Qt5 development primer

RazrFalcon

Can't configure on ArchLinux x64

bq. No QPA platform plugin enabled!
If you really want to build without a QPA platform plugin you must pass
-no-xcb and -no-wayland to configure. Doing this will produce a Qt that
cannot run GUI applications.

But libxcb, mesa and gperf are installed.

Any suggestions?
Thanks.

dangelog

Add the option -verbose to configure to figure out which test is failing.

Be sure to install almost all xcb-related packages from your distribution, esp. the ones related to the various X extensions. Double check also their version.

RazrFalcon

Thanks. Verbose helped.

Here is my installed xcb-package list:
extra/libxcb
extra/xcb-proto
extra/xcb-util
extra/xcb-util-image
extra/xcb-util-keysyms
extra/xcb-util-renderutil
extra/xcb-util-wm

RazrFalcon

Hello again. I have a new error:

@cd qtsvg/ && make -f Makefile
make[1]: Entering directory /media/data/Additional/Sources/qt5/qtsvg' /media/data/Additional/Sources/qt5/qtbase/bin/qmake QMAKE_ABSOLUTE_SOURCE_PATH=/media/data/Additional/Sources/qt5/qtbase -o Makefile qtsvg.pro QMAKESPEC has not been set, so configuration cannot be deduced. Error processing project file: qtsvg.pro make[1]: *** [Makefile] Error 3 make[1]: Leaving directory /media/data/Additional/Sources/qt5/qtsvg'
make: *** [module-qtsvg-make_default] Error 2@

But all other moduls are build well. Error appears after hour of compilation, not at start.

oneWonders

Okay it was probably all broken before as i hadn't installed the right prerequisites (the ubuntu 11.10 prerequisite had not been added to the instructions).
i.e.
[code]on Ubuntu Oneiric:

sudo apt-get install libxcb.* libglu1-mesa-dev[/code]

as oppossed to:
[code]on Ubuntu/Debian:

sudo aptitude install ~nlibxcb.*

[/code]

I now get this error on compilation:
[code]In file included from ../3rdparty/freetype/src/autofit/autofit.c:23:0:
../3rdparty/freetype/src/autofit/afhints.c: In function ‘af_glyph_hints_reload’:
../3rdparty/freetype/src/autofit/afhints.c:642:21: warning: variable ‘first’ set but not used [-Wunused-but-set-variable]
g++ -c -include .pch/debug-shared/QtPlatformSupport -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC -DQT_SHARED -DQT_NO_WAYLAND -DQT_NO_CORESERVICES -DQT_BUILD_PLATFORMSUPPORT_LIB -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_NO_CAST_FROM_ASCII -DQT_COMPILES_IN_HARFBUZZ -DQT_NO_FONTCONFIG -DFT2_BUILD_LIBRARY -DQT_COMPILES_IN_HARFBUZZ -DQT_GUI_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_HAVE_SSE3 -DQT_HAVE_SSSE3 -DQT_HAVE_SSE4_1 -DQT_HAVE_SSE4_2 -DQT_HAVE_AVX -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../mkspecs/linux-g++ -I. -I../../include/QtCore -I../../include/QtCore/5.0.0 -I../../include/QtCore/5.0.0/QtCore -I../../include/QtGui/5.0.0 -I../../include/QtGui/5.0.0/QtGui -I../../include/QtGui -I../../include -I../../include/QtPlatformSupport/5.0.0 -I../../include/QtPlatformSupport/5.0.0/QtPlatformSupport -I../../include/QtPlatformSupport -I../../include -I.rcc/debug-shared -I../3rdparty/harfbuzz/src -I../3rdparty/freetype/builds/unix -I../3rdparty/freetype/src -I../3rdparty/freetype/include -I/usr/X11R6/include -I.moc/debug-shared -o .obj/debug-shared/qglxconvenience.o glxconvenience/qglxconvenience.cpp
glxconvenience/qglxconvenience.cpp:47:36: fatal error: X11/extensions/Xrender.h: No such file or directory
compilation terminated.
make[2]: *** [.obj/debug-shared/qglxconvenience.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory /home/daniel/qt5/qtbase/src/platformsupport' make[1]: *** [sub-platformsupport-make_default-ordered] Error 2 make[1]: Leaving directory /home/daniel/qt5/qtbase'
make: *** [module-qtbase-make_default] Error 2
[/code]

So i was trying to work out what i was missing in terms of dependencies. Considering i installed libglu1-mesa-dev i am not sure.

werispaul

[quote author="werispaul" date="1328263852"]Actually i'm trying to compile the current git master using Win 7 and VS2010 without success.[/quote]
Finally got it working. In between I've switched from Strawberry Perl to ActivePerl. I'm not sure if it was the crux, but an option to keep in mind (as well as the order of perl in the system PATH, saw the wiki note quite late).

? This user is from outside of this forum

Let me join the ranks of people, for whom building Qt5 has failed.

Using gcc 4.6.2 in Windows 7 x64 environment.

The last console output before building failed (after spending 3 hours on it :( )

bq. mingw32-make[3]: Leaving directory C:/Users/Dian/qt5/qtbase/src/widgets' mingw32-make[2]: Leaving directory C:/Users/Dian/qt5/qtbase/src/widgets'
cd src\testlib\ && mingw32-make -f Makefile
mingw32-make[2]: Entering directory C:/Users/Dian/qt5/qtbase/src/testlib' mingw32-make -f Makefile.Debug all mingw32-make[3]: Entering directory C:/Users/Dian/qt5/qtbase/src/testlib'
g++ -c -fno-keep-inline-dllexport -g -Wall -frtti -fexceptions -mthreads -DQT_SH
ARED -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_AS
CII -DQTESTLIB_MAKEDLL -DQT_NO_DATASTREAM -DQT_MAKEDLL -DQT_ASCII_CAST_WARNINGS
-DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -D_USE_MATH_DEFINES -DQT_DLL -DQT_CORE_L
IB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -
I"....\include\QtCore" -I"....\include" -I"." -I"....\include\QtTest\5.0.0" -
I"....\include\QtTest\5.0.0\QtTest" -I"....\include\QtTest" -I"....\include"
-I"tmp\rcc\debug_shared" -I"tmp" -I"tmp\moc\debug_shared" -I"....\mkspecs\win32
-g++" -o tmp\obj\debug_shared\qtestcase.o qtestcase.cpp
qtestcase.cpp:73:21: fatal error: crtdbg.h: No such file or directory
compilation terminated.
mingw32-make[3]: *** [tmp/obj/debug_shared/qtestcase.o] Error 1
mingw32-make[3]: Leaving directory C:/Users/Dian/qt5/qtbase/src/testlib' mingw32-make[2]: *** [debug-all] Error 2 mingw32-make[2]: Leaving directory C:/Users/Dian/qt5/qtbase/src/testlib'
mingw32-make[1]: *** [sub-testlib-make_default-ordered] Error 2
mingw32-make[1]: Leaving directory `C:/Users/Dian/qt5/qtbase'
mingw32-make: *** [module-qtbase-make_default] Error 2

Any ideas?
The missing file I actually do have on my PC, in:
C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\crt\src\crtdbg.h
But what does it have to do with anything, since I am using the GCC toolchain?

Also, when I configured Qt I used "-nomake tests" - shouldn't that result in skipping qttest?

Harry443

Can someone provide a link for Qt 5 Download??

sierdzio

git clone git://gitorious.org/qt/qt5.git qt5

"Building Qt5 from Git.":http://developer.qt.nokia.com/wiki/Building_Qt_5_from_Git

kkoehne

@oneWonders: I just updated the package dependencies on the wiki, hope all are listed now (it's not that often that one has a clean system to start on ;)

@werispaul: Yes, you need ActiveState perl, and actually also a recent version. But the wiki page already points that out...

@ddriver: No idea. All I can tell you is that most people developing Qt on Windows are using MSVC compilers (MSVC2008, MSVC2010).

? This user is from outside of this forum

Yes, it seems I will have to give it another go using MSVC2010, I am really itching to play a bit with QtQuick 2 :)

EDIT: ARGHHHHHHHHHHH ^%$^@#$@
Naturally, after wasting a ton of time the webkit failed, and just to make things even more irritating, when I configure with -no-webkit it says "Unknown option -no-webkit" even thou -no-webkit is listed in the configure options... WTH?

Also "nmake confclean" doesn't work, returns "NMAKE : fatal error U1073: don't know how to make 'confclean'"

Also, I tried installing ICU so I can build webkit since the configure utility option doesn't work, and the install procedure for ICU involves files that are not even present in the package.

I am so very, very angry I hardly contain from beating my hardware, even thou this is all the lousy software's fault...

I get it that it is free software, prior to final stage, but can it really be that bad? I have build Qt from sources donzes of times and different versions, and it was always effortless.

pierrevr

I will add my failure to this thread.

I managed to compile Qt without too many problems by specifying the -prefix ${ROOT}/qtbase (or -developer-build, to be exact). If I remember correctly, with the -developer-build, I still had some installation issues once qtbase passed. I ended up having to manually run install for each submodule...

However, when trying to build for the target platform, with -prefix /usr/lib/qt, as I want it on the target, I run into an error once qtbase is built:

@
cd qtsvg/ && make -f Makefile
make[1]: Entering directory /home/pvr/qt5-build-neon/qtsvg' cd src/ && /home/pvr/qt5-build-neon/qtbase/bin/qmake /home/pvr/qt5/qtsvg/src/src.pro QMAKE_ABSOLUTE_SOURCE_PATH=/home/pvr/qt5/qtbase -o Makefile QMAKESPEC has not been set, so configuration cannot be deduced. Error processing project file: /home/pvr/qt5/qtsvg/src/src.pro make[1]: *** [src/Makefile] Error 3 make[1]: Leaving directory /home/pvr/qt5-build-neon/qtsvg'
make: *** [module-qtsvg-make_default] Error 2
@

So I tried exporting QMAKESPEC as the path to my mkspec, but then I get the following error:

@
cd svg/ && /home/pvr/qt5-build-neon/qtbase/bin/qmake /home/pvr/qt5/qtsvg/src/svg/svg.pro
QMAKE_ABSOLUTE_SOURCE_PATH=/home/pvr/qt5/qtbase -o Makefile
Project ERROR: Cannot load qmodule.pri!
make[2]: *** [svg/Makefile] Error 2
make[2]: Leaving directory /home/pvr/qt5-build-neon/qtsvg/src' make[1]: *** [module-qtsvg-src-make_default] Error 2 make[1]: Leaving directory /home/pvr/qt5-build-neon/qtsvg'
make: *** [module-qtsvg-make_default] Error 2
@

So my question is essentially, is it obligatory to specify the prefix as the path to qtbase? Has anyone else managed to build qt with a different prefix?

edit:
I should add that I am cross-compiling from x86 to an ARM board (iMX515). I built Qt4.8 with no problems previously...

Loaden

I can't build with different prefix too, MSVC2010SP1.
I can't build QWebkit, I don't know where is the ICU library place?
Any docs about ICU library installed in Windows?

kkoehne

@Yuchen: I don't know about ICU on Windows, but I do know that you can just build Qt without webkit by deleting / renaming qtwebkit, qtwebkit-examples-and-demos directories, and then re-running configure. Maybe you don't need it after all?

Loaden

@kkoehne : Thanks for reply!
I need to build QWebKit, Because I want build QtCreator use Qt5.
But after try and try, and the final, I don't have any idea how to add ICU library for QWebKit.
And I find a way to build Qt5 when use another prefix.

Step1:
set PATH=

Loaden

Step1:
set PATH=

Loaden

@kkoehne : Thanks for reply!
I need to build QWebKit, Because I want build QtCreator use Qt5.
But after try and try, and the final, I don't have any idea how to add ICU library for QWebKit.
And I find a way to build Qt5 when use another prefix.

Step1:
set PATH...
set QTDIR...
Same the wiki.

Step2:
configure -confirm-license -opensource -prefix D:\qpSOFT\DEVx86\qt5 -release -platform win32-msvc2010 -fast -no-stl -nomake examples -nomake tests
(QtSrcDir = D:\qpSOFT\Sources\Qt5)

Step3:
nmake module-qtbase && nmake module-qtbase-install_subtargets

Step4:
nmake && nmake install

The meaning is we should install qtbase to prefix first.
Then we can build other module.

Any tips or hits about How To Build QWebkit on Windows?
Thanks!!

pierrevr

@Yuchen: Thanks for the tip on installing qtbase first. It works, but I don't understand why this is necessary. I am cross-compiling for a target system that has a completely different hierarchy, I don't consider it normal to have to install on the build system in this case. I ended up using a symlink on my dev system to, pointing to somewhere acceptable, installed with INSTALL_ROOT=/<path>, but I think this is a bug.

As for the Windows question, I wouldn't know sorry, I develop on Linux.

hmuelner

Re: building QWebkit on Windows:
The reason for the build failure are the following lines in qtwebkit/Source/WTF/WTF.pri:
@ contains(QT_CONFIG,icu) {
LIBS += -licui18n -licuuc -licudata
} else {
error("To build QtWebKit with Qt 5 you need ICU")
}
@

I could not find a way to include icu in QT_CONFIG, but a brute force approach (for testing purposes) would be to remove the contains query and include the 3 icu libraries unconditionally.

pierrevr

hmuelner: That is a different problem, I believe. As stated in "Building_Qt_5_from_Git":http://developer.qt.nokia.com/wiki/Building_Qt_5_from_Git :

WebKit doesn’t compile, missing ICU

Currently there is no configure time check for ICU, so install it through the package manager through
on Ubuntu/Debian:

sudo apt-get install libicu-dev

on Fedora:

yum search ICU

Alternatively you can also compile Qt without webkit by deleting / renaming the qtwebkit, qtwebkit-examples-and-demos directories. The -no-webkit option of configure does not work yet : https://bugreports.qt-project.org/browse/QTBUG-20577