I wanted to set up Qt so I could develop applications with it. It all seemed pretty straight forward - i ran the installer and it installed. I then added the path variable to /etc/profile. the qmake -v command works as described in the netbeans docs, but netbeans does not seem to detect the include files required for Qt.
Yup I fixed it:
If you are getting those errors, add the qmake command to your path variable, reboot your computer and then attempt to run the basic QT project in netbeans. It should prompt for a qmake directory. Point that towards QT's bin folder and the project should run. For the the squiggly lines disappeared after a project cleanup.
Related
I have never used qt before, but I got a task to build an already existing application for Windows and Mac using the newest version of qt. What I have done so far is:
Installed Visual Studio Professional 2017.
Installed the latest Qt 5 Open Source.
Note: when installing the QT 5 I installed all of the components under QT/ QT 5.10.1 which were: qt 5.10.1 components and under QT/Tools I installed QT Creator 4.6.0 CDB Debugger Support and MinGW 5.3.0 : qt 5 Tools
I cloned the branch from GitHub that I wanted to build to C:/Projects
Then in Git Bash I cd to the project and tried to run qmake. The first time I had this problem:
"bash: qmake: command not found"
After searching into the problem I found out that I haven't added "Qt/5.10.1/msvc2017_64/bin" to PATH and I added it. Now when I echo $PATH I can see the directory added.
Now after bash recognises qmake and I try to run it it says:
Project ERROR: Cannot run target compiler 'cl'. Output:
===================
Maybe you forgot to setup the environment?
I have no idea how to fix the problem due to the fact that I have never used QT to build anything before. Can you help me?
In the read me file for the application I am trying to build it says:
Step-by-step instructions
1. Clone this branch
2. cd into the project
3. Run qmake - this wil generate Makefiles for all of the project's modules
4.Run make (Use the -j4 of -j flags - this greatly speeds up the build process - see the manual page for make for more info). You can also use the -s flag to silence the output - this also wins you a few seconds.
I am a bit puzzled by the instructions, it does not say to run qmake -project anywhere, but there is a qt project file in the directory that I cd to. Does this mean that I don't have to run qmake -project?
Also I have no idea how to run make by using the -j4 and -j flags and how to run flags in general. Could someone help me?
I believe that for the Cannot Run Compiler 'cl' issue I have some kind of a problem with the set up. Did I install too many components or is it to do with the VS setup?
I highly recommend you to install Qt from the Qt installer, and to use Qt Creator.
However, if you want to use it from source, you first need to get a compiler (ex: MinGW). Then you need to execute the instructions, but you need to use a MinGW (or whatever compiler you use) command prompt, which will automatically set the environment variables needed.
Note that this is Windows specific. On mac and linux, the compiler's environment variables are already set in the default command prompt (if there is a compiler, obviously).
I've a big issue since last week, and I can't find any working solution.
When I compile Qwt 6.1.2 (and try next with 6.1.3) on a Windows 7 32bits with mingw32 console, and after compiling sequence, i have the following message:
usr/bin/sh: C:\Qt\Qt5.6.0\5.6\mingw49_32\bin\moc.exe : command not found
I try to change \ with / in makefile.release/ makefile.debug and it still doesn't work.
I hope someone have a solution for that.
PS: I build Qwt with an other PC with Windows 10 and work normally.
What helped was checking the Windows Path settings and removing all paths that would include a sh.exe binary (in my case Cygwin and Git for Windows). You could also change your Qt console path settings locally. Seems like qmake is generating Makefiles based on if 'sh' was found on the system or not.
Because I am not a Java enthusiast, I decided to use C++ and Qt for one of my projects. However, I came across the big cross-compiling Qt problem, and I am unable to produce an .exe file for Windows users.
My setup
Linux Ubuntu 12.04, with Wine and Qt. qmake -v gives the following output :
QMake version 2.01a
Using Qt version 4.8.1 in /usr/lib/x86_64-linux-gnu
I also have a MinGW32 compiler, which can be found at /usr/bin/i586-mingw32msvc-g++. My Wine drive_c folder contains the following Qt directories :
$HOME/.wine/drive_c/Qt/Qt5.2.0/5.2.0/Src
$HOME/.wine/drive_c/Qt/Qt5.2.0/5.2.0/mingw48_32
The mingw48_32 directory contains the necessary include/ and lib/ directories, which are used in my mkspec file, /usr/share/qt4/mkspecs/win32-x-g++/qmake.conf :
QMAKE_INCDIR_QT = /home/me/.wine/drive_c/Qt/Qt5.2.0/5.2.0/mingw48_32/include
QMAKE_LIBDIR_QT = /home/me/.wine/drive_c/Qt/Qt5.2.0/5.2.0/mingw48_32/lib
The problem
According to most guides I've found about Qt cross-compiling, my setup should be enough to run a simple :
qmake -spec win32-x-g++
make
wine /path/to/my/application.exe
But... nothing's linked. QApplication and every other symbol I use in my program are "not found". No QApplication, no QPushButton, no connect(), no SIGNAL(), no SLOT()...
My objective here is to successfully configure QtCreator to use this setup (in an independent build configuration), so that it can build a Linux executable (through the first and working configuration), and a Win32 .exe (through the MinGW setup above). However, I cannot modify a single build step in QtCreator :
Cannot add a "MinGW" toolchain : it is not available in the "Add" dropdown list.
Cannot change the -spec parameter value in the project build configurations panel. The field is non-editable.
Despite guides and solutions I found all over the Internet, my only solution so far is to send my source code to a virtual Windows machine, and have it create a new project with it. On this VM, I could probably compile for Windows... But of course, this doesn't actually sound like a real "solution" to me...
Is there any way Qt(Creator) has finally made cross-compiling easier now ? I'm getting a bit tired of "symbol not found" errors...
First,
sudo apt-get install mingw-w64
Then, check if Qt Creator finds the toolchain.
Next, until Ubuntu starts providing a mingw-w64-qt package, download the Qt source and build it. This is bound to get messy, and maybe even the simplest thing to do is to install WINE and use a Windows Qt version.
I just started using Qt Creator for creating C++ GUI programs. I just downloaded it and installed it, but the compiling process is throwing me errors. When I try to compile my project (very simple, just a QLabel on the screen...it's my first project) it comes up with the error:
qtcreator_ctrlc_stub: Command line failed:
C:\Users\andrew\Dropbox\Programming\C++\build-
FirstGUIApp-Desktop_Qt_5_1_1_MSVC2012_32bit-Debug\Makefile 10:04:35:
The process
"C:\Users\andrew\Dropbox\Programming\C++\build-FirstGUIApp-Desktop_Qt_5_1_1_MSVC2012_32bit-Debug\Makefile"
exited with code -1. Error while building/deploying project
FirstGUIApp (kit: Desktop Qt 5.1.1 MSVC2012 32bit) When executing step
'Make'
I hunted around for an answer here and here and a couple other places but I'm just confused about the whole thing. I have a couple of ideas of my own but I don't know how to try my ideas. Here are some of my ideas:
1) MinGW isn't in the path or isn't installed
But, if it isn't in the path, how do I put it in? Where is it? I have Code Blocks installed which has MinGW installed, so could I maybe use it from there?
2) the make file is messed up somehow
Again, what could be wrong and how could I fix it?
3) Qt Creator isn't installed correctly.
Obviously, re-install it, but I want to make sure all other options are tried before, because it took me a very long time to download.
I apologize if I'm sounding noobish or it's a stupid question, but I really am confused with all of this. Please be patient with me and try to explain things well and thoroughly. I'm using Windows 8.1 and downloaded the offline installer. Thanks in advance.
UPDATE
Here is a screenshot of my Qt, how can I tell if it is the visual studio or minGW version?
UPDATE
Here is my MinGW Folder in CodeBlocks. Is this the folder with the compiler or is it something else?
For your ideas:
1: if you downloaded from qtproject with binary. then qt and qt creator should be installed under the C:\Qt\Qt5.1.1 then corresponding minGW should be stay in C:\Qt\Qt5.1.1\Tools\mingw48_32\bin\gcc.exe
this is the directory you need. Remember, QtCreator needs two tools to make sure your project and compile and run, qmake and compiler.
Qmake is tool help you translate .pro file into makefile,
compiler (gcc) minGW use gcc to run the makefile, compile your code to binary.
where to figure out tools you are using are correct?
---> qtcreator --> Tools -> Build&Run -> Kits
in here You should be able find different kits, of course you maybe have only one.
Select one, Double check the Qt Version and Compiler is the one you wish to use.
click Manage next to compiler, Every compiler in the Auto-detect should be ok to use.
If you don't see anyone, add one, click Add, MinGW, put C:\Qt\Qt5.1.1\Tools\mingw48_32\bin\gcc.exe like into path. ABI should auto-set depends on your environment.
Answer to your second question, what's wrong with your makefile, no one knows, you should check your .pro, usually makefile are generated by qmake xx.pro. Double check your .pro file and re-run qmake will solve the problem.
in tools->options->build&run check if minGW is actually there in the compiler and kit list
in the project tab (on the left hand side) you can set the environment for the build click the PATH value and add the path to minGW to it (you may need to add a lib and include var so the standard library gets added)
re run qmake from the build menu
double check you have the correct version it looks like you have the visual studio Qt not the minGW version,
Terminal:(in Linux)
sudo apt-get install build-essential cmake libqt4-dev
i'm sorry i dont know why this code works,but i have the same problem in linux and this code worked.
I am trying to set up a development environment to play around with developing Qt apps for Symbian devices. I have succesfully set up the environment and am able to create simple apps such as HelloWorld and get them to run on my device. I would now like to try using the QtMobility package, but I am struggling to get it to work in QtCreator.
I got some sample code for using the camera (initially I only had QtMobility 1.0.2, but I have now downloaded the 1.1.0 technology preview version). I followed the instructions in the help file to install it, here is what I did:
Extracted the zip file to C:\QtMobility
Opened a Qt Command prompt and ran configure (in the QtMobility directory)
Ran mingw32-make
Ran mingw32-make install
Finally I updated my PATH variable to include C:\QtMobility\lib
I went back to QtCreator (restarted it) and looked at the cpp file that first calls the macro QTM_USE_NAMESPACE but it is still underlined in red, because it can't find the qmobilityglobal.h file.
Does anyone know if I have missed anything out during the installation that will tell the QtCreator where to find the QtMobility header files?
mingw32-make suggests you're building for win32-mingw target environment. To work with Symbian SDKs, you should be building for e.g. symbian-abld instead. The configure.bat script will auto-detect the target you are building for. Just make sure that QT_PATH environment variable points to a location where you have a Symbian build of the Qt toolchain.
(Also note that make install is unnecessary with symbian-abld - the build step already puts everything in place in Symbian SDK directories.)