Vinay Sajip | 0b60f64 | 2019-10-15 08:26:12 +0100 | [diff] [blame^] | 1 | #ifndef Py_EXPORTS_H |
| 2 | #define Py_EXPORTS_H |
| 3 | |
| 4 | #if defined(_WIN32) || defined(__CYGWIN__) |
| 5 | #define Py_IMPORTED_SYMBOL __declspec(dllimport) |
| 6 | #define Py_EXPORTED_SYMBOL __declspec(dllexport) |
| 7 | #define Py_LOCAL_SYMBOL |
| 8 | #else |
| 9 | /* |
| 10 | * If we only ever used gcc >= 5, we could use __has_attribute(visibility) |
| 11 | * as a cross-platform way to determine if visibility is supported. However, |
| 12 | * we may still need to support gcc >= 4, as some Ubuntu LTS and Centos versions |
| 13 | * have 4 < gcc < 5. |
| 14 | */ |
| 15 | #ifndef __has_attribute |
| 16 | #define __has_attribute(x) 0 // Compatibility with non-clang compilers. |
| 17 | #endif |
| 18 | #if (defined(__GNUC__) && (__GNUC__ >= 4)) ||\ |
| 19 | (defined(__clang__) && __has_attribute(visibility)) |
| 20 | #define Py_IMPORTED_SYMBOL __attribute__ ((visibility ("default"))) |
| 21 | #define Py_EXPORTED_SYMBOL __attribute__ ((visibility ("default"))) |
| 22 | #define Py_LOCAL_SYMBOL __attribute__ ((visibility ("hidden"))) |
| 23 | #else |
| 24 | #define Py_IMPORTED_SYMBOL |
| 25 | #define Py_EXPORTED_SYMBOL |
| 26 | #define Py_LOCAL_SYMBOL |
| 27 | #endif |
| 28 | #endif |
| 29 | |
| 30 | #endif /* Py_EXPORTS_H */ |