library.h

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/*
** Copyright 2014-2016 The Earlham Institute
** 
** 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.
*/
 
#ifndef LIBRARY_H
#define LIBRARY_H
 
#ifdef __cplusplus
  extern "C" {
#endif
 
/* Generic helper definitions for shared library support */
 
#if defined WINDOWS || defined __CYGWIN__
  #define LIB_HELPER_SYMBOL_IMPORT __declspec(dllimport)
  #define LIB_HELPER_SYMBOL_EXPORT __declspec(dllexport)
  #define LIB_HELPER_SYMBOL_LOCAL
#elif __GNUC__ >= 4
  #define LIB_HELPER_SYMBOL_IMPORT __attribute__ ((visibility("default")))
  #define LIB_HELPER_SYMBOL_EXPORT __attribute__ ((visibility("default")))
  #define LIB_HELPER_SYMBOL_LOCAL  __attribute__ ((visibility("hidden")))
#else
  #define LIB_HELPER_SYMBOL_IMPORT
  #define LIB_HELPER_SYMBOL_EXPORT
  #define LIB_HELPER_SYMBOL_LOCAL
  #define LIB_HELPER_SYMBOL_CONSTANT
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif  /* #ifndef LIBRARY_H */