From 86399e49398cc9e8028e280eee3e89992ab3fd11 Mon Sep 17 00:00:00 2001
From: KWSys Upstream <kwrobot@kitware.com>
Date: Fri, 15 Dec 2017 10:48:01 -0500
Subject: [PATCH] KWSys 2017-12-15 (8f755ee9)

Code extracted from:

    https://gitlab.kitware.com/utils/kwsys.git

at commit 8f755ee93451e580aa7b5ed6cee9e6c5da81e7d0 (master).

Upstream Shortlog
-----------------

Volo Zyko (1):
      9f6cd407 SystemTools: Fix removing of soft links to directories on Windows.
---
 SystemTools.cxx | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/SystemTools.cxx b/SystemTools.cxx
index 649f30bd3c..f5473628e7 100644
--- a/SystemTools.cxx
+++ b/SystemTools.cxx
@@ -2509,6 +2509,14 @@ bool SystemTools::RemoveFile(const std::string& source)
   if (IsJunction(ws) && DeleteJunction(ws)) {
     return true;
   }
+  const DWORD DIRECTORY_SOFT_LINK_ATTRS =
+    FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT;
+  DWORD attrs = GetFileAttributesW(ws.c_str());
+  if (attrs != INVALID_FILE_ATTRIBUTES &&
+      (attrs & DIRECTORY_SOFT_LINK_ATTRS) == DIRECTORY_SOFT_LINK_ATTRS &&
+      RemoveDirectoryW(ws.c_str())) {
+    return true;
+  }
   if (DeleteFileW(ws.c_str()) || GetLastError() == ERROR_FILE_NOT_FOUND ||
       GetLastError() == ERROR_PATH_NOT_FOUND) {
     return true;