Boost.Log linking errors under GNU/Linux

Question

I would like to test the Boost.Log library. Unfortunately, I get link errors.

I use Arch Linux, and I installed Boost headers and libraries via built-in package manager pacman:

boost 1.54.0-3
boost-libs 1.54.0-2

When compiling the simple example from official site via g++ log.cpp -lboost_log -lpthread, I get the following errors:

log.cpp:(.text+0x42): undefined reference to `boost::log::v2s_mt_posix::trivial::logger::get()'
log.cpp:(.text+0x9b): undefined reference to `boost::log::v2s_mt_posix::trivial::logger::get()'
...

I've read Why my application fails to link with Boost.Log?, but I couldn't solve the link errors. It only gives me the hint that the library where boost::log::v2s_mt_posix::trivial::logger::get() is in was linked statically. But under directory /usr/lib/ there are only dynamically linked Boost libraries with extension .so.

Maybe, someone has a clue what's going wrong here.

Thank you.

possible duplicate of [linker error while linking boost log tutorial (undefined references)](http://stackoverflow.com/questions/23137637/linker-error-while-linking-boost-log-tutorial-undefined-references) — Trevor Boyd Smith, May 22 '15 at 11:14

score 16 · Accepted Answer · answered Sep 14 '13 at 19:17

16

You need to define BOOST_LOG_DYN_LINK:

g++ -DBOOST_LOG_DYN_LINK blog.cpp -lboost_log -lpthread

answered Sep 14 '13 at 19:17

Răzvan Cojocaru

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score 0 · Answer 2 · edited Oct 13 '16 at 09:59

0

If you are using cmake then:

find_package(Boost REQUIRED COMPONENTS system log)
target_link_libraries(credential ${Boost_SYSTEM_LIBRARY} ${Boost_LOG_LIBRARY})

and use:

#define BOOST_LOG_DYN_LINK 1

edited Oct 13 '16 at 09:59

cakan

2,099
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answered Oct 13 '16 at 08:34

hitesh balyan

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Boost.Log linking errors under GNU/Linux

2 Answers2

Linked