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I am trying to make an iPhone app that uses OpenCV plus another C++ Library. It seems to compile and link fine. It actually works. Is just I want to get rid of this ugly warning: ld: warning: std::vector<int, std::allocator<int> >::_M_insert_aux(__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > >, int const&)has different visibility (default) in /Users/nacho4d/Documents/Projects/iOS/iAR/opencv_device/lib/libcxcore.a(cxdatastructs.o) and (hidden) in /Users/nacho4d/Documents/Projects/iOS/iAR/build/iAR.build/Debug-iphoneos/iAR.build/Objects-normal/armv6/combination.o What does it mean?, How can I solve it? just in case, this is the header of combination class, from the library I mentioned. //combination.h typedef std::vector<int> combi; typedef std::vector< combi > allcombi; class Combination { public: void Init(const int n, const int m); allcombi::iterator begin(); allcombi::iterator end(); allcombi::const_iterator begin() const; allcombi::const_iterator end() const; private: void Nest(int nest, int column, int n1, int n2, int k[], allcombi &result); private: allcombi m_data; }; Thanks in advance Ignacio

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