Makefile.core

CFLAGS = -std=c++20 -O3 -flto
#CFLAGS = -std=c++20 -g -O0 
VFLAGS = #--trace-fst
VLTPAT = /usr/share/verilator/include

VFILES   =  ver/video.sv            \
            ver/memory.sv           \
            ver/register.sv         \
            ver/core.sv             \
            ver/core_irq.sv         \
            ver/core_alu.sv         \
            ver/core_decoder.sv     \
            ver/core_executor.sv       
          
VHEADERS =  ver/core_control.svh     
TOP      =  core


all: out/launch

clean: 
  rm -rf out/ver/* out/cpp/* out/launch 

out/lib/verilated.o: $(VLTPAT)/verilated.cpp
  g++ -c $(CFLAGS) -I$(VLTPAT) -I$(VLTPAT)/vltstd -o $@ $^

out/lib/verilated_fst_c.o: $(VLTPAT)/verilated_fst_c.cpp
  g++ -c $(CFLAGS) -I$(VLTPAT) -I$(VLTPAT)/vltstd -o $@ $^

out/lib/verilated_vcd_c.o: $(VLTPAT)/verilated_vcd_c.cpp
  g++ -c $(CFLAGS) -I$(VLTPAT) -I$(VLTPAT)/vltstd -o $@ $^

out/lib/verilated_dpi.o: $(VLTPAT)/verilated_dpi.cpp
  g++ -c $(CFLAGS) -I$(VLTPAT) -I$(VLTPAT)/vltstd -o $@ $^

out/ver/libwidget.a out/ver/Vcore.h: $(VFILES) $(VHEADERS)
  verilator --cc -Mdir out/ver -y ver -y ver/tests -y ver/games --top-module core $(VFILES) -CFLAGS "$(CFLAGS)" $(VFLAGS)
  $(MAKE) -C out/ver -f V$(TOP).mk
  mv out/ver/V$(TOP)__ALL.a out/ver/lib$(TOP).a 

out/launch: cpp/widget_main.cpp out/ver/V$(TOP).h out/lib/verilated.o out/lib/verilated_fst_c.o out/lib/verilated_dpi.o out/ver/lib$(TOP).a 
  g++ $(CFLAGS)                           \
    -Iout/ver                             \
    -I$(VLTPAT)                           \
    -I$(VLTPAT)/vltstd                    \
    -o $@                                 \
    -Wl,--start-group                     \
      out/lib/verilated.o                 \
      out/lib/verilated_fst_c.o           \
      out/lib/verilated_dpi.o             \
      cpp/nestest_main.cpp                \
      out/ver/lib$(TOP).a                 \
    -Wl,--end-group