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local.conf.sample: Add automatic defaults for BB_NUMBER_THREADS and PARALLEL_MAKE

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Its rather sad that people don't appear to read local.conf and then complain
about slow builds when they're just using a single thread. Most systems have
more than one core now so we might as well use a more automatic default
for these values. This may lead to better experiences for new users.

[YOCTO #2528]

(From meta-yocto rev: 52bf4bdcaea0df69231327413d502aad11c3adf3)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie
2014-01-27 14:39:48 +00:00
parent ff1bdc1c8b
commit ecb9813900
1 changed files with 6 additions and 0 deletions
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meta-yocto/conf/local.conf.sample
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@@ -18,12 +18,18 @@
# option determines how many tasks bitbake should run in parallel:
#
#BB_NUMBER_THREADS ?= "4"
#
# Default to setting automatically based on cpu count
BB_NUMBER_THREADS ?= "${@oe.utils.cpu_count()}"
#
# The second option controls how many processes make should run in parallel when
# running compile tasks:
#
#PARALLEL_MAKE ?= "-j 4"
#
# Default to setting automatically based on cpu count
PARALLEL_MAKE ?= "-j ${@oe.utils.cpu_count()}"
#
# For a quad-core machine, BB_NUMBER_THREADS = "4", PARALLEL_MAKE = "-j 4" would
# be appropriate for example.