lfs-book/chapter06/ncurses.xml

<?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-tools-ncurses" role="wrap">
  <?dbhtml filename="ncurses.html"?>

  <sect1info condition="script">
    <productname>ncurses</productname>
    <productnumber>&ncurses-version;</productnumber>
    <address>&ncurses-url;</address>
  </sect1info>

  <title>Ncurses-&ncurses-version;</title>

  <indexterm zone="ch-tools-ncurses">
    <primary sortas="a-Ncurses">Ncurses</primary>
    <secondary>tools</secondary>
  </indexterm>

  <sect2 role="package">
    <title/>

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
    href="../chapter08/ncurses.xml"
    xpointer="xpointer(/sect1/sect2[1]/para[1])"/>

    <segmentedlist>
      <segtitle>&buildtime;</segtitle>
      <segtitle>&diskspace;</segtitle>

      <seglistitem>
        <seg>&ncurses-tmp-sbu;</seg>
        <seg>&ncurses-tmp-du;</seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Ncurses</title>

    <para>First, ensure that <command>gawk</command> is found first during configuration:</para>

<screen><userinput remap="pre">sed -i s/mawk// configure</userinput></screen>

    <para>Then, run the following commands to build the <quote>tic</quote>
    program on the build host:</para>

<screen><userinput remap="pre">mkdir build
pushd build
  ../configure
  make -C include
  make -C progs tic
popd</userinput></screen>

    <para>Prepare Ncurses for compilation:</para>

<screen><userinput remap="configure">./configure --prefix=/usr                \
            --host=$LFS_TGT              \
            --build=$(./config.guess)    \
            --mandir=/usr/share/man      \
            --with-manpage-format=normal \
            --with-shared                \
            --without-debug              \
            --without-ada                \
            --without-normal             \
            --enable-widec</userinput></screen>

    <variablelist>
      <title>The meaning of the new configure options:</title>

      <varlistentry>
        <term><parameter>--with-manpage-format=normal</parameter></term>
        <listitem>
          <para>This prevents Ncurses installing compressed manual
          pages, which may happen if the host distribution itself
          has compressed manual pages.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--without-ada</parameter></term>
        <listitem>
          <para>This ensures that Ncurses does not build support for the Ada
          compiler which may be present on the host but will not be available
          once we enter the <command>chroot</command> environment.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--enable-widec</parameter></term>
        <listitem>
          <para>This switch causes wide-character libraries (e.g., <filename
          class="libraryfile">libncursesw.so.&ncurses-version;</filename>)
          to be built instead of normal ones (e.g., <filename
          class="libraryfile">libncurses.so.&ncurses-version;</filename>).
          These wide-character libraries are usable in both multibyte and
          traditional 8-bit locales, while normal libraries work properly
          only in 8-bit locales. Wide-character and normal libraries are
          source-compatible, but not binary-compatible.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--without-normal</parameter></term>
        <listitem>
          <para>This switch disables building and installing most static libraries.
          </para>
        </listitem>
      </varlistentry>

    </variablelist>

    <para>Compile the package:</para>

<screen><userinput remap="make">make</userinput></screen>

    <para>Install the package:</para>

<screen><userinput remap="install">make DESTDIR=$LFS TIC_PATH=$(pwd)/build/progs/tic install
echo "INPUT(-lncursesw)" > $LFS/usr/lib/libncurses.so</userinput></screen>

    <variablelist>
      <title>The meaning of the install options:</title>

      <varlistentry>
        <term><parameter>TIC_PATH=$(pwd)/build/progs/tic</parameter></term>
        <listitem>
          <para>We need to pass the path of the just built
          <command>tic</command> able to run on the building machine, so that
          the terminal database can be created without errors.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>echo "INPUT(-lncursesw)" > $LFS/usr/lib/libncurses.so</command></term>
        <listitem>
          <para>The <filename>libncurses.so</filename> library is needed by
          a few packages we will build soon. We create this small linker
          script, as this is what is done in <xref
          linkend="chapter-building-system"/>.</para>
        </listitem>
      </varlistentry>

    </variablelist>

    <para>Move the shared libraries to the
    <filename class="directory">/lib</filename> directory, where they are
    expected to reside:</para>

<screen><userinput remap="install">mv -v $LFS/usr/lib/libncursesw.so.6* $LFS/lib</userinput></screen>

    <para>Because the libraries have been moved, one symlink points to
    a non-existent file. Recreate it:</para>

<screen><userinput remap="install">ln -sfv ../../lib/$(readlink $LFS/usr/lib/libncursesw.so) $LFS/usr/lib/libncursesw.so</userinput></screen>


  </sect2>

  <sect2 role="content">
    <title/>

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

  </sect2>

</sect1>