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 cd $(PWD); 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 # Explicitly disable parallelism for the clean target.
94 # 87 #
95 clean: 88 clean:
96 $(make) -j1 89 $(make) -j1
97 90
98 # 91 #
99 # The build-test target is not really parallel 92 # The build-test target is not really parallel, don't print the jobs info,
100 # it also uses only the tests/make targets tha 93 # it also uses only the tests/make targets that don't pollute the source
101 # repository, i.e. that uses O= or builds the 94 # repository, i.e. that uses O= or builds the tarpkg outside the source
102 # repo directories. 95 # repo directories.
103 # 96 #
104 # For a full test, use: 97 # For a full test, use:
105 # 98 #
106 # make -C tools/perf -f tests/make 99 # make -C tools/perf -f tests/make
107 # 100 #
108 build-test: 101 build-test:
109 @$(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
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