source: clfs-embedded/BOOK/cross-tools/common/variables.xml@ 82ad590

<?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>

<screen os="b"><userinput>export CLFS_HOST=$(echo ${MACHTYPE} | sed "s/-[^-]*/-cross/")
export CLFS_TARGET="<replaceable>[target triplet]</replaceable>"</userinput></screen>

  <para os="c">Now we will set the architecture and endianess of the CPU based
  on the target triplet provided above:</para>

<screen os="d"><userinput>export CLFS_ARCH=$(echo ${CLFS_TARGET} | sed -e 's/-.*//' -e 's/i.86/i386/')
export CLFS_ENDIAN=little</userinput></screen>

  <para os="g">Now we will add this to <filename>~/.bashrc</filename>, just in
  case you have to exit and restart building later:</para>

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

</sect1>