PLUSWSTOCLS

Message        The use of the <spelling> option has prevented this
               redeclaration of "<variable>" from changing its
               linkage.  The linkage will be that specified by the
               earlier declaration at <location>.

Description    In many cases, the compiler will allow a
               redeclaration of an item to change its linkage.  For
               example, in most modes, if an object is declared with
               extern linkage and later with static linkage, the
               compiler will give it static linkage.  This changing
               of linkage usually causes a warning to be issued.
               However, in cases where interfile optimization has
               been selected (-ifo on UNIX, /PLUS_LIST_OPTIMIZE on
               OpenVMS), the compiler cannot allow a later
               declaration to modify the linkage of a previous
               declaration.

User Action    Change all declarations to use the same linkage.