libSystem
E246562
libSystem is the core system library in Darwin-based operating systems (like macOS and iOS), providing fundamental C runtime, POSIX, and low-level system interfaces used by nearly all user-space programs.
All labels observed (1)
| Label | Occurrences |
|---|---|
| libSystem canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2257098 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: libSystem Context triple: [Darwin, includesComponent, libSystem]
-
A.
I/O Kit
I/O Kit is macOS and iOS’s object-oriented driver framework that manages hardware devices and their interaction with the operating system.
-
B.
GNU C Library
The GNU C Library (glibc) is the GNU Project’s core implementation of the standard C library, providing fundamental system call wrappers and APIs used by most GNU/Linux and Unix-like systems.
-
C.
POSIX
POSIX is a family of standardized operating system interfaces and utilities that ensure compatibility and portability among Unix-like systems and applications.
-
D.
Sistema
Sistema is a consumer food storage and kitchenware brand known for its reusable plastic containers and lunch solutions.
-
E.
System V derivatives
System V derivatives are a family of Unix operating systems that evolved from AT&T’s UNIX System V, shaping many commercial Unix variants and standards.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: libSystem Target entity description: libSystem is the core system library in Darwin-based operating systems (like macOS and iOS), providing fundamental C runtime, POSIX, and low-level system interfaces used by nearly all user-space programs.
-
A.
I/O Kit
I/O Kit is macOS and iOS’s object-oriented driver framework that manages hardware devices and their interaction with the operating system.
-
B.
GNU C Library
The GNU C Library (glibc) is the GNU Project’s core implementation of the standard C library, providing fundamental system call wrappers and APIs used by most GNU/Linux and Unix-like systems.
-
C.
POSIX
POSIX is a family of standardized operating system interfaces and utilities that ensure compatibility and portability among Unix-like systems and applications.
-
D.
Sistema
Sistema is a consumer food storage and kitchenware brand known for its reusable plastic containers and lunch solutions.
-
E.
System V derivatives
System V derivatives are a family of Unix operating systems that evolved from AT&T’s UNIX System V, shaping many commercial Unix variants and standards.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
core operating system component
ⓘ
shared library ⓘ system library ⓘ |
| componentOf |
Darwin user-space
ⓘ
iOS runtime environment ⓘ macOS runtime environment ⓘ |
| contains |
POSIX compatibility layer
ⓘ
low-level kernel interaction stubs ⓘ standard C library components ⓘ |
| dependencyOf |
macOS Cocoa
ⓘ
surface form:
AppKit framework
Foundation framework ⓘ UIKit ⓘ
surface form:
UIKit framework
|
| implements |
C standard library (partial)
ⓘ
POSIX standard APIs (partial) ⓘ |
| language |
C
ⓘ
Objective-C (bridging and runtime support) ⓘ |
| linkType | dynamically linked ⓘ |
| maintainedBy | Apple Inc. ⓘ |
| operatingSystemFamily | Darwin ⓘ |
| platform |
macOS
ⓘ
surface form:
Apple Darwin
|
| provides |
C runtime
ⓘ
POSIX interfaces ⓘ dynamic loader support ⓘ file system APIs ⓘ libc implementation ⓘ libdispatch integration ⓘ libm implementation ⓘ libpthread implementation ⓘ locale and internationalization support ⓘ low-level system interfaces ⓘ math library functions ⓘ memory management APIs ⓘ networking APIs ⓘ process control APIs ⓘ pthread implementation ⓘ signal handling APIs ⓘ standard C library functions ⓘ threading APIs ⓘ time and date functions ⓘ |
| role |
core user-space dependency
ⓘ
foundation for higher-level frameworks ⓘ |
| usedBy |
nearly all user-space programs on iOS
ⓘ
nearly all user-space programs on macOS ⓘ |
| usedInOperatingSystem |
iOS
ⓘ
iPadOS ⓘ macOS ⓘ tvOS ⓘ watchOS ⓘ |
| visibility | system-wide ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: libSystem Description of subject: libSystem is the core system library in Darwin-based operating systems (like macOS and iOS), providing fundamental C runtime, POSIX, and low-level system interfaces used by nearly all user-space programs.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Darwin (operating system)