1 files changed, 17 insertions, 3 deletions
diff --git a/xmake/core/project/option.lua b/xmake/core/project/option.lua
index c5a8c7322..292adacba 100644
--- a/xmake/core/project/option.lua
+++ b/xmake/core/project/option.lua
@@ -43,9 +43,10 @@ local sandbox_module = require("sandbox/modules/import/core/sandbox/module")
 
 -- new an instance
 function _instance.new(name, info)
-    local instance = table.inherit(_instance)
-    instance._NAME = name
-    instance._INFO = info
+    local instance    = table.inherit(_instance)
+    instance._NAME    = name
+    instance._INFO    = info
+    instance._CACHEID = 1
     return instance
 end
 
@@ -181,6 +182,11 @@ function _instance:_check()
     io.flush()
 end
 
+-- invalidate the previous cache key
+function _instance:_invalidate()
+    self._CACHEID = self._CACHEID + 1
+end
+
 -- attempt to check option 
 function _instance:check()
 
@@ -296,16 +302,19 @@ end
 -- set the value to the option info
 function _instance:set(name, ...)
     self._INFO:apival_set(name, ...)
+    self:_invalidate()
 end
 
 -- add the value to the option info
 function _instance:add(name, ...)
     self._INFO:apival_add(name, ...)
+    self:_invalidate()
 end
 
 -- remove the value to the option info
 function _instance:del(name, ...)
     self._INFO:apival_del(name, ...)
+    self:_invalidate()
 end
 
 -- get the extra configuration
@@ -336,6 +345,11 @@ function _instance:name()
     return self._NAME
 end
 
+-- get the cache key 
+function _instance:cachekey()
+    return string.format("%s_%d", tostring(self), self._CACHEID)
+end
+
 -- get xxx_script
 function _instance:script(name)