Newbie question... I'm trying out Boost for the first time because I want to test drive the Boost Log library. I built this test program...
#include <boost/log/trivial.hpp>
#include <iostream>
int fibonacci(int num) {
int i;
int a = 1;
int b = 1;
for (i = 2; i <= num; ++i) {
BOOST_LOG_TRIVIAL(info) << "Iteration " << i << " (a = " << a << ", b = " << b << ")...";
b = a + b;
a = b - a;
}
return a;
}
int main() {
std::cout << "8th fibonacci number: " << fibonacci(8) << std::endl;
return 0;
}
Compile data:
**** Build of configuration Debug for project LoggingCpp ****
make all
Building file: ../main.cpp
Invoking: GCC C++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 -lpthread -MMD -MP -MF"main.d" -MT"main.d" -o"main.o" "../main.cpp"
Finished building: ../main.cpp
Building target: LoggingCpp
Invoking: GCC C++ Linker
g++ -lpthread -o"LoggingCpp" ./main.o
./main.o: In function `~basic_logger':
/usr/include/boost/log/sources/basic_logger.hpp:90: undefined reference to `boost::log_mt_posix::basic_attribute_set<char>::~basic_attribute_set()'
./main.o: In function `boost::log_mt_posix::trivial::logger::construct_logger()':
/usr/include/boost/log/trivial.hpp:102: undefined reference to `boost::log_mt_posix::trivial::aux::init()'
./main.o: In function `void boost::call_once<void (*)()>(boost::once_flag&, void (*)())':
/usr/include/boost/thread/pthread/once.hpp:51: undefined reference to `boost::detail::get_once_per_thread_epoch()'
/usr/include/boost/thread/pthread/once.hpp:55: undefined reference to `boost::detail::once_epoch_mutex'
/usr/include/boost/thread/pthread/once.hpp:66: undefined reference to `boost::detail::once_epoch_mutex'
/usr/include/boost/thread/pthread/once.hpp:77: undefined reference to `boost::detail::once_global_epoch'
/usr/include/boost/thread/pthread/once.hpp:77: undefined reference to `boost::detail::once_global_epoch'
/usr/include/boost/thread/pthread/once.hpp:77: undefined reference to `boost::detail::once_global_epoch'
/usr/include/boost/thread/pthread/once.hpp:78: undefined reference to `boost::detail::once_epoch_cv'
/usr/include/boost/thread/pthread/once.hpp:84: undefined reference to `boost::detail::once_epoch_mutex'
/usr/include/boost/thread/pthread/once.hpp:84: undefined reference to `boost::detail::once_epoch_cv'
/usr/include/boost/thread/pthread/once.hpp:88: undefined reference to `boost::detail::once_global_epoch'
/usr/include/boost/thread/pthread/once.hpp:73: undefined reference to `boost::detail::once_epoch_cv'
./main.o: In function `record_pump':
/usr/include/boost/log/sources/record_ostream.hpp:293: undefined reference to `boost::log_mt_posix::aux::stream_provider<char>::allocate_compound(boost::log_mt_posix::basic_record<char> const&)'
./main.o: In function `~auto_release':
/usr/include/boost/log/sources/record_ostream.hpp:280: undefined reference to `boost::log_mt_posix::aux::stream_provider<char>::release_compound(boost::log_mt_posix::aux::stream_provider<char>::stream_compound*)'
./main.o: In function `boost::log_mt_posix::sources::aux::logger_singleton<boost::log_mt_posix::trivial::logger>::init_instance开发者_如何学运维()':
/usr/include/boost/log/sources/global_logger_storage.hpp:126: undefined reference to `boost::log_mt_posix::sources::aux::global_storage<char>::get_or_init(std::type_info const&, boost::function0<boost::shared_ptr<boost::log_mt_posix::sources::aux::logger_holder_base> > const&)'
/usr/include/boost/log/sources/global_logger_storage.hpp:147: undefined reference to `boost::log_mt_posix::odr_violation::throw_(char const*, unsigned long, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
./main.o: In function `boost::log_mt_posix::sources::aux::severity_level<boost::log_mt_posix::trivial::severity_level>::set_value(boost::log_mt_posix::trivial::severity_level)':
/usr/include/boost/log/sources/severity_feature.hpp:95: undefined reference to `boost::log_mt_posix::sources::aux::set_severity_level(int)'
./main.o: In function `boost::log_mt_posix::basic_record<char> boost::log_mt_posix::sources::basic_logger<char, boost::log_mt_posix::sources::severity_logger_mt<boost::log_mt_posix::trivial::severity_level>, boost::log_mt_posix::sources::multi_thread_model<boost::log_mt_posix::aux::light_rw_mutex> >::open_record_unlocked<boost::parameter::aux::tagged_argument<boost::log_mt_posix::keywords::tag::severity, boost::log_mt_posix::trivial::severity_level const> >(boost::parameter::aux::tagged_argument<boost::log_mt_posix::keywords::tag::severity, boost::log_mt_posix::trivial::severity_level const> const&)':
/usr/include/boost/log/sources/basic_logger.hpp:269: undefined reference to `boost::log_mt_posix::basic_core<char>::open_record(boost::log_mt_posix::basic_attribute_set<char> const&)'
./main.o: In function `boost::log_mt_posix::sources::basic_logger<char, boost::log_mt_posix::sources::severity_logger_mt<boost::log_mt_posix::trivial::severity_level>, boost::log_mt_posix::sources::multi_thread_model<boost::log_mt_posix::aux::light_rw_mutex> >::push_record_unlocked(boost::log_mt_posix::basic_record<char> const&)':
/usr/include/boost/log/sources/basic_logger.hpp:280: undefined reference to `boost::log_mt_posix::basic_core<char>::push_record(boost::log_mt_posix::basic_record<char> const&)'
./main.o: In function `basic_logger<boost::parameter::aux::tagged_argument<boost::log_mt_posix::keywords::tag::severity, const boost::log_mt_posix::trivial::severity_level> >':
/usr/include/boost/log/sources/basic_logger.hpp:145: undefined reference to `boost::log_mt_posix::basic_core<char>::get()'
/usr/include/boost/log/sources/basic_logger.hpp:145: undefined reference to `boost::log_mt_posix::basic_attribute_set<char>::basic_attribute_set()'
./main.o: In function `~pair':
/usr/include/c++/4.5/bits/stl_pair.h:72: undefined reference to `boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> >::~basic_slim_string()'
/usr/include/c++/4.5/bits/stl_pair.h:72: undefined reference to `boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> >::~basic_slim_string()'
./main.o: In function `basic_logger':
/usr/include/boost/log/sources/basic_logger.hpp:135: undefined reference to `boost::log_mt_posix::basic_core<char>::get()'
/usr/include/boost/log/sources/basic_logger.hpp:135: undefined reference to `boost::log_mt_posix::basic_attribute_set<char>::basic_attribute_set(boost::log_mt_posix::basic_attribute_set<char> const&)'
./main.o: In function `boost::log_mt_posix::basic_attribute_set<char>::reference_proxy::operator=(boost::shared_ptr<boost::log_mt_posix::attribute> const&) const':
/usr/include/boost/log/attributes/attribute_set.hpp:121: undefined reference to `boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> >::basic_slim_string(char const*, unsigned long)'
/usr/include/boost/log/attributes/attribute_set.hpp:121: undefined reference to `boost::log_mt_posix::basic_attribute_set<char>::insert(boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> > const&, boost::shared_ptr<boost::log_mt_posix::attribute> const&)'
/usr/include/boost/log/attributes/attribute_set.hpp:121: undefined reference to `boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> >::~basic_slim_string()'
/usr/include/boost/log/attributes/attribute_set.hpp:121: undefined reference to `boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> >::~basic_slim_string()'
./main.o: In function `pair<std::basic_string<char>, boost::shared_ptr<boost::log_mt_posix::attribute> >':
/usr/include/c++/4.5/bits/stl_pair.h:116: undefined reference to `boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> >::basic_slim_string(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
./main.o: In function `boost::log_mt_posix::basic_attribute_set<char>::insert(std::pair<boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> > const, boost::shared_ptr<boost::log_mt_posix::attribute> > const&)':
/usr/include/boost/log/attributes/attribute_set.hpp:507: undefined reference to `boost::log_mt_posix::basic_attribute_set<char>::insert(boost::log_mt_posix::basic_slim_string<char, std::char_traits<char> > const&, boost::shared_ptr<boost::log_mt_posix::attribute> const&)'
./main.o: In function `boost::log_mt_posix::sources::aux::severity_level<boost::log_mt_posix::trivial::severity_level>::dispatch(boost::log_mt_posix::type_dispatcher&)':
/usr/include/boost/log/sources/severity_feature.hpp:105: undefined reference to `boost::log_mt_posix::sources::aux::get_severity_level()'
./main.o: In function `boost::log_mt_posix::sources::aux::severity_level<boost::log_mt_posix::trivial::severity_level>::detach_from_thread()':
/usr/include/boost/log/sources/severity_feature.hpp:118: undefined reference to `boost::log_mt_posix::sources::aux::get_severity_level()'
collect2: ld returned 1 exit status
make: *** [LoggingCpp] Error 1
About Boost Log syntax
Did I install Boost Log incorrectly? Am I missing crucial libraries? Did I omit necessary linker flags?
You need to add something like -lboost-log-mt
to your link line.
It looks like you haven't built log?
Once you've copied the log header files, etc into the corresponding folders in your boost distro (keep the same structure i.e. merge the headers to the headers, the libs folder into the libs folder of your boost distro, etc), you still need to build boost and then like John mentioned, link against it. That's why the link you referred to above points you to the standard boost build instructions.
It's a while ago, but AFAIR on linux you simply run ./bjam
in the root of your boost folder.
Maybe switch unright version of the boost_log.
I have the same issue for undefined reference to "boost::log::v2_mt_posix::core::push_record_move(boost::log::v2_mt_posix::record&)"
I build the libboost_log by myself. And I use the nm to grep the push_record_move found that, "boost::log::v2s_mt_posix::core::push_record_move(boost::log::v2s_mt_posix::record&)"
From the experience of before, should add some cflag in the Makefile.
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