Table of contents
Choose which version of QT to install
Which components to choose during installation
work before installation
ubuntu20.04.3 install Qt6.22 operation steps_ubuntu install qt6_sonicss Blog
# 安装g++、gcc编译器
sudo apt-get install build-essentialInstall libgl1-mesa-dev, the OpenGL library, to prevent Qt from appearing when compiling the project:
/usr/bin/ld: cannot find -lGL错误
After the installation is complete, enter gcc -v in the console to view the version number, mine is 9.4
lrj@lrj-HLY-WX9XX:/etc/apt/keyrings$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/9/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:hsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 9.4.0-1ubuntu1~20.04.1' --with-bugurl=file:///usr/share/doc/gcc-9/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,gm2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-9 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/gcc-9-Av3uEd/gcc-9-9.4.0/debian/tmp-nvptx/usr,hsa --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1) Choose which version of QT to install
I chose version 5.15 , because the Tsinghua image has:
https://mirrors.tuna.tsinghua.edu.cn/qt/official_releases/qt/5.15/5.15.10/single/But
an error was reported during installation
Which components to choose during installation
The two in the red box are mandatory. If you find it troublesome, you can check them all. It’s okay to install more points.
- Desktop gcc 64-bit This is a 64-bit Qt library pre-compiled by Qt.
- Developer and Designer Tools This is our protagonist QtCreator
Install Qt5.15
For ordinary users, after Qt5.15, all open source versions no longer provide offline installation, and can only be installed online, or use static compilation. The installation packages for two different installation methods are given below.
Online installation package
source package
Install online
Online installation is recommended for two reasons:
- Online installation can choose QT version when installing
- Online installation avoids complicated source code compilation process (I personally think that some software source code installation is a kind of torture in China, such as opencv)
Click on the online installation package above to download the installation package
Then grant execute permission:
sudo chmod a+x qt-unified-linux-x64-4.6.0-online.runRun the installer:
./qt-unified-linux-x64-4.6.0-online.run --mirror https://mirror.nju.edu.cn/qt Then I forgot the password of my qt account, and the website could not be loaded after changing the password, it hurts, it hurts too much
In the process of tossing, I changed the password of the qt account with my mobile phone. Yes, I can change it with my mobile phone.
components of my choice
Qt Design Studio is a tool for creating interactive user interfaces (UI )
DEsktop Source must be selected
Qt Creator is an integrated development environment (IDE), dedicated to the development of Qt application IDE
CMake is a cross-platform build tool used to generate build files for different operating systems and compilers.
Ninja is an efficient build tool, mainly used to build code. Let's install it, it's not bad for this little space , although I didn't use it before
After installation, I found out that Qt Design Studio actually doesn’t need to be installed, because there is UI design in QT Creator
Source package installation
The compilation process is a bit cumbersome and will not be updated for the time being
test
Click on this icon in the lower left corner:
Click on the QT Creator icon:
In the QT Creator interface, click File, click New Project, select Non-Qt Project in the left column, and select Plain C++ Application in the right column
Build system selection CMake:
Ctrl + R runs the following code:
According to the execution results in the above figure, this Qt installation can run C++ code without any problem!
This is the end of this record, if you encounter any problems, please leave a message below!
Many thanks also to the authors of the blogs referenced in this article for their articles!