<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61782>61782</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            llvm-lit config unable to extract target triple
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          gandhi56
      </td>
    </tr>
</table>

<pre>
    My machine runs on M1 Pro with host triple `arm64-apple-darwin22.3.0`. CMake config is the following:

```
cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_TARGETS_TO_BUILD="AMDGPU;X86" ../llvm
```

To reproduce the error:
```
./bin/llvm-lit -v ../clang/test/CodeGenOpenCL/builtins-fp-atomics-gfx90a.cl
```

Output:
```
llvm-lit: /Users/gouenji56/workspace/llvm-project/llvm/utils/lit/lit/llvm/config.py:459: note: using clang: /Users/gouenji56/workspace/llvm-project/build/bin/clang
llvm-lit: /Users/gouenji56/workspace/llvm-project/llvm/utils/lit/lit/llvm/config.py:324: fatal: Could not turn '' into Itanium ABI triple
```

>From my investigation, I found that `config.target_triple = ''` in `class LLVMConfig` which is defined in llvm/utils/lit/lit/llvm/config.py.
</pre>
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