as(1)                  UNIX System V(C Development Set)                   as(1)


NAME
      as - assembler

SYNOPSIS
      as [options] file

DESCRIPTION
      The as command creates object files from assembly language source files.
      The following flags may be specified in any order:

      -o objfile  Put the output of the assembly in objfile.  By default, the
                  output file name is formed by removing the .s suffix, if
                  there is one, from the input file name and appending a .o
                  suffix.

      -n          Turn off long/short address optimization.  By default,
                  address optimization takes place.

      -m          Run the m4 macro processor on the input to the assembler.

      -R          Remove (unlink) the input file after assembly is completed.

      -dl         Obsolete.  Assembler issues a warning saying that it is
                  ignoring the -dl option.

      -T          Accept obsolete assembler directives.

      -V          Write the version number of the assembler being run on the
                  standard error output.

      -Q{y|n}     If -Qy is specified, place the version number of the
                  assembler being run in the object file.  The default is -Qn.

      -Y [md],dir Find the m4 preprocessor (m) and/or the file of predefined
                  macros (d) in directory dir instead of in the customary
                  place.

FILES
      By default, as creates its temporary files in /var/tmp.  This location
      can be changed by setting the environment variable TMPDIR [see tempnam in
      tmpnam(3S)].

SEE ALSO
      cc(1), ld(1), m4(1), nm(1), strip(1), tmpnam(3S), a.out(4)

NOTES
      If the -m (m4 macro processor invocation) option is used, keywords for m4
      [see m4(1)] cannot be used as symbols (variables, functions, labels) in
      the input file since m4 cannot determine which keywords are assembler
      symbols and which keywords are real m4 macros.




10/89                                                                    Page 1

as(1)                  UNIX System V(C Development Set)                   as(1)


      The .align assembler directive may not work in the .text section when
      long/short address optimization is performed.

      Arithmetic expressions may only have one forward referenced symbol per
      expression.

      Whenever possible, you should access the assembler through a compilation
      system interface program such as cc.














































Page 2                                                                    10/89