Makefile - qemu - Git at Google

 # Makefile for QEMU.

 ifneq ($(words $(subst :, ,$(CURDIR))), 1)
   $(error main directory cannot contain spaces nor colons)
 endif

 # Always point to the root of the build tree (needs GNU make).
 BUILD_DIR=$(CURDIR)

 # Before including a proper config-host.mak, assume we are in the source tree
 SRC_PATH=.

 # Don't use implicit rules or variables
 # we have explicit rules for everything
 MAKEFLAGS += -rR

 SHELL = bash -o pipefail

 # Usage: $(call quiet-command,command and args,"NAME","args to print")
 # This will run "command and args", and either:
 #  if V=1 just print the whole command and args
 #  otherwise print the 'quiet' output in the format "  NAME     args to print"
 # NAME should be a short name of the command, 7 letters or fewer.
 # If called with only a single argument, will print nothing in quiet mode.
 quiet-command-run = $(if $(V),,$(if $2,printf "  %-7s %s\n" $2 $3 && ))$1
 quiet-@ = $(if $(V),,@)
 quiet-command = $(quiet-@)$(call quiet-command-run,$1,$2,$3)

 UNCHECKED_GOALS := %clean TAGS cscope ctags dist \
     help check-help print-% \
     docker docker-% vm-help vm-test vm-build-%

 all:
 .PHONY: all clean distclean recurse-all dist msi FORCE

 # Don't try to regenerate Makefile or configure
 # We don't generate any of them
 Makefile: ;
 configure: ;

 # All following code might depend on configuration variables
 ifneq ($(wildcard config-host.mak),)
 include config-host.mak

 git-submodule-update:
 .git-submodule-status: git-submodule-update config-host.mak
 Makefile: .git-submodule-status

 .PHONY: git-submodule-update
 git-submodule-update:
 ifneq ($(GIT_SUBMODULES_ACTION),ignore)
 	$(call quiet-command, \
 		(GIT="$(GIT)" "$(SRC_PATH)/scripts/git-submodule.sh" $(GIT_SUBMODULES_ACTION) $(GIT_SUBMODULES)), \
 		"GIT","$(GIT_SUBMODULES)")
 endif

 # 0. ensure the build tree is okay

 # Check that we're not trying to do an out-of-tree build from
 # a tree that's been used for an in-tree build.
 ifneq ($(realpath $(SRC_PATH)),$(realpath .))
 ifneq ($(wildcard $(SRC_PATH)/config-host.mak),)
 $(error This is an out of tree build but your source tree ($(SRC_PATH)) \
 seems to have been used for an in-tree build. You can fix this by running \
 "$(MAKE) distclean && rm -rf *-linux-user *-softmmu" in your source tree)
 endif
 endif

 # force a rerun of configure if config-host.mak is too old or corrupted
 ifeq ($(MESON),)
 .PHONY: config-host.mak
 x := $(shell rm -rf meson-private meson-info meson-logs)
 endif
 ifeq ($(NINJA),)
 .PHONY: config-host.mak
 x := $(shell rm -rf meson-private meson-info meson-logs)
 else
 export NINJA
 endif
 ifeq ($(wildcard build.ninja),)
 .PHONY: config-host.mak
 x := $(shell rm -rf meson-private meson-info meson-logs)
 endif
 ifeq ($(origin prefix),file)
 .PHONY: config-host.mak
 x := $(shell rm -rf meson-private meson-info meson-logs)
 endif

 # 1. ensure config-host.mak is up-to-date
 config-host.mak: $(SRC_PATH)/configure $(SRC_PATH)/pc-bios $(SRC_PATH)/VERSION
 	@echo config-host.mak is out-of-date, running configure
 	@if test -f meson-private/coredata.dat; then \
 	  ./config.status --skip-meson; \
 	else \
 	  ./config.status && touch build.ninja.stamp; \
 	fi

 # 2. meson.stamp exists if meson has run at least once (so ninja reconfigure
 # works), but otherwise never needs to be updated
 meson-private/coredata.dat: meson.stamp
 meson.stamp: config-host.mak
 	@touch meson.stamp

 # 3. ensure generated build files are up-to-date

 ifneq ($(NINJA),)
 Makefile.ninja: build.ninja
 	$(quiet-@){ \
 	  echo 'ninja-targets = \'; \
 	  $(NINJA) -t targets all | sed 's/:.*//; $$!s/$$/ \\/'; \
 	  echo 'build-files = \'; \
 	  $(NINJA) -t query build.ninja | sed -n '1,/^  input:/d; /^  outputs:/q; s/$$/ \\/p'; \
 	} > $@.tmp && mv $@.tmp $@
 -include Makefile.ninja

 # A separate rule is needed for Makefile dependencies to avoid -n
 build.ninja: build.ninja.stamp
 $(build-files):
 build.ninja.stamp: meson.stamp $(build-files)
 	$(NINJA) $(if $V,-v,) build.ninja && touch $@
 endif

 ifneq ($(MESON),)
 Makefile.mtest: build.ninja scripts/mtest2make.py
 	$(MESON) introspect --targets --tests --benchmarks | $(PYTHON) scripts/mtest2make.py > $@
 -include Makefile.mtest
 endif

 # 4. Rules to bridge to other makefiles

 ifneq ($(NINJA),)
 MAKE.n = $(findstring n,$(firstword $(MAKEFLAGS)))
 MAKE.k = $(findstring k,$(firstword $(MAKEFLAGS)))
 MAKE.q = $(findstring q,$(firstword $(MAKEFLAGS)))
 MAKE.nq = $(if $(word 2, $(MAKE.n) $(MAKE.q)),nq)
 NINJAFLAGS = $(if $V,-v) $(if $(MAKE.n), -n) $(if $(MAKE.k), -k0) \
         $(filter-out -j, $(lastword -j1 $(filter -l% -j%, $(MAKEFLAGS)))) \

 ninja-cmd-goals = $(or $(MAKECMDGOALS), all)
 ninja-cmd-goals += $(foreach t, $(.tests), $(.test.deps.$t))

 makefile-targets := build.ninja ctags TAGS cscope dist clean uninstall
 # "ninja -t targets" also lists all prerequisites.  If build system
 # files are marked as PHONY, however, Make will always try to execute
 # "ninja build.ninja".
 ninja-targets := $(filter-out $(build-files) $(makefile-targets), $(ninja-targets))
 .PHONY: $(ninja-targets) run-ninja
 $(ninja-targets): run-ninja

 # Use "| cat" to give Ninja a more "make-y" output.  Use "+" to bypass the
 # --output-sync line.
 run-ninja: config-host.mak
 ifneq ($(filter $(ninja-targets), $(ninja-cmd-goals)),)
 	+$(quiet-@)$(if $(MAKE.nq),@:, $(NINJA) -d keepdepfile \
 	   $(NINJAFLAGS) $(sort $(filter $(ninja-targets), $(ninja-cmd-goals))) | cat)
 endif
 endif

 # Force configure to re-run if the API symbols are updated
 ifeq ($(CONFIG_PLUGIN),y)
 config-host.mak: $(SRC_PATH)/plugins/qemu-plugins.symbols

 .PHONY: plugins
 plugins:
 	$(call quiet-command,\
 		$(MAKE) $(SUBDIR_MAKEFLAGS) -C contrib/plugins V="$(V)", \
 		"BUILD", "example plugins")
 endif # $(CONFIG_PLUGIN)

 else # config-host.mak does not exist
 config-host.mak:
 ifneq ($(filter-out $(UNCHECKED_GOALS),$(MAKECMDGOALS)),$(if $(MAKECMDGOALS),,fail))
 	@echo "Please call configure before running make!"
 	@exit 1
 endif
 endif # config-host.mak does not exist

 SUBDIR_MAKEFLAGS=$(if $(V),,--no-print-directory --quiet)

 include $(SRC_PATH)/tests/Makefile.include

 all: recurse-all

 ROM_DIRS = $(addprefix pc-bios/, $(ROMS))
 ROM_DIRS_RULES=$(foreach t, all clean, $(addsuffix /$(t), $(ROM_DIRS)))
 # Only keep -O and -g cflags
 .PHONY: $(ROM_DIRS_RULES)
 $(ROM_DIRS_RULES):
 	$(call quiet-command,$(MAKE) $(SUBDIR_MAKEFLAGS) -C $(dir $@) V="$(V)" TARGET_DIR="$(dir $@)" $(notdir $@),)

 .PHONY: recurse-all recurse-clean
 recurse-all: $(addsuffix /all, $(ROM_DIRS))
 recurse-clean: $(addsuffix /clean, $(ROM_DIRS))

 ######################################################################

 clean: recurse-clean
 	-$(quiet-@)test -f build.ninja && $(NINJA) $(NINJAFLAGS) -t clean || :
 	-$(quiet-@)test -f build.ninja && $(NINJA) $(NINJAFLAGS) clean-ctlist || :
 # avoid old build problems by removing potentially incorrect old files
 	rm -f config.mak op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h
 	find . \( -name '*.so' -o -name '*.dll' -o -name '*.[oda]' \) -type f \
 		! -path ./roms/edk2/ArmPkg/Library/GccLto/liblto-aarch64.a \
 		! -path ./roms/edk2/ArmPkg/Library/GccLto/liblto-arm.a \
 		-exec rm {} +
 	rm -f TAGS cscope.* *.pod *~ */*~
 	rm -f fsdev/*.pod scsi/*.pod

 VERSION = $(shell cat $(SRC_PATH)/VERSION)

 dist: qemu-$(VERSION).tar.bz2

 qemu-%.tar.bz2:
 	$(SRC_PATH)/scripts/make-release "$(SRC_PATH)" "$(patsubst qemu-%.tar.bz2,%,$@)"

 distclean: clean
 	-$(quiet-@)test -f build.ninja && $(NINJA) $(NINJAFLAGS) -t clean -g || :
 	rm -f config-host.mak config-host.h* config-poison.h
 	rm -f tests/tcg/config-*.mak
 	rm -f config-all-disas.mak config.status
 	rm -f roms/seabios/config.mak roms/vgabios/config.mak
 	rm -f qemu-plugins-ld.symbols qemu-plugins-ld64.symbols
 	rm -f *-config-target.h *-config-devices.mak *-config-devices.h
 	rm -rf meson-private meson-logs meson-info compile_commands.json
 	rm -f Makefile.ninja Makefile.mtest build.ninja.stamp meson.stamp
 	rm -f config.log
 	rm -f linux-headers/asm
 	rm -Rf .sdk

 find-src-path = find "$(SRC_PATH)/" -path "$(SRC_PATH)/meson" -prune -o \( -name "*.[chsS]" -o -name "*.[ch].inc" \)

 .PHONY: ctags
 ctags:
 	$(call quiet-command, 			\
 		rm -f "$(SRC_PATH)/"tags, 	\
 		"CTAGS", "Remove old tags")
 	$(call quiet-command, \
 		$(find-src-path) -exec ctags 		\
 		-f "$(SRC_PATH)/"tags --append {} +,	\
 		"CTAGS", "Re-index $(SRC_PATH)")

 .PHONY: gtags
 gtags:
 	$(call quiet-command, 			\
 		rm -f "$(SRC_PATH)/"GTAGS; 	\
 		rm -f "$(SRC_PATH)/"GRTAGS; 	\
 		rm -f "$(SRC_PATH)/"GPATH, 	\
 		"GTAGS", "Remove old $@ files")
 	$(call quiet-command, 				\
 	        (cd $(SRC_PATH) && 			\
 		 $(find-src-path) | gtags -f -), 	\
 		"GTAGS", "Re-index $(SRC_PATH)")

 .PHONY: TAGS
 TAGS:
 	$(call quiet-command, 			\
 		rm -f "$(SRC_PATH)/"TAGS,	\
 		"TAGS", "Remove old $@")
 	$(call quiet-command, 				\
 		$(find-src-path) -exec etags 		\
 		-f "$(SRC_PATH)/"TAGS --append {} +, 	\
 		"TAGS", "Re-index $(SRC_PATH)")

 .PHONY: cscope
 cscope:
 	$(call quiet-command,			\
 		rm -f "$(SRC_PATH)/"cscope.* ,	\
 		"cscope", "Remove old $@ files")
 	$(call quiet-command, 					\
 		($(find-src-path) -print | sed -e 's,^\./,,'    \
 		> "$(SRC_PATH)/cscope.files"), 			\
 		"cscope", "Create file list")
 	$(call quiet-command, 				\
 		cscope -b -i"$(SRC_PATH)/cscope.files" 	\
 		-f"$(SRC_PATH)"/cscope.out, 		\
 		"cscope", "Re-index $(SRC_PATH)")

 # Needed by "meson install"
 export DESTDIR

 include $(SRC_PATH)/tests/docker/Makefile.include
 include $(SRC_PATH)/tests/vm/Makefile.include

 print-help-run = printf "  %-30s - %s\\n" "$1" "$2"
 print-help = @$(call print-help-run,$1,$2)

 .PHONY: help
 help:
 	@echo  'Generic targets:'
 	$(call print-help,all,Build all)
 	$(call print-help,dir/file.o,Build specified target only)
 	$(call print-help,install,Install QEMU, documentation and tools)
 	$(call print-help,ctags/gtags/TAGS,Generate tags file for editors)
 	$(call print-help,cscope,Generate cscope index)
 	$(call print-help,sparse,Run sparse on the QEMU source)
 	@echo  ''
 ifeq ($(CONFIG_PLUGIN),y)
 	@echo  'Plugin targets:'
 	$(call print-help,plugins,Build the example TCG plugins)
 	@echo  ''
 endif
 	@echo  'Cleaning targets:'
 	$(call print-help,clean,Remove most generated files but keep the config)
 	$(call print-help,distclean,Remove all generated files)
 	$(call print-help,dist,Build a distributable tarball)
 	@echo  ''
 	@echo  'Test targets:'
 	$(call print-help,check,Run all tests (check-help for details))
 	$(call print-help,bench,Run all benchmarks)
 	$(call print-help,docker-help,Help about targets running tests inside containers)
 	$(call print-help,vm-help,Help about targets running tests inside VM)
 	@echo  ''
 	@echo  'Documentation targets:'
 	$(call print-help,html man,Build documentation in specified format)
 	@echo  ''
 ifdef CONFIG_WIN32
 	@echo  'Windows targets:'
 	$(call print-help,installer,Build NSIS-based installer for QEMU)
 	$(call print-help,msi,Build MSI-based installer for qemu-ga)
 	@echo  ''
 endif
 	$(call print-help,$(MAKE) [targets],(quiet build, default))
 	$(call print-help,$(MAKE) V=1 [targets],(verbose build))

 # will delete the target of a rule if commands exit with a nonzero exit status
 .DELETE_ON_ERROR:

 print-%:
 	@echo '$*=$($*)'
	# Makefile for QEMU.

	ifneq ($(words $(subst :, ,$(CURDIR))), 1)
	$(error main directory cannot contain spaces nor colons)
	endif

	# Always point to the root of the build tree (needs GNU make).
	BUILD_DIR=$(CURDIR)

	# Before including a proper config-host.mak, assume we are in the source tree
	SRC_PATH=.

	# Don't use implicit rules or variables
	# we have explicit rules for everything
	MAKEFLAGS += -rR

	SHELL = bash -o pipefail

	# Usage: $(call quiet-command,command and args,"NAME","args to print")
	# This will run "command and args", and either:
	# if V=1 just print the whole command and args
	# otherwise print the 'quiet' output in the format " NAME args to print"
	# NAME should be a short name of the command, 7 letters or fewer.
	# If called with only a single argument, will print nothing in quiet mode.
	quiet-command-run = $(if $(V),,$(if $2,printf " %-7s %s\n" $2 $3 && ))$1
	quiet-@ = $(if $(V),,@)
	quiet-command = $(quiet-@)$(call quiet-command-run,$1,$2,$3)

	UNCHECKED_GOALS := %clean TAGS cscope ctags dist \
	help check-help print-% \
	docker docker-% vm-help vm-test vm-build-%

	all:
	.PHONY: all clean distclean recurse-all dist msi FORCE

	# Don't try to regenerate Makefile or configure
	# We don't generate any of them
	Makefile: ;
	configure: ;

	# All following code might depend on configuration variables
	ifneq ($(wildcard config-host.mak),)
	include config-host.mak

	git-submodule-update:
	.git-submodule-status: git-submodule-update config-host.mak
	Makefile: .git-submodule-status

	.PHONY: git-submodule-update
	git-submodule-update:
	ifneq ($(GIT_SUBMODULES_ACTION),ignore)
	$(call quiet-command, \
	(GIT="$(GIT)" "$(SRC_PATH)/scripts/git-submodule.sh" $(GIT_SUBMODULES_ACTION) $(GIT_SUBMODULES)), \
	"GIT","$(GIT_SUBMODULES)")
	endif

	# 0. ensure the build tree is okay

	# Check that we're not trying to do an out-of-tree build from
	# a tree that's been used for an in-tree build.
	ifneq ($(realpath $(SRC_PATH)),$(realpath .))
	ifneq ($(wildcard $(SRC_PATH)/config-host.mak),)
	$(error This is an out of tree build but your source tree ($(SRC_PATH)) \
	seems to have been used for an in-tree build. You can fix this by running \
	"$(MAKE) distclean && rm -rf -linux-user -softmmu" in your source tree)
	endif
	endif

	# force a rerun of configure if config-host.mak is too old or corrupted
	ifeq ($(MESON),)
	.PHONY: config-host.mak
	x := $(shell rm -rf meson-private meson-info meson-logs)
	endif
	ifeq ($(NINJA),)
	.PHONY: config-host.mak
	x := $(shell rm -rf meson-private meson-info meson-logs)
	else
	export NINJA
	endif
	ifeq ($(wildcard build.ninja),)
	.PHONY: config-host.mak
	x := $(shell rm -rf meson-private meson-info meson-logs)
	endif
	ifeq ($(origin prefix),file)
	.PHONY: config-host.mak
	x := $(shell rm -rf meson-private meson-info meson-logs)
	endif

	# 1. ensure config-host.mak is up-to-date
	config-host.mak: $(SRC_PATH)/configure $(SRC_PATH)/pc-bios $(SRC_PATH)/VERSION
	@echo config-host.mak is out-of-date, running configure
	@if test -f meson-private/coredata.dat; then \
	./config.status --skip-meson; \
	else \
	./config.status && touch build.ninja.stamp; \
	fi

	# 2. meson.stamp exists if meson has run at least once (so ninja reconfigure
	# works), but otherwise never needs to be updated
	meson-private/coredata.dat: meson.stamp
	meson.stamp: config-host.mak
	@touch meson.stamp

	# 3. ensure generated build files are up-to-date

	ifneq ($(NINJA),)
	Makefile.ninja: build.ninja
	$(quiet-@){ \
	echo 'ninja-targets = \'; \
	$(NINJA) -t targets all \| sed 's/:.*//; $$!s/$$/ \\/'; \
	echo 'build-files = \'; \
	$(NINJA) -t query build.ninja \| sed -n '1,/^ input:/d; /^ outputs:/q; s/$$/ \\/p'; \
	} > $@.tmp && mv $@.tmp $@
	-include Makefile.ninja

	# A separate rule is needed for Makefile dependencies to avoid -n
	build.ninja: build.ninja.stamp
	$(build-files):
	build.ninja.stamp: meson.stamp $(build-files)
	$(NINJA) $(if $V,-v,) build.ninja && touch $@
	endif

	ifneq ($(MESON),)
	Makefile.mtest: build.ninja scripts/mtest2make.py
	$(MESON) introspect --targets --tests --benchmarks \| $(PYTHON) scripts/mtest2make.py > $@
	-include Makefile.mtest
	endif

	# 4. Rules to bridge to other makefiles

	ifneq ($(NINJA),)
	MAKE.n = $(findstring n,$(firstword $(MAKEFLAGS)))
	MAKE.k = $(findstring k,$(firstword $(MAKEFLAGS)))
	MAKE.q = $(findstring q,$(firstword $(MAKEFLAGS)))
	MAKE.nq = $(if $(word 2, $(MAKE.n) $(MAKE.q)),nq)
	NINJAFLAGS = $(if $V,-v) $(if $(MAKE.n), -n) $(if $(MAKE.k), -k0) \
	$(filter-out -j, $(lastword -j1 $(filter -l% -j%, $(MAKEFLAGS)))) \

	ninja-cmd-goals = $(or $(MAKECMDGOALS), all)
	ninja-cmd-goals += $(foreach t, $(.tests), $(.test.deps.$t))

	makefile-targets := build.ninja ctags TAGS cscope dist clean uninstall
	# "ninja -t targets" also lists all prerequisites. If build system
	# files are marked as PHONY, however, Make will always try to execute
	# "ninja build.ninja".
	ninja-targets := $(filter-out $(build-files) $(makefile-targets), $(ninja-targets))
	.PHONY: $(ninja-targets) run-ninja
	$(ninja-targets): run-ninja

	# Use "\| cat" to give Ninja a more "make-y" output. Use "+" to bypass the
	# --output-sync line.
	run-ninja: config-host.mak
	ifneq ($(filter $(ninja-targets), $(ninja-cmd-goals)),)
	+$(quiet-@)$(if $(MAKE.nq),@:, $(NINJA) -d keepdepfile \
	$(NINJAFLAGS) $(sort $(filter $(ninja-targets), $(ninja-cmd-goals))) \| cat)
	endif
	endif

	# Force configure to re-run if the API symbols are updated
	ifeq ($(CONFIG_PLUGIN),y)
	config-host.mak: $(SRC_PATH)/plugins/qemu-plugins.symbols

	.PHONY: plugins
	plugins:
	$(call quiet-command,\
	$(MAKE) $(SUBDIR_MAKEFLAGS) -C contrib/plugins V="$(V)", \
	"BUILD", "example plugins")
	endif # $(CONFIG_PLUGIN)

	else # config-host.mak does not exist
	config-host.mak:
	ifneq ($(filter-out $(UNCHECKED_GOALS),$(MAKECMDGOALS)),$(if $(MAKECMDGOALS),,fail))
	@echo "Please call configure before running make!"
	@exit 1
	endif
	endif # config-host.mak does not exist

	SUBDIR_MAKEFLAGS=$(if $(V),,--no-print-directory --quiet)

	include $(SRC_PATH)/tests/Makefile.include

	all: recurse-all

	ROM_DIRS = $(addprefix pc-bios/, $(ROMS))
	ROM_DIRS_RULES=$(foreach t, all clean, $(addsuffix /$(t), $(ROM_DIRS)))
	# Only keep -O and -g cflags
	.PHONY: $(ROM_DIRS_RULES)
	$(ROM_DIRS_RULES):
	$(call quiet-command,$(MAKE) $(SUBDIR_MAKEFLAGS) -C $(dir $@) V="$(V)" TARGET_DIR="$(dir $@)" $(notdir $@),)

	.PHONY: recurse-all recurse-clean
	recurse-all: $(addsuffix /all, $(ROM_DIRS))
	recurse-clean: $(addsuffix /clean, $(ROM_DIRS))

	######################################################################

	clean: recurse-clean
	-$(quiet-@)test -f build.ninja && $(NINJA) $(NINJAFLAGS) -t clean \|\| :
	-$(quiet-@)test -f build.ninja && $(NINJA) $(NINJAFLAGS) clean-ctlist \|\| :
	# avoid old build problems by removing potentially incorrect old files
	rm -f config.mak op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h
	find . \( -name '.so' -o -name '.dll' -o -name '*.[oda]' \) -type f \
	! -path ./roms/edk2/ArmPkg/Library/GccLto/liblto-aarch64.a \
	! -path ./roms/edk2/ArmPkg/Library/GccLto/liblto-arm.a \
	-exec rm {} +
	rm -f TAGS cscope.* .pod ~ /~
	rm -f fsdev/.pod scsi/.pod

	VERSION = $(shell cat $(SRC_PATH)/VERSION)

	dist: qemu-$(VERSION).tar.bz2

	qemu-%.tar.bz2:
	$(SRC_PATH)/scripts/make-release "$(SRC_PATH)" "$(patsubst qemu-%.tar.bz2,%,$@)"

	distclean: clean
	-$(quiet-@)test -f build.ninja && $(NINJA) $(NINJAFLAGS) -t clean -g \|\| :
	rm -f config-host.mak config-host.h* config-poison.h
	rm -f tests/tcg/config-*.mak
	rm -f config-all-disas.mak config.status
	rm -f roms/seabios/config.mak roms/vgabios/config.mak
	rm -f qemu-plugins-ld.symbols qemu-plugins-ld64.symbols
	rm -f -config-target.h -config-devices.mak *-config-devices.h
	rm -rf meson-private meson-logs meson-info compile_commands.json
	rm -f Makefile.ninja Makefile.mtest build.ninja.stamp meson.stamp
	rm -f config.log
	rm -f linux-headers/asm
	rm -Rf .sdk

	find-src-path = find "$(SRC_PATH)/" -path "$(SRC_PATH)/meson" -prune -o \( -name ".[chsS]" -o -name ".[ch].inc" \)

	.PHONY: ctags
	ctags:
	$(call quiet-command, \
	rm -f "$(SRC_PATH)/"tags, \
	"CTAGS", "Remove old tags")
	$(call quiet-command, \
	$(find-src-path) -exec ctags \
	-f "$(SRC_PATH)/"tags --append {} +, \
	"CTAGS", "Re-index $(SRC_PATH)")

	.PHONY: gtags
	gtags:
	$(call quiet-command, \
	rm -f "$(SRC_PATH)/"GTAGS; \
	rm -f "$(SRC_PATH)/"GRTAGS; \
	rm -f "$(SRC_PATH)/"GPATH, \
	"GTAGS", "Remove old $@ files")
	$(call quiet-command, \
	(cd $(SRC_PATH) && \
	$(find-src-path) \| gtags -f -), \
	"GTAGS", "Re-index $(SRC_PATH)")

	.PHONY: TAGS
	TAGS:
	$(call quiet-command, \
	rm -f "$(SRC_PATH)/"TAGS, \
	"TAGS", "Remove old $@")
	$(call quiet-command, \
	$(find-src-path) -exec etags \
	-f "$(SRC_PATH)/"TAGS --append {} +, \
	"TAGS", "Re-index $(SRC_PATH)")

	.PHONY: cscope
	cscope:
	$(call quiet-command, \
	rm -f "$(SRC_PATH)/"cscope.* , \
	"cscope", "Remove old $@ files")
	$(call quiet-command, \
	($(find-src-path) -print \| sed -e 's,^\./,,' \
	> "$(SRC_PATH)/cscope.files"), \
	"cscope", "Create file list")
	$(call quiet-command, \
	cscope -b -i"$(SRC_PATH)/cscope.files" \
	-f"$(SRC_PATH)"/cscope.out, \
	"cscope", "Re-index $(SRC_PATH)")

	# Needed by "meson install"
	export DESTDIR

	include $(SRC_PATH)/tests/docker/Makefile.include
	include $(SRC_PATH)/tests/vm/Makefile.include

	print-help-run = printf " %-30s - %s\\n" "$1" "$2"
	print-help = @$(call print-help-run,$1,$2)

	.PHONY: help
	help:
	@echo 'Generic targets:'
	$(call print-help,all,Build all)
	$(call print-help,dir/file.o,Build specified target only)
	$(call print-help,install,Install QEMU, documentation and tools)
	$(call print-help,ctags/gtags/TAGS,Generate tags file for editors)
	$(call print-help,cscope,Generate cscope index)
	$(call print-help,sparse,Run sparse on the QEMU source)
	@echo ''
	ifeq ($(CONFIG_PLUGIN),y)
	@echo 'Plugin targets:'
	$(call print-help,plugins,Build the example TCG plugins)
	@echo ''
	endif
	@echo 'Cleaning targets:'
	$(call print-help,clean,Remove most generated files but keep the config)
	$(call print-help,distclean,Remove all generated files)
	$(call print-help,dist,Build a distributable tarball)
	@echo ''
	@echo 'Test targets:'
	$(call print-help,check,Run all tests (check-help for details))
	$(call print-help,bench,Run all benchmarks)
	$(call print-help,docker-help,Help about targets running tests inside containers)
	$(call print-help,vm-help,Help about targets running tests inside VM)
	@echo ''
	@echo 'Documentation targets:'
	$(call print-help,html man,Build documentation in specified format)
	@echo ''
	ifdef CONFIG_WIN32
	@echo 'Windows targets:'
	$(call print-help,installer,Build NSIS-based installer for QEMU)
	$(call print-help,msi,Build MSI-based installer for qemu-ga)
	@echo ''
	endif
	$(call print-help,$(MAKE) [targets],(quiet build, default))
	$(call print-help,$(MAKE) V=1 [targets],(verbose build))

	# will delete the target of a rule if commands exit with a nonzero exit status
	.DELETE_ON_ERROR:

	print-%:
	@echo '$=$($)'