projects/linux·blob assoc-array-fixes · refs

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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
114check-headers:
115 @./check-headers.sh
116
117#
118# All other targets get passed through:
119#
120%: FORCE
121 $(print_msg)
122 $(make)
123
124.PHONY: tags TAGS FORCE Makefile build-test build-test-tarball check-headers