your post is missing basic information.
please fix that.
here's my guess (relevant part highlighted):
Quote:
[ 62%] Linking CXX executable connectivity_tool
/usr/bin/ld: StreamTools.cpp.o: plugin needed to handle lto object
/tmp/ccMVKfl6.ltrans1.ltrans.o: In function `std::_Function_handler<void (), handle_request_stat(boost::program_options::variables_map&, unsigned long)::{lambda()#4}>::_M_invoke(std::_Any_data const&) [clone .lto_priv.448]':
<artificial>:(.text+0xcd3): undefined reference to `Common::write(Common::IOutputStream&, void const*, unsigned long)'
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