I want to compile QT 5.0 similar to the package that is offer on http://qt-project.org/downloads for Visual Studio 2012.
I followed these instructions http://qt-project.org/wiki/Building-Qt-5-from-Git and they work pretty well, only problem is, if I rename the folder where I compiled QT (or move the folder someplace else), Visual Studio starts complaining when I try to build a QT Application, that it does not find debug information or platform is missing, is like somehow the compilation files embedded the full path inside them to look for dependencies instead of been relative paths.
The reasons I do not use the package provided for VS in the website is because I also need an x86 version of it.
Another problem I am facing is that the compilation folder has thousands of files that takes a long time to move or delete, in the package from the website there are not so many files.
Does anyone know what options I have to give QT when compiling it the first time?
I use “-debug_and_release -c++11 -opensource -nomake examples -nomake tests”
Thanks!
On VS there should be Qt5 menu. There must be something like Qt Options. From the Versions tab you must add the new path as a new version and probably remove the old path because it does not exist anymore. Probably you will also need to change the project's Qt version from the project's context menu. I don't have VS in front of me but according to my visual memory this should do the trick.
Related
I've been googling for a solution to this issue and although I've found many people sharing my problem none of their solutions work for me.
I wrote a C++ application using Qt framework using Visual Studio 2010. I built and ran the application in "Release" mode from Visual Studio without issue, but when I copy that exe from the Release folder to a new destination (pretend its a new PC) it fails to run providing this error:
---------------------------
TestApplication
---------------------------
This application failed to start because it could not find or load the Qt platform plugin "windows".
Available platform plugins are: windows.
Reinstalling the application may fix this problem.
Within the executable directory I have the following file structure:
./TestApplication.exe
./libGLESv2.dll
./Qt5Core.dll
./Qt5Gui.dll
./QtWidgets.dll
./platforms/qwindows.dll
./qt.conf
All dll files were taken from the 5.0.0 build of Qt in the Qtbase folder where the libraries reside.
The qt.conf file is:
[Paths]
Plugins=.
Without it, the launch error is the same except it says "minimal" and "offscreen" are available platforms as well.
For all other people experiencing this error it seemed to be solved by creating the platforms folder and putting in the qwindows.dll. But doing that myself doesn't change any behavior.
Is there something I've done wrong? Perhaps my method of generating the .exe in the first place is wrong?
If you are using libGLESv2.dll, then you must include libEGL.dll, too.
You can't see that in depends.exe, don't know how the Qt developers managed to hide this.
If your Qt is out of the box, then both Dlls are necessary even if you are not using OpenGL.
Also, if your Qt is out of the box, you need to include also the three ic*.dll, which contain information for Unicode handling.
You can see which DLLs are needed by looking at which ones are invoked when running Debug (F5) in Qt Creator.
=Carl
The release is likely missing a library/plugin or the library is in the wrong directory and or from the wrong directory.
Qt intended answer: Use windeployqt.
Qt comes with platform console applications that will add all dependencies (including ones like qwindows.dll and libEGL.dll) into the folder of your deployed executable. This is the intended way to deploy your application, so you do not miss any libraries (which is the main issue with all of these answers). The application for windows is called windeployqt. There is likely a deployment console app for each OS.
I've attempted to follow the instructions on deploying Qt to Windows, but I am stuck on step number 1. In it, it tells you to:
cd C:\path\to\Qt
configure -static any other options you need
Unfortunately, I can't get the Qt DOS prompt to recognize the "configure" command despite attempting to use it in virtually every folder under my Qt installation. Does anyone know where this command is store? Everything else about my project is working great with Visual Studio, but I just can't seem to figure out the deployment.
I've Googled the crap out of this and tried both the Qt and the regular Windows command prompts. Any help would be greatly appreciated!
Thanks
EDIT: For clarity, I have tried dragging all of the .dlls needed to run my program (by running it and finding the ones I get errors on), but all that happens is I stop getting errors when trying to run my app. If I double click it with the .dlls in the same folder, nothing happens at all.
Are you sure you need the static Qt build? Note that you must static build the actual Qt framework for that, and only after that you can build your application.
If yes, make sure you have the Qt source code, because configure is part of the source code of Qt, it's a tool that configure the Qt build.
The step refers to path of Qt Source directory e.g. C:\QtSDK\QtSources\\
As you can see in qt5 source tree there is a file configure.bat
You need to run that with static option, so it will configure Qt for static linking.
Then you need to re-build Qt to make your new configuration to take effect.
I have been working on a Qt OpenGL project for a bit now for some school work. I had to re-build Qt 5.0.1 for my windows machine so I could use OpenGL proper. At the end of this project I need to turn over the files and any executables, so I figured I could take the release .exe and stick it in a .zip for use.
I followed instructions online of making sure I place any needed .dll's into the .exe's dir. For my project there are 10:
icudt49, icuin49, icuuc49, libEGL, libGLESv2, Qt5Core, Qt5Gui, Qt5OpenGL and Qt5Widgets
I took these files all from:
C:\Qt\Qt5.0.1\5.0.1\msvc2010\bin
on my system.
Issue is the .exe will run and I get the UI and all. But the OpenGL scene is just black. I can still click objects in the scene, evidently zoom in and out and all that. I assume thats just the Qt translating the commands still. But nothing is visible. I'm unsure what the problem can be because it all works fine when launched from the creator.
EDIT: So, with all the dlls in the release folder, running the project from within creator will also have a black screen, when I remove them, it runs well. So perhaps one of the dll's is just wrong?
Also:
I looked online about publishing with Qt Creator and found not too much aid, said I should start from completely rebuilding Qt Creator staticly, but I'm sure the guide I had followed did this, however I still can't publish from the build menu, so I stuck with the above method.
I suggest, that you open every of the DDLs in your Zip file with Dependency Walker (http://www.dependencywalker.com/). It should display information about dependencies from one of your QtXXX.dll files to other files. If one of the dependencies is missing, you know where to look next. You can also try to open your executable with Dependency Walker. I haven't used the program for a long time so I don't remember if opening an executable is the only way it works. Anyway, here are the reasons why you might want to use the tool: http://www.dependencywalker.com/help/html/overview_1.htm
This question might also be helpful:
At least one module has an unresolved import due to a missing export function in an implicitly dependent module
Good luck!
So the ultimate issue was the use of the correct DLLs. Using something like DependenyWalker can help you to note which DLLs may be missing, however it did nothing in my case.
I had installed Qt once, and also rebuilt, uninstalled and re-installed it. However all the libraries it was calling from as no longer in C:\Qt\Qt5.0.1\5.0.1\msvc2010\bin as expected, it was calling from the github repository where I built it C:\Users\User\Documents\GitHub\qt5. Once this is sorted out, it still required a framework folder and then it works as expected.
1) Copy the correct DLL files to the release folder of the build.
2) Create a folder in the same dir as the .exe named "platforms". (Note: elsewhere has said create plugins>platforms, but this will not work with newer Qt versions)
3) From the same source you got the other DLLs, copy qwindows.dll to the platforms folder you created.
4) Run the executable and enjoy.
As long as the system you're running on is capable of your OpenGL structure, it should be fine.
I have multiple installations of Qt4 on my Windows XP SP2 machine and have installed Qt Creator 2.1 today. However, running the project (.pro) files spawns the oldest version of Qt Designer installed (the one installed in 2009 together with the rest of the framework).
Since
I would not like to remove any previous installations of Qt
and for some obscure reason even if I explicitly ask Windows Explorer to always use the version I need it does not
I would like to give up a bit and just sript the needed behaviour in a .bat file like:
e:\path\to\qtcreator.exe %1
This opens Qt Creator, but something seems to prevent it from treating the .pro file properly (in short, the project does not "open" as it should).
Qt documents have a page on the matter at Qt Creator: Using Command Line Options, but it seems to ignore the topic in question.
Since Qt (being as excellent framework as it is) is also known to have its quirks (like that of qmake), I wonder, may be there is an undocumented way to solve my problem?
(Another way to fix the thing would of course be to make the correct version of Qt Designer run, but frankly I'd prefer the "hard-wired" solution since the mechanisms provided by Qt itself are still a bit unreliable.)
The libraries and tools used for a particular project (and a configuration in it) is set in the Projects panel in Qt Creator:
http://doc.qt.io/qtcreator/creator-build-settings.html
Selecting the Qt version to use with a project should force it to run the Designer that's part of the version. If it doesn't, then you should report it as a bug.
I have downloaded QT SDK LGLP (Creator + libraries) 4.6 and I am having problems compiling projects. After install I have added C:\Qt\2010.02\qt;C:\Qt\2010.02\qt\bin to PATH and added QTDIR env varaible containing C:\Qt\2010.02\qt, the I run "configure -platform win32-g++" to compile it. Everything went good.
I the tried to use QT Creator to create and compile a project.
The problem is everytime I try to compile I get the following error message:
No valid Qt version set. Set one in Tools/Options
Error while building project GUITest
When executing build step 'QMake'
Canceled build.
When I go to Tools/Options the manual version is set to v4.6.2, Location c:\qt\2010.02\qt\bin\qmake.exe. The auto detected version is set to even though I have added the dirs in Path. Is there something I am doing wrong here? Has anyone encountered this problem in Vista.
I have been working on this for 2 days, change configurations, reinstalled etc...
The QtDir value is compiled into the
qmake-binary. You can only change this
by recompiling qmake and passing on a
different value to qt-configure (I'm
not sure which setting or variable is
passed on to qmake) When using
precompiled, downloaded binaries,
you'll have to keep the QtDir at
c:\Qt\4.6.2
EDIT:
What I said was incorrect. The locations of qmake, moc,... are located in the file:
<Qt>/4.x.x/.qmake.cache
Try uninstalling/reinstalling qt creator
But i highly suspect you didnt compile qt properly as this problem seems really odd. I had alot of problems compiling so i know myself from the past mistakes.
Make sure you carefully reread install instructions for your environment, also if you have visual studio you need to follow procedure to install it in compliance with it. Same if you use another c compiler
If nothing goes right, the easiest way to install qt imo is directy from their git hub, chec installin qt from git, on their git site there is wiki that explains how to do it
its really easy and after that all you need to do is add the qt to creator
Hey, it QT emulators have lot of problems in vista, i have tried several times,it didnt work for me.. it works well with windows XP. though ill tell you in brief what you need to do
1)install latest perl
2)install carbide c++ editor
3)install Qt SDK
4)install s60 or N97 emulators
make sure that except perl all the items which are mentioned above will be in same drive,and also
make sure that folder names which you give while installation should not have spaces at all..
i.e suppose if you are going to place any of the above items in a folder whose name is having spaces it will not work.
if you have any doubts feel free to ask.