缺少动态链接库: libthrift-0.9.3.so: cannot open shared object file: No such file or directory

[root@localhost gen-cpp]# ./CppServer 

./CppServer: error while loading shared libraries: libthrift-0.9.3.so: cannot open shared object file: No such file or directory

[root@localhost gen-cpp]# ldd CppServer 

linux-vdso.so.1 =>  (0x00007ffcd4181000)

libthrift-0.9.3.so => not found

libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f7a547ef000)

libm.so.6 => /lib64/libm.so.6 (0x00007f7a544ed000)

libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f7a542d7000)

libc.so.6 => /lib64/libc.so.6 (0x00007f7a53f15000)

libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f7a53cf9000)

/lib64/ld-linux-x86-64.so.2 (0x00007f7a54b21000)

临时解决方法：

[root@localhost gen-cpp]# export LD_LIBRARY_PATH=/usr/local/lib

LD_LIBRARY_PATH: 动态库的查找路径

主要有3种方法：

方法一：用ln将需要的so文件链接到/usr/lib或者/lib这两个默认的目录下边

    ln -s /where/lib/xxx.so.x
/usr/lib/xxx.so

    sudo ldconfig

方法二：修改LD_LIBRARY_PATH

临时修改方法： export  LD_LIBRARY_PATH=LD_LIBRARY_PATH:/XXX 但是登出后就失效

彻底修改方法：  修改~/.bashrc或~/.bash_profile或系统级别的/etc/profile

    1. 在其中添加例如export PATH=
ad58
/where/lib/:$LD_LIBRARY_PATH

    2. source .bashrc  （使生效）

方法三：修改/etc/ld.so.conf，然后刷新，好处是比较不受用户的限制

    这个没有修改LD_LIBRARY_PATH但是效果是一样的实现动态库的查找， 

    1. /etc/ld.so.conf下面加一行/usr/local/mysql/lib

    2. ldconfig

参考：

http://stackoverflow.com/questions/23991830/libthrift-0-9-1-so-cannot-open-shared-object-file-no-such-file-or-directory

http://stackoverflow.com/questions/13428910/how-to-set-the-environmental-variable-ld-library-path-in-linux%22