cope with xtensor include files move (#174)

* cope with xtensor include files move

* make sure XTENSOR version info is available

Author: KrisThielemans

cpp/helpers/include/petsird_helpers/geometry.h

@@ -6,9 +6,19 @@
 #ifndef __petsird_helpers_geometry_h__
 #define __petsird_helpers_geometry_h__
 
-#include <xtensor/xarray.hpp>
-#include <xtensor/xview.hpp>
-#include <xtensor/xio.hpp>
+#ifndef XTENSOR_VERSION_MAJOR
+#  include <xtensor/xtensor.hpp>
+#endif
+
+#if XTENSOR_VERSION_MAJOR == 0 && XTENSOR_VERSION_MINOR < 26
+#  include <xtensor/xarray.hpp>
+#  include <xtensor/xview.hpp>
+#  include <xtensor/xio.hpp>
+#else
+#  include <xtensor/containers/xarray.hpp>
+#  include <xtensor/views/xview.hpp>
+#  include <xtensor/io/xio.hpp>
+#endif
 #include <xtensor-blas/xlinalg.hpp>
 #include <vector>
 #include "petsird/types.h"

cpp/helpers/petsird_analysis.cpp

@@ -17,8 +17,13 @@ using petsird::binary::PETSIRDReader;
 #endif
 #include "petsird_helpers.h"
 #include "petsird_helpers/geometry.h"
-#include <xtensor/xview.hpp>
-#include <xtensor/xio.hpp>
+#if XTENSOR_VERSION_MAJOR == 0 && XTENSOR_VERSION_MINOR < 26
+#  include <xtensor/xview.hpp>
+#  include <xtensor/xio.hpp>
+#else
+#  include <xtensor/views/xview.hpp>
+#  include <xtensor/io/xio.hpp>
+#endif
 #include <iostream>
 #include <variant>
 #include <cstdlib>