as

Portable GNU assembler. Primarily intended to assemble output from gcc to be used by ld. More information: https://manned.org/as.

  • Assemble a file, writing the output to a.out:

as path/to/file.s

  • Assemble the output to a given file:

as path/to/file.s -o path/to/output_file.o

  • Generate output faster by skipping whitespace and comment preprocessing. (Should only be used for trusted compilers):

as -f path/to/file.s

  • Include a given path to the list of directories to search for files specified in .include directives:

as -I path/to/directory path/to/file.s