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1# SPDX-License-Identifier: GPL-2.02#3# This is a simple wrapper Makefile that calls the main Makefile.perf4# with a -j option to do parallel builds5#6# If you want to invoke the perf build in some non-standard way then7# you can use the 'make -f Makefile.perf' method to invoke it.8#9 10#11# Clear out the built-in rules GNU make defines by default (such as .o targets),12# so that we pass through all targets to Makefile.perf:13#14.SUFFIXES:15 16#17# We don't want to pass along options like -j:18#19unexport MAKEFLAGS20 21#22# Do a parallel build with multiple jobs, based on the number of CPUs online23# in this system: 'make -j8' on a 8-CPU system, etc.24#25# (To override it, run 'make JOBS=1' and similar.)26#27ifeq ($(JOBS),)28 JOBS := $(shell (getconf _NPROCESSORS_ONLN || grep -E -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)29 ifeq ($(JOBS),0)30 JOBS := 131 endif32endif33 34#35# Only pass canonical directory names as the output directory:36#37ifneq ($(O),)38 FULL_O := $(shell cd $(PWD); readlink -f $(O) || echo $(O))39endif40 41#42# Only accept the 'DEBUG' variable from the command line:43#44ifeq ("$(origin DEBUG)", "command line")45 ifeq ($(DEBUG),)46 override DEBUG = 047 else48 SET_DEBUG = "DEBUG=$(DEBUG)"49 endif50else51 override DEBUG = 052endif53 54ifeq ($(JOBS),1)55 BUILD_TYPE := sequential56else57 BUILD_TYPE := parallel58endif59 60define print_msg61 @printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' $(BUILD_TYPE) build\n'62endef63 64define make65 @$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) O=$(FULL_O) $(SET_DEBUG) $@66endef67 68#69# Needed if no target specified:70# (Except for tags and TAGS targets. The reason is that the71# Makefile does not treat tags/TAGS as targets but as files72# and thus won't rebuilt them once they are in place.)73#74all tags TAGS:75 $(print_msg)76 $(make)77 78ifdef MAKECMDGOALS79has_clean := 080ifneq ($(filter clean,$(MAKECMDGOALS)),)81 has_clean := 182endif # clean83 84ifeq ($(has_clean),1)85 rest := $(filter-out clean,$(MAKECMDGOALS))86 ifneq ($(rest),)87$(rest): clean88 endif # rest89endif # has_clean90endif # MAKECMDGOALS91 92#93# Explicitly disable parallelism for the clean target.94#95clean:96 $(make) -j197 98#99# The build-test target is not really parallel, don't print the jobs info,100# it also uses only the tests/make targets that don't pollute the source101# repository, i.e. that uses O= or builds the tarpkg outside the source102# repo directories.103#104# For a full test, use:105#106# make -C tools/perf -f tests/make107#108build-test:109 @$(MAKE) SHUF=1 -f tests/make REUSE_FEATURES_DUMP=1 MK=Makefile SET_PARALLEL=1 --no-print-directory tarpkg make_static make_with_gtk2 out110 111build-test-tarball:112 @$(MAKE) -f tests/make REUSE_FEATURES_DUMP=1 MK=Makefile SET_PARALLEL=1 --no-print-directory out113 114#115# All other targets get passed through:116#117%: FORCE118 $(print_msg)119 $(make)120 121.PHONY: tags TAGS FORCE Makefile122