From 0569acd5d6550788eca06e80e40432d13785c205 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sun, 2 Nov 2014 10:49:50 +0200
Subject: [PATCH] Fixed compilation issues with GCC 4.0.1 PowerPC

---
 src/cocoa/i_backend_cocoa.mm | 1 +
 src/cocoa/i_timer.cpp        | 8 +++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/cocoa/i_backend_cocoa.mm b/src/cocoa/i_backend_cocoa.mm
index ffd95b5b3..d2c8b3093 100644
--- a/src/cocoa/i_backend_cocoa.mm
+++ b/src/cocoa/i_backend_cocoa.mm
@@ -41,6 +41,7 @@
 
 #include <AppKit/AppKit.h>
 #include <Carbon/Carbon.h>
+#include <OpenGL/OpenGL.h>
 #include <OpenGL/gl.h>
 
 #include <SDL.h>
diff --git a/src/cocoa/i_timer.cpp b/src/cocoa/i_timer.cpp
index db6811212..0699a9967 100644
--- a/src/cocoa/i_timer.cpp
+++ b/src/cocoa/i_timer.cpp
@@ -2,6 +2,7 @@
 #include <assert.h>
 #include <sys/time.h>
 #include <pthread.h>
+#include <libkern/OSAtomic.h>
 
 #include <SDL.h>
 
@@ -92,7 +93,12 @@ void* TimerThreadFunc(void*)
 
 		if (!g_isTicFrozen)
 		{
-			__sync_add_and_fetch(&s_tics, 1);
+			// The following GCC/Clang intrinsic can be used instead of OS X specific function:
+			// __sync_add_and_fetch(&s_tics, 1);
+			// Although it's not supported on all platform/compiler combination,
+			// e.g. GCC 4.0.1 with PowerPC target architecture
+
+			OSAtomicIncrement32(&s_tics);
 		}
 
 		s_timerStart = SDL_GetTicks();