使用gcc编译，产生错误如下：
/usr/bin/ld: gh_datacenter.o: undefined reference to symbol '_ZNSaIcED1Ev@@GLIBCXX_3.4' //usr/lib/x86_64-linux-gnu/libstdc++.so.6: error adding symbols: DSO missing from command line collect2: error: ld returned 1 exit status
怎么办？换成g++即可．
