美股近60年间牛熊市存在着一定的周期性的特点,并且与产业趋势有很大的关系。从历史数据来看,熊市持续的时间要比牛市持续的时间短得多。
I am trying to build Linux From Scratch, and now I am at chapter 开发者_Python百科5.4, which tells me how to build Binutils. I have binutils 2.20\'s source code, but when I try to build it: