Dependencies ============ These are the dependencies currently used by Bitcoin Core. You can find instructions for installing them in the `build-*.md` file for your platform. | Dependency | Version used | Minimum required | CVEs | Shared | [Bundled Qt library](https://doc.qt.io/qt-5/configure-options.html#third-party-libraries) | | --- | --- | --- | --- | --- | --- | | Berkeley DB | [4.8.30](https://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html) | 4.8.x | No | | | | Boost | [1.70.0](https://www.boost.org/users/download/) | [1.47.0](https://github.com/bitcoin/bitcoin/pull/8920) | No | | | | Clang | | [3.3+](https://releases.llvm.org/download.html) (C++11 support) | | | | | Expat | [2.2.7](https://libexpat.github.io/) | | No | Yes | | | fontconfig | [2.12.1](https://www.freedesktop.org/software/fontconfig/release/) | | No | Yes | | | FreeType | [2.7.1](https://download.savannah.gnu.org/releases/freetype) | | No | | | | GCC | | [4.8+](https://gcc.gnu.org/) (C++11 support) | | | | | HarfBuzz-NG | | | | | | | libevent | [2.1.11-stable](https://github.com/libevent/libevent/releases) | 2.0.22 | No | | | | libpng | | | | | [Yes](https://github.com/bitcoin/bitcoin/blob/master/depends/packages/qt.mk) | | librsvg | | | | | | | MiniUPnPc | [2.0.20180203](https://miniupnp.tuxfamily.org/files) | | No | | | | PCRE | | | | | [Yes](https://github.com/bitcoin/bitcoin/blob/master/depends/packages/qt.mk) | | Python (tests) | | [3.5](https://www.python.org/downloads) | | | | | qrencode | [3.4.4](https://fukuchi.org/works/qrencode) | | No | | | | Qt | [5.9.7](https://download.qt.io/official_releases/qt/) | [5.5.1](https://github.com/bitcoin/bitcoin/issues/13478) | No | | | | XCB | | | | | [Yes](https://github.com/bitcoin/bitcoin/blob/master/depends/packages/qt.mk) (Linux only) | | xkbcommon | | | | | [Yes](https://github.com/bitcoin/bitcoin/blob/master/depends/packages/qt.mk) (Linux only) | | ZeroMQ | [4.3.1](https://github.com/zeromq/libzmq/releases) | 4.0.0 | No | | | | zlib | [1.2.11](https://zlib.net/) | | | | No | Controlling dependencies ------------------------ Some dependencies are not needed in all configurations. The following are some factors that affect the dependency list. #### Options passed to `./configure` * MiniUPnPc is not needed with `--with-miniupnpc=no`. * Berkeley DB is not needed with `--disable-wallet`. * Qt is not needed with `--without-gui`. * If the qrencode dependency is absent, QR support won't be added. To force an error when that happens, pass `--with-qrencode`. * ZeroMQ is needed only with the `--with-zmq` option. #### Other * librsvg is only needed if you need to run `make deploy` on (cross-compilation to) macOS.