Which C++ version required?

[CertHaramas]

Hello,
I can't find information about which minimal C++ version ("dialect") is required to build the IFC++.
I'd like to compile the IFC++ with Visual Studio 2008 but the published .sln needs a higher version (2017?). So am I to try to make a .sln for VS 2008? (Knowledge about min. C++ version required would be nice for this.)
Best regards,
Lukas

[ifcapps]

I use C++ 20 and the current up-to-date version of VS.
It may work with older versions, but I can not guarantee.

[CertHaramas]

OK, thanks for the reply, I'll try.