source: clfs-embedded/BOOK/cross-tools/mips/variables.xml @ 128905d

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;
]>

<sect1 id="ch-cross-tools-variables">
  <?dbhtml filename="variables.html"?>

  <title>Build Variables</title>

  <bridgehead renderas="sect4">Setting Host and Target</bridgehead>

  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
  href="../x86/variables.xml"
  xpointer="xpointer(//*[@os='a'])"/>

  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
  href="../x86/variables.xml"
  xpointer="xpointer(//*[@os='b'])"/>

  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
  href="../x86/variables.xml"
  xpointer="xpointer(//*[@os='c'])"/>

<screen os="d"><userinput>export CLFS_ARCH=$(echo ${CLFS_TARGET} | sed -e 's/-.*//' -e 's/mips.*/mips/' -e 's/mipsel.*/mips/'</userinput></screen>

  <para os="e1">Now we will setup out default endian needed we need to build:</para>

<screen os="e2"><userinput>export CLFS_ENDIAN=$(echo ${CLFS_TARGET} | sed -e 's/mipsel/LITTLE/' -e 's/mips/BIG/'</userinput></screen>

  <para os="m1">Now you will need to set the MIPS LEVEL. This determines how your
uClibc is built. There are currently 5 MIPS ISA Levels. To keep things simple
we are only using 2. For more information, go to
<ulink url="http://www.linux-mips.org/wiki/Instruction_Set_Architecture"/></para>

<screen os="m2"><userinput>export CLFS_MIPS_LEVEL="{mips level}"</userinput></screen>

  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
  href="../x86/variables.xml"
  xpointer="xpointer(//*[@os='e'])"/>

<screen os="f"><userinput>echo export CLFS_TARGET=\""${CLFS_TARGET}\"" &gt;&gt; ~/.bashrc
echo export CLFS_ARCH=\""${CLFS_ARCH}\"" &gt;&gt; ~/.bashrc
echo export CLFS_ENDIAN=\""${CLFS_ENDIAN}\"" &gt;&gt; ~/.bashrc
echo export CLFS_MIPS_LEVEL=\""${CLFS_MIPS_LEVEL}\"" &gt;&gt; ~/.bashrc</userinput></screen>

  <table os="g">
    <title>Processor Type and  Target Triplets</title>
    <?dbfo table-width="5.5in" ?>

    <tgroup cols="2">

      <colspec colnum="1" colwidth="2in"   colname="Processor"/>
      <colspec colnum="2" colwidth="2.5in" colname="Triplet"/>
      <colspec colnum="3" colwidth="1in"   colname="MIPS Level"/>

      <thead>
        <row>
          <entry>Processor</entry>
          <entry>Target Triplet</entry>
          <entry>MIPS Level</entry>
        </row>
      </thead>

      <tbody>
        <row>
          <entry>MIPS 32 bits Little Endian</entry>
          <entry>mipsel-unknown-linux-uclibc</entry>
          <entry>1</entry>
        </row>
        <row>
          <entry>MIPS 32 bits Big Endian</entry>
          <entry>mips-unknown-linux-uclibc</entry>
          <entry>1</entry>
        </row>
        <row>
          <entry>MIPS 64 bits Little Endian</entry>
          <entry>mips64el-unknown-linux-uclibc</entry>
          <entry>3</entry>
        </row>
        <row>
          <entry>MIPS 64 bits Big Endian</entry>
          <entry>mips64-unknown-linux-uclibc</entry>
          <entry>3</entry>
        </row>
      </tbody>

    </tgroup>

  </table>

</sect1>