<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML ><HEAD ><TITLE >Prepare the source directories</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="TimeSys Linux Install HOWTO" HREF="index.html"><LINK REL="PREVIOUS" TITLE="Install the packages" HREF="install_packages.html"><LINK REL="NEXT" TITLE="Configure the kernel" HREF="configure_kernel.html"></HEAD ><BODY CLASS="sect1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >TimeSys Linux Install HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="install_packages.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="configure_kernel.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="sect1" ><H1 CLASS="sect1" ><A NAME="prepare_source_directories" ></A >4. Prepare the source directories</H1 ><P > Before compiling the TimeSys Linux kernel, you need to set up the source directories so that the kernel knows about all the drivers and things on your system. To do so, issue the following commands: </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" WIDTH="100%" ><TR ><TD ><FONT COLOR="#000000" ><PRE CLASS="programlisting" > <TT CLASS="prompt" ># </TT ><TT CLASS="userinput" ><B ><B CLASS="command" >cd</B > /usr/src</B ></TT > <TT CLASS="prompt" ># </TT ><TT CLASS="userinput" ><B ><B CLASS="command" >mv</B > linux linux.old # Only if the linux directory already exists</B ></TT > <TT CLASS="prompt" ># </TT ><TT CLASS="userinput" ><B ><B CLASS="command" >mv</B > linux-2.4 linux-2.4.old</B ></TT > <TT CLASS="prompt" ># </TT ><TT CLASS="userinput" ><B ><B CLASS="command" >ln</B > -s /opt/timesys/linux/4.1/x86bsp/src/2.4.21-timesys-4.1/kernel linux</B ></TT > <TT CLASS="prompt" ># </TT ><TT CLASS="userinput" ><B ><B CLASS="command" >ln</B > -s /opt/timesys/linux/4.1/x86bsp/src/2.4.21-timesys-4.1/kernel linux-2.4</B ></TT > </PRE ></FONT ></TD ></TR ></TABLE ><P > Note that in the above commands, you may need to change <EM >x86bsp</EM > and the version numbers as needed for the TimeSys Linux package that you downloaded. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="install_packages.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="configure_kernel.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Install the packages</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Configure the kernel</TD ></TR ></TABLE ></DIV ></BODY ></HTML >