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ref-manual: Updated the RDEPENDS variable to include syntax 

Fixes [YOCTO #4987]

This variable supports some boolean operators that we are not
showing for supporting versioned dependencies.  I added the
explanation for them.  There will be other variables affected
later once we settle on the changes here.

(From yocto-docs rev: e5c1e66d670c708012bd5ab51aa94f87426f57e2)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark 2013-09-17 16:07:56 -07:00 committed by Richard Purdie
parent 9cef06f693
commit 33ed042d4f
1 changed files with 26 additions and 0 deletions
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documentation/ref-manual/ref-variables.xml
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@ -4132,6 +4132,32 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
</itemizedlist>
</para>
<para>
BitBake, which the OpenEmbedded build system uses, supports
specifying versioned dependencies.
Although the syntax varies depending on the packaging
format, BitBake hides these differences from you.
Here is the general syntax to specify versions with
the <filename>RDEPENDS</filename> variable:
<literallayout class='monospaced'>
RDEPENDS_${PN} = "&lt;package&gt; (&lt;operator&gt; &lt;version&gt;)"
</literallayout>
For <filename>operator</filename>, you can specify the
following:
<literallayout class='monospaced'>
=
&lt;
&gt;
&lt;=
&gt;=
</literallayout>
For example, the following sets up a dependency on version
1.2 or greater of the package <filename>foo</filename>:
<literallayout class='monospaced'>
RDEPENDS_${PN} = "foo (>= 1.2)"
</literallayout>
</para>
<para>
For information on build-time dependencies, see the
<link linkend='var-DEPENDS'><filename>DEPENDS</filename></link>