交叉编译器简介 在一种计算机环境中运行的编译程序，能编译出在另外一种环境下运行的代码
这对交叉编译尤其不利，因为您可能不能运行实际上是由交叉编译器创建的可执行程序。
This is especially pernicious for cross-compiling, since you probably can't run an executable actually created with the cross compiler.
您甚至可以设置一个交叉编译器以及相关的工具，后面我们会更详细地进行介绍。
You could even set up a cross-compiler and related tools and poke around in a little more detail.
用gcc存在一个问题，对每一个目标OS或是系统架构，我们都需要一个单独的交叉编译器。
The problem with using GCC was that for every target OS or architecture we would need a separate cross compiler.
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