--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancFramework/Sources/Compatibility.h	Wed Jun 10 20:30:34 2020 +0200
@@ -0,0 +1,105 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+//#define Orthanc_Compatibility_h_STR2(x) #x
+//#define Orthanc_Compatibility_h_STR1(x) Orthanc_Compatibility_h_STR2(x)
+
+//#pragma message("__cplusplus = " Orthanc_Compatibility_h_STR1(__cplusplus))
+
+#if (defined _MSC_VER)
+//#  pragma message("_MSC_VER = " Orthanc_Compatibility_h_STR1(_MSC_VER))
+//#  pragma message("_MSVC_LANG = " Orthanc_Compatibility_h_STR1(_MSVC_LANG))
+// The __cplusplus macro cannot be used in Visual C++ < 1914 (VC++ 15.7)
+// However, even in recent versions, __cplusplus will only be correct (that is,
+// correctly defines the supported C++ version) if a special flag is passed to
+// the compiler ("/Zc:__cplusplus")
+// To make this header more robust, we use the _MSVC_LANG equivalent macro.
+
+// please note that not all C++11 features are supported when _MSC_VER == 1600
+// (or higher). This header file can be made for fine-grained, if required, 
+// based on specific _MSC_VER values
+
+#  if _MSC_VER >= 1600
+#    define ORTHANC_Cxx03_DETECTED 0
+#  else
+#    define ORTHANC_Cxx03_DETECTED 1
+#  endif
+
+#else
+// of _MSC_VER is not defined, we assume __cplusplus is correctly defined
+// if __cplusplus is not defined (very old compilers??), then the following
+// test will compare 0 < 201103L and will be true --> safe.
+#  if __cplusplus < 201103L
+#    define ORTHANC_Cxx03_DETECTED 1
+#  else
+#    define ORTHANC_Cxx03_DETECTED 0
+#  endif
+#endif
+
+#if ORTHANC_Cxx03_DETECTED == 1
+//#pragma message("C++ 11 support is not present.")
+
+/**
+ * "std::unique_ptr" was introduced in C++11, and "std::auto_ptr" was
+ * removed in C++17. We emulate "std::auto_ptr" using boost: "The
+ * smart pointer unique_ptr [is] a drop-in replacement for
+ * std::unique_ptr, usable also from C++03 compilers." This is only
+ * available if Boost >= 1.57.0 (from November 2014).
+ * https://www.boost.org/doc/libs/1_57_0/doc/html/move/reference.html#header.boost.move.unique_ptr_hpp
+ **/
+
+#include <boost/move/unique_ptr.hpp>
+
+namespace std
+{
+  template <typename T>
+  class unique_ptr : public boost::movelib::unique_ptr<T>
+  {
+  public:
+    explicit unique_ptr() :
+      boost::movelib::unique_ptr<T>()
+    {
+    }      
+
+    explicit unique_ptr(T* p) :
+      boost::movelib::unique_ptr<T>(p)
+    {
+    }      
+  };
+}
+#else
+//# pragma message("C++ 11 support is present.")
+# include <memory>
+#endif