DLLInfo.h

#pragma once
#ifdef _MSC_VER
#   undef OPEN_CV_INTERFACE_API

 /* Define 'NDEVR_BASE_BUILD_DLL_EXPORT' to build a DLL of the library */
#   ifdef OPEN_CV_INTERFACE_BUILD_DLL_EXPORT
#       define OPEN_CV_INTERFACE_API __declspec(dllexport)
#       define OPEN_CV_INTERFACE_T_API
#       pragma warning (disable : 4251)
#       pragma warning (disable : 4661)
#       pragma warning (disable : 4251)
#       pragma warning (disable : 26812)
    /* Define 'NDEVR_BASE_DLL' before including NDEVR to link to NDEVR BASE in
     * an external DLL under Windows. Default is static linkage. */
#   elif (defined OPEN_CV_INTERFACE_DLL)
#       define OPEN_CV_INTERFACE_API __declspec(dllimport)
#       define OPEN_CV_INTERFACE_T_API
#       pragma warning (disable : 4661)
#       pragma warning (disable : 4251)
#       pragma warning (disable : 26812)
#   else
#       define OPEN_CV_INTERFACE_API
#       define OPEN_CV_INTERFACE_T_API
#   endif
 
#elif QT_BUILD
#include <QtCore/QtGlobal>
#   ifdef OPEN_CV_INTERFACE_BUILD_DLL_EXPORT
#       define OPEN_CV_INTERFACE_API Q_DECL_EXPORT
#       define OPEN_CV_INTERFACE_T_API
 /* Define 'NDEVR_BASE_DLL' before including NDEVR to link to NDEVR BASE in
  * an external DLL under Windows. Default is static linkage. */
#   elif (defined NDEVR_BASE_DLL)
#       define OPEN_CV_INTERFACE_API Q_DECL_IMPORT
#       define OPEN_CV_INTERFACE_T_API
#   else
#       define OPEN_CV_INTERFACE_API
#       define OPEN_CV_INTERFACE_T_API
#   endif
#else
#   define OPEN_CV_INTERFACE_API /*__attribute__ ((visibility("default")))*/
#   define OPEN_CV_INTERFACE_T_API extern
#endif // (defined _MSC_VER)