Failed to build Qt 6.3.0 from source on Ubuntu 22.04.

[jiapei100]

Hi, all:

My ENV:

➜  ~ uname -r
5.15.0-27-generic
➜  ~ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 22.04 LTS
Release:	22.04
Codename:	jammy
➜  ~ gcc --version
gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

➜  ~ python --version
Python 3.10.4

I'm trying to build Qt 6.3.0 from source, but ./configure brought me the following 2 ERROR messages directly:

• Could NOT find Qt6WebSockets (missing: Qt6WebSockets_DIR)

Configuring 'qtmqtt'
-- Could NOT find Qt6WebSockets (missing: Qt6WebSockets_DIR)
CMake Warning at qtbase/lib/cmake/Qt6/Qt6Config.cmake:263 (message):
  Failed to find Qt component "WebSockets".

  Expected Config file at
  "....../qt-everywhere-src-6.3.0/qtbase/lib/cmake/Qt6WebSockets/Qt6WebSocketsConfig.cmake"
  does NOT exist

Call Stack (most recent call first):
  qtmqtt/CMakeLists.txt:14 (find_package)

And line 14 of qtmqtt/CMakeLists.txt is

find_package(Qt6 ${PROJECT_VERSION} CONFIG OPTIONAL_COMPONENTS Quick WebSockets # For tests # special case
                                                               Gui Widgets) # For examples # special case

• Targets not yet defined: draco_static

Configuring 'qtquick3d'
CMake Error at /usr/lib/x86_64-linux-gnu/cmake/draco/draco-targets.cmake:37 (message):
  Some (but not all) targets in this export set were already defined.

  Targets Defined: draco_shared

  Targets not yet defined: draco_static

Call Stack (most recent call first):
  /usr/lib/x86_64-linux-gnu/cmake/draco/draco-config.cmake:36 (include)
  /usr/lib/x86_64-linux-gnu/cmake/assimp-5.2/assimpConfig.cmake:37 (find_package)
  qtquick3d/cmake/FindWrapQuick3DAssimp.cmake:7 (find_package)
  qtbase/cmake/QtFindPackageHelpers.cmake:130 (find_package)
  qtquick3d/src/plugins/assetimporters/configure.cmake:13 (qt_find_package)
  qtquick3d/src/plugins/assetimporters/CMakeLists.txt:9 (include)

Can anybody give me a hand please?

Thank you very much...

[kkoehne]

-- Could NOT find Qt6WebSockets (missing: Qt6WebSockets_DIR)
CMake Warning at qtbase/lib/cmake/Qt6/Qt6Config.cmake:263 (message):
  Failed to find Qt component "WebSockets".

  Expected Config file at
  "....../qt-everywhere-src-6.3.0/qtbase/lib/cmake/Qt6WebSockets/Qt6WebSocketsConfig.cmake"
  does NOT exist

Call Stack (most recent call first):
  qtmqtt/CMakeLists.txt:14 (find_package)

This is just a warning, which seems safe to ignore.

Configuring 'qtquick3d'
CMake Error at /usr/lib/x86_64-linux-gnu/cmake/draco/draco-targets.cmake:37 (message):
  Some (but not all) targets in this export set were already defined.

  Targets Defined: draco_shared

  Targets not yet defined: draco_static

Call Stack (most recent call first):
  /usr/lib/x86_64-linux-gnu/cmake/draco/draco-config.cmake:36 (include)
  /usr/lib/x86_64-linux-gnu/cmake/assimp-5.2/assimpConfig.cmake:37 (find_package)
  qtquick3d/cmake/FindWrapQuick3DAssimp.cmake:7 (find_package)

This is an actual error, and hints towards a problem in draco/assimp. As a workaround, you can try to configure with -qt-assimp.

[jiapei100]

@kkoehne Thank you so much for your prompt reply...

This ERROR is now solved by manually build and install draco and assimp.
However, I still got the following issue:

Call Stack (most recent call first):
   qtbase/lib/cmake/Qt6Qml/Qt6QmlBuildInternals.cmake:224 (qt_internal_add_plugin)
   qtwayland/src/imports/compositor-extensions/qtshell/CMakeLists.txt:5 (qt_internal_add_qml_module)
 This warning is for project developers.  Use -Wno-dev to suppress it.
 Configuring 'qtwebsockets'
 Configuring 'qtwebchannel'
 Configuring 'qtwebengine'
 -- Checking 'ulimit -n'
  -- Open files limit 1024
  -- Creating linker launcher
 -- Support check for QtWebEngine failed: Could not find all necessary libraries for qpa-xcb support. X11:YES LIBDRM:YES XCOMPOSITE:YES XCURSOR:YES XRANDR:YES XI:YES XPROTO:YES XSHMFENCE:YES XTST:YES
 Configuring 'qtwebview'
 Could NOT find Qt6WebEngineCore (missing: Qt6WebEngineCore_DIR)
 CMake Warning at qtbase/lib/cmake/Qt6/Qt6Config.cmake:263 (message):
   Failed to find Qt component "WebEngineCore".

   Expected Config file at
   "/home/longervision/Downloads/Programming/GUI/qt-everywhere-src-6.3.0/qtbase/lib/cmake/Qt6WebEngineCore/Qt6WebEngineCoreConfig.cmake"
   does NOT exist

 Call Stack (most recent call first):
   qtwebview/CMakeLists.txt:12 (find_package)

 Could NOT find Qt6WebEngineQuick (missing: Qt6WebEngineQuick_DIR)
 CMake Warning at qtbase/lib/cmake/Qt6/Qt6Config.cmake:263 (message):
   Failed to find Qt component "WebEngineQuick".

   Expected Config file at
   "/home/longervision/Downloads/Programming/GUI/qt-everywhere-src-6.3.0/qtbase/lib/cmake/Qt6WebEngineQuick/Qt6WebEngineQuickConfig.cmake"
   does NOT exist

 Call Stack (most recent call first):
   qtwebview/CMakeLists.txt:12 (find_package)

-- The following OPTIONAL packages have not been found:

  * zstd
  * PCRE2 (required version >= 10.20)
  * unofficial-brotli
  * harfbuzz (required version >= 2.6.0)
  * Slog2
  * DirectFB
  * DB2, IBM DB2 client library, <https://www.ibm.com>
  * Oracle, Oracle client library, <https://www.oracle.com>
  * ODBC
  * Interbase, Interbase client library, <https://www.embarcadero.com/products/interbase>
  * Jasper
  * WrapJasper
  * Qt6LanguageServer (required version >= 6.3.0)
  * LTTngUST
  * AVFoundation
  * WMF
  * Qt6Gamepad (required version >= 6.3.0)
  * litehtml
  * Uacpp, The Unified Automation C++ OPC UA SDK, <https://www.unified-automation.com/products/server-sdk/c-ua-server-sdk.html>
  * Gypsy
  * Sensorfw
  * CerenceHwrAlphabetic
  * CerenceHwrCjk
  * CerenceXt9
  * MyScript
  * Waylandkms
  * Qt6JpegPrivate (required version >= 6.3.0)
  * Qt6PngPrivate (required version >= 6.3.0)
  * Qt6HarfbuzzPrivate (required version >= 6.3.0)
  * Qt6FreetypePrivate (required version >= 6.3.0)
  * Qt6ZlibPrivate (required version >= 6.3.0)
  * Gn (required version == 6.3.0), Meta-build system, <https://gn.googlesource.com/gn/>
  * Qt6QmlCompilerPlusPrivate
  * Qt6WebEngineCore (required version >= 6.3.0)
  * Qt6WebEngineQuick (required version >= 6.3.0)

Some of the so-called not-found packages, I've already installed from repository.
Others seem to be NOT available on Ubuntu 22.04.

Any further suggestions? From https://www.tal.org/tutorials/building-qtwebengine, do I have to install everything else before trying to install QtWebEngine?

Thank you