VMS Help  —  CC  Messages  UNKNOWNLINK
 Message        The specified linkage is undefined.  Pragma is
                ignored.

 Description    The linkage specified in a #pragma use_linkage
                directive has not been defined by an earlier #pragma
                linkage directive.  The compiler will ignore the
                entire pragma.

 User Action    Either define the linkage first or change the linkage
                name.
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