/SYNTAX_ONLY D=/NOSYNTAX_ONLY

 /[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.