[mlpack] gym tcp api compilation error log

[Adithya Praveen]

Hey, This is the compilation error log i get when compiling example.cpp.
/tmp/ccVAcs6p.o: In function `__static_initialization_and_destruction_0(int, int)':example.cpp:(.text+0x4562): undefined reference to `boost::system::generic_category()'example.cpp:(.text+0x456e): undefined reference to `boost::system::generic_category()'example.cpp:(.text+0x457a): undefined reference to `boost::system::system_category()'/tmp/ccVAcs6p.o: In function `boost::system::error_code::error_code()':example.cpp:(.text._ZN5boost6system10error_codeC2Ev[_ZN5boost6system10error_codeC5Ev]+0x17): undefined reference to `boost::system::system_category()'/tmp/ccVAcs6p.o: In function `boost::system::error_category::std_category::equivalent(int, std::error_condition const&) const':example.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition[_ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition]+0xb8): undefined reference to `boost::system::generic_category()'example.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition[_ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition]+0xf3): undefined reference to `boost::system::generic_category()'/tmp/ccVAcs6p.o: In function `boost::system::error_category::std_category::equivalent(std::error_code const&, int) const':example.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0xb8): undefined reference to `boost::system::generic_category()'example.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0xf3): undefined reference to `boost::system::generic_category()'example.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0x1d2): undefined reference to `boost::system::generic_category()'/tmp/ccVAcs6p.o: In function `boost::asio::error::get_system_category()':example.cpp:(.text._ZN5boost4asio5error19get_system_categoryEv[_ZN5boost4asio5error19get_system_categoryEv]+0x5): undefined reference to `boost::system::system_category()'/tmp/ccVAcs6p.o: In function `boost::asio::detail::posix_thread::~posix_thread()':example.cpp:(.text._ZN5boost4asio6detail12posix_threadD2Ev[_ZN5boost4asio6detail12posix_threadD5Ev]+0x26): undefined reference to `pthread_detach'/tmp/ccVAcs6p.o: In function `boost::asio::detail::posix_thread::join()':example.cpp:(.text._ZN5boost4asio6detail12posix_thread4joinEv[_ZN5boost4asio6detail12posix_thread4joinEv]+0x2b): undefined reference to `pthread_join'/tmp/ccVAcs6p.o: In function `boost::asio::detail::posix_thread::start_thread(boost::asio::detail::posix_thread::func_base*)':example.cpp:(.text._ZN5boost4asio6detail12posix_thread12start_threadEPNS2_9func_baseE[_ZN5boost4asio6detail12posix_thread12start_threadEPNS2_9func_baseE]+0x3a): undefined reference to `pthread_create'/tmp/ccVAcs6p.o: In function `boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >::zlib_decompressor_impl(int)':example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC5Ei]+0x27): undefined reference to `boost::iostreams::detail::zlib_base::zlib_base()'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC5Ei]+0x39): undefined reference to `boost::iostreams::zlib::default_strategy'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC5Ei]+0x3f): undefined reference to `boost::iostreams::zlib::deflated'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC5Ei]+0x45): undefined reference to `boost::iostreams::zlib::default_compression'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC5Ei]+0xa6): undefined reference to `boost::iostreams::detail::zlib_base::~zlib_base()'/tmp/ccVAcs6p.o: In function `boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >::~zlib_decompressor_impl()':example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEED2Ev[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEED5Ev]+0x1e): undefined reference to `boost::iostreams::detail::zlib_base::reset(bool, bool)'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEED2Ev[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEED5Ev]+0x36): undefined reference to `boost::iostreams::detail::zlib_base::~zlib_base()'/tmp/ccVAcs6p.o: In function `void boost::iostreams::detail::zlib_base::init<std::allocator<char> >(boost::iostreams::zlib_params const&, bool, boost::iostreams::detail::zlib_allocator<std::allocator<char>, boost::iostreams::detail::zlib_allocator_traits<std::allocator<char> >::type>&)':example.cpp:(.text._ZN5boost9iostreams6detail9zlib_base4initISaIcEEEvRKNS0_11zlib_paramsEbRNS1_14zlib_allocatorIT_NS1_21zlib_allocator_traitsIS9_E4typeEEE[_ZN5boost9iostreams6detail9zlib_base4initISaIcEEEvRKNS0_11zlib_paramsEbRNS1_14zlib_allocatorIT_NS1_21zlib_allocator_traitsIS9_E4typeEEE]+0x5f): undefined reference to `boost::iostreams::detail::zlib_base::do_init(boost::iostreams::zlib_params const&, bool, void* (*)(void*, unsigned int, unsigned int), void (*)(void*, void*), void*)'/tmp/ccVAcs6p.o: In function `boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >::filter(char const*&, char const*, char*&, char*, bool)':example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b]+0x3d): undefined reference to `boost::iostreams::detail::zlib_base::before(char const*&, char const*, char*&, char*)'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b]+0x47): undefined reference to `boost::iostreams::zlib::sync_flush'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b]+0x51): undefined reference to `boost::iostreams::detail::zlib_base::xinflate(int)'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b]+0x6d): undefined reference to `boost::iostreams::detail::zlib_base::after(char const*&, char*&, bool)'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b]+0x77): undefined reference to `boost::iostreams::zlib_error::check(int)'example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b]+0x7d): undefined reference to `boost::iostreams::zlib::stream_end'/tmp/ccVAcs6p.o: In function `boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >::close()':example.cpp:(.text._ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE5closeEv[_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE5closeEv]+0x26): undefined reference to `boost::iostreams::detail::zlib_base::reset(bool, bool)'collect2: error: ld returned 1 exit status

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