编译mcrypt出错（提示需要mhash）

Code:

export LD_LIBRARY_PATH=/root/lemp/libmcrypt-2.5.8/lib:/root/lemp/mhash-0.9.9.9/lib
export LDFLAGS="-L/root/lemp/mhash-0.9.9.9/lib/ -I/root/lemp/mhash-0.9.9.9/include/"
export CFLAGS="-I/root/lemp/mhash-0.9.9.9/include/"
./configure --prefix=/root/lemp/mcrypt-2.6.8/ --with-libmcrypt-prefix=/root/lemp/libmcrypt-2.5.8