TODO: implement tests

src/main.c

@@ -1,10 +1,29 @@
+/* main.c: defines the entry point for tcpl.
+   Copyright (C) vxclutch
+
+Written by vxclutch
+
+This file is part of tcpl
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE. */
+
 #include <libgen.h>
 #include <tcpl/tcpl.h>
 
-extern char* arg0;
-
 int main(int argc, char** argv)
 {
+	unused argc;
+
 	arg0 = basename(argv[0]);
 	tcpl_print("Hello, World!");
 	return 0;