1// -*- C++ -*-
 2//===----------------------------------------------------------------------===//
 3//
 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 5// See https://llvm.org/LICENSE.txt for license information.
 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 7//
 8//===----------------------------------------------------------------------===//
 9
10#ifndef _LIBCPP___CONFIGURATION_PLATFORM_H
11#define _LIBCPP___CONFIGURATION_PLATFORM_H
12
13/* zig patch: instead of including __config_site, zig adds -D flags when compiling */
14
15#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
16#  pragma GCC system_header
17#endif
18
19#if defined(__ELF__)
20#  define _LIBCPP_OBJECT_FORMAT_ELF 1
21#elif defined(__MACH__)
22#  define _LIBCPP_OBJECT_FORMAT_MACHO 1
23#elif defined(_WIN32)
24#  define _LIBCPP_OBJECT_FORMAT_COFF 1
25#elif defined(__wasm__)
26#  define _LIBCPP_OBJECT_FORMAT_WASM 1
27#elif defined(_AIX)
28#  define _LIBCPP_OBJECT_FORMAT_XCOFF 1
29#else
30// ... add new file formats here ...
31#endif
32
33// Need to detect which libc we're using if we're on Linux.
34#if defined(__linux__) || defined(__AMDGPU__) || defined(__NVPTX__)
35#  if __has_include(<features.h>)
36#    include <features.h>
37#    if defined(__GLIBC_PREREQ)
38#      define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b)
39#    else
40#      define _LIBCPP_GLIBC_PREREQ(a, b) 0
41#    endif // defined(__GLIBC_PREREQ)
42#  endif
43#endif
44
45// This is required in order for _NEWLIB_VERSION to be defined in places where we use it.
46// TODO: We shouldn't be including arbitrarily-named headers from libc++ since this can break valid
47//       user code. Move code paths that need _NEWLIB_VERSION to another customization mechanism.
48#if __has_include(<picolibc.h>)
49#  include <picolibc.h>
50#endif
51
52#ifndef __BYTE_ORDER__
53#  error                                                                                                               \
54      "Your compiler doesn't seem to define __BYTE_ORDER__, which is required by libc++ to know the endianness of your target platform"
55#endif
56
57#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
58#  define _LIBCPP_LITTLE_ENDIAN
59#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
60#  define _LIBCPP_BIG_ENDIAN
61#endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
62
63#endif // _LIBCPP___CONFIGURATION_PLATFORM_H