ref-manual: Edits to PARALLEL_MAKE variable.
Added a note indicating that the variable might be cleared out if there are problems running Make. (From yocto-docs rev: 861921b86c48de2267ccd32ab3f3424a98eb8ed1) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -3751,14 +3751,24 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
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<glossentry id='var-PARALLEL_MAKE'><glossterm>PARALLEL_MAKE</glossterm>
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<glossentry id='var-PARALLEL_MAKE'><glossterm>PARALLEL_MAKE</glossterm>
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<glossdef>
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<glossdef>
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<para>Extra options that are passed to the
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<para>
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Extra options that are passed to the
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<filename>make</filename> command during the
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<filename>make</filename> command during the
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<filename>do_compile</filename> task in order to specify
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<filename>do_compile</filename> task in order to specify
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parallel compilation.
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parallel compilation.
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This variable is usually in the form <filename>-j 4</filename>, where the number
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This variable is usually in the form
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represents the maximum number of parallel threads make can run.
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<filename>-j 4</filename>, where the number
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If you development host supports multiple cores a good rule of thumb is to set
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represents the maximum number of parallel threads make can
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this variable to twice the number of cores on the host.</para>
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run.
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If you development host supports multiple cores a good
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rule of thumb is to set this variable to twice the number
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of cores on the host.
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<note>
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Individual recipes might clear out this variable if
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the software being built has problems running its
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<filename>make</filename> process in parallel.
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</note>
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</para>
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</glossdef>
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</glossdef>
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</glossentry>
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</glossentry>
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