Makefile

   1 # Makefile for QEMU.
   2
   3 # Always point to the root of the build tree (needs GNU make).
   4 BUILD_DIR=$(CURDIR)
   5
   6 # All following code might depend on configuration variables
   7 ifneq ($(wildcard config-host.mak),)
   8 # Put the all: rule here so that config-host.mak can contain dependencies.
   9 all:
  10 include config-host.mak
  11
  12 # Check that we're not trying to do an out-of-tree build from
  13 # a tree that's been used for an in-tree build.
  14 ifneq ($(realpath $(SRC_PATH)),$(realpath .))
  15 ifneq ($(wildcard $(SRC_PATH)/config-host.mak),)
  16 $(error This is an out of tree build but your source tree ($(SRC_PATH)) \
  17 seems to have been used for an in-tree build. You can fix this by running \
  18 "make distclean && rm -rf *-linux-user *-softmmu" in your source tree)
  19 endif
  20 endif
  21
  22 include $(SRC_PATH)/rules.mak
  23 config-host.mak: $(SRC_PATH)/configure
  24         @echo $@ is out-of-date, running configure
  25         @sed -n "/.*Configured with/s/[^:]*: //p" $@ | sh
  26 else
  27 config-host.mak:
  28 ifneq ($(filter-out %clean,$(MAKECMDGOALS)),$(if $(MAKECMDGOALS),,fail))
  29         @echo "Please call configure before running make!"
  30         @exit 1
  31 endif
  32 endif
  33
  34 GENERATED_HEADERS = config-host.h qemu-options.def
  35 GENERATED_HEADERS += qmp-commands.h qapi-types.h qapi-visit.h
  36 GENERATED_SOURCES += qmp-marshal.c qapi-types.c qapi-visit.c
  37
  38 GENERATED_HEADERS += trace/generated-tracers.h
  39 ifeq ($(TRACE_BACKEND),dtrace)
  40 GENERATED_HEADERS += trace/generated-tracers-dtrace.h
  41 endif
  42 GENERATED_SOURCES += trace/generated-tracers.c
  43
  44 # Don't try to regenerate Makefile or configure
  45 # We don't generate any of them
  46 Makefile: ;
  47 configure: ;
  48
  49 .PHONY: all clean cscope distclean dvi html info install install-doc \
  50         pdf recurse-all speed test dist
  51
  52 $(call set-vpath, $(SRC_PATH))
  53
  54 LIBS+=-lz $(LIBS_TOOLS)
  55
  56 HELPERS-$(CONFIG_LINUX) = qemu-bridge-helper$(EXESUF)
  57
  58 ifdef BUILD_DOCS
  59 DOCS=qemu-doc.html qemu-tech.html qemu.1 qemu-img.1 qemu-nbd.8 QMP/qmp-commands.txt
  60 ifdef CONFIG_VIRTFS
  61 DOCS+=fsdev/virtfs-proxy-helper.1
  62 endif
  63 else
  64 DOCS=
  65 endif
  66
  67 SUBDIR_MAKEFLAGS=$(if $(V),,--no-print-directory) BUILD_DIR=$(BUILD_DIR)
  68 SUBDIR_DEVICES_MAK=$(patsubst %, %/config-devices.mak, $(TARGET_DIRS))
  69 SUBDIR_DEVICES_MAK_DEP=$(patsubst %, %/config-devices.mak.d, $(TARGET_DIRS))
  70
  71 ifeq ($(SUBDIR_DEVICES_MAK),)
  72 config-all-devices.mak:
  73         $(call quiet-command,echo '# no devices' > $@,"  GEN   $@")
  74 else
  75 config-all-devices.mak: $(SUBDIR_DEVICES_MAK)
  76         $(call quiet-command,cat $(SUBDIR_DEVICES_MAK) | grep =y | sort -u > $@,"  GEN   $@")
  77 endif
  78
  79 -include $(SUBDIR_DEVICES_MAK_DEP)
  80
  81 %/config-devices.mak: default-configs/%.mak
  82         $(call quiet-command,$(SHELL) $(SRC_PATH)/scripts/make_device_config.sh $@ $<, "  GEN   $@")
  83         @if test -f $@; then \
  84           if cmp -s $@.old $@; then \
  85             mv $@.tmp $@; \
  86             cp -p $@ $@.old; \
  87           else \
  88             if test -f $@.old; then \
  89               echo "WARNING: $@ (user modified) out of date.";\
  90             else \
  91               echo "WARNING: $@ out of date.";\
  92             fi; \
  93             echo "Run \"make defconfig\" to regenerate."; \
  94             rm $@.tmp; \
  95           fi; \
  96          else \
  97           mv $@.tmp $@; \
  98           cp -p $@ $@.old; \
  99          fi
 100
 101 defconfig:
 102         rm -f config-all-devices.mak $(SUBDIR_DEVICES_MAK)
 103
 104 -include config-all-devices.mak
 105 -include config-all-disas.mak
 106
 107 all: $(DOCS) $(TOOLS) $(HELPERS-y) recurse-all
 108
 109 config-host.h: config-host.h-timestamp
 110 config-host.h-timestamp: config-host.mak
 111 qemu-options.def: $(SRC_PATH)/qemu-options.hx
 112         $(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< > $@,"  GEN   $@")
 113
 114 SUBDIR_RULES=$(patsubst %,subdir-%, $(TARGET_DIRS))
 115
 116 subdir-%:
 117         $(call quiet-command,$(MAKE) $(SUBDIR_MAKEFLAGS) -C $* V="$(V)" TARGET_DIR="$*/" all,)
 118
 119 ifneq ($(wildcard config-host.mak),)
 120 include $(SRC_PATH)/Makefile.objs
 121 endif
 122
 123 subdir-libcacard: $(oslib-obj-y) $(trace-obj-y) qemu-timer-common.o
 124
 125 subdir-pixman: pixman/Makefile
 126         $(call quiet-command,$(MAKE) $(SUBDIR_MAKEFLAGS) -C pixman V="$(V)" all,)
 127
 128 pixman/Makefile: $(SRC_PATH)/pixman/configure
 129         (cd pixman; CFLAGS="$(CFLAGS) -fPIC" $(SRC_PATH)/pixman/configure $(AUTOCONF_HOST) --disable-gtk --disable-shared --enable-static)
 130
 131 $(SRC_PATH)/pixman/configure:
 132         (cd $(SRC_PATH)/pixman; autoreconf -v --install)
 133
 134 $(SUBDIR_RULES): libqemustub.a
 135
 136 $(filter %-softmmu,$(SUBDIR_RULES)): $(universal-obj-y) $(trace-obj-y) $(common-obj-y) $(extra-obj-y)
 137
 138 $(filter %-user,$(SUBDIR_RULES)): $(universal-obj-y) $(trace-obj-y) $(user-obj-y)
 139
 140 ROMSUBDIR_RULES=$(patsubst %,romsubdir-%, $(ROMS))
 141 romsubdir-%:
 142         $(call quiet-command,$(MAKE) $(SUBDIR_MAKEFLAGS) -C pc-bios/$* V="$(V)" TARGET_DIR="$*/",)
 143
 144 ALL_SUBDIRS=$(TARGET_DIRS) $(patsubst %,pc-bios/%, $(ROMS))
 145
 146 recurse-all: $(SUBDIR_RULES) $(ROMSUBDIR_RULES)
 147
 148 bt-host.o: QEMU_CFLAGS += $(BLUEZ_CFLAGS)
 149
 150 version.o: $(SRC_PATH)/version.rc config-host.h
 151         $(call quiet-command,$(WINDRES) -I. -o $@ $<,"  RC    $(TARGET_DIR)$@")
 152
 153 version-obj-$(CONFIG_WIN32) += version.o
 154
 155 ######################################################################
 156 # Build library with stubs
 157
 158 libqemustub.a: $(stub-obj-y)
 159
 160 ######################################################################
 161 # Support building shared library libcacard
 162
 163 .PHONY: libcacard.la install-libcacard
 164 libcacard.la: $(oslib-obj-y) qemu-timer-common.o $(trace-obj-y)
 165         $(call quiet-command,$(MAKE) $(SUBDIR_MAKEFLAGS) -C libcacard V="$(V)" TARGET_DIR="$*/" libcacard.la,)
 166
 167 install-libcacard: libcacard.la
 168         $(call quiet-command,$(MAKE) $(SUBDIR_MAKEFLAGS) -C libcacard V="$(V)" TARGET_DIR="$*/" install-libcacard,)
 169
 170 ######################################################################
 171
 172 qemu-img.o: qemu-img-cmds.h
 173
 174 tools-obj-y = $(oslib-obj-y) $(trace-obj-y) qemu-tool.o qemu-timer.o \
 175         main-loop.o iohandler.o error.o
 176 tools-obj-$(CONFIG_POSIX) += compatfd.o
 177
 178 qemu-img$(EXESUF): qemu-img.o $(tools-obj-y) $(block-obj-y) libqemustub.a
 179 qemu-nbd$(EXESUF): qemu-nbd.o $(tools-obj-y) $(block-obj-y) libqemustub.a
 180 qemu-io$(EXESUF): qemu-io.o cmd.o $(tools-obj-y) $(block-obj-y) libqemustub.a
 181
 182 qemu-bridge-helper$(EXESUF): qemu-bridge-helper.o
 183
 184 vscclient$(EXESUF): LIBS += $(libcacard_libs)
 185 vscclient$(EXESUF): $(libcacard-y) $(oslib-obj-y) $(trace-obj-y) libcacard/vscclient.o libqemustub.a
 186         $(call LINK, $^)
 187
 188 fsdev/virtfs-proxy-helper$(EXESUF): fsdev/virtfs-proxy-helper.o fsdev/virtio-9p-marshal.o oslib-posix.o $(trace-obj-y)
 189 fsdev/virtfs-proxy-helper$(EXESUF): LIBS += -lcap
 190
 191 qemu-img-cmds.h: $(SRC_PATH)/qemu-img-cmds.hx
 192         $(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< > $@,"  GEN   $@")
 193
 194 qemu-ga$(EXESUF): LIBS = $(LIBS_QGA)
 195 qemu-ga$(EXESUF): QEMU_CFLAGS += -I qga/qapi-generated
 196
 197 gen-out-type = $(subst .,-,$(suffix $@))
 198
 199 ifneq ($(wildcard config-host.mak),)
 200 include $(SRC_PATH)/tests/Makefile
 201 endif
 202
 203 qapi-py = $(SRC_PATH)/scripts/qapi.py $(SRC_PATH)/scripts/ordereddict.py
 204
 205 qga/qapi-generated/qga-qapi-types.c qga/qapi-generated/qga-qapi-types.h :\
 206 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
 207         $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py $(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, "  GEN   $@")
 208 qga/qapi-generated/qga-qapi-visit.c qga/qapi-generated/qga-qapi-visit.h :\
 209 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-visit.py $(qapi-py)
 210         $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py $(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, "  GEN   $@")
 211 qga/qapi-generated/qga-qmp-commands.h qga/qapi-generated/qga-qmp-marshal.c :\
 212 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-commands.py $(qapi-py)
 213         $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py $(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, "  GEN   $@")
 214
 215 qapi-types.c qapi-types.h :\
 216 $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
 217         $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py $(gen-out-type) -o "." < $<, "  GEN   $@")
 218 qapi-visit.c qapi-visit.h :\
 219 $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/scripts/qapi-visit.py $(qapi-py)
 220         $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py $(gen-out-type) -o "."  < $<, "  GEN   $@")
 221 qmp-commands.h qmp-marshal.c :\
 222 $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/scripts/qapi-commands.py $(qapi-py)
 223         $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py $(gen-out-type) -m -o "." < $<, "  GEN   $@")
 224
 225 QGALIB_GEN=$(addprefix qga/qapi-generated/, qga-qapi-types.h qga-qapi-visit.h qga-qmp-commands.h)
 226 $(qga-obj-y) qemu-ga.o: $(QGALIB_GEN)
 227
 228 qemu-ga$(EXESUF): $(qga-obj-y) $(oslib-obj-y) $(trace-obj-y) $(qapi-obj-y) $(qobject-obj-y) $(version-obj-y) libqemustub.a
 229         $(call LINK, $^)
 230
 231 clean:
 232 # avoid old build problems by removing potentially incorrect old files
 233         rm -f config.mak op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h
 234         rm -f qemu-options.def
 235         find . -name '*.[od]' -type f -exec rm -f {} +
 236         rm -f *.a *.lo $(TOOLS) $(HELPERS-y) qemu-ga TAGS cscope.* *.pod *~ */*~
 237         rm -Rf .libs
 238         rm -f qemu-img-cmds.h
 239         @# May not be present in GENERATED_HEADERS
 240         rm -f trace/generated-tracers-dtrace.dtrace*
 241         rm -f trace/generated-tracers-dtrace.h*
 242         rm -f $(foreach f,$(GENERATED_HEADERS),$(f) $(f)-timestamp)
 243         rm -f $(foreach f,$(GENERATED_SOURCES),$(f) $(f)-timestamp)
 244         rm -rf qapi-generated
 245         rm -rf qga/qapi-generated
 246         $(MAKE) -C tests/tcg clean
 247         for d in $(ALL_SUBDIRS) libcacard; do \
 248         if test -d $$d; then $(MAKE) -C $$d $@ || exit 1; fi; \
 249         rm -f $$d/qemu-options.def; \
 250         done
 251
 252 VERSION ?= $(shell cat VERSION)
 253
 254 dist: qemu-$(VERSION).tar.bz2
 255
 256 qemu-%.tar.bz2:
 257         $(SRC_PATH)/scripts/make-release "$(SRC_PATH)" "$(patsubst qemu-%.tar.bz2,%,$@)"
 258
 259 distclean: clean
 260         rm -f config-host.mak config-host.h* config-host.ld $(DOCS) qemu-options.texi qemu-img-cmds.texi qemu-monitor.texi
 261         rm -f config-all-devices.mak config-all-disas.mak
 262         rm -f roms/seabios/config.mak roms/vgabios/config.mak
 263         rm -f qemu-doc.info qemu-doc.aux qemu-doc.cp qemu-doc.cps qemu-doc.dvi
 264         rm -f qemu-doc.fn qemu-doc.fns qemu-doc.info qemu-doc.ky qemu-doc.kys
 265         rm -f qemu-doc.log qemu-doc.pdf qemu-doc.pg qemu-doc.toc qemu-doc.tp
 266         rm -f qemu-doc.vr
 267         rm -f config.log
 268         rm -f linux-headers/asm
 269         rm -f qemu-tech.info qemu-tech.aux qemu-tech.cp qemu-tech.dvi qemu-tech.fn qemu-tech.info qemu-tech.ky qemu-tech.log qemu-tech.pdf qemu-tech.pg qemu-tech.toc qemu-tech.tp qemu-tech.vr
 270         for d in $(TARGET_DIRS); do \
 271         rm -rf $$d || exit 1 ; \
 272         done
 273         if test -f pixman/config.log; then make -C pixman distclean; fi
 274
 275 KEYMAPS=da     en-gb  et  fr     fr-ch  is  lt  modifiers  no  pt-br  sv \
 276 ar      de     en-us  fi  fr-be  hr     it  lv  nl         pl  ru     th \
 277 common  de-ch  es     fo  fr-ca  hu     ja  mk  nl-be      pt  sl     tr \
 278 bepo
 279
 280 ifdef INSTALL_BLOBS
 281 BLOBS=bios.bin sgabios.bin vgabios.bin vgabios-cirrus.bin \
 282 vgabios-stdvga.bin vgabios-vmware.bin vgabios-qxl.bin \
 283 ppc_rom.bin openbios-sparc32 openbios-sparc64 openbios-ppc \
 284 pxe-e1000.rom pxe-eepro100.rom pxe-ne2k_pci.rom \
 285 pxe-pcnet.rom pxe-rtl8139.rom pxe-virtio.rom \
 286 qemu-icon.bmp \
 287 bamboo.dtb petalogix-s3adsp1800.dtb petalogix-ml605.dtb \
 288 multiboot.bin linuxboot.bin kvmvapic.bin \
 289 s390-zipl.rom \
 290 spapr-rtas.bin slof.bin \
 291 palcode-clipper
 292 else
 293 BLOBS=
 294 endif
 295
 296 install-doc: $(DOCS)
 297         $(INSTALL_DIR) "$(DESTDIR)$(qemu_docdir)"
 298         $(INSTALL_DATA) qemu-doc.html  qemu-tech.html "$(DESTDIR)$(qemu_docdir)"
 299         $(INSTALL_DATA) QMP/qmp-commands.txt "$(DESTDIR)$(qemu_docdir)"
 300 ifdef CONFIG_POSIX
 301         $(INSTALL_DIR) "$(DESTDIR)$(mandir)/man1"
 302         $(INSTALL_DATA) qemu.1 qemu-img.1 "$(DESTDIR)$(mandir)/man1"
 303         $(INSTALL_DIR) "$(DESTDIR)$(mandir)/man8"
 304         $(INSTALL_DATA) qemu-nbd.8 "$(DESTDIR)$(mandir)/man8"
 305 endif
 306 ifdef CONFIG_VIRTFS
 307         $(INSTALL_DIR) "$(DESTDIR)$(mandir)/man1"
 308         $(INSTALL_DATA) fsdev/virtfs-proxy-helper.1 "$(DESTDIR)$(mandir)/man1"
 309 endif
 310
 311 install-datadir:
 312         $(INSTALL_DIR) "$(DESTDIR)$(qemu_datadir)"
 313
 314 install-confdir:
 315         $(INSTALL_DIR) "$(DESTDIR)$(qemu_confdir)"
 316
 317 install-sysconfig: install-datadir install-confdir
 318         $(INSTALL_DATA) $(SRC_PATH)/sysconfigs/target/target-x86_64.conf "$(DESTDIR)$(qemu_confdir)"
 319
 320 install: all $(if $(BUILD_DOCS),install-doc) install-sysconfig install-datadir
 321         $(INSTALL_DIR) "$(DESTDIR)$(bindir)"
 322 ifneq ($(TOOLS),)
 323         $(INSTALL_PROG) $(STRIP_OPT) $(TOOLS) "$(DESTDIR)$(bindir)"
 324 endif
 325 ifneq ($(HELPERS-y),)
 326         $(INSTALL_DIR) "$(DESTDIR)$(libexecdir)"
 327         $(INSTALL_PROG) $(STRIP_OPT) $(HELPERS-y) "$(DESTDIR)$(libexecdir)"
 328 endif
 329 ifneq ($(BLOBS),)
 330         set -e; for x in $(BLOBS); do \
 331                 $(INSTALL_DATA) $(SRC_PATH)/pc-bios/$$x "$(DESTDIR)$(qemu_datadir)"; \
 332         done
 333 endif
 334         $(INSTALL_DIR) "$(DESTDIR)$(qemu_datadir)/keymaps"
 335         set -e; for x in $(KEYMAPS); do \
 336                 $(INSTALL_DATA) $(SRC_PATH)/pc-bios/keymaps/$$x "$(DESTDIR)$(qemu_datadir)/keymaps"; \
 337         done
 338         for d in $(TARGET_DIRS); do \
 339         $(MAKE) -C $$d $@ || exit 1 ; \
 340         done
 341
 342 # various test targets
 343 test speed: all
 344         $(MAKE) -C tests/tcg $@
 345
 346 .PHONY: TAGS
 347 TAGS:
 348         find "$(SRC_PATH)" -name '*.[hc]' -print0 | xargs -0 etags
 349
 350 cscope:
 351         rm -f ./cscope.*
 352         find "$(SRC_PATH)" -name "*.[chsS]" -print | sed 's,^\./,,' > ./cscope.files
 353         cscope -b
 354
 355 # documentation
 356 MAKEINFO=makeinfo
 357 MAKEINFOFLAGS=--no-headers --no-split --number-sections
 358 TEXIFLAG=$(if $(V),,--quiet)
 359 %.dvi: %.texi
 360         $(call quiet-command,texi2dvi $(TEXIFLAG) -I . $<,"  GEN   $@")
 361
 362 %.html: %.texi
 363         $(call quiet-command,LC_ALL=C $(MAKEINFO) $(MAKEINFOFLAGS) --html $< -o $@, \
 364         "  GEN   $@")
 365
 366 %.info: %.texi
 367         $(call quiet-command,$(MAKEINFO) $< -o $@,"  GEN   $@")
 368
 369 %.pdf: %.texi
 370         $(call quiet-command,texi2pdf $(TEXIFLAG) -I . $<,"  GEN   $@")
 371
 372 qemu-options.texi: $(SRC_PATH)/qemu-options.hx
 373         $(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -t < $< > $@,"  GEN   $@")
 374
 375 qemu-monitor.texi: $(SRC_PATH)/hmp-commands.hx
 376         $(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -t < $< > $@,"  GEN   $@")
 377
 378 QMP/qmp-commands.txt: $(SRC_PATH)/qmp-commands.hx
 379         $(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -q < $< > $@,"  GEN   $@")
 380
 381 qemu-img-cmds.texi: $(SRC_PATH)/qemu-img-cmds.hx
 382         $(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -t < $< > $@,"  GEN   $@")
 383
 384 qemu.1: qemu-doc.texi qemu-options.texi qemu-monitor.texi
 385         $(call quiet-command, \
 386           perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $< qemu.pod && \
 387           $(POD2MAN) --section=1 --center=" " --release=" " qemu.pod > $@, \
 388           "  GEN   $@")
 389
 390 qemu-img.1: qemu-img.texi qemu-img-cmds.texi
 391         $(call quiet-command, \
 392           perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $< qemu-img.pod && \
 393           $(POD2MAN) --section=1 --center=" " --release=" " qemu-img.pod > $@, \
 394           "  GEN   $@")
 395
 396 fsdev/virtfs-proxy-helper.1: fsdev/virtfs-proxy-helper.texi
 397         $(call quiet-command, \
 398           perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $< fsdev/virtfs-proxy-helper.pod && \
 399           $(POD2MAN) --section=1 --center=" " --release=" " fsdev/virtfs-proxy-helper.pod > $@, \
 400           "  GEN   $@")
 401
 402 qemu-nbd.8: qemu-nbd.texi
 403         $(call quiet-command, \
 404           perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $< qemu-nbd.pod && \
 405           $(POD2MAN) --section=8 --center=" " --release=" " qemu-nbd.pod > $@, \
 406           "  GEN   $@")
 407
 408 dvi: qemu-doc.dvi qemu-tech.dvi
 409 html: qemu-doc.html qemu-tech.html
 410 info: qemu-doc.info qemu-tech.info
 411 pdf: qemu-doc.pdf qemu-tech.pdf
 412
 413 qemu-doc.dvi qemu-doc.html qemu-doc.info qemu-doc.pdf: \
 414         qemu-img.texi qemu-nbd.texi qemu-options.texi \
 415         qemu-monitor.texi qemu-img-cmds.texi
 416
 417 # Add a dependency on the generated files, so that they are always
 418 # rebuilt before other object files
 419 ifneq ($(filter-out %clean,$(MAKECMDGOALS)),$(if $(MAKECMDGOALS),,fail))
 420 Makefile: $(GENERATED_HEADERS)
 421 endif
 422
 423 # Include automatically generated dependency files
 424 # Dependencies in Makefile.objs files come from our recursive subdir rules
 425 -include $(wildcard *.d tests/*.d)