enable NDOF by default with cmake again, but check if it can be found on OSX, if not disable.

I cant test this but at least if I made a mistake it will just not find the SDK and disable. an osx dev needs to test.

CMakeLists.txt

@@ -179,7 +179,7 @@ option(WITH_LZO           "Enable fast LZO compression (used for pointcache)" ON
 option(WITH_LZMA          "Enable best LZMA compression, (used for pointcache)" ON)
 
 # Misc
-option(WITH_INPUT_NDOF "Enable NDOF input devices (SpaceNavigator and friends)" OFF)
+option(WITH_INPUT_NDOF "Enable NDOF input devices (SpaceNavigator and friends)" ON)
 option(WITH_RAYOPTIMIZATION	"Enable use of SIMD (SSE) optimizations for the raytracer" ON) 
 if(UNIX AND NOT APPLE)
 	option(WITH_INSTALL_PORTABLE "Install redistributeable runtime, otherwise install into CMAKE_INSTALL_PREFIX" ON)
@@ -998,9 +998,24 @@ elseif(APPLE)
 		elseif(WITH_CODEC_QUICKTIME)
 			set(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -framework QuickTime")
 		endif()
+
+		# XXX - SOME MAC DEV PLEASE TEST WITH THE SDK INSTALLED! 
+		# ALSO SHOULD BE MOVED INTO OWN MODULE WHEN FUNCTIONAL
+		if(WITH_INPUT_NDOF)
+			# This thread it *should* work and check the framework - campbell
+			# http://www.cmake.org/pipermail/cmake/2005-December/007740.html
+			find_library(3D_CONNEXION_CLIENT_LIBRARY
+				NAMES 3DconnexionClient
+			)
+			if(NOT 3D_CONNEXION_CLIENT_LIBRARY)
+				set(WITH_INPUT_NDOF OFF)
+			endif()
+		endif()
+
 	else()
 		set(PLATFORM_CFLAGS "-pipe -funsigned-char")
 		set(PLATFORM_LINKFLAGS "-fexceptions -framework CoreServices -framework Foundation -framework IOKit -framework AppKit -framework Carbon -framework AGL -framework AudioUnit -framework AudioToolbox -framework CoreAudio -framework QuickTime")
+		set(WITH_INPUT_NDOF OFF)  # unsupported
 	endif()
 
 	if(WITH_OPENCOLLADA)