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ref-manual: Added ICECC_PARALLEL_MAKE to glossary.

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Fixes [YOCTO #5801]

First draft of this description.

(From yocto-docs rev: 412d0cc7dbb74ece45940c40fbb617217ab88d2d)

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
2014-02-13 13:21:35 -06:00
committed by Richard Purdie
parent 478f1b7afe
commit fdd99bcb11
1 changed files with 40 additions and 0 deletions
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40
documentation/ref-manual/ref-variables.xml
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@@ -2405,6 +2405,46 @@
</glossdef>
</glossentry>
<glossentry id='var-ICECC_PARALLEL_MAKE'><glossterm>ICECC_PARALLEL_MAKE</glossterm>
<glossdef>
<para>
Extra options passed to the <filename>make</filename>
command during the <filename>do_compile</filename> task
that specify parallel compilation.
This variable usually takes the form of
<filename>-j 4</filename>, where the number
represents the maximum number of parallel threads
<filename>make</filename> can run.
<note>
The options passed affect builds on all enabled
machines on the network, which are machines running the
<filename>iceccd</filename> daemon.
</note>
</para>
<para>
If your enabled machines support multiple cores,
coming up with the maximum number of parallel threads
that gives you the best performance could take some
experimentation since machine speed, network lag,
available memory, and existing machine loads can all
affect build time.
Consequently, unlike the
<link linkend='var-PARALLEL_MAKE'><filename>PARALLEL_MAKE</filename></link>
variable, there is no rule-of-thumb for setting
<filename>ICECC_PARALLEL_MAKE</filename> to achieve
optimal performance.
</para>
<para>
If you do not set <filename>ICECC_PARALLEL_MAKE</filename>,
the build system does not use it (i.e. the system does
not detect and assign the number of cores as is done with
<filename>PARALLEL_MAKE</filename>).
</para>
</glossdef>
</glossentry>
<glossentry id='var-ICECC_PATH'><glossterm>ICECC_PATH</glossterm>
<glossdef>
<para>