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
---
 ambient_light_sensor.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'ambient_light_sensor.c')

diff --git a/ambient_light_sensor.c b/ambient_light_sensor.c
index 4e7df0a..26c18db 100644
--- a/ambient_light_sensor.c
+++ b/ambient_light_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)
@@ -76,9 +77,11 @@ static void ambient_light_sensor_output(t_ambient_light_sensor* x)
 
 #if !defined(__LP64__)
 	// Check if Mac OS X 10.5 API is available...
-	if (IOConnectCallScalarMethod != 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
         uint64_t inputValues[0];
         uint32_t inputCount = 0;
         uint64_t outputValues[2];
@@ -91,6 +94,7 @@ static void ambient_light_sensor_output(t_ambient_light_sensor* x)
                                                &outputCount);
         left = (t_float) (outputValues[0] / 2000.0);
         right = (t_float) (outputValues[1] / 2000.0);
+#endif
 #if !defined(__LP64__)
 	}
 	else {
-- 
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