external_test.hpp

#pragma once

/*
#ifdef BUILDING_DLL
	//#define EXPORT __declspec(EXPORT)
	#define EXPORT __attribute__ ((dllexport))
#else
	//#define EXPORT __declspec(dllimport)
	#define EXPORT __attribute__ ((dllimport))
#endif
*/

#if defined _WIN32 || defined __CYGWIN__
  #ifdef BUILDING_DLL
    #ifdef __GNUC__
      #define DLL_PUBLIC __attribute__ ((dllexport))
    #else
      #define DLL_PUBLIC __declspec(dllexport) // Note: actually gcc seems to also supports this syntax.
    #endif
  #else
    #ifdef __GNUC__
      #define DLL_PUBLIC __attribute__ ((dllimport))
    #else
      #define DLL_PUBLIC __declspec(dllimport) // Note: actually gcc seems to also supports this syntax.
    #endif
  #endif
  #define DLL_LOCAL
#else
  #if __GNUC__ >= 4
    #define DLL_PUBLIC __attribute__ ((visibility ("default")))
    #define DLL_LOCAL  __attribute__ ((visibility ("hidden")))
  #else
    #define DLL_PUBLIC
    #define DLL_LOCAL
  #endif
#endif

//#define EXPORT __declspec(EXPORT)

__attribute__ ((visibility ("default"))) extern int test_var;