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1 <!-- The content of this document is licensed under the CC-BY-SA license -->
2 <!-- See http://creativecommons.org/licenses/by-sa/1.0 -->
3
4 <!-- $Header: /home/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-working-features.xml,v 1.1 2003/11/20 10:52:35 swift Exp $ -->
5
6 <sections>
7 <section>
8 <title>DistCC</title>
9 <subsection>
10 <title>What is DistCC?</title>
11 <body>
12
13 <p>
14 <c>distcc</c> is a program to distribute compilations across several, not
15 necessarily identical, machines on a network. The <c>distcc</c> client sends all
16 necessary information to the available DistCC servers (running <c>distccd</c>)
17 so they can compile pieces of sourcecode for the client. The net result is a
18 faster compilation time.
19 </p>
20
21 <p>
22 You can find more elaborate information about <c>distcc</c> (and information on
23 how to have it work with Gentoo) in our <uri link="/doc/en/distcc.xml">Gentoo
24 Distcc Documentation</uri>.
25 </p>
26
27 </body>
28 </subsection>
29 <subsection>
30 <title>Installing DistCC</title>
31 <body>
32
33 <p>
34 Distcc ships with a graphical monitor to monitor tasks that your computer is
35 sending away for compilation. If you use Gnome then put 'gnome' in your
36 <c>USE</c> setting. However, if you don't use Gnome and would still like to have
37 the monitor then you should put 'gtk' in your <c>USE</c> setting.
38 </p>
39
40 <p>
41 Installing distcc is, as is with all software available through Gentoo's
42 Portage, extremely easy:
43 </p>
44
45 <note>
46 From now on, as you now know how to install binary packages if you want, we will
47 omit the <c>--usepkg</c> option throughout the rest of the Gentoo Handbook.
48 </note>
49
50 <pre caption="Installing Distcc">
51 # <i>emerge distcc</i>
52 </pre>
53
54 </body>
55 </subsection>
56 <subsection>
57 <title>Activating Portage Support</title>
58 <body>
59
60 <p>
61 Well, if installation is easy, the rest should be easy too :) So let us quickly
62 activate the Portage support for <c>distcc</c>.
63 </p>
64
65 <p>
66 First, open <path>/etc/make.conf</path> and edit the <c>FEATURES</c> variable so
67 it contains the <c>distcc</c> keyword. Next, edit the <c>MAKEOPTS</c> variable
68 so it reads <c>-jX</c> with <c>X</c> the number of active <c>distccd</c> hosts
69 (including the host that will use <c>distcc</c> even though it doesn't
70 necessarily need to run <c>distccd</c>) plus one:
71 </p>
72
73 <pre caption="Possible MAKEOPTS setting in /etc/make.conf">
74 <comment># Suppose you have 6 distccd hosts excluding this host:</comment>
75 MAKEOPTS="-j8"
76 </pre>
77
78 <p>
79 Now, still inside <path>/etc/make.conf</path>, uncomment the
80 <c>PORTAGE_TMPDIR</c> line and add the following line at the end
81 of the file:
82 </p>
83
84 <pre caption="Add an extra, distcc-specific variable to /etc/make.conf">
85 <comment># Don't forget to uncomment the PORTAGE_TMPDIR variable</comment>
86 DISTCC_DIR=${PORTAGE_TMPDIR}/portage/.distcc
87 </pre>
88
89 </body>
90 </subsection>
91 </section>
92 <section>
93 <title>cCache</title>
94 <subsection>
95 <title>What is cCache?</title>
96 <body>
97
98 </body>
99 </subsection>
100 <subsection>
101 <title>Installing cCache</title>
102 <body>
103
104 </body>
105 </subsection>
106 <subsection>
107 <title>Activating Portage Support</title>
108 <body>
109
110 </body>
111 </subsection>
112 </section>
113 <section>
114 <title>Binary Packages</title>
115 <subsection>
116 <title>Creating binary packages</title>
117 <body>
118
119 <p>
120 We have already discussed how to work with prebuild packages, but how do you
121 create your own prebuild packages?
122 </p>
123
124 <p>
125 If the package is already installed, you can use the <c>quickpkg</c> command
126 which will make a tarball of the installed files. This is very interesting for
127 backup purposes!
128 </p>
129
130 <pre caption="Using quickpkg">
131 # <i>quickpkg gnumeric</i>
132 </pre>
133
134 <p>
135 If the package isn't installed yet, you can install it using <c>emerge</c> and
136 ask to build a binary package too. <c>emerge</c> uses the <c>--buildpkg</c>
137 option (<c>-b</c> in short) for this:
138 </p>
139
140 <pre caption="Installing gnumeric and building binary packages too">
141 # <i>emerge --buildpkg gnumeric</i>
142 </pre>
143
144 <p>
145 If you want Portage to do this by default, you should set the <c>buildpkg</c>
146 keyword in the <c>FEATURES</c> variable declared in <path>/etc/make.conf</path>.
147 </p>
148
149 <p>
150 If you don't want to install the software, but only build the package, you can
151 use the <c>--buildpkgonly</c> option (<c>-B</c> in short):
152 </p>
153
154 <pre caption="Building a binary package for gnumeric">
155 # <i>emerge --buildpkgonly gnumeric</i>
156 </pre>
157
158 </body>
159 </subsection>
160 </section>
161 </sections>

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