avoid needing to include hdf5 in public header files (bug #44370, #43180) * oct-hdf5-id.cc, oct-hdf5-id.h: New files. * libinterp/corefcn/module.mk: Update. * libgui/src/module.mk (src_libgui_src_la_CPPFLAGS): Remove $(HDF5_CPPFLAGS) from the list. * load-save.h (enum load_save_format_type): Always include LS_HDF5 in the list of values. * ls-hdf5.cc (read_hdf5_data, save_hdf5_data): Call check_hdf5_id_type. * oct-hdf5.h: Also #define HDF5_SAVE_TYPE. * ov.h, ov-base.h: Include oct-hdf5-id.h instead of oct-hdf5.h. Always declare load_hdf5 and save_hdf5 functions. * ov-base-int.cc, ov-base-int.h, ov-base.cc, ov-bool-mat.cc, ov-bool-mat.h, ov-bool-sparse.cc, ov-bool-sparse.h, ov-bool.cc, ov-bool.h, ov-cell.cc, ov-cell.h, ov-class.cc, ov-class.h, ov-complex.cc, ov-complex.h, ov-cx-mat.cc, ov-cx-mat.h, ov-cx-sparse.cc, ov-cx-sparse.h, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn-inline.cc, ov-fcn-inline.h, ov-float.cc, ov-float.h, ov-flt-complex.cc, ov-flt-complex.h, ov-flt-cx-mat.cc, ov-flt-cx-mat.h, ov-flt-re-mat.cc, ov-flt-re-mat.h, ov-int16.cc, ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-lazy-idx.h, ov-oncleanup.cc, ov-oncleanup.h, ov-range.cc ov-range.h, ov-re-mat.cc, ov-re-mat.h, ov-re-sparse.cc, ov-re-sparse.h, ov-scalar.cc, ov-scalar.h, ov-str-mat.cc, ov-str-mat.h, ov-struct.cc, ov-struct.h, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc: Move #ifdef HAVE_HDF5 inside load_hdf5 and save_hdf5 functions. Always declare and define load_hdf5 and save_hdf5 functions.

--- a/libinterp/corefcn/ls-hdf5.cc	Wed Feb 25 12:42:12 2015 -0800
+++ b/libinterp/corefcn/ls-hdf5.cc	Thu Feb 26 10:49:20 2015 -0500
@@ -55,6 +55,7 @@
 #include "error.h"
 #include "gripes.h"
 #include "load-save.h"
+#include "oct-hdf5-id.h"
 #include "oct-obj.h"
 #include "oct-map.h"
 #include "ov-cell.h"
@@ -587,6 +588,8 @@
                 bool& global, octave_value& tc, std::string& doc,
                 const string_vector& argv, int argv_idx, int argc)
 {
+  check_hdf5_id_type ();
+
   std::string retval;
 
   doc.resize (0);
@@ -952,6 +955,8 @@
                 const std::string& name, const std::string& doc,
                 bool mark_as_global, bool save_as_floats)
 {
+  check_hdf5_id_type ();
+
   hdf5_ofstream& hs = dynamic_cast<hdf5_ofstream&> (os);
 
   return add_hdf5_data (hs.file_id, tc, name, doc,