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The C and C++ Include Header Files

cat -n /usr/include/python3.14/exports.h

     1	#ifndef Py_EXPORTS_H
     2	#define Py_EXPORTS_H
     3	
     4	/* Declarations for symbol visibility.
     5	
     6	  PyAPI_FUNC(type): Declares a public Python API function and return type
     7	  PyAPI_DATA(type): Declares public Python data and its type
     8	  PyMODINIT_FUNC:   A Python module init function.  If these functions are
     9	                    inside the Python core, they are private to the core.
    10	                    If in an extension module, it may be declared with
    11	                    external linkage depending on the platform.
    12	
    13	  As a number of platforms support/require "__declspec(dllimport/dllexport)",
    14	  we support a HAVE_DECLSPEC_DLL macro to save duplication.
    15	*/
    16	
    17	/*
    18	  All windows ports, except cygwin, are handled in PC/pyconfig.h.
    19	
    20	  Cygwin is the only other autoconf platform requiring special
    21	  linkage handling and it uses __declspec().
    22	*/
    23	#if defined(__CYGWIN__)
    24	#       define HAVE_DECLSPEC_DLL
    25	#endif
    26	
    27	#if defined(_WIN32) || defined(__CYGWIN__)
    28	    #if defined(Py_ENABLE_SHARED)
    29	        #define Py_IMPORTED_SYMBOL __declspec(dllimport)
    30	        #define Py_EXPORTED_SYMBOL __declspec(dllexport)
    31	        #define Py_LOCAL_SYMBOL
    32	    #else
    33	        #define Py_IMPORTED_SYMBOL
    34	        #define Py_EXPORTED_SYMBOL
    35	        #define Py_LOCAL_SYMBOL
    36	    #endif
    37	#else
    38	/*
    39	 * If we only ever used gcc >= 5, we could use __has_attribute(visibility)
    40	 * as a cross-platform way to determine if visibility is supported. However,
    41	 * we may still need to support gcc >= 4, as some Ubuntu LTS and Centos versions
    42	 * have 4 < gcc < 5.
    43	 */
    44	    #if (defined(__GNUC__) && (__GNUC__ >= 4)) ||\
    45	        (defined(__clang__) && _Py__has_attribute(visibility))
    46	        #define Py_IMPORTED_SYMBOL __attribute__ ((visibility ("default")))
    47	        #define Py_EXPORTED_SYMBOL __attribute__ ((visibility ("default")))
    48	        #define Py_LOCAL_SYMBOL  __attribute__ ((visibility ("hidden")))
    49	    #else
    50	        #define Py_IMPORTED_SYMBOL
    51	        #define Py_EXPORTED_SYMBOL
    52	        #define Py_LOCAL_SYMBOL
    53	    #endif
    54	#endif
    55	
    56	/* only get special linkage if built as shared or platform is Cygwin */
    57	#if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__)
    58	#       if defined(HAVE_DECLSPEC_DLL)
    59	#               if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
    60	#                       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
    61	#                       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
    62	        /* module init functions inside the core need no external linkage */
    63	        /* except for Cygwin to handle embedding */
    64	#                       if defined(__CYGWIN__)
    65	#                               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
    66	#                       else /* __CYGWIN__ */
    67	#                               define PyMODINIT_FUNC PyObject*
    68	#                       endif /* __CYGWIN__ */
    69	#               else /* Py_BUILD_CORE */
    70	        /* Building an extension module, or an embedded situation */
    71	        /* public Python functions and data are imported */
    72	        /* Under Cygwin, auto-import functions to prevent compilation */
    73	        /* failures similar to those described at the bottom of 4.1: */
    74	        /* http://docs.python.org/extending/windows.html#a-cookbook-approach */
    75	#                       if !defined(__CYGWIN__)
    76	#                               define PyAPI_FUNC(RTYPE) Py_IMPORTED_SYMBOL RTYPE
    77	#                       endif /* !__CYGWIN__ */
    78	#                       define PyAPI_DATA(RTYPE) extern Py_IMPORTED_SYMBOL RTYPE
    79	        /* module init functions outside the core must be exported */
    80	#                       if defined(__cplusplus)
    81	#                               define PyMODINIT_FUNC extern "C" Py_EXPORTED_SYMBOL PyObject*
    82	#                       else /* __cplusplus */
    83	#                               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
    84	#                       endif /* __cplusplus */
    85	#               endif /* Py_BUILD_CORE */
    86	#       endif /* HAVE_DECLSPEC_DLL */
    87	#endif /* Py_ENABLE_SHARED */
    88	
    89	/* If no external linkage macros defined by now, create defaults */
    90	#ifndef PyAPI_FUNC
    91	#       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
    92	#endif
    93	#ifndef PyAPI_DATA
    94	#       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
    95	#endif
    96	#ifndef PyMODINIT_FUNC
    97	#       if defined(__cplusplus)
    98	#               define PyMODINIT_FUNC extern "C" Py_EXPORTED_SYMBOL PyObject*
    99	#       else /* __cplusplus */
   100	#               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
   101	#       endif /* __cplusplus */
   102	#endif
   103	
   104	
   105	#endif /* Py_EXPORTS_H */