I have a QT project in QT creator. I have been getting strange behavior from it. Unless I open QT Creator with administrative permissions, it won't build at all complaining that it can't start process qmake (qmake is in the right place). My shadow build specifies ..\bin folder as the build. My complete structure is:
project
|
+--- bin
+--- src
So they are at the same level. What could be the issue here?
The problem is that when I use administrator rights, the project builds in C:\Users\bin which isn't right right place.
The actual error given is:
Could not start process "c:\qtsdk\desktop\qt\4.8.1\mingw\bin\qmake.exe"
It sounds like a number of your paths or locations may be off. They could be in the Qt Projects Configure dialog or it could be in your .pro file.
Does a simple "Hello World" example build, without editing the defaults for the folder structures? Do the examples of the Qt SDK build?
Did you install Qt at the root of the C drive? Nesting it in your documents or somewhere else can put a space in the Qt Path variable, which I don't think is supported well by Qt Creator and QMake without a lot of work.
Hope that helps.
Related
Update:
Because this was partly to have a project to code-browse the whole of qt, here is a much better way to do this: Code Browser by Woboq for C & C++
This even lets you browse into the includes outside the project like the system includes or the standard library.
Old Post:
My question is about Qt project in git://code.qt.io/qt/qt5.git repository. I checked out version 5.12.
My assumption is that qtcreator knows the qmake file but nothing about the configure command. Hence
I used the configure command to prepare the build in a shadow build directory
In QTCreator I opened qt.pro located in the git workspace
QTCreator opens the build settings dialog and I import them from the shadow build directory
Finally I click build in QTCreator.
But the compile window stalls when asking me for input. Qmake asks me about the licence type I want to choose. I had answered that already in the configure phase and even if I would agree to answer the question again, there is no prompt function in qtcreator's compile output window. Where did I go wrong?
If I forget about QTCreator and call make in the shadow build directory, then everything is build fine and without any licensing questions. When I then import the shadow build directory into a QTCreator, then I can build in QTCreator. But then I clicked Run qmake out of curiosity and I was back to square one, i.e. compile window asks me for input again and stops there forever.
Apart from my specific question I found no general documentation about building the qt libraries using QTCreator. I only find descriptions about compiling projects that use the Qt library.
Qt is not really meant to be compiled from within an IDE. However, this does not mean it's impossible to do. There are two ways to archive this:
First approach: Add the developer build as custom kit:
Run the configure script (and add the -developer-build option)
Open QtCreator and go to "Tools > Options > Kits"
Go to "Qt Versions" add press "Add" - select the qmake executable generated by the configure script. Then hit "Apply"
Go to "Kits" and press "Add" - Make shure to select the correct compilers and debugger and select the previously create "Qt Version". Press "Ok"
Open the top level .pro file in QtCreator and choose the previously created Kit. QtCreator will now use the correct qmake executable
This is the "proper" way to go. You can now use the project as any normal project, including changes to pro-files. Also, QtCreator now correctly detects the build directory, so you won't have to change that, even when opening one of the modules.
Second approach: Use as a normal project without qmake:
Run the configure script (and add the -developer-build option)
Run make qmake_all in the same terminal to let Qt prepare all makefiles, create headers etc.
Open the top level .pro file in QtCreator. You can choose any kit.
Go to Project > Your Kit > Build and disable the "qmake" step (the first of the default 2 steps)
Change the "build directory" to be wherever you built Qt - either a shadow build or the source directory
Hit Build and QtCreator will invoke make only, archieving the same behaviour as running make from the console.
This is kind of a workaround and I would not recommend using it for a full Qt build, unless the first approach does not work for you for whatever reason.
This can also be useful if you only want to make changes to a single Qt module, without compiling the whole Qt framework, i.e. you can clone one of the submodules and use your "existing" qmake on it instead of compiling QtBase (in that case, you skip step 4)
Final notice: When I tried opening the whole Qt-Project, QtCreator crashed on my system because the project was to big to handle. I would recommend you to only open one of the modules within the super repostitory, i.e. "qtbase", "qtdeclarative", etc.
I'm trying to work on an open-source project in Qt Creator on OSX. When I open the CMakeLists.txt like other CMake projects in Qt Creator it doesn't open the project. No folders, source files, not even the CMakeList.txt shows up in Qt Creator, just a completely blank project.
What could cause a project to do this?
Edit: the project opens properly in Ubuntu. It shows the CMakeLists.txt, source files, and everything. It even builds properly when I CMake in the command line on OSX. Qt Creator in OSX just does not open this project properly.
Eit 2: My build settings are completely empty too. There are no General Messages or messages of any kind.
Open your Preferences (Cmd+, on Mac) and go to the Build & Run and then CMake tab, do you see any CMake version listed there? For me, I have to add a manual entry because it doesn't automatically find my CMake. My manual entry is set to /Applications/CMake.app/Contents/bin/cmake so compare that with what you have in your settings.
Then restart Qt Creator and reopen your project. Go to Build & Run again and make sure the Kit you have selected for your project has a CMake Tool set (should be automatic if you have just the one CMake entry listed on the CMake tab).
Background Information
It looks like you are using Qt Creator 4.0. With that version, they changed a number of things related to how CMake projects are handled. When you first open a project, it won't create the build directory if it doesn't exist. Instead, it will run CMake in a temporary directory. This would be shown in the General Messages output pane if you had it open. Once you manually create the output directory as it appears in your project's Build Settings, Qt Creator will switch to running CMake in there instead. There's no indication this is happening apart from what is logged in the General Messages output pane, even if there's a problem with your CMakeLists.txt.
In your case, if there's genuinely nothing appearing in your General Messages output pane and CMake is working fine from the command line, that suggests something may be wrong with your Qt Creator settings.
I have 2 projects with Qt-creator C++. Let's call it project A and project B. Project A works fine. But project B is strange. Last week when I tried to debug it, it stuck. I re-saved the .pro file (not changing anything) and it works. But now every time I build and debug (which is build and run), qt does rebuild it all. It creates moc_blabla.o again every time I build it. So when I debug project B, qt rebuild it and run, not build and run. But in project A everything works fine. Project A.pro and project B.pro have the same architecture, no special configuration, all is default. Is there something wrong I did in project B? Is there a way I can do a normal build in project B again?
Qt Creator sometimes gets things mixed up, for instance, when you have hand-edited the project file. If your project acts strangely then close all projects and editors in Qt Creator and then delete all intermediate files (*.obj, .o, ...) and outputs (.exe, *.dll, *.lib, *.dylib, ...) produced from your project. Also, delete the .pro.user file(s). The last step will force Qt Creator to configure the project anew (and thus create a new .pro.user file).
All of the above might be achieved through make clean or Qt Creator cleaning steps but I always do it by hand.
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.
Hello i'm a young develop on Qt. I want to know that can we convert project Qt (header, source, form, resource) to a file can run without Qt Creator? And how can we convert it to a file executable on window (.exe)?
The compiler is responsible for making an executable out of the source code. This has nothing to do with Qt.
When you start a program from the QtCreator an executable file is built by the compiler, then started. Have a look in your project folder to find that .exe file.
You dont have to do anything special. Each Qt project has a .pro file that is used for compiling. You need to use qmake on the command line with the .pro file as input. This will generate a makefile that you can then give to nmake.exe (if using Visual Studio compilers) or mingw-make (if you are uisng mingw compilers) to build. These steps will compile your source code into the .exe. Look through documentation of qmake to know more. Qt Creator also does the same steps and you can check out the buildlog in Qt Creator to see it working.
Yes, the exe file that you compile with Qt Creator or alternatively some other IDE or compiler is technically all you need to run the project from there on, except you need to have the linked Qt libraries somehow available to the executable. This is especially important if you plan to run it on a machine different from the one you developed it on. See the Qt documentation on Deploying Qt Applications for other details you may need to consider in that case.