undefined reference to `semphrHandle_TCP'

根据提供的引用内容，undefined reference to `semphrHandle_TCP`是一个编译错误，它表示在代码中找不到`semphrHandle_TCP`的定义。这可能是由于以下几个原因导致的：

1. 缺少头文件：请确保在代码中包含了定义`semphrHandle_TCP`的头文件。

2. 缺少库文件：请确保在代码中链接了包含`semphrHandle_TCP`定义的库文件。

3. 命名错误：请检查代码中是否正确拼写了`semphrHandle_TCP`。

4. 作用域问题：请确保在使用`semphrHandle_TCP`之前已经定义了它。

请根据以上几点检查你的代码，找出导致undefined reference to `semphrHandle_TCP`错误的原因，并进行相应的修正。
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