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The former of the previously-mentioned variables adjusts the executables' search path for the shared libraries, while the latter displays the names of the libraries as they are loaded and linked. Apple's macOS dynamic linker is an open-source project released as part of Darwin and can be found in the Apple's open-source dyld project. [11]
A dynamic-link library (DLL) is a shared library in the Microsoft Windows or OS/2 operating system. A DLL can contain executable code (functions), data, and resources. A DLL file often has file extension.dll even though this is not required. The extension is sometimes used to describe the content of the file.
A dynamically linked library (dynamic-link library, or DLL, under Windows and OS/2; shareable image under OpenVMS; [7] dynamic shared object, or DSO, under Unix-like systems) is a library intended for dynamic linking.
A dynamic library is a library that contains functions and data that can be consumed by a computer program at run-time as loaded from a file separate from the program executable. Dynamic linking or late binding allows for using a dynamic library by linking program library references with the associated objects in the library either at load-time ...
Dynamic loading is a mechanism by which a computer program can, at run time, load a library (or other binary) into memory, retrieve the addresses of functions and variables contained in the library, execute those functions or access those variables, and unload the library from memory.
The Windows operating system contains compiled versions of these libraries known as dynamically-linked libraries (), which are executable libraries that can be used by multiple programs while only one copy of the library is loaded into memory.
A filename typically starts with lib, and ends with .a for a static library or .so for a shared object (dynamically linked library). For example, libfoo.a and libfoo.so . Often, symbolic link files are used to manage versioning of a library by providing a link file named without a version that links to a file named with a version.
Load command type 0x0000000D are for dynamically linked shared locations from the application's current path. Load command type 0x00000018 is for a dynamically linked shared library that is allowed to be missing. The symbol names exist in other link libraries and are used if the library is missing meaning all symbols are weak imported.