undefined reference to boost::program_options::options_description::m_default_line_length
问题最终解决依靠的是如下的问题：
Visual Studio 2015： 版本boost_1_61_0有问题，重新利用Visual C++ 2015 x64编译也没用；
更新版本为boost_1_65_1后，利用x64编译则没问题 。
参考的解决方案说明如下：
There were changes
to the <string> class
in the C++11 standard which may conflict with versions of the Boost library that were compiled with a non-C++11 compiler (such as G++-4.8). Try recompiling boost or using a version of C++ compiler that was used to compile your Boost libraries
http://www.boost.org/官网上对新版本的描述如下：
We aim to establish "existing practice" and provide reference
implementations so that Boost libraries are suitable for eventual standardization. Ten Boost libraries are included in the C++
Standards Committee's Library Technical Report (TR1)
and in the new C++11 Standard. C++11 also includes several more Boost libraries in addition to those from TR1. More Boost libraries are proposed for standardization in C++17.
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张朋艺 pyZhangBIT2010@126.com
2017-12-08