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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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be81aed3f7
Don't print header differences during the perf build as it's noisy. Mostly people won't care and find it annoying. As it's to improve perf trace beautifier to catch up new changes mostly in UAPIs, we can make it a separate build target and call it occasionally. Make it and build-test related targets phony. Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
125 lines
2.8 KiB
Makefile
125 lines
2.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# This is a simple wrapper Makefile that calls the main Makefile.perf
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# with a -j option to do parallel builds
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#
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# If you want to invoke the perf build in some non-standard way then
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# you can use the 'make -f Makefile.perf' method to invoke it.
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#
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#
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# Clear out the built-in rules GNU make defines by default (such as .o targets),
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# so that we pass through all targets to Makefile.perf:
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#
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.SUFFIXES:
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#
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# We don't want to pass along options like -j:
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#
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unexport MAKEFLAGS
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#
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# Do a parallel build with multiple jobs, based on the number of CPUs online
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# in this system: 'make -j8' on a 8-CPU system, etc.
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#
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# (To override it, run 'make JOBS=1' and similar.)
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#
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ifeq ($(JOBS),)
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JOBS := $(shell (getconf _NPROCESSORS_ONLN || grep -E -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
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ifeq ($(JOBS),0)
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JOBS := 1
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endif
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endif
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#
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# Only pass canonical directory names as the output directory:
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#
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ifneq ($(O),)
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FULL_O := $(shell cd $(PWD); readlink -f $(O) || echo $(O))
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endif
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#
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# Only accept the 'DEBUG' variable from the command line:
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#
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ifeq ("$(origin DEBUG)", "command line")
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ifeq ($(DEBUG),)
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override DEBUG = 0
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else
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SET_DEBUG = "DEBUG=$(DEBUG)"
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endif
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else
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override DEBUG = 0
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endif
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ifeq ($(JOBS),1)
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BUILD_TYPE := sequential
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else
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BUILD_TYPE := parallel
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endif
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define print_msg
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@printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' $(BUILD_TYPE) build\n'
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endef
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define make
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@$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) O=$(FULL_O) $(SET_DEBUG) $@
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endef
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#
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# Needed if no target specified:
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# (Except for tags and TAGS targets. The reason is that the
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# Makefile does not treat tags/TAGS as targets but as files
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# and thus won't rebuilt them once they are in place.)
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#
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all tags TAGS:
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$(print_msg)
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$(make)
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ifdef MAKECMDGOALS
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has_clean := 0
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ifneq ($(filter clean,$(MAKECMDGOALS)),)
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has_clean := 1
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endif # clean
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ifeq ($(has_clean),1)
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rest := $(filter-out clean,$(MAKECMDGOALS))
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ifneq ($(rest),)
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$(rest): clean
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endif # rest
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endif # has_clean
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endif # MAKECMDGOALS
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#
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# Explicitly disable parallelism for the clean target.
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#
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clean:
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$(make) -j1
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#
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# The build-test target is not really parallel, don't print the jobs info,
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# it also uses only the tests/make targets that don't pollute the source
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# repository, i.e. that uses O= or builds the tarpkg outside the source
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# repo directories.
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#
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# For a full test, use:
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#
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# make -C tools/perf -f tests/make
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#
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build-test:
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@$(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
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build-test-tarball:
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@$(MAKE) -f tests/make REUSE_FEATURES_DUMP=1 MK=Makefile SET_PARALLEL=1 --no-print-directory out
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check-headers:
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@./check-headers.sh
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#
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# All other targets get passed through:
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#
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%: FORCE
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$(print_msg)
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$(make)
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.PHONY: tags TAGS FORCE Makefile build-test build-test-tarball check-headers
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