GCC编译源码出错：Building GCC requires GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0

接上篇博客，因为上一篇博客没有解决实际问题，所以这次继续解决问题：

之前测试过gcc4.4.0版本，发现不适合这个方法（具体原因，后面会说）。

测试版本：gcc4.6.2

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See Installing GCC: Configuration for the full documentation. A major benefit of running srcdir/configure from outside the source directory (instead of running./configure) is that the source directory will not be modified in any way, so if your build fails or you want to re-configure and build again, you simply delete everything in the objdir and start again.

For example, configuring and building GCC 4.6.2 should be as simple as:

具体的命令如下：
前提你要下载gcc4.6.2版本，下载地址：https://bigsearcher.com/mirrors/gcc/releases/gcc-4.6.2/

tar xzf gcc-4.6.