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gh-141671: PyMODINIT_FUNC: apply __declspec(dllexport) on Windows (GH-141672)

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Petr Viktorin 2026-01-07 13:09:48 +01:00 committed by GitHub
parent b866a1c73f
commit 8565ddd288
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GPG Key ID: B5690EEEBB952194
2 changed files with 18 additions and 15 deletions
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31
Include/exports.h
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@ -35,6 +35,12 @@
#define Py_EXPORTED_SYMBOL
#define Py_LOCAL_SYMBOL
#endif
/* module init functions outside the core must be exported */
#if defined(Py_BUILD_CORE)
#define _PyINIT_EXPORTED_SYMBOL Py_EXPORTED_SYMBOL
#else
#define _PyINIT_EXPORTED_SYMBOL __declspec(dllexport)
#endif
#else
/*
* If we only ever used gcc >= 5, we could use __has_attribute(visibility)
@ -52,19 +58,16 @@
#define Py_EXPORTED_SYMBOL
#define Py_LOCAL_SYMBOL
#endif
#define _PyINIT_EXPORTED_SYMBOL Py_EXPORTED_SYMBOL
#endif
/* only get special linkage if built as shared or platform is Cygwin */
#if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__)
# if defined(HAVE_DECLSPEC_DLL)
# if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
# define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
# define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
/* module init functions inside the core need no external linkage */
/* except for Cygwin to handle embedding */
# if defined(__CYGWIN__)
# define _PyINIT_FUNC_DECLSPEC Py_EXPORTED_SYMBOL
# else /* __CYGWIN__ */
# if !defined(__CYGWIN__)
# define _PyINIT_FUNC_DECLSPEC
# endif /* __CYGWIN__ */
# else /* Py_BUILD_CORE */
@ -77,12 +80,6 @@
# define PyAPI_FUNC(RTYPE) Py_IMPORTED_SYMBOL RTYPE
# endif /* !__CYGWIN__ */
# define PyAPI_DATA(RTYPE) extern Py_IMPORTED_SYMBOL RTYPE
/* module init functions outside the core must be exported */
# if defined(__cplusplus)
# define _PyINIT_FUNC_DECLSPEC extern "C" Py_EXPORTED_SYMBOL
# else /* __cplusplus */
# define _PyINIT_FUNC_DECLSPEC Py_EXPORTED_SYMBOL
# endif /* __cplusplus */
# endif /* Py_BUILD_CORE */
# endif /* HAVE_DECLSPEC_DLL */
#endif /* Py_ENABLE_SHARED */
@ -96,13 +93,17 @@
#endif
#ifndef _PyINIT_FUNC_DECLSPEC
# if defined(__cplusplus)
# define _PyINIT_FUNC_DECLSPEC extern "C" Py_EXPORTED_SYMBOL
# define _PyINIT_FUNC_DECLSPEC extern "C" _PyINIT_EXPORTED_SYMBOL
# else /* __cplusplus */
# define _PyINIT_FUNC_DECLSPEC Py_EXPORTED_SYMBOL
# define _PyINIT_FUNC_DECLSPEC _PyINIT_EXPORTED_SYMBOL
# endif /* __cplusplus */
#endif
#define PyMODINIT_FUNC _PyINIT_FUNC_DECLSPEC PyObject*
#define PyMODEXPORT_FUNC _PyINIT_FUNC_DECLSPEC PyModuleDef_Slot*
#ifndef PyMODINIT_FUNC
#define PyMODINIT_FUNC _PyINIT_FUNC_DECLSPEC PyObject*
#endif
#ifndef PyMODEXPORT_FUNC
#define PyMODEXPORT_FUNC _PyINIT_FUNC_DECLSPEC PyModuleDef_Slot*
#endif
#endif /* Py_EXPORTS_H */

2
Misc/NEWS.d/next/C_API/2025-11-17-17-46-16.gh-issue-141671.cVXNW5.rst Normal file
View File

@ -0,0 +1,2 @@
:c:macro:`PyMODINIT_FUNC` (and the new :c:macro:`PyMODEXPORT_FUNC`) now adds
a linkage declaration (``__declspec(dllexport)``) on Windows.