Index: source/graphics/TextureConverter.cpp
===================================================================
--- source/graphics/TextureConverter.cpp    (revision 22650)
+++ source/graphics/TextureConverter.cpp    (working copy)
@@ -286,8 +286,6 @@

    // Set up the worker thread:

-   int ret;
-
    // Use SDL semaphores since OS X doesn't implement sem_init
    m_WorkerSem = SDL_CreateSemaphore(0);
    ENSURE(m_WorkerSem);
Index: source/graphics/TextureConverter.h
===================================================================
--- source/graphics/TextureConverter.h  (revision 22650)
+++ source/graphics/TextureConverter.h  (working copy)
@@ -23,6 +23,7 @@

 #include "TextureManager.h"

+#include <mutex>
 #include <thread>

 class MD5;
Index: source/lib/timer.cpp
===================================================================
--- source/lib/timer.cpp    (revision 22650)
+++ source/lib/timer.cpp    (working copy)
@@ -32,6 +32,7 @@
 #include <cmath>
 #include <cfloat>
 #include <cstdarg>
+#include <mutex>

 #include "lib/module_init.h"
 #include "lib/posix/posix_pthread.h"