add CM_BUILD_TOOLS and CM_BUILD_EXAMPLES options

CMakeLists.txt

@@ -20,5 +20,15 @@ use_cm_module(AssetsManage)
 
 CMUtilSetup(${CMAKE_CURRENT_SOURCE_DIR}/CMUtil)
 
-add_subdirectory(TexConv)
+OPTION(CM_BUILD_TOOLS       OFF)
-add_subdirectory(ShaderMaker)
+
+if(CM_BUILD_TOOLS)
+    add_subdirectory(TexConv)
+    add_subdirectory(ShaderMaker)
+endif(CM_BUILD_TOOLS)
+
+OPTION(CM_BUILD_EXAMPLES    OFF)
+
+if(CM_BUILD_EXAMPLES)
+    add_subdirectory(Examples)
+endif(CM_BUILD_EXAMPLES)