1# 2# Do a parallel build with multiple jobs, based on the number of CPUs online 3# in this system: 'make -j8' on a 8-CPU system, etc. 4# 5# (To override it, run 'make JOBS=1' and similar.) 6# 7ifeq ($(JOBS),) 8 JOBS := $(shell grep -c ^processor /proc/cpuinfo 2>/dev/null) 9 ifeq ($(JOBS),) 10 JOBS := 1 11 endif 12endif 13 14export JOBS 15 16define print_msg 17 @printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' parallel build\n' 18endef 19 20define make 21 @$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) $@ 22endef 23 24# 25# Needed if no target specified: 26# 27all: 28 $(print_msg) 29 $(make) 30 31# 32# The clean target is not really parallel, don't print the jobs info: 33# 34clean: 35 $(make) 36 37# 38# All other targets get passed through: 39# 40%: 41 $(print_msg) 42 $(make) 43