assembly - How was the first C compiler written? -


is true first c compiler written in c itself? then, how executed , compiled? or, compiler written in assembly language?

it described pretty in dennis ritchie's writeup of c language history.

giving summary of wrote there, use article finer details. c started bcpl language, ken thomson had access compiler ran on general electrics 635 main frame. unhappy language, thomson used bcpl write compiler b language, evolutionary step beyond bcpl removed of technical problems in bcpl.

they used b create programs on pdp-7 minicomputer, although of them little more toy programs, machine had restricted hardware capabilities. 1 important step taken thomson rewrite b compiler in b itself. common bootstrapping step.

that compiler gradually tweaked, through short-lived intermediary step called nb (new b) start resembling c. pdp-11 minicomputer instrumental in step, giving them enough room improve language , compiler.


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