Qt5 development primer

A Offline

At the compilation under Windows I have:
Creating qmake...
g++ -c -oproject.o -O -IC:\Users\user\Desktop\qt5-src\qtbase/qmake -IC:\Users\us
er\Desktop\qt5-src\qtbase/qmake/generators -IC:\Users\user\Desktop\qt5-src\qtbas
e/qmake/generators/unix -IC:\Users\user\Desktop\qt5-src\qtbase/qmake/generators/
win32 -IC:\Users\user\Desktop\qt5-src\qtbase/qmake/generators/mac -IC:\Users\use
r\Desktop\qt5-src\qtbase/qmake/generators/integrity -IC:\Users\user\Desktop\qt5-
src\qtbase/include -IC:\Users\user\Desktop\qt5-src\qtbase/include/QtCore -IC:\Us
ers\user\Desktop\qt5-src\qtbase/include/QtCore/5.0.0 -IC:\Users\user\Desktop\qt5
-src\qtbase/include/QtCore/5.0.0/QtCore -IC:\Users\user\Desktop\qt5-src\qtbase/s
rc/corelib/global -IC:\Users\user\Desktop\qt5-src\qtbase/mkspecs/win32-g++ -IC:
Users\user\Desktop\qt5-src\qtbase/tools/shared -DQT_NO_TEXTCODEC -DQT_NO_UNICODE
TABLES -DQT_LITE_COMPONENT -DQT_NO_COMPRESS -DUNICODE -DHAVE_QCONFIG_CPP -DQT_BU
ILD_QMAKE -DQT_NO_THREAD -DQT_NO_QOBJECT -DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM
-DQT_BOOTSTRAPPED -DQMAKE_OPENSOURCE_EDITION project.cpp
g++: CreateProcess: No such file or directory
mingw32-make: *** [project.o] Error 1
del /f project.o main.o makefile.o unixmake.o unixmake2.o mingw_make.o option.o
winmakefile.o projectgenerator.o property.o meta.o makefiledeps.o metamakefile.o
xmloutput.o pbuilder_pbx.o borland_bmake.o msvc_nmake.o msvc_vcproj.o msvc_vcxp
roj.o msvc_objectmodel.o msbuild_objectmodel.o registry.o gbuild.o cesdkhandler.
o qbitarray.o qbuffer.o qarraydata.o qbytearray.o qcryptographichash.o qvsnprint
f.o qbytearraymatcher.o qconfig.o qdatetime.o qdir.o qdiriterator.o qfiledevice.
o qfile.o qtemporaryfile.o qfileinfo.o qabstractfileengine.o qfilesystementry.o
qfilesystemengine.o qfilesystemengine_win.o qfilesystemiterator_win.o qfsfileeng
ine.o qfsfileengine_iterator.o qfsfileengine_win.o qglobal.o qhash.o qiodevice.o
qlibraryinfo.o qlist.o qlinkedlist.o qlocale.o qlocale_tools.o qlocale_win.o qm
alloc.o qmap.o qregexp.o qtextcodec.o qutfcodec.o qstring.o qstringlist.o qstrin
gbuilder.o qsystemerror.o qsystemlibrary.o qtextstream.o quuid.o qvector.o qsett
ings.o qsettings_win.o qvariant.o qmetatype.o qxmlstream.o qxmlutils.o qnumeric.
o qlogging.o
Could Not Find C:\Users\user\Desktop\qt5-src\qtbase\qmake\project.o
g++ -c -oproject.o -O -IC:\Users\user\Desktop\qt5-src\qtbase/qmake -IC:\Users\us
er\Desktop\qt5-src\qtbase/qmake/generators -IC:\Users\user\Desktop\qt5-src\qtbas
e/qmake/generators/unix -IC:\Users\user\Desktop\qt5-src\qtbase/qmake/generators/
win32 -IC:\Users\user\Desktop\qt5-src\qtbase/qmake/generators/mac -IC:\Users\use
r\Desktop\qt5-src\qtbase/qmake/generators/integrity -IC:\Users\user\Desktop\qt5-
src\qtbase/include -IC:\Users\user\Desktop\qt5-src\qtbase/include/QtCore -IC:\Us
ers\user\Desktop\qt5-src\qtbase/include/QtCore/5.0.0 -IC:\Users\user\Desktop\qt5
-src\qtbase/include/QtCore/5.0.0/QtCore -IC:\Users\user\Desktop\qt5-src\qtbase/s
rc/corelib/global -IC:\Users\user\Desktop\qt5-src\qtbase/mkspecs/win32-g++ -IC:
Users\user\Desktop\qt5-src\qtbase/tools/shared -DQT_NO_TEXTCODEC -DQT_NO_UNICODE
TABLES -DQT_LITE_COMPONENT -DQT_NO_COMPRESS -DUNICODE -DHAVE_QCONFIG_CPP -DQT_BU
ILD_QMAKE -DQT_NO_THREAD -DQT_NO_QOBJECT -DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM
-DQT_BOOTSTRAPPED -DQMAKE_OPENSOURCE_EDITION project.cpp
g++: CreateProcess: No such file or directory
mingw32-make: *** [project.o] Error 1
Building qmake failed, return code 2

*** qtbase/configure exited with non-zero status.

but if I cd qtbase/qmake/;mingw32-make all it work.

G Offline

On MAC I encountered a problem: Under the last version of XCode you have to download the "command lines tools" seperatly from the xcode settings in the downloads pane.

G Offline

I was getting "The Remote End Hung up Unexpectedly" when running "perl init-repository". I found that if I used the "-http" option at the end of that line, the failures stopped. It seems that the "git" protocol is a bit flaky. Making http the default in the "init-repository" script would make the process a bit more robust.

S Offline

You can also rerun the script with "-f". Doesn't fix git protocol, but often it works on second try.

G Offline

Yeah, unfortunately for me, re-runnng w/git kept failing at different points.

B Offline

Hi,
I'm new to command line compiling and Git.

Thanks to the excellent "guide":http://qt-project.org/wiki/Building_Qt_5_from_Git I was able to build Qt from source. Now, with the latest beta 2 release, I'd like to update Qt.

My question is simple:

Do I need to run configure after:

git pull
git submodule update --recursive

Or can I just run make again without doing that?

A suggestion would be to update the "Getting Updates" section to include this answer as maybe others would wonder if they need to do that too.

Thanks,
Brett

S Offline

Tricky. Depends on what has changed in the source code, really. If you have a solid CPU and a bit of time on your hands, you can definitely try just running make, and then if it fails, you should do a proper clean (git clean -dxf, check the link you provided for a submodule declaration), configure and make.

B Offline

Thanks for your post. I modified the wiki page updates section with a note that clean and configure may need to be re-run.

I Offline

I'm building on windows 7 x64 with msvc2010 sp1 nmake.

For some reason the naming convention is different then the beta release and incompatible with the vs-addin..

All my lib files, dll files etc are named Qt5[lib].dll/lib instead of Qt[lib]5.dll/lib

My config: configure -developer-build -opensource -nomake examples -nomake tests

L Offline

See http://lists.qt-project.org/pipermail/development/2012-October/007215.html

C Offline

Hi,

First I have setup qt5 (both with the linux birnary file and by compiling it) on an Ubuntu 12.04 (and 11.10) KVM virtual machine. But I can't launch any graphical qt program. I have issue with QPainter: that kind of mistakes:

@cedric@cedric-virtual-machine:~/Qt5.0.0beta2/5.0.0-beta2/gcc/bin$ ./assistant
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::font: Painter not active
QPainter::pen: Painter not active
...@

So I tried on a windows 32 bits virtual machine. First I installed it with the binary but I couldn't find our the right microsoft compiler so it could work. So I tryed to compile it with mingw32-make. It worked with the following config:
@configure -platform win32-g++ -opengl desktop@
Yeah I couldn't find the right version of direct X sdk so I had some issue and choose to use the opengl option.

This version doesn't work with qt creator. I don't know if it is suppoed to? I have an issue with "ABI detection failed. Make sur to use a matching compiler when building. No qml viewer." But I can launch the program named qmlviewer.exe. Also I can compile the following application with qmake.

pro file:
@######################################################################

Automatically generated by qmake (3.0) sam. 15. déc. 15:49:19 2012

######################################################################

QT += widgets
TEMPLATE = app
TARGET = test03withoutCreator
DEPENDPATH += .
INCLUDEPATH += .

Input

SOURCES += main.cpp
@

main.cpp
@#include <QGuiApplication>
#include <QPushButton>

Q_DECL_EXPORT int main(int argc, char *argv[]){
QGuiApplication app(argc, argv);

QPushButton button("work");
button.show();

return app.exec(&#41;;

}@

but then, I have no idea how to launch it. I did:
@qmake
mingw32-make release@
Then I put the binary file in qtbase/bin, but I when I launch the application, I get the following message:
"This application has requested the runtime to terminate it in an unusual way."
But the exemples and demos can be launch without any dll in their direcotry. I don't get how that is possible.

Someone know what I should do so I can compile and launch application?

Sincerly,

Cédric

F Offline

I'm having trouble building the final release on Windows 7 x64 with both VS2008 and VS2012. I have ActivePerl and Python 2.7 installed and in the path, and in both cases when I run "configure" I get this error:
@
'T:\home\Qt\5.0.0\qtbase\configure.exe' is not recognized as an internal or external command, operable program or batch file.
*** qtbase/configure exited with non-zero status.@

Any ideas?

S Offline

-You should be running configure.exe on windows, not the bash script.-

Add a file named ".gitignore" to the root folder or comment out line 45 in configure.bat.

J Offline

After several failed attempts at building, here's how I finally managed to get QT5 to build with Nuwen.net's MinGW 9.4, on Windows 7 64 bit SP1 without webkit.

I already had Nuwen's mingw 9.4 installed (9.5 is now available), this can be obtained from http://www.nuwen.net/mingw.html

This needs to be extracted to c:\mingw or similar, and c:\mingw\bin will need to be in the PATH env variable.

Then I copied c:\mingw\bin\make.exe to c:\mingw\bin\mingw32-make.exe

I then downloaded and installed the following:

http://www.python.org/ftp/python/3.3.0/python-3.3.0.amd64.msi
http://files.rubyforge.vm.bytemark.co.uk/rubyinstaller/rubyinstaller-1.9.3-p362.exe
http://downloads.activestate.com/ActivePerl/releases/5.16.1.1601/ActivePerl-5.16.1.1601-MSWin32-x64-296175.msi
https://msysgit.googlecode.com/files/Git-1.8.0-preview20121022.exe

I used the installers to set the path for python, ruby and perl.

I downloaded QT5 (27th Dec 2012):

git clone git://gitorious.org/qt/qt5.git qt5
cd qt5
perl init-repository

Configured QT5:

configure -developer-build -opensource -nomake examples -nomake tests -qt-pcre -qt-libjpeg -opengl desktop

Configure informed me that webkit would not be built due to a missing dependency, so no additional parameters were required to disable this.
I have an ATi Radeon graphics driver with builtin OpenGL support
By default configure sets pcre to 'system' at one point I downloaded and built the latest version of pcre, including the pcre16 library, I placed this into my system path, but ld was still unable to locate the library and there was no means of passing the -L parameter to ld from what I can tell, build would fail with 'unable to locate pcre16', once you specify -qt-pcre as per the above, the build will use the embedded pcre library and magically succeed.
Again, for me, build would fail without specifying -qt-libjpeg

I then simply ran 'make'

Good luck!

D Offline

What is the url for the development branch for qt5?
git://gitorious.org/qt/qt5.git does not have modifications since December, and git://gitorious.org/qt/qt.git still contains 4.8

thanks

S Offline

Every module has a separate git repository, with the exception of QtCore, QtNetwork, QtGui, they are in qtbase.

J Offline

[quote author="sierdzio" date="1357749703"]Every module has a separate git repository, with the exception of QtCore, QtNetwork, QtGui, they are in qtbase.[/quote]Actually,

qtbase.git contains:

Qt Concurrent
Qt Core
Qt D-Bus
Qt GUI
Qt Network
Qt OpenGL
Qt Print Support
Qt SQL
Qt Test
Qt Widgets
Qt XML

qtdeclarative.git contains:

Qt QML
Qt Quick

S Offline

Ah, I've been punished for my laziness, thank you for that ;)

Y Offline

Hi, I've succeed with compiling QT5 for arm (raspberry pi) what is not working for me is localized keyboard input in eglfs. When i use loadkeys de.kmap and than start an application. The keyboard is again Generic (US). But in console localized keyboard works. Did I miss something in compile or programming time?

J Offline

Hi yeckel,

I don't have any experience with the Raspberry Pi, but I recommend posting your question in the "Qt Project Mobile and Embedded subforum":http://qt-project.org/forums/viewforum/11/ or the "Raspberry Pi forum":http://www.raspberrypi.org/phpBB3/