From aa72cd89981f7e63a383580c9599d6233f188661 Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Thu, 3 Nov 2011 04:37:51 +0000
Subject: use Gestalt for runtime Mac OS X version detection, and let this
 build on < 10.5

svn path=/trunk/externals/apple/; revision=15695
---
 sudden_motion_sensor.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'sudden_motion_sensor.c')

diff --git a/sudden_motion_sensor.c b/sudden_motion_sensor.c
index a9daa89..71f170a 100644
--- a/sudden_motion_sensor.c
+++ b/sudden_motion_sensor.c
@@ -26,6 +26,7 @@
 #include <mach/mach.h> 
 #include <IOKit/IOKitLib.h> 
 #include <CoreFoundation/CoreFoundation.h> 
+#include <CoreServices/CoreServices.h>
 #include <m_pd.h>
 
 #define DEBUG(x)
@@ -144,9 +145,11 @@ FOUND_SENSOR:
 
 #if !defined(__LP64__)
 	// Check if Mac OS X 10.5 API is available...
-	if (IOConnectCallStructMethod != NULL) {
+    SInt32 MacVersion;
+    if ((Gestalt(gestaltSystemVersion, &MacVersion) == noErr) && (MacVersion >= 0x1050)) {
 		// ...and use it if it is.
 #endif
+#ifdef AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER
 		kern_return = IOConnectCallStructMethod(
             io_connect,         // an io_connect_t returned from IOServiceOpen().
             kernel_function,	// selector of the function to be called via the user client.
@@ -155,6 +158,7 @@ FOUND_SENSOR:
             &outputStructure,    // pointer to the output struct parameter.
             &structureOutputSize// pointer to the size of the output structure parameter.
             );
+#endif
 #if !defined(__LP64__)
 	}
 	else {
-- 
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