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Reduce number of parallel builds

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With recent introduction of C++ code required memory for each compiler
instance has significantly increased causing build issues.

Currently build system spins 2 compiler instances per logical CPU core.

As CPU can hardly execute more than one thread at a time, it should be
pretty safe to change that formula so it doesn't multiply number of cpu
cores by 2 and such change will signifucantly reduce amount of memory
needed.

Change-Id: Ic829fff6e45f4caf98a6d9c1c98c53ed003039ef
Signed-off-by: Damjan Marion <damarion@cisco.com>
This commit is contained in:
Damjan Marion
2017-11-13 20:09:21 +01:00
parent 04f3db3847
commit 9324284af8
2 changed files with 2 additions and 2 deletions
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build-root/Makefile
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@@ -644,7 +644,7 @@ configure_check_timestamp = \
# NB: GNU Make 4.2 will let us use '$(file </proc/cpuinfo)' to both test
# for file presence and content; for now this will have to do.
MAKE_PARALLEL_JOBS = -j $(if $(shell [ -f /proc/cpuinfo ] && head /proc/cpuinfo), \
$(shell expr 2 '*' $$(grep -c ^processor /proc/cpuinfo)), 2)
$(shell grep -c ^processor /proc/cpuinfo), 2)
MAKE_PARALLEL_FLAGS = $(if $($(PACKAGE)_make_parallel_fails),,$(MAKE_PARALLEL_JOBS))
# Make command shorthand for packages & tools.