<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/71732>71732</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-tidy: llvm-header-guard adds absolute path to header guard
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang-tidy
      </td>
    </tr>

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

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

<pre>
    I encountered an issue with the `llvm-header-guard` check when running Clang-Tidy through the Visual Studio extension - Clang Power Tools. It refactors header guards using absolute paths:
```cpp
#ifndef C:_USERS_VADYM_SOURCE_REPOS_PET_PROJECT_MATH_LIBRARY_SRC_LIB_OPTIONS_OPTIONS_H
#define C:_USERS_VADYM_SOURCE_REPOS_PET_PROJECT_MATH_LIBRARY_SRC_LIB_OPTIONS_OPTIONS_H
```
This behavior isn't ideal. I'm looking for a guard style that reflects the project structure, such as:
```cpp
#ifndef MATH_LIBRARY_OPTIONS_H
#define MATH_LIBRARY_OPTIONS_H
```
, where MATH_LIBRARY_ is project name and OPTIONS_H is file name (it's in ideal case, but at least the header guard should be file name - OPTIONS_H). Is there a way to customize `llvm-header-guard` to generate project-based, rather than absolute path-based, guards?



</pre>
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