visibility.hpp

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#ifndef UPnPsdk_INCLUDE_VISIBILITY_HPP
#define UPnPsdk_INCLUDE_VISIBILITY_HPP
// Copyright (C) 2022 GPL 3 and higher by Ingo Höft,  <Ingo@Hoeft-online.de>
// Redistribution only with this Copyright remark. Last modified: 2025-06-12
// C++ visibility support
//-----------------------
// clang-format off
// Generic helper definitions for shared library support
#if defined _WIN32 || defined __CYGWIN__
  #define UPNP_HELPER_DLL_IMPORT __declspec(dllimport)
  #define UPNP_HELPER_DLL_EXPORT __declspec(dllexport)
  #define UPNP_HELPER_DLL_LOCAL
#else
  #if __GNUC__ >= 4
    #define UPNP_HELPER_DLL_IMPORT __attribute__ ((visibility ("default")))
    #define UPNP_HELPER_DLL_EXPORT __attribute__ ((visibility ("default")))
    #define UPNP_HELPER_DLL_LOCAL  __attribute__ ((visibility ("hidden")))
  #else
    #define UPNP_HELPER_DLL_IMPORT
    #define UPNP_HELPER_DLL_EXPORT
    #define UPNP_HELPER_DLL_LOCAL
  #endif
#endif
 
// Now we use the generic helper definitions above to define UPnPsdk_VIS and
// UPnPsdk_LOCAL. UPnPsdk_VIS is used for the public visible symbols. It either
// DLL imports or DLL exports (or does nothing for static build) UPnPsdk_LOCAL
// is used for non-api symbols.
 
#ifdef UPnPsdk_SHARE // defined if UPnPsdk is compiled as a shared library
  #ifdef UPnPsdk_EXPORTS // defined if we are building the UPnPsdk DLL (instead of using it)
    #define UPnPsdk_VIS UPNP_HELPER_DLL_EXPORT
  #else
    #define UPnPsdk_VIS UPNP_HELPER_DLL_IMPORT
  #endif // UPnPsdk_EXPORTS
  #define UPnPsdk_LOCAL UPNP_HELPER_DLL_LOCAL
#else // UPnPsdk_SHARE is not defined: this means UPnPsdk is a static lib.
  #define UPnPsdk_VIS
  #define UPnPsdk_LOCAL
#endif // UPnPsdk_SHARE
 
#if (defined _WIN32 || defined __CYGWIN__) && defined UPnPsdk_SHARE
  #define UPnPsdk_EXTERN __declspec(dllimport) extern
#else
  #define UPnPsdk_EXTERN UPnPsdk_VIS extern
#endif
 
// Its all the same symbol export but only for its different meanings.
#define PUPNP_Api UPnPsdk_VIS // Symbol exports for old pupnp API.
#define UPnPsdk_API UPnPsdk_VIS // Symbol exports for UPnPsdk internal use only.
 
// clang-format on
 
#endif // UPnPsdk_INCLUDE_VISIBILITY_HPP