Installation and Deployment

Its ugly workaround, but can helps. Open your <EGL/eglplatform.h> in text editor and after strings: #include <X11/Xlib.h> #include <X11/Xutil.h> add following strings: #undef None #undef CursorShape

Hi and welcome to devnet, You can use QtSdkRepoChooser to try another mirror. Hope it helps

Search in the Qt forums, there are discussions about not found platform plugins. Your application is not able to find needed platform plugin. You should read http://doc.qt.io/qt-5/deployment.html as well.

@mrdebug has the same problem as you (@onlydp ) https://forum.qt.io/topic/57801/unresolved-correct-way-to-compile-qt-for-raspberry-pi

You're welcome ! Since you have it working now, please update the thread title prepending [solved] so other forum users may know a solution has been found :) Also, while browsing the forum, consider up-voting answers that helped you, it will make them easier to find for other users :)

Hi again, one night later (I gave the make some time to work) I saw that now the make puts out some errors. I don't think that's linked to my probleme above, but still it has something to do with installing Qt on Raspberry Pi, so I don't think it would be useful to open a new topic. As I said I gave the make a night to run and the first half hour while I had an eye on it everything went fine. No errors, new outputs. Everything fine. But the moment I looked into it today there have been a couple of errors. I did a rerun of the make to see what is fine and what fails. This is the output: make cd qtbase/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/qtbase.pro -o Makefile ) && make -f Makefile make[1]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase' cd src/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/src.pro -o Makefile ) && make -f Makefile make[2]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src' cd tools/bootstrap/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/bootstrap/bootstrap.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/bootstrap' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/bootstrap' cd tools/moc/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/moc/moc.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/moc' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/moc' cd tools/rcc/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/rcc/rcc.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/rcc' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/rcc' cd 3rdparty/pcre/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/pcre/pcre.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/pcre' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/pcre' cd corelib/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/corelib/corelib.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/corelib' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/corelib' cd tools/qlalr/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/qlalr/qlalr.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/qlalr' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/qlalr' cd network/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/network/network.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/network' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/network' cd sql/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/sql/sql.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/sql' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/sql' cd xml/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/xml/xml.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/xml' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/xml' cd 3rdparty/harfbuzz-ng/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/harfbuzz-ng/harfbuzz-ng.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/harfbuzz-ng' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/harfbuzz-ng' cd gui/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/gui/gui.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/gui' g++ -c -include .pch/Qt5Gui -pipe -O3 -fvisibility=hidden -fvisibility-inlines-hidden -std=c++0x -fno-exceptions -Wall -W -D_REENTRANT -fPIC -DQT_NO_MTDEV -DQT_NO_LIBUDEV -DQT_NO_TSLIB -DQT_NO_LIBINPUT -DQT_NO_XKB -DQT_NO_USING_NAMESPACE -DQT_BUILD_GUI_LIB -DQT_BUILDING_QT -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_ENABLE_HARFBUZZ_NG -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_CORE_LIB -I. -I../../include -I../../include/QtGui -I../../include/QtGui/5.5.0 -I../../include/QtGui/5.5.0/QtGui -Iimage -I../3rdparty/harfbuzz-ng/include -I../../include/QtCore/5.5.0 -I../../include/QtCore/5.5.0/QtCore -I../../include/QtCore -I.moc -I../../mkspecs/linux-g++ -o .obj/qpdf.o painting/qpdf.cpp painting/qpdf.cpp: In member function ‘int QPdfEnginePrivate::createShadingFunction(const QGradient*, int, int, bool, bool)’: painting/qpdf.cpp:1982:70: error: no matching function for call to ‘qBound(double, const float&, double)’ painting/qpdf.cpp:1982:70: note: candidate is: ../../include/QtCore/../../src/corelib/global/qglobal.h:543:34: note: template<class T> constexpr const T& qBound(const T&, const T&, const T&) painting/qpdf.cpp:1983:73: error: no matching function for call to ‘qBound(double, const float&, double)’ painting/qpdf.cpp:1983:73: note: candidate is: ../../include/QtCore/../../src/corelib/global/qglobal.h:543:34: note: template<class T> constexpr const T& qBound(const T&, const T&, const T&) painting/qpdf.cpp:1991:66: error: no matching function for call to ‘qBound(double, const float&, double)’ painting/qpdf.cpp:1991:66: note: candidate is: ../../include/QtCore/../../src/corelib/global/qglobal.h:543:34: note: template<class T> constexpr const T& qBound(const T&, const T&, const T&) painting/qpdf.cpp:1992:69: error: no matching function for call to ‘qBound(double, const float&, double)’ painting/qpdf.cpp:1992:69: note: candidate is: ../../include/QtCore/../../src/corelib/global/qglobal.h:543:34: note: template<class T> constexpr const T& qBound(const T&, const T&, const T&) painting/qpdf.cpp: In member function ‘int QPdfEnginePrivate::generateRadialGradientShader(const QRadialGradient*, const QTransform&, bool)’: painting/qpdf.cpp:2157:44: error: ambiguous overload for ‘operator<<’ in ‘(&(&(&(& s.QPdf::ByteStream::operator<<(((const char*)"<<\012/ShadingType 3\012/ColorSpace ")))->QPdf::ByteStream::operator<<((alpha ? ((const char*)"/DeviceGray\012") : ((const char*)"/DeviceRGB\012"))))->QPdf::ByteStream::operator<<(((const char*)"/AntiAlias true\012/Domain [0 1]\012/Coords [")))->QPdf::ByteStream::operator<<(p0.QPointF::x()))->QPdf::ByteStream::operator<<(p0.QPointF::y()) << r0’ painting/qpdf.cpp:2157:44: note: candidates are: painting/qpdf.cpp:180:17: note: QPdf::ByteStream& QPdf::ByteStream::operator<<(char) painting/qpdf.cpp:218:17: note: QPdf::ByteStream& QPdf::ByteStream::operator<<(qreal) painting/qpdf.cpp:225:17: note: QPdf::ByteStream& QPdf::ByteStream::operator<<(int) Makefile:47997: recipe for target '.obj/qpdf.o' failed make[3]: *** [.obj/qpdf.o] Error 1 make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/gui' Makefile:446: recipe for target 'sub-gui-make_first' failed make[2]: *** [sub-gui-make_first] Error 2 make[2]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src' Makefile:45: recipe for target 'sub-src-make_first' failed make[1]: *** [sub-src-make_first] Error 2 make[1]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase' Makefile:72: recipe for target 'module-qtbase-make_first' failed make: *** [module-qtbase-make_first] Error 2 Setup is the same as above. Raspberry Pi 2 with Raspbian on it. Any ideas how to solve this? I thought about deactivating the PDFEngine in Qt because I don't need it at the moment. Due to that I took a look into "./configure -h" whether that is possible and I found options for a lot other plugins or parts of Qt, but no PDF engine EDIT: I tried to replace my qpdf.cpp with the qpdf of this page (https://codereview.qt-project.org/#/c/122004/) because I've had to use configure with '-qreal float' and that's there me google led to. But the error seems to be the same. (RE-EDIT: it isn't the same. There is still an error but it looks different. Output following) make cd qtbase/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/qtbase.pro -o Makefile ) && make -f Makefile make[1]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase' cd src/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/src.pro -o Makefile ) && make -f Makefile make[2]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src' cd tools/bootstrap/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/bootstrap/bootstrap.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/bootstrap' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/bootstrap' cd tools/moc/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/moc/moc.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/moc' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/moc' cd tools/rcc/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/rcc/rcc.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/rcc' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/rcc' cd 3rdparty/pcre/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/pcre/pcre.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/pcre' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/pcre' cd corelib/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/corelib/corelib.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/corelib' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/corelib' cd tools/qlalr/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/qlalr/qlalr.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/qlalr' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/tools/qlalr' cd network/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/network/network.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/network' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/network' cd sql/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/sql/sql.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/sql' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/sql' cd xml/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/xml/xml.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/xml' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/xml' cd 3rdparty/harfbuzz-ng/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/harfbuzz-ng/harfbuzz-ng.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/harfbuzz-ng' make[3]: Nothing to be done for 'first'. make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/3rdparty/harfbuzz-ng' cd gui/ && ( test -e Makefile || /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/bin/qmake /home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/gui/gui.pro -o Makefile ) && make -f Makefile make[3]: Entering directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/gui' g++ -c -include .pch/Qt5Gui -pipe -O3 -fvisibility=hidden -fvisibility-inlines-hidden -std=c++0x -fno-exceptions -Wall -W -D_REENTRANT -fPIC -DQT_NO_MTDEV -DQT_NO_LIBUDEV -DQT_NO_TSLIB -DQT_NO_LIBINPUT -DQT_NO_XKB -DQT_NO_USING_NAMESPACE -DQT_BUILD_GUI_LIB -DQT_BUILDING_QT -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_ENABLE_HARFBUZZ_NG -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_CORE_LIB -I. -I../../include -I../../include/QtGui -I../../include/QtGui/5.5.0 -I../../include/QtGui/5.5.0/QtGui -Iimage -I../3rdparty/harfbuzz-ng/include -I../../include/QtCore/5.5.0 -I../../include/QtCore/5.5.0/QtCore -I../../include/QtCore -I.moc -I../../mkspecs/linux-g++ -o .obj/qpdf.o painting/qpdf.cpp painting/qpdf.cpp: In member function ‘int QPdfEnginePrivate::generateRadialGradientShader(const QRadialGradient*, const QTransform&, bool)’: painting/qpdf.cpp:2157:44: error: ambiguous overload for ‘operator<<’ in ‘(&(&(&(& s.QPdf::ByteStream::operator<<(((const char*)"<<\012/ShadingType 3\012/ColorSpace ")))->QPdf::ByteStream::operator<<((alpha ? ((const char*)"/DeviceGray\012") : ((const char*)"/DeviceRGB\012"))))->QPdf::ByteStream::operator<<(((const char*)"/AntiAlias true\012/Domain [0 1]\012/Coords [")))->QPdf::ByteStream::operator<<(p0.QPointF::x()))->QPdf::ByteStream::operator<<(p0.QPointF::y()) << r0’ painting/qpdf.cpp:2157:44: note: candidates are: painting/qpdf.cpp:180:17: note: QPdf::ByteStream& QPdf::ByteStream::operator<<(char) painting/qpdf.cpp:218:17: note: QPdf::ByteStream& QPdf::ByteStream::operator<<(qreal) painting/qpdf.cpp:225:17: note: QPdf::ByteStream& QPdf::ByteStream::operator<<(int) Makefile:47997: recipe for target '.obj/qpdf.o' failed make[3]: *** [.obj/qpdf.o] Error 1 make[3]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src/gui' Makefile:446: recipe for target 'sub-gui-make_first' failed make[2]: *** [sub-gui-make_first] Error 2 make[2]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase/src' Makefile:45: recipe for target 'sub-src-make_first' failed make[1]: *** [sub-src-make_first] Error 2 make[1]: Leaving directory '/home/pi/Downloads/qt-everywhere-opensource-src-5.5.0/qtbase' Makefile:72: recipe for target 'module-qtbase-make_first' failed make: *** [module-qtbase-make_first] Error 2 EDIT No.3: I solved this right now by uncomment row 2157 of the asked document. But that's only a solution for me because qpdf isn't necessary in my case. Maybe the devs should look into this problem sometime. (Btw. I used the updated file not the standart one)

Had same issue on lubuntu and Qt 5.2.1. I removed Qt configuration files from .config folder in my home dir. rm -r ~.config/QtProject rm ~.config/QtProject.conf Reconfigure project again and all works as expected

@Kavlakoglu Did you install Qt from here: http://www.qt.io/download-open-source/? Can you also show the compilation output? did everything compile/link ok with no warnings/errors? Have you checked that c:.....\debug\programname.exe exists?

@jitu059_Lalat The long and short if it are, you have two ways to do this: Find all the dll's that your app depends on. You can do this with the tool http://www.dependencywalker.com/. Once you found all the dll's copy them into the same folder as your executable. This is now your "delivery package" you will copy the executable + dlls from PC to PC. This method is perhaps a bit easier/faster in the short term, but when you compile with different versions of Qt/Windows you may require a different set of dlls (i.e. Qt4 Dlls don't match Qt5 Dlls). Download the Qt source code and compile it for static linking. Then when you build your code you will get a much larger executable file, but it will contain everything it needs - a standalone executable. This is perhaps a bit more work on your part, but master this and it makes deploying your project from PC to PC much easier. Have a go at one or other method, if you get stuck then ask again. But as SGaist said, there is lots of documentation out there already : )

@Derrick-Johnson When I had issues with my company firewall/ssl certificates I downloaded the offline installer and it worked fine. From the page: http://www.qt.io/download-open-source/, click the "view all downloads" scroll down until you see the offline installers and pick the one that you need. When you run the installer it looks the same (i.e. type in your username / password, but it does not need to do the ssl handshaking).

Look a the lib folder you'll see directly. IIRC when the docs are not shown properly, it generally means the Assistant was not built using webkit

@scrolling said: But, what does "dynamic linking" means? It applies only to Qt linking. This means that you can use LGPL version for closed source software only if you link dynamically QT libraries

I know the problem. Apple's philosophy is always develop with the latest version of OS X and Xcode which is not always ideal. Just keep in mind that with El Capitan coming up, jumping to only Lion or Mountain Lion might not be enough on the long run.

@Chris-Kawa Thanks! I had searched before and found the welcome.dll causes the error (as you said). I removed this dll from C:\Qt\Qt5.5.0\Tools\QtCreator\lib\qtcreator\plugins and now qtcreator.exe has been launched successfully.

Too old for 5.4 you should get 5.3 if you want to develop on that version of OS X

Good one, but doesn't require absolute latest version of Qt. Since you're developing some stuff for your KDE desktop, I'd say it simpler to stick with the same version you have for it, so you ensure that you are using the same set of plugins etc.

Hi, Run the maintenance tool, from there you can add/remove Qt version as you see fit

A partial answer turns out to be to set the opengl linkage explicitly; remove the test, and set the search location for opengl thus: LIBS += -L'C:/Program Files (x86)/Windows Kits/10/Lib/10.0.10240.0/um/x64' -lOpenGL32 The -L reference points to a folder containing 64-bit OpenGL library - in my case this came with the latest Windows SDK. The doc refers to an "environment variable QT_OPENGL" but is very unclear how that should be set. Perhaps it should be set to point to that folder - does anyone know? And is it a Windows environment variable? Also, enigmatically, the "New Features" notes for 5.5. tell us: "On Windows the OpenGL implementation to use can now be configured based on the GPU vendor and driver version using JSON configuration files. This allows shipping fine-grained card and driver blacklists with the apps, when necessary." ...but there seems to be precisely zero explanation of what that actually means or how to define or locate these mysterious JSON files. it suggests it would be possible to point to an OpenGL library on the hoof - obviously important for multiple installations - but in the absence of an example the poor vexed user is left high and dry. Again, can ANYONE explain what this is all about? Thanks Mike