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docker: pass number of jobs from MAKEFLAGS to the container

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This commit is contained in:
Koen Zandberg 2020-10-09 14:43:42 +02:00
parent 86f72b717c
commit f2a719ba3c
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1 changed files with 10 additions and 0 deletions
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10
makefiles/docker.inc.mk
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@ -104,6 +104,16 @@ DOCKER_MAKE_ARGS ?=
# https://github.com/docker/for-mac/issues/2396
ETC_LOCALTIME = $(realpath /etc/localtime)
# Fetch the number of jobs from the MAKEFLAGS
# With $MAKE_VERSION < 4.2, the amount of parallelism is not available in
# $MAKEFLAGS, only that parallelism is requested. So only -j, even if
# something like -j3 is specified. This can be unexpected and dangerous
# in older make so don't enable parallelism if $MAKE_VERSION < 4.2
MAKE_JOBS_NEEDS = 4.1.999
MAKE_VERSION_OK = $(call memoized,MAKE_VERSION_OK,$(call \
version_is_greater,$(MAKE_VERSION),$(MAKE_JOBS_NEEDS)))
DOCKER_MAKE_JOBS = $(if $(MAKE_VERSION_OK),$(filter -j%,$(MAKEFLAGS)),)
DOCKER_MAKE_ARGS += $(DOCKER_MAKE_JOBS)
# # # # # # # # # # # # # # # #
# Directory mapping functions #