source: chapter06/ncurses.xml

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<!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-normal             \
            --with-cxx-shared            \
            --without-debug              \
            --without-ada                \
            --disable-stripping          \
            --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 from installing compressed manual
          pages, which may happen if the host distribution itself
          has compressed manual pages.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--with-shared</parameter></term>
        <listitem>
          <para>This makes Ncurses build and install shared C libraries.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--without-normal</parameter></term>
        <listitem>
          <para>This prevents Ncurses from building and installing static C
          libraries.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--without-debug</parameter></term>
        <listitem>
          <para>This prevents Ncurses from building and installing debug
          libraries.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--with-cxx-shared</parameter></term>
        <listitem>
          <para>This makes Ncurses build and install shared C++ bindings. It
          also prevents it building and installing static C++ bindings.</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>--disable-stripping</parameter></term>
        <listitem>
          <para>This switch prevents the building system from
          using the <command>strip</command> program from the host.
          Using host tools on cross-compiled programs can cause failure.</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-release;</filename>)
          to be built instead of normal ones (e.g., <filename
          class="libraryfile">libncurses.so.&ncurses-release;</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>

    </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
ln -sv libncursesw.so $LFS/usr/lib/libncurses.so
sed -e 's/^#if.*XOPEN.*$/#if 1/' \
    -i $LFS/usr/include/curses.h</userinput></screen>
<!--
    <para>Remove an unneeded static library not handled by
    <command>configure</command>:</para>

<screen><userinput remap="install">rm -v $LFS/usr/lib/libncurses++w.a</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 newly built
          <command>tic</command> program that runs on the building machine, so
          the terminal database can be created without errors.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>ln -sv libncursesw.so $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 symlink to use
          <filename>libncursesw.so</filename> as a replacement.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><command>sed -e 's/^#if.*XOPEN.*$/#if 1/' ...</command></term>
        <listitem>
          <para>The header file <filename>curses.h</filename> contains
          the definition of various Ncurses data structures.  With different
          preprocessor macro definitions two different sets of the data
          structure definition may be used: the 8-bit definition is
          compatible with <filename>libncurses.so</filename> and the
          wide-character definition is compatible with
          <filename>libncursesw.so</filename>.  Since we are using
          <filename>libncursesw.so</filename> as a replacement of
          <filename>libncurses.so</filename>, edit the header file so it
          will always use the wide-character data structure definition
          compatible with <filename>libncursesw.so</filename>.</para>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

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

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

  </sect2>

</sect1>