今天初次使用modelism做ISE的联合仿真，出现如下的报错：

/***********************************/
WARNING: Failed to get the pre-compiled simulation library information. To resolve this issue, you can perform either of the following:

• If the libraries are already pre-compiled, point to them using one of the following methods:

• Set the MODELSIM environment variable to point to the modelsim.ini file
• Set the WD_MGC environment variable to point to the directory containing the modelsim.ini file
• Copy the modelsim.ini file to the project directory
• Set the simulation library path in the “Compiled Library Directory” property in either the “Compile HDL Simulation Libraries” or “Simulate Behavioral Model” processes.

/***********************************/

基本按照这个方法没有解决，链接，网上也都是同类的解决办法。没有什么效果，最后发现是路径的问题：
简单解决方法如下：
1.打开ISE-process-process-properties
2.仔细检查图中这一选项：

3.保证这一选项和ise安装库的路径一致，也就是某些教程里的这一步的路径（下图截取自某些安装教程）