C dynamic library

Dynamic linking has the following advantages over static linking: Multiple processes that load the same DLL at the same base address share a single copy of the DLL in physical memory . Doing this saves system memory and reduces swapping.

Dynamic library – a unit of code and/or assets linked at runtime that may change . However, only Apple is allowed to create dynamic libraries for iOS . You’re not allowed to create these, as this will get your app rejected. (See this other SO post for confirmation and reasoning on such).

A static library must be linked into the final executable; it becomes part of the executable and follows it wherever it goes. A dynamic library is loaded every time the executable is executed and remains separate from the executable as a DLL file.

Dynamic libraries are a collection of object files which are referenced at build time to give the executable information how they will eventually be used, but they aren’t used until run time . In other words, these objects are dynamically linked into executables that use them.

Dynamic or shared libraries occur as separate files outside of the executable files . Thus, it only needs one copy of the library’s files at runtime. At compile time, static libraries stay locked into a program. It contains the file’s programs holding a copy of the library’s files at compile time.

Static libraries, while reusable in multiple programs, are locked into a program at compile time. Dynamic, or shared libraries on the other hand, exist as separate files outside of the executable file . … In contrast, a dynamic library can be modified without a need to re-compile.14 May 2017

When a file is compiled with a dynamic library, instead of copying the actual object code contained in the library, the linker simply scans the code contained and checks for missing symbols .