Qt5.15 Download -

mkdir build && cd build ../configure -prefix /path/to/install -opensource -confirm-license -nomake tests make -j$(nproc) make install If you don't want to deal with Qt accounts or installers, use your system's package manager. Note: These may not be the exact 5.15.2 but close patch versions.

brew install qt@5 This installs the latest Qt5 (likely 5.15.x). Pin it to prevent auto-upgrade. qt5.15 download

https://download.qt.io/archive/qt/5.15/5.15.2/single/ Look for qt-everywhere-src-5.15.2.tar.xz . mkdir build && cd build

alongside each file is a .md5 or .sha1 file. On Linux/macOS: qt5.15 download

sudo apt install qt5-default qtbase5-dev qtbase5-dev-tools

md5sum qt-opensource-linux-x64-5.15.2.run Compare the output with the contents of the .md5 file.