Hi, I am new to boost, just trying to use it for the first time. I have a test code which uses Boost and I am trying to get it running on my machine. But I get an error while compilation: In file included from /usr/include/boost/mpl/or.hpp:43:0, from /usr/include/boost/serialization/smart_cast.hpp:54, from /usr/include/boost/archive/detail/oserializer.hpp:41, from /usr/include/boost/archive/detail/interface_oarchive.hpp:23, from /usr/include/boost/archive/detail/common_oarchive.hpp:22, from /usr/include/boost/archive/basic_text_oarchive.hpp:32, from /usr/include/boost/archive/text_oarchive.hpp:31, from src/main.cc:1207: /usr/include/boost/mpl/aux_/include_preprocessed.hpp:37:90: fatal error: boost/mpl/aux_/preprocessed/gcc/||.hpp: No such file or directory compilation terminated. make[2]: *** [obj/debug/critpts.o] Error 1 This is the line 37 of file /usr/include/boost/mpl/aux_/include_preprocessed.hpp include BOOST_PP_STRINGIZE(boost/mpl/aux_/preprocessed/AUX778076_PREPROCESSED_HEADER) It looks like AUX778076_PREPROCESSED_HEADER is not defined correctly. Any ideas where I could go and check for this ? -- View this message in context: http://boost.2283326.n4.nabble.com/boost-includes-tp4454829p4454829.html Sent from the Boost - Users mailing list archive at Nabble.com.