From d986e3d5022914db01e4dec834de1368ab9147d4 Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Thu, 11 May 2017 11:22:06 +0800
Subject: cache version info

---
 xmake/core/base/os.lua | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/xmake/core/base/os.lua b/xmake/core/base/os.lua
index b5e397ed8..c78d41c67 100644
--- a/xmake/core/base/os.lua
+++ b/xmake/core/base/os.lua
@@ -33,9 +33,10 @@ local utils     = require("base/utils")
 local string    = require("base/string")
 
 -- save original interfaces
-os._mkdir  = os._mkdir or os.mkdir
-os._rmdir  = os._rmdir or os.rmdir
-os._tmpdir = os._tmpdir or os.tmpdir
+os._mkdir       = os._mkdir or os.mkdir
+os._rmdir       = os._rmdir or os.rmdir
+os._tmpdir      = os._tmpdir or os.tmpdir
+os._versioninfo = os._versioninfo or os.versioninfo
 
 -- copy single file or directory 
 function os._cp(src, dst)
@@ -596,5 +597,13 @@ function os.isexec(filepath)
     return os.isfile(filepath)
 end
 
+-- get version info
+function os.versioninfo()
+
+    -- cache it
+    os._VERSIONINFO = os._VERSIONINFO or os._versioninfo()
+    return os._VERSIONINFO
+end
+
 -- return module
 return os
-- 
cgit v1.3.1