diff --git a/neo/renderer/qgl.h b/neo/renderer/qgl.h
index 7632136b..846a0d74 100644
--- a/neo/renderer/qgl.h
+++ b/neo/renderer/qgl.h
@@ -96,6 +96,10 @@ extern	void ( APIENTRY *qglColorTableEXT)( int, int, int, int, int, const void *
 extern	PFNGLACTIVESTENCILFACEEXTPROC	qglActiveStencilFaceEXT;
 
 // DG: couldn't find any extension for this, it's supported in GL2.0 and newer, incl OpenGL ES2.0
+// SE: work around missing function definition on legacy Mac OS X versions
+#if defined(OSX_TIGER) || defined(OSX_LEOPARD)
+typedef void (APIENTRYP PFNGLSTENCILOPSEPARATEPROC) (GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
+#endif
 extern PFNGLSTENCILOPSEPARATEPROC qglStencilOpSeparate;
 
 // ARB_texture_compression
diff --git a/neo/sys/glimp.cpp b/neo/sys/glimp.cpp
index 95501dd3..322ac21a 100644
--- a/neo/sys/glimp.cpp
+++ b/neo/sys/glimp.cpp
@@ -246,6 +246,7 @@ bool GLimp_Init(glimpParms_t parms) {
 #if SDL_VERSION_ATLEAST(2, 0, 0)
 		int displayIndex = 0;
 
+#if SDL_VERSION_ATLEAST(2, 0, 4)
 		// try to put the window on the display the mousecursor currently is on
 		{
 			int x, y;
@@ -264,6 +265,7 @@ bool GLimp_Init(glimpParms_t parms) {
 				}
 			}
 		}
+#endif
 
 		window = SDL_CreateWindow(ENGINE_VERSION,
 									SDL_WINDOWPOS_UNDEFINED_DISPLAY(displayIndex),
diff --git a/neo/sys/platform.h b/neo/sys/platform.h
index 4e78868c..ac27a08e 100644
--- a/neo/sys/platform.h
+++ b/neo/sys/platform.h
@@ -200,6 +200,18 @@ If you have questions concerning this license or the applicable additional terms
 #undef FindText								// stupid namespace poluting Microsoft monkeys
 #endif
 
+// Apple legacy
+#ifdef __APPLE__
+#include <Availability.h>
+#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
+#if __MAC_OS_X_VERSION_MIN_REQUIRED == 1040
+#define OSX_TIGER
+#elif __MAC_OS_X_VERSION_MIN_REQUIRED < 1060
+#define OSX_LEOPARD
+#endif
+#endif
+#endif
+
 #define ID_TIME_T time_t
 
 typedef unsigned char			byte;		// 8 bits
diff --git a/neo/sys/posix/posix_main.cpp b/neo/sys/posix/posix_main.cpp
index 58c878f5..884349b8 100644
--- a/neo/sys/posix/posix_main.cpp
+++ b/neo/sys/posix/posix_main.cpp
@@ -401,7 +401,7 @@ int Sys_GetDriveFreeSpace( const char *path ) {
 static const int   crashSigs[]     = {  SIGILL,   SIGABRT,   SIGFPE,   SIGSEGV };
 static const char* crashSigNames[] = { "SIGILL", "SIGABRT", "SIGFPE", "SIGSEGV" };
 
-#if ( defined(__linux__) && defined(__GLIBC__) ) || defined(__FreeBSD__) || defined(__APPLE__)
+#if ( defined(__linux__) && defined(__GLIBC__) ) || defined(__FreeBSD__) || (defined(__APPLE__) && !defined(OSX_TIGER))
   #define D3_HAVE_BACKTRACE
   #include <execinfo.h>
 #endif