1 <?xml version="1.0" encoding="ISO-8859-1"?>
2 <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../general.ent">
8 <sect1 id="ch-system-ninja" role="wrap">
9 <?dbhtml filename="ninja.html"?>
11 <sect1info condition="script">
12 <productname>ninja</productname>
13 <productnumber>&ninja-version;</productnumber>
14 <address>&ninja-url;</address>
17 <title>Ninja-&ninja-version;</title>
19 <indexterm zone="ch-system-ninja">
20 <primary sortas="a-Ninja">Ninja</primary>
23 <sect2 role="package">
26 <para>Ninja is a small build system with a focus on speed.</para>
29 <segtitle>&buildtime;</segtitle>
30 <segtitle>&diskspace;</segtitle>
33 <seg>&ninja-ch6-sbu;</seg>
34 <seg>&ninja-ch6-du;</seg>
40 <sect2 role="installation">
41 <title>Installation of Ninja</title>
43 <para>When run, ninja normally runs a maximum number of processes
44 in parallel. By default this is the number of cores on the system
45 plus two. In some cases this can overheat a CPU or run a system out
46 of memory. If run from the command line, passing a -jN parameter
47 will limit the number of parallel processes, but some packages
48 embed the execution of ninja and do not pass a -j parameter.</para>
50 <para>Using the <emphasis>optional</emphasis> procedure below allows a user to
51 limit the number of parallel processes via an environment variable,
52 NINJAJOBS. <command>For example</command>, setting:
54 <!--Using <command> here to make the output bold. We really don't want
55 users setting this now and experience shows that many users blindly
56 copy/paste anything in a box. -->
58 <screen>export NINJAJOBS=4</screen>
60 will limit ninja to four parallel processes.</para>
62 <para>If desired, add the capability to use the environment variable
63 NINJAJOBS by running:</para>
65 <screen><userinput remap="pre">sed -i '/int Guess/a \
67 char* jobs = getenv( "NINJAJOBS" );\
68 if ( jobs != NULL ) j = atoi( jobs );\
69 if ( j > 0 ) return j;\
70 ' src/ninja.cc</userinput></screen>
72 <para>Build Ninja with:</para>
74 <screen><userinput remap="configure">python3 configure.py --bootstrap</userinput></screen>
77 <title>The meaning of the build option:</title>
80 <term><parameter>--bootstrap</parameter></term>
82 <para>This parameter forces ninja to rebuild itself for the current
89 <para>To test the results, issue:</para>
91 <screen><userinput remap="test">./ninja ninja_test
92 ./ninja_test --gtest_filter=-SubprocessTest.SetWithLots</userinput></screen>
94 <para>Install the package:</para>
96 <screen><userinput remap="install">install -vm755 ninja /usr/bin/
97 install -vDm644 misc/bash-completion /usr/share/bash-completion/completions/ninja
98 install -vDm644 misc/zsh-completion /usr/share/zsh/site-functions/_ninja</userinput></screen>
102 <sect2 id="contents-ninja" role="content">
103 <title>Contents of Ninja</title>
106 <segtitle>Installed programs</segtitle>
113 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
114 <?dbfo list-presentation="list"?>
115 <?dbhtml list-presentation="table"?>
117 <varlistentry id="ninja">
118 <term><command>ninja</command></term>
120 <para>is the Ninja build system.</para>
121 <indexterm zone="ch-system-ninja ninja">
122 <primary sortas="b-ninja">ninja</primary>