quick & dirty site config for using some header-only parts of libcxx in llvm-mos

__config_site

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP___CONFIG_SITE
#define _LIBCPP___CONFIG_SITE

//#cmakedefine _LIBCPP_ABI_VERSION @_LIBCPP_ABI_VERSION@
//#cmakedefine _LIBCPP_ABI_NAMESPACE @_LIBCPP_ABI_NAMESPACE@
//#cmakedefine _LIBCPP_ABI_FORCE_ITANIUM
//#cmakedefine _LIBCPP_ABI_FORCE_MICROSOFT
#define _LIBCPP_HAS_NO_THREADS
#define _LIBCPP_HAS_NO_MONOTONIC_CLOCK
//#cmakedefine _LIBCPP_HAS_MUSL_LIBC
//#cmakedefine _LIBCPP_HAS_THREAD_API_PTHREAD
//#cmakedefine _LIBCPP_HAS_THREAD_API_EXTERNAL
//#cmakedefine _LIBCPP_HAS_THREAD_API_WIN32
#define _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS
#define _LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS
#define _LIBCPP_NO_VCRUNTIME
//#cmakedefine _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION @_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION@
#define _LIBCPP_HAS_NO_FILESYSTEM
#define _LIBCPP_HAS_NO_RANDOM_DEVICE
#define _LIBCPP_HAS_NO_LOCALIZATION
#define _LIBCPP_HAS_NO_WIDE_CHARACTERS
//#cmakedefine _LIBCPP_HAS_NO_STD_MODULES
//
//// PSTL backends
//#cmakedefine _LIBCPP_PSTL_CPU_BACKEND_SERIAL
//#cmakedefine _LIBCPP_PSTL_CPU_BACKEND_THREAD
//#cmakedefine _LIBCPP_PSTL_CPU_BACKEND_LIBDISPATCH
//
//// Hardening.
//#cmakedefine01 _LIBCPP_ENABLE_HARDENED_MODE_DEFAULT
//#cmakedefine01 _LIBCPP_ENABLE_DEBUG_MODE_DEFAULT

// __USE_MINGW_ANSI_STDIO gets redefined on MinGW
#ifdef __clang__
#  pragma clang diagnostic push
#  pragma clang diagnostic ignored "-Wmacro-redefined"
#endif

//@_LIBCPP_ABI_DEFINES@
//@_LIBCPP_EXTRA_SITE_DEFINES@

#ifdef __clang__
#  pragma clang diagnostic pop
#endif

#endif // _LIBCPP___CONFIG_SITE