libmpfr.so.1()(64bit) is needed by cpp-4.4.6-3.el6.x86_64

libmpfr.so.1()(64bit) is needed by cpp-4.4.6-3.el6.x86_64-->解决方法

RedHat Linux在安装gcc时需要cpp和cloog-ppl
但是在安装cpp的时候需要这个依赖： libmpfr.so.1()(64bit) is needed by cpp-4.4.6-3.el6.x86_64
安装cloog-ppl的时候需要这2个依赖： libppl.so.7()(64bit) is needed by cloog-ppl-0.15.7-1.2.el6.x86_64
                                     libppl_c.so.2()(64bit) is needed by cloog-ppl-0.15.7-1.2.el6.x86_64