a752c7ab
elopes
add first test an...
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ifneq (, $(filter buildtest info-concurrency, $(MAKECMDGOALS)))
ifeq (, $(strip $(NPROC)))
# Linux (utility program)
NPROC := $(shell nproc 2>/dev/null)
ifeq (, $(strip $(NPROC)))
# Linux (generic)
NPROC := $(shell grep -c ^processor /proc/cpuinfo 2>/dev/null)
endif
ifeq (, $(strip $(NPROC)))
# BSD (at least FreeBSD and Mac OSX)
NPROC := $(shell sysctl -n hw.ncpu 2>/dev/null)
endif
ifeq (, $(strip $(NPROC)))
# Fallback
NPROC := 1
endif
NPROC := $(shell echo $$(($(NPROC) + 1)))
ifneq (, $(NPROC_MAX))
NPROC := $(shell if [ ${NPROC} -gt $(NPROC_MAX) ]; then echo $(NPROC_MAX); else echo ${NPROC}; fi)
endif
ifneq (, $(NPROC_MIN))
NPROC := $(shell if [ ${NPROC} -lt $(NPROC_MIN) ]; then echo $(NPROC_MIN); else echo ${NPROC}; fi)
endif
endif
endif
.PHONY: info-concurrency
info-concurrency:
@echo "$(NPROC)"
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