Qt Creator 4.8.4. windows 7 – 64bit installation

installationqtwindows 7

I have some difficulties with QT, which I need for school for some GUI applications.

I have recently done these steps:

1) mingw-get-inst-20120426.exefrom SourceForge installed to C:\MinGW\ with default settings.

2) Qt libraries 4.8.4 for Windows (minGW 4.4, 317 MB) from QT Project installed to C:\Qt\ with default settings. Here an error occurs:

    !!!There is a problem with your MinQW instalation
    !!!g++ not found in c:\MinGW\bin\
    !!!Do you still want to continue? Yes

I checked c:\MinGW\bin\ there is no such file

3) Qt Creator 2.6.0 for Windows (51 MB)also from QT installed to C:\Qt\gtcreator-2.6.0 with default settings

4) Run the QT IDE

5) Open project or create new project. Another error occurs here

!!!No valid kits fond.

Qt Creator uses the invalid kit Desktop to parse the project.

6) Open Options->Build & Run->Kits (But I don't know how should I set Kits and where to find them).

7) Can you also help me, how to set Qt version
(Options->Buid&Run->Qt Version)? Where do I find qmake.exe?

I also didn't find how to create GUI Application. There is no such option in New File or Project…

Thanks for help.

Best Answer

That is quite tricky ;)

Precompiled Qt (MinGW) is only win32 (not win64).

Precompiled Qt is compiled with MinGW-g++ 4.4 and won't work with other.

You have to download this one: http://get.qt.nokia.com/misc/MinGW-gcc440_1.zip

//// Edit: With this version of MinGW, gdb won't work (it's not python-enabled). Although QtSDK is depracted (and you won't find it on qt-project.org), I highly recommend downloading this online installer and, during the selection of components mark only MinGW. It will come with folder named "pythongdb".

http://www.developer.nokia.com/info/sw.nokia.com/id/da8df288-e615-443d-be5c-00c8a72435f8/Qt_SDK.html (You may need to register. It's free.) ////

Add "Compiler" by g++.exe

Add "Qt Version" by qmake.exe.

Add "Kit" with Compiler and Qt Version configured above. You can try to change debugger from CDB to GDB.

Python 2.7.9+ and 3.4+

Good news! Python 3.4 (released March 2014) and Python 2.7.9 (released December 2014) ship with Pip. This is the best feature of any Python release. It makes the community's wealth of libraries accessible to everyone. Newbies are no longer excluded from using community libraries by the prohibitive difficulty of setup. In shipping with a package manager, Python joins Ruby, Node.js, Haskell, Perl, Go—almost every other contemporary language with a majority open-source community. Thank you, Python.

If you do find that pip is not available when using Python 3.4+ or Python 2.7.9+, simply execute e.g.:

py -3 -m ensurepip

Of course, that doesn't mean Python packaging is problem solved. The experience remains frustrating. I discuss this in the Stack Overflow question Does Python have a package/module management system?.

And, alas for everyone using Python 2.7.8 or earlier (a sizable portion of the community). There's no plan to ship Pip to you. Manual instructions follow.

Python 2 ≤ 2.7.8 and Python 3 ≤ 3.3

Flying in the face of its 'batteries included' motto, Python ships without a package manager. To make matters worse, Pip was—until recently—ironically difficult to install.

Official instructions

Per https://pip.pypa.io/en/stable/installing/#do-i-need-to-install-pip:

Download get-pip.py, being careful to save it as a .py file rather than .txt. Then, run it from the command prompt:

python get-pip.py

You possibly need an administrator command prompt to do this. Follow Start a Command Prompt as an Administrator (Microsoft TechNet).

This installs the pip package, which (in Windows) contains ...\Scripts\pip.exe that path must be in PATH environment variable to use pip from the command line (see the second part of 'Alternative Instructions' for adding it to your PATH,

Alternative instructions

The official documentation tells users to install Pip and each of its dependencies from source. That's tedious for the experienced and prohibitively difficult for newbies.

For our sake, Christoph Gohlke prepares Windows installers (.msi) for popular Python packages. He builds installers for all Python versions, both 32 and 64 bit. You need to:

For me, this installed Pip at C:\Python27\Scripts\pip.exe. Find pip.exe on your computer, then add its folder (for example, C:\Python27\Scripts) to your path (Start / Edit environment variables). Now you should be able to run pip from the command line. Try installing a package:

pip install httpie

There you go (hopefully)! Solutions for common problems are given below:

Proxy problems

If you work in an office, you might be behind an HTTP proxy. If so, set the environment variables http_proxy and https_proxy. Most Python applications (and other free software) respect these. Example syntax:

http://proxy_url:port
http://username:password@proxy_url:port

If you're really unlucky, your proxy might be a Microsoft NTLM proxy. Free software can't cope. The only solution is to install a free software friendly proxy that forwards to the nasty proxy. http://cntlm.sourceforge.net/

Unable to find vcvarsall.bat

Python modules can be partly written in C or C++. Pip tries to compile from source. If you don't have a C/C++ compiler installed and configured, you'll see this cryptic error message.

Error: Unable to find vcvarsall.bat

You can fix that by installing a C++ compiler such as MinGW or Visual C++. Microsoft actually ships one specifically for use with Python. Or try Microsoft Visual C++ Compiler for Python 2.7.

Often though it's easier to check Christoph's site for your package.

Windows – Installing qt combined with MinGW on Windows

The Qt SDK that installed Qt, MinGW, Creator and other tools was created by Nokia, Digia didn't released such SDK yet (they promised one) - anyway if Qt 4.8.x (i think x is 1) is enough you can still download the SDK from Nokia's site.

Also, you shouldn't run configure.exe - that is a tool that configures the build of Qt framework - if you want to build Qt itself, not your application using already built Qt.

As for your -1073741511 problem, that's a dll problem, either you are missing dlls or you are trying to use some incompatible dlls, as for adding to path i think the correct path to the qt dlls needed run-time are in C:\Qt\4.8.4\ bin (please check) and also make sure that you installed and added to path (or copy the dlls) from Qt that is built for the compiler you are actually using.

And also you will need some some dlls for MinGW run-time (again you can add the mingw_install_path\bin to path or copy the dlls from there into the same folder with your application)