I tried to raise a bug with trac, but my request was rejected as possible spam. I am currently using the 1.32.0 boost library, but would like to get away from it. One of the main features I am using is boost::serialization. There are some problems with serialization in 1.32.0, in particular that shared_ptr needs to have the "serialization" header included before the real header. The mechanim for handling serialization of shared_ptr is also a problem. Bitset support is also missing. I was hoping to pick up 1.34.0, and have since also made an attempt to use 1.34.1. However, both of these revision appear to have regressions against the 1.32.0 versions. Here is the first bug report I attempted to submit == bug 1: boost/serialization/optional doesn't include necessary headers == The following function refers to version<T>::value without an include of boost/serialization/version.hpp, resulting in user code that won't compile. It is possible to work around this problem by including boost/serialization/version.hpp before including boost/serialization/optional.hpp. I did not require a work-around with boost 1.32.0, but both 1.34.0 and 1.34.1 appear to need the work-around. {{{ template<class Archive, class T> void save( Archive & ar, const boost::optional<T> & t, const unsigned int /*version*/ ) }}} == bug 2: Archive headers missing multiple(?) include files == Here is my test program: #include <boost/archive/binary_iarchive.hpp> #include <boost/archive/binary_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/archive/xml_oarchive.hpp> int main(void) { return 0; } Here are the first few lines of gcc output: ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:72: error: ISO C++ forbids declaration of ‘scoped_ptr’ with no type ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:72: error: invalid use of ‘::’ ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:72: error: expected ‘;’ before ‘<’ token ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:73: error: ISO C++ forbids declaration of ‘basic_streambuf_locale_saver’ with no type ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:73: error: expected ‘;’ before ‘<’ token ../boost/boost/boost/archive/basic_binary_iprimitive.hpp: In member function ‘void boost::archive::boost::archive::basic_binary_iprimitive<Archive, Elem, Tr> ::load_binary(void*, size_t)’: ../boost/boost/boost/archive/basic_binary_iprimitive.hpp:150: error: ‘throw_exception’ is not a member of ‘boost::archive::boost’ It looks to my untrained eye that there could be several includes missing, or perhaps some circular including going on. == This second bug hits pretty early in my build process, so I would not be surprised if there were additional problems down the line. I am using an ubuntu 7.04 distribution, gcc 4.1.2, etc. Benjamin.