| 1 | #ifndef Py_EXPORTS_H |
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| 2 | #define Py_EXPORTS_H |
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| 3 | |
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| 4 | #if defined(_WIN32) || defined(__CYGWIN__) |
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| 5 | #define Py_IMPORTED_SYMBOL __declspec(dllimport) |
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| 6 | #define Py_EXPORTED_SYMBOL __declspec(dllexport) |
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| 7 | #define Py_LOCAL_SYMBOL |
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| 8 | #else |
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| 9 | /* |
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| 10 | * If we only ever used gcc >= 5, we could use __has_attribute(visibility) |
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| 11 | * as a cross-platform way to determine if visibility is supported. However, |
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| 12 | * we may still need to support gcc >= 4, as some Ubuntu LTS and Centos versions |
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| 13 | * have 4 < gcc < 5. |
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| 14 | */ |
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| 15 | #ifndef __has_attribute |
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| 16 | #define __has_attribute(x) 0 // Compatibility with non-clang compilers. |
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| 17 | #endif |
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| 18 | #if (defined(__GNUC__) && (__GNUC__ >= 4)) ||\ |
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| 19 | (defined(__clang__) && __has_attribute(visibility)) |
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| 20 | #define Py_IMPORTED_SYMBOL __attribute__ ((visibility ("default"))) |
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| 21 | #define Py_EXPORTED_SYMBOL __attribute__ ((visibility ("default"))) |
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| 22 | #define Py_LOCAL_SYMBOL __attribute__ ((visibility ("hidden"))) |
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| 23 | #else |
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| 24 | #define Py_IMPORTED_SYMBOL |
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| 25 | #define Py_EXPORTED_SYMBOL |
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| 26 | #define Py_LOCAL_SYMBOL |
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| 27 | #endif |
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| 28 | #endif |
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| 29 | |
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| 30 | #endif /* Py_EXPORTS_H */ |
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| 31 | |
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