Berkeleydb linux 编译问题
日志：
操作系统：centOS 6.4
gcc: 4.4.7
编译成功，make时出现：gcc libstdc++.a: could not read symbols: Bad value
解决方法：
加入参数：--with-expat=builtin
../dist/configure -enable-lib64 -libdir=/usr/lib64 --prefix=/usr/local/berkeleydb --with-expat=builtin --enable-cxx
