improve platform check for target toolchains

1 files changed, 6 insertions, 0 deletions

diff --git a/xmake/core/platform/platform.lua b/xmake/core/platform/platform.lua
index 01d5b0e5e..148120d49 100644
--- a/xmake/core/platform/platform.lua
+++ b/xmake/core/platform/platform.lua
@@ -234,6 +234,10 @@ end
 
 -- do check
 function _instance:check()
+    local checked = self._CHECKED
+    if checked ~= nil then
+        return checked
+    end
 
     -- check toolchains
     local toolchains = self:toolchains({all = true})
@@ -256,11 +260,13 @@ function _instance:check()
         end
     end
     if #toolchains == 0 then
+        self._CHECKED = false
         return false, "toolchains not found!"
     end
 
     -- save valid toolchains
     config.set("__toolchains_" .. self:name() .. "_" .. self:arch(), toolchains_valid)
+    self._CHECKED = true
     return true
 end