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I encountered a problem in using boost library.
When I build a sample code via g++, the link failed with the output 'ld: symbol(s) not found for architecture x86_64'

The things I tried to solve the problem are as follows.

  • build boost with './b2 install address-model=64'
  • copy libraries to stage './b2 install stage'
  • copy libraries in 'stage/lib' to '/usr/lib'
    • Now there's a library named '/usr/lib/libboost_log.a'.
  • compile sample code with 'g++ sample.cpp -I /User/boost_1_57_0 -lboost_log'
    • // sample.cpp
#include <boost/log/trivial.hpp>
int main () {
    BOOST_LOG_TRIVIAL(trace) << "A trace severity message";
    return 0;
}

    I'd appreciate some help.

    The full error message I got from is

    Undefined symbols for architecture x86_64:
"boost::log::v2s_mt_posix::record_view::public_data::destroy(boost::log::v2s_mt_posix::record_view::public_data const*)", referenced from:
      boost::log::v2s_mt_posix::record::reset() in log.o
  "boost::log::v2s_mt_posix::aux::stream_provider<char>::release_compound(boost::log::v2s_mt_posix::aux::stream_provider<char>::stream_compound*)", referenced from:
      boost::log::v2s_mt_posix::aux::record_pump<boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level> >::auto_release::~auto_release() in log.o
  "boost::log::v2s_mt_posix::aux::stream_provider<char>::allocate_compound(boost::log::v2s_mt_posix::record&)", referenced from:
      boost::log::v2s_mt_posix::aux::record_pump<boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level> >::record_pump(boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level>&, boost::log::v2s_mt_posix::record&) in log.o
  "boost::log::v2s_mt_posix::aux::unhandled_exception_count()", referenced from:
      boost::log::v2s_mt_posix::aux::record_pump<boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level> >::~record_pump() in log.o
      boost::log::v2s_mt_posix::aux::record_pump<boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level> >::record_pump(boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level>&, boost::log::v2s_mt_posix::record&) in log.o
  "boost::log::v2s_mt_posix::core::open_record(boost::log::v2s_mt_posix::attribute_set const&)", referenced from:
      boost::log::v2s_mt_posix::record boost::log::v2s_mt_posix::sources::basic_logger<char, boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level>, boost::log::v2s_mt_posix::sources::multi_thread_model<boost::log::v2s_mt_posix::aux::light_rw_mutex> >::open_record_unlocked<boost::parameter::aux::tagged_argument<boost::log::v2s_mt_posix::keywords::tag::severity, boost::log::v2s_mt_posix::trivial::severity_level const> >(boost::parameter::aux::tagged_argument<boost::log::v2s_mt_posix::keywords::tag::severity, boost::log::v2s_mt_posix::trivial::severity_level const> const&) in log.o
  "boost::log::v2s_mt_posix::core::push_record_move(boost::log::v2s_mt_posix::record&)", referenced from:
      boost::log::v2s_mt_posix::sources::basic_logger<char, boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level>, boost::log::v2s_mt_posix::sources::multi_thread_model<boost::log::v2s_mt_posix::aux::light_rw_mutex> >::push_record_unlocked(boost::rv<boost::log::v2s_mt_posix::record>&) in log.o
  "boost::log::v2s_mt_posix::sources::aux::get_severity_level()", referenced from:
      boost::log::v2s_mt_posix::sources::aux::severity_level<boost::log::v2s_mt_posix::trivial::severity_level>::set_value(boost::log::v2s_mt_posix::trivial::severity_level) in log.o
  "boost::log::v2s_mt_posix::trivial::logger::get()", referenced from:
      _main in log.o
  "boost::log::v2s_mt_posix::core::get_logging_enabled() const", referenced from:
      boost::log::v2s_mt_posix::record boost::log::v2s_mt_posix::sources::basic_composite_logger<char, boost::log::v2s_mt_posix::sources::severity_logger_mt<boost::log::v2s_mt_posix::trivial::severity_level>, boost::log::v2s_mt_posix::sources::multi_thread_model<boost::log::v2s_mt_posix::aux::light_rw_mutex>, boost::log::v2s_mt_posix::sources::features<boost::log::v2s_mt_posix::sources::severity<boost::log::v2s_mt_posix::trivial::severity_level>, void, void, void, void, void, void, void, void, void> >::open_record<boost::parameter::aux::tagged_argument<boost::log::v2s_mt_posix::keywords::tag::severity, boost::log::v2s_mt_posix::trivial::severity_level const> >(boost::parameter::aux::tagged_argument<boost::log::v2s_mt_posix::keywords::tag::severity, boost::log::v2s_mt_posix::trivial::severity_level const> const&) in log.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

    I resolved the problem by defining -DBOOST_LOG_DYN_LINK in compile option.
    Thank you for all your help.

    jwchoi
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    • Due to the restriction to the length of comment, I posted some more error message here. Undefined symbols for architecture x86_64: "boost::log::v2s_mt_posix::record_view::public_data::destroy(boost::log::v2s_mt_posix::record_view::public_data const*)", referenced from: boost::log::v2s_mt_posix::record::reset() in log.o "boost::log::v2s_mt_posix::aux::stream_provider::release_compo:.....ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) – jwchoi Nov 30 '14 at 14:26
    • The issue might be related to the version "v2s_mt_posix" while your .so may be using "v2_mt_posix" (you can check with `nm -CD /path/to/libboost_log.so`). – Marc Glisse Nov 30 '14 at 14:35
    • I edited my question with the full error message. – jwchoi Nov 30 '14 at 15:03
    • http://www.boost.org/doc/libs/1_57_0/libs/log/doc/html/log/rationale/namespace_mangling.html (IMHO a bad design) – Marc Glisse Nov 30 '14 at 15:36

    1 Answers1

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    Use -L to specify library path:

     -L /User/boost_1_57_0/stage/lib # or anything else
    erenon
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    • I already tried it. However the result was same as well. I just copied libraries under '/User/boost_1_57_0/stage/lib/*' to '/user/lib' to skip specifying '-L' option. – jwchoi Nov 30 '14 at 13:25