@sierdzio You are absolutely right, thank you. I didn't know about the nmake install command :)

Ok, how about this - Anybody know a way I can add code or set env to enable rotation, (portrait/landscape, or...). As it is, the qt apps don't respond to phone sensors, but are fixes...

Found what was causing the problem from here. I don't know why but running without -j4 like this: mingw32-make there is no error and qt is built successfully. I thought that without -j4 I would see the error message but luckily there was no error.

Found it! Thanks!

Thank you very much

@Burke212 change setup(); CWC = new customWidgetClass(); to CWC = new customWidgetClass(); setup(); hopefully you did initialize CWC as nullptr, otherwise that would have crashed in release mode 10/10 times.

been a couple days since I have looked into this, but went in and modified the /bits/syscall.h file by simply adding the syscall number for renameat2 was able to run the configure command and got this error at the end: ERROR: The OpenGL functionality tests failed! You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2], QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform. Check config.log for details. The full output from running (sorry I know it is long but I was unable to attach a file with everything like i wanted): Configure summary: Build type: linux-g++ (arm, CPU features: <none>) Configuration: use_gold_linker compile_examples enable_new_dtags largefile precompile_header shared rpath release c++11 c++14 concurrent dbus reduce_exports stl Build options: Mode ................................... release Optimize release build for size ........ no Building shared libraries .............. yes Using C++ standard ..................... C++14 Using ccache ........................... no Using gold linker ...................... yes Using new DTAGS ........................ yes Using precompiled headers .............. yes Using LTCG ............................. no Target compiler supports: NEON ................................. no Build parts ............................ libs examples tools Qt modules and options: Qt Concurrent .......................... yes Qt D-Bus ............................... yes Qt D-Bus directly linked to libdbus .... no Qt Gui ................................. yes Qt Network ............................. yes Qt Sql ................................. yes Qt Testlib ............................. yes Qt Widgets ............................. yes Qt Xml ................................. yes Support enabled for: Using pkg-config ....................... yes QML debugging .......................... yes udev ................................... no Using system zlib ...................... yes Qt Core: DoubleConversion ....................... yes Using system DoubleConversion ........ no GLib ................................... no iconv .................................. yes ICU .................................... no Logging backends: journald ............................. no syslog ............................... no slog2 ................................ no Using system PCRE2 ..................... no Qt Network: getifaddrs() ........................... yes IPv6 ifname ............................ yes libproxy ............................... no OpenSSL ................................ no Qt directly linked to OpenSSL ........ no SCTP ................................... no Use system proxies ..................... yes Qt Gui: Accessibility .......................... yes FreeType ............................... yes Using system FreeType ................ no HarfBuzz ............................... yes Using system HarfBuzz ................ no Fontconfig ............................. no Image formats: GIF .................................. yes ICO .................................. yes JPEG ................................. yes Using system libjpeg ............... no PNG .................................. yes Using system libpng ................ no EGL .................................... no OpenVG ................................. no OpenGL: Desktop OpenGL ....................... no OpenGL ES 2.0 ........................ no OpenGL ES 3.0 ........................ no OpenGL ES 3.1 ........................ no OpenGL ES 3.2 ........................ no Vulkan ................................. no Session Management ..................... yes Features used by QPA backends: evdev .................................. yes libinput ............................... no INTEGRITY HID .......................... no mtdev .................................. no tslib .................................. no xkbcommon-evdev ........................ no QPA backends: DirectFB ............................... no EGLFS .................................. no LinuxFB ................................ yes VNC .................................... yes Mir client ............................. no X11: Using system-provided XCB libraries .. no EGL on X11 ........................... no Xinput2 .............................. no XCB XKB .............................. yes XLib ................................. no XCB render ........................... yes XCB GLX .............................. no XCB Xlib ............................. no Using system-provided xkbcommon ...... no Native painting (experimental) ....... no Qt Widgets: GTK+ ................................... no Styles ................................. Fusion Windows Qt PrintSupport: CUPS ................................... no Qt Sql: DB2 (IBM) .............................. no InterBase .............................. no MySql .................................. no OCI (Oracle) ........................... no ODBC ................................... no PostgreSQL ............................. no SQLite2 ................................ no SQLite ................................. yes Using system provided SQLite ......... no TDS (Sybase) ........................... no Qt SerialBus: Socket CAN ............................. yes Socket CAN FD .......................... yes QtXmlPatterns: XML schema support ..................... yes Qt QML: QML interpreter ........................ yes QML network support .................... yes Qt Quick: Direct3D 12 ............................ no AnimatedImage item ..................... yes Canvas item ............................ yes Support for Qt Quick Designer .......... yes Flipable item .......................... yes GridView item .......................... yes ListView item .......................... yes Path support ........................... yes PathView item .......................... yes Positioner items ....................... yes ShaderEffect item ...................... yes Sprite item ............................ yes Qt Gamepad: SDL2 ................................... no Qt 3D: Assimp ................................. yes System Assimp .......................... no Output Qt3D Job traces ................. no Output Qt3D GL traces .................. no Use SSE2 instructions .................. no Use AVX2 instructions .................. no Aspects: Render aspect ........................ yes Input aspect ......................... yes Logic aspect ......................... yes Animation aspect ..................... yes Extras aspect ........................ yes Qt 3D GeometryLoaders: Autodesk FBX ........................... no Qt Wayland Client ........................ no Qt Wayland Compositor .................... no Qt Bluetooth: BlueZ .................................. no BlueZ Low Energy ....................... no Linux Crypto API ....................... no WinRT Bluetooth API (desktop & UWP) .... no Qt Sensors: sensorfw ............................... no Qt Quick Controls 2: Styles ................................. Default Fusion Imagine Material Universal Qt Quick Templates 2: Hover support .......................... yes Multi-touch support .................... yes Qt Positioning: Gypsy GPS Daemon ....................... no WinRT Geolocation API .................. no Qt Location: Geoservice plugins: OpenStreetMap ........................ yes HERE ................................. yes Esri ................................. yes Mapbox ............................... yes MapboxGL ............................. no Itemsoverlay ......................... yes Qt Multimedia: ALSA ................................... no GStreamer 1.0 .......................... no GStreamer 0.10 ......................... no Video for Linux ........................ yes OpenAL ................................. no PulseAudio ............................. no Resource Policy (libresourceqt5) ....... no Windows Audio Services ................. no DirectShow ............................. no Windows Media Foundation ............... no Qt WebEngine: Embedded build ......................... no Pepper Plugins ......................... yes Printing and PDF ....................... yes Proprietary Codecs ..................... no Spellchecker ........................... yes Native Spellchecker .................... no WebRTC ................................. yes Use System Ninja ....................... no Geolocation ............................ yes Use v8 snapshot ........................ yes Use ALSA ............................... no Use PulseAudio ......................... no Optional system libraries used: re2 .................................. no icu .................................. no libwebp, libwebpmux and libwebpdemux . no opus ................................. no ffmpeg ............................... no libvpx ............................... no snappy ............................... no libsrtp .............................. no glib ................................. no zlib ................................. yes minizip .............................. no libevent ............................. no jsoncpp .............................. no protobuf ............................. no libxml2 and libxslt .................. no lcms2 ................................ no png .................................. no harfbuzz ............................. no Required system libraries: fontconfig ........................... no dbus ................................. no nss .................................. no khr .................................. no glibc ................................ yes Required system libraries for qpa-xcb: libdrm ............................... yes xcomposite ........................... no xcursor .............................. no xi ................................... no xrandr ............................... no xtst ................................. no Note: Also available for Linux: linux-clang linux-icc Note: Disabling X11 Accessibility Bridge: D-Bus or AT-SPI is missing. Note: No wayland-egl support detected. Cross-toolkit compatibility disabled. Note: Dropped compiler flags '-pthread' when detecting library 'webengine-protobuf'. WARNING: gperf is required to build QtWebEngine. WARNING: bison is required to build QtWebEngine. WARNING: flex is required to build QtWebEngine. ERROR: The OpenGL functionality tests failed! You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2], QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform. Check config.log for details.

AFAIK, QtWebKit static build has been disabled a long time ago.

So it doesn't work even with developer-build :/, so recompile myself didn't help, still any solution.

@Eeli-K That would mean you can't use github at all then since it isn't under your control. If github is considered "under your control" you can just fork Qt to your github account though. I mean along these lines though no web server you don't actually own is truly under your control. And even then you are at the mercy of your internet provider even if it is physically your system. My company has quite a few web servers, but since things like AWS came around I don't buy actual hardware any more. AWS is not technically under my control even though I have root access to all the systems that are "mine". You're right though. I don't think it would really be an issue, but people have sued over smaller things. The safe way is definitely throw up a copy on your own web server. Knowing it will never be downloaded by anyone just seems to make it such a waste of resources though.

@raven-worx Yes, this is exactly what I was looking for. I didn't realize there was an example on it, silly mistake on my part. Thank you very much!

Hi, code.qt.io is the central repository of all Qt's code. Start from the qtbase module to have the basic pieces. If you would like to learn the internal, helping fixing bugs will also give you a better understanding of how things are working.

Hi @amahta , I was browsing the applications you have written, and they look really good. Would you be interested in having them presented in the Qt Showroom? http://showroom.qt.io They would be a good fit there, as they show off using Qt together with OpenCV in a practical way. Ping me on chat if you are interested. Tero // Online Community Manager

Hi May I ask how you got this to build? I am trying to compile Qt with the following configuration (for Raspberry Pi): ./configure --prefix=/usr -release -opensource -confirm-license -c++11 -no-largefile -no-qml-debug -system-zlib \ -no-journald -system-libpng -system-freetype -system-libjpeg -system-sqlite -openssl -no-pulseaudio -alsa \ -no-sql-db2 -no-sql-ibase -no-sql-mysql -no-sql-oci -no-sql-odbc -no-sql-psql -no-sql-sqlite2 -no-sql-tds -nomake examples -reduce-exports \ -no-directfb -no-linuxfb -eglfs -no-xcb -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=/usr/bin/ -sysroot / Here is my patch: diff --git a/qtwebengine/tools/qmake/mkspecs/features/functions.prf b/qtwebengine/tools/qmake/mkspecs/features/functions.prf index ef0320d..5abaecc 100644 --- a/qtwebengine/tools/qmake/mkspecs/features/functions.prf +++ b/qtwebengine/tools/qmake/mkspecs/features/functions.prf @@ -12,13 +12,9 @@ defineTest(isPlatformSupported) { return(false) } - linux-g++*:!isGCCVersionSupported(): return(false) - !isPythonVersionSupported(): return(false) - linux-g++*|win32-msvc2013|macx-clang: return(true) boot2qt: return(true) - skipBuild("Qt WebEngine can currently only be built for Linux (GCC), Windows (MSVC 2013), OS X (XCode 5.1+) or Qt for Device Creation.") - return(false) + return(true) } defineTest(isPythonVersionSupported) { -- 2.1.0 And it succeeds, but I don't get a message about WebEngine being an unsupported platform. It simply does not build that module. I tried to follow this reference here, but had no luck either: https://forum.qt.io/topic/48223/webengine-raspberry-pi/2 I am building native, not cross, on Debian Jessie. Thanks in advance, Sam

I googled for Qt source repository. Somewhere in a (wiki?) on the official Qt website there is a link to all their repositories: http://code.qt.io/cgit/qt/ From there it is either just knowing that the QWidget stuff is in the qtbase project or a simple Ctrl+F for "widget" will also do. Click on that repository and go to the Tree tab. Then src -> widgets and from there it was just a couple of more Ctrl+F to figure out that qwidget.cpp is part of the kernel directory. I never browser the Qt sources myself before. It really just was 30 seconds of Ctrl+F magic :)

I have faced the same issue, however I resolved it by following the instructions from the below link: http://pifuge.com/ubuntu/cPB-error-gnutls-handshake-failed-when-connecting-to-https-servers

Hi, To add to @koahnig, it's not a Qt specific problem. Compilers on Windows are not compatible one with the other, so basically you have to ensure that all components of your software are built using the same compiler.