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d2578ab195
Summary: Older versions of gflags do not have `DEFINE_uint32` and `DECLARE_uint32`. In util/gflag_compat.h, we already add a hack for `DEFINE_uint32`. This PR adds a hack for `DECLARE_uint32`. Pull Request resolved: https://github.com/facebook/rocksdb/pull/10729 Test Plan: ROCKSDB_NO_FBCODE=1 make V=1 -j16 db_stress make check Resolves https://github.com/facebook/rocksdb/issues/10704 Reviewed By: pdillinger Differential Revision: D39789183 Pulled By: riversand963 fbshipit-source-id: a58747e0163dcf55dd762733aa5c40d8f0ae70a6
31 lines
1.1 KiB
C++
31 lines
1.1 KiB
C++
// Copyright (c) 2017-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#include <gflags/gflags.h>
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#include <functional>
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#ifndef GFLAGS_NAMESPACE
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// in case it's not defined in old versions, that's probably because it was
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// still google by default.
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#define GFLAGS_NAMESPACE google
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#endif
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#ifndef DEFINE_uint32
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// DEFINE_uint32 does not appear in older versions of gflags. This should be
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// a sane definition for those versions.
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#include <cstdint>
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#define DEFINE_uint32(name, val, txt) \
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namespace gflags_compat { \
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DEFINE_int32(name, val, txt); \
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} \
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std::reference_wrapper<uint32_t> FLAGS_##name = \
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std::ref(*reinterpret_cast<uint32_t *>(&gflags_compat::FLAGS_##name));
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#define DECLARE_uint32(name) \
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extern std::reference_wrapper<uint32_t> FLAGS_##name;
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#endif // !DEFINE_uint32
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