Ok, so now I managed to install b2.exe with the following command line in the VB developer console:
b2.exe --without-python address-model=64 --prefix=%CD%
Next step was the cmake-gui.
After following the guide on the git page it started compiling, but stopped with the error message:
'Error in configuration process, project files may be invalid'.
In my target path there is a CMakeError.log file with 13 various fatal errors.
Here are a few examples:
'fatal error C1083: Cannot open include file: 'pthread.h': No such file or directory'
'fatal error C1083: Cannot open include file: '/var/lib/oss/include/sys/soundcard.h': No such file or directory'
'fatal error C1083: Cannot open include file: '/usr/local/lib/oss/include/sys/soundcard.h': No such file or directory'
Any idea what might be wrong here?