build: Bump minimum Qt version to 5.5.1 #15393

pull Sjors wants to merge 1 commits into bitcoin:master from Sjors:2019/02/qt-5_5 changing 6 files +8 −32
  1. Sjors commented at 7:30 PM on February 12, 2019: member

    Fixes #13478

    Compiled and lightly tested on 10.14.3 against QT 5.12.0.

  2. MarcoFalke renamed this:
    Bump minimum Qt version to 5.5.1
    build: Bump minimum Qt version to 5.5.1
    on Feb 12, 2019
  3. MarcoFalke added the label Build system on Feb 12, 2019
  4. MarcoFalke added this to the milestone 0.18.0 on Feb 12, 2019
  5. luke-jr commented at 8:53 PM on February 12, 2019: member

    Is there an actual benefit to this?

    Has anyone done a check for what versions come with current stable distros?

  6. MarcoFalke commented at 9:10 PM on February 12, 2019: member

    Examples:

    Also,

    • 5.5.1 is long EOL anyway and it'd be better if the user built qt from our depends
    • Bitcoin Core wouldn't compile with qt5.2 anyway
  7. fanquake commented at 1:25 AM on February 13, 2019: member

    Concept ACK

  8. in build-aux/m4/bitcoin_qt.m4:119 in 45855af9e6 outdated 
     132 | -      [bitcoin_cv_need_acc_widget=no])
 133 | -    ])
 134 | -    if test "x$bitcoin_cv_need_acc_widget" = xyes; then
 135 | -      _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(AccessibleFactory)], [-lqtaccessiblewidgets])
 136 | -    fi
 137 | +    _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(AccessibleFactory)], [-lqtaccessiblewidgets])
    fanquake commented at 1:26 AM on February 13, 2019:

    Pretty sure you need to drop this line as well (it's causing the macOS and windows Travis builds to fail: https://travis-ci.org/bitcoin/bitcoin/jobs/492335743#L1641).

    Sjors commented at 8:17 AM on February 13, 2019:

    Indeed, bitcoin_cv_need_acc_widget would have been xno before.

  9. in doc/dependencies.md:26 in 45855af9e6 outdated 
      22 | @@ -23,7 +23,7 @@ These are the dependencies currently used by Bitcoin Core. You can find instruct
  23 |  | protobuf | [2.6.1](https://github.com/google/protobuf/releases) |  | No |  |  |
  24 |  | Python (tests) |  | [3.4](https://www.python.org/downloads) |  |  |  |
  25 |  | qrencode | [3.4.4](https://fukuchi.org/works/qrencode) |  | No |  |  |
  26 | -| Qt | [5.9.7](https://download.qt.io/official_releases/qt/) | [5.2](https://github.com/bitcoin/bitcoin/pull/14725) | No |  |  |
  27 | +| Qt | [5.9.7](https://download.qt.io/official_releases/qt/) | 5.5.1 | No |  |  |
    fanquake commented at 1:27 AM on February 13, 2019:

    Could you (assuming it is merged) link to this PR as a reference? It's useful when referring to the docs to be able to jump straight to the PR/discussion that bumped a dependency.

  10. jonasschnelli commented at 6:26 AM on February 13, 2019: contributor

    Concept ACK

  11. Sjors force-pushed on Feb 13, 2019
  12. Sjors commented at 8:18 AM on February 13, 2019: member

    @luke-jr wrote:

    Is there an actual benefit to this?

    See discussion in #13478

    I added a link to that discussion in doc/dependencies.md and dropped the Q_IMPORT_PLUGIN(AccessibleFactory) line.

  13. in src/qt/test/apptests.cpp:30 in a4d80ff95a outdated 
      26 | @@ -27,9 +27,7 @@
  27 |  #include <QTest>
  28 |  #include <QTextEdit>
  29 |  #include <QtGlobal>
  30 | -#if QT_VERSION >= 0x050000
  31 |  #include <QtTest/QtTestWidgets>
    practicalswift commented at 10:58 AM on February 13, 2019:

    Could sort includes :-)

  14. in build-aux/m4/bitcoin_qt.m4:261 in a4d80ff95a outdated 
     257 | @@ -276,7 +258,7 @@ AC_DEFUN([_BITCOIN_QT_CHECK_QT5],[
 258 |        #endif
 259 |      ]],
 260 |      [[
 261 | -      #if QT_VERSION < 0x050200 || QT_VERSION_MAJOR < 5
 262 | +      #if QT_VERSION < 0x050501 || QT_VERSION_MAJOR < 5
    flack commented at 12:14 PM on February 13, 2019:

    is the QT_VERSION_MAJOR clause still needed? At first glance, it looks like a leftover from when Qt 4 was still supported

    Sjors commented at 2:53 PM on February 13, 2019:

    I was assuming this is a generic check to see if QT >=5.5.1 is present at all, but haven't tried what happens with older QT versions.

    flack commented at 3:39 PM on February 13, 2019:

    according to https://doc.qt.io/qt-5/qtglobal.html#QT_VERSION if QT_MAJOR_VERSION is 4, then QT_VERSION should be something like 0x040102, so it would already fail the first clause. IOW, I don't think there is any constellation where the first clause is false and the second one is true

    MarcoFalke commented at 3:43 PM on February 13, 2019:

    Could ask @TheCharlatan if there was a reason to do this in 28482efefb15dc2c273a52b96d1aceb995db4968

    Sjors commented at 4:11 PM on February 13, 2019:

    @flack I thought you were referring to the entire line. Yes, I agree the || QT_VERSION_MAJOR < 5 bit seems redundant. That maybe have been in order to support both 4.x and 5.x from certain minor versions onward.

    TheCharlatan commented at 9:33 AM on February 14, 2019:

    I was confused about what the actual supported minor version was at the time. Either way, it is definitely redundant with this pr.

  15. MarcoFalke added the label Needs gitian build on Feb 13, 2019
  16. fanquake commented at 1:22 AM on February 14, 2019: member

    @Sjors Could you add release notes to this PR as well?

  17. fanquake added the label Needs release note on Feb 14, 2019
  18. DrahtBot commented at 8:11 AM on February 14, 2019: member

    <!--a722867cd34abeea1fadc8d60700f111-->

    Gitian builds for commit 0d1160e42185983b398cbc2e2be379002f4a62e9 (master):

    Gitian builds for commit 1dae32ea42ef252b3b4be62858b73afb81adff81 (master and this pull):

  19. DrahtBot removed the label Needs gitian build on Feb 14, 2019
  20. Sjors force-pushed on Feb 14, 2019
  21. Sjors commented at 9:13 AM on February 14, 2019: member

    Added release note. The gitian binaries should still be valid.

  22. Bump minimum Qt version to 5.5.1 fd46c4c001
  23. Sjors force-pushed on Feb 14, 2019
  24. Sjors commented at 10:12 AM on February 14, 2019: member

    I removed the redundant || QT_VERSION_MAJOR < 5.

  25. MarcoFalke commented at 7:33 PM on February 14, 2019: member

    There was a discussion on IRC that debian 8 comes with 5.3 (https://packages.debian.org/jessie/qt5-default)

    The conclusion was that anyone on debian 8 should use our ./depends qt package: http://www.erisian.com.au/bitcoin-core-dev/log-2019-02-14.html#l-405

  26. hebasto commented at 8:13 PM on February 14, 2019: member

    utACK fd46c4c0018c41d36cd892ccb47485b572d65837

  27. MarcoFalke commented at 8:15 PM on February 14, 2019: member

    utACK fd46c4c0018c41d36cd892ccb47485b572d65837

  28. jonasschnelli merged this on Feb 14, 2019
  29. jonasschnelli closed this on Feb 14, 2019
  30. jonasschnelli referenced this in commit 3b33cbc2b6 on Feb 14, 2019
  31. Sjors deleted the branch on Feb 14, 2019
  32. fanquake removed the label Needs release note on Mar 20, 2019
  33. lucayepa commented at 5:22 AM on March 27, 2019: contributor

    Ok, I'm late to the party, but we are going to have a release that will not build both on Debian Jessie (QT 5.3.2) and Ubuntu Trusty (QT 5.2.1).

    I agree with @jonasschnelli :

    <jonasschnelli> "but we need to expect users run it close to the LTS end".

    The LTS end date of Ubuntu Trusty is April 2019. The LTS end date of Debian Jessie is June 30, 2020.

    IMO we should have a policy not to break compatibility with LTS distributions, unless this is really something we need (i.e. bugs or big issues).

  34. Sjors commented at 8:45 AM on March 27, 2019: member

    @lucayepa it's better to bring this up in #13478.

  35. MarcoFalke commented at 12:37 PM on March 27, 2019: member

    @lucayepa It hasn't been building on those distros before this pull request because no one cared (found it worthwhile) to fix the code

    Trusty will be EOL before the final release and if you are on oldstable debian, you can build from depends or use the deterministic binaries.

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Contributors
Sjorsluke-jrMarcoFalkefanquakejonasschnellipracticalswiftflackTheCharlatanDrahtBothebastolucayepa
Labels
Build system

Milestone
0.18.0

Linked (view graph)
#13478 [RFC] gui: Minimum required Qt5#16707 qt: Remove obsolete QModelIndex::child()#16708 qt: Replace obsolete functions of QSslSocket#19689 build: Add Qt version checking#20104 [RFC] qt: Minimum required Qt5
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