visibility_control.hpp

// Copyright (c) 2009, Willow Garage, Inc.
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#ifndef CONTROL_TOOLBOX__VISIBILITY_CONTROL_HPP_
#define CONTROL_TOOLBOX__VISIBILITY_CONTROL_HPP_
 
// This logic was borrowed (then namespaced) from the examples on the gcc wiki:
//     https://gcc.gnu.org/wiki/Visibility
 
#if defined _WIN32 || defined __CYGWIN__
#ifdef __GNUC__
#define CONTROL_TOOLBOX_EXPORT __attribute__((dllexport))
#define CONTROL_TOOLBOX_IMPORT __attribute__((dllimport))
#else
#define CONTROL_TOOLBOX_EXPORT __declspec(dllexport)
#define CONTROL_TOOLBOX_IMPORT __declspec(dllimport)
#endif
#ifdef CONTROL_TOOLBOX_BUILDING_LIBRARY
#define CONTROL_TOOLBOX_PUBLIC CONTROL_TOOLBOX_EXPORT
#else
#define CONTROL_TOOLBOX_PUBLIC CONTROL_TOOLBOX_IMPORT
#endif
#define CONTROL_TOOLBOX_PUBLIC_TYPE CONTROL_TOOLBOX_PUBLIC
#define CONTROL_TOOLBOX_LOCAL
#else
#define CONTROL_TOOLBOX_EXPORT __attribute__((visibility("default")))
#define CONTROL_TOOLBOX_IMPORT
#if __GNUC__ >= 4
#define CONTROL_TOOLBOX_PUBLIC __attribute__((visibility("default")))
#define CONTROL_TOOLBOX_LOCAL __attribute__((visibility("hidden")))
#else
#define CONTROL_TOOLBOX_PUBLIC
#define CONTROL_TOOLBOX_LOCAL
#endif
#define CONTROL_TOOLBOX_PUBLIC_TYPE
#endif
 
#endif  // CONTROL_TOOLBOX__VISIBILITY_CONTROL_HPP_