Makerules

   1 # Copyright (C) 1991-1999,2000,01,02 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, write to the Free
  16 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17 # 02111-1307 USA.
  18
  19 #
  20 #       Common rules for making the GNU C library.  This file is included
  21 #       by the top-level Makefile and by all subdirectory makefiles
  22 #       (through Rules).
  23 #
  24 ifneq (,)
  25 This makefile requires GNU Make.
  26 endif
  27
  28 REQUIRED_MAKE_VERSION = 3.74
  29 REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION))
  30
  31 ifneq ($(REQUIRED_MAKE_VERSION), \
  32        $(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
  33 Wrong GNU Make version.  See above for the version needed.
  34 endif
  35
  36
  37 ifdef   subdir
  38 ..      := ../
  39 endif   # subdir
  40
  41 # If `sources' was defined by the parent makefile, undefine it so
  42 # we will later get it from wildcard search in this directory.
  43 ifneq   "$(findstring env,$(origin sources))" ""
  44 sources :=
  45 endif
  46
  47 oPATH := $(PATH)
  48 PATH := this definition should take precedence over $(oPATH)
  49 ifeq ($(PATH),$(oPATH))
  50 You must not use the -e flag when building the GNU C library.
  51 else
  52 PATH := $(oPATH)
  53 endif
  54 \f
  55 ifndef +included-Makeconfig
  56 include $(..)Makeconfig
  57 endif
  58
  59 # `configure' writes a definition of `config-sysdirs' in `config.make'.
  60 sysdirs = $(strip $(full_config_sysdirs))
  61
  62 +sysdir_pfx = $(common-objpfx)
  63
  64 export sysdirs := $(sysdirs)
  65
  66 +sysdep_dirs := $(full_config_sysdirs)
  67 ifdef objdir
  68 +sysdep_dirs := $(objdir) $(+sysdep_dirs)
  69 endif
  70
  71 # Add -I switches to get the right sysdep directories.
  72 # `+includes' in Makeconfig references $(+sysdep-includes).
  73 +sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
  74
  75 # This variable is used in ``include $(o-iterator)'' after defining
  76 # $(o-iterator-doit) to produce some desired rule using $o for the object
  77 # suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
  78 # is produced for each object suffix in use.
  79 o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
  80 \f
  81 # Include any system-specific makefiles.
  82
  83 # This is here so things in sysdep Makefiles can easily depend on foo.h as
  84 # appropriate and not worry about where foo.h comes from, which may be
  85 # system dependent and not known by that Makefile.
  86 vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
  87                                       $(+sysdep_dirs) $(..)))
  88
  89 # The same is true for RPC source files.
  90 vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
  91                                       $(+sysdep_dirs) $(..)))
  92
  93 # Some sysdep makefiles use this to distinguish being included here from
  94 # being included individually by a subdir makefile (hurd/Makefile needs this).
  95 in-Makerules := yes
  96
  97 sysdep-makefiles := $(wildcard $(full_config_sysdirs:=/Makefile))
  98 ifneq (,$(sysdep-makefiles))
  99 include $(sysdep-makefiles)
 100 endif
 101
 102
 103 # Reorder before-compile so that mach things come first, and hurd things
 104 # second, before all else.  The mach and hurd subdirectories have many
 105 # generated header files which the much of rest of the library depends on,
 106 # so it is best to build them first (and mach before hurd, at that).
 107 before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
 108                            $(before-compile)) \
 109                   $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
 110                                $(before-compile))
 111
 112 # Even before that, we need abi-versions.h which is generated right here.
 113 ifeq ($(versioning),yes)
 114 ifndef avoid-generated
 115 before-compile := $(common-objpfx)abi-versions.h $(before-compile)
 116 $(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
 117                                 $(common-objpfx)Versions.all
 118         LC_ALL=C $(AWK) -v oldest_abi=$(oldest-abi) -f $^ > $@T
 119         mv -f $@T $@
 120
 121 $(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
 122         sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
 123             $(common-objpfx)abi-versions.h > $@T
 124         mv -f $@T $@
 125 endif # avoid-generated
 126 endif # $(versioning) = yes
 127
 128
 129 # Remove existing files from `before-compile'.  Things are added there when
 130 # they must exist for dependency generation to work right, but once they
 131 # exist there is no further need for every single file to depend on them,
 132 # and those gratuitous dependencies result in many gratuitous
 133 # recompilations.
 134 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 135
 136 # Don't let any before-compile file be an intermediate and get removed.
 137 ifdef before-compile
 138 $(before-compile):
 139 endif
 140 \f
 141 # Generate an ordered list of implicit rules which find the source files in
 142 # each sysdep directory.  The old method was to use vpath to search all the
 143 # sysdep directories.  However, that had the problem that a .S file in a
 144 # later directory would be chosen over a .c file in an earlier directory,
 145 # which does not preserve the desired sysdeps ordering behavior.
 146
 147 # When making the list of .d files to include, we can't know which ones
 148 # have source in .s files, and thus do not in fact need a .d file.
 149 # So we must define rules to make .d files for .s files.
 150 define make-dummy-dep
 151 $(addprefix ln $(common-objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
 152 endef
 153 $(common-objpfx)dummy.d:
 154         echo '# .s files cannot contain includes, so they need no deps.' > $@
 155
 156 # It matters that this set of rules, for compiling from sources in
 157 # the current directory (the $srcdir/$subdir) come before the
 158 # generated sysdep rules in included from sysd-rules below.  When
 159 # compiling in the source tree, generated sources go into the current
 160 # directory, and those should be chosen before any sources in sysdeps.
 161 define o-iterator-doit
 162 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 163 endef
 164 object-suffixes-left := $(all-object-suffixes)
 165 include $(o-iterator)
 166 $(objpfx)%.d: %.S $(before-compile); $(+make-deps)
 167
 168 define o-iterator-doit
 169 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
 170 endef
 171 object-suffixes-left := $(all-object-suffixes)
 172 include $(o-iterator)
 173 $(objpfx)%.d: %.s $(common-objpfx)dummy.d; $(make-dummy-dep)
 174
 175 define o-iterator-doit
 176 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 177 endef
 178 object-suffixes-left := $(all-object-suffixes)
 179 include $(o-iterator)
 180 $(objpfx)%.d: %.c $(before-compile); $(+make-deps)
 181
 182 # Omit the objpfx rules when building in the source tree, because
 183 # objpfx is empty and so these rules just override the ones above.
 184 ifdef objpfx
 185 # Define first rules to find the source files in $(objpfx).
 186 # Generated source files will end up there.
 187 define o-iterator-doit
 188 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 189 endef
 190 object-suffixes-left := $(all-object-suffixes)
 191 include $(o-iterator)
 192 $(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
 193
 194 define o-iterator-doit
 195 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
 196 endef
 197 object-suffixes-left := $(all-object-suffixes)
 198 include $(o-iterator)
 199 $(objpfx)%.d: $(objpfx)%.s $(common-objpfx)dummy.d; $(make-dummy-dep)
 200
 201 define o-iterator-doit
 202 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 203 endef
 204 object-suffixes-left := $(all-object-suffixes)
 205 include $(o-iterator)
 206 $(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
 207 endif
 208
 209 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
 210 # patterns matching sysdep directories whose assembly source files should
 211 # be suppressed.
 212 ifdef inhibit-sysdep-asm
 213 define open-check-inhibit-asm
 214 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
 215 endef
 216 close-check-inhibit-asm = ;; esac ;
 217 endif
 218
 219 -include $(+sysdir_pfx)sysd-rules
 220 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 221 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 222 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 223 sysd-rules-force = FORCE
 224 FORCE:
 225 endif
 226 $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
 227                           $(wildcard $(foreach dir,$(sysdirs),\
 228                                                $(dir)/Makefile))\
 229                           $(sysd-rules-force)
 230         -@rm -f $@T
 231         (echo 'sysd-rules-sysdirs := $(config-sysdirs)';                      \
 232          for dir in $(config-sysdirs:%='$$(..)%'); do                         \
 233            for o in $(all-object-suffixes); do \
 234              $(open-check-inhibit-asm) \
 235              echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
 236                   \$$(compile-command.S)";                                    \
 237              echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
 238                   \$$(compile-command.s)";                                    \
 239              $(close-check-inhibit-asm) \
 240              echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
 241                   \$$(compile-command.c)";                                    \
 242            done; \
 243            $(open-check-inhibit-asm) \
 244            echo "\$$(objpfx)%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
 245                 \$$(make-dummy-dep)";                          \
 246            echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
 247                 \$$(+make-deps)";                                             \
 248            $(close-check-inhibit-asm)   \
 249            echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
 250                 \$$(+make-deps)";                                             \
 251          done;                                                                \
 252          echo 'sysd-rules-done = t') > $@T
 253         mv -f $@T $@
 254
 255 ifndef sysd-rules-done
 256 # Don't do deps until this exists, because it provides rules to make the deps.
 257 no_deps=t
 258 endif
 259
 260 # Generate version maps, but wait until sysdep-subdirs is known
 261 ifeq ($(sysd-sorted-done),t)
 262 ifeq ($(versioning),yes)
 263 -include $(common-objpfx)sysd-versions
 264 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 265 common-generated += $(version-maps)
 266 postclean-generated += sysd-versions Versions.all abi-versions.h \
 267                        Versions.def.v.i Versions.def.v Versions.v.i Versions.v
 268
 269 ifndef avoid-generated
 270 ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
 271 sysd-versions-force = FORCE
 272 FORCE:
 273 endif
 274 # See %.v/%.v.i implicit rules in Makeconfig.
 275 $(common-objpfx)Versions.def.v.i: $(..)Versions.def \
 276                                   $(wildcard $(add-ons:%=$(..)%/Versions.def))
 277 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 278                               $(common-objpfx)soversions.i \
 279                               $(common-objpfx)Versions.def.v
 280         { while read lib version setname; do \
 281             test -z "$$setname" || echo "$$lib : $$setname"; \
 282           done < $(word 2,$^); \
 283           cat $(word 3,$^); \
 284         } | LC_ALL=C $(AWK) -f $< > $@T
 285         mv -f $@T $@
 286 # See %.v/%.v.i implicit rules in Makeconfig.
 287 $(common-objpfx)Versions.v.i: $(wildcard $(all-subdirs:%=$(..)%/Versions)) \
 288                               $(wildcard $(sysdirs:%=%/Versions)) \
 289                               $(common-objpfx)abi-versions.h \
 290                               $(sysd-versions-force)
 291 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
 292                                $(common-objpfx)Versions.v \
 293                                $(..)scripts/versions.awk
 294         ( echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
 295           cat $(word 2,$^) \
 296           | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 297                             -v move_if_change='$(move-if-change)' \
 298                             -f $(word 3,$^); \
 299         ) > $@T
 300         mv -f $@T $@
 301 endif # avoid-generated
 302 endif # $(versioning) = yes
 303 endif # sysd-sorted-done
 304
 305
 306 ifndef compile-command.S
 307 compile-command.S = $(compile.S) $(OUTPUT_OPTION)
 308 endif
 309 ifndef compile-command.s
 310 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
 311 endif
 312 ifndef compile-command.c
 313 compile-command.c = $(compile.c) $(OUTPUT_OPTION)
 314 endif
 315
 316 # GCC can grok options after the file name, and it looks nicer that way.
 317 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 318 compile.S = \
 319   $(CC) $< -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 320 COMPILE.S = \
 321   $(CC) -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 322 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
 323
 324 # If we want to generate MD5 checksums for the sources do this now.
 325 ifeq ($(md5),yes)
 326 generate-md5 = ; rm -f $(@:.d=.md5); \
 327 $(CC) -E $< $(CFLAGS) $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
 328 sed '/^\#/d;/^[[:space:]]*$$/d' | md5sum > $(@:.d=.md5)
 329 else
 330 generate-md5 =
 331 endif
 332
 333 # We need this for the output to go in the right place.  It will default to
 334 # empty if make was configured to work with a cc that can't grok -c and -o
 335 # together.  You can't compile the C library with such a compiler.
 336 OUTPUT_OPTION = -o $@
 337
 338 S-CPPFLAGS = $(asm-CPPFLAGS)
 339 define +make-deps
 340 $(make-target-directory)
 341 -@rm -f $@
 342 $(+mkdep) $< $(CFLAGS) $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
 343 sed \
 344 -e 's,$(subst .,\.,$*)\.o,$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 345 $(sed-remove-objpfx) > $(@:.d=.T)
 346 mv -f $(@:.d=.T) $@ $(generate-md5)
 347 endef
 348 ifneq (,$(objpfx))
 349 # Continuation lines here are dangerous because they introduce spaces!
 350 define sed-remove-objpfx
 351 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 352 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 353 endef
 354 endif
 355 \f
 356 # Modify the list of routines we build for different targets
 357
 358 ifeq (yesyes,$(build-shared)$(elf))
 359 ifndef libc.so-version
 360 # Undefine this because it can't work when we libc.so is unversioned.
 361 static-only-routines =
 362 endif
 363 endif
 364
 365 # Bounded pointer thunks are only built for *.ob
 366 elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
 367
 368 elide-routines.oS += $(filter-out $(static-only-routines),\
 369                                   $(routines) $(aux) $(sysdep_routines)) \
 370                      $(elide-bp-thunks)
 371 elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
 372
 373 # If we have versioned code we don't need the old versions in any of the
 374 # static libraries.
 375 elide-routines.o  += $(shared-only-routines) $(elide-bp-thunks)
 376 elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
 377 elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
 378 elide-routines.ob += $(shared-only-routines)
 379 \f
 380 # Shared library building.
 381
 382 ifeq (yes,$(build-shared))
 383
 384 # Reference map file only when versioning is selected and a map file name
 385 # is given.
 386 ifeq ($(versioning),yes)
 387 map-file = $(firstword $($(@F:.so=-map)) \
 388                        $(addprefix $(common-objpfx), \
 389                                    $(filter $(@F:.so=.map),$(version-maps))))
 390 load-map-file = $(map-file:%=-Wl,--version-script=%)
 391 endif
 392
 393 # Pattern rule to build a shared object from an archive of PIC objects.
 394 # This must come after the installation rules so Make doesn't try to
 395 # build shared libraries in place from the installed *_pic.a files.
 396 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 397 # on other shared objects.
 398 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
 399 ifneq (,$(findstring aix,$(config-os)))
 400         (echo '#!'; \
 401          dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
 402 endif
 403         $(build-shlib)
 404
 405 ifeq ($(elf),yes)
 406 define build-shlib-helper
 407 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 408           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 409           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 410           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 411           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 412           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 413 endef
 414 else
 415 ifneq (,$(findstring aix,$(config-os)))
 416 define build-shlib-helper
 417 $(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
 418           $(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
 419           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 420           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 421           -L$(subst :, -L,$(rpath-link))
 422 endef
 423 else
 424 endif
 425 endif
 426
 427 ifeq (yes,$(elf))
 428 # binutils only position loadable notes into the first page for binaries,
 429 # not for shared objects
 430 define build-shlib
 431 $(build-shlib-helper) \
 432           -o $@.new $(csu-objpfx)abi-note.o -Wl,--verbose \
 433           $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
 434           sed -e '/^=========/,/^=========/!d;/^=========/d' \
 435               -e 's/^.*\.hash[  ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 436           > $@.lds
 437 rm -f $@.new
 438 $(build-shlib-helper) -o $@ -T $@.lds \
 439           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 440 rm -f $@.lds
 441 endef
 442 else
 443 ifneq (,$(findstring aix,$(config-os)))
 444 define build-shlib
 445 $(build-shlib-helper) \
 446         -o $@ \
 447         $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 448         $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
 449 endef
 450 define build-shlib
 451 $(build-shlib-helper) \
 452           $(build-shlib-objlist)
 453 endef
 454 endif
 455 endif
 456
 457 ifneq (,$(findstring aix,$(config-os)))
 458 define build-module-helper
 459 $(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
 460           $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 461           $(load-map-file) \
 462           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 463           -L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
 464 endef
 465 else
 466 define build-module-helper
 467 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 468           -B$(csu-objpfx) $(load-map-file) \
 469           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 470           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 471 endef
 472 endif
 473
 474 # This macro is similar to build-shlib but it does not define a soname
 475 # and it does not depend on the destination name to start with `lib'.
 476 ifeq (yes,$(elf))
 477 # binutils only position loadable notes into the first page for binaries,
 478 # not for shared objects
 479 define build-module
 480 $(build-module-helper) \
 481           -o $@.new $(csu-objpfx)abi-note.o -Wl,--verbose \
 482           $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
 483           sed -e '/^=========/,/^=========/!d;/^=========/d' \
 484               -e 's/^.*\.hash[  ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 485           > $@.lds
 486 rm -f $@.new
 487 $(build-module-helper) -o $@ -T $@.lds \
 488           $(csu-objpfx)abi-note.o $(build-module-objlist)
 489 rm -f $@.lds
 490 endef
 491 else
 492 ifneq (,$(findstring aix,$(config-os)))
 493 define build-module
 494 $(build-module-helper) \
 495           -o $@ \
 496           $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 497           $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
 498 endef
 499 else
 500 define build-module
 501 define build-module
 502 $(build-module-helper) \
 503           -o $@ \
 504           $(build-module-objlist)
 505 endef
 506 endif
 507 endif
 508
 509 build-module-helper-objlist = \
 510         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 511                    $(filter-out $(map-file) $(+preinit) $(+postinit),$^))
 512 whole-archive := -Wl,--whole-archive
 513
 514 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 515 build-shlib-objlist = $(build-module-helper-objlist) \
 516                       $(LDLIBS-$(@F:lib%.so=%).so)
 517
 518 # Don't try to use -lc when making libc.so itself.
 519 # Also omits crti.o and crtn.o, which we do not want
 520 # since we define our own `.init' section specially.
 521 LDFLAGS-c.so = -nostdlib -nostartfiles
 522 # But we still want to link libc.so against $(gnulib).
 523 LDLIBS-c.so += $(gnulib)
 524 # Give libc.so an entry point and make it directly runnable itself.
 525 LDFLAGS-c.so += -e __libc_main
 526 # Force the backward compatibility EH functions to be linked.
 527 LDFLAGS-c.so += -u __register_frame
 528 # Pre-link the objects of libc_pic.a so that we can locally resolve
 529 # COMMON symbols before we link against ld.so.  This is because ld.so
 530 # contains some of libc_pic.a already, which will prevent the COMMONs
 531 # from being allocated in libc.so, which introduces evil dependencies
 532 # between libc.so and ld.so, which can make it impossible to upgrade.
 533 ifeq ($(elf),yes)
 534 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 535         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 536         $(LDFLAGS-c_pic.os) -Wl,-d -Wl,--whole-archive $^
 537 # Use our own special initializer and finalizer files for libc.so.
 538 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
 539                          $(common-objpfx)libc_pic.os \
 540                          $(elfobjdir)/sofini.os \
 541                          $(elfobjdir)/interp.os $(elfobjdir)/ld.so
 542         $(build-shlib)
 543 ifeq ($(versioning),yes)
 544 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 545 endif
 546 common-generated += libc.so libc_pic.os
 547 ifdef libc.so-version
 548 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 549         $(make-link)
 550 common-generated += libc.so$(libc.so-version)
 551 endif
 552 endif
 553 else
 554 ifneq (,$(findstring aix,$(config-os)))
 555 $(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
 556         @rm -f $@
 557         (echo '#!'; \
 558          dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
 559         sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
 560             /lib/syscalls.exp > $(common-objpfx)syscalls.exp
 561         $(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
 562                   -bE:$(common-objpfx)syscalls.exp \
 563                   -bI:$(common-objpfx)syscalls.exp \
 564                   -L$(common-objpfx) -o $@ $^
 565 # AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
 566         cp $@ $(common-objpfx)shr.o
 567         $(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
 568 endif
 569 endif
 570 \f
 571 # Figure out the source filenames in this directory.
 572
 573 override sources := $(addsuffix .c,\
 574                         $(filter-out $(elided-routines),\
 575                             $(routines) $(aux) \
 576                             $(sysdep_routines)))
 577 sysdep_routines := $(sysdep_routines)
 578
 579 headers := $(headers) $(sysdep_headers)
 580
 581 # This is the list of all object files, gotten by
 582 # replacing every ".c" in `sources' with a ".o".
 583 # We also add bounded-pointer thunks, which are later
 584 # elided for all suffixes except for `.ob'.
 585 override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
 586                       $(patsubst %,$(bppfx)%.o,\
 587                         $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
 588
 589
 590 # The makefile may define $(extra-libs) with `libfoo libbar'
 591 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 592 ifdef extra-libs
 593 # extra-lib.mk is included once for each extra lib to define rules
 594 # to build it, and to add its objects to the various variables.
 595 # During its evaluation, $(lib) is set to the name of the library.
 596 extra-libs-left := $(extra-libs)
 597 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 598 endif
 599 \f
 600 +depfiles := $(sources:.c=.d) \
 601              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 602              $(addsuffix .d,$(tests) $(test-srcs))
 603 ifeq ($(build-programs),yes)
 604 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 605 endif
 606 +depfiles := $(addprefix $(objpfx),\
 607                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 608                                       $(+depfiles)))
 609
 610 ifdef +depfiles
 611 ifneq ($(no_deps),t)
 612 -include $(+depfiles)
 613 endif
 614 endif
 615 \f\f
 616 # Maximize efficiency by minimizing the number of rules.
 617 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 618 # Don't define any builtin rules.
 619 MAKEFLAGS := $(MAKEFLAGS)r
 620
 621 # Generic rule for making directories.
 622 %/:
 623 # mkdir isn't smart enough to strip a trailing /.
 624         mkdir $(@:%/=%)
 625 \f
 626 # Make sure that object files are not removed
 627 # when they are intermediates between sources and library members.
 628 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 629
 630 # Make sure that the parent library archive is never removed.
 631 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 632 \f
 633 # Use the verbose option of ar and tar when not running silently.
 634 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 635 verbose := v
 636 else                                            # -s
 637 verbose :=
 638 endif                                           # not -s
 639
 640 ARFLAGS := r$(verbose)
 641 CREATE_ARFLAGS := cru$(verbose)
 642 \f
 643 # This makes all the object files in the parent library archive.
 644
 645 .PHONY: lib lib-noranlib
 646 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 647 lib-noranlib: libobjs
 648
 649 # For object-suffix $o, the list of objects with that suffix.
 650 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 651 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 652                                                        $(elide-routines$o)),\
 653                                             $(objects))) \
 654             $(addprefix $(objpfx),$(o-objects$o))
 655
 656 others: $(addprefix $(objpfx),$(install-lib))
 657
 658 ifndef objects
 659
 660 # Create the stamp$o files to keep the parent makefile happy.
 661 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 662 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 663         $(make-target-directory)
 664         rm -f $@; > $@
 665 else
 666
 667 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 668 # timestamp file; these rules (one explicit rule is generated for each
 669 # object suffix) write a list of objects to update in the stamp file.
 670 # The parent will then actually add them all to the archive in the
 671 # archive rule, below.
 672 define o-iterator-doit
 673 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 674 endef
 675 define do-stamp
 676 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 677 mv -f $@T $@
 678 endef
 679 object-suffixes-left := $(object-suffixes-for-libc)
 680 include $(o-iterator)
 681
 682 endif
 683
 684 # Now define explicit rules to build the library archives; these depend
 685 # on the stamp files built above.
 686 define o-iterator-doit
 687 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 688                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 689 endef
 690 define do-makelib
 691 cd $(common-objdir) && \
 692 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 693 $(RANLIB) $@
 694 endef
 695 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 696 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 697 ifndef subdir
 698 $(subdirs-stamps): subdir_lib;
 699 endif
 700 object-suffixes-left = $(object-suffixes-for-libc)
 701 include $(o-iterator)
 702
 703
 704 # This makes all the object files.
 705 .PHONY: objects objs libobjs extra-objs
 706 objects objs: libobjs extra-objs
 707 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 708 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 709
 710 # Canned sequence for building an extra library archive.
 711 define build-extra-lib
 712 $(patsubst %/,cd % &&,$(objpfx)) \
 713 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 714       $(patsubst $(objpfx)%,%,$^)
 715 $(RANLIB) $@
 716 endef
 717 \f
 718 # Installation.
 719
 720 .PHONY: force-install
 721 force-install:
 722
 723 # $(install-lib) are installed from the object directory into $(libdir);
 724 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 725 # unless they also appear in $(non-lib.a).  $(install-data) are installed
 726 # as they are into $(datadir).  $(headers) are installed as they are in
 727 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 728 # are installed from the object directory into $(bindir), $(bindir) and
 729 # $(sbindir), respectively.  $(install-others) are absolute path names of
 730 # files to install; rules to install them are defined elsewhere.
 731
 732 # The simple library name to install libc.a under.
 733 # This could be defined by a sysdep Makefile.
 734 ifndef libc-name
 735 libc-name := c
 736 endif
 737
 738 define do-install
 739 $(make-target-directory)
 740 $(INSTALL_DATA) $< $@
 741 endef
 742
 743 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 744 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 745 define make-target-directory
 746 $(addprefix $(..)./scripts/mkinstalldirs ,\
 747             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 748 endef
 749
 750 # Any directory (parent or subdir) should install libc.a; this way
 751 # "make install" in a subdir is guaranteed to install everything it changes.
 752 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 753                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 754                                                      $(libprefix)$(libc-name)))
 755 install: $(installed-libcs)
 756 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 757         $(make-target-directory)
 758         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 759 # Running ranlib after installing makes the __.SYMDEF time stamp up to
 760 # date, which avoids messages from some linkers.
 761         $(RANLIB) $@
 762
 763 define do-install-program
 764 $(make-target-directory)
 765 $(INSTALL_PROGRAM) $< $@.new
 766 mv -f $@.new $@
 767 endef
 768
 769 define do-install-script
 770 $(make-target-directory)
 771 $(INSTALL_SCRIPT) $< $@.new
 772 mv -f $@.new $@
 773 endef
 774
 775 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
 776 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
 777
 778 ifeq (yes,$(build-shared))
 779 # Find which .so's have versions.
 780 versioned := $(strip $(foreach so,$(install-lib.so),\
 781                                $(patsubst %,$(so),$($(so)-version))))
 782
 783 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
 784 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
 785
 786 install-lib-nosubdir: $(install-lib.so-versioned:%=$(inst_libdir)/%) \
 787                       $(install-lib.so-unversioned:%=$(inst_slibdir)/%)
 788
 789 # Install all the unversioned shared libraries.
 790 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
 791     $(objpfx)%.so $(+force)
 792         $(do-install-program)
 793
 794 ifneq ($(findstring -s,$(LN_S)),)
 795 define make-link
 796 rm -f $@.new
 797 $(SHELL) $(..)scripts/rellns-sh $< $@.new
 798 mv -f $@.new $@
 799 endef
 800 else
 801 # If we have no symbolic links don't bother with rellns-sh.
 802 define make-link
 803 rm -f $@.new
 804 $(LN_S) $< $@.new
 805 mv -f $@.new $@
 806 endef
 807 endif
 808
 809 ifeq (yes,$(build-shared))
 810 ifeq (no,$(cross-compiling))
 811 symbolic-link-prog := $(common-objpfx)elf/sln
 812 symbolic-link-list := $(common-objpfx)elf/symlink.list
 813 define make-shlib-link
 814 echo $(<F) $@ >> $(symbolic-link-list)
 815 endef
 816 else # cross-compiling
 817 # We need a definition that can be used by elf/Makefile's install rules.
 818 symbolic-link-prog = $(LN_S)
 819 endif
 820 endif
 821 ifndef make-shlib-link
 822 define make-shlib-link
 823 rm -f $@
 824 $(LN_S) $(<F) $@
 825 endef
 826 endif
 827
 828 ifdef libc.so-version
 829 # For a library specified to be version N, install three files:
 830 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
 831 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
 832
 833 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
 834                                            $(+force)
 835         $(make-shlib-link)
 836 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
 837         $(do-install-program)
 838 install: $(inst_slibdir)/libc.so$(libc.so-version)
 839
 840 ifndef subdir
 841 # What we install as libc.so for programs to link against is in fact a
 842 # link script.  It contains references for the various libraries we need.
 843 # The libc.so object is not complete since some functions are only defined
 844 # in libc_nonshared.a.
 845 # We need to use absolute paths since otherwise local copies (if they exist)
 846 # of the files are taken by the linker.
 847 install: $(inst_libdir)/libc.so
 848 $(inst_libdir)/libc.so: $(common-objpfx)libc.so$(libc.so-version) \
 849                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
 850                                                   $(libprefix)$(libc-name)) \
 851                         $(+force)
 852         (echo '/* GNU ld script';\
 853          echo '   Use the shared library, but some functions are only in';\
 854          echo '   the static library, so try that secondarily.  */';\
 855          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
 856               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
 857               ')' \
 858         ) > $@.new
 859         mv -f $@.new $@
 860
 861 endif
 862
 863 else
 864 install: $(inst_slibdir)/libc.so
 865 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
 866         $(do-install-program)
 867 endif
 868
 869 ifneq (,$(versioned))
 870 # Produce three sets of rules as above for all the smaller versioned libraries.
 871
 872 define o-iterator-doit
 873 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
 874 endef
 875 object-suffixes-left := $(versioned)
 876 include $(o-iterator)
 877
 878 # Make symlinks in the build directory, because the versioned names might
 879 # be referenced by a DT_NEEDED in another library.
 880 define o-iterator-doit
 881 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
 882 endef
 883 object-suffixes-left := $(versioned)
 884 include $(o-iterator)
 885
 886 generated += $(foreach o,$(versioned),$o$($o-version))
 887
 888 ifeq (,$($(subdir)-version))
 889 define o-iterator-doit
 890 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
 891                                  $(+force);
 892         $$(make-shlib-link)
 893 endef
 894 object-suffixes-left := $(versioned)
 895 include $(o-iterator)
 896
 897 define o-iterator-doit
 898 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
 899         $$(do-install-program)
 900 endef
 901 object-suffixes-left := $(versioned)
 902 include $(o-iterator)
 903 else
 904 define o-iterator-doit
 905 $(inst_slibdir)/$o$($o-version): \
 906   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
 907         $$(make-shlib-link)
 908 endef
 909 object-suffixes-left := $(versioned)
 910 include $(o-iterator)
 911
 912 define o-iterator-doit
 913 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
 914         $$(do-install-program)
 915 endef
 916 object-suffixes-left := $(versioned)
 917 include $(o-iterator)
 918 endif
 919 endif
 920
 921 define do-install-so
 922 $(do-install-program)
 923 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
 924            $(filter-out %.so,$@))
 925 endef
 926
 927 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
 928 $(foreach v,$(so-versions),\
 929           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
 930                                                $(+force)
 931         $(do-install-so)
 932 $(foreach v,$(so-versions),\
 933           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
 934         $(do-install-so)
 935 endif
 936
 937 ifdef install-bin
 938 $(addprefix $(inst_bindir)/,$(install-bin)): \
 939     $(inst_bindir)/%: $(objpfx)% $(+force)
 940         $(do-install-program)
 941 endif
 942 ifdef install-bin-script
 943 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
 944     $(inst_bindir)/%: $(objpfx)% $(+force)
 945         $(do-install-script)
 946 endif
 947 ifdef install-rootsbin
 948 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
 949    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
 950         $(do-install-program)
 951 endif
 952 ifdef install-sbin
 953 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
 954     $(inst_sbindir)/%: $(objpfx)% $(+force)
 955         $(do-install-program)
 956 endif
 957 ifdef install-lib
 958 install-lib.a := $(filter lib%.a,$(install-lib))
 959 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
 960 ifdef install-lib-non.a
 961 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
 962   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
 963         $(do-install)
 964 endif
 965 ifdef install-lib.a
 966 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
 967   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
 968         $(do-install)
 969         $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
 970 endif
 971 endif
 972 ifdef install-data
 973 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
 974         $(do-install)
 975 endif
 976 headers := $(strip $(headers))
 977 ifdef headers
 978 $(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
 979         $(do-install)
 980 endif   # headers
 981
 982 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
 983         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
 984         install-data-nosubdir install-headers-nosubdir
 985 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
 986 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
 987 install-rootsbin-nosubdir: \
 988         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
 989 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
 990 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
 991                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
 992                        $(addprefix $(libprefix),$(install-lib-non.a)))
 993 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
 994 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
 995 install-others-nosubdir: $(install-others)
 996
 997 # We need all the `-nosubdir' targets so that `install' in the parent
 998 # doesn't depend on several things which each iterate over the subdirs.
 999 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1000 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1001 install-%:: install-%-nosubdir ;
1002
1003 .PHONY: install install-no-libc.a-nosubdir
1004 ifeq ($(build-programs),yes)
1005 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1006                             install-bin-nosubdir install-bin-script-nosubdir \
1007                             install-lib-nosubdir install-others-nosubdir \
1008                             install-rootsbin-nosubdir install-sbin-nosubdir
1009 else
1010 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1011                             install-lib-nosubdir install-others-nosubdir
1012 endif
1013 install: install-no-libc.a-nosubdir
1014 \f
1015 # Command to compile $< in $(objdir) using the native libraries.
1016 define native-compile
1017 $(make-target-directory)
1018 $(patsubst %/,cd % &&,$(objpfx)) \
1019 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1020             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
1021 endef
1022
1023 # Command to compile $< in $(common-objdir) using the native libraries.
1024 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
1025 define common-objdir-compile
1026 $(patsubst %/,cd % &&,$(objpfx)) \
1027 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1028             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
1029 endef
1030
1031 # We always want to use configuration definitions.
1032 # Note that this is only used for commands running in $(objpfx).
1033 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
1034
1035 # Support the GNU standard name for this target.
1036 .PHONY: check
1037 check: tests
1038
1039 ifneq (,$(tests))
1040 cpp-srcs-left = $(tests)
1041 lib := tests
1042 include $(patsubst %,$(..)cppflags-iterator.mk,$(tests))
1043 endif
1044 \f
1045 .PHONY: TAGS
1046 TAGS: $(objpfx)distinfo $(..)MakeTAGS
1047         $(MAKE) $(addprefix -f ,$^) $@
1048
1049 $(..)po/%.pot: $(objpfx)distinfo $(..)MakeTAGS FORCE
1050         $(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
1051 FORCE:
1052
1053
1054 .PHONY: echo-headers
1055 echo-headers:
1056         @echo $(headers)
1057
1058 \f
1059 # Common cleaning targets.
1060
1061 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1062 clean: common-clean
1063 mostlyclean: common-mostlyclean
1064
1065 do-tests-clean:
1066         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(test-srcs)) \
1067                                      $(addsuffix -bp.out,$(tests) $(test-srcs)))
1068
1069 # Remove the object files.
1070 common-mostlyclean:
1071         -rm -f $(addprefix $(objpfx),$(tests) $(test-srcs) $(others) \
1072                                      $(sysdep-others) stubs \
1073                                      $(addsuffix .o,$(tests) $(test-srcs) \
1074                                                     $(others) \
1075                                                     $(sysdep-others)) \
1076                                      $(addsuffix -bp,$(tests) $(test-srcs)) \
1077                                      $(addsuffix .out,$(tests) $(test-srcs)) \
1078                                      $(addsuffix -bp.out,$(tests) $(test-srcs)))
1079         -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
1080                                      $(install-lib.so) \
1081                                      $(install-lib.so:%.so=%_pic.a))
1082         -rm -f core
1083         $(rmobjs)
1084 define rmobjs
1085 $(foreach o,$(object-suffixes-for-libc),
1086 -rm -f $(objpfx)stamp$o $(o-objects))
1087 endef
1088
1089 # Also remove the dependencies and generated source files.
1090 common-clean: common-mostlyclean
1091         -rm -f $(addprefix $(objpfx),$(generated)) $(+depfiles)
1092         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1093         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1094         -rm -f $(objpfx)distinfo
1095 \f
1096 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1097 # for each function which is a stub.  We grovel over all the .d files
1098 # looking for references to <stub-tag.h>.  Then we grovel over each
1099 # referenced source file to see what stub function it defines.
1100
1101 ifdef objpfx
1102 .PHONY: stubs # The parent Makefile calls this target.
1103 stubs: $(objpfx)stubs
1104 endif
1105 s = $(sysdep_dir)/generic
1106 $(objpfx)stubs: $(+depfiles)
1107 # Use /dev/null since `...` might expand to empty.
1108         (s=`cd $s && $(PWD_P)`; \
1109          $(patsubst %/,cd % &&,$(objpfx)) \
1110          sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
1111           `sed -n -e '\@ $s/[^ ]*\.c@{; s@^.* $s/\([^ ]*\.c\).*$$@'"$$s"'/\1@; h; }' \
1112                 -e '/stub-tag\.h/{; g; p; }' \
1113                   $(patsubst $(objpfx)%,%,$^) /dev/null` \
1114              /dev/null) > $@T
1115         mv -f $@T $@
1116 \f
1117 # Make the distribution tar file.
1118
1119 .PHONY: dist
1120 dist: $(objpfx)distinfo $(..)Make-dist
1121         $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
1122
1123 # Avoid depending on source files found in sysdeps dirs,
1124 # because the references affect implicit rule selection.
1125 dist: $(filter-out %.c %.S %.s,$(distribute))
1126
1127 # We used to simply export all these variables, but that frequently made the
1128 # environment get too large.  Instead, we write all the information into
1129 # a generated makefile fragment `distinfo', and then include it with -f in
1130 # the sub-make that makes the distribution (above).
1131 $(objpfx)distinfo: Makefile $(..)Makerules \
1132                    $(wildcard $(foreach dir,$(sysdirs),$(dir)/Makefile))
1133         $(make-target-directory)
1134         $(distinfo-vars)
1135         mv -f $@.new $@
1136 .PHONY: subdir_distinfo
1137 subdir_distinfo: $(objpfx)distinfo
1138
1139 define distinfo-vars
1140 rm -f $@.new
1141 echo > $@.new 'subdir := $(subdir)'
1142 $(foreach var,subdir-dirs sources elided-routines sysdep_routines \
1143               headers sysdep_headers distribute dont_distribute generated \
1144               others tests test-srcs extra-libs $(extra-libs:%=%-routines) \
1145               versioned \
1146               $(addprefix install-,lib lib.so data bin bin-script sbin others),
1147 echo >> $@.new '$(subdir)-$(var) := $($(var))'
1148 echo >> $@.new '$(var) = $$($(subdir)-$(var))')
1149 endef
1150 \f
1151 ifneq (,$(strip $(gpl2lgpl)))
1152 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1153 # Snarf from the master source and frob the copying notice.
1154 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1155         sed -f $^ > $@-tmp
1156 # So I don't edit them by mistake.
1157         chmod a-w $@-tmp
1158         mv -f $@-tmp $@
1159 ifeq ($(with-cvs),yes)
1160         test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@
1161 endif
1162 endif
1163 endif