// file      : butl/export -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license   : MIT; see accompanying LICENSE file

#ifndef BUTL_EXPORT
#define BUTL_EXPORT

// Normally we don't export class templates (but do complete specializations),
// inline functions, and classes without any member functions. But in the end
// it's all trial and error to figure out what VC needs exported.

#if defined(LIBBUTL_STATIC)         // Using static.
#  define LIBBUTL_EXPORT
#elif defined(LIBBUTL_STATIC_BUILD) // Building static.
#  define LIBBUTL_EXPORT
#elif defined(LIBBUTL_SHARED)       // Using shared.
#  ifdef _WIN32
#    define LIBBUTL_EXPORT __declspec(dllimport)
#  else
#    define LIBBUTL_EXPORT
#  endif
#elif defined(LIBBUTL_SHARED_BUILD) // Building shared.
#  ifdef _WIN32
#    define LIBBUTL_EXPORT __declspec(dllexport)
#  else
#    define LIBBUTL_EXPORT
#  endif
#else
// If none of the above macros are defined, then we assume we are being using
// by some third-party build system that cannot/doesn't signal the library
// type. Note that this fallback works for both static and shared but in case
// of shared will be sub-optimal compared to having dllimport.
//
#  define LIBBUTL_EXPORT            // Using static or shared.
#endif

#endif // BUTL_EXPORT