From d353b2984472824d0347e0e8a7ffb1112d6ebab2 Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Sun, 28 Feb 2016 20:24:13 +0800
Subject: check on_task_run

---
 xmake/core/base/task.lua | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/xmake/core/base/task.lua b/xmake/core/base/task.lua
index abdd40569..9c7d01abd 100644
--- a/xmake/core/base/task.lua
+++ b/xmake/core/base/task.lua
@@ -184,7 +184,17 @@ function task.run(name)
     -- get the task info
     local taskinfo = tasks[name]
     if not taskinfo then
-        utils.error("unknown task: %s", name)
+
+        -- trace
+        utils.error("task(\"%s\"): unknown task", name)
+        return false
+    end
+
+    -- check
+    if not taskinfo.run then
+
+        -- trace
+        utils.error("task(\"%s\"): no run script, please call on_task_run() first!", name)
         return false
     end
 
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