Mac OS X uses Mach-o executable format and FreeBSD Unix uses ELF executable format. OS X uses FreeBSD Unix, correct me if I'm wrong. Then why does the Executable format in OS X differ from that of FreeBSD Unix?


Very short answer: OSX combines a Mach kernel with a BSD Unix toolset and libraries. The Mach heritage (via NeXTSTEP) lead to the use of Mach-O as the executable format.

See this answer for more details: https://unix.stackexchange.com/a/713/24313

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.