链接器错误：Boost.Chrono Boost.Timer

我想获得一个简单的例子与Boost.Timer一起工作的一些秒表性能指标，我无法弄清楚为什么我无法成功链接Boost定时进入Boost.Chrono。我使用以下简单脚本构建了源代码提升链接器错误：Boost.Chrono Boost.Timer

.\b2 --clean 
CALL bootstrap 
.\b2 --build-type=complete address-model=64

但是仍然收到链接器错误。

70>libboost_timer-vc100-mt-1_49.lib(cpu_timer.obj) : error LNK2001: unresolved external symbol "public: static class boost::chrono::time_point<class boost::chrono::steady_clock,class boost::chrono::duration<__int64,class boost::ratio<1,1000000000> > > __cdecl boost::chrono::steady_clock::now(void)" ([email protected][email protected]@[email protected]@[email protected][email protected]@[email protected]@[email protected][email protected][email protected]@[email protected]@@[email protected]@[email protected])

是否有必要实际上包括--with-chrono标志使用Timer类？找不到与定时器documentation相关的任何内容，尽管线程documentation似乎更多地提到了我从这个question引出的更多内容，这表明了链接修复的顺序。

这有点令人困惑，因为我看到通过项目设置Linker->General->Additional Library Directories构建并准备好链接到Visual Studio中的程序集。我认为Boost的设计在处理这些特定的库方面并不明显。任何人都可以评论这个吗？与--with-chrono/USES_CHRONO宏有什么关系，它似乎没有阻止构建库，所以它是否有条件地编译出一些代码，特别是time_point类？

我想根据表30.1。线程文档中〜用于配置功能”即USES_CHRONO是肯定的默认缺省值，因此我应该启用这些功能吧？

C:\...\boost_binaries\msvc10_x64>dir /b | findstr /i chrono 
boost_chrono-vc100-mt-1_49.dll 
boost_chrono-vc100-mt-1_49.lib 
boost_chrono-vc100-mt-gd-1_49.dll 
boost_chrono-vc100-mt-gd-1_49.lib 
libboost_chrono-vc100-mt-1_49.lib 
libboost_chrono-vc100-mt-gd-1_49.lib 
libboost_chrono-vc100-mt-s-1_49.lib 
libboost_chrono-vc100-mt-sgd-1_49.lib 
libboost_chrono-vc100-s-1_49.lib 
libboost_chrono-vc100-sgd-1_49.lib 

C:\...\boost_binaries\msvc10_x64>dir /b | findstr /i timer 
boost_timer-vc100-mt-1_49.dll 
boost_timer-vc100-mt-1_49.lib 
boost_timer-vc100-mt-gd-1_49.dll 
boost_timer-vc100-mt-gd-1_49.lib 
libboost_timer-vc100-mt-1_49.lib 
libboost_timer-vc100-mt-gd-1_49.lib 
libboost_timer-vc100-mt-s-1_49.lib 
libboost_timer-vc100-mt-sgd-1_49.lib 
libboost_timer-vc100-s-1_49.lib 
libboost_timer-vc100-sgd-1_49.lib 

C:\...\boost_binaries\msvc10_x64>dir /b | findstr /i _system 
boost_system-vc100-mt-1_49.dll 
boost_system-vc100-mt-1_49.lib 
boost_system-vc100-mt-gd-1_49.dll 
boost_system-vc100-mt-gd-1_49.lib 
libboost_system-vc100-mt-1_49.lib 
libboost_system-vc100-mt-gd-1_49.lib 
libboost_system-vc100-mt-s-1_49.lib 
libboost_system-vc100-mt-sgd-1_49.lib 
libboost_system-vc100-s-1_49.lib 
libboost_system-vc100-sgd-1_49.lib

来源

2015-11-19 jxramos