Fix GBA build not to build libraries that use stdlib

src/ox/CMakeLists.txt

@@ -1,5 +1,7 @@
 cmake_minimum_required(VERSION 2.8)
 
-add_subdirectory(clargs)
+if(OX_USE_STDLIB STREQUAL "ON")
+	add_subdirectory(clargs)
+endif(OX_USE_STDLIB STREQUAL "ON")
 add_subdirectory(fs)
 add_subdirectory(std)

src/ox/fs/filesystem.cpp

@@ -5,7 +5,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
-#include <stdio.h>
 #include "filesystem.hpp"
 
 namespace ox {