<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/89651>89651</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [libc] are compiler flags being cached?
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            build-problem,
            libc
      </td>
    </tr>

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

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

<pre>
    So in https://github.com/llvm/llvm-project/pull/87837, I'm trying to fix the failing setjmp/longjmp tests, but curiously none of the post submit bots have failed...

I wonder if the compiler flags are being cached in the cmake build?  IIRC, there was something in cmake syntax where you could say `set(foo value CACHE OFF)` or something to stop that.  Perhaps that (or whatever it is that I'm thinking of, or something else) is needed here?
</pre>
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