source: clfs-embedded/BOOK/cross-tools/x86/uclibc-headers.xml @ e2d2a2d

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
  "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;
]>

<sect1 id="ch-cross-tools-uclibc-headers" role="wrap">
  <?dbhtml filename="uclibc-headers.html"?>

  <title>uClibc-&uclibc-version; Headers</title>

  <indexterm zone="ch-cross-tools-uclibc-headers">
    <primary sortas="a-uClibc">uClibc</primary>
    <secondary>cross tools, headers</secondary>
  </indexterm>

  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
  href="uclibc.xml"
  xpointer="xpointer(//*[@role='package'])"/>

  <sect2 role="installation">
    <title>Installation of uClibc Headers</title>

    <para os="a">Since we are cross-compiling, we need to make sure when we
    configuration for our architecture we get the correct information. The
    following sed makes sure we are using the proper settings for our
    architecture: (This is a place holder for the other architectures</para>

<screen os="b"><userinput>cp extra/Configs/Config.in extra/Configs/Config.in.orig
sed -e "s:default TARGET_i386:default TARGET_i386:" \
   extra/Configs/Config.in.orig > extra/Configs/Config.in</userinput></screen>

    <para os="c">By default uClibc symlinks all its headers from the source, we
    will change this behavious with the following sed:</para>
        
<screen os="d"><userinput>cp Makefile Makefile.orig
sed -e 's/$(LN) -fs/cp/g' Makefile.orig > Makefile
for file in `find libc/sysdeps/linux -name Makefile`; do
        cp $file $file.orig
        sed -e 's/$(LN) -fs/cp/g' -e 's@../libc/@$(TOPDIR)libc/@g' $file.orig > $file
done</userinput></screen>

    <para os="e">Now we will ask uClibc to create a default configuration:</para>

<screen os="f"><userinput>make defconfig</userinput></screen>

   <para os="g">Create the Headers:</para>

<screen os="h"><userinput>make KERNEL_SOURCE=${CLFS}/usr TARGET_ARCH=i386 headers</userinput></screen>

   <para os="i">We will remove the files that were copied over from our Linux Headers, these
   files were copied into the source directory of uClibc:</para>

<screen os="j"><userinput>rm include/{asm,asm-generic,linux}</userinput></screen>

   <para os="k">Install the Headers:</para>

<screen os="l"><userinput>cp -a include/* ${CLFS}/usr/include</userinput></screen>

  </sect2>

  <sect2 role="content" id="contents-uclibc-headers">
    <title/>

    <para>Details on this package are located in <xref
    linkend="contents-uclibc" role="."/></para>

  </sect2>

</sect1>