diff -ru silo/src/hdf5_drv/silo_hdf5.c silo.fixed/src/hdf5_drv/silo_hdf5.c
--- silo/src/hdf5_drv/silo_hdf5.c	2021-09-09 12:35:00.000000000 -0700
+++ silo.fixed/src/hdf5_drv/silo_hdf5.c	2022-12-02 10:34:34.560531000 -0800
@@ -198,6 +198,7 @@
 #endif
 #ifdef HAVE_ZFP
 #include "H5Zzfp.h"
+extern void zfp_init_zfp();
 #endif
 
 /* Defining these to check overhead of PROTECT */