Compilation is the process of translating the source code (text files) of an app/program library into machine code so that the OS can understand the instructions required for execution.
Loading is the next step in the program life cycle in which the program is transferred to the executable file (memory of the OS).
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The final stage of the program life cycle is runtime . This is when the loaded instructions are executed and all operations specified in the program are performed. At this point, all requested IO operations are performed, such as loading graphical elements or sending data to the API. This is also the stage where programming errors can be detected and dealt with, if necessary. Finally, once all commands have been processed and the task is complete, the program terminates gracefully, ending its life cycle.
Static and Dynamic Linking: Definitions and Key Differences
Linking can occur at each of these stages and is necessary to bring together with the written program other telephone biz program libraries necessary for successful execution. Linking is the process of gathering several machine (object) files to create a single executable file.
Static linking refers to copying all the libraries needed by a program directly into the executable through the linker. This is done at the end of the compilation phase.
Dynamic linking is the process of copying a library by name into an executable during runtime. That is, the OS loads necessary files (shared libraries) into memory only when the program is running.
Static vs Dynamic Linking: Definitions & Key Differences
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When you use the static linking method, you work with statically linked libraries rather than shared (dynamic) libraries. Statically linked libraries are copied BO Leads into memory by the linker and do not need to exist at runtime, so they load much faster and are more portable. However, for dynamically linked libraries, only the name is stored in memory, and the linking process involves loading both memory and the shared library file at run time.
compatibility
Static linking ensures that changes to program libraries do not cause compatibility issues. The reason is that all the code is in a single executable module. With dynamic linking, if a library requires an update, it will no longer be compatible with the rest of the library and the whole application may need to be reworked/adjusted for the program to work .
external library
Changes to external libraries in a statically linked program do not affect the executable. Unless you completely recompile and relink from scratch. Therefore, in order for the program to recognize these changes, you will need to set it up again from scratch.
