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Add visibility control to all packages
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tesseract/tesseract/include/tesseract/visibility_control.h
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// Copyright 2015 Open Source Robotics Foundation, Inc. | ||
// | ||
// Licensed under the Apache License, Version 2.0 (the "License"); | ||
// you may not use this file except in compliance with the License. | ||
// You may obtain a copy of the License at | ||
// | ||
// http://www.apache.org/licenses/LICENSE-2.0 | ||
// | ||
// Unless required by applicable law or agreed to in writing, software | ||
// distributed under the License is distributed on an "AS IS" BASIS, | ||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
// See the License for the specific language governing permissions and | ||
// limitations under the License. | ||
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||
/* This header must be included by all descartes headers which declare symbols | ||
* which are defined in the descartes library. When not building the descartes | ||
* library, i.e. when using the headers in other package's code, the contents | ||
* of this header change the visibility of certain symbols which the descartes | ||
* library cannot have, but the consuming code must have inorder to link. | ||
*/ | ||
#ifndef TESSERACT_VISIBILITY_CONTROL_H | ||
#define TESSERACT_VISIBILITY_CONTROL_H | ||
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// This logic was borrowed (then namespaced) from the examples on the gcc wiki: | ||
// https://gcc.gnu.org/wiki/Visibility | ||
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// clang-format off | ||
#if defined _WIN32 || defined __CYGWIN__ | ||
#ifdef __GNUC__ | ||
#define TESSERACT_EXPORT __attribute__ ((dllexport)) | ||
#define TESSERACT_IMPORT __attribute__ ((dllimport)) | ||
#else | ||
#define TESSERACT_EXPORT __declspec(dllexport) | ||
#define TESSERACT_IMPORT __declspec(dllimport) | ||
#endif | ||
#ifndef TESSERACT_STATIC_LIBRARY | ||
#ifdef TESSERACT_LIBRARY_SHARED | ||
#define TESSERACT_PUBLIC TESSERACT_EXPORT | ||
#else | ||
#define TESSERACT_PUBLIC TESSERACT_IMPORT | ||
#endif | ||
#else | ||
#define TESSERACT_PUBLIC | ||
#endif | ||
#define TESSERACT_PUBLIC_TYPE TESSERACT_PUBLIC | ||
#define TESSERACT_LOCAL | ||
#else | ||
#define TESSERACT_EXPORT __attribute__ ((visibility("default"))) | ||
#define TESSERACT_IMPORT | ||
#if __GNUC__ >= 4 | ||
#define TESSERACT_PUBLIC __attribute__ ((visibility("default"))) | ||
#define TESSERACT_LOCAL __attribute__ ((visibility("hidden"))) | ||
#else | ||
#define TESSERACT_PUBLIC | ||
#define TESSERACT_LOCAL | ||
#endif | ||
#define TESSERACT_PUBLIC_TYPE | ||
#endif | ||
// clang-format on | ||
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#endif // TESSERACT_VISIBILITY_CONTROL_H |
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