[CMake] add HDF5 as target_include_dir for buildblock

Author: KrisThielemans

src/buildblock/CMakeLists.txt

@@ -135,9 +135,9 @@ if (LLN_FOUND)
   target_link_libraries(buildblock PUBLIC ${LLN_LIBRARIES})
 endif()
 
-if (RDF_FOUND)
-  # TODO cannot do this as it creates circular dependencies
-  # target_link_libraries(buildblock PUBLIC local_IO_GE)
+# TODO Remove but currently needed for ProjDataGEHDF5
+if (HAVE_HDF5)
+  target_include_directories(buildblock PUBLIC ${HDF5_INCLUDE_DIRS})
 endif()
 
 # TODO currently needed as filters need fourier