<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/82197>82197</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            llvm-project/libcxx/src/exception.cpp:14:12: fatal error: 'cxxabi.h' file not found
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            libc++
      </td>
    </tr>

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

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

<pre>
    I'm trying to build by configuring with cmake:

```
cmake -S llvm -B assert -G Ninja -DLLVM_ENABLE_PROJECTS="clang;mlir" -DLLVM_ENABLE_ASSERTIONS=ON -DCMAKE_BUILD_TYPE=Release
```

and then building:

```
cmake --build assert
```

and hitting:

```
llvm-project/libcxx/src/exception.cpp:14:12: fatal error: 'cxxabi.h' file not found
   14 | #  include <cxxabi.h>
      | ^~~~~~~~~~
1 error generated.
```

I'm building on macOS using Xcode 15.2.

My repo is currently synced to `79709498eaa5`.
</pre>
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