HDFFV-10980 - h5diff uses new ref APIs

tools/lib/CMakeLists.txt

@@ -39,6 +39,7 @@ if (NOT ONLY_SHARED_LIBS)
       INTERFACE "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/include>"
   )
   #target_compile_definitions(${HDF5_TOOLS_LIB_TARGET} PRIVATE H5_TOOLS_DEBUG)
+  #target_compile_definitions(${HDF5_TOOLS_LIB_TARGET} PRIVATE H5DIFF_DEBUG)
   TARGET_C_PROPERTIES (${HDF5_TOOLS_LIB_TARGET} STATIC)
   target_link_libraries (${HDF5_TOOLS_LIB_TARGET}
       PUBLIC ${HDF5_LIB_TARGET}
@@ -59,6 +60,7 @@ if (BUILD_SHARED_LIBS)
   target_compile_definitions(${HDF5_TOOLS_LIBSH_TARGET}
       PUBLIC "H5_BUILT_AS_DYNAMIC_LIB"
       #PRIVATE H5_TOOLS_DEBUG
+      #PRIVATE H5DIFF_DEBUG
   )
   TARGET_C_PROPERTIES (${HDF5_TOOLS_LIBSH_TARGET} SHARED)
   target_link_libraries (${HDF5_TOOLS_LIBSH_TARGET}