| 1 | /* Copyright (C) 1999-2007 Henry Cejtin, Matthew Fluet, Suresh |
| 2 | * Jagannathan, and Stephen Weeks. |
| 3 | * Copyright (C) 1997-2000 NEC Research Institute. |
| 4 | * |
| 5 | * MLton is released under a BSD-style license. |
| 6 | * See the file MLton-LICENSE for details. |
| 7 | */ |
| 8 | |
| 9 | #ifndef _MLTON_EXPORT_H_ |
| 10 | #define _MLTON_EXPORT_H_ |
| 11 | |
| 12 | /* ------------------------------------------------- */ |
| 13 | /* Symbols */ |
| 14 | /* ------------------------------------------------- */ |
| 15 | |
| 16 | /* An external symbol is something not defined by the module |
| 17 | * (executable or library) being built. Rather, it is provided |
| 18 | * from a library dependency (dll, dylib, or shared object). |
| 19 | * |
| 20 | * A public symbol is defined in this module as being available |
| 21 | * to users outside of this module. If building a library, this |
| 22 | * means the symbol will be part of the public interface. |
| 23 | * |
| 24 | * A private symbol is defined within this module, but will not |
| 25 | * be made available outside of it. This is typically used for |
| 26 | * internal implementation details that should not be accessible. |
| 27 | */ |
| 28 | |
| 29 | #if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__) |
| 30 | #define EXTERNAL __declspec(dllimport) |
| 31 | #define PUBLIC __declspec(dllexport) |
| 32 | #define PRIVATE |
| 33 | #else |
| 34 | #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) |
| 35 | #define EXTERNAL __attribute__((visibility("default"))) |
| 36 | #define PUBLIC __attribute__((visibility("default"))) |
| 37 | #define PRIVATE __attribute__((visibility("hidden"))) |
| 38 | #else |
| 39 | #define EXTERNAL |
| 40 | #define PUBLIC |
| 41 | #define PRIVATE |
| 42 | #endif |
| 43 | #endif |
| 44 | |
| 45 | #endif /* _MLTON_EXPORT_H_ */ |