<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/143822>143822</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            `multiple rules generate lib/unwind.lib` when buliding with ninja
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          solomoncyj
      </td>
    </tr>
</table>

<pre>
    i'm trying to build libunwind, but ninja complainds the above error after cmake config
</pre>
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