/[NO]SYNTAX_ONLY

  Controls whether the source file is checked only for correct
  syntax.  If you specify the /SYNTAX_ONLY qualifier, no code is
  generated, no object file is produced, and some error checking done
  by the optimizer is bypassed (for example, checking for
  uninitialized variables).

  This qualifier lets you do a quick syntax check of your source
  file, and is especially useful in conjunction with
  /WARNINGS=ARGUMENT_CHECKING.