Ok I see now, that when I configure with toolchain for armbcm from raspbian, it fails, but not because of the compiler ( make goes much further). I will search for another toolchain. I'm curious if the application made by such configured and built qtbase (with previously mentioned armbcm toolchain) will work on Banana.

Now only I have to eliminate the problem with qt ide remote connection
(error "Server sent invalid f"). If anybody knew how, it would be a blessing for me.

Hi and welcome to devnet,

Don't put Qt in your PATH environment variable, it will not help and might even make things worse when building on Windows. You don't need to set all these variable and specially you should not append PATH to all of them. Also, why are you calling configure in C:\Windows\System32 ?