57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
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// Copyright 2019 Open Source Robotics Foundation, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/* This header must be included by all rclcpp headers which declare symbols
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* which are defined in the rclcpp library. When not building the rclcpp
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* library, i.e. when using the headers in other package's code, the contents
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* of this header change the visibility of certain symbols which the rclcpp
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* library cannot have, but the consuming code must have inorder to link.
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*/
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#ifndef OPENROBOTICS_DARKNET_ROS__VISIBILITY_HPP_
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#define OPENROBOTICS_DARKNET_ROS__VISIBILITY_HPP_
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// This logic was borrowed (then namespaced) from the examples on the gcc wiki:
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// https://gcc.gnu.org/wiki/Visibility
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#if defined _WIN32 || defined __CYGWIN__
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#ifdef __GNUC__
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#define DARKNET_ROS_EXPORT __attribute__ ((dllexport))
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#define DARKNET_ROS_IMPORT __attribute__ ((dllimport))
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#else
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#define DARKNET_ROS_EXPORT __declspec(dllexport)
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#define DARKNET_ROS_IMPORT __declspec(dllimport)
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#endif
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#ifdef DARKNET_ROS_BUILDING_LIBRARY
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#define DARKNET_ROS_PUBLIC DARKNET_ROS_EXPORT
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#else
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#define DARKNET_ROS_PUBLIC DARKNET_ROS_IMPORT
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#endif
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#define DARKNET_ROS_PUBLIC_TYPE DARKNET_ROS_PUBLIC
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#define DARKNET_ROS_LOCAL
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#else
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#define DARKNET_ROS_EXPORT __attribute__ ((visibility("default")))
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#define DARKNET_ROS_IMPORT
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#if __GNUC__ >= 4
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#define DARKNET_ROS_PUBLIC __attribute__ ((visibility("default")))
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#define DARKNET_ROS_LOCAL __attribute__ ((visibility("hidden")))
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#else
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#define DARKNET_ROS_PUBLIC
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#define DARKNET_ROS_LOCAL
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#endif
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#define DARKNET_ROS_PUBLIC_TYPE
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#endif
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#endif // OPENROBOTICS_DARKNET_ROS__VISIBILITY_HPP_
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