Qt-opensource-windows-x86-5.15.2.exe -

If you selected MinGW 8.1.0 32-bit during install, the compiler exists at: C:\Qt\Tools\mingw810_32\bin\g++.exe

In Qt Creator:

Let’s test that the installation works by building a minimal “Hello World” GUI. qt-opensource-windows-x86-5.15.2.exe

While Qt 6 has fully embraced CMake, Qt 5.15.2 still maintains qmake (though deprecated). For projects with complex qmake builds, migrating to CMake is a non-trivial task—this installer lets you keep building with minimal friction. If you selected MinGW 8

The filename explicitly contains opensource. This imposes specific legal obligations on the user. qt-opensource-windows-x86-5.15.2.exe