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authorScott Rifenbark <scott.m.rifenbark@intel.com>2013-09-23 10:21:59 -0700
committerRichard Purdie <richard.purdie@linuxfoundation.org>2013-10-01 22:52:52 +0100
commit0f902628faf203e7a40748aac622b24c31685c25 (patch)
tree3f50d4a5f8f0d8ebc31175cab0c404def7b4e6eb /documentation/ref-manual/ref-variables.xml
parent45ace75bbf37b358a8c9ffc3398a93b374dc8c03 (diff)
downloadpoky-0f902628faf203e7a40748aac622b24c31685c25.tar.gz
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>
Diffstat (limited to 'documentation/ref-manual/ref-variables.xml')
-rw-r--r--documentation/ref-manual/ref-variables.xml20
1 files changed, 15 insertions, 5 deletions
diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 5f82602f1d..1f49351f6e 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -3751,14 +3751,24 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
3751 3751
3752 <glossentry id='var-PARALLEL_MAKE'><glossterm>PARALLEL_MAKE</glossterm> 3752 <glossentry id='var-PARALLEL_MAKE'><glossterm>PARALLEL_MAKE</glossterm>
3753 <glossdef> 3753 <glossdef>
3754 <para>Extra options that are passed to the 3754 <para>
3755 Extra options that are passed to the
3755 <filename>make</filename> command during the 3756 <filename>make</filename> command during the
3756 <filename>do_compile</filename> task in order to specify 3757 <filename>do_compile</filename> task in order to specify
3757 parallel compilation. 3758 parallel compilation.
3758 This variable is usually in the form <filename>-j 4</filename>, where the number 3759 This variable is usually in the form
3759 represents the maximum number of parallel threads make can run. 3760 <filename>-j 4</filename>, where the number
3760 If you development host supports multiple cores a good rule of thumb is to set 3761 represents the maximum number of parallel threads make can
3761 this variable to twice the number of cores on the host.</para> 3762 run.
3763 If you development host supports multiple cores a good
3764 rule of thumb is to set this variable to twice the number
3765 of cores on the host.
3766 <note>
3767 Individual recipes might clear out this variable if
3768 the software being built has problems running its
3769 <filename>make</filename> process in parallel.
3770 </note>
3771 </para>
3762 </glossdef> 3772 </glossdef>
3763 </glossentry> 3773 </glossentry>
3764 3774