/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkCompiler.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/

#ifndef vtkCompiler_h
#define vtkCompiler_h

/*--------------------------------------------------------------------------*/
/* Compiler backend                                                         */
/* Be careful modifying this -- order is important.                         */
#if defined(_MSC_VER)
/* MSVC 2015+ can use a clang frontend, so we want to label it only as MSVC
 * and not MSVC and clang. */
#define VTK_COMPILER_MSVC

#elif defined(__INTEL_COMPILER)
/* Intel 14+ on OSX uses a clang frontend, so again we want to label them as
 * intel only, and not intel and clang. */
#define VTK_COMPILER_ICC

#elif defined(__PGI)
/* PGI reports as GNUC as it generates the same ABI, so we need to check for
 * it before gcc. */
#define VTK_COMPILER_PGI

#elif defined(__clang__)
/* Check for clang before GCC, as clang says it is GNUC since it has ABI
 * compliance and supports many of the same extensions. */
#define VTK_COMPILER_CLANG

#elif defined(__GNUC__)
/* Several compilers pretend to be GCC but have minor differences. To
 * compensate for that, we checked for those compilers first above. */
#define VTK_COMPILER_GCC
#define VTK_COMPILER_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#endif

/** extern template declarations for C++11. Only MinGW32 doesn't support this
 */
#if !defined(__MINGW32__)
#define VTK_USE_EXTERN_TEMPLATE
#endif

#endif
