ubuntu-sdk-bugs team mailing list archive

Thread
Date
[Bug 1910551] [NEW] Qt Creator uses Clang-8 and expects Clang-8 include files but has no dependency on clang-8 include files

To: ubuntu-sdk-bugs@xxxxxxxxxxxxxxxxxxx
From: M W <1910551@xxxxxxxxxxxxxxxxxx>
Date: Thu, 07 Jan 2021 14:32:56 -0000
Reply-to: Bug 1910551 <1910551@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

```
lsb_release -rd
Description:	Ubuntu 20.04.1 LTS
Release:	20.04
```

qtcreator version:

```
apt show qtcreator
Package: qtcreator
Version: 4.11.0-2build2
Priority: optional
Section: universe/devel
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@xxxxxxxxxxxxxxxx>
Original-Maintainer: Debian Qt/KDE Maintainers <debian-qt-kde@xxxxxxxxxxxxxxxx>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 115 MB
Depends: libqt5sql5-sqlite, qml-module-qtqml-models2, qml-module-qtquick-controls (>= 5.5.0~), qml-module-qtquick2 (>= 5.5.0~), qtchooser, qtcreator-data (= 4.11.0-2build2), libc6 (>= 2.29), libclang1-8 (>= 1:7~svn334604-1~+0~), libgcc-s1 (>= 3.0), libkf5syntaxhighlighting5, libllvm8 (>= 1:8~svn298832-1~), libqbscore1.13 (>= 1.12.0), libqt5concurrent5 (>= 5.6.2~), libqt5core5a (>= 5.12.2), libqt5designer5 (>= 5.6.2~), libqt5designercomponents5 (>= 5.6.2~), libqt5gui5 (>= 5.12.2) | libqt5gui5-gles (>= 5.12.2), libqt5help5 (>= 5.9.0), libqt5network5 (>= 5.6.2~), libqt5printsupport5 (>= 5.6.2~), libqt5qml5 (>= 5.2.0~rc1), libqt5quick5 (>= 5.9.0~beta) | libqt5quick5-gles (>= 5.9.0~beta), libqt5quickwidgets5 (>= 5.11.0), libqt5script5 (>= 5.6.2~), libqt5serialport5 (>= 5.9.0), libqt5sql5 (>= 5.6.2~), libqt5widgets5 (>= 5.12.2), libqt5xml5 (>= 5.6.2~), libstdc++6 (>= 9), qtbase-abi-5-12-8, qtdeclarative-abi-5-12-8
Recommends: clang, clang-tidy, gdb, make, qmlscene, qt5-doc, qt5-qmltooling-plugins, qtbase5-dev-tools, qtcreator-doc, qtdeclarative5-dev-tools, qttools5-dev-tools, qttranslations5-l10n, qtxmlpatterns5-dev-tools, xterm | x-terminal-emulator
Suggests: clazy (>= 1.5), cmake, g++, git, kate-data, subversion, valgrind
Breaks: qtcreator-data (<< 4.5.2-2~)
Replaces: qtcreator-data (<< 4.5.2-2~)
Homepage: https://doc.qt.io/qt-5/topics-app-development.html
Download-Size: 29.0 MB
APT-Manual-Installed: yes
APT-Sources: http://gb.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
Description: integrated development environment (IDE) for Qt
 Qt Creator is a cross-platform integrated development environment (IDE)
 designed to make development with the Qt application framework faster
 and easier.
 .
 It includes:
  * An advanced C++ code editor
  * Integrated GUI layout and forms designer
  * Project and build management tools
  * Integrated, context-sensitive help system
  * Visual debugger
  * Rapid code navigation tools
  * Supports multiple platforms
  * Qt Quick Designer
```

Qt Creator has a code model which shows errors as the project is being
worked on.

However, in the event that clang-8's include files are missing (which
was the case because I did not have clang-8 installed, just libclang1-8
which was the actual dependency, and clang-10), the Clang code model
shows errors about "stddef" not being found, thus indirectly causing C++
Qt projects to show a lot of phantom errors.

This is essentially a missing-dependency issue; Qt Creator expects the
include files of the Clang version it was compiled with, and it doesn't
get them.

The exact issue was determined via:
```
ldd /usr/lib/x86_64-linux-gnu/qtcreator/libexec/clangbackend
	linux-vdso.so.1 (0x00007ffde3bee000)
	libSqlite.so.4 => /usr/lib/x86_64-linux-gnu/qtcreator/libexec/../libSqlite.so.4 (0x00007fe611caf000)
	libClangsupport.so.4 => /usr/lib/x86_64-linux-gnu/qtcreator/libexec/../libClangsupport.so.4 (0x00007fe611c2d000)
	libUtils.so.4 => /usr/lib/x86_64-linux-gnu/qtcreator/libexec/../libUtils.so.4 (0x00007fe61196d000)
	libclang-8.so.1 => /lib/x86_64-linux-gnu/libclang-8.so.1 (0x00007fe60ffc2000)
<...further details omitted...>
```

Installing package "clang-8" completely resolved the issue.
If that is not an available workaround, providing /usr/include/clang/8/include (symlink to other Clang include directory?) should be sufficient, but I haven't tested this.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: qtcreator 4.11.0-2build2
ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
Uname: Linux 5.4.0-58-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Thu Jan  7 14:20:01 2021
InstallationDate: Installed on 2020-10-06 (93 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: qtcreator
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: qtcreator (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal third-party-packages

** Summary changed:

- Qt Creator has dependency on Clang-10 but uses Clang-8 and expects Clang-8 include files
+ Qt Creator uses Clang-8 and expects Clang-8 include files but has no dependency on clang-8 include files

-- 
You received this bug notification because you are a member of Ubuntu
SDK bug tracking, which is subscribed to qtcreator in Ubuntu.
https://bugs.launchpad.net/bugs/1910551

Title:
  Qt Creator uses Clang-8 and expects Clang-8 include files but has no
  dependency on clang-8 include files

Status in qtcreator package in Ubuntu:
  New

Bug description:
  ```
  lsb_release -rd
  Description:	Ubuntu 20.04.1 LTS
  Release:	20.04
  ```

  qtcreator version:

  ```
  apt show qtcreator
  Package: qtcreator
  Version: 4.11.0-2build2
  Priority: optional
  Section: universe/devel
  Origin: Ubuntu
  Maintainer: Ubuntu Developers <ubuntu-devel-discuss@xxxxxxxxxxxxxxxx>
  Original-Maintainer: Debian Qt/KDE Maintainers <debian-qt-kde@xxxxxxxxxxxxxxxx>
  Bugs: https://bugs.launchpad.net/ubuntu/+filebug
  Installed-Size: 115 MB
  Depends: libqt5sql5-sqlite, qml-module-qtqml-models2, qml-module-qtquick-controls (>= 5.5.0~), qml-module-qtquick2 (>= 5.5.0~), qtchooser, qtcreator-data (= 4.11.0-2build2), libc6 (>= 2.29), libclang1-8 (>= 1:7~svn334604-1~+0~), libgcc-s1 (>= 3.0), libkf5syntaxhighlighting5, libllvm8 (>= 1:8~svn298832-1~), libqbscore1.13 (>= 1.12.0), libqt5concurrent5 (>= 5.6.2~), libqt5core5a (>= 5.12.2), libqt5designer5 (>= 5.6.2~), libqt5designercomponents5 (>= 5.6.2~), libqt5gui5 (>= 5.12.2) | libqt5gui5-gles (>= 5.12.2), libqt5help5 (>= 5.9.0), libqt5network5 (>= 5.6.2~), libqt5printsupport5 (>= 5.6.2~), libqt5qml5 (>= 5.2.0~rc1), libqt5quick5 (>= 5.9.0~beta) | libqt5quick5-gles (>= 5.9.0~beta), libqt5quickwidgets5 (>= 5.11.0), libqt5script5 (>= 5.6.2~), libqt5serialport5 (>= 5.9.0), libqt5sql5 (>= 5.6.2~), libqt5widgets5 (>= 5.12.2), libqt5xml5 (>= 5.6.2~), libstdc++6 (>= 9), qtbase-abi-5-12-8, qtdeclarative-abi-5-12-8
  Recommends: clang, clang-tidy, gdb, make, qmlscene, qt5-doc, qt5-qmltooling-plugins, qtbase5-dev-tools, qtcreator-doc, qtdeclarative5-dev-tools, qttools5-dev-tools, qttranslations5-l10n, qtxmlpatterns5-dev-tools, xterm | x-terminal-emulator
  Suggests: clazy (>= 1.5), cmake, g++, git, kate-data, subversion, valgrind
  Breaks: qtcreator-data (<< 4.5.2-2~)
  Replaces: qtcreator-data (<< 4.5.2-2~)
  Homepage: https://doc.qt.io/qt-5/topics-app-development.html
  Download-Size: 29.0 MB
  APT-Manual-Installed: yes
  APT-Sources: http://gb.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
  Description: integrated development environment (IDE) for Qt
   Qt Creator is a cross-platform integrated development environment (IDE)
   designed to make development with the Qt application framework faster
   and easier.
   .
   It includes:
    * An advanced C++ code editor
    * Integrated GUI layout and forms designer
    * Project and build management tools
    * Integrated, context-sensitive help system
    * Visual debugger
    * Rapid code navigation tools
    * Supports multiple platforms
    * Qt Quick Designer
  ```

  Qt Creator has a code model which shows errors as the project is being
  worked on.

  However, in the event that clang-8's include files are missing (which
  was the case because I did not have clang-8 installed, just
  libclang1-8 which was the actual dependency, and clang-10), the Clang
  code model shows errors about "stddef" not being found, thus
  indirectly causing C++ Qt projects to show a lot of phantom errors.

  This is essentially a missing-dependency issue; Qt Creator expects the
  include files of the Clang version it was compiled with, and it
  doesn't get them.

  The exact issue was determined via:
  ```
  ldd /usr/lib/x86_64-linux-gnu/qtcreator/libexec/clangbackend
  	linux-vdso.so.1 (0x00007ffde3bee000)
  	libSqlite.so.4 => /usr/lib/x86_64-linux-gnu/qtcreator/libexec/../libSqlite.so.4 (0x00007fe611caf000)
  	libClangsupport.so.4 => /usr/lib/x86_64-linux-gnu/qtcreator/libexec/../libClangsupport.so.4 (0x00007fe611c2d000)
  	libUtils.so.4 => /usr/lib/x86_64-linux-gnu/qtcreator/libexec/../libUtils.so.4 (0x00007fe61196d000)
  	libclang-8.so.1 => /lib/x86_64-linux-gnu/libclang-8.so.1 (0x00007fe60ffc2000)
  <...further details omitted...>
  ```

  Installing package "clang-8" completely resolved the issue.
  If that is not an available workaround, providing /usr/include/clang/8/include (symlink to other Clang include directory?) should be sufficient, but I haven't tested this.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: qtcreator 4.11.0-2build2
  ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
  Uname: Linux 5.4.0-58-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: MATE
  Date: Thu Jan  7 14:20:01 2021
  InstallationDate: Installed on 2020-10-06 (93 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  SourcePackage: qtcreator
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1910551/+subscriptions