I am trying to compile qGo, after installing qt5
git clone https://github.com/pzorin/qgo.git
cd qgo
qmake
make
sudo make install
Right now the latest error is saying it can't find multimedia
# make
cd src/ && ( test -e Makefile || /usr/lib/x86_64-linux-gnu/qt5/bin/qmake /home/jdm/Downloads/qgo/src/src.pro -o Makefile ) && make -f Makefile
Project ERROR: Unknown module(s) in QT: multimedia
make: *** [sub-src-make_first] Error 3
I guessed the library libqt5multimedia5 based on this question, but the computer it says its already there and the error persists.
libqt5multimedia5 is already the newest version.
There is another similar question but the user answered his own question. I am not sure how it applies here:
"Project ERROR: Unknown module(s) in QT: multimedia" when building my project with fresh static Qt5.3.0
I'm not able to post a comment, so I will write it as an answer. Your problem has been solved here:
https://forum.qt.io/topic/27608/unknown-module-multimedia/6
In order to handle the issue you should try installing packages that are absent:
sudo apt-get install qtmultimedia5-dev libqt5multimediawidgets5 libqt5multimedia5-plugins libqt5multimedia5
and restart your Qt Creator after that.
Cheers.
UPDATE. If it will not work, try another solution:
sudo apt-get update
sudo apt-get build-dep qtmultimedia5-dev
sudo apt-get source --compile qtmultimedia5-dev
UPDATE 2 For me the solution was the following:
Download sources from http://download.qt.io/development_releases/qt/5.4/5.4.0-rc/submodules/
Build them, add the library manually.
Related
I installed a fresh new copy of QTCreator on a Ubuntu VM. It is a clean virtual machine. Then I create a dummy QTQuick project with almost nothing in it. But creator fails to compile, saying CMAKE_CXX_COMPILER not found. See message below:
error: No CMAKE_CXX_COMPILER could be found. Tell CMake where to find the compiler by
setting either the environment variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER
to the full path to the compiler, or to the compiler name if it is in the PATH.
Am I missing the compiler? This is a fresh install and I don't understand. Creator is showing the only compiler option. See the screen shot below:
Any ideas why it does not compile from a clean install, using all default option? The compiler must be there.
thank you.
I followed these instructions and it worked finally.
sudo apt-get update && sudo apt-get upgrade
sudo apt-get -y install build-essential openssl libssl-dev libssl1.0 libgl1-mesa-dev libqt5x11extras5
downloaded the install and made it executable
chmod +x qt*.run
then it worked.
Here is the page with more explanations:
https://web.stanford.edu/dept/cs_edu/resources/qt/install-linux
I would like to cross compile a qt project on raspberry. I finished all the installing steps and the configuration of qt creator. But when i tried but when i tried to compile an example project I got an error
cannot find -lsbml
cannot find -lstdc++
First make sure that these libs are already installed:
sudo apt-get install sbml
sudo apt-get install stdc++
I am not sure about the names, but you can check them via apt-cache like:
apt-cache search sbml | less
You can use this to get all packages which are related to the corresponding library. Choose the right package and install it via apt-get install ...
Now try again. When the compile-step still fails you need to specify the lib-directories in the .pro-file like:
LIBS += -L<Path_to_sbml> -lsbml -L<Path_to_stdc++> -lstdc++
Hope that helps you.
I have self-compiled Qt 5.4.1 and installed in /opt/qt-5.4.1.
However, I encountered an error while trying to 'qmake' my project file:
Project ERROR: Unknown module(s) in QT: webkitwidgets
I did sudo apt-get install libqt5webkit5-dev but the error persists.
I suspect then that apt-get install does not work when Qt-Core was self-compiled. The Qt Webkit source is available on https://qt.gitorious.org/qt
The question is, how and where should I install Webkit from source so that it can be detected while running qmake?
Probably you missed compilation of webkit while compilation of Qt. Read here how to resolve this issue:
https://forum.qt.io/topic/40378/solved-linux-unknown-module-s-in-qt-webkitwidgets
QtWebKit is not built anymore by default. You can build it after you have a proper build of Qt. Once you have your build of Qt clone the QtWebKit repo:
git clone https://github.com/qt/qtwebkit.git
then, make a new dir for the build files and from that directory enter the command:
/opt/qt-5.4.1/bin/qmake <path/to/qtwebkit>
make -j<n>
make install
Now you should be able to use QtWebKit with your build.
might want to try:
sudo apt-get install libqt5webkit5
and
sudo apt-get install libqt5webkit5-dev
I am new to Ubuntu and i am getting a message while building Qt 4.8.3 on Ubuntu 12:
Basic XLib functionality test failed! You might need to modify the
include and library search paths by editing QMAKE_INCDIR_X11 and
QMAKE_LIBDIR_X11 in
/home/majidmax/qt-everywhere-opensource-src-4.8.3/mkspecs/linux-g++.
what the proper steps to build Qt on Ubuntu?
http://qt-project.org/doc/qt-4.8/requirements-x11.html
the website provide the package list which must be installed
try it~
These are the packages you need to install and you'll be good to go. I just had this same problem and this worked for me. These came from the link provided by Garlic Tseng in the accepted answer. I am just putting these here for convenience:
libfontconfig1-dev
libfreetype6-dev
libx11-dev
libxcursor-dev
libxext-dev
libxfixes-dev
libxft-dev
libxi-dev
libxrandr-dev
libxrender-dev
One (copy pastable) command to install all:
sudo apt-get install libfontconfig1-dev libfreetype6-dev libx11-dev libxcursor-dev libxext-dev libxfixes-dev libxft-dev libxi-dev libxrandr-dev libxrender-dev
What about sudo apt-get build-dep qt4-qmake?
Try to run that command before you compile Qt (on Debian-like distros).
Same problem i faced in fedora20 (64-bit) for Qt-4.8.3
1)- yum install libXext-devel
(internet connectivity should be there for checking the dependency and install all dependency).
2)- ./configure
3)- make
4)- make install
5)- Installation finish successfully.
The error message doesn't give a lot of information as to the actual issue of XLib failing.
To get more information on the error causing it to fail you can 'make' the xlib tests:
$ cd <Qt_Source_Directory>/config.tests/x11/xlib/
$ make
g++ -Wl,-O1 -o xlib xlib.o -L/usr/X11R6/lib -ltcg -lXext -lX11 -lm
/usr/bin/ld: cannot find -ltcg
collect2: error: ld returned 1 exit status
make: *** [xlib] Error 1
In my case above, I was using -ltcg which was being interpreted as an explicit library to include. I was using this option as it is listed on the qt 4.8 configure options as:
Use Link Time Code Generation
When I looked at the configure options using ./configure --help I noticed that this option isn't listed. Removing the option from my configure line fixed my issue.
what the proper steps to build Qt on Ubuntu?
Check the Qt supported Platforms.
Check Qt for X11 requirements.
3a. Check steps to install Qt on X11 platforms(along with build).
or
3b. Check steps to build static Qt.
Exact duplicate:
/usr/bin/ld: cannot find -lfreetype qt
Hi, I'm writing a cross-platform Qt application for a graduate project.
I've been working with Qt 4.3, but just recently upgraded to 4.5.
On my Windows machine, it works great. No problems. However, on my Linux machine, things aren't quite so nice.
I'm using the Qt creator and it goes through the compiling process making all the object files. But then it makes a call to:
g++ -Wl, -rpath, (all the .o files here) -L/media/HOME/Qt-Linux-4.5/qt/lib -lQtGui -L/media/HOME/Qt-Linux-4.5/qt/lib -L/usr/X11R6/lib -pthread -lfreetype -lgobject-2.0 -lrt -lglib-2.0 -ldl -lpthread
It gives me the error:
/usr/bin/ld: cannot find -lfreetype
collect2: ld returned 1 exit status
Now, I can locate libfreetype.so.6 and libfreetype.so.6.3.18 in my /usr/lib folders. I've tried running this inserting -L/usr/lib, but that didn't work. I've tried ln -s /usr/lib/libfreetype.so.6.3.18 libfreetype.so, I've tried editing the ld.so.conf file.
I'm trying this on an eeepc with Eeebuntu, if that helps.
Help!! I've been trying to get this to work for two days. I don't know what else I can do. Any suggestions?
Thanks much!
Brent
You missing dev librart, install libfreetypeX-dev, in debian lenny it would be apt-get install libfreetype6-dev
sudo apt-get install libfreetype6-dev
I've tried ln -s /usr/lib/libfreetype.so.6.3.18 libfreetype.so
Never do things like that unless you want to break your system and learn how to fix it
These I had to install on Kubuntu 9.04 64 bit in order to get a simple test app to build:
sudo apt-get install libfreetype6-dev
sudo apt-get install libavahi-gobject-dev
sudo apt-get install libSM-dev
sudo apt-get install libXrender-dev
sudo apt-get install libfontconfig-dev
sudo apt-get install libXext-dev
Edit: To get OpenGL to build I also had to install libgl1-mesa-dev and freeglut3-dev.
Edit2: Audio required libphonon-dev.
Thanks a lot! Installing the dev libraries got it to work. there were about five more libraries I had to install as well, but once I got them all, everything compiles just fine. Thanks a lot everyone!
When you did your ln -s /usr/lib/libfreetype.so.6.3.18 libfreetype.so, did you make sure that the libfreetype.so symlink ended up in /usr/lib too? To be sure, run ls -l /usr/lib/libfreetype.so and make sure it says what you expect it to.