There is a proposal for this: https://github.com/microsoft/ifc-spec https://github.com/microsoft/ifc-spec Only Microsoft implements that so far. I gather EDG (

There is a proposal for this: https://github.com/microsoft/ifc-spec https://github.com/microsoft/ifc-spec Only Microsoft implements that so far. I gather EDG (which powers IntelliSense) has been at least researching support for consuming IFC files. I'm not aware of anyone sponsoring work in Clang or GCC to add IFC support.