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