This is for building in Windows.

(Might have to pacman -S mingw-w64-x86_64-glib2)

cp * /home/pjr/vbox_shared/pedro_win
cd /home/pjr/vbox_shared/pedro_win
./init_port 6.9   (whatever the version number is)
Then go to virtualbox and then double click on cp2win.bat
Then start msys2 (64) cd  /home/pjr/pedro6.9  (or whatever)
Then sh prepare_rel

Now double click on build_pedro - installer in Output