Allow compilation with SDK 10.10 and use new API to discover os version at runtime.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10305 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/mac.H

@@ -64,6 +64,12 @@ typedef CGContextRef Fl_Offscreen;
 #ifndef MAC_OS_X_VERSION_10_8
 #define MAC_OS_X_VERSION_10_8 1080
 #endif
+#ifndef MAC_OS_X_VERSION_10_9
+#define MAC_OS_X_VERSION_10_9 1090
+#endif
+#ifndef MAC_OS_X_VERSION_10_10
+#define MAC_OS_X_VERSION_10_10 101000
+#endif
 
 #ifdef __OBJC__
 @class NSCursor;

src/Fl_cocoa.mm

@@ -3870,13 +3870,16 @@ void *Fl_X::get_carbon_function(const char *function_name) {
 static int calc_mac_os_version() {
   int M, m, b = 0;
   NSAutoreleasePool *localPool = [[NSAutoreleasePool alloc] init];
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_10
   if ([NSProcessInfo instancesRespondToSelector:@selector(operatingSystemVersion)]) {
     NSOperatingSystemVersion version = [[NSProcessInfo processInfo] operatingSystemVersion];
     M = version.majorVersion;
     m = version.minorVersion;
     b = version.patchVersion;
   }
-  else {
+  else
+#endif
+  {
     NSDictionary * sv = [NSDictionary dictionaryWithContentsOfFile:@"/System/Library/CoreServices/SystemVersion.plist"];
     const char *s = [[sv objectForKey:@"ProductVersion"] UTF8String];
     sscanf(s, "%d.%d.%d", &M, &m, &b);