解决类似/usr/lib64/libstdc++.so.6: version 'GLIBCXX_3.4.19' not found错误
运行MonaServer的时候，遇到了下面的报错：
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.19' not found (required by ./MonaServer)
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required by ./MonaServer)
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by ./../MonaBase/lib/libMonaBase.so)
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required by ./../MonaBase/lib/libMonaBase.so)
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.19' not found (required by ./../MonaBase/lib/libMonaBase.so)
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.17' not found (required by ./../MonaCore/lib/libMonaCore.so)
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.19' not found (required by ./../MonaCore/lib/libMonaCore.so)
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required by ./../MonaCore/lib/libMonaCore.so)
./MonaServer: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by ./../MonaCore/lib/libMonaCore.so)
执行： # strings /usr/lib64/libstdc++.so.6|grep GLIBCXX
得到结果：
GLIBCXX_3.4
GLIBCXX_3.4.1
GLIBCXX_3.4.2
GLIBCXX_3.4.3
GLIBCXX_3.4.4
GLIBCXX_3.4.5
GLIBCXX_3.4.6
GLIBCXX_3.4.7
GLIBCXX_3.4.8
GLIBCXX_3.4.9
GLIBCXX_3.4.10
GLIBCXX_3.4.11
GLIBCXX_3.4.12
GLIBCXX_3.4.13
GLIBCXX_FORCE_NEW
GLIBCXX_DEBUG_MESSAGE_LENGTH
到13到头了，所以报错啦。
解决方法
到编译时的目录下面找到文件：libstdc++.so.6.0.18
我编译的时候，建立build_gcc_4.8.1文件夹，具体方法参见：centos升级gcc到4.8.1
注意，进入目录是，.libs是隐藏的：/home/build_gcc_4.8.1/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
用下面的命令查看：
strings libstdc++.so.6.0.18|grep GLIBCXX
一般来讲，里面就有满足需要的GLIBCXX版本了。
然后，把该文件拷贝到了/usr/lib64下.
然后将libstdc++.so.6指向libstdc++.so.6.0.18:
[root@localhost lib64]# rm -r libstdc++.so.6
rm: remove symbolic link `libstdc++.so.6'? y
[root@localhost lib64]# ln -s libstdc++.so.6.0.18 libstdc++.so.6
这就Ok了。