It seems that Qt compilation is not possible, I used all the instructions on this page
And downloaded all the files from this link:
But it seems that qmake executable is of wrong format or compiled for the wrong architecture.

The message I get is: /usr/local/Trolltech/QtEmbedded-4.8.6-arm/bin/qmake: cannot execute binary file: Exec format error

root@NanoPi-NEO2:/usr/local/Trolltech/QtEmbedded-4.8.6-arm/bin# file ./qmake
./qmake: ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/l, for GNU/Linux 3.2.0, BuildID[sha1]=c9265f736f1519fee8f967ec0ce9042d5de693b2, not stripped

Please help!