3D Install Qt6

ofmrew

@ofmrew I got a number of CMake Errors before the line: CMake Generate step failed. Build files cannot be regenerated correctly. I did not include them because there is a limit on the size of a post, been down that road already today. An example is:

CMake Error at /home/bob/Qt/6.0.1/gcc_64/lib/cmake/Qt6/QtModuleHelpers.cmake:48 (add_library):
Target "3DExtras" links to target "XKB::XKB" but the target was not found.
Perhaps a find_package() call is missing for an IMPORTED target, or an
ALIAS target is missing?
Call Stack (most recent call first):
src/extras/CMakeLists.txt:7 (qt_internal_add_module)

Any suggestions?

SGaist

Missing libxkbcommon related development package ?

ofmrew

@SGaist said in 3D Install Qt6:

libxkbcommon

What is that and were do I find it?

SGaist

It's one dependency of the xcb plugin and your distribution package manager should provide it.

ofmrew

@SGaist It is not included in the Mint Software Manager.

ofmrew

@ofmrew Installed it. Now I get:

-export PATH=/home/bob/Qt/Tools/bin:/home/bob/Qt/Tools/Conan:/home/bob/Qt/Tools/Ninja:$PATH
bob@bob-linux:/$ cd /home/bob/Qt/Conan3D
bob@bob-linux:~/Qt/Conan3D$ conan install qt3d/6.0.1@qt/final --build=missing --profile=/home/bob/Qt/Tools/Conan/profiles/'''qt-6.0.1-gcc-x86_64''' -s build_type=Release -g cmake_paths -g=cmake -g deploy
Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=7.5
os=Linux
[options]
qt6=6.0.1
[build_requires]
[env]
QT_PATH=/home/bob/Qt/6.0.1/gcc_64
qt3d/6.0.1@qt/final: WARN: Package binary is corrupted, removing: 9105b5b4ab5d474532cfc28699da368141e8a4cf
Installing package: qt3d/6.0.1@qt/final
Requirements
qt3d/6.0.1@qt/final from local cache - Cache
Packages
qt3d/6.0.1@qt/final:9105b5b4ab5d474532cfc28699da368141e8a4cf - Build

Installing (downloading, building) binaries...
qt3d/6.0.1@qt/final: WARN: Build folder is dirty, removing it: /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf
qt3d/6.0.1@qt/final: Copying sources to build folder
qt3d/6.0.1@qt/final: Building your package in /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf
qt3d/6.0.1@qt/final: Generator txt created conanbuildinfo.txt
qt3d/6.0.1@qt/final: Calling build()
CMAKE_PREFIX_PATH for 'qt3d/6.0.1' build is: /home/bob/Qt/6.0.1/gcc_64
CMAKE_PREFIX_PATH for 'qt3d/6.0.1' build is: /home/bob/Qt/6.0.1/gcc_64
-- The CXX compiler identification is GNU 9.3.0
-- The C compiler identification is GNU 9.3.0
-- Check for working CXX compiler: /usr/bin/g++
-- Check for working CXX compiler: /usr/bin/g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Check if compiler accepts -pthread
-- Check if compiler accepts -pthread - yes
-- Found Threads: TRUE
-- Performing Test HAVE_STDATOMIC
-- Performing Test HAVE_STDATOMIC - Success
-- Found WrapAtomic: TRUE
-- Found OpenGL: /usr/lib/x86_64-linux-gnu/libOpenGL.so
-- Found WrapOpenGL: TRUE
-- Could NOT find Vulkan (missing: Vulkan_LIBRARY Vulkan_INCLUDE_DIR)
-- Found XKB: /usr/lib/x86_64-linux-gnu/libxkbcommon.so (found suitable version "0.10.0", minimum required is "0.5.0")
-- Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY OPENSSL_INCLUDE_DIR)
-- Could NOT find WrapOpenSSLHeaders (missing: WrapOpenSSLHeaders_FOUND)
-- Could NOT find Vulkan (missing: Vulkan_LIBRARY Vulkan_INCLUDE_DIR)
-- Could NOT find Qt6Gamepad (missing: Qt6Gamepad_DIR)
-- Could NOT find Vulkan (missing: Vulkan_LIBRARY Vulkan_INCLUDE_DIR)
-- Could NOT find Qt6ShaderTools (missing: Qt6ShaderTools_DIR)
-- Check for feature set changes
-- Using installed syncqt found at: /home/bob/Qt/6.0.1/gcc_64/libexec/syncqt.pl
-- Running syncqt for module: 'Qt3DCore'
-- Performing Test HAVE_DASH_UNDEFINED_SYMBOLS
-- Performing Test HAVE_DASH_UNDEFINED_SYMBOLS - Success
-- Performing Test HAVE_DASH_DASH_NO_UNDEFINED
-- Performing Test HAVE_DASH_DASH_NO_UNDEFINED - Success
-- Running syncqt for module: 'Qt3DLogic'
-- Running syncqt for module: 'Qt3DInput'
-- Running syncqt for module: 'Qt3DRender'
-- Running syncqt for module: 'Qt3DExtras'
-- Running syncqt for module: 'Qt3DAnimation'
-- Running syncqt for module: 'Qt3DQuick'
-- Running syncqt for module: 'Qt3DQuickRender'
-- Running syncqt for module: 'Qt3DQuickScene2D'
-- Running syncqt for module: 'Qt3DQuickExtras'
-- Running syncqt for module: 'Qt3DQuickInput'
-- Running syncqt for module: 'Qt3DQuickAnimation'
-- Could NOT find WrapAssimp (missing: WrapAssimp_FOUND) (Required is at least version "5")
-- Performing Test Assimp
-- Performing Test Assimp - Failed
-- Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
-- Performing Test Autodesk FBX
-- Performing Test Autodesk FBX - Failed
-- The following packages have been found:

Qt6BuildInternals
Qt6CoreTools (required version >= 6.0.1)
Qt6Core
Qt6Concurrent
Qt6WidgetsTools (required version >= 6.0.1)
OpenGL
XKB (required version >= 0.5.0), XKB API common to servers and clients., http://xkbcommon.org
Qt6GuiTools (required version >= 6.0.1)
Qt6Widgets
Qt6QmlTools (required version >= 6.0.1)
Qt6Qml
Qt6Quick
Qt6OpenGL
Qt6 (required version >= 6.0.1)

-- The following OPTIONAL packages have not been found:

OpenSSL
WrapOpenSSLHeaders
Qt6Gamepad
Vulkan
Qt6ShaderTools
WrapAssimp (required version >= 5)
ZLIB

Configure summary:

Qt3D Core:
Use SSE2 instructions .................. yes
Use AVX2 instructions .................. no
Animation aspect ....................... yes
Extras aspect .......................... yes
Input aspect ........................... yes
Logic aspect ........................... yes
Render aspect .......................... yes
Qt3D Scene Parsers:
Assimp ................................. yes
System Assimp .......................... no
Qt3D Geometry Loaders:
Autodesk FBX ........................... no
Qt3D Renderers:
OpenGL Renderer ........................ yes
RHI Renderer ........................... yes

-- Configuring done
CMake Error at /home/bob/Qt/6.0.1/gcc_64/lib/cmake/Qt6/QtPluginHelpers.cmake:50 (add_library):
Target "AssimpSceneImportPlugin" links to target "ZLIB::ZLIB" but the
target was not found. Perhaps a find_package() call is missing for an
IMPORTED target, or an ALIAS target is missing?
Call Stack (most recent call first):
src/plugins/sceneparsers/assimp/CMakeLists.txt:7 (qt_internal_add_plugin)

CMake Error at /home/bob/Qt/6.0.1/gcc_64/lib/cmake/Qt6/QtPluginHelpers.cmake:50 (add_library):
Target "AssimpSceneImportPlugin" links to target "ZLIB::ZLIB" but the
target was not found. Perhaps a find_package() call is missing for an
IMPORTED target, or an ALIAS target is missing?
Call Stack (most recent call first):
src/plugins/sceneparsers/assimp/CMakeLists.txt:7 (qt_internal_add_plugin)

-- Generating done
CMake Warning:
Manually-specified variables were not used by the project:

CMAKE_EXPORT_NO_PACKAGE_REGISTRY
CMAKE_INSTALL_BINDIR
CMAKE_INSTALL_DATAROOTDIR
CMAKE_INSTALL_INCLUDEDIR
CMAKE_INSTALL_LIBDIR
CMAKE_INSTALL_LIBEXECDIR
CMAKE_INSTALL_OLDINCLUDEDIR
CMAKE_INSTALL_SBINDIR
CONAN_COMPILER
CONAN_COMPILER_VERSION
CONAN_CXX_FLAGS
CONAN_C_FLAGS
CONAN_EXPORTED
CONAN_IN_LOCAL_CACHE
CONAN_LIBCXX
CONAN_SHARED_LINKER_FLAGS

CMake Generate step failed. Build files cannot be regenerated correctly.
qt3d/6.0.1@qt/final:
qt3d/6.0.1@qt/final: ERROR: Package '9105b5b4ab5d474532cfc28699da368141e8a4cf' build failed
qt3d/6.0.1@qt/final: WARN: Build folder /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf
ERROR: qt3d/6.0.1@qt/final: Error in build() method, line 120
self.run('%s "%s" %s' % (self._get_qtcmake(), self.source_folder, cmake.command_line))
ConanException: Error 1 while executing /home/bob/Qt/6.0.1/gcc_64/bin/qt-cmake "/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE="Release" -DCONAN_IN_LOCAL_CACHE="ON" -DCONAN_COMPILER="gcc" -DCONAN_COMPILER_VERSION="7.5" -DCONAN_CXX_FLAGS="-m64" -DCONAN_SHARED_LINKER_FLAGS="-m64" -DCONAN_C_FLAGS="-m64" -DCONAN_LIBCXX="libstdc++11" -DBUILD_SHARED_LIBS="OFF" -DCMAKE_INSTALL_PREFIX="/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/_install_tmp" -DCMAKE_INSTALL_BINDIR="bin" -DCMAKE_INSTALL_SBINDIR="bin" -DCMAKE_INSTALL_LIBEXECDIR="bin" -DCMAKE_INSTALL_LIBDIR="lib" -DCMAKE_INSTALL_INCLUDEDIR="include" -DCMAKE_INSTALL_OLDINCLUDEDIR="include" -DCMAKE_INSTALL_DATAROOTDIR="share" -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY="ON" -DCONAN_EXPORTED="1" -DCMAKE_VERBOSE_MAKEFILE="ON" -Wno-dev

SGaist

Well, Mint seems to have it.

ofmrew

@SGaist Not really I had to find it on the Web.

SGaist

You are missing the zlib development package.

ofmrew

Looks like ZLIB is missing, what is that?

CMake Error at /home/bob/Qt/6.0.1/gcc_64/lib/cmake/Qt6/QtPluginHelpers.cmake:50 (add_library):
Target "AssimpSceneImportPlugin" links to target "ZLIB::ZLIB" but the
target was not found. Perhaps a find_package() call is missing for an
IMPORTED target, or an ALIAS target is missing?
Call Stack (most recent call first):
src/plugins/sceneparsers/assimp/CMakeLists.txt:7 (qt_internal_add_plugin)

ofmrew

@ofmrew I should have waited, I found zlib1g-dev, is that what I need to install?

ofmrew

@ofmrew Again, I also found zlib 1.2.11, but no way to install.

ofmrew · @ofmrew Again, I also found zlib 1.2.11, but no way to install.

@ofmrew I installed zlib1g-dev and it might be working!

ofmrew

@ofmrew I spoke too soon.
home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp: In lambda function:
/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp:54:34: error: invalid use of incomplete type ‘class QVulkanInstance’
54 | QVulkanInstance* v = new QVulkanInstance;
| ^~~~~~~~~~~~~~~
In file included from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/qbackingstore.h:46,
from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/QtGui:17,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCoreDepends:4,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCore:3,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/CMakeFiles/3DRender.dir/cmake_pch.hxx:5,
from <command-line>:
/home/bob/Qt/6.0.1/gcc_64/include/QtGui/qwindow.h:94:7: note: forward declaration of ‘class QVulkanInstance’
94 | class QVulkanInstance;
| ^~~~~~~~~~~~~~~
/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp:61:14: error: invalid use of incomplete type ‘class QVulkanInstance’
61 | v->setLayers({ "VK_LAYER_KHRONOS_validation" });
| ^~
In file included from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/qbackingstore.h:46,
from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/QtGui:17,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCoreDepends:4,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCore:3,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/CMakeFiles/3DRender.dir/cmake_pch.hxx:5,
from <command-line>:
/home/bob/Qt/6.0.1/gcc_64/include/QtGui/qwindow.h:94:7: note: forward declaration of ‘class QVulkanInstance’
94 | class QVulkanInstance;
| ^~~~~~~~~~~~~~~
/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp:63:15: error: invalid use of incomplete type ‘class QVulkanInstance’
63 | if (!v->create())
| ^~
In file included from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/qbackingstore.h:46,
from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/QtGui:17,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCoreDepends:4,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCore:3,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/CMakeFiles/3DRender.dir/cmake_pch.hxx:5,
from <command-line>:
/home/bob/Qt/6.0.1/gcc_64/include/QtGui/qwindow.h:94:7: note: forward declaration of ‘class QVulkanInstance’
94 | class QVulkanInstance;
| ^~~~~~~~~~~~~~~
make[2]: *** [src/render/CMakeFiles/3DRender.dir/build.make:3815: src/render/CMakeFiles/3DRender.dir/surfaces/vulkaninstance.cpp.o] Error 1
make[2]: Leaving directory '/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf'
make[1]: *** [CMakeFiles/Makefile2:2164: src/render/CMakeFiles/3DRender.dir/all] Error 2
make[1]: Leaving directory '/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf'
make: *** [Makefile:144: all] Error 2
qt3d/6.0.1@qt/final:
qt3d/6.0.1@qt/final: ERROR: Package '9105b5b4ab5d474532cfc28699da368141e8a4cf' build failed
qt3d/6.0.1@qt/final: WARN: Build folder /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf
ERROR: qt3d/6.0.1@qt/final: Error in build() method, line 121
self.run('cmake --build . %s' % cmake.build_config)
ConanException: Error 2 while executing cmake --build

SGaist

Looks like Vulkan is not as optional as stated in your logs above.

From memory, you need that SDK.

ofmrew

@SGaist Thanks for all your help so far, but exactly what do I need because I have looked and I have yet to find an installer for the Vulkan SDK and QVulkanInstance. I am at a loss. You should know because Qt is part of the Khronos group. Please help, we are so close to having 3D installed.

One other question: can I have both -g=cmake and -g qmake and it I have the latter do I need a -g qmake_paths?

SGaist

The page I linked provides a link to the SDK download page.

@ofmrew said in 3D Install Qt6:

You should know because Qt is part of the Khronos group..

I think there's a mistake here. I do not work for the Qt Company.

ofmrew

@SGaist Sorry about that, bad assumption on my part. It makes the help even more outstanding. Can you answer the question: can I have both -g=cmake and -g qmake and it I have the latter do I need a -g qmake_paths?

Also, do you know of a good reference on installing Valkan, I downloaded the sdk from the URL you provided, but I am stuck on how to proceed. Thanks.

SGaist

@ofmrew said in 3D Install Qt6:

Can you answer the question: can I have both -g=cmake and -g qmake and it I have the latter do I need a -g qmake_paths?

Sorry, that one I currently do not know.

@ofmrew said in 3D Install Qt6:

Also, do you know of a good reference on installing Valkan, I downloaded the sdk from the URL you provided, but I am stuck on how to proceed. Thanks.

Which distribution are you using ? For Ubuntu based there are easy to follow instructions.

ofmrew

@SGaist said in 3D Install Qt6:

Ubuntu

I got these and executed them:

Ubuntu
AMD It's best to enable a PPA for the latest Mesa drivers. There is a PPA that packages and releases the latest changes straight from Mesa's Git. Add the PPA to your system and update. Then, upgrade your system. It will automatically upgrade your existing Mesa packages.

$ sudo add-apt-repository ppa:oibaf/graphics-drivers
$ sudo apt update
$ sudo apt upgrade
When it's done, install the Vulkan packages.

apt install libvulkan1 mesa-vulkan-drivers vulkan-utils

NVIDIA Ubuntu also has a great repository for the NVIDIA proprietary drivers. Add it to your system, and update Apt.

$ sudo add-apt-repository ppa:graphics-drivers/ppa
$ sudo apt upgrade
Now, install your drivers and Vulkan.
$ sudo apt install nvidia-graphics-drivers-396 nvidia-settings vulkan vulkan-utils

But the conan install failed:
final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/CMakeFiles/3DRender.dir/cmake_pch.hxx -o CMakeFiles/3DRender.dir/surfaces/vulkaninstance.cpp.o -c /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp
/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp: In lambda function:
/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp:54:34: error: invalid use of incomplete type ‘class QVulkanInstance’
54 | QVulkanInstance* v = new QVulkanInstance;
| ^~~~~~~~~~~~~~~
In file included from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/qbackingstore.h:46,
from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/QtGui:17,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCoreDepends:4,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCore:3,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/CMakeFiles/3DRender.dir/cmake_pch.hxx:5,
from <command-line>:
/home/bob/Qt/6.0.1/gcc_64/include/QtGui/qwindow.h:94:7: note: forward declaration of ‘class QVulkanInstance’
94 | class QVulkanInstance;
| ^~~~~~~~~~~~~~~
/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp:61:14: error: invalid use of incomplete type ‘class QVulkanInstance’
61 | v->setLayers({ "VK_LAYER_KHRONOS_validation" });
| ^~
In file included from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/qbackingstore.h:46,
from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/QtGui:17,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCoreDepends:4,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCore:3,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/CMakeFiles/3DRender.dir/cmake_pch.hxx:5,
from <command-line>:
/home/bob/Qt/6.0.1/gcc_64/include/QtGui/qwindow.h:94:7: note: forward declaration of ‘class QVulkanInstance’
94 | class QVulkanInstance;
| ^~~~~~~~~~~~~~~
/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/surfaces/vulkaninstance.cpp:63:15: error: invalid use of incomplete type ‘class QVulkanInstance’
63 | if (!v->create())
| ^~
In file included from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/qbackingstore.h:46,
from /home/bob/Qt/6.0.1/gcc_64/include/QtGui/QtGui:17,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCoreDepends:4,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/include/Qt3DCore/Qt3DCore:3,
from /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf/src/render/CMakeFiles/3DRender.dir/cmake_pch.hxx:5,
from <command-line>:
/home/bob/Qt/6.0.1/gcc_64/include/QtGui/qwindow.h:94:7: note: forward declaration of ‘class QVulkanInstance’
94 | class QVulkanInstance;
| ^~~~~~~~~~~~~~~
make[2]: *** [src/render/CMakeFiles/3DRender.dir/build.make:3815: src/render/CMakeFiles/3DRender.dir/surfaces/vulkaninstance.cpp.o] Error 1
make[2]: Leaving directory '/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf'
make[1]: *** [CMakeFiles/Makefile2:2164: src/render/CMakeFiles/3DRender.dir/all] Error 2
make[1]: Leaving directory '/home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf'
make: *** [Makefile:144: all] Error 2
qt3d/6.0.1@qt/final:
qt3d/6.0.1@qt/final: ERROR: Package '9105b5b4ab5d474532cfc28699da368141e8a4cf' build failed
qt3d/6.0.1@qt/final: WARN: Build folder /home/bob/.conan/data/qt3d/6.0.1/qt/final/build/9105b5b4ab5d474532cfc28699da368141e8a4cf
ERROR: qt3d/6.0.1@qt/final: Error in build() method, line 121
self.run('cmake --build . %s' % cmake.build_config)
ConanException: Error 2 while executing cmake --build .

What could be the problem?