<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/57890>57890</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Install of libc++ headers into an existing tree fails in llvm-15.0.1 using ninja
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

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

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

<pre>
    The failure occurs when trying to install the header files. The item ```c++/v1/__string``` changes in the 15 runtime from a regular file to a directory, and that causes the install to fail.

```llvm-15.0.1``` ```cmake-3.24.2``` ```ninja-1.11.0``` ```macOS 10.12.6```
</pre>
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