using ramulator dram simulator

sim/simx/Makefile

@@ -1,3 +1,4 @@
+DESTDIR ?= .
 RTL_DIR = ../hw/rtl
 THIRD_PARTY_DIR = ../../third_party
 
@@ -5,15 +6,17 @@ CXXFLAGS += -std=c++11 -Wall -Wextra -Wfatal-errors
 CXXFLAGS += -fPIC -Wno-maybe-uninitialized
 CXXFLAGS += -I. -I../common -I../../hw
 CXXFLAGS += -I$(THIRD_PARTY_DIR)/softfloat/source/include
-CXXFLAGS += -I$(THIRD_PARTY_DIR)/cocogfx/include
+CXXFLAGS += -I$(THIRD_PARTY_DIR)
 CXXFLAGS += $(CONFIGS)
 
-LDFLAGS += $(THIRD_PARTY_DIR)/softfloat/build/Linux-x86_64-GCC/softfloat.a -L$(THIRD_PARTY_DIR)/cocogfx -lcocogfx
+LDFLAGS += $(THIRD_PARTY_DIR)/softfloat/build/Linux-x86_64-GCC/softfloat.a 
+LDFLAGS += -L$(THIRD_PARTY_DIR)/cocogfx -lcocogfx 
+LDFLAGS += -L$(THIRD_PARTY_DIR)/ramulator -lramulator
 
 TOP = vx_cache_sim
 
-SRCS = ../common/util.cpp ../common/mem.cpp ../common/rvfloats.cpp 
-SRCS += args.cpp cache.cpp memsim.cpp warp.cpp core.cpp decode.cpp execute.cpp exeunit.cpp tex_unit.cpp processor.cpp main.cpp
+SRCS = ../common/util.cpp ../common/mem.cpp ../common/rvfloats.cpp
+SRCS += args.cpp cache.cpp memsim.cpp warp.cpp core.cpp decode.cpp execute.cpp exeunit.cpp tex_unit.cpp processor.cpp
 
 OBJS := $(patsubst %.cpp, obj_dir/%.o, $(notdir $(SRCS)))
 VPATH := $(sort $(dir $(SRCS)))
@@ -30,23 +33,16 @@ endif
 
 PROJECT = simx
 
-all: $(PROJECT)
-
-$(PROJECT): $(SRCS)
+all: $(DESTDIR)/$(PROJECT)
+	
+$(DESTDIR)/$(PROJECT): $(SRCS) main.cpp
 	$(CXX) $(CXXFLAGS) $^ $(LDFLAGS) -o $@
 
-obj_dir/%.o: %.cpp
-	mkdir -p obj_dir
-	$(CXX) $(CXXFLAGS) -c $< -o $@
-
-static: $(OBJS)
-	$(AR) rcs lib$(PROJECT).a $(OBJS) $(THIRD_PARTY_DIR)/softfloat/build/Linux-x86_64-GCC/*.o
+$(DESTDIR)/lib$(PROJECT).so: $(SRCS)
+	$(CXX) $(CXXFLAGS) $^ -shared $(LDFLAGS) -o $@
 
 .depend: $(SRCS)
 	$(CXX) $(CXXFLAGS) -MM $^ > .depend;
 
-clean-static:
-	rm -rf lib$(PROJECT).a obj_dir .depend
-
-clean: clean-static
-	rm -rf $(PROJECT)
+clean:
+	rm -rf obj_dir $(DESTDIR)/$(PROJECT) $(DESTDIR)/lib$(PROJECT).so