source: networking/netlibs/curl.xml@ 0990e658

<?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;

  <!ENTITY curl-download-http "https://curl.haxx.se/download/curl-&curl-version;.tar.lzma">
  <!ENTITY curl-download-ftp  " ">
  <!ENTITY curl-md5sum        "6080c1eb3e72d5da6c892ba72a074ad2">
  <!ENTITY curl-size          "5.7 MB">
  <!ENTITY curl-buildsize     "55 MB (additional 9 MB for tests)">
  <!ENTITY curl-time          "0.4 SBU (additional 9.9 SBU for tests)">
]>

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

  <sect1info>
    <othername>$LastChangedBy$</othername>
    <date>$Date$</date>
  </sect1info>

  <title>cURL-&curl-version;</title>

  <indexterm zone="curl">
    <primary sortas="a-cURL">cURL</primary>
  </indexterm>

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

    <para>
      The <application>cURL</application> package contains an utility
      and a library used for transferring files with URL syntax to any of
      the following protocols: FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP,
      TELNET, DICT, LDAP, LDAPS and FILE. Its ability to both download
      and upload files can be incorporated into other programs to support
      functions like streaming media.
    </para>

    &lfs7a_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&curl-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&curl-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &curl-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &curl-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &curl-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &curl-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">cURL Dependencies</bridgehead>

    <bridgehead renderas="sect4">Recommended</bridgehead>
    <para role="recommended">
      <xref linkend="cacerts"/> and
      <xref linkend="openssl"/> or <xref linkend="gnutls"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="libidn"/>,
      <xref linkend="mitkrb"/>,
      <xref linkend="nghttp2"/>,
      <xref linkend="openldap"/>,
      <xref linkend="samba"/>,
      <ulink url="http://daniel.haxx.se/projects/c-ares/">c-ares</ulink>,
      <ulink url="https://launchpad.net/libmetalink/">libmetalink</ulink>,
      <ulink url="https://github.com/rockdaboot/libpsl">libpsl</ulink>,
      <ulink url="http://rtmpdump.mplayerhq.hu/">librtmp</ulink>,
      <ulink url="http://www.libssh2.org">libssh2</ulink>,
      <ulink url="https://tls.mbed.org/">mbed TLS (formerly known as
      PolarSSL)</ulink>, and
      <ulink url="http://spnego.sourceforge.net/">
      SPNEGO</ulink>
    </para>

    <bridgehead renderas="sect4">Optional for Running the Test Suite</bridgehead>
    <para role="optional">
      <xref linkend="stunnel"/> (for the HTTPS and FTPS tests) and
      <xref linkend="valgrind"/>
    </para>

    <para condition="html" role="usernotes">User Notes:
      <ulink url="&blfs-wiki;/curl"/>
    </para>
  </sect2>

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

    <para>
      Install <application>cURL</application> by running the following
      commands:
    </para>

<screen><userinput>./configure --prefix=/usr                           \
            --disable-static                        \
            --enable-threaded-resolver              \
            --with-ca-bundle=/etc/ssl/ca-bundle.crt &amp;&amp;
make</userinput></screen>

<!--    <para>
      Running the test suite is optional. About 2% of the tests fail. Increase
      in test time by each failed test is about 10%. Tests SBU above was
      obtained disabling failing tests, with:
    </para>

<screen><userinput>cat &gt;&gt; tests/data/DISABLED &lt;&lt; "EOF"
<literal>564
700
701
703
706
707
708
709
710
711
712</literal>
EOF</userinput></screen>

I had the following fail:
 300  301  303  304  306 309 310 311  312  325
 400  401  403  406  407 408 409 560 1112 2034
2035 2037 2038 2041 2042

  - Bruce 20151016

Tests may be using capabilites removed from recent ssh due to
security issues.


    <para>
       and running <command>make test</command>.
    </para>-->

    <para>
      To run the test suite, issue: <command>make test</command>. <!-- Two tests,
      1139 and 1140, may fail. Works fine for me. Douglas 20160720 --><!--  Some
      tests (up to 2%) may fail due to timing issues, kernel configuration,
      or other issues.-->
    </para>

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

<screen role="root"><userinput>make install &amp;&amp;
install -vdm755 lib/mk-ca-bundle.pl /usr/bin &amp;&amp;

rm -rf docs/examples/.deps &amp;&amp;

find docs \( -name Makefile\* \
          -o -name \*.1       \
          -o -name \*.3 \)    \
          -exec rm {} \;      &amp;&amp;
install -v -d -m755 /usr/share/doc/curl-&curl-version; &amp;&amp;
cp -v -R docs/*     /usr/share/doc/curl-&curl-version;</userinput></screen>

    <para>
      Simple tests to the new installed <command>curl</command>:
      <command>curl --trace-ascii debugdump.txt http://www.example.com/</command>
      and
      <command>curl --trace-ascii d.txt --trace-time http://example.com/</command>.
      Inspect the locally created trace files <filename>debugdump.txt</filename>
      and <filename>d.txt</filename>, which contain version downloaded
      files information, etc. One file has the time for each action logged.
    </para>
  </sect2>

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

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
      href="../../xincludes/static-libraries.xml"/>

    <para>
      <parameter>--enable-threaded-resolver</parameter>: This switch enables
      <application>cURL</application>'s builtin threaded DNS resolver.
    </para>

    <para>
      <parameter>--with-ca-bundle=/etc/ssl/ca-bundle.crt</parameter>: This
      switch sets the location of the BLFS <xref linkend="cacerts"/> bundle.
    </para>

    <para>
      <option>--with-gssapi</option>: This parameter adds
      <application>Kerberos 5</application> support to
      <filename class="libraryfile">libcurl</filename>.
    </para>

    <para>
      <option>--without-ssl --with-gnutls</option>: Use to
      build with <application>GnuTLS</application> support
      instead of <application>OpenSSL</application> for SSL/TLS.
    </para>

    <para>
      <command>find docs ... -exec rm {} \;</command>: This command removes
      <filename>Makefiles</filename> and man files from the documentation
      directory that would otherwise be installed by the commands that follow.
    </para>

  </sect2>

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

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Library</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>
           curl, curl-config, and mk-ca-bundle.pl
        </seg>
        <seg>
           libcurl.so
        </seg>
        <seg>
          /usr/include/curl and
          /usr/share/doc/curl-&curl-version;
        </seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="curl-prog">
        <term><command>curl</command></term>
        <listitem>
         <para>
           is a command line tool for transferring files with URL syntax.
         </para>
          <indexterm zone="curl curl-prog">
            <primary sortas="b-curl">curl</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="curl-config">
        <term><command>curl-config</command></term>
        <listitem>
          <para>
            prints information about the last compile, like libraries
            linked to and prefix setting.
          </para>
          <indexterm zone="curl curl-config">
            <primary sortas="b-curl-config">curl-config</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="mk-ca-bundle-pl">
        <term><command>mk-ca-bundle.pl</command></term>
        <listitem>
          <para>
            downloads a copy of certdata.txt from the Mozilla version control
            system, and reformats it for use by
            <application>gnutls</application>.
          </para>
          <indexterm zone="curl mk-ca-bundle-pl">
            <primary sortas="b-mk-ca-bundle-pl">mk-ca-bundle.pl</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libcurl">
        <term><filename class="libraryfile">libcurl.so</filename></term>
        <listitem>
          <para>
            provides the API functions required by
            <command>curl</command> and other programs.
          </para>
          <indexterm zone="curl libcurl">
            <primary sortas="c-libcurl">libcurl.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>