From: Samuel Thibault <samuel.thibault@gnu.org>

Date: Wed, 28 Sep 2022 17:50:54 +0200

Subject: Fix build on GNU/Hurd

Forwarded: https://github.com/doxygen/doxygen/pull/9514

---

Index: doxygen/filesystem/filesystem.hpp

===================================================================

--- doxygen.orig/filesystem/filesystem.hpp

+++ doxygen/filesystem/filesystem.hpp

@@ -4081,6 +4081,13 @@ GHC_INLINE path current_path(std::error_

         return path();

     }

     return path(std::wstring(buffer.get()), path::native_format);

+#elif defined(__GLIBC__)

+    std::unique_ptr<char, decltype(&std::free)> buffer { ::getcwd(NULL, 0), std::free };

+    if (buffer == nullptr) {

+        ec = detail::make_system_error();

+        return path();

+    }

+    return path(buffer.get());

 #else

     size_t pathlen = static_cast<size_t>(std::max(int(::pathconf(".", _PC_PATH_MAX)), int(PATH_MAX)));

     std::unique_ptr<char[]> buffer(new char[pathlen + 1]);