> compile NEMU

ysyx_22040000 李心杨
Linux calcite 6.1.69 #1-NixOS SMP PREEMPT_DYNAMIC Wed Dec 20 16:00:29 UTC 2023 x86_64 GNU/Linux
 17:40:39  up  17:56,  2 users,  load average: 0.54, 0.46, 0.45

nemu/scripts/build.mk

@@ -30,7 +30,6 @@ OBJS = $(SRCS:%.c=$(OBJ_DIR)/%.o) $(CXXSRC:%.cc=$(OBJ_DIR)/%.o)
 # Compilation patterns
 $(OBJ_DIR)/%.o: %.c
 	@echo + CC $<
-	@echo $@ $<
 	@mkdir -p $(dir $@)
 	@$(CC) $(CFLAGS) -c -o $@ $<
 	$(call call_fixdep, $(@:.o=.d), $@)
@@ -41,6 +40,18 @@ $(OBJ_DIR)/%.o: %.cc
 	@$(CXX) $(CFLAGS) $(CXXFLAGS) -c -o $@ $<
 	$(call call_fixdep, $(@:.o=.d), $@)
 
+$(OBJ_DIR)/%.tag.c: %.y
+	@echo + YACC $<
+	@echo $@ $<
+	@mkdir -p $(dir $@)
+	@$(YACC) $(YFLAGS) --header=$(<:.y=.h) -o $@ $<
+
+$(OBJ_DIR)/%.yy.c: %.l $(OBJ_DIR)/%.tag.c
+	@echo + LEX $<
+	@echo $@ $<
+	@mkdir -p $(dir $@)
+	@$(LEX) $(LFLAGS) -o $@ $<
+
 # Depencies
 -include $(OBJS:.o=.d)