54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#if defined(__has_include) && __cplusplus >= 201703L
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#if __has_include(<memory_resource>)
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#define FOLLY_HAS_MEMORY_RESOURCE 1
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#include <memory_resource> // @manual
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namespace folly {
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namespace detail {
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namespace std_pmr = ::std::pmr;
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} // namespace detail
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} // namespace folly
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// Ignore experimental/memory_resource for libc++ so that all programs
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// don't need to explicitly link the c++experimental lib
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#elif !defined(_LIBCPP_VERSION) && __has_include(<experimental/memory_resource>)
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#define FOLLY_HAS_MEMORY_RESOURCE 1
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#include <experimental/memory_resource> // @manual
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namespace folly {
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namespace detail {
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namespace std_pmr = ::std::experimental::pmr;
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} // namespace detail
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} // namespace folly
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#else
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#define FOLLY_HAS_MEMORY_RESOURCE 0
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#endif
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#else // __has_include
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#define FOLLY_HAS_MEMORY_RESOURCE 0
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#endif // __has_include
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