Cross compilation for RPI3 under Windows

Marthi

Hello,

I am trying to have a cross compilation environement for RaspberryPi 3 under Windows 10. I read and tried many tutorials and weird things but I cannot figure out. I have the impression that the configure line change every Qt version.
I tried to use native commande line and MSYS2, several Qt version, many differents arguments and modify some qmake.conf files.

For now, I am working with :

Qt 5.14.2 sources from MaintenanceTool.exe
SysGCC RPI toolchain from here (GCC 8.3.0)
SysGCC MINGW64 toolchain from here (GCC 9.1.0)
My sysroot folder on Windows host is synchronized with my RPI.

My command line is :

..\Src\configure.bat -platform win32-g++ -device linux-rasp-pi3-g++ -release -opengl es2 -sysroot C:/SysGCC/raspberry/arm-linux-gnueabihf/sysroot -prefix /usr/local/qt5 -device-option CROSS_COMPILE=arm-linux-gnueabihf- -opensource -confirm-license

From Qt documentation here and here, my command seems to be correct but I get the error :

Running configuration tests...
Checking for machine tuple... yes
Checking for valid makespec... yes
Checking for target architecture... Project ERROR: Could not determine target architecture. See config.log for details.

I don't know how to upload the config.log file to the post but there are some compilation errors of arch.cpp related to system include files in RPI toolchain so I guess that I don't configure it well related to my toolchain.

Thank you for your help,

Marthi