> For the complete documentation index, see [llms.txt](https://shiva.gitbook.io/project/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://shiva.gitbook.io/project/shiva/modules/shiva-filesystem.md).

# shiva::filesystem

This module simply makes a **namespace alias** and some preprocessing mandatory to use std::filesystem. This module is represented by a cmake interface library that facilitates its handling through other modules.

{% code title="filesystem.hpp" %}

```cpp
#if __has_include(<experimental/filesystem>)
    #include <experimental/filesystem>
    namespace shiva
    {
        namespace fs = std::experimental::filesystem;
    }
#elif __has_include(<filesystem>)
    #include <filesystem>
    namespace shiva
    {
      namespace fs = std::filesystem;
    }
#endif
```

{% endcode %}

To manage it from side of cmake you have to do as follow:

```
if (LINUX)
    target_link_libraries(filesystem INTERFACE stdc++fs)
endif(LINUX)

if(APPLE)
    target_link_libraries(filesystem INTERFACE c++experimental)
endif(APPLE)
```