// main.cpp #include <QApplication> #include <QLabel> int main(int argc, char *argv[]) QApplication app(argc, argv); QLabel label("Hello Qt 5.15!"); label.show(); return app.exec();
sudo apt install qt5-default qtbase5-dev qtbase5-dev-tools
git clone https://code.qt.io/qt/qt5.git cd qt5 git checkout 5.15 perl init-repository qt5.15 download
Ubuntu 20.04 LTS has Qt 5.15.2 in its official repos:
git clone https://github.com/Microsoft/vcpkg cd vcpkg .\bootstrap-vcpkg.bat .\vcpkg install qt5-base:x64-windows // main
https://download.qt.io/archive/qt/5.15/5.15.2/qt-opensource-windows-x86-5.15.2.exe
https://download.qt.io/archive/qt/5.15/5.15.2/single/ Look for qt-everywhere-src-5.15.2.tar.xz . https://download
Verify the tag signature:
By following this guide, you will successfully download and install Qt 5.15 regardless of your platform or license type. Remember: the golden rule of Qt 5.15 open-source access is .
https://download.qt.io/archive/qt/5.15/5.15.2/qt-opensource-linux-x64-5.15.2.run Download the file, make it executable on Linux/macOS ( chmod +x filename ), and run it. You'll still need a Qt account login. C. Source Code (For advanced users, cross-compiling, or custom builds) If you want the absolute latest Qt 5.15 patch level (e.g., 5.15.12+), you must build from source.