--- a/config/cmake/HDF5UseFortran.cmake
+++ a/config/cmake/HDF5UseFortran.cmake
@@ -181,6 +181,7 @@
          WRITE(8,'(I0)') max_decimal_prec
          WRITE(8,'(I0)') num_ikinds
          WRITE(8,'(I0)') num_rkinds
+         CLOSE(8)
       END PROGRAM FC_AVAIL_KINDS
   "
 )
--- a/m4/aclocal_fc.f90
+++ b/m4/aclocal_fc.f90
@@ -151,6 +151,7 @@
      WRITE(8,'(I0)') max_decimal_prec
      WRITE(8,'(I0)') num_ikinds
      WRITE(8,'(I0)') num_rkinds
+     CLOSE(8)
 END PROGRAM FC_AVAIL_KINDS
 !---- END ----- Determine the available KINDs for REALs and INTEGERs