list(APPEND ALL_LIBRARIES "-framework Foundation -framework ApplicationServices -framework AppKit")
endif()
+# Some systems need rt library
+if (NOT WIN32 AND NOT APPLE)
+ list(APPEND ALL_LIBRARIES rt)
+endif()
+
# Try various libdb library file extensions
if (EXISTS ${BerkeleyDB_LIBS}/libdb_cxx.a)
list(APPEND ALL_LIBRARIES ${BerkeleyDB_LIBS}/libdb_cxx.a)