如何在Linux上获得规范化(规范化)文件路径“即使文件系统上不存在文件路径”?(在C程序中))

I have researched a lot on this topic but could not get anything substantial. By normalize/canonicalize I mean to remove all the "..", ".", multiple slashes etc from a file path and get a simple absolute path. e.g. I have researched a lot on this topic but could