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 #
19 unexport 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 #
27 ifeq ($(JOBS),)
28 JOBS := $(shell (getconf _NPROCESSORS_ONLN || egrep -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
29 ifeq ($(JOBS),0)
30 JOBS := 1
31 endif
32 endif
33
34 #
35 # Only pass canonical directory names as the output directory:
36 #
37 ifneq ($(O),)
38 FULL_O := $(shell cd $(PWD); readlink -f $(O) || echo $(O))
39 endif
40
41 #
42 # Only accept the 'DEBUG' variable from the command line:
43 #
44 ifeq ("$(origin DEBUG)", "command line")
45 ifeq ($(DEBUG),)
46 override DEBUG = 0
47 else
48 SET_DEBUG = "DEBUG=$(DEBUG)"
49 endif
50 else
51 override DEBUG = 0
52 endif
53
54 define print_msg
55 @printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' parallel build\n'
56 endef
57
58 define make
59 @$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) O=$(FULL_O) $(SET_DEBUG) $@
60 endef
61
62 #
63 # Needed if no target specified:
64 # (Except for tags and TAGS targets. The reason is that the
65 # Makefile does not treat tags/TAGS as targets but as files
66 # and thus won't rebuilt them once they are in place.)
67 #
68 all tags TAGS:
69 $(print_msg)
70 $(make)
71
72 ifdef MAKECMDGOALS
73 has_clean := 0
74 ifneq ($(filter clean,$(MAKECMDGOALS)),)
75 has_clean := 1
76 endif # clean
77
78 ifeq ($(has_clean),1)
79 rest := $(filter-out clean,$(MAKECMDGOALS))
80 ifneq ($(rest),)
81 $(rest): clean
82 endif # rest
83 endif # has_clean
84 endif # MAKECMDGOALS
85
86 #
87 # Explicitly disable parallelism for the clean target.
88 #
89 clean:
90 $(make) -j1
91
92 #
93 # The build-test target is not really parallel, don't print the jobs info,
94 # it also uses only the tests/make targets that don't pollute the source
95 # repository, i.e. that uses O= or builds the tarpkg outside the source
96 # repo directories.
97 #
98 # For a full test, use:
99 #
100 # make -C tools/perf -f tests/make
101 #
102 build-test:
103 @$(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
104
105 build-test-tarball:
106 @$(MAKE) -f tests/make REUSE_FEATURES_DUMP=1 MK=Makefile SET_PARALLEL=1 --no-print-directory out
107
108 #
109 # All other targets get passed through:
110 #
111 %: FORCE
112 $(print_msg)
113 $(make)
114
115 .PHONY: tags TAGS FORCE Makefile
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