[Boost-users] Problems linking shared library with ASIO/System/Serialization/Python

Subject: [Boost-users] Problems linking shared library with ASIO/System/Serialization/Python
From: Federico J. Fernández (federico.fernandez_at_[hidden])
Date: 2011-11-21 07:08:02

Hi All,

I'm trying to build a shared library on Linux, that will become a Python
module via Boost.Python. That library also requires functionality from
Boost.ASIO and Boost.Serialization. I'm using Boost 1.46.1, and gcc version
4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4).

I'm getting undefined errors related to Boost.System during the compilation:

g++ -L/usr/local/lib/ -shared python_client.o network_interface.o
geometry_model_api.o client.o -o python_client.so -lpython2.7
-lboost_python -lboost_serialization -lboost_thread -lQtCore -lpthread
-Wl,-no-undefined
network_interface.o: In function `get_system_category':
/usr/local/include/boost/asio/error.hpp:220: undefined reference to
`boost::system::system_category()'
/usr/local/include/boost/asio/error.hpp:220: undefined reference to
`boost::system::system_category()'
/usr/local/include/boost/asio/error.hpp:220: undefined reference to
`boost::system::system_category()'
/usr/local/include/boost/asio/error.hpp:220: undefined reference to
`boost::system::system_category()'
network_interface.o: In function `error_code':
/usr/local/include/boost/system/error_code.hpp:315: undefined reference to
`boost::system::system_category()'
network_interface.o:/usr/local/include/boost/asio/error.hpp:220: more
undefined references to `boost::system::system_category()' follow
client.o: In function `__static_initialization_and_destruction_0':
/usr/local/include/boost/system/error_code.hpp:214: undefined reference to
`boost::system::generic_category()'
/usr/local/include/boost/system/error_code.hpp:215: undefined reference to
`boost::system::generic_category()'
/usr/local/include/boost/system/error_code.hpp:216: undefined reference to
`boost::system::system_category()'
client.o: In function `get_system_category':
/usr/local/include/boost/asio/error.hpp:220: undefined reference to
`boost::system::system_category()'
client.o: In function `error_code':
/usr/local/include/boost/system/error_code.hpp:315: undefined reference to
`boost::system::system_category()'
/usr/local/include/boost/system/error_code.hpp:315: undefined reference to
`boost::system::system_category()'
/usr/local/include/boost/system/error_code.hpp:315: undefined reference to
`boost::system::system_category()'
client.o:/usr/local/include/boost/system/error_code.hpp:315: more undefined
references to `boost::system::system_category()' follow
collect2: ld returned 1 exit status

I tried defining BOOST_SYSTEM_NO_DEPRECATED, some errors disappear, others
don't.

Any advice is greatly appreciated. Thanks in advance.

--
federico