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45 lines
2.4 KiB
Markdown
45 lines
2.4 KiB
Markdown
---
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date: 2018-01-12
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category: 2018
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labels:
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- Advisories
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- Development
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theme:
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markdown:
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editPage:
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hide: true
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---
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# Boost 1.66 Not Supported for rippled 0.81.0
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A warning to developers: `rippled` versions 0.81.0 and earlier do not compile with the recently-released Boost library version 1.66.0. To compile `rippled` yourself, Ripple recommends using **Boost version 1.65.1**. The minimum supported version of Boost is 1.58.0, which is included in the official repositories of Ubuntu 16.04 Xenial.
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## Compiler Errors
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If you try to compile `rippled` version 0.81.0 with Boost version 1.66.0 or higher, you get compiler errors such as the following:
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```
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In file included from src/beast/include/beast/core/detail/type_traits.hpp:13:0,
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from src/beast/include/beast/core/impl/static_string.ipp:12,
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from src/beast/include/beast/core/static_string.hpp:1106,
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from src/beast/include/beast/core/string_param.hpp:13,
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from src/beast/include/beast/http/fields.hpp:12,
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from src/beast/include/beast/http/message.hpp:12,
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from src/ripple/server/Handoff.h:24,
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from src/ripple/overlay/Overlay.h:26,
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from src/ripple/app/consensus/RCLConsensus.cpp:39,
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from src/ripple/unity/app_consensus.cpp:21:
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/usr/include/boost/asio/io_service.hpp:27:20: error: conflicting declaration
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‘typedef class boost::asio::io_context boost::asio::io_service’
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typedef io_context io_service;
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```
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If you encounter this issue, please downgrade to Boost version 1.65.1.
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## Background
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Boost 1.66.0 [introduces the `Boost.Beast` library for HTTP and WebSocket connections](http://www.boost.org/doc/libs/1_66_0/libs/beast/doc/html/beast/introduction.html). The Beast library was built by [prolific coder and Ripple alum Vinnie Falco](https://github.com/vinniefalco) as an add-on to the `Boost.Asio` library, for use in `rippled` and other C++ software. Because Beast made its start in the `rippled` code base, the version already included in `rippled` conflicts with the version included as part of the Boost library in versions 1.66.0 and higher.
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## Future Work
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Ripple expects to make `rippled` compatible with Boost 1.66.0 and higher in a future release. At that time, `rippled` will no longer be compatible with Boost version 1.65.x and lower. Stay tuned to `rippled` release announcements for updates on this transition.
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