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<?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-system-gmp" role="wrap">
<?dbhtml filename="gmp.html"?>
<sect1info condition="script">
<productname>gmp</productname>
<productnumber>&gmp-version;</productnumber>
<address>&gmp-url;</address>
</sect1info>
<title>GMP-&gmp-version;</title>
<indexterm zone="ch-system-gmp">
<primary sortas="a-GMP">GMP</primary>
</indexterm>
<sect2 role="package">
<title/>
<para>The GMP package contains math libraries. These have useful functions
for arbitrary precision arithmetic.</para>
<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem>
<seg>&gmp-ch6-sbu;</seg>
<seg>&gmp-ch6-du;</seg>
</seglistitem>
</segmentedlist>
</sect2>
<sect2 role="installation">
<title>Installation of GMP</title>
<note>
<para>If you are building for 32-bit x86, but you have a CPU which is
capable of running 64-bit code <emphasis>and</emphasis> you have specified
<envar>CFLAGS</envar> in the environment, the configure script will
attempt to configure for 64-bits and fail.
Avoid this by invoking the configure command below with
<screen role="nodump"><userinput><parameter>ABI=32</parameter> ./configure ...</userinput></screen></para>
</note>
<para>First, fix a minor error noted on the upstream web page:</para>
<screen><userinput remap="pre">sed -i 's/np + dn, qn/& - dn/' mpn/generic/dcpi1_bdiv_q.c</userinput></screen>
<para>Prepare GMP for compilation:</para>
<screen><userinput remap="configure">./configure --prefix=/usr --enable-cxx --enable-mpbsd</userinput></screen>
<variablelist>
<title>The meaning of the new configure options:</title>
<varlistentry>
<term><parameter>--enable-cxx</parameter></term>
<listitem>
<para>This parameter enables C++ support</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>--enable-mpbsd</parameter></term>
<listitem>
<para>This builds the Berkeley MP compatibility library</para>
</listitem>
</varlistentry>
</variablelist>
<para>Compile the package:</para>
<screen><userinput remap="make">make</userinput></screen>
<important>
<para>The test suite for GMP in this section is considered critical.
Do not skip it under any circumstances.</para>
</important>
<para>Test the results:</para>
<screen><userinput remap="test">make check 2>&1 | tee gmp-check-log</userinput></screen>
<para>Ensure that all 162 tests in the test suite passed.
Check the results by issuing the following command:</para>
<screen><userinput remap="test">awk '/tests passed/{total+=$2} ; END{print total}' gmp-check-log</userinput></screen>
<para>Install the package:</para>
<screen><userinput remap="install">make install</userinput></screen>
<para>If desired, install the documentation:</para>
<screen><userinput remap="install">mkdir -v /usr/share/doc/gmp-&gmp-version;
cp -v doc/{isa_abi_headache,configuration} doc/*.html \
/usr/share/doc/gmp-&gmp-version;</userinput></screen>
</sect2>
<sect2 id="contents-gmp" role="content">
<title>Contents of GMP</title>
<segmentedlist>
<segtitle>Installed Libraries</segtitle>
<segtitle>Installed directory</segtitle>
<seglistitem>
<seg>libgmp.{a,so}, libgmpxx.{a,so}, and libmp.{a,so}</seg>
<seg>/usr/share/doc/gmp-&gmp-version;</seg>
</seglistitem>
</segmentedlist>
<variablelist>
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>
<varlistentry id="libgmp">
<term><filename class="libraryfile">libgmp</filename></term>
<listitem>
<para>Contains precision math functions.</para>
<indexterm zone="ch-system-gmp libgmp">
<primary sortas="c-libgmp">libgmp</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="libgmpxx">
<term><filename class="libraryfile">libgmpxx</filename></term>
<listitem>
<para>Contains C++ precision math functions.</para>
<indexterm zone="ch-system-gmp libgmpxx">
<primary sortas="c-libgmpxx">libgmpxx</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="libmp">
<term><filename class="libraryfile">libmp</filename></term>
<listitem>
<para>Contains the Berkeley MP math functions.</para>
<indexterm zone="ch-system-gmp libmp">
<primary sortas="c-libmp">libmp</primary>
</indexterm>
</listitem>
</varlistentry>
</variablelist>
</sect2>
</sect1>
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