What is linkers?

Linkers are computer software programs that are responsible for creating executable files from object files generated by compilers or assemblers. The linker merges the object files into a single binary file that can be executed on a machine. It accomplishes this by resolving all the unresolved symbols found in the object files, generating relocation information and laying out sections in memory in preparation for loading. The result is an executable file that can be loaded into memory and executed by the operating system or the processor. A linker can also perform other tasks such as stripping out debug information, applying optimizations to the final file, and creating shared libraries. Linkers are an essential part of the software development process and are typically provided as part of the compiler suite. Examples of popular linkers include Microsoft Link, GNU Linker (ld), and Apple Linker (ld).