Unsolved Qt6 Android CMake project fails at start: Failed to find Qt component "Core" config file at ""

[advm]

Hello, I have problem when I create new QtQuick project with Qt6 android with CMake. The CMake fails immediately after creation of the project:

CMake Error at CMakeLists.txt:28 (find_package):
  Found package configuration file:

    C:/Qt/6.0.0/android_armv7/lib/cmake/Qt6/Qt6Config.cmake

  but it set Qt6_FOUND to FALSE so package "Qt6" is considered to be NOT
  FOUND.  Reason given by package:

  Failed to find Qt component "Core" config file at ""

  Failed to find Qt component "Quick" config file at ""

I have tried to solve it and I found similar bugs already reported but still could not find solution. Any suggestion or help is welcome. Thanks in advance.

UPDATE: I noticed too, that after I install new android kit(for example 5.12.10 x86 and armv7) via MaintenanceTool all my Qt6 android kits are deleted. But msvc and mingw Qt6 kits are not deleted.

[Jhorns2]

I am having the same problem, but with GCC

[Jhorns2]

Are you developing on a Linux VM? After some troubleshooting I found I had to install OpenGL.

sudo apt-get install libgl1-mesa-dev

I found my problem by doing the following.

To troubleshoot this, you can do the following. Go to directory with your CMakeLists.txt for your project. Open a shell there.

Set the CMAKE_PREFIX_PATH to wherever you installed Qt (your path will be different and you are using android)
Here's what mine looked like:
export $CMAKE_PREFIX_PATH=/home/dev/Qt/6.0.0/gcc_64

mkdir build
cd build
cmake ..

My output is:

-- Looking for C++ include pthread.h
-- Looking for C++ include 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
-- Could NOT find OpenGL (missing: OPENGL_opengl_LIBRARY OPENGL_glx_LIBRARY OPENGL_INCLUDE_DIR)
-- Could NOT find WrapOpenGL (missing: WrapOpenGL_FOUND)
CMake Warning at /usr/share/cmake-3.16/Modules/CMakeFindDependencyMacro.cmake:47 (find_package):
Found package configuration file:

/home/dev/Qt/6.0.0/gcc_64/lib/cmake/Qt6Gui/Qt6GuiConfig.cmake

but it set Qt6Gui_FOUND to FALSE so package "Qt6Gui" is considered to be
NOT FOUND. Reason given by package:

Qt6Gui could not be found because dependency WrapOpenGL could not be found.

Call Stack (most recent call first):
/home/dev/Qt/6.0.0/gcc_64/lib/cmake/Qt6Quick/Qt6QuickDependencies.cmake:86 (find_dependency)
/home/dev/Qt/6.0.0/gcc_64/lib/cmake/Qt6Quick/Qt6QuickConfig.cmake:38 (include)
/home/dev/Qt/6.0.0/gcc_64/lib/cmake/Qt6/Qt6Config.cmake:83 (find_package)
CMakeLists.txt:28 (find_package)

CMake Warning at /home/dev/Qt/6.0.0/gcc_64/lib/cmake/Qt6/Qt6Config.cmake:83 (find_package):
Found package configuration file:

/home/dev/Qt/6.0.0/gcc_64/lib/cmake/Qt6Quick/Qt6QuickConfig.cmake

but it set Qt6Quick_FOUND to FALSE so package "Qt6Quick" is considered to
be NOT FOUND. Reason given by package:

The following imported targets are referenced, but are missing: Qt6::Qml
Qt6::QmlModels Qt6::QmlModelsPrivate Qt6::QmlPrivate

Call Stack (most recent call first):
CMakeLists.txt:28 (find_package)

CMake Error at CMakeLists.txt:28 (find_package):
Found package configuration file:

/home/dev/Qt/6.0.0/gcc_64/lib/cmake/Qt6/Qt6Config.cmake

but it set Qt6_FOUND to FALSE so package "Qt6" is considered to be NOT
FOUND. Reason given by package:

Failed to find Qt component "Quick" config file at ""

-- Configuring incomplete, errors occurred!
See also "/home/dev/NodeDev/build/CMakeFiles/CMakeOutput.log".
See also "/home/dev/NodeDev/build/CMakeFiles/CMakeError.log".

[advm]

@Jhorns2

Are you developing on a Linux VM?

No, I am on Windows.

After it deleted my Qt6 android kits(as I mentioned in my Update), I reinstalled the Kits and it works now. There is no problem with finding components. I don't know what caused the error.

But I also noticed other small problem like: Creating Template Android project, creates the project(android folder), but is not displaying it in project structure in QtCreator even that I have this line in CMakeLists.txt:

set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")

and it displays error Could not update the project file "C:\Users\user\QtProjects\qttutorials\Test\."

But its ok, this problem is not related to the posted Question.

[Jhorns2]

Sounds like you have it sorted. Good luck.

[beeka]

I had this issue with Qt6.2.2 on Fedora 35 in a VM... I had to install the GL libraries but it seemed that mesa wasn't right. What worked for me is:

sudo dnf install libglvnd-devel

PS: Sorry for the the necropost... but this was the closest thread to my issue and the GL dev library hint was what helped me.

[Frostybeard 0]

I have the issue described by jhorns above and am running Ubuntu 20.04.
I installed the 2 packages: libgl1-mesa-dev, libglvnd-devel
I still get similar OpenGL errors in the CMake phase.

[jsulm]

@Frostybeard-0 said in Qt6 Android CMake project fails at start: Failed to find Qt component "Core" config file at "":

I still get similar OpenGL errors in the CMake phase

Can you post those?

[danielsanchez]

Think is late but I had the same error with Ubuntu 22.04 and Clion, so to fix this i installed libgl1-mesa-dev and libglvnd-dev libraries, then Clion will ask for 'Qt CMake prefix path', and you need to choose the directory where the files are stored, in my case was:
/y/y/y/Qt/6.3.1/gcc_64/lib/cmake

Now, it works. Hope it helps.