Fail the configuration if HDF5 support is requested but is not available.

configure.ac

@@ -421,15 +421,9 @@ AC_ARG_ENABLE([hdf5],
               [hdf5=false])
 
 AS_IF([test x"$hdf5" != xfalse],
-      [ AC_LIB_HAVE_LINKFLAGS(hdf5,,[#include <hdf5.h>],,
-              [
-  -----------------------------------------
-  Using HDF5 interface requires library
-  and header files. Skipping ...
-  Check 'config.log' for more information,
-  maybe libdirstem was determined false.
-  -----------------------------------------])
-      ], [])
+      [AC_LIB_HAVE_LINKFLAGS(hdf5,,[#include <hdf5.h>])
+       AS_VAR_IF([HAVE_LIBHDF5], [no],
+                 [AC_MSG_FAILURE([HDF5 library and/or header files are not found])])])
 AM_CONDITIONAL([HDF5], [test x"$HAVE_LIBHDF5" = xyes])