Problems compiling Qt 5.8 on Debian 8.7.1
-
About my .pro file : It is very simple and there is nothing special about it. It has worked just fine on Windows and Kubuntu.
This is apparently a Debian problem when configuring Qt.
I found a reference to it in this post :
I made a mistake in 'configure' script. I didn't know that Debian had a separate package for QtGL extension, and 'configure' checks only if GL library is installed and if it is it assumes that QtGL is built-in into Qt (as in my RedHat ). You will have to configure without GL then.
It would take somebody more knowledgeable than me to fully understand the above.
So I have tried to compile Qt using
configure -no-opengl, but have now compilation errors in Qt itself like this:error: undefined reference to 'vtable for QQuickFramebufferObject'The manual describes this class as :
The QQuickFramebufferObject class is a convenience class for integrating OpenGL rendering using a framebuffer object (FBO) with Qt Quick.
What more do I need to do to to get a viable version of Qt on Debian ?
-
Did you install the OpenGL dev packages on your system ?
-
When calling configure again, did you do it from a clean state ?
In any case, what is the configure line you used to build Qt ?
-
@Harry123
hi, do you find way out ?
i also meet the same problem on cross compiling for my rpi3. my ENV is Qt5.7 + centos (x64).
https://forum.qt.io/topic/76928/qt-on-rpi3-debug-info-how-to-fix/37 -
What exact configure options did you give ?
-
@SGaist
my configure is :
"./configure -release -opengl es2 -skip webengine -device linux-rasp-pi2-g++ -device-option CROSS_COMPILE=~/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf- -sysroot ~/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix ~/raspi/qt5pi -hostprefix ~/raspi/qt5 -v "
my host is centos 7, the target is raspberry pi3, trying with cross compiler way,and should i take "-no-opengl" do you think? -
@JiujiuTong wait a minute, there's a problem here, you are mixing a cross-compilation problem which is not related to the problem at hand for @Harry123 which is just trying to compile Qt for its desktop.
@Harry123 Can you share the configure line you used to compile Qt on your machine ?
-
Can you check with
-opengl desktop?I'd recommend doing out of source builds. That way you can just nuke the build folder is something goes wrong.
-
@SGaist :
It wouldn't work with
-opengl desktopbecause already when I used just./configureI had a message about opengl missing.I have anyway given up on compiling the sources -
configuresimply doesn't do the job correctly with the default flags, and each try takes hours.I have taken to using instead the online installer, which installs a viable version optionally with the sources.
Would you know if I can use the online installer to install directly into the
/usrfolders such as/usr/bin,/usr/includeetc. ? Or after the installation to copy the installed folders to there? -
In that case it means you don't have the OpenGL dev package installed.
You can't and you shouldn't even try. You'll be clearly messing with your distribution installation which is a very bad idea.
If you want to share your Qt installation with several users on your machine then use the default which is /opt otherwise, you can also simply install it in your home folder.
-
That's not a good idea. You are trying to replace your system Qt installation which has been built by the Debian folks in a state known to work for them.
Why do you want to replace it ?
If you want the Debian variant of Qt 5.8 then install the
experimentalversion of Debian. -
@SGaist :
OK, I gave up on this idea. Unfortunate that a repository does not exist for QT 5.8 (Debian experimental only contains parts).
I will stay with the online installation and will give up on my ambition to compile Qt.
Too bad, as I wanted a real debug version for easier debugging. -
Like I already wrote, there seems to be something missing on your system.
You should be able to build Qt 5.8 without any problem on Debian.
