1# SPDX-License-Identifier: GPL-2.0 2# 3# This is a simple wrapper Makefile that calls the main Makefile.perf 4# with a -j option to do parallel builds 5# 6# If you want to invoke the perf build in some non-standard way then 7# 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 MAKEFLAGS 20 21# 22# Do a parallel build with multiple jobs, based on the number of CPUs online 23# 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 := 1 31 endif 32endif 33 34# 35# Only pass canonical directory names as the output directory: 36# 37ifneq ($(O),) 38 FULL_O := $(shell cd $(PWD); readlink -f $(O) || echo $(O)) 39endif 40 41# 42# Only accept the 'DEBUG' variable from the command line: 43# 44ifeq ("$(origin DEBUG)", "command line") 45 ifeq ($(DEBUG),) 46 override DEBUG = 0 47 else 48 SET_DEBUG = "DEBUG=$(DEBUG)" 49 endif 50else 51 override DEBUG = 0 52endif 53 54ifeq ($(JOBS),1) 55 BUILD_TYPE := sequential 56else 57 BUILD_TYPE := parallel 58endif 59 60define print_msg 61 @printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' $(BUILD_TYPE) build\n' 62endef 63 64define make 65 @$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) O=$(FULL_O) $(SET_DEBUG) $@ 66endef 67 68# 69# Needed if no target specified: 70# (Except for tags and TAGS targets. The reason is that the 71# Makefile does not treat tags/TAGS as targets but as files 72# and thus won't rebuilt them once they are in place.) 73# 74all tags TAGS: 75 $(print_msg) 76 $(make) 77 78ifdef MAKECMDGOALS 79has_clean := 0 80ifneq ($(filter clean,$(MAKECMDGOALS)),) 81 has_clean := 1 82endif # clean 83 84ifeq ($(has_clean),1) 85 rest := $(filter-out clean,$(MAKECMDGOALS)) 86 ifneq ($(rest),) 87$(rest): clean 88 endif # rest 89endif # has_clean 90endif # MAKECMDGOALS 91 92# 93# Explicitly disable parallelism for the clean target. 94# 95clean: 96 $(make) -j1 97 98# 99# The build-test target is not really parallel, don't print the jobs info, 100# it also uses only the tests/make targets that don't pollute the source 101# repository, i.e. that uses O= or builds the tarpkg outside the source 102# repo directories. 103# 104# For a full test, use: 105# 106# make -C tools/perf -f tests/make 107# 108build-test: 109 @$(MAKE) SHUF=1 -f tests/make REUSE_FEATURES_DUMP=1 MK=Makefile SET_PARALLEL=1 --no-print-directory tarpkg make_static make_with_gtk2 out 110 111build-test-tarball: 112 @$(MAKE) -f tests/make REUSE_FEATURES_DUMP=1 MK=Makefile SET_PARALLEL=1 --no-print-directory out 113 114# 115# All other targets get passed through: 116# 117%: FORCE 118 $(print_msg) 119 $(make) 120 121.PHONY: tags TAGS FORCE Makefile 122