* one more define added for shared fexpand (still conditional)

rtl/macos/dos.pp

@@ -792,6 +792,7 @@ End;
 
 {$DEFINE FPC_FEXPAND_VOLUMES}
 {$DEFINE FPC_FEXPAND_NO_DEFAULT_PATHS}
+{$DEFINE FPC_FEXPAND_DRIVESEP_IS_ROOT}
 
 { TODO A lot of issues before this works}
 
@@ -799,6 +800,8 @@ End;
 
 {$UNDEF FPC_FEXPAND_VOLUMES}
 {$UNDEF FPC_FEXPAND_NO_DEFAULT_PATHS}
+{$UNDEF FPC_FEXPAND_DRIVESEP_IS_ROOT}
+
 
 
 {$ELSE}