I have a class defined like this: class SomeObject { public: ... virtual void Method(); ... private: typedef boost::shared_ptr<AnotherObject> AnotherObjectPtr; ... std::vector<AnotherObject> m_objects; ... }; void SomeObject::Method() { ... BOOST_FOREACH(AnotherObjectPtr object, m_objects){ object->DoSomething(); } } The code compiles fine using Boost 1.39.0 on Mac OS X 10.5 (PowerPC). However, when I compile the same code on Fedora 10 (Intel), I get compile errors like: .../boost_1_39_0/boost/foreach.hpp:221: error: expected nested-name-specifier before ‘int’ .../boost_1_39_0/boost/foreach.hpp:221: error: two or more data types in declaration of ‘parameter’ .../boost_1_39_0/boost/foreach.hpp:222: error: default template arguments may not be used in function templates .../SomeObject.cpp: In member function ‘virtual void SomeObject::Method()’: .../SomeObject.cpp:110: error: no matching function for call to ‘not_(boost::is_array > >*)’ .../SomeObject.cpp:110: error: no matching function for call to ‘not_(boost::foreach::is_noncopyable > >*)’ .../SomeObject.cpp:110: error: no matching function for call to ‘not_(boost::is_array > >*)’ .../SomeObject.cpp:110: error: no matching function for call to ‘not_(boost::foreach::is_noncopyable > >*)’ .../SomeObject.cpp:110: error: no matching function for call to ‘not_(boost::is_array > >*)’ .../SomeObject.cpp:110: error: no matching function for call to ‘not_(boost::foreach::is_noncopyable > >*)’ These error are quite puzzling, and I'm not sure what is causing the problem especially since the code compiled fine on another platform, which suggests it might be fine. What is needed to fix this problem so the code will compile successfully?