fix build issue on Mac

Author: ekarak

binding.gyp

@@ -59,8 +59,8 @@
 					"OPENZWAVE_SECURITY=<!@(find <(OZW_INC) -name ZWSecurity.h | wc -l)",
 					"OPENZWAVE_EXCEPTIONS=<!@(find <(OZW_INC) -name OZWException.h | wc -l)",
 					"OPENZWAVE_16=<!@(find <(OZW_INC) -name ValueBitSet.h | wc -l)",
-					"OPENZWAVE_VALUETYPE_FROM_ENUM=<!@(ldconfig -p | grep 'libopenzwave.so ' | awk '{print $4}' | xargs nm -g --demangle |grep OpenZWave::Value::GetTypeNameFromEnum | wc -l)",
-					"OPENZWAVE_VALUETYPE_FROM_VALUEID=<!@(ldconfig -p | grep 'libopenzwave.so ' | awk '{print $4}' | xargs nm -g --demangle |grep OpenZWave::ValueID::GetTypeAsString | wc -l)",
+					"OPENZWAVE_VALUETYPE_FROM_ENUM=<!@(symbols <(OZW_LIB_PATH)/libopenzwave.dylib | awk '{print $4}' | grep OpenZWave::Value::GetTypeNameFromEnum | wc -l)",
+					"OPENZWAVE_VALUETYPE_FROM_VALUEID=<!@(symbols <(OZW_LIB_PATH)/libopenzwave.dylib | awk '{print $4}' | grep OpenZWave::ValueID::GetTypeAsString | wc -l)",
 				],
 				"link_settings": {
 				    "libraries": [