To do this, install the following package. If you have multiple versions of Qt, you probably want 5 to be the default QTCreator version to use. Of course, that is the only way to install the IDE, but if we do not install the necessary libraries and compilers, it will not do us any good. So, open a terminal and run the following: :~$ sudo apt install qtcreator If we want to develop calmly sacrificing a little the new features of each version, the ideal is to choose this method. The first is through the main distribution repositories. Install QTCreator on Ubuntu 20.04 / 18.04īasically, there are two ways to install QTCreator on Ubuntu 20.04/ 18.04. So let’s start installing QTCreator on Ubuntu. QTCreator is related to C++ development but supports other programming languages such as Python and C#. Since its conception, QTCreator does not intend to rival other IDEs like Eclipse or Netbeans, but on the contrary to serve as a gateway to QT development. It is also designed to make C++ development of the Qt application faster and easier. QTCreator is a lightweight, open-source framework that integrates seamlessly with many QT developer needs. There is no better way to take advantage of QT than by using QTCreator. But also, applications known as VLC use it. Many large applications use QT, such as the Plasma desktop environment and its applications. It is thought in the beauty and uniformity of the elements, as well as in the correct execution of the same ones. QT is a framework of libraries to make graphical user interfaces. Also, add some small configurations so you can start as soon as possible. With the goal of creating fabulous applications with QT, is that in this post, I will teach you how to install QTCreator in Ubuntu 20.04 / 18.04. In fact, Plasma and its applications are built with Qt. However, many of these applications require graphical components and in Linux, QT is one of the most respected. Some of them already veterans like Fortran, Java, C++ or newer ones like V, Python, PHP, Go, or Rust. With this in mind, Ubuntu in its repositories has many applications to develop on different platforms and with numerous language support. Let’s say that many developers who start their adventure in programming, require quality applications but also free. Linux is perhaps the best operating system for the development of applications for its stability and price. But when the build directory is empty, it will fail.Taskset Cheatsheet | Pandoc Cheatsheet | Curl Cheatsheet | Grep CheatSheet | Cron CheatSheet | Grep CheatSheet | More! It will still show the errors all over my code and in the issues section, but will build and run anyways, so the build commands should be fine. Also, when I have a complete build in the build directory that's set in QtCreator, QtCreator will build my projects, even when I change something. I can still build all projects manually, again both cmake and qmake work here. home/$me/src/untitled/main.cpp:8: error: unknown type name 'MainWindow' When I create a new project in QtCreator without changing anything from the default code, it's the same: /home/$me/src/untitled/main.cpp:7: error: variable has incomplete type 'QApplication'` I do have (and need) different gcc and g++ versions installed (9 and 8) (reinstalled both after the update as the update-alternatives settings were broken and one dependency was upgraded from 6 to 8).The problem occurs in both cmake and qmake projects.usr/include/c++/8/ostream:41: candidate found by name lookup is 'std' Some examples: error: 'std::string' (aka 'int') is not a class, namespace, or enumerationĮrror: no matching function for call to 'getline'Įrror: member reference base type 'std::ifstream' (aka 'int') is not a structure or unionĮrror: no template named 'vector' in namespace 'std'Įrror: unknown type name 'SystemCallFactory' //this class is from the same projectĪnd even some errors in the qt and std libraries: /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:1374: passing argument to parameter 's' here The error messages all look like linker error messages. It's showing thousands of error messages in projects that have worked perfectly fine before the update. But my QtCreator ( Qt Creator 4.11.0, Based on Qt 5.12.8 (GCC 9.3.0, 64 bit)) is facing problems recognizing included libraries. I've upgraded from Ubuntu 18.04 to 20.04 and besides some nasty grub issues most things worked out of the box.
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