A computer program that combines object files into executable programs, or a person/thing that creates connections between separate elements.
From English 'link' plus agent suffix '-er,' dating to the mid-20th century in computing contexts. The word 'link' itself comes from Old Norse 'hlekk-r' meaning a loop or chain.
In programming, linkers perform the crucial but often invisible task of resolving symbols - when your code calls a function from a library, the linker figures out exactly where that function lives in memory. Modern linkers are incredibly sophisticated, capable of optimizing code and even removing unused functions to create smaller, faster programs.
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