Qt6 debug libs did not get generated

I wanted to generate the static libraries of Qt6. For the same, I tried generating the debug as well as release libs of Qt6.

The configure command used was:

..\qt5\configure -debug-and-release -prefix D:\Qt6\staticlibs2 -commercial -confirm-license -make libs -nomake tools -nomake examples -nomake tests -static

After the cmake --install, I see only release libs in the "prefix" path but i can see the release as well as debug .prl files. 

If I go to the build directory, I can see both debug and release libs in the qt5/qtbase/lib directory.

How to get the debug libs in the "-prefix" path ?

(Images are attached for reference)