I am writing an Qt application and trying to automate Qt dll's deployment automattic via QWindeploy and the code looks as following:
########## QT DEPLOYMENT ##########
get_target_property(_qmake_executable Qt5::qmake IMPORTED_LOCATION)
get_filename_component(_qt_bin_dir "${_qmake_executable}" DIRECTORY)
find_program(WINDEPLOYQT_EXECUTABLE windeployqt HINTS "${_qt_bin_dir}")
install(CODE "execute_process(COMMAND ${WINDEPLOYQT_EXECUTABLE} --no-compiler-runtime ${CMAKE_INSTALL_PREFIX}/bin/${PROJECT_NAME}.exe)")
##########
With the above code qwindowsd.dll is not copied during debug mode, but release mode works quite well. I have even tried running windeploy via CMD but gives the following error:
enter image description here
Somehow it is looking for wrong dll (QtCoredd.dll).
Can anyone help me with this problem?
Thank you
Related
So I just migrated a working application from Qt 6.1.2 to Qt 6.4.2. Pressed play in QtCreator and everthing ran, particularly the connection to a remote server which is done via HTTPS. I use QSslSocket::supportsSsl() to check that everything is ok with SSL and if it's not I close the application. So the fact the application opens means that everything is where it is.
I do however get this in the QtCreator console:
qt.tlsbackend.ossl: Failed to load libssl/libcrypto.
However it does work fine. I have tested.
Once I have this working I run windeployqt by doing
PATH/TO/windeployqt --qmldir PATH/TO/qmldir PATH/TO/myapp.exe
It runs and no errors. But now the application won't run neither from QtCreator (pressing play) nor from double clicking the executable. QtCreator console now throws THIS error:
qt.network.ssl: No functional TLS backend
I made sure that the libcrypto and libssl libraries (the same one in the OpenSSL directory installed by Qt Maintainer and in the bin directory of QtCreator) are in the executable's directory.
But I have no Idea why it is not working anymore. This exact same process worked on Qt 6.1.2 with no issues.
Any ideas?
EDIT: UPDATE: So I've been fooling around. And I found the following interesting tidbit. If I delete the QtCore6.dll from the executable directory where I ran the windeployqt, then I can launch the application from QtCreator again. I don't know if this helps anyone help me, but I'm putting it here just in case.
I downloaded Qt5.6 VS2013 32bit and try to run the official example of QtWebEngine.
I just followed the instruction but
When linking it gives out an error of
LNK1104 file not found c:\Users\qt\work\install\lib\Qt5Widgetsd.lib.
However, I have no idea of where this path c:\Users\qt\work\install\lib\ comes from.
I did text search in all directories of example folder and no hits other than generated files(makefiles and pdbs).
I also checked system environment variables but no hits.
Furthermore, I checked Qt Creator'r Projects panel and its Build Environment and still no hits.
Did I miss something?
P.S. this error was given out by linking DemoBrowser example of QtWebEngineWidgets pro
The link is generated by qmake when it generates the build scrip from the qt project file (*.pro). It is based from the qmake application path that is generaly installed together with the libraries (check you qt kit setup to change it if needed: Jst browse to qmake.exe application).
Then try regenerate the build script. It should fix the issue.
You may also have issue with installation not being in debug mode; you are trying to use Qt5Widgetsd.lib library instead of the non-debug one Qt5Widgets.lib
I am trying to build an QT application with version 5.4.
and when ever I am trying to run the exe on a different machine where QT is not installed I am getting below error "The program cannot start because QT5core.dll is missing from your computer, Try reinstalling the program to fix this problem".
and when I copied QT5core.dll with the exe in a machine where QT is not installed its working fine.
Is there any way that I can link QT5core.dll with the exe statically so that whatever place I run this exe it should not ask for any dll.
Thanks,
Tushar
You can build a standalone version of your Qt application so that it doesn't have any library dependencies at runtime. Be warned though: this can greatly expand the size of the .exe generated and the compilation time. Have a look here:
https://wiki.qt.io/Build_Standalone_Qt_Application_for_Windows
and here:
https://wiki.qt.io/How_to_build_a_static_Qt_version_for_Windows_with_gcc
I wrote a little Qt utility in VS2013. It works fine when running from IDE - even debugging is great. But VS doesn't generate usable exe (error 0xc000007b - "The application was unable start to work correctly", after I've installed all required qt's dll's).
Is there any way to compile everything and correctly from VS? To make really runnable exe?
Or - How can I write correct pro file for qmake?
I tried to write some. qmake generated from it makefile without any erros, but running VS's nmake it gives a "fatal error: U1077 return code '0x2'".
As I think it is problem with linker - even I wrote for all used modules all required QT += lines.
Can anybody help? I think I'm not alone who met this problem.
Thanks.
When you get an error like you got it means you have some dlls missing. You can only find out what dlls are missing using DependencyWalker.
*.pro files can be generated from Visual Studion using the Visual Studio Add-in for Qt4 or with Visual Studio Add-in for Qt5 depending on your Qt version.
If you have a Qt/VS application you want to deploy, AFAIK the following dlls are needed:
Qt5Core.dll
Qt5Gui.dll
Qt5Widgets.dll
platforms (folder)
qminimal.dll
qoffscreen.dll
qwindows.dll
icuin52.dll
icudt52.dll
icuuc52.dll
YourApplication.exe
For more information see http://qt-project.org/doc/qt-4.8/deployment-windows.html
I have just purchased a Macbook (yes I am a complete noob on Mac though I have some considerable experience with Linux) and I'm trying to build my Qt application on it. I have installed XCode and the Qt SDK but when I try to build my project on Qt Creator all I get is the following error during qmake:
Running build steps for project TimeTracker...
Starting: "/usr/bin/qmake" /Users/raphaelcruzeiro/Documents/Projects/Timely/Widget/TimeTracker/TimeTracker.pro -r -spec macx-g++
Failure to open file: /Developer/Applications/Qt/Makefile
Unable to generate makefile for: /Users/raphaelcruzeiro/Documents/Projects/Timely/Widget/TimeTracker/TimeTracker.pro
The process "/usr/bin/qmake" exited with code %2.
Error while building project TimeTracker (target: Desktop)
When executing build step 'qmake'
Any ideas on what is going on? /Developer/Applications/Qt/Makefile indeed does not exist.
EDIT:
Ok, I know what is going on but I don't know how to fix it. When I ran qmake from the terminal everything went just fine. I believe that Qt Creator is trying to build my application on the Qt directory itself and it does nt have permission for it (it shouldn't anyway).
How do I tell Qt Creator where to build my application? I didn't find it anywhere and setting the DESTDIR variable isn't helping.
THE SOLUTION:
Deleting the .pro.user file made Qt Creator build the application to the directory specified in DESTDIR
THE SOLUTION:
Deleting the .pro.user file made Qt Creator build the application to the directory specified in DESTDIR
I was battling with the same thing. What helped eventually was resetting the default build directory here: