<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/54973>54973</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            compiler-rt compilation error
        </td>
    </tr>

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

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

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

<pre>
    Hi there,
I have tried to compile compiler-rt from source and I got the following error message:
```
CMake Error in /home/ubuntu/llvm-project/libcxx/src/CMakeLists.txt:
  Target "cxx_static" requires the language dialect "CXX20" .  But the
  current compiler "GNU" does not support this, or CMake does not know the
  flags to enable it.
```
I have done a quick search on Google but there is no luck. Do you have any suggestions? It seems to me that the issue is related to an experimental feature because I see a warning before the error saying that
```
CMake Warning at /home/ubuntu/llvm-project/libcxx/CMakeLists.txt:415 (message):                                                                                                        
  LIBCXX_ENABLE_STATIC_ABI_LIBRARY is an experimental option
```
Thanks.
</pre>
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