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<HTML><HEAD><TITLE>Introduction</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.63"><LINKREL="HOME"TITLE="Linux From Scratch"HREF="../index.html"><LINKREL="UP"TITLE="Preparing the LFS system"HREF="../chapter05/chapter05.html"><LINKREL="PREVIOUS"TITLE="Preparing the LFS system"HREF="../chapter05/chapter05.html"><LINKREL="NEXT"TITLE="Why do we use static linking?"HREF="../chapter05/whystatic.html"></HEAD><BODYCLASS="sect1"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">Linux From Scratch: Version 3.1</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="../chapter05/chapter05.html">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 5. Preparing the LFS system</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="../chapter05/whystatic.html">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="sect1"><H1CLASS="sect1"><ANAME="ch05-introduction">5.1. Introduction</A></H1><P>In the following chapters we will install all the software that belongs to a basic Linux system. After you're done with this and the next chapter,you'll have a fully working Linux system. The remaining chapters deal with creating the boot scripts, making the LFS system bootable andsetting up basic networking.</P><P>The software in this chapter will be linked statically and will be reinstalled in the next chapter and linked dynamically. Thereason for the static version first is that there is a chance that ournormal Linux system and the LFS system aren't using the same CLibrary versions. If the programs in the first part are linked againstan older C library version, those programs might not work well on theLFS system. Another reason is to resolve circular dependencies. Anexample of such a dependency is that you need a compiler to install acompiler, and you're going to need a shell to install a shell and thatcompiler.</P><P>The key to learning what makes Linux tick is to know exactly what packagesare used for and why a user or the system needs them. Descriptionsof the package content are provided after the Installation subsection of eachpackage and in Appendix A as well.</P><P>During the installation of various packages, you will more than likely seeall kinds of compiler warnings scrolling by on the screen. These are normal and can be safely ignored. They are just that, warnings (mostly about improper use of the C or C++ syntax, but not illegal use. It's just that, often, C standards changed and packages still use the old standard which is not a problem).</P><P>Before we start, make sure the LFS environment variable is setupproperly if you decided to make use of it. Run the following:</P><P><TABLEBORDER="0"BGCOLOR="#E0E0E0"WIDTH="100%"><TR><TD><FONTCOLOR="#000000"><PRECLASS="screen"><TTCLASS="userinput"><B>echo $LFS</B></TT></PRE></FONT></TD></TR></TABLE></P><P>Check to make sure the output contains the correct directory to the LFSpartition's mount point (/mnt/lfs for example).</P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="../chapter05/chapter05.html">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="../index.html">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="../chapter05/whystatic.html">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Preparing the LFS system</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="../chapter05/chapter05.html">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Why do we use static linking?</TD></TR></TABLE></DIV></BODY></HTML>?? 快捷鍵說明
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