Cent0S 6.7 i686编译gcc-7.1.0的问题，求解？

[CalvinLu]

还有人在吗？我又遇到了一个问题！！！！
我今天在编译gcc-7.1.0源码的时候，我configure是这样写的：

./configure --prefix=/usr/local/gcc-7.1.0 \
--with-gmp=/usr/local/gmp-4.3.2 \
--with-gmp=/usr/local/mpfr-2.4.2 \
--with-gmp=/usr/local/mpc-1.0.3 \

~/.bash_profile配置文件，贴出一部分
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C_INCLUDE_PATH=/usr/local/gmp-4.3.2/include/:$C_INCLUDE_PATH    
C_INCLUDE_PATH=/usr/local/mpfr-2.4.2/include/:$C_INCLUDE_PATH    
C_INCLUDE_PATH=/usr/local/mpc-1.0.3/include/:$C_INCLUDE_PATH    
export C_INCLUDE_PATH

LIBRARY_PATH=/usr/local/gmp-4.3.2/lib/:$LIBRARY_PATH
LIBRARY_PATH=/usr/local/mpfr-2.4.2/lib/:$LIBRARY_PATH
LIBRARY_PATH=/usr/local/mpc-1.0.3/lib/:$LIBRARY_PATH
export LIBRARY_PATH

LD_LIBRARY_PATH=/usr/local/gmp-4.3.2/lib/:$LD_LIBRARY_PATH
LD_LIBRARY_PATH=/usr/local/mpfr-2.4.2/lib/:$LD_LIBRARY_PATH
LD_LIBRARY_PATH=/usr/local/mpc-1.0.3/lib/:$LD_LIBRARY_PATH
export LD_LIBRARY_PATH

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然后我使用source ~/.bash_profile命令使得该配置文件生效
但是当我make的时候，结果出现这样的错误

/usr/local/src/gcc-7.1.0/host-i686-pc-linux-gnu/gcc/cc1: error while loading shared libraries: libmpc.so.3: cannot open shared object file: No such file or directory

我知道他的意思就是：找不到libmpc.so.3这个动态库，但是我进入/usr/loca/gmp-1.0.3这个目录的时候，我是可以看到这动态库的：

[lujiawen@ljwServer lib]$ ls
libmpc.a  libmpc.la  libmpc.so  libmpc.so.3  libmpc.so.3.0.0
[lujiawen@ljwServer lib]$ 

哪位兄弟姐姐们能给我点提示，一点提示就好，不耽误大家太多的时间，谢谢！！！！！