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docs/buildroot.html: document Makefile wrapper in output dir

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For out-of-tree builds.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Peter Korsgaard 2010-09-27 22:26:15 +02:00
parent 677ae6f6a5
commit 1110062e46
1 changed files with 16 additions and 1 deletions
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docs/buildroot.html
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@ -278,15 +278,30 @@ or
$ make O=/tmp/build $ make O=/tmp/build
</pre> </pre>
<p>Or:</p>
<pre>
$ cd /tmp/build; make O=$PWD -C path/to/buildroot
</pre>
<p>All the output files will be located under <p>All the output files will be located under
<code>/tmp/build</code>.</p> <code>/tmp/build</code>.</p>
<p>When using out-of-tree builds, the Buildroot <p>When using out-of-tree builds, the Buildroot
<code>.config</code> and temporary files are also stored in the <code>.config</code> and temporary files are also stored in the
output directory. This means that you can safely run multiple output directory. This means that you can safely run multiple
builds in parallel using the same source tree as long as they use builds in parallel using the same source tree as long as they use
unique output directories.</p> unique output directories.</p>
<p>For ease of use, Buildroot generates a Makefile wrapper in the
output directory - So after the first run, you no longer need to
pass <code>O=..</code> and <code>-C ..</code>, simply run (in the
output directory):</p>
<pre>
$ make &lt;target&gt;
</pre>
<h3><a name="environment_variables" id="environment_variables"></a> <h3><a name="environment_variables" id="environment_variables"></a>
Environment variables</h3> Environment variables</h3>