cpython/Include/pymacconfig.h

// This file moves some of the autoconf magic to compile-time when building on
// macOS. This is needed for building 4-way universal binaries and for 64-bit
// universal binaries because the values redefined below aren't configure-time
// constant but only compile-time constant in these scenarios.

#ifndef PY_MACCONFIG_H
#define PY_MACCONFIG_H
#ifdef __APPLE__

#undef ALIGNOF_MAX_ALIGN_T
#undef SIZEOF_LONG
#undef SIZEOF_LONG_DOUBLE
#undef SIZEOF_PTHREAD_T
#undef SIZEOF_SIZE_T
#undef SIZEOF_TIME_T
#undef SIZEOF_VOID_P
#undef SIZEOF__BOOL
#undef SIZEOF_UINTPTR_T
#undef SIZEOF_PTHREAD_T
#undef WORDS_BIGENDIAN
#undef DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754
#undef DOUBLE_IS_BIG_ENDIAN_IEEE754
#undef DOUBLE_IS_LITTLE_ENDIAN_IEEE754
#undef HAVE_GCC_ASM_FOR_X87
#undef HAVE_GCC_ASM_FOR_X64

#undef VA_LIST_IS_ARRAY
#if defined(__LP64__) && defined(__x86_64__)
#define VA_LIST_IS_ARRAY …
#endif

#undef HAVE_LARGEFILE_SUPPORT
#ifndef __LP64__
#define HAVE_LARGEFILE_SUPPORT …
#endif

#undef SIZEOF_LONG
#ifdef __LP64__
#define SIZEOF__BOOL …
#define SIZEOF__BOOL …
#define SIZEOF_LONG …
#define SIZEOF_PTHREAD_T …
#define SIZEOF_SIZE_T …
#define SIZEOF_TIME_T …
#define SIZEOF_VOID_P …
#define SIZEOF_UINTPTR_T …
#define SIZEOF_PTHREAD_T …
#else
#  ifdef __ppc__
#define SIZEOF__BOOL …
#  else
#define SIZEOF__BOOL …
#  endif
#define SIZEOF_LONG …
#define SIZEOF_PTHREAD_T …
#define SIZEOF_SIZE_T …
#define SIZEOF_TIME_T …
#define SIZEOF_VOID_P …
#define SIZEOF_UINTPTR_T …
#define SIZEOF_PTHREAD_T …
#endif

// macOS 10.4 (the first release to support 64-bit code
// at all) only supports 64-bit in the UNIX layer.
// Therefore suppress the toolbox-glue in 64-bit mode.
//
// In 64-bit mode setpgrp always has no arguments, in 32-bit
// mode that depends on the compilation environment
#if defined(__LP64__)
#   undef SETPGRP_HAVE_ARG
#endif

#ifdef __BIG_ENDIAN__
#define WORDS_BIGENDIAN …
#define DOUBLE_IS_BIG_ENDIAN_IEEE754
#else
#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754
#endif

#if defined(__i386__) || defined(__x86_64__)
#define HAVE_GCC_ASM_FOR_X87
#define ALIGNOF_MAX_ALIGN_T …
#define HAVE_GCC_ASM_FOR_X64 …
#define SIZEOF_LONG_DOUBLE …
#else
#define ALIGNOF_MAX_ALIGN_T …
#define SIZEOF_LONG_DOUBLE …
#endif

#endif   // __APPLE__
#endif   // !PY_MACCONFIG_H