fixed makefile, main compilation and test compilation

Makefile

 CC:=gcc
-CFLAGS:= -g -Wextra -pedantic -fsanitize=address
+CFLAGS:=-g -Wall -Wextra -pedantic -fsanitize=address
+LDFLGS:=-fsanitize=address
 NAME:=stack
 
 $(NAME): main.o $(NAME).o
-    $(CC) $(CFLAGS) -o $@ $^ -lSDL2
+	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
-tests: $(NAME)_tests.o $(NAME).o
-    $(CC) $(CFLAGS) -o $@ $^
+test: $(NAME)_test.o $(NAME).o
+	$(CC) $(CFLAGS) -o $@ $^
+	./test
 
 $(NAME).o: $(NAME).h
 
+.PHONY: clean
+
 clean:
-    rm -f *.o $(NAME) tests
+	rm -f *.o $(NAME) tests

main.c

+#include "stack.h"
 #include <stdio.h>
-#include "../include/stack.h"
+#include <stdlib.h>
 
 int main(void) {
-	return EXIT_SUCCESS;
-}
\ No newline at end of file
+    return EXIT_SUCCESS;
+}

stack.c

+#include "stack.h"
 #include <stdio.h>
 #include <stdlib.h>
-#include "stack.h"
 
 #define DEFAULT_CAPACITY 4
 
-void stack_init(stack *s)
-{
-    s->top = -1;
+void stack_init(stack *s) {
+    s->top      = -1;
     s->capacity = DEFAULT_CAPACITY;
-    s->data = malloc(sizeof(int) * DEFAULT_CAPACITY);
+    s->data     = malloc(sizeof(int) * DEFAULT_CAPACITY);
 }
 
-void stack_destroy(stack *s){
+void stack_destroy(stack *s) {
     free(s->data);
-    s->data = NULL;
+    s->data     = NULL;
     s->capacity = -1;
-    s->top = -1;
+    s->top      = -1;
 }
 
-void stack_pop(stack *s, int *value){
-	if (stack_is_empty(*s)) {
-		return;
-	}	
-	if (s->top == s->capacity/4){
-		s->capacity /= 2;
-		s->data = realloc(s->data, sizeof(int)*s->capacity);
-	}
+void stack_pop(stack *s, int *value) {
+    if (stack_is_empty(*s)) {
+        return;
+    }
+    if (s->top == s->capacity / 4) {
+        s->capacity /= 2;
+        s->data = realloc(s->data, sizeof(int) * s->capacity);
+    }
 
-	*value = s->data[s->top];
-	s->top -= 1;
+    *value = s->data[s->top];
+    s->top -= 1;
 }
 
-void stack_peek(stack s, int *value){
+void stack_peek(stack s, int *value) {
     if (!stack_is_empty(s)) {
         *value = s.data[s.top];
     }
 }
 
 void stack_print(const stack s) {
-	//TODO: replace if statement with following as soon as relevant function is implemented
-	//if (!stack_is_empty()) {
-	if (s.top >= 0) {
-		printf("          TOP\n--------------------\n");
-		for (int* spot = s.data + s.top; spot >= s.data; --spot) {
-			printf("%8d |  %12d\n", spot - s.data, *spot);
-		}
-		printf("--------------------\n          BOTTOM\n");
-	} else {
-		printf("STACK EMPTY\n");
-	}
+    // TODO: replace if statement with following as soon as relevant function is
+    // implemented if (!stack_is_empty()) {
+    if (s.top >= 0) {
+        printf("          TOP\n--------------------\n");
+        for (int *spot = s.data + s.top; spot >= s.data; --spot) {
+            printf("%8ld |  %12d\n", spot - s.data, *spot);
+        }
+        printf("--------------------\n          BOTTOM\n");
+    } else {
+        printf("STACK EMPTY\n");
+    }
 }
 
 void stack_clone(stack s, stack *clone) {
-    clone->top = s.top;
+    clone->top      = s.top;
     clone->capacity = s.capacity;
-    clone->data = malloc(sizeof(int) * s.capacity);
+    clone->data     = malloc(sizeof(int) * s.capacity);
     for (int i = 0; i <= s.top && i < s.capacity; i++) {
         clone->data[i] = s.data[i];
     }
 }
 
-int get_length(stack s)
-{
+int get_length(stack s) {
     return s.top + 1;
 }

stack_test.c

 #include "minunit.h"
 #include "stack.h"
+#include <stdlib.h>
 
 MU_TEST(stack_init_test) {
     // Arrange
@@ -20,8 +21,8 @@ MU_TEST_SUITE(stack_test_suite) {
     MU_RUN_TEST(stack_init_test);
 }
 
-int main () {
+int main() {
     MU_RUN_SUITE(stack_test_suite);
     MU_REPORT();
     return MU_EXIT_CODE;
-}
\ No newline at end of file
+}