From ef916835e80a9d9e57a16e5533017daa6966a887 Mon Sep 17 00:00:00 2001
From: John Breaux <JohnBreaux@my.unt.edu>
Date: Tue, 5 Apr 2022 17:56:11 -0500
Subject: [PATCH] Update Makefile to produce dependencies & objects

---
 .gitignore   |  2 ++
 Makefile     | 47 +++++++++++++++++++++------
 src/test.cpp | 89 ----------------------------------------------------
 3 files changed, 40 insertions(+), 98 deletions(-)
 delete mode 100644 src/test.cpp

diff --git a/.gitignore b/.gitignore
index 39fa3a9..ff18145 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,8 @@
 # ---> C++
 # Prerequisites
 *.d
+dep/
+obj/
 
 # Compiled Object files
 *.slo
diff --git a/Makefile b/Makefile
index 5fb4ec5..9de0d73 100644
--- a/Makefile
+++ b/Makefile
@@ -1,19 +1,48 @@
+# Executable
+TARGET := main.out
 
+# Paths to source, dependency, object files
+SPATH = src
+IPATH = inc
+DPATH = dep
+OPATH = obj
+
+VPATH = $(SPATH) $(OPATH) $(IPATH) $(DPATH)
+
+# compiler and compiler flags
 CC = g++
-CFLAGS = -Iinc -pthread -lrt
-VPATH = src
+CFLAGS = -MMD -I$(IPATH) -pthread -lrt
 
-OBJECTS := %.o list.o producer.o transformer.o consumer.o
-EXECUTE := main.out #test.out
+# list of object files
+SOURCES = $(wildcard $(SPATH)/*.cpp)
+OBJECTS = $(addprefix $(OPATH)/,$(notdir $(SOURCES:.cpp=.o)))
 
-.PHONY: all clean
+.PHONY: all clean dump
 
-all: $(EXECUTE)
+all: $(DPATH) $(OPATH) $(TARGET)
+
+dump:
+	@echo SOURCES: $(SOURCES)
+	@echo OBJECTS: $(OBJECTS)
+	@echo TARGET:  $(TARGET)
+	@echo VPATH:   $(VPATH)
 
 clean:
-	rm $(EXECUTE)
+	-rm $(TARGET)
+	-rm -r dep obj
 
+$(DPATH) $(OPATH):
+	mkdir -p $@
+
+# Make the executable(s)
 %.out: $(OBJECTS)
 	$(CC) $(CFLAGS) -o $@ $^
-%.o: %.cpp
-	$(CC) $(CFLAGS) -c $<
+# Make the object and dependency files
+$(OPATH)/%.o $(DPATH)/%.d: $(SPATH)/%.cpp
+	$(CC) $(CFLAGS) -MF $(DPATH)/$(@F:.o=.d) -o $@ -c $<
+
+# Don't delete object files:
+.PRECIOUS: $(OPATH)/%.o $(DPATH)/%.d
+
+# use dependencies when rebuilding
+-include $(addprefix $(DPATH)/,$(wildcard *.d))
diff --git a/src/test.cpp b/src/test.cpp
deleted file mode 100644
index 7f32713..0000000
--- a/src/test.cpp
+++ /dev/null
@@ -1,89 +0,0 @@
-#include <semaphore.h>
-#include <stdint.h>
-#include <stdio.h>
-#include "list.hpp"
-#include "globals.hpp"
-#include "producer.hpp"
-#include "consumer.hpp"
-#include "transformer.hpp"
-
-// Create all of memory
-block memory[N] = {0};
-// create the three lists
-list lists[3] = {0};
-list *freelist = &lists[0],
-     *list1 = &lists[1],
-     *list2 = &lists[2];
-
-// count semaphores
-sem_t sem_freelist, sem_list1, sem_list2;
-// binary semaphores
-sem_t mut_freelist, mut_list1, mut_list2;
-
-void producer_test();
-void transfer_test();
-void consumer_test();
-
-int main(int argc, char *argv[]) {
-   list_init(freelist, memory, N);
-   list_print(freelist);
-   //producer_test();
-   //transfer_test();
-   //consumer_test();
-}
-
-void producer_test() {
-   printf("Starting producer_test:\n");\
-   producer(NULL);
-   list_print(freelist);
-   list_print(list1);
-   list_print(list2);
-   printf("Ending producer_test\n");
-}
-
-void transfer_test() {
-   printf("Starting transfer_test:\n");
-   transformer(NULL);
-   list_print(freelist);
-   list_print(list1);
-   list_print(list2);
-   printf("Ending transfer_test\n");
-}
-
-void consumer_test() {
-   printf("Starting consumer_test:\n");
-   consumer(NULL);
-   list_print(freelist);
-   list_print(list1);
-   list_print(list2);
-   printf("Ending consumer_test\n");
-}
-
-/*
-int movement_test () {
-
-   // Create all of memory
-   block memory[N] = {0};
-   // create the three lists
-   list freelist = {0}, list1 = {0};
-   // initialize the freelist
-   list_init(&freelist, memory, N);
-
-   // print the lists
-   std::printf("Lists:\n");
-   list_print(&freelist);
-   list_print(&list1);
-
-   // move a block
-   block *b;
-   while (b = list_unlink(&freelist))
-   {
-      list_link(&list1, b);
-   }
-   // print the lists again (should be reversed order)
-   std::printf("Lists, again:\n");
-   list_print(&freelist);
-   list_print(&list1);
-   return 1;
-}
-*/
\ No newline at end of file