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bitcoin/doc/dependencies.md
fanquake c9ed9927bb
Merge bitcoin/bitcoin#24132: build: Bump minimum Qt version to 5.11.3 
956f7322f6 build: Bump minimum Qt version to 5.11.3 (Hennadii Stepanov)
e22d10b936 ci: Switch from bionic to buster (Hennadii Stepanov)

Pull request description:

  The current minimum Qt version is 5.9.5 which has been set in bitcoin/bitcoin#21286.

  Distro support:
  - centos 7 -- unsupported since bitcoin/bitcoin#23511
  - centos 8 -- [5.15.2](http://mirror.centos.org/centos/8/AppStream/x86_64/os/Packages/qt5-qtbase-5.15.2-3.el8.x86_64.rpm)
  - buster -- [5.11.3](https://packages.debian.org/buster/libqt5core5a)
  - bullseye  -- [5.15.2](https://packages.debian.org/bullseye/libqt5core5a)
  - _bionic_ -- [5.9.5](https://packages.ubuntu.com/bionic/libqt5core5a)
  - focal -- [5.12.8](https://packages.ubuntu.com/focal/libqt5core5a)

  As another Ubuntu LTS is coming soon, it seems unreasonable to stick to Qt 5.9 which support [ended](https://www.qt.io/blog/2017/06/07/renewed-qt-support-services) on 2020-05-31. Anyway, it's still possible to build Bitcoin Core GUI with depends on bionic system.

  Bumping the minimum Qt version allows to make code safer and more reliable, e.g.:
  - functor-parameter overload of [`QMetaObject::invokeMethod`](https://doc.qt.io/qt-5/qmetaobject.html#invokeMethod-4)
  - fixed https://bugreports.qt.io/browse/QTBUG-10907

  An example of the patch using the functor-overload of `QMetaObject::invokeMethod`:
  ```diff
  --- a/src/qt/walletmodel.cpp
  +++ b/src/qt/walletmodel.cpp
  @@ -349,7 +349,7 @@ bool WalletModel::changePassphrase(const SecureString &oldPass, const SecureStri
   static void NotifyUnload(WalletModel* walletModel)
   {
       qDebug() << "NotifyUnload";
  -    bool invoked = QMetaObject::invokeMethod(walletModel, "unload");
  +    bool invoked = QMetaObject::invokeMethod(walletModel, &WalletModel::unload);
       assert(invoked);
   }

  ```
  It uses the same new syntax as signal-slot connection with compile-time check. Also see bitcoin/bitcoin#16348.

  This PR is intended to be merged early [after](https://github.com/bitcoin/bitcoin/issues/22969) branching `23.x` off.

ACKs for top commit:
  MarcoFalke:
    cr ACK 956f7322f6
  fanquake:
    ACK 956f7322f6

Tree-SHA512: 3d652bcdcd990ce785ad412ed70234d4f27743895e535a53ed44b35d4afc3052e066c4c84f417e30bc53d0a3dd9ebed62444c57b7c765cb1e9aa687fbf866877
2022-03-07 14:53:23 +00:00

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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
Berkeley DB 4.8.30 4.8.x No
Boost 1.77.0 1.64.0 No
Clang * 7.0 (C++17 & std::filesystem support)
Fontconfig 2.12.6 No Yes
FreeType 2.11.0 No Yes (Android only)
GCC 8.1 (C++17 & std::filesystem support)
glibc 2.18
HarfBuzz-NG Yes
libevent 2.1.12-stable 2.0.21 No
libnatpmp git commit 4536032... No
libpng Yes
MiniUPnPc 2.2.2 No
PCRE Yes
Python (tests) 3.6
qrencode 3.4.4 No
Qt 5.15.2 5.11.3 No
SQLite 3.32.1 3.7.17
XCB Yes (Linux only)
systemtap (tracing) 4.5
xkbcommon Yes (Linux only)
ZeroMQ 4.3.1 4.0.0 No
zlib Yes

Note * : When compiling with -stdlib=libc++, the minimum supported libc++ version is 7.0.

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 --without-miniupnpc.
  • libnatpmp is not needed with --without-natpmp.
  • Berkeley DB is not needed with --disable-wallet or --without-bdb.
  • SQLite is not needed with --disable-wallet or --without-sqlite.
  • 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.
  • If the systemtap dependency is absent, USDT support won't compiled in.
  • ZeroMQ is needed only with the --with-zmq option.

Other

  • Not-Qt-bundled zlib is required to build the DMG tool from the libdmg-hfsplus project.