From 001fb494ea8333ae2499875bd6ddf3ebcf049bc2 Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Thu, 28 Jul 2016 22:17:47 +0800
Subject: check -FS flags for windows

---
 xmake/tools/cl.lua   | 24 +++++++++++++++++++++---
 xmake/tools/link.lua | 11 ++++++++---
 2 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/xmake/tools/cl.lua b/xmake/tools/cl.lua
index 3ba31f18f..b7ce6b9e1 100755
--- a/xmake/tools/cl.lua
+++ b/xmake/tools/cl.lua
@@ -89,17 +89,35 @@ end
 -- make the symbol flag
 function symbol(level, symbolfile)
 
+    -- check -FS flags
+    if _g._FS == nil then
+        local ok = try
+        {
+            function ()
+                check("-ZI -FS -Fd" .. os.tmpfile() .. ".pdb")
+                return true
+            end
+        }
+        if ok then
+            _g._FS = true
+        end
+    end
+
     -- debug? generate *.pdb file
+    local flags = ""
     if level == "debug" then
         if symbolfile then
-            return "-ZI -FS -Fd" .. symbolfile 
+            flags = "-ZI -Fd" .. symbolfile 
+            if _g._FS then
+                flags = "-FS " .. flags
+            end
         else
-            return "-ZI"
+            flags = "-ZI"
         end
     end
 
     -- none
-    return ""
+    return flags
 end
 
 -- make the warning flag
diff --git a/xmake/tools/link.lua b/xmake/tools/link.lua
index c606edb74..cacbb3eab 100755
--- a/xmake/tools/link.lua
+++ b/xmake/tools/link.lua
@@ -78,12 +78,17 @@ end
 function symbol(level, symbolfile)
 
     -- debug? generate *.pdb file
-    if level == "debug" and symbolfile then
-        return "-debug -pdb:" .. symbolfile
+    local flags = ""
+    if level == "debug" then
+        if symbolfile then
+            flags = "-debug -pdb:" .. symbolfile
+        else
+            flags = "-debug"
+        end
     end
 
     -- none
-    return ""
+    return flags
 end
 
 -- make the linklib flag
-- 
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