I am currently dabbling in OS Development, and one of the main tasks is to build an i386-elf-tools toolchain. I am following the playlist https://www.youtube.com/playlist?list=PLm3B56ql_akNcvH8vvJRYOc7TbYhRs19M and all the code so far has worked, until the last video when we start to write C++ code. I got my i386 binaries from https://github.com/nativeos/i386-elf-toolchain/releases/tag/preview.