protected use of nc4_file_change_ncid() with ifdef

src/clib/pioc_support.c

@@ -2113,6 +2113,7 @@ PIOc_createfile_int(int iosysid, int *ncidp, int *iotype, const char *filename,
      * generated on the computation processors, with the ncid
      * generated by the I/O processors (which know about all open
      * files). In normal PIO operation, the ncid is generated here. */
+#ifdef NETCDF_INTEGRATION
     if (use_ext_ncid)
     {
         /* The ncid was assigned on the computational
@@ -2123,6 +2124,7 @@ PIOc_createfile_int(int iosysid, int *ncidp, int *iotype, const char *filename,
         file->pio_ncid = file->pio_ncid << ID_SHIFT;
         PLOG((2, "changed ncid to file->pio_ncid = %d", file->pio_ncid));
     }
+#endif /* NETCDF_INTEGRATION */
     PLOG((2, "file->fh = %d file->pio_ncid = %d", file->fh, file->pio_ncid));
 
     /* Return the ncid to the caller. */