source: postlfs/security/gpgme.xml

<?xml version="1.0" encoding="UTF-8"?>
<!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;

  <!ENTITY gpgme-download-http "&gnupg-http;/gpgme/gpgme-&gpgme-version;.tar.bz2">
  <!ENTITY gpgme-download-ftp  " ">
  <!ENTITY gpgme-md5sum        "01a8c05b409847e87daf0543e91f8c37">
  <!ENTITY gpgme-size          "1.8 MB">
  <!ENTITY gpgme-buildsize     "260 MB (with tests)">
  <!ENTITY gpgme-time          "1.0 SBU (with all bindings and tests; with parallelism=4)">
]>

<sect1 id="gpgme" xreflabel="GPGME-&gpgme-version;">
  <?dbhtml filename="gpgme.html"?>


  <title>GPGME-&gpgme-version;</title>

  <indexterm zone="gpgme">
    <primary sortas="a-GPGME">GPGME</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to GPGME</title>

    <para>
      The <application>GPGME</application> package is a C library
      that allows cryptography support to be added to a
      program. It is designed to make access to public key crypto
      engines like <application>GnuPG</application> or GpgSM easier
      for applications. <application>GPGME</application> provides
      a high-level crypto API for encryption, decryption, signing,
      signature verification and key management.
    </para>

    &lfs121_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&gpgme-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&gpgme-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &gpgme-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &gpgme-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &gpgme-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &gpgme-time;
        </para>
      </listitem>
    </itemizedlist>
<!--
    <bridgehead renderas="sect3">Additional Downloads</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Recommended patch (required if SWIG is installed):
          <ulink url="&patch-root;/gpgme-&gpgme-version;-gpg_error_1_46-1.patch"/>
        </para>
      </listitem>
    </itemizedlist>
-->
    <bridgehead renderas="sect3">GPGME Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="libassuan"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="doxygen"/> and
      <xref linkend="graphviz"/> (for API documentation),
      <xref linkend="gnupg2"/> (required if Qt or SWIG are installed;
        used during the test suite),
      <xref linkend="clisp"/>,
      &qt5-deps;, and
      <xref linkend="swig"/> (for language bindings)
    </para>

  </sect2>

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

    <para>
      Install <application>GPGME</application> by running the following
      commands:
    </para>
<!--gpgme 1.22 FTBFS when building in tree. Upstream thinks building
    should be done out of tree, but this is not in the doc yet
    https://github.com/gpg/gpgme/commit/24a8c279da98fe7e586a9fc3cd91175c9e60ffef
    -->
<screen><userinput>mkdir build &amp;&amp;
cd    build &amp;&amp;

../configure --prefix=/usr --disable-gpg-test &amp;&amp;
make PYTHONS=</userinput></screen>

    <para>
      If <xref linkend='swig'/> is installed, build the Python 3 binding as
      a wheel:
    </para>

<screen><userinput>if swig -version > /dev/null; then
  srcdir=$PWD/../lang/python \
  top_builddir=$PWD          \
  &build-wheel-cmd; $PWD/lang/python
fi</userinput></screen>

    <para>
      To test the results, you should have <xref linkend="gnupg2"/> installed
      and remove the <option>--disable-gpg-test</option> above. If
      <xref linkend='swig'/> is installed, it's necessary to adapt the
      test suite to use the Python 3 binding just built as a wheel as well.
      Issue:
    </para>

<screen remap='test'><userinput>if swig -version > /dev/null; then
  python3 -m venv testenv                                              &amp;&amp;
  testenv/bin/pip3 install --no-index --find-links=dist --no-cache-dir \
                           gpg                                         &amp;&amp;
  sed '/PYTHON/s#run-tests.py#&amp; --python-libdir=/dev/null#'            \
      -i lang/python/tests/Makefile
fi &amp;&amp;

make -k check PYTHONS= PYTHON=$PWD/testenv/bin/python3</userinput></screen>

    <para>
      Now, as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>make install PYTHONS=</userinput></screen>

    <para>
      If <xref linkend='swig'/> is installed, still as the &root; user,
      install the Python 3 binding:
    </para>

<screen role="root"><userinput>if swig -version > /dev/null; then
  &install-wheel; gpg
fi</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para>
      <parameter>--disable-gpg-test</parameter>: if this parameter is not
      passed to configure, the test programs are built during
      <command>make</command> stage, which requires <xref linkend="gnupg2"/>.
      This parameter is not needed if <xref linkend="gnupg2"/> is installed.
    </para>

    <para>
      <parameter>PYTHONS=</parameter>: Disable building Python binding
      using the deprecated <command>python3 setup.py build</command>
      command.  The explicit instruction to build the Python 3 binding with
      the <command>pip3 wheel</command> command is provided.
    </para>

  </sect2>

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

    <segmentedlist>
      <segtitle>Installed Program</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directory</segtitle>

      <seglistitem>
        <seg>
          gpgme-json, and gpgme-tool
        </seg>
        <seg>
          libgpgme.so, libgpgmepp.so, and libqgpgme.so
        </seg>
        <seg>
          /usr/include/{gpgme++,qgpgme,QGpgME},
          /usr/lib/cmake/{Gpgmepp,QGpgme}.
          /usr/lib/python&python3-majorver;/site-packages/gpg{,-&gpgme-version;.dist-info}, and
          /usr/share/common-lisp/source/gpgme
        </seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="gpgme-json">
        <term><command>gpgme-json</command></term>
        <listitem>
          <para>
            outputs <application>GPGME</application> commands in JSON format
          </para>
          <indexterm zone="gpgme gpgme-json">
            <primary sortas="b-gpgme-json">gpgme-json</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gpgme-tool">
        <term><command>gpgme-tool</command></term>
        <listitem>
          <para>
            is an assuan server exposing <application>GPGME</application>
            operations, such as printing fingerprints and keyids with
            keyservers
          </para>
          <indexterm zone="gpgme gpgme-tool">
            <primary sortas="b-gpgme-tool">gpgme-tool</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <!-- As of 1.13.1, this library isn't present anymore.
      <varlistentry id="libgpgme-pthread">
        <term><filename class="libraryfile">libgpgme-pthread.so</filename></term>
        <listitem>
          <para>
            contains the <application>GPGME</application> API functions for
            applications using pthread.
          </para>
          <indexterm zone="gpgme libgpgme-pthread">
            <primary sortas="c-libgpgme-pthread">libgpgme-pthread.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>
      -->

      <varlistentry id="libgpgme">
        <term><filename class="libraryfile">libgpgme.so</filename></term>
        <listitem>
          <para>
            contains the <application>GPGME</application> API functions
          </para>
          <indexterm zone="gpgme libgpgme">
            <primary sortas="c-libgpgme">libgpgme.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libgpgmepp">
        <term><filename class="libraryfile">libgpgmepp.so</filename></term>
        <listitem>
          <para>
            contains the C++ <application>GPGME</application> API functions
          </para>
          <indexterm zone="gpgme libgpgmepp">
            <primary sortas="c-libgpgmepp">libgpgmepp.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libqgpgme">
        <term><filename class="libraryfile">libqgpgme.so</filename></term>
        <listitem>
          <para>
            contains API functions for handling GPG operations in
            <application>Qt</application> applications
          </para>
          <indexterm zone="gpgme libqgpgme">
            <primary sortas="c-libqgpgme">libqgpgme.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>