When building the engine on MinGW, some applications fail to link due to duplicate symbols coming from the import library, which makes no sense. The size of import libraries is ridiculous for DLLs exporting just one public symbol. Apparently there is an issue with the linker that adds a bunch of stuff to the import library even though all symbols are hidden.

https://stackoverflow.com/questions/54331717/duplicate-symbol-defined-in-a-dll-import-library-in-mingw-build