Update NativeObject cmake files.

cmake/LuaNativeObjects.cmake

@@ -7,6 +7,9 @@ set(LUA_NATIVE_OBJECTS_PATH ${CMAKE_SOURCE_DIR}/../LuaNativeObjects CACHE PATH
 set(USE_PRE_GENERATED_BINDINGS TRUE CACHE BOOL
 				"Set this to FALSE to re-generate bindings using LuaNativeObjects")
 
+set(GENERATE_LUADOCS TRUE CACHE BOOL
+				"Set this to FALSE to avoid generation of docs using LuaDoc")
+
 macro(GenLuaNativeObjects _src_files_var)
 	set(_new_src_files)
 	foreach(_src_file ${${_src_files_var}})
@@ -20,6 +23,7 @@ macro(GenLuaNativeObjects _src_files_var)
 			)
 			set_source_files_properties(${_src_file_out} PROPERTIES GENERATED TRUE)
 			set_source_files_properties(${_ffi_file_out} PROPERTIES GENERATED TRUE)
+			if (${GENERATE_LUADOCS})
 				string(REGEX REPLACE ".nobj.lua" "" _doc_base ${_src_file})
 				string(REGEX REPLACE ".nobj.lua" ".luadoc" _doc_file_out ${_src_file})
 				add_custom_target(${_doc_file_out} ALL
@@ -28,6 +32,7 @@ macro(GenLuaNativeObjects _src_files_var)
 					WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
 					DEPENDS ${_src_file}
 				)
+			endif()
 			set_source_files_properties(${_doc_file_out} PROPERTIES GENERATED TRUE)
 			set(_new_src_files ${_new_src_files} ${_src_file_out})
 		else(_src_file MATCHES ".nobj.lua")