/Makefile
index 299564a..22ea118 100644
--- a/test/sim/tb_cxxrtl/Makefile
+++ b/test/sim/tb_cxxrtl/Makefile
@@ -1,20 +1,22 @@
 TOP    := tb
 DOTF   := tb.f
 CONFIG := default
+TBEXEC := $(patsubst %.f,%,DOTF)
 
 .PHONY: clean all
 
-all: tb
+all: $(TBEXEC)
 
 SYNTH_CMD += read_verilog -I ../../../hdl -DCONFIG_HEADER="config_$(CONFIG).vh" $(shell listfiles $(DOTF));
 SYNTH_CMD += hierarchy -top $(TOP);
-SYNTH_CMD += write_cxxrtl dut.cpp
+SYNTH_CMD += write_cxxrtl build-$(DOTF)/dut.cpp
 
-dut.cpp: $(shell listfiles $(DOTF))
-	yosys -p '$(SYNTH_CMD)' 2>&1 > cxxrtl.log
+build-$(DOTF)/dut.cpp: $(shell listfiles $(DOTF))
+	mkdir -p build-$(DOTF)
+	yosys -p '$(SYNTH_CMD)' 2>&1 > build-$(DOTF)/cxxrtl.log
 
 clean::
-	rm -f dut.cpp cxxrtl.log tb
+	rm -f build-$(DOTF) $(TBEXEC)
 
-tb: dut.cpp tb.cpp
-	clang++ -O3 -std=c++14 $(addprefix -D,$(CDEFINES)) -I $(shell yosys-config --datdir)/include tb.cpp -o tb
+$(TBEXEC): build-$(DOTF)/dut.cpp tb.cpp
+	clang++ -O3 -std=c++14 $(addprefix -D,$(CDEFINES)) -I $(shell yosys-config --datdir)/include -I build-$(DOTF) tb.cpp -o $(TBEXEC)