compile the emitted C

src/main.cc

@@ -84,6 +84,25 @@ bool emit_c(Node * node)
     return true;
 }
 
+bool compile()
+{
+    pid_t pid = fork();
+    if (pid < 0)
+    {
+        perror("fork");
+        return false;
+    }
+    else if (pid == 0)
+    {
+        execlp("gcc", "gcc", "-x", "c", "-c", c_fname, "-o", "out.o", NULL);
+    }
+    else
+    {
+        waitpid(pid, NULL, 0);
+    }
+    return true;
+}
+
 int main(int argc, char * argv[])
 {
     bool preprocess_successful = preprocess(argv[1]);
@@ -92,13 +111,20 @@ int main(int argc, char * argv[])
         Node * node = parse(preprocessed_fname);
         if (node != nullptr)
         {
-            emit_c(node);
+            if (emit_c(node))
+            {
+                compile();
+            }
         }
     }
     /* Clean up temporary files. */
     if (preprocessed_fname_created)
     {
-        //unlink(preprocessed_fname);
+        unlink(preprocessed_fname);
+    }
+    if (c_fname_created)
+    {
+        unlink(c_fname);
     }
 
     return 0;