diff --color --unified --recursive --text src.old/xdmf/core/CMakeLists.txt src/xdmf/core/CMakeLists.txt
--- src.old/xdmf/core/CMakeLists.txt	2022-01-10 23:22:52.940028728 +0100
+++ src/xdmf/core/CMakeLists.txt	2022-01-10 23:55:29.950022745 +0100
@@ -29,6 +29,9 @@
 if(HDF5_FOUND)
   include_directories(${HDF5_INCLUDE_DIRS})
   include_directories(${HDF5_C_INCLUDE_DIR})
+  if(HDF5_VERSION VERSION_GREATER "1.12.0")
+      set(XDMF_HID_T_64 TRUE)
+  endif()
   # FIXME: Would like to get this info from HDF5 so we don't have conflicting
   # MPI versions
   if(HDF5_IS_PARALLEL)
diff --color --unified --recursive --text src.old/xdmf/core/XdmfCoreConfig.hpp.in src/xdmf/core/XdmfCoreConfig.hpp.in
--- src.old/xdmf/core/XdmfCoreConfig.hpp.in	2022-01-10 23:22:52.940028728 +0100
+++ src/xdmf/core/XdmfCoreConfig.hpp.in	2022-01-10 23:56:44.850022516 +0100
@@ -29,9 +29,10 @@
 
 #cmakedefine BUILD_SHARED
 #ifndef BUILD_SHARED
-#  define XDMFSTATIC
+#define XDMFSTATIC
 #endif
 
 #cmakedefine XDMF_NO_REALPATH
+#cmakedefine XDMF_HID_T_64
 
 #endif /* XDMFCORECONFIG_HPP_ */
diff --color --unified --recursive --text src.old/xdmf/core/XdmfHDF5Controller.hpp src/xdmf/core/XdmfHDF5Controller.hpp
--- src.old/xdmf/core/XdmfHDF5Controller.hpp	2022-01-10 23:22:52.940028728 +0100
+++ src/xdmf/core/XdmfHDF5Controller.hpp	2022-01-10 23:55:29.950022745 +0100
@@ -33,7 +33,11 @@
 #ifndef _H5Ipublic_H
   #ifndef XDMF_HID_T
   #define XDMF_HID_T
-    typedef int hid_t;
+    #ifndef XDMF_HID_T_64
+      typedef int hid_t;
+    #else
+      typedef int64_t hid_t;
+    #endif
   #endif
 #endif
 
diff --color --unified --recursive --text src.old/xdmf/core/XdmfHDF5Writer.hpp src/xdmf/core/XdmfHDF5Writer.hpp
--- src.old/xdmf/core/XdmfHDF5Writer.hpp	2022-01-10 23:22:52.950028728 +0100
+++ src/xdmf/core/XdmfHDF5Writer.hpp	2022-01-10 23:55:29.950022745 +0100
@@ -34,7 +34,11 @@
 #ifndef _H5Ipublic_H
   #ifndef XDMF_HID_T
   #define XDMF_HID_T
-    typedef int hid_t;
+    #ifndef XDMF_HID_T_64
+      typedef int hid_t;
+    #else
+      typedef int64_t hid_t;
+    #endif
   #endif
 #endif