Why do I get the error: '__GNUC__' and '__clang_major__' not defined as a preprocessor macro.

Hello @BRGDemianLopez and thanks for the reply.

I am sorry for this very late response. I contacted the author of plugin and he fixed the issue. It was link to some dependencies and library that was not included.

Here is the link to the new version: GitHub - ssav7912/GDALforUE5: Provides access to the GDAL/OGR API inside the Unreal Engine

Thank you