Add appropriate flag. file_system::file_string is deprecated since boost 1.46.

src/CMakeLists.txt

@@ -46,8 +46,17 @@ INSTALL(TARGETS ${LIBRARY_NAME}
   DESTINATION lib)
 
 SET(EXECUTABLE_NAME dg-python)
+
+IF (${Boost_VERSION} VERSION_GREATER "1.45")
+   MESSAGE(STATUS "Adding deprecated flag to boost")
+   ADD_DEFINITIONS(-DBOOST_FILESYSTEM_DEPRECATED)
+ENDIF()
+
+
+
 ADD_EXECUTABLE(${EXECUTABLE_NAME} dg-python.cc)
 TARGET_LINK_LIBRARIES(${EXECUTABLE_NAME}
+  ${Boost_LIBRARIES}
   ${LIBRARY_NAME}
   )
 INSTALL(TARGETS dg-python DESTINATION bin)