Qt 6.0 build from source on Raspberry Pi 4 "Opengl functionality tests failed"

SGaist

Hi and welcome to devnet,

Did you restart from a clean state after your various tests ?

Kelenyche

Yes I have, no change to the error.

SGaist

Did you check the test logs to see what exactly has failed ?

Kelenyche

I have, but I'm not able to discern much of use from them. There's not really any mention of opengl in them, so I can't see exactly what's failing. I'd post the whole thing but the files are HUGE. Is that useful? Also fyi I'm limited in how often I can post since I'm new. :)

it does look like a lot of the actions had this failure:

Performing C++ SOURCE FILE Test HAVE_d2d1_1 failed with the following output:
Change Dir: /home/pi/Desktop/Qt6/src/CMakeFiles/CMakeTmp

I can't tell if that's useful.

SGaist

Might be a silly question but did you install the dev packages of the OpenGL libraries ?

Kelenyche

Yes, I've installed a bunch of different opengl packages based on similar threads around the internet.
fwiw I can't see it in the /usr/lib directory, but I'm not 100% that's where it should be.
running glxinfo "grep "OpenGL version" gives: 2.1 Mesa 19.3.2

So it's there, but I guess the Qt configuration is maybe looking in the wrong place for it?

SGaist

There's the catch: you have the normal package to use by application and you have their dev version for development purpose hence my question about them being installed.

Kelenyche

I'm not sure this is the issue - probably the command I ran to get the version only shows the normal package, I don't know how to show the dev package versions. To make sure I went back through all the steps I could find to install dev packages:
sudo apt-get install freeglut3
sudo apt-get install freeglut3-dev
sudo apt-get install binutils-gold
sudo apt-get install libglew-dev
sudo apt-get install mesa-common-dev
sudo apt-get install libglew1.5-dev libglm-dev
sudo apt-get install libgles2-mesa-dev
sudo apt-get install xorg-dev

A few of these installed packages I didn't have before. After a reboot and rerunning the Qt6 configuration, same issue.

SGaist

One thing that you can do is to install the build dependencies of the Qt 5 OpenGL package.

apt-get build-dep libqt5opengl5

Kelenyche

It seemed so promising! But the same error at the end.

I'll list out what I did so the next poor lost soul can follow along.
so for me that returned an error: You must put some source URIs in your sources.list.
I went to etc/apt/sources.list and uncommented the bottom three lines.
After retrying, it said two packages were missing, one of which had another dependent package that was missing.

sudo apt-get install libgtk-3-dev
sudo apt-get install libegl-mesa0
sudo apt-get install libgbm-dev

Then I retried your command, and it spent a while building everything. But like I said when I tried the ./configure stuff again I ended with the same message.

Kelenyche

So maybe it's worth noting the reason I'm building from source is because the online installer executable isn't running on my pi. I'm running the new 64-bit Raspberry Pi OS image, but it's not recognizing the 64-bit executable. Googling that hasn't been much help, it's mostly people that have mismatched the executable and operating system, but as far as I can tell, mine should match. Any insight there? If I get that working life might be a lot easier.

jsulm

@Kelenyche said in Qt 6.0 build from source on Raspberry Pi 4 "Opengl functionality tests failed":

but it's not recognizing the 64-bit executable

Do you mean the online installer from Qt Company web site? That one is for x86_64, not ARM.

Kelenyche

Ah, that makes sense. So that means if I'm gonna get this installed on a Pi I have to build from source then.

Kelenyche

Holy Geez I solved it!

I decided to just start going through the entire log that it blurts out after running the configure script. One of the first warnings was that I had the default build package (I forgot the name) instead of Ninja, but Qt is made to work with Ninja, so use the default at your own risk. I installed Ninja, and it configured just fine and is building now!

SGaist

Great !

Thanks for providing the solution.

Ninja is one point I did not think about.

hareendran-tl

@Kelenyche said in Qt 6.0 build from source on Raspberry Pi 4 "Opengl functionality tests failed":

Holy Geez I solved it!

I decided to just start going through the entire log that it blurts out after running the configure script. One of the first warnings was that I had the default build package (I forgot the name) instead of Ninja, but Qt is made to work with Ninja, so use the default at your own risk. I installed Ninja, and it configured just fine and is building now!

Hi,

I am just starting with qt and cross compiling. I got the same error with ubuntu 22 and raspberry pi3 64 bit. I followed this tutorial. https://wiki.qt.io/Cross-Compile_Qt_6_for_Raspberry_Pi.

My doubt is,
1: How to install Ninja?
2: How to configure with it?

Any help would be greatly appreciated.

jsulm

@hareendran-tl

Using apt (apt install ninja-build)
Pass this parameter to CMake: -GNinja

hareendran-tl

@jsulm
Thanks for the immediate reply.
1: ninja-build was already installed.
2: -GNinja argument was passed with the command.

I ran the following script

cmake ../qt5/ -GNinja -DCMAKE_BUILD_TYPE=Release -DINPUT_opengl=es2 -DQT_BUILD_EXAMPLES=OFF -DQT_BUILD_TESTS=OFF -DQT_HOST_PATH=$HOME/qt-host -DCMAKE_STAGING_PREFIX=$HOME/qt-raspi -DCMAKE_INSTALL_PREFIX=/usr/local/qt6 -DCMAKE_TOOLCHAIN_FILE=$HOME/toolchain.cmake -DQT_QMAKE_TARGET_MKSPEC=devices/linux-rasp-pi4-aarch64 -DQT_FEATURE_xcb=ON -DFEATURE_xcb_xlib=ON -DQT_FEATURE_xlib=ON

jsulm

@hareendran-tl And what is the problem?
You should now be able to build using ninja.

hareendran-tl

@jsulm
This is the error i getting.

ERROR: The OpenGL functionality tests failed! You might need to modify the OpenGL package search path by setting the OpenGL_DIR CMake variable to the OpenGL library's installation directory.

CMake Error at qtbase/cmake/QtBuildInformation.cmake:181 (message):
Check the configuration messages for an error that has occurred.
Call Stack (most recent call first):
qtbase/cmake/QtBuildInformation.cmake:21 (qt_configure_print_summary)
CMakeLists.txt:111 (qt_print_feature_summary)