rocksdb/util/gflags_compat.h

//  Copyright (c) 2017-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under both the GPLv2 (found in the
//  COPYING file in the root directory) and Apache 2.0 License
//  (found in the LICENSE.Apache file in the root directory).

#include <gflags/gflags.h>

#ifndef GFLAGS_NAMESPACE
// in case it's not defined in old versions, that's probably because it was
// still google by default.
#define GFLAGS_NAMESPACE google
#endif

#ifndef DEFINE_uint32
// DEFINE_uint32 does not appear in older versions of gflags. This should be
// a sane definition for those versions.
#define DEFINE_uint32(name, val, txt) \
  DEFINE_VARIABLE(GFLAGS_NAMESPACE::uint32, U, name, val, txt)
#endif