auto_index/doc/html/boost_autoindex/tut/configure/optional.html

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<a name="boost_autoindex.tut.configure.optional"></a><a class="link" href="optional.html" title="Making AutoIndex optional">Making AutoIndex
optional</a>
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<p>
It is considerate to make the <span class="bold"><strong>use of auto-index optional</strong></span>
in Boost.Build, to allow users who do not have AutoIndex installed to still
be able to build your documentation.
</p>
<p>
This also very convenient while you are refining your documentation, to
allow you to decide to build indexes, or not: building indexes can take
long time, if you are just correcting typos, you won't want to wait while
you keep rebuilding the index!
</p>
<p>
One method of setting up optional AutoIndex support is to place all AutoIndex
configuration in a the body of a bjam if statement:
</p>
<pre class="programlisting">if --enable-index in [ modules.peek : ARGV ]
{
ECHO "Building the docs with automatic index generation enabled." ;
using auto-index ;
project : requirements
&lt;auto-index&gt;on
&lt;auto-index-script&gt;index.idx
... other AutoIndex options here...
# And tell Quickbook that it should enable indexing.
&lt;quickbook-define&gt;enable_index
;
}
else
{
ECHO "Building the my_library docs with automatic index generation disabled. To get an Index, try building with --enable-index." ;
}
</pre>
<p>
You will also need to add a conditional statement at the end of your Quickbook
file, so that the index(es) is/are only added after the last section if
indexing is enabled.
</p>
<pre class="programlisting">[? enable_index
'''
&lt;index/&gt;
'''
]
</pre>
<p>
To use this jamfile, you need to cd to your docs folder, for example:
</p>
<pre class="programlisting"><span class="identifier">cd</span> <span class="special">\</span><span class="identifier">boost</span><span class="special">-</span><span class="identifier">sandbox</span><span class="special">\</span><span class="identifier">guild</span><span class="special">\</span><span class="identifier">mylibrary</span><span class="special">\</span><span class="identifier">libs</span><span class="special">\</span><span class="identifier">mylibrary</span><span class="special">\</span><span class="identifier">doc</span>
</pre>
<p>
and then run <code class="computeroutput"><span class="identifier">bjam</span></code> to build
the docs without index, for example:
</p>
<pre class="programlisting"><span class="identifier">bjam</span> <span class="special">-</span><span class="identifier">a</span> <span class="identifier">html</span> <span class="special">&gt;</span> <span class="identifier">mylibrary_html</span><span class="special">.</span><span class="identifier">log</span>
</pre>
<p>
or with index(es)
</p>
<pre class="programlisting"><span class="identifier">bjam</span> <span class="special">-</span><span class="identifier">a</span> <span class="identifier">html</span> <span class="special">--</span><span class="identifier">enable</span><span class="special">-</span><span class="identifier">index</span> <span class="special">&gt;</span> <span class="identifier">mylibrary_html_index</span><span class="special">.</span><span class="identifier">log</span>
</pre>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2008, 2011 John Maddock<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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