I installed Qt 5.12.0 on macOS Catalina 10.15.6, but my Qt Assistant is empty. I googled and it turns out I may need to download the .qch manually. Since I searched .qch in finder, no results. However, I couldn't find the corresponding source according to the keyword qt assistant qch5.12.0 download
Are you using the Qt online installer to install Qt? If yes, you should find .qch files in $QTDIR/Docs/Qt-5.12.0 (where QTDIR is the directory Qt is installed to, so e.g. ~/Qt.
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So it looks like with Digia taking Qt over from Nokia, that it's quite a mess to get a few simple downloads.
If I now go to the downloads page (http://qt-project.org/downloads), I see that there's a single Qt Creator 2.6.2 download for Windows. When I download this and run the installation, it seems that MinGW is no longer packaged along with it.
I tried to install MinGW 4.4 separately and then add a toolchain, but nothing runs when I try to compile my CMake-based project.
I then came across the Nokia website that is offering Qt SDK 1.2.1; however it now looks that they require you to create an account to be able to download the installer.
Downloading the full set of Qt libraries is probably what is going to be suggested, but that's not the best idea, because I'm basically writing up an installation procedure for a CMake-based, open-source set of libraries that I've been working on for a while (http://tudat.tudelft.nl).
Users aren't happy with having to download all the Qt libraries, since we're not using any of them.
I've completely run out of solutions now (and mind you, this only seems to be a problem for Windows, since when I install Qt Creator on Linux and Mac, GCC auto-detection seems to work fine).
So, in short, does someone have a simple install routine to install Qt Creator and get it to work with MinGW to compile a CMake-based project?
Thanks in advance!
Kartik
PS: I know there are plenty of threads on Qt Creator + MinGW, but they all seem to be outdated now with the recent changes on both the Digia and Nokia websites.
I should add that the problem specifically is not that the toolchains can't be auto-detected under Windows. I've managed to get both MinGW and CMake auto-detected by Qt Creator by adding both to the system path. The problem is that when I then try to open the CMakeLists.txt file for my project, I can't select any generators.
Straight forward:
Install Qt Framework
Install MinGw
Install CMake
Install other stuff, e.g. git
Install Qt Creator
As you already mentioned, the chances are good that Qt Creator gets everything via auto detect. Nevertheless, you should check the Qt settings if everything is in place, e.g. the debugger.
The first time you open a cmake project, Qt Creator (should) ask for the tool chain to use. If you want to change the chain afterwards, delete the build files and cmake directories.
More details to Qt Creator and cmake: http://qt-project.org/doc/qtcreator-2.7/creator-project-cmake.html
I want to view Qt reference documentation inside QtAssistant, but the installation of Qt5 did not come with .qch documentation files for Qt libraries.
I have tried to find them on the http://qt-project.org but could not find them anywhere.
How do I get the Qt5 documentation files ?
I am using Ubuntu 12.10, I have installed the new qt-library sdk from the qt-project website.
Open Assistant (5.0.1/gcc/bin/assistant) and then go to Edit -> Preferences menu.
There's a Documentation tab. If the list is empty, add the .qch files found in the 5.0.1/gcc/doc/ directory.
This is how it looks. This is Ubuntu 12.10 as well.
Qt 5.0.1 installed with the qt-linux-opensource-5.0.1-x86-offline.run package (388Mb).
Yes, the official Ubuntu-documentation for Qt5 is very incomplete. You don't have information about nearly any class.
If you want to use the QtCreator/QtAssistant build from Ubuntu you have to acquire the docs yourself. I did and uploaded these on my personal Mega-account. Here are the docs. I installed the Qt framework with the installer from qt-project.org, grabbed the documentation and inserted it into the software-center-version.
I don't use QtAssistant as a stand-alone program but integrated in QtCreator. To add the docs to QtCreator go to Tools>Options>Help>Documentation and click add. Then select all .qch files, click apply and enjoy. Maybe try the way as mentioned above.
After all, you can just download the necessary *.deb file from the store of the Ubuntu packages, and install it on your system. As they wrote here, this package will install the *.qch files in /usr/share/qt5/doc. The pitfall is that you will have to remember that you have done that, since your Ubuntu will not take any records for you.
I haven't used Qt on Windows in a while. I know that now we're supposed to download the open source version from the Qt Project website.
But the page at http://qt-project.org/downloads has separate links to installers for Qt libraries and Qt Creator. I remember being able to just download the full SDK and get started, but now I have t separately install MinGW, the libraries and Qt Creator.
Can I still get the libraries and Qt Creator in a single bundle, and if yes, where should I look?
Digia distributes the SDK now. Not sure if it's still free. http://qt.digia.com/Product/Qt-SDK/
I just downloaded Qt SDK from http://download.cnet.com/Qt-SDK/3000-2069_4-75305206.html
It seems to be working, although windows says the installer is unsigned.
There is a installation guide plus full SDK (1.2.1), both LINUX/WINDOWS including supplemental files. No non-functional Windows-MinGW installation is required here.
Qt was messing up on Windows so I deleted it and re installed it with the qt libraries and Qt Creator. Now, whenever I try to open my old project, I get the error that "Qmake is does not exist or is not executable", and none of the Qt headers can be located.
Assuming you're using a recent version of Qt, such as version 4.7.4, and a recent version of Qt Creator, such as the branch 2.3 .*.
Probably somewhere in this process, Qt Creator or the settings for this specific project lost the reference to Qt install.
We first need to find out if Qt Creator knows where Qt is installed. Go to Tools > Options.... Then click in Qt4. Here will show all installed and detected Qt versions.
As you can see, I have one Qt version installed (4.7.4), which was automatically detected.
If you do not have any installed version, you need to indicate a one manually. Simply click Add and point it to the right qmake.exe. Use the paths of the figure as reference. If you are developing a windows/mingw application, just need to add the qmake.exe associated with mingw (c:\qtsdk\desktop\qt\4.7.4\mingw\bin\qmake.exe on my computer) and remember the Version name, we'll need that in next step.
After that, open the project and click on Projects in the lateral bar. You need to Substitute the Qt version. Click on Manage next to it and select the correct version. This should resolve the problem.
Any trouble just comment. Sorry about the creepy english.
want to know if it is adviseable to install the Qt SDK in the Developer/SDKs folder. I wanted to put it in there but I get the following warning:
You have selected an existing, non-empty folder for installation.
Note that it will be completely wiped on uninstallation of this application.
It is not advisable to install into this folder as installation might fail.
Do you want to continue?
Where is the best place to put it. I had QT SDK installed earlier, but while compiling some examples he couldnt find the header files. The installation guide from trolltech is a bit confusing. Thanks in advance
The reason you are seeing that message from the Qt SDK installer is that it expects you to append a new folder name to the path. The default installation location for the Qt SDK is
~/QtSDK
If you wanted to place it in Developer/SDKs, you should enter
/Developer/SDKs/QtSDK
The /Developer/SDKs folder is the normal location for Mac OS X SDKs, as used by Xcode and the GNU toolchain. Xcode looks inside subfolders of /Developer/SDKs to populate the list of available SDKs in the Base SDK project setting, so I would avoid placing Qt here and leave that location for Mac system SDKs.