1 # SPDX-License-Identifier: GPL-2.0 << 2 # 1 # 3 # This is a simple wrapper Makefile that calls 2 # This is a simple wrapper Makefile that calls the main Makefile.perf 4 # with a -j option to do parallel builds 3 # with a -j option to do parallel builds 5 # 4 # 6 # If you want to invoke the perf build in some 5 # If you want to invoke the perf build in some non-standard way then 7 # you can use the 'make -f Makefile.perf' meth 6 # you can use the 'make -f Makefile.perf' method to invoke it. 8 # 7 # 9 8 10 # 9 # 11 # Clear out the built-in rules GNU make define 10 # Clear out the built-in rules GNU make defines by default (such as .o targets), 12 # so that we pass through all targets to Makef 11 # so that we pass through all targets to Makefile.perf: 13 # 12 # 14 .SUFFIXES: 13 .SUFFIXES: 15 14 16 # 15 # 17 # We don't want to pass along options like -j: 16 # We don't want to pass along options like -j: 18 # 17 # 19 unexport MAKEFLAGS 18 unexport MAKEFLAGS 20 19 21 # 20 # 22 # Do a parallel build with multiple jobs, base 21 # 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 22 # in this system: 'make -j8' on a 8-CPU system, etc. 24 # 23 # 25 # (To override it, run 'make JOBS=1' and simil 24 # (To override it, run 'make JOBS=1' and similar.) 26 # 25 # 27 ifeq ($(JOBS),) 26 ifeq ($(JOBS),) 28 JOBS := $(shell (getconf _NPROCESSORS_ONLN | !! 27 JOBS := $(shell (getconf _NPROCESSORS_ONLN || egrep -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null) 29 ifeq ($(JOBS),0) 28 ifeq ($(JOBS),0) 30 JOBS := 1 29 JOBS := 1 31 endif 30 endif 32 endif 31 endif 33 32 34 # 33 # 35 # Only pass canonical directory names as the o 34 # Only pass canonical directory names as the output directory: 36 # 35 # 37 ifneq ($(O),) 36 ifneq ($(O),) 38 FULL_O := $(shell cd $(PWD); readlink -f $(O !! 37 FULL_O := $(shell readlink -f $(O) || echo $(O)) 39 endif 38 endif 40 39 41 # 40 # 42 # Only accept the 'DEBUG' variable from the co 41 # Only accept the 'DEBUG' variable from the command line: 43 # 42 # 44 ifeq ("$(origin DEBUG)", "command line") 43 ifeq ("$(origin DEBUG)", "command line") 45 ifeq ($(DEBUG),) 44 ifeq ($(DEBUG),) 46 override DEBUG = 0 45 override DEBUG = 0 47 else 46 else 48 SET_DEBUG = "DEBUG=$(DEBUG)" 47 SET_DEBUG = "DEBUG=$(DEBUG)" 49 endif 48 endif 50 else 49 else 51 override DEBUG = 0 50 override DEBUG = 0 52 endif 51 endif 53 52 54 ifeq ($(JOBS),1) << 55 BUILD_TYPE := sequential << 56 else << 57 BUILD_TYPE := parallel << 58 endif << 59 << 60 define print_msg 53 define print_msg 61 @printf ' BUILD: Doing '\''make \033[33m- !! 54 @printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' parallel build\n' 62 endef 55 endef 63 56 64 define make 57 define make 65 @$(MAKE) -f Makefile.perf --no-print-directo 58 @$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) O=$(FULL_O) $(SET_DEBUG) $@ 66 endef 59 endef 67 60 68 # 61 # 69 # Needed if no target specified: 62 # Needed if no target specified: 70 # (Except for tags and TAGS targets. The reaso 63 # (Except for tags and TAGS targets. The reason is that the 71 # Makefile does not treat tags/TAGS as targets 64 # Makefile does not treat tags/TAGS as targets but as files 72 # and thus won't rebuilt them once they are in 65 # and thus won't rebuilt them once they are in place.) 73 # 66 # 74 all tags TAGS: 67 all tags TAGS: 75 $(print_msg) 68 $(print_msg) 76 $(make) 69 $(make) 77 70 78 ifdef MAKECMDGOALS 71 ifdef MAKECMDGOALS 79 has_clean := 0 72 has_clean := 0 80 ifneq ($(filter clean,$(MAKECMDGOALS)),) 73 ifneq ($(filter clean,$(MAKECMDGOALS)),) 81 has_clean := 1 74 has_clean := 1 82 endif # clean 75 endif # clean 83 76 84 ifeq ($(has_clean),1) 77 ifeq ($(has_clean),1) 85 rest := $(filter-out clean,$(MAKECMDGOALS)) 78 rest := $(filter-out clean,$(MAKECMDGOALS)) 86 ifneq ($(rest),) 79 ifneq ($(rest),) 87 $(rest): clean 80 $(rest): clean 88 endif # rest 81 endif # rest 89 endif # has_clean 82 endif # has_clean 90 endif # MAKECMDGOALS 83 endif # MAKECMDGOALS 91 84 92 # 85 # 93 # Explicitly disable parallelism for the clean !! 86 # The clean target is not really parallel, don't print the jobs info: 94 # 87 # 95 clean: 88 clean: 96 $(make) -j1 !! 89 $(make) 97 90 98 # 91 # 99 # The build-test target is not really parallel 92 # The build-test target is not really parallel, don't print the jobs info, 100 # it also uses only the tests/make targets tha 93 # it also uses only the tests/make targets that don't pollute the source 101 # repository, i.e. that uses O= or builds the 94 # repository, i.e. that uses O= or builds the tarpkg outside the source 102 # repo directories. 95 # repo directories. 103 # 96 # 104 # For a full test, use: 97 # For a full test, use: 105 # 98 # 106 # make -C tools/perf -f tests/make 99 # make -C tools/perf -f tests/make 107 # 100 # 108 build-test: 101 build-test: 109 @$(MAKE) SHUF=1 -f tests/make REUSE_FE !! 102 @$(MAKE) SHUF=1 -f tests/make REUSE_FEATURES_DUMP=1 MK=Makefile SET_PARALLEL=1 --no-print-directory tarpkg out 110 << 111 build-test-tarball: << 112 @$(MAKE) -f tests/make REUSE_FEATURES_ << 113 103 114 # 104 # 115 # All other targets get passed through: 105 # All other targets get passed through: 116 # 106 # 117 %: FORCE 107 %: FORCE 118 $(print_msg) 108 $(print_msg) 119 $(make) 109 $(make) 120 110 121 .PHONY: tags TAGS FORCE Makefile 111 .PHONY: tags TAGS FORCE Makefile
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.