python (3.12.0)

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       1  #ifndef Py_EXPORTS_H
       2  #define Py_EXPORTS_H
       3  
       4  #if defined(_WIN32) || defined(__CYGWIN__)
       5      #if defined(Py_ENABLE_SHARED)
       6          #define Py_IMPORTED_SYMBOL __declspec(dllimport)
       7          #define Py_EXPORTED_SYMBOL __declspec(dllexport)
       8          #define Py_LOCAL_SYMBOL
       9      #else
      10          #define Py_IMPORTED_SYMBOL
      11          #define Py_EXPORTED_SYMBOL
      12          #define Py_LOCAL_SYMBOL
      13      #endif
      14  #else
      15  /*
      16   * If we only ever used gcc >= 5, we could use __has_attribute(visibility)
      17   * as a cross-platform way to determine if visibility is supported. However,
      18   * we may still need to support gcc >= 4, as some Ubuntu LTS and Centos versions
      19   * have 4 < gcc < 5.
      20   */
      21      #ifndef __has_attribute
      22        #define __has_attribute(x) 0  // Compatibility with non-clang compilers.
      23      #endif
      24      #if (defined(__GNUC__) && (__GNUC__ >= 4)) ||\
      25          (defined(__clang__) && __has_attribute(visibility))
      26          #define Py_IMPORTED_SYMBOL __attribute__ ((visibility ("default")))
      27          #define Py_EXPORTED_SYMBOL __attribute__ ((visibility ("default")))
      28          #define Py_LOCAL_SYMBOL  __attribute__ ((visibility ("hidden")))
      29      #else
      30          #define Py_IMPORTED_SYMBOL
      31          #define Py_EXPORTED_SYMBOL
      32          #define Py_LOCAL_SYMBOL
      33      #endif
      34  #endif
      35  
      36  #endif /* Py_EXPORTS_H */