Editing Mach-O (section)

{{short description|File format for executables, object code, shared libraries, and core dumps}}
{{About|the file format|other uses|Mach O (disambiguation){{!}}Mach O}}
{{Use mdy dates|date=October 2013}}
{{More footnotes needed|date=February 2021}}
{{Infobox file format
| name          = Mach-O
| icon          = [[Image:ExecutableBinaryIcon.png|64px|Mac OS X Executable Binary icon]]
| extension     = none, <code>.o</code>, <code>.dylib</code>, <code>.kext</code><ref>{{cite book |url=https://www.cs.miami.edu/home/burt/learning/Csc521.091/docs/MachOTopics.pdf |title=Mach-O Programming Topics |date=2006-11-28 |publisher=Apple}}</ref>
| mime          = 
| type code     = 
| uniform type  = com.apple.mach-o-binary
| owner         = [[Carnegie Mellon University]], [[Apple Inc.]]
| genre         = [[Binary file|Binary]], [[executable]], [[object code|object]], [[shared libraries]], [[core dump]]
| container for = [[ARM architecture|ARM]], [[SPARC]], [[PA-RISC]], [[PowerPC]] and [[x86 architecture|x86]] [[executable]] code, memory image dumps
| contained by  = 
| extended from = 
| extended to   = 
| standard      = 
}}

'''Mach-O''' ('''Mach object''') file format, is a [[file format]] for [[executable]]s, [[object code]], [[shared libraries]], dynamically loaded code, and [[core dump]]s. It was developed to replace the [[a.out]] format.

Mach-O is used by some systems based on the [[Mach kernel]]. [[NeXTSTEP]], [[macOS]], and [[iOS]] are examples of systems that use this format for native executables, libraries and object code.