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1<?xml version='1.0' encoding="UTF-8"?> 1<?xml version='1.0' encoding="UTF-8"?>
2<!DOCTYPE guide SYSTEM "/dtd/guide.dtd"> 2<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
3<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/distcc.xml,v 1.9 2003/10/12 17:38:25 swift Exp $ --> 3<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/distcc.xml,v 1.39 2006/12/24 17:54:01 nightmorph Exp $ -->
4 4
5<guide link="/doc/en/distcc.xml"> 5<guide link="/doc/en/distcc.xml">
6 6
7<title>Gentoo Distcc Documentation</title> 7<title>Gentoo Distcc Documentation</title>
8 8
9<author title="Author"> 9<author title="Author">
10 <mail link="lisa@gentoo.org">Lisa Seelye</mail> 10 <mail link="lisa@gentoo.org">Lisa Seelye</mail>
11</author> 11</author>
12
13<author title="Editor"> 12<author title="Editor">
14 <mail link="vapier@gentoo.org">Mike Frysinger</mail> 13 <mail link="vapier@gentoo.org">Mike Frysinger</mail>
15</author> 14</author>
16
17<author title="Editor"> 15<author title="Editor">
18 <mail link="erwin@gentoo.org">Erwin</mail> 16 <mail link="erwin@gentoo.org">Erwin</mail>
19</author> 17</author>
20 18<author title="Editor">
19 <mail link="swift@gentoo.org">Sven Vermeulen</mail>
20</author>
21<author title="Editor">
22 <mail link="pylon@gentoo.org">Lars Weiler</mail>
23</author>
21<author title="Reviewer"> 24<author title="Reviewer">
22 <mail link="swift@gentoo.org">Sven Vermeulen</mail>
23</author>
24
25<author title="Reviewer">
26 <mail link="blubber@gentoo.org">Tiemo Kieft</mail> 25 <mail link="blubber@gentoo.org">Tiemo Kieft</mail>
27</author> 26</author>
28 27
28<abstract>
29This document serves as a HOWTO for using distcc with Gentoo.
30</abstract>
31
32<!-- The content of this document is licensed under the CC-BY-SA license -->
33<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
29<license/> 34<license/>
30 35
31<version>1.2.4</version> 36<version>1.18</version>
32<date>October 12, 2003</date> 37<date>2006-12-24</date>
33
34<abstract>This document serves as a HOWTO for using distcc with Gentoo.</abstract>
35 38
36<chapter> 39<chapter>
37 <title>Introduction</title> 40<title>Introduction</title>
38 <section> 41<section>
39 <title>What is distcc?</title> 42<title>What is distcc?</title>
40 <body> 43<body>
41 <p>Distcc is a program designed to distribute compiling tasks across a network to participating hosts. It is comprised of a server, <c>distccd</c> and a client program, <c>distcc</c>. Distcc can work transparently with <uri link="http://ccache.samba.org">ccache</uri> and Portage with a little set up.</p> 44
45<p>
46Distcc is a program designed to distribute compiling tasks across a network to
47participating hosts. It is comprised of a server, <c>distccd</c>, and a client
48program, <c>distcc</c>. Distcc can work transparently with <uri
49link="http://ccache.samba.org">ccache</uri>, Portage, and Automake with a
50little setup.
51</p>
52
42 </body> 53</body>
43 </section> 54</section>
55<section>
56<title>Using distcc to bootstrap</title>
57<body>
58
59<p>
60If you are planning on using distcc to help you bootstrap a Gentoo
61installation, make sure you read the section <uri link="#bootstrapping">Using
62distcc to Bootstrap</uri>, which is situated further down in this document.
63</p>
64
65</body>
66</section>
44</chapter> 67</chapter>
45 68
46<chapter> 69<chapter>
47 <title>Setup</title> 70<title>Setup</title>
48 <section> 71<section>
49 <title>Dependencies</title> 72<title>Dependencies</title>
50 <body> 73<body>
51 <pre caption="Distcc dependencies (2.8 through 2.10)"> 74
52&gt;=sys-apps/portage-2.0.46-r11 75<p>
53<codenote>Distcc-2.11 and on require &gt;=sys-apps/portage-2.0.49-r6</codenote> 76In order to use Distcc, all of the computers on your network need to have the
54&gt;=sys-devel/gcc-config-1.3.1 77same GCC versions. For example, mixing 3.3.x (where the x varies) is okay, but
55sys-apps/shadow 78mixing 3.3.x with 3.2.x <b>may</b> result in compilation errors or runtime
56<codenote>(As of version 2.8 and up until 2.11) And the following optional dependencies when you have <i>gtk</i> in your <i>USE</i> flags</codenote> 79errors.
57&gt;=x11-libs/gtk+-2.2.1
58</pre> 80</p>
59 <pre caption="Distcc Dependencies (post 2.11.1)"> 81
60&gt;=sys-apps/portage-2.0.49-r6
61&gt;=sys-devel/gcc-config-1.3.1
62sys-apps/shadow
63<codenote>In this revision you may chose between a Gnome and GTK GUI monitor, they have the following added dependencies</codenote>
64<codenote>For GTK:</codenote>
65&gt;=x11-libs/gtk+-2.0.0
66&gt;=gnome-base/libglade-2.0.0
67x11-libs/pango
68<codenote>For Gnome:</codenote>
69&gt;=x11-libs/gtk+-2.0.0
70&gt;=gnome-base/libglade-2.0.0
71x11-libs/pango
72&gt;=gnome-base/libgnomeui-2.0.0.0
73&gt;=gnome-base/libgnome-2.0.0
74</pre>
75 </body>
76 </section>
77 <section>
78 <title>Installing Distcc</title>
79 <body>
80 <p>Installing Distcc is very easy. Simply set your USE flags and <i>emerge distcc</i>. But, there's a couple of options you should know about.</p>
81 <p>Distcc ships with a graphical monitor to monitor tasks that your computer is sending away for compilation. If you use Gnome then put 'gnome' in your USE flags. However, if you don't use Gnome and would still like to have the monitor then you should put 'gtk' in your USE flags.</p>
82 </body> 82</body>
83 </section> 83</section>
84 <section> 84<section>
85<title>Installing Distcc</title>
86<body>
87
88<p>
89There are a couple of options you should be aware of before you start
90installing distcc.
91</p>
92
93<p>
94Distcc ships with a graphical monitor to monitor tasks that your computer is
95sending away for compilation. If you use Gnome then put 'gnome' in your USE
96flags. However, if you don't use Gnome and would still like to have the
97monitor then you should put 'gtk' in your USE flags.
98</p>
99
100<pre caption="Installing distcc">
101# <i>emerge distcc</i>
102</pre>
103
104<impo>
105Remember, you must be sure to install distcc on all of your participating
106machines.
107</impo>
108
109</body>
110</section>
111<section>
85 <title>Setting up Portage to use Distcc</title> 112<title>Setting up Portage to use Distcc</title>
86 <body> 113<body>
87 <p>Setting up distcc is very easy to do with Portage. Follow these simple steps on each computer you want to use distcc on:</p> 114
115<p>
116Setting up Portage to use distcc is easy. Execute the following steps on
117each system that should participate in the distributed compiling:
118</p>
119
88 <pre caption="Integrating Distcc and Portage"> 120<pre caption="Integrating Distcc and Portage">
89# <i>emerge distcc</i> 121# <i>emerge distcc</i>
90# <i>nano -w /etc/make.conf</i> 122# <i>nano -w /etc/make.conf</i>
123<comment>(Set N to a suitable number for your particular setup)</comment>
124<comment>(A common strategy is setting N as twice the number of total CPUs + 1
125available)</comment>
126MAKEOPTS="-jN"
127<comment>(Add distcc to your FEATURES)</comment>
128FEATURES="distcc"
129</pre>
130
131</body>
132</section>
133<section>
134<title>Specifying Participating Hosts</title>
135<body>
136
137<p>
138Use the <c>distcc-config</c> command to set the list of hosts. Here is an
139example of some hosts that might be in your list:
91</pre> 140</p>
92 <impo>If you use distcc-2.11.1 or greater with &gt;=portage-2.0.49-r6, then all you need to do as far as setup is to set your hosts (see next code block), modify MAKEOPTS in <path>/etc/make.conf</path>, and add 'distcc' to FEATURES in <path>/etc/make.conf</path>.</impo>
93 <note>Edit your FEATURES flags to include &quot;distcc&quot;</note>
94 <note>You should also uncomment the PORTAGE_TMPDIR line in <path>/etc/make.conf</path>.</note>
95 <note>Set <i>DISTCC_DIR=${PORTAGE_TMPDIR}/portage/.distcc</i> near the end of the file (last line is okay)</note>
96 141
97 <p>Next you have to specify what hosts you want to use. To do this you can use the <c>distcc-config</c> command to set the list of hosts. Here is an example of some hosts that might be in your list:</p>
98 <pre caption="Examples of host definitions"> 142<pre caption="Examples of host definitions">
99192.168.0.1 192.168.0.2 192.168.0.3 143192.168.0.1 192.168.0.2 192.168.0.3
100192.168.0.1/2 192.168.0.2 192.168.0.3/10 144192.168.0.1/2 192.168.0.2 192.168.0.3/10
101192.168.0.1:4000/2 192.168.0.2/1 192.168.0.3:3632/4 145192.168.0.1:4000/2 192.168.0.2/1 192.168.0.3:3632/4
102@192.168.0.1 @192.168.0.2:/usr/bin/distccd 192.168.0.3 146@192.168.0.1 @192.168.0.2:/usr/bin/distccd 192.168.0.3
147<comment>(There are also several other methods of setting up hosts. See the
148distcc manpage for more details.)</comment>
149<comment>If you wish to compile on the local machine you should put 'localhost'
150in the hosts list. Conversely if you do not wish to use the local machine to
151compile (which is often the case) omit it from the hosts list. On a slow
152machine using localhost may actually slow things down. Make sure to test your
153settings for performance.</comment>
154</pre>
155
156<p>
157It may all look complicated, but in most cases a variant of line 1 or 2 will
158work.
103</pre> 159</p>
104 <p>It may all look complicated, but in most cases a variant of line 1 or 2 will work. An explanation of each line is: Line 1 is just a space-delimited list of hosts that will use default everything. Line 2 is a list of hosts that specifies the maximum number of jobs (by use of the /N) to send that host at any given time (specified with the <c>/n</c>). Since most people won't be using lines 3 or 4, I'll <uri link="http://distcc.samba.org/man/distcc_1.html">point you to</uri> the distcc docs for more information.</p> 160
105 <p>A sample command to set the hosts (for line 1) is:</p> 161<p>
162Since most people won't be using lines 3 or 4, I'll <uri
163link="http://distcc.samba.org/man/distcc_1.html">refer to</uri> the distcc
164docs (man distcc) for more information.
165</p>
166
167<p>
168For instance, to set the first line in the previous example:
169</p>
170
106 <pre caption="Sample command to set the hosts"> 171<pre caption="Sample command to set the hosts">
107# <i>/usr/bin/distcc-config --set-hosts "192.168.0.1 192.168.0.2 192.168.0.3"</i> 172# <i>/usr/bin/distcc-config --set-hosts "192.168.0.1 192.168.0.2 192.168.0.3"</i>
108</pre> 173</pre>
109 174
110 <p>The final step to integrating distcc into Portage is to re-open your <path>/etc/make.conf</path> and edit <c>MAKEOPTS</c> to include <c>-jN</c> (where N is an integer). Typically you will want to set this to the total number of processors in your network plus one.</p> 175<p>
111 <pre caption="Final steps in make.conf"> 176Edit <path>/etc/conf.d/distccd</path> to your needs and be sure to set the
177<c>--allow</c> directive to allow only hosts you trust. For added security,
178you should also use the <c>--listen</c> directive to tell the distcc daemon
179what IP to listen on (for multi-homed systems). More information on distcc
180security can be found at <uri
181link="http://distcc.samba.org/security.html">Distcc Security Design</uri>.
182</p>
183
184<impo>
185It is important to use --allow and --listen. Please read the distccd manpage
186or the above security document for more information.
187</impo>
188
189
190<p>
191Now start the distcc daemon on all the participating computers:
192</p>
193
194<pre caption="Starting the distcc daemon">
195<comment>(Add distccd to the default runlevel)</comment>
196# <i>rc-update add distccd default</i>
197<comment>(Start the distcc daemon)</comment>
198# <i>/etc/init.d/distccd start</i>
199</pre>
200
201</body>
202</section>
203<section>
204<title>Setting up Distcc to Work With Automake</title>
205<body>
206
207<p>
208This is, in some cases, easier than the Portage setup. What you have to do is
209update your <c>PATH</c> variable to include <path>/usr/lib/distcc/bin</path>
210in front of the directory that contains <c>gcc</c> (<path>/usr/bin</path>).
211However, there is a caveat. If you use ccache you have to put distcc after
212the ccache part:
213</p>
214
215<pre caption="Setting your path">
216# <i>export PATH="/usr/lib/ccache/bin:/usr/lib/distcc/bin:${PATH}"</i>
217<comment>(You can put this in your ~/.bashrc or equivalent file to have the PATH
218set every time you log in)</comment>
219</pre>
220
221<p>
222Then, as you would normally type <c>make</c>, you would type <c>make -jN</c>
223(where N is an integer). The value of N depends on your network and the types
224of computers you are using to compile. Test your own settings to find the
225number that yields the best performance.
226</p>
227
228</body>
229</section>
230</chapter>
231
232<chapter>
233<title>Cross-Compiling</title>
234<section>
235<body>
236
237<p>
238Cross-compiling is using one architecture to build programs for another
239architecture. This can be as simple as using an Athlon (i686) to build a
240program for a K6-2 (i586), or using a Sparc to build a program for a ppc. This
241is documented in our <uri link="/doc/en/cross-compiling-distcc.xml">DistCC
242Cross-compiling Guide</uri>.
243</p>
244
245</body>
246</section>
247</chapter>
248
249<chapter id="bootstrapping">
250<title>Using Distcc to Bootstrap</title>
251<section>
252<title>Step 1: Configure Portage</title>
253<body>
254<!--
255Note that this will need to become a link to the old 2005.1 networked handbooks
256once the 2006.0 handbooks are released. Until then, the link can stay.
257-->
258<p>
259Boot your new box with a Gentoo Linux LiveCD and follow the <uri
260link="/doc/en/handbook/handbook-x86.xml?part=1">installation instructions</uri>
261up until the bootstrapping part. (See the <uri
262link="/doc/en/faq.xml#stage12">Gentoo FAQ</uri> for more information about
263bootstrapping.) Then configure Portage to use distcc:
264</p>
265
266<pre caption="Preliminary Setup">
112# <i>nano -w /etc/make.conf</i> 267# <i>nano -w /etc/make.conf</i>
268<comment>(Add distcc to the FEATURES</comment>
269FEATURES="distcc"
270<comment>(Modify MAKEOPTS to include -jN, where N is twice the number of CPUs
271+1 available)</comment>
113MAKEOPTS=-jN 272MAKEOPTS="-jN"
114</pre> 273</pre>
115 <impo>Don't forget to start the distcc daemon! <c>/etc/init.d/distccd start</c></impo> 274
116 </body>
117 </section>
118 <section>
119 <title>Setting up Distcc to Work With Automake</title>
120 <body>
121 <p>This is in some cases easier than the Portage setup. What you have to do is update your <c>PATH</c> environmental variable to include <path>/usr/lib/distcc/bin</path> before where gcc (<path>/usr/bin</path>). However, there is a caveat. If you use ccache you have to put distcc after the ccache part. Like so:</p>
122 <pre caption="Setting your path"> 275<pre caption="Setting your path">
123# <i>export PATH="/usr/lib/ccache/bin:/usr/lib/distcc/bin:${PATH}"</i> 276# <i>export PATH="/usr/lib/ccache/bin:/usr/lib/distcc/bin:${PATH}"</i>
124</pre> 277</pre>
125 <p>Then, as you would normally type <c>make</c>, you would type <c>make -jN</c> (where N is an integer). A safe number to use for N varies on your network and the types of computers you are using to compile. For me, I have a dual processor P3 and a K6-2/400 that compile everything for my desktop (a 1200MHz Athlon Thunderbird) and I use -j5. Test your own settings to find the right number.</p> 278
126 </body> 279</body>
127 </section> 280</section>
281<section>
282<title>Step 2: Getting Distcc</title>
283<body>
284
285<p>
286Before the installation of distcc, a user called distcc must be added to the
287<path>/etc/passwd</path>:
288</p>
289
290<pre caption="Create user distcc">
291# <i>echo "distcc:x:240:2:distccd:/dev/null:/bin/false" &gt;&gt;/etc/passwd</i>
292</pre>
293
294<impo>
295It is important to note that adding users like this is very bad. We only do
296it here because there is no <c>useradd</c> utility (which you normally use for
297adding users) yet at this stage of installation.
298</impo>
299
300<p>
301Install distcc:
302</p>
303
304<pre caption="Getting Distcc on the new box">
305# <i>USE='-*' emerge --nodeps sys-devel/distcc</i>
306</pre>
307
308</body>
309</section>
310<section>
311<title>Step 3: Setting Up Distcc</title>
312<body>
313
314<p>
315Run <c>distcc-config --install</c> to setup distcc:
316</p>
317
318<pre caption="Final distcc setup">
319<comment>(Substitute host1, host2, ... with the IP number(s) of the
320participating hosts)</comment>
321# <i>/usr/bin/distcc-config --set-hosts "localhost host1 host2 host3 ..."</i>
322<comment>An example: <i>/usr/bin/distcc-config --set-hosts "localhost
323192.168.0.4 192.168.0.6"</i></comment>
324</pre>
325
326<p>
327Distcc is now set up to bootstrap! Continue with the official installation
328instructions and <e>do not forget</e> to re-emerge distcc after <c>emerge
329system</c>. This is to make sure that all of the dependencies you want are
330installed as well.
331</p>
332
333<note>
334During bootstrap and <c>emerge system</c> distcc may not appear to be used.
335This is expected as some ebuilds do not work well with distcc, so they
336intentionally disable it.
337</note>
338
339</body>
340</section>
128</chapter> 341</chapter>
129 342
130<chapter> 343<chapter>
131 <title>Cross-Compiling</title> 344<title>Troubleshooting</title>
132 <section> 345<section>
133 <title>A Note on Cross-Compiling</title> 346<title>Some Packages Don't Use Distcc</title>
134 <body> 347<body>
135 <p>Cross-compiling is using one architecture to build programs for another architecture. This can be as simple as using an Athlon (i686) to build a program for a K6-2 (i586), or using a Sparc to build a program for a ppc.</p> 348
349<p>
350As you emerge various packages, you'll notice that some of them aren't being
351distributed (and aren't being built in parallel). This may happen because the
352package's Makefile doesn't support parallel operations or the maintainer of the
353ebuild has explicitly disabled parallel operations due to a known problem.
354</p>
355
356<p>
357Sometimes distcc might cause a package to fail to compile. If this happens
358for you, please <uri link="http://bugs.gentoo.org">report</uri> it to us.
359</p>
360
136 </body> 361</body>
137 </section> 362</section>
138 <section> 363<section>
139 <title>A Personal Note on Cross-compiling</title> 364<title>Mixed GCC Versions</title>
140 <body> 365<body>
141 <p>I'd love to be able to help out on the Gentoo Cross-compiling effort, but I don't have any non-x86 machines. I can create things that work <e>in theory</e>, but I have to rely on other people to test what I write. That works to an extent, but it's tough. ;-)</p> 366
142 <p>In the near future I hope to acquire a Sparc of some type to put Gentoo on so I can play around in-house.</p> 367<p>
368If you have different GCC versions on your hosts, there will likely be very
369weird problems. The solution is to make certain all hosts have the same GCC
370version.
371</p>
372
373<p>
374Recent Portage updates have made Portage use <c>${CHOST}-gcc</c> instead of
375<c>gcc</c>. This means that if you're mixing i686 machines with other types
376(i386, i586) you will run into problems. A workaround for this may be to
377<c>export CC='gcc' CXX='c++'</c> or to put it in <path>/etc/make.conf</path>.
378</p>
379
380<impo>
381Doing this explicitly redefines some behaviour of Portage and may have some
382weird results in the future. Only do this if you're mixing CHOSTs.
383</impo>
384
385
143 </body> 386</body>
144 </section> 387</section>
145</chapter> 388</chapter>
146 389
147<chapter> 390<chapter>
148 <title>Using Distcc to Bootstrap</title>
149 <section>
150 <title>Step 1: Setup on New Box</title>
151 <body>
152 <p>Next, you have to boot your new box with a Gentoo Linux LiveCD and follow all of the steps up until the bootstrapping. Then proceed with a little preliminary setup on the new box.</p>
153 <pre caption="Preliminary Setup">
154<codenote>Here we add distcc to FEATURES</codenote>
155# <i>nano -w /etc/make.conf</i>
156<codenote>Add &quot;distcc&quot; to FEATURES</codenote>
157<codenote>Modify MAKEOPTS in <path>/etc/make.conf to include -jN (as described above)</path></codenote>
158</pre>
159 <p>Then add the distcc user to your <path>/etc/passwd</path>:</p>
160 <pre caption="Add the distcc user to /etc/passwd">
161# <i>echo "distcc:x:240:2:distccd:/dev/null:/bin/false" &gt;&gt;/etc/passwd</i>
162<codenote>Do not forget the `<i>&gt;&gt;</i>'</codenote>
163</pre>
164 </body>
165 </section>
166 <section>
167 <title>Step 2: Getting Distcc</title>
168 <body>
169 <p>Next you will want to issue the following command inside the chroot on the new box.</p>
170 <pre caption="Getting Distcc on the new box">
171# <i>emerge --nodeps distcc</i>
172</pre>
173 </body>
174 </section>
175 <section>
176 <title>Step 3: Setting Up Distcc Itself</title>
177 <body>
178 <p>Now set up distcc itself...</p>
179 <pre caption="Final distcc setup">
180# <i>/usr/bin/distcc-config --install</i>
181# <i>/usr/bin/distcc-config --set-hosts "localhost host1 host2 host3 ..."</i>
182</pre>
183 <p>distcc should be set up now to bootstrap! Continue the official install guide, and don't forget to re-emerge distcc after <c>emerge system</c>.</p>
184 </body>
185 </section>
186</chapter>
187
188<chapter>
189 <title>Troubleshooting</title>
190 <section>
191 <title>Mozilla and Xfree</title>
192 <body>
193 <p>As you emerge various packages, you'll notice that they aren't being distributed (and indeed aren't being built in parallel). This is because the developers of Mozilla and Xfree .ebuilds disabled parallel building because it is known to cause problems. This isn't necessarily a distcc problem.</p>
194 <p>That isn't to say that sometimes distcc will cause a package to fail to compile.</p>
195 </body>
196 </section>
197 <section>
198 <title>A Mixture of hardened-gcc and non-hardened-gcc Hosts Will Be Faulty</title>
199 <body>
200 <p>With such a long title any explanation here is almost irrelevent. However, if you plan to use distcc across hosts that have the <uri link="http://www.gentoo.org/proj/en/hardened/etdyn-ssp.xml">PaX/hardened-gcc</uri> and some that do not, you will run into problems.</p>
201 <p>The solution requires a little foresight on your part; you have to run <c>hardened-gcc -R</c> on the host that has PaX/hardened-gcc, or you have to enable PaX protections in your kernel and <c>emerge hardened-gcc</c>. Both of which are a good thing to do since for the most part the protections offered by both packages is a good thing and is transparent to the user.</p>
202 </body>
203 </section>
204 <section>
205 <title>Mixed GCC Versions</title>
206 <body>
207 <p>If you have differing versions of GCC on your hosts, there will likely be very weird problems. The solution is to make certain all hosts have the same GCC version.</p>
208 </body>
209 </section>
210</chapter>
211
212<chapter>
213 <title>Distcc Extras</title> 391<title>Distcc Extras</title>
214 <section> 392<section>
215 <title>Distcc Monitors</title> 393<title>Distcc Monitors</title>
216 <body> 394<body>
217 <p>Distcc ships with two monitors. The text-based one is always built, it is called <c>distccmon-text</c>. Running it for the first time can be a bit confusing, but it is really quite easy to use. If you run the program with no parameter it will run once. However, if you pass it a number it will update every N seconds, where N is the argument you passed.</p> 395
218 <p>The other monitor is only turned on if you enabled <c>gtk</c> or <c>gnome</c> in your <c>USE</c> flags. This one is GTK+ based and runs in an X environment, and it is quite lovely.</p> 396<p>
219 <p>There is a caveat to using these programs. If you want to monitor any emerge, you have to start the monitor like so:</p> 397Distcc ships with two monitors. The text-based one is always built and is
398called <c>distccmon-text</c>. Running it for the first time can be a bit
399confusing, but it is really quite easy to use. If you run the program with no
400parameter it will run once. However, if you pass it a number it will update
401every N seconds, where N is the argument you passed.
402</p>
403
404<p>
405The other monitor is only turned on if you enabled <c>gtk</c> or <c>gnome</c>
406in your <c>USE</c> flags. This one is GTK+ based, runs in an X environment
407and it is quite lovely. For Gentoo the GUI monitor has been called
408<c>distccmon-gui</c> for less confusion. Elsewhere it may be referred to as
409<c>distccmon-gnome</c>.
410</p>
411
220 <pre caption="Starting the monitors"> 412<pre caption="Starting the monitors">
413# <i>distccmon-text N</i>
414<comment>(Or)</comment>
415# <i>distccmon-gui</i>
416<comment>To monitor Portage's distcc usage you can use:</comment>
221# <i>DISTCC_DIR=/path/to/distccdir distccmon-text N</i> 417# <i>DISTCC_DIR="/var/tmp/portage/.distcc/" distccmon-text N</i>
222<codenote>Or you can start the graphical monitor...</codenote> 418<comment>(Or)</comment>
223# <i>DISTCC_DIR=/path/to/distccdir distccmon-gnome</i> 419# <i>DISTCC_DIR="/var/tmp/portage/.distcc/" distccmon-gui</i>
224</pre> 420</pre>
225 <impo>If you are using Portage and used the above example, this will be <c>DISTCC_DIR=/var/tmp/portage/.distcc</c>.</impo> 421
226 <note>If you aren't using Portage you do not need to specify DISTCC_DIR (i.e., just type distccmon-text N).</note> 422<impo>
423If your distcc directory is elsewhere, change the DISTCC_DIR variable
424accordingly.
425</impo>
426
227 </body> 427</body>
228 </section> 428</section>
229</chapter>
230
231<chapter> 429</chapter>
232 <title>Future Plans for Distcc and Gentoo</title>
233 <section>
234 <title>distcc-subnetscan</title>
235 <body>
236 <p><c>distcc-subnetscan</c> is a perl program in development that will scan a subnet for hosts that have a participating distcc daemon. Even this will be enhanced to test if the daemon on a remote host will conform to a specific <c>CHOST</c> setting to make cross-compiling easier.</p>
237 <p>The perl script is being kept at <uri link="http://dev.gentoo.org/~lisa/distcc/distcc-subnetscan/distcc-subnetscan.pl">right here</uri> until a more formal home can be found.</p>
238 </body>
239 </section>
240 <section>
241 <title>distcc-config</title>
242 <body>
243 <p><c>distcc-config</c>, the userland configuration tool for distcc is out of date. Soon it will be rewritten to be brought up the current version of distcc.</p>
244 </body>
245 </section>
246</chapter>
247
248</guide> 430</guide>

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