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Clarify alias/usage-requirements

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[SVN r25814]
This commit is contained in:
Vladimir Prus
2004-10-21 07:05:39 +00:00
parent 93f3c9c3a9
commit e8e4dbc96d
1 changed files with 21 additions and 2 deletions
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23
v2/doc/src/advanced.xml
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@@ -910,7 +910,8 @@ lib a : a.cpp : <use>b : : <library>b ;
<programlisting>
alias core : im reader writer ;
</programlisting>
The sources are returned without any modification.
will build the sources and return the generated source targets
without modification.
</para>
<para>
@@ -927,7 +928,25 @@ alias core : im reader writer ;
alias boost_thread : /boost/thread//boost_thread : &lt;link&gt;static ;
</programlisting>
and use only the <code>boost_thread</code> alias in your Jamfiles.
</para>
</para>
<para>
It is also allowed to specify usage requirements for the
<code>alias</code> target. If you write the following:
<programlisting>
alias header_only_library : : : : &lt;include&gt;/usr/include/header_only_library ;
</programlisting>
then using <code>header_only_library</code> in sources will only add an
include path. Also note that when there are some sources, their usage
requirements are propagated, too. For example:
<programlisting>
lib lib : lib.cpp : : : &lt;include&gt;. ;
alias lib_alias ;
exe main : main.cpp lib_alias ;
</programlisting>
will compile <filename>main.cpp</filename> with the additional include.
</para>
</section>