diff -ruN hdf5-1.12.1-orig/configure hdf5-1.12.1/configure --- hdf5-1.12.1-orig/configure 2021-07-01 16:31:55.000000000 -0500 +++ hdf5-1.12.1/configure 2021-10-27 04:12:01.000000000 -0500 @@ -29638,7 +29638,7 @@ else cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ - +#include #include "szlib.h" #ifdef FC_DUMMY_MAIN