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Interesting fact - most Mach-based operating systems did not use Mach-O as their binary executable format (NeXT/OpenStep, OSX/macOS and the derived mobile syste
by johndoe0815 4y ago
Interesting fact - most Mach-based operating systems did not use Mach-O as their binary executable format (NeXT/OpenStep, OSX/macOS and the derived mobile systems do). a.out (MacMach), COFF (Digital Unix) and ELF (MkLinux) were more common.
Fun fact - the first public version of NeXTstep, 0.8, still supported the execution of (SunOS 3-compatible) a.out 68k binaries in addition to a.out, probably because the development of NeXTstep started on 68k Sun 3-series machines. The a.out compatibility was removed in 0.9.