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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-ninja" role="wrap">
<?dbhtml filename="ninja.html"?>
<sect1info condition="script">
<productname>ninja</productname>
<productnumber>&ninja-version;</productnumber>
<address>&ninja-url;</address>
</sect1info>
<title>Ninja-&ninja-version;</title>
<indexterm zone="ch-system-ninja">
<primary sortas="a-Ninja">Ninja</primary>
</indexterm>
<sect2 role="package">
<title/>
<para>Ninja is a small build system with a focus on speed.</para>
<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem>
<seg>&ninja-ch6-sbu;</seg>
<seg>&ninja-ch6-du;</seg>
</seglistitem>
</segmentedlist>
</sect2>
<sect2 role="installation">
<title>Installation of Ninja</title>
<para>When run, ninja normally runs a maximum number of processes
in parallel. By default this is the number of cores on the system
plus two. In some cases this can overheat a CPU or run a system out
of memory. If run from the command line, passing a -jN parameter
will limit the number of parallel processes, but some packages
embed the execution of ninja and do not pass a -j parameter.</para>
<para>Using the <emphasis>optional</emphasis> patch below allows a user to
limit the number of parallel processes via an environment variable,
NINJAJOBS. <command>For example</command> setting:
<!-- Using <command> here to make the output bold. We really don't want
users setting this now and experience shows that many users blindly
copy/paste anything in a box. -->
<screen>export NINJAJOBS=4</screen>
will limit ninja to four parallel processes.</para>
<para>If desired, install the patch by running:</para>
<screen><userinput remap="pre">patch -Np1 -i ../ninja-1.8.2-add_NINJAJOBS_var-1.patch</userinput></screen>
<para>Build Ninja with:</para>
<screen><userinput remap="configure">python3 configure.py --bootstrap</userinput></screen>
<variablelist>
<title>The meaning of the build option:</title>
<varlistentry>
<term><parameter>--bootstrap</parameter></term>
<listitem>
<para>This parameter forces ninja to rebuild itself for the current
system.</para>
</listitem>
</varlistentry>
</variablelist>
<para>To test the results, issue:</para>
<screen><userinput remap="test">python3 configure.py
./ninja ninja_test
./ninja_test --gtest_filter=-SubprocessTest.SetWithLots</userinput></screen>
<para>Install the package:</para>
<screen><userinput remap="install">install -vm755 ninja /usr/bin/
install -vDm644 misc/bash-completion /usr/share/bash-completion/completions/ninja
install -vDm644 misc/zsh-completion /usr/share/zsh/site-functions/_ninja</userinput></screen>
</sect2>
<sect2 id="contents-ninja" role="content">
<title>Contents of Ninja</title>
<segmentedlist>
<segtitle>Installed programs</segtitle>
<seglistitem>
<seg>ninja</seg>
</seglistitem>
</segmentedlist>
<variablelist>
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>
<varlistentry id="ninja">
<term><command>ninja</command></term>
<listitem>
<para>is the Ninja build system.</para>
<indexterm zone="ch-system-ninja ninja">
<primary sortas="b-ninja">ninja</primary>
</indexterm>
</listitem>
</varlistentry>
</variablelist>
</sect2>
</sect1>
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