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156ab87500
See: * https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319 * https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701 We're dropping support for C++03 for Zig due to the first change; it would be insane to ship 1018 duplicate header files just for this outdated use case. As a result of the second change, I had to bring in a subset of the headers from llvm-libc since libc++ now depends on these. Hopefully we can continue to get away with not copying the entirety of llvm-libc.
57 lines
1.9 KiB
C++
Vendored
57 lines
1.9 KiB
C++
Vendored
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___CONFIGURATION_PLATFORM_H
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#define _LIBCPP___CONFIGURATION_PLATFORM_H
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/* zig patch: instead of including __config_site, zig adds -D flags when compiling */
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#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
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# pragma GCC system_header
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#endif
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#if defined(__ELF__)
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# define _LIBCPP_OBJECT_FORMAT_ELF 1
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#elif defined(__MACH__)
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# define _LIBCPP_OBJECT_FORMAT_MACHO 1
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#elif defined(_WIN32)
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# define _LIBCPP_OBJECT_FORMAT_COFF 1
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#elif defined(__wasm__)
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# define _LIBCPP_OBJECT_FORMAT_WASM 1
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#elif defined(_AIX)
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# define _LIBCPP_OBJECT_FORMAT_XCOFF 1
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#else
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// ... add new file formats here ...
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#endif
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// Need to detect which libc we're using if we're on Linux.
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#if defined(__linux__) || defined(__AMDGPU__) || defined(__NVPTX__)
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# if __has_include(<features.h>)
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# include <features.h>
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# if defined(__GLIBC_PREREQ)
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# define _LIBCPP_GLIBC_PREREQ(a, b) __GLIBC_PREREQ(a, b)
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# else
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# define _LIBCPP_GLIBC_PREREQ(a, b) 0
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# endif // defined(__GLIBC_PREREQ)
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# endif
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#endif
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#ifndef __BYTE_ORDER__
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# error \
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"Your compiler doesn't seem to define __BYTE_ORDER__, which is required by libc++ to know the endianness of your target platform"
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#endif
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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# define _LIBCPP_LITTLE_ENDIAN
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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# define _LIBCPP_BIG_ENDIAN
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#endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#endif // _LIBCPP___CONFIGURATION_PLATFORM_H
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