Makerules

   1 # Copyright (C) 1991-2002, 2003 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 # Generating headers for assembly constants.
 130 # We need this defined early to get into before-compile before
 131 # it's used in sysd-rules, below.
 132 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
 133                                            %.sym $(before-compile)
 134         $(AWK) -f $< $(filter %.sym,$^) \
 135         | $(CC) -S -o - $(CFLAGS) $(CPPFLAGS) -x c - \
 136                 -MD -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)' \
 137         | sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' > $(@:.h.d=.h)T
 138         sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
 139             $(@:.h=.h.d)T > $(@:.h=.h.d)T2
 140         rm -f $(@:.h=.h.d)T
 141         mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
 142         mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
 143 vpath %.sym $(sysdirs)
 144 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 145
 146
 147 # Make sure the subdirectory for object files gets created.
 148 ifdef objpfx
 149 ifeq (,$(wildcard $(objpfx).))
 150 before-compile += $(objpfx).
 151 $(objpfx).:
 152         $(make-target-directory)
 153 endif
 154 endif
 155
 156 # Remove existing files from `before-compile'.  Things are added there when
 157 # they must exist for dependency generation to work right, but once they
 158 # exist there is no further need for every single file to depend on them,
 159 # and those gratuitous dependencies result in many gratuitous
 160 # recompilations.
 161 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 162
 163 # Don't let any before-compile file be an intermediate and get removed.
 164 ifdef before-compile
 165 $(before-compile):
 166 endif
 167
 168 ifndef subdir
 169 # If a makefile needs to do something conditional on something that
 170 # can only be figured out from headers, write a FOO.make.c input
 171 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
 172 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
 173 #
 174 # We only generate these in the top-level makefile, to avoid any weirdness
 175 # from subdir-specific makefile tweaks creeping in on an update.
 176 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(before-compile)
 177         rm -f $@T $@.dT
 178         (echo '# Generated from $*.make.c by Makerules.'; \
 179          $(CC) $(CFLAGS) $(CPPFLAGS) -E $< \
 180                -MD -MT '$$(common-objpfx)$*.make' -MF $@.dT \
 181          | sed -n '/@@@/{s/@@@[  ]*\(.*\)@@@/\1/;s/[     ]*$$//p;}'; \
 182          echo 'common-generated += $(@F)'; \
 183          sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
 184          rm -f $@.dT) > $@T
 185         mv -f $@T $@
 186 endif
 187
 188 ifdef subdir
 189 sed-remove-dotdot := -e 's@  *\.\.\/\([^        \]*\)@ $$(..)\1@g'
 190 else
 191 sed-remove-dotdot := -e 's@  *\([^      \/$$][^         \]*\)@ $$(..)\1@g'
 192 endif
 193 \f
 194 # Generate an ordered list of implicit rules which find the source files in
 195 # each sysdep directory.  The old method was to use vpath to search all the
 196 # sysdep directories.  However, that had the problem that a .S file in a
 197 # later directory would be chosen over a .c file in an earlier directory,
 198 # which does not preserve the desired sysdeps ordering behavior.
 199
 200 # It matters that this set of rules, for compiling from sources in
 201 # the current directory (the $srcdir/$subdir) come before the
 202 # generated sysdep rules in included from sysd-rules below.  When
 203 # compiling in the source tree, generated sources go into the current
 204 # directory, and those should be chosen before any sources in sysdeps.
 205 define o-iterator-doit
 206 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 207 endef
 208 object-suffixes-left := $(all-object-suffixes)
 209 include $(o-iterator)
 210
 211 define o-iterator-doit
 212 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
 213 endef
 214 object-suffixes-left := $(all-object-suffixes)
 215 include $(o-iterator)
 216
 217 define o-iterator-doit
 218 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 219 endef
 220 object-suffixes-left := $(all-object-suffixes)
 221 include $(o-iterator)
 222
 223 # Omit the objpfx rules when building in the source tree, because
 224 # objpfx is empty and so these rules just override the ones above.
 225 ifdef objpfx
 226 # Define first rules to find the source files in $(objpfx).
 227 # Generated source files will end up there.
 228 define o-iterator-doit
 229 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 230 endef
 231 object-suffixes-left := $(all-object-suffixes)
 232 include $(o-iterator)
 233
 234 define o-iterator-doit
 235 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
 236 endef
 237 object-suffixes-left := $(all-object-suffixes)
 238 include $(o-iterator)
 239
 240 define o-iterator-doit
 241 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 242 endef
 243 object-suffixes-left := $(all-object-suffixes)
 244 include $(o-iterator)
 245 endif
 246
 247 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
 248 # patterns matching sysdep directories whose assembly source files should
 249 # be suppressed.
 250 ifdef inhibit-sysdep-asm
 251 define open-check-inhibit-asm
 252 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
 253 endef
 254 close-check-inhibit-asm = ;; esac ;
 255 endif
 256
 257 -include $(+sysdir_pfx)sysd-rules
 258 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 259 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 260 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 261 sysd-rules-force = FORCE
 262 FORCE:
 263 endif
 264 $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
 265                           $(wildcard $(foreach dir,$(sysdirs),\
 266                                                $(dir)/Makefile))\
 267                           $(sysd-rules-force)
 268         -@rm -f $@T
 269         (echo 'sysd-rules-sysdirs := $(config-sysdirs)';                      \
 270          for dir in $(config-sysdirs:%='$$(..)%'); do                         \
 271            for o in $(all-object-suffixes); do \
 272              $(open-check-inhibit-asm) \
 273              echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
 274                   \$$(compile-command.S)";                                    \
 275              echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
 276                   \$$(compile-command.s)";                                    \
 277              echo "\$$(objpfx)rtld-%$$o: $$dir/%.S \$$(before-compile); \
 278                   \$$(compile-command.S)";                                    \
 279              echo "\$$(objpfx)rtld-%$$o: $$dir/%.s \$$(before-compile); \
 280                   \$$(compile-command.s)";                                    \
 281              echo "\$$(objpfx)ptw-%$$o: $$dir/%.S \$$(before-compile); \
 282                   \$$(compile-command.S)";                                    \
 283              echo "\$$(objpfx)ptw-%$$o: $$dir/%.s \$$(before-compile); \
 284                   \$$(compile-command.s)";                                    \
 285              $(close-check-inhibit-asm) \
 286              echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
 287                   \$$(compile-command.c)";                                    \
 288              echo "\$$(objpfx)rtld-%$$o: $$dir/%.c \$$(before-compile); \
 289                   \$$(compile-command.c)";                                    \
 290              echo "\$$(objpfx)ptw-%$$o: $$dir/%.c \$$(before-compile); \
 291                   \$$(compile-command.c)";                                    \
 292            done; \
 293            echo "\$$(objpfx)m_%.S: $$dir/s_%.S; \$$(+make-include-of-dep)";   \
 294            echo "\$$(objpfx)m_%.c: $$dir/s_%.c; \$$(+make-include-of-dep)";   \
 295          done;                                                                \
 296          echo 'sysd-rules-done = t') > $@T
 297         mv -f $@T $@
 298
 299 ifndef sysd-rules-done
 300 # Don't do deps until this exists, because it provides rules to make the deps.
 301 no_deps=t
 302 endif
 303
 304 # This is used by the m_%.[Sc] pattern rules in sysd-rules.
 305 define +make-include-of-dep
 306 echo '#include <$<>' > $@T
 307 mv -f $@T $@
 308 endef
 309
 310 # Generate version maps, but wait until sysdep-subdirs is known
 311 ifeq ($(sysd-sorted-done),t)
 312 ifeq ($(versioning),yes)
 313 -include $(common-objpfx)sysd-versions
 314 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 315 common-generated += $(version-maps)
 316 postclean-generated += sysd-versions Versions.all abi-versions.h \
 317                        Versions.def.v.i Versions.def.v Versions.v.i Versions.v
 318
 319 ifndef avoid-generated
 320 ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
 321 sysd-versions-force = FORCE
 322 FORCE:
 323 endif
 324 # See %.v/%.v.i implicit rules in Makeconfig.
 325 $(common-objpfx)Versions.def.v.i: $(..)Versions.def \
 326                                   $(wildcard $(add-ons:%=$(..)%/Versions.def))
 327 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 328                               $(common-objpfx)soversions.i \
 329                               $(common-objpfx)Versions.def.v
 330         { while read lib version setname; do \
 331             test -z "$$setname" || echo "$$lib : $$setname"; \
 332           done < $(word 2,$^); \
 333           cat $(word 3,$^); \
 334         } | LC_ALL=C $(AWK) -f $< > $@T
 335         mv -f $@T $@
 336 # See %.v/%.v.i implicit rules in Makeconfig.
 337 $(common-objpfx)Versions.v.i: $(wildcard $(all-subdirs:%=$(..)%/Versions)) \
 338                               $(wildcard $(sysdirs:%=%/Versions)) \
 339                               $(common-objpfx)abi-versions.h \
 340                               $(sysd-versions-force)
 341 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
 342                                $(common-objpfx)Versions.v \
 343                                $(..)scripts/versions.awk
 344         ( echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
 345           cat $(word 2,$^) \
 346           | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 347                             -v move_if_change='$(move-if-change)' \
 348                             -f $(word 3,$^); \
 349         ) > $@T
 350         mv -f $@T $@
 351 endif # avoid-generated
 352 endif # $(versioning) = yes
 353 endif # sysd-sorted-done
 354
 355 # Generate .dT files as we compile.
 356 compile-mkdep-flags = -MD -MP -MF $@.dt
 357 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 358 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION) $(compile-mkdep-flags)
 359 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 360
 361 # GCC can grok options after the file name, and it looks nicer that way.
 362 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 363 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
 364                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 365 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
 366                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 367 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
 368
 369 # We need this for the output to go in the right place.  It will default to
 370 # empty if make was configured to work with a cc that can't grok -c and -o
 371 # together.  You can't compile the C library with such a compiler.
 372 OUTPUT_OPTION = -o $@
 373
 374 # We need the $(CFLAGS) to be in there to have the right predefines during
 375 # the dependency run for C sources.  But having it for assembly sources can
 376 # get the wrong predefines.
 377 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
 378
 379 define +make-deps
 380 $(make-target-directory)
 381 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
 382              $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed \
 383 -e 's,$(subst .,\.,$*)\.o,$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 384 $(sed-remove-objpfx) > $(@:.d=.T)
 385 mv -f $(@:.d=.T) $@ $(generate-md5)
 386 endef
 387
 388 ifneq (,$(objpfx))
 389 # Continuation lines here are dangerous because they introduce spaces!
 390 define sed-remove-objpfx
 391 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 392 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 393 endef
 394 endif
 395 \f
 396 # Modify the list of routines we build for different targets
 397
 398 ifeq (yesyes,$(build-shared)$(elf))
 399 ifndef libc.so-version
 400 # Undefine this because it can't work when we libc.so is unversioned.
 401 static-only-routines =
 402 endif
 403 endif
 404
 405 # Bounded pointer thunks are only built for *.ob
 406 elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
 407
 408 elide-routines.oS += $(filter-out $(static-only-routines),\
 409                                   $(routines) $(aux) $(sysdep_routines)) \
 410                      $(elide-bp-thunks)
 411 elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
 412
 413 # If we have versioned code we don't need the old versions in any of the
 414 # static libraries.
 415 elide-routines.o  += $(shared-only-routines) $(elide-bp-thunks)
 416 elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
 417 elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
 418 elide-routines.ob += $(shared-only-routines)
 419 \f
 420 # Shared library building.
 421
 422 ifeq (yes,$(build-shared))
 423
 424 # Reference map file only when versioning is selected and a map file name
 425 # is given.
 426 ifeq ($(versioning),yes)
 427 map-file = $(firstword $($(@F:.so=-map)) \
 428                        $(addprefix $(common-objpfx), \
 429                                    $(filter $(@F:.so=.map),$(version-maps))))
 430 load-map-file = $(map-file:%=-Wl,--version-script=%)
 431 endif
 432
 433 # Pattern rule to build a shared object from an archive of PIC objects.
 434 # This must come after the installation rules so Make doesn't try to
 435 # build shared libraries in place from the installed *_pic.a files.
 436 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 437 # on other shared objects.
 438 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
 439 ifneq (,$(findstring aix,$(config-os)))
 440         (echo '#!'; \
 441          dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
 442 endif
 443         $(build-shlib)
 444
 445 ifeq ($(elf),yes)
 446 define build-shlib-helper
 447 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
 448           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(config-LDFLAGS) \
 449           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 450           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 451           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 452           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 453           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 454 endef
 455 else
 456 ifneq (,$(findstring aix,$(config-os)))
 457 define build-shlib-helper
 458 $(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
 459           $(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
 460           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 461           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 462           -L$(subst :, -L,$(rpath-link))
 463 endef
 464 else
 465 endif
 466 endif
 467
 468 ifeq (yes,$(elf))
 469 # binutils only position loadable notes into the first page for binaries,
 470 # not for shared objects
 471 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
 472         $(LINK.o) -shared -Wl,-O1 \
 473                   $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
 474                   -Wl,--verbose 2>&1 | \
 475           sed > $@T \
 476               -e '/^=========/,/^=========/!d;/^=========/d' \
 477               -e 's/^.*\.hash[  ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 478               -e 's/^.*\*(\.dynbss).*$$/& \
 479                  PROVIDE(__start___libc_freeres_ptrs = .); \
 480                  *(__libc_freeres_ptrs) \
 481                  PROVIDE(__stop___libc_freeres_ptrs = .);/'
 482         mv -f $@T $@
 483 common-generated += shlib.lds
 484
 485 define build-shlib
 486 $(build-shlib-helper) -o $@ -T $(common-objpfx)shlib.lds \
 487           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 488 endef
 489 else
 490 ifneq (,$(findstring aix,$(config-os)))
 491 define build-shlib
 492 $(build-shlib-helper) \
 493         -o $@ \
 494         $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 495         $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
 496 endef
 497 define build-shlib
 498 $(build-shlib-helper) \
 499           $(build-shlib-objlist)
 500 endef
 501 endif
 502 endif
 503
 504 ifneq (,$(findstring aix,$(config-os)))
 505 define build-module-helper
 506 $(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
 507           $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 508           $(load-map-file) \
 509           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 510           -L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
 511 endef
 512 else
 513 define build-module-helper
 514 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 515           -B$(csu-objpfx) $(load-map-file) \
 516           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 517           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 518 endef
 519 endif
 520
 521 # This macro is similar to build-shlib but it does not define a soname
 522 # and it does not depend on the destination name to start with `lib'.
 523 ifeq (yes,$(elf))
 524 # binutils only position loadable notes into the first page for binaries,
 525 # not for shared objects
 526 define build-module
 527 $(build-module-helper) -o $@ -T $(common-objpfx)shlib.lds \
 528           $(csu-objpfx)abi-note.o $(build-module-objlist)
 529 endef
 530 else
 531 ifneq (,$(findstring aix,$(config-os)))
 532 define build-module
 533 $(build-module-helper) \
 534           -o $@ \
 535           $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 536           $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
 537 endef
 538 else
 539 define build-module
 540 define build-module
 541 $(build-module-helper) \
 542           -o $@ \
 543           $(build-module-objlist)
 544 endef
 545 endif
 546 endif
 547
 548 build-module-helper-objlist = \
 549         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 550                    $(filter-out %.lds $(map-file) $(+preinit) $(+postinit),$^))
 551 whole-archive := -Wl,--whole-archive
 552
 553 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 554 build-shlib-objlist = $(build-module-helper-objlist) \
 555                       $(LDLIBS-$(@F:lib%.so=%).so)
 556
 557 # Don't try to use -lc when making libc.so itself.
 558 # Also omits crti.o and crtn.o, which we do not want
 559 # since we define our own `.init' section specially.
 560 LDFLAGS-c.so = -nostdlib -nostartfiles
 561 # But we still want to link libc.so against $(gnulib).
 562 LDLIBS-c.so += $(gnulib)
 563 # Give libc.so an entry point and make it directly runnable itself.
 564 LDFLAGS-c.so += -e __libc_main
 565 # Force the backward compatibility EH functions to be linked.
 566 LDFLAGS-c.so += -u __register_frame
 567 # Pre-link the objects of libc_pic.a so that we can locally resolve
 568 # COMMON symbols before we link against ld.so.  This is because ld.so
 569 # contains some of libc_pic.a already, which will prevent the COMMONs
 570 # from being allocated in libc.so, which introduces evil dependencies
 571 # between libc.so and ld.so, which can make it impossible to upgrade.
 572 ifeq ($(elf),yes)
 573 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 574         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 575         $(LDFLAGS-c_pic.os) -Wl,-d -Wl,--whole-archive $^
 576 # Use our own special initializer and finalizer files for libc.so.
 577 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
 578                          $(common-objpfx)libc_pic.os \
 579                          $(elfobjdir)/sofini.os \
 580                          $(elfobjdir)/interp.os $(elfobjdir)/ld.so \
 581                          $(common-objpfx)shlib.lds
 582         $(build-shlib)
 583 ifeq ($(versioning),yes)
 584 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 585 endif
 586 common-generated += libc.so libc_pic.os
 587 ifdef libc.so-version
 588 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 589         $(make-link)
 590 common-generated += libc.so$(libc.so-version)
 591 endif
 592 endif
 593 else
 594 ifneq (,$(findstring aix,$(config-os)))
 595 $(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
 596         @rm -f $@
 597         (echo '#!'; \
 598          dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
 599         sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
 600             /lib/syscalls.exp > $(common-objpfx)syscalls.exp
 601         $(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
 602                   -bE:$(common-objpfx)syscalls.exp \
 603                   -bI:$(common-objpfx)syscalls.exp \
 604                   -L$(common-objpfx) -o $@ $^
 605 # AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
 606         cp $@ $(common-objpfx)shr.o
 607         $(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
 608 endif
 609 endif
 610 \f
 611 # Figure out the source filenames in this directory.
 612
 613 override sources := $(addsuffix .c,\
 614                         $(filter-out $(elided-routines),\
 615                             $(routines) $(aux) \
 616                             $(sysdep_routines)))
 617 sysdep_routines := $(sysdep_routines)
 618
 619 headers := $(headers) $(sysdep_headers)
 620
 621 # This is the list of all object files, gotten by
 622 # replacing every ".c" in `sources' with a ".o".
 623 # We also add bounded-pointer thunks, which are later
 624 # elided for all suffixes except for `.ob'.
 625 override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
 626                       $(patsubst %,$(bppfx)%.o,\
 627                         $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
 628
 629
 630 # The makefile may define $(extra-libs) with `libfoo libbar'
 631 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 632 ifdef extra-libs
 633 # extra-lib.mk is included once for each extra lib to define rules
 634 # to build it, and to add its objects to the various variables.
 635 # During its evaluation, $(lib) is set to the name of the library.
 636 extra-libs-left := $(extra-libs)
 637 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 638 endif
 639 \f
 640 +depfiles := $(sources:.c=.d) \
 641              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 642              $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
 643 ifeq ($(build-programs),yes)
 644 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 645 endif
 646 +depfiles := $(addprefix $(objpfx),\
 647                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 648                                       $(+depfiles)))
 649 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
 650 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
 651              $(wildcard $(all-dt-files:.dt=.d))
 652
 653 # This is a funny rule in that it removes its input file.
 654 %.d: %.dt
 655         @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
 656          mv -f $(@:.d=.T) $@ && \
 657          rm -f $<
 658
 659 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
 660 # They will be generated when they're needed, and trying too early won't work.
 661 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 662 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
 663                                                 $(+gen-as-const)))
 664
 665 ifdef +depfiles
 666 ifneq ($(no_deps),t)
 667 -include $(+depfiles)
 668 endif
 669 endif
 670 \f\f
 671 # Maximize efficiency by minimizing the number of rules.
 672 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 673 # Don't define any builtin rules.
 674 MAKEFLAGS := $(MAKEFLAGS)r
 675
 676 # Generic rule for making directories.
 677 %/:
 678 # mkdir isn't smart enough to strip a trailing /.
 679         mkdir $(@:%/=%)
 680 \f
 681 # Make sure that object files are not removed
 682 # when they are intermediates between sources and library members.
 683 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 684
 685 # Make sure that the parent library archive is never removed.
 686 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 687 \f
 688 # Use the verbose option of ar and tar when not running silently.
 689 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 690 verbose := v
 691 else                                            # -s
 692 verbose :=
 693 endif                                           # not -s
 694
 695 ARFLAGS := r$(verbose)
 696 CREATE_ARFLAGS := cru$(verbose)
 697 \f
 698 # This makes all the object files in the parent library archive.
 699
 700 .PHONY: lib lib-noranlib
 701 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 702 lib-noranlib: libobjs
 703
 704 # For object-suffix $o, the list of objects with that suffix.
 705 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 706 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 707                                                        $(elide-routines$o)),\
 708                                             $(objects))) \
 709             $(addprefix $(objpfx),$(o-objects$o))
 710
 711 others: $(addprefix $(objpfx),$(install-lib))
 712
 713 ifndef objects
 714
 715 # Create the stamp$o files to keep the parent makefile happy.
 716 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 717 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 718         $(make-target-directory)
 719         rm -f $@; > $@
 720 else
 721
 722 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 723 # timestamp file; these rules (one explicit rule is generated for each
 724 # object suffix) write a list of objects to update in the stamp file.
 725 # The parent will then actually add them all to the archive in the
 726 # archive rule, below.
 727 define o-iterator-doit
 728 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 729 endef
 730 define do-stamp
 731 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 732 mv -f $@T $@
 733 endef
 734 object-suffixes-left := $(object-suffixes-for-libc)
 735 include $(o-iterator)
 736
 737 endif
 738
 739 # Now define explicit rules to build the library archives; these depend
 740 # on the stamp files built above.
 741 define o-iterator-doit
 742 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 743                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 744 endef
 745 define do-makelib
 746 cd $(common-objdir) && \
 747 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 748 $(RANLIB) $@
 749 endef
 750 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 751 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 752 ifndef subdir
 753 $(subdirs-stamps): subdir_lib;
 754 endif
 755 object-suffixes-left = $(object-suffixes-for-libc)
 756 include $(o-iterator)
 757
 758
 759 # This makes all the object files.
 760 .PHONY: objects objs libobjs extra-objs
 761 objects objs: libobjs extra-objs
 762 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 763 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 764
 765 # Canned sequence for building an extra library archive.
 766 define build-extra-lib
 767 $(patsubst %/,cd % &&,$(objpfx)) \
 768 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 769       $(patsubst $(objpfx)%,%,$^)
 770 $(RANLIB) $@
 771 endef
 772 \f
 773 # Installation.
 774
 775 .PHONY: force-install
 776 force-install:
 777
 778 # $(install-lib) are installed from the object directory into $(libdir);
 779 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 780 # unless they also appear in $(non-lib.a).  $(install-data) are installed
 781 # as they are into $(datadir).  $(headers) are installed as they are in
 782 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 783 # are installed from the object directory into $(bindir), $(bindir) and
 784 # $(sbindir), respectively.  $(install-others) are absolute path names of
 785 # files to install; rules to install them are defined elsewhere.
 786
 787 # The simple library name to install libc.a under.
 788 # This could be defined by a sysdep Makefile.
 789 ifndef libc-name
 790 libc-name := c
 791 endif
 792
 793 define do-install
 794 $(make-target-directory)
 795 $(INSTALL_DATA) $< $@
 796 endef
 797
 798 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 799 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 800 define make-target-directory
 801 $(addprefix $(..)./scripts/mkinstalldirs ,\
 802             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 803 endef
 804
 805 # Any directory (parent or subdir) should install libc.a; this way
 806 # "make install" in a subdir is guaranteed to install everything it changes.
 807 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 808                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 809                                                      $(libprefix)$(libc-name)))
 810 install: $(installed-libcs)
 811 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 812         $(make-target-directory)
 813         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 814 # Running ranlib after installing makes the __.SYMDEF time stamp up to
 815 # date, which avoids messages from some linkers.
 816         $(RANLIB) $@
 817
 818 define do-install-program
 819 $(make-target-directory)
 820 $(INSTALL_PROGRAM) $< $@.new
 821 mv -f $@.new $@
 822 endef
 823
 824 define do-install-script
 825 $(make-target-directory)
 826 $(INSTALL_SCRIPT) $< $@.new
 827 mv -f $@.new $@
 828 endef
 829
 830 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
 831 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
 832
 833 ifeq (yes,$(build-shared))
 834 # Find which .so's have versions.
 835 versioned := $(strip $(foreach so,$(install-lib.so),\
 836                                $(patsubst %,$(so),$($(so)-version))))
 837
 838 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
 839 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
 840
 841 # For versioned libraries, we install three files:
 842 #       $(inst_libdir)/libfoo.so        -- for linking, symlink or ld script
 843 #       $(inst_slibdir)/libfoo.so.NN    -- for loading by SONAME, symlink
 844 #       $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
 845 V := $(firstword $($(subdir)-version) $(version))
 846 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
 847                       $(foreach L,$(install-lib.so-versioned),\
 848                                 $(inst_libdir)/$L \
 849                                 $(inst_slibdir)/$(L:.so=)-$V.so \
 850                                 $(inst_slibdir)/$L$($L-version))
 851
 852 # Install all the unversioned shared libraries.
 853 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
 854     $(objpfx)%.so $(+force)
 855         $(do-install-program)
 856
 857 ifneq ($(findstring -s,$(LN_S)),)
 858 define make-link
 859 rm -f $@.new
 860 $(SHELL) $(..)scripts/rellns-sh $< $@.new
 861 mv -f $@.new $@
 862 endef
 863 else
 864 # If we have no symbolic links don't bother with rellns-sh.
 865 define make-link
 866 rm -f $@.new
 867 $(LN_S) $< $@.new
 868 mv -f $@.new $@
 869 endef
 870 endif
 871
 872 ifeq (yes,$(build-shared))
 873 ifeq (no,$(cross-compiling))
 874 symbolic-link-prog := $(common-objpfx)elf/sln
 875 symbolic-link-list := $(common-objpfx)elf/symlink.list
 876 define make-shlib-link
 877 echo $(<F) $@ >> $(symbolic-link-list)
 878 endef
 879 else # cross-compiling
 880 # We need a definition that can be used by elf/Makefile's install rules.
 881 symbolic-link-prog = $(LN_S)
 882 endif
 883 endif
 884 ifndef make-shlib-link
 885 define make-shlib-link
 886 rm -f $@
 887 $(LN_S) $(<F) $@
 888 endef
 889 endif
 890
 891 ifdef libc.so-version
 892 # For a library specified to be version N, install three files:
 893 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
 894 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
 895
 896 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
 897                                            $(+force)
 898         $(make-shlib-link)
 899 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
 900         $(do-install-program)
 901 install: $(inst_slibdir)/libc.so$(libc.so-version)
 902
 903 # This fragment of linker script gives the OUTPUT_FORMAT statement
 904 # for the configuration we are building.  We put this statement into
 905 # the linker scripts we install for -lc et al so that they will not be
 906 # used by a link for a different format on a multi-architecture system.
 907 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
 908                             $(common-objpfx)config.make \
 909                             $(common-objpfx)config.h $(..)Makerules
 910         $(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
 911                   -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
 912         | sed -n -f $< > $@.new
 913         rm -f $@.so
 914         mv -f $@.new $@
 915 common-generated += format.lds
 916
 917 ifndef subdir
 918 # What we install as libc.so for programs to link against is in fact a
 919 # link script.  It contains references for the various libraries we need.
 920 # The libc.so object is not complete since some functions are only defined
 921 # in libc_nonshared.a.
 922 # We need to use absolute paths since otherwise local copies (if they exist)
 923 # of the files are taken by the linker.
 924 install: $(inst_libdir)/libc.so
 925 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
 926                         $(common-objpfx)libc.so$(libc.so-version) \
 927                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
 928                                                   $(libprefix)$(libc-name)) \
 929                         $(+force)
 930         (echo '/* GNU ld script';\
 931          echo '   Use the shared library, but some functions are only in';\
 932          echo '   the static library, so try that secondarily.  */';\
 933          cat $<; \
 934          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
 935               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
 936               ')' \
 937         ) > $@.new
 938         mv -f $@.new $@
 939
 940 endif
 941
 942 else
 943 install: $(inst_slibdir)/libc.so
 944 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
 945         $(do-install-program)
 946 endif
 947
 948 ifneq (,$(versioned))
 949 # Produce three sets of rules as above for all the smaller versioned libraries.
 950
 951 define o-iterator-doit
 952 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
 953 endef
 954 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
 955 ifneq (,$(object-suffixes-left))
 956 include $(o-iterator)
 957 endif
 958
 959 # Make symlinks in the build directory, because the versioned names might
 960 # be referenced by a DT_NEEDED in another library.
 961 define o-iterator-doit
 962 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
 963 endef
 964 object-suffixes-left := $(versioned)
 965 include $(o-iterator)
 966
 967 generated += $(foreach o,$(versioned),$o$($o-version))
 968
 969 ifeq (,$($(subdir)-version))
 970 define o-iterator-doit
 971 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
 972                                  $(+force);
 973         $$(make-shlib-link)
 974 endef
 975 object-suffixes-left := $(versioned)
 976 include $(o-iterator)
 977
 978 define o-iterator-doit
 979 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
 980         $$(do-install-program)
 981 endef
 982 object-suffixes-left := $(versioned)
 983 include $(o-iterator)
 984 else
 985 define o-iterator-doit
 986 $(inst_slibdir)/$o$($o-version): \
 987   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
 988         $$(make-shlib-link)
 989 endef
 990 object-suffixes-left := $(versioned)
 991 include $(o-iterator)
 992
 993 define o-iterator-doit
 994 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
 995         $$(do-install-program)
 996 endef
 997 object-suffixes-left := $(versioned)
 998 include $(o-iterator)
 999 endif
1000 endif
1001
1002 define do-install-so
1003 $(do-install-program)
1004 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1005            $(filter-out %.so,$@))
1006 endef
1007
1008 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1009 $(foreach v,$(so-versions),\
1010           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1011                                                $(+force)
1012         $(do-install-so)
1013 $(foreach v,$(so-versions),\
1014           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1015         $(do-install-so)
1016 endif
1017
1018 ifdef install-bin
1019 $(addprefix $(inst_bindir)/,$(install-bin)): \
1020     $(inst_bindir)/%: $(objpfx)% $(+force)
1021         $(do-install-program)
1022 endif
1023 ifdef install-bin-script
1024 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1025     $(inst_bindir)/%: $(objpfx)% $(+force)
1026         $(do-install-script)
1027 endif
1028 ifdef install-rootsbin
1029 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1030    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1031         $(do-install-program)
1032 endif
1033 ifdef install-sbin
1034 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1035     $(inst_sbindir)/%: $(objpfx)% $(+force)
1036         $(do-install-program)
1037 endif
1038 ifdef install-lib
1039 install-lib.a := $(filter lib%.a,$(install-lib))
1040 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1041 ifdef install-lib-non.a
1042 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1043   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1044         $(do-install)
1045 endif
1046 ifdef install-lib.a
1047 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1048   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1049         $(do-install)
1050         $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
1051 endif
1052 endif
1053 ifdef install-data
1054 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1055         $(do-install)
1056 endif
1057 headers := $(strip $(headers))
1058 ifdef headers
1059 $(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
1060         $(do-install)
1061 endif   # headers
1062
1063 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1064         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1065         install-data-nosubdir install-headers-nosubdir
1066 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1067 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1068 install-rootsbin-nosubdir: \
1069         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1070 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1071 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1072                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1073                        $(addprefix $(libprefix),$(install-lib-non.a)))
1074 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1075 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1076 install-others-nosubdir: $(install-others)
1077
1078 # We need all the `-nosubdir' targets so that `install' in the parent
1079 # doesn't depend on several things which each iterate over the subdirs.
1080 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1081 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1082 install-%:: install-%-nosubdir ;
1083
1084 .PHONY: install install-no-libc.a-nosubdir
1085 ifeq ($(build-programs),yes)
1086 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1087                             install-bin-nosubdir install-bin-script-nosubdir \
1088                             install-lib-nosubdir install-others-nosubdir \
1089                             install-rootsbin-nosubdir install-sbin-nosubdir
1090 else
1091 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1092                             install-lib-nosubdir install-others-nosubdir
1093 endif
1094 install: install-no-libc.a-nosubdir
1095 \f
1096 # Command to compile $< in $(objdir) using the native libraries.
1097 define native-compile
1098 $(make-target-directory)
1099 $(patsubst %/,cd % &&,$(objpfx)) \
1100 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1101             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
1102 endef
1103
1104 # Command to compile $< in $(common-objdir) using the native libraries.
1105 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
1106 define common-objdir-compile
1107 $(patsubst %/,cd % &&,$(objpfx)) \
1108 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1109             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
1110 endef
1111
1112 # We always want to use configuration definitions.
1113 # Note that this is only used for commands running in $(objpfx).
1114 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
1115
1116 # Support the GNU standard name for this target.
1117 .PHONY: check
1118 check: tests
1119 # Special target to run tests which cannot be run unconditionally.
1120 # Maintainers should use this target.
1121 .PHONY: xcheck
1122 xcheck: xtests
1123
1124 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1125 ifneq (,$(all-nonlib))
1126 cpp-srcs-left = $(all-nonlib:=.c)
1127 lib := nonlib
1128 include $(patsubst %,$(..)cppflags-iterator.mk,$(all-nonlib))
1129 endif
1130
1131 # The include magic above causes those files to use this variable for flags.
1132 CPPFLAGS-nonlib = -DNOT_IN_libc=1
1133
1134
1135 ifeq ($(versioning),yes)
1136 # Generate normalized lists of symbols, versions, and data sizes.
1137 # This is handy for checking against existing library binaries.
1138
1139 %.symlist: $(..)scripts/abilist.awk %.dynsym
1140         LC_ALL=C $(AWK) -f $^ > $@T
1141         mv -f $@T $@
1142
1143 %.dynsym: %.so
1144         $(OBJDUMP) --dynamic-syms $< > $@T
1145         mv -f $@T $@
1146
1147 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1148              $(..)abilist/%.abilist $(objpfx)%.symlist
1149         $(check-abi)
1150 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1151              $(..)abilist/%.abilist $(common-objpfx)%.symlist
1152         $(check-abi)
1153 define check-abi
1154         LC_ALL=C \
1155         $(AWK) -f $< -v 'config=$(check-abi-config)' \
1156                $(filter %.abilist,$^) \
1157         | { diff -pu0 - $(filter %.symlist,$^) $(check-abi-warn) ; }
1158 endef
1159 ifeq ($(enable-check-abi),warn)
1160 check-abi-warn = || echo '*** WARNING: $*.so failed ABI check'
1161 endif
1162
1163 ifeq ($(firstword $(sysd-sorted-done) f)$(firstword $(generating) f),tf)
1164 -include $(common-objpfx)tls.make
1165 config-tls := notls
1166 ifeq ($(use-tls),yes)
1167 config-tls := tls
1168 endif
1169 ifeq ($(use-thread),yes)
1170 config-tls := thread
1171 endif
1172 check-abi-config := \
1173   $(config-machine)-$(config-vendor)-$(config-os)/$(config-tls)
1174 endif
1175
1176 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1177               $(objpfx)%.symlist
1178         $(update-abi)
1179 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1180               $(common-objpfx)%.symlist
1181         $(update-abi)
1182 ifndef update-abi-config
1183 define update-abi
1184         @echo 'Run $(MAKE) $@ update-abi-config=REGEXP'; exit 2
1185 endef
1186 else
1187 define update-abi
1188 LC_ALL=C $(AWK) -v config='$(update-abi-config)' -f $^ \
1189          > $(..)abilist/$*.abilist.new
1190 @if cmp -s $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist 2> /dev/null; \
1191  then rm -f $(..)abilist/$*.abilist.new; \
1192       echo '+++ $(..)abilist/$*.abilist is unchanged'; \
1193  else mv -f $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist; \
1194       echo '*** Now check $*.abilist changes for correctness ***'; \
1195  fi
1196 endef
1197 endif
1198
1199 .PHONY: update-abi check-abi
1200 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1201 check-abi: $(patsubst %.so,check-abi-%,$(install-lib.so-versioned))
1202 ifdef subdir
1203 subdir_check-abi: check-abi
1204 subdir_update-abi: update-abi
1205 else
1206 check-abi: subdir_check-abi
1207 update-abi: subdir_update-abi
1208 endif
1209
1210 ifeq ($(subdir),elf)
1211 check-abi: check-abi-libc
1212 update-abi: update-abi-libc
1213 common-generated += libc.symlist
1214 endif
1215
1216 ifeq ($(build-shared),yes)
1217 ifneq ($(enable-check-abi),no)
1218 ifdef subdir
1219 tests: check-abi
1220 endif
1221 endif
1222 endif
1223
1224 endif
1225
1226 # There's no good place to put this - here will do.
1227 # The dependencies are wrong if it's run from the top level.
1228 ifeq ($(filter %posix, $(sysdirs)),)
1229 L_tmpnam  = 1
1230 TMP_MAX   = 0
1231 L_ctermid = 1
1232 L_cuserid = 1
1233 else
1234 L_tmpnam  = 20
1235 TMP_MAX   = 238328
1236 L_ctermid = 9
1237 L_cuserid = 9
1238 endif
1239 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1240
1241 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1242 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1243                    $(common-objpfx)config.make
1244         $(make-target-directory)
1245         echo '#include "$(..)posix/bits/posix1_lim.h"' |                \
1246         SUNPRO_DEPENDENCIES='$(@:st=dT) $@'                             \
1247         $(CC) $(+includes) -E -dM -xc - -o $(@:st=hT)
1248         echo '#include "$(..)misc/sys/uio.h"' |                         \
1249         SUNPRO_DEPENDENCIES='$(@:st=dT) $@'                             \
1250         $(CC) -D_LIBC=1 $(+includes) -E -dM -xc - | cat - >> $(@:st=hT)
1251 ifdef sed-remove-objpfx
1252         sed $(sed-remove-objpfx) $(@:st=dT) > $(@:st=dt)
1253         cat $(@:st=dt) >> $(@:st=d)
1254 else
1255         cat $(@:st=dT) >> $(@:st=d)
1256 endif
1257         fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`;       \
1258         filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`;    \
1259         iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`;        \
1260         fopen_max=$${fopen_max:-16};                                    \
1261         filename_max=$${filename_max:-1024};                            \
1262         if [ -z $$iov_max ]; then                                       \
1263           define_iov_max="# undef IOV_MAX";                             \
1264         else                                                            \
1265           define_iov_max="# define IOV_MAX $$iov_max";                  \
1266         fi;                                                             \
1267         sed -e "s/@FOPEN_MAX@/$$fopen_max/"                             \
1268             -e "s/@FILENAME_MAX@/$$filename_max/"                       \
1269             -e "s/@L_tmpnam@/$(L_tmpnam)/"                              \
1270             -e "s/@TMP_MAX@/$(TMP_MAX)/"                                \
1271             -e "s/@L_ctermid@/$(L_ctermid)/"                            \
1272             -e "s/@L_cuserid@/$(L_cuserid)/"                            \
1273             -e "s/@define_IOV_MAX@/$$define_iov_max/"                   \
1274             $< > $(@:st=h.new)
1275         $(move-if-change) $(@:st=h.new) $(@:st=h)
1276 # Remove these last so that they can be examined if something went wrong.
1277         rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1278         touch $@
1279 # Get dependencies.
1280 ifndef no_deps
1281 -include $(stdio_lim:h=d)
1282 endif
1283 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1284 \f
1285 .PHONY: TAGS
1286 TAGS: $(objpfx)distinfo $(..)MakeTAGS
1287         $(MAKE) $(addprefix -f ,$^) $@
1288
1289 $(..)po/%.pot: $(objpfx)distinfo $(..)MakeTAGS FORCE
1290         $(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
1291 FORCE:
1292
1293
1294 .PHONY: echo-headers
1295 echo-headers:
1296         @echo $(headers)
1297
1298 \f
1299 # Common cleaning targets.
1300
1301 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1302 clean: common-clean
1303 mostlyclean: common-mostlyclean
1304
1305 do-tests-clean:
1306         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1307                                                       $(test-srcs)) \
1308                                      $(addsuffix -bp.out,$(tests) $(xtests) \
1309                                                          $(test-srcs)))
1310
1311 # Remove the object files.
1312 common-mostlyclean:
1313         -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1314                                      $(others) $(sysdep-others) stubs \
1315                                      $(addsuffix .o,$(tests) $(xtests) \
1316                                                     $(test-srcs) $(others) \
1317                                                     $(sysdep-others)) \
1318                                      $(addsuffix -bp,$(tests) $(xtests) \
1319                                                      $(test-srcs)) \
1320                                      $(addsuffix .out,$(tests) $(xtests) \
1321                                                       $(test-srcs)) \
1322                                      $(addsuffix -bp.out,$(tests) $(xtests) \
1323                                                          $(test-srcs)))
1324         -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
1325                                      $(install-lib.so) \
1326                                      $(install-lib.so:%.so=%_pic.a))
1327         -rm -f core
1328         -rm -f $(objpfx)rtld-*.os
1329         $(rmobjs)
1330 define rmobjs
1331 $(foreach o,$(object-suffixes-for-libc),
1332 -rm -f $(objpfx)stamp$o $(o-objects))
1333 endef
1334
1335 # Also remove the dependencies and generated source files.
1336 common-clean: common-mostlyclean
1337         -rm -f $(addprefix $(objpfx),$(generated))
1338         -rm -f $(objpfx)*.d $(objpfx)*.dt
1339         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1340         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1341         -rm -f $(objpfx)distinfo
1342 \f
1343 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1344 # for each function which is a stub.  We grovel over all the .d files
1345 # looking for references to <stub-tag.h>.  Then we grovel over each
1346 # referenced source file to see what stub function it defines.
1347
1348 ifdef objpfx
1349 .PHONY: stubs # The parent Makefile calls this target.
1350 stubs: $(objpfx)stubs
1351 endif
1352 $(objpfx)stubs: $(+depfiles)
1353 # Use /dev/null since `...` might expand to empty.
1354         (s=`cd $(sysdep_dir) && $(PWD_P)`; \
1355          $(patsubst %/,cd % &&,$(objpfx)) \
1356          sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
1357           `sed -n -e 's@$(sysdep_dir)/@'"$$s"'/@g' \
1358                   -e 's@\$$(common-objpfx)@$(..)@g' -e 's@\$$(objpfx)@@g' \
1359                   -e '/:  *[^ ]/{s@^.*: *\([^ ]*\) .*$$@\1@; h; }' \
1360                   -e '/:$$/d' \
1361                   -e '/stub-tag\.h/{; g; p; }' \
1362                   $(patsubst $(objpfx)%,%,$^) /dev/null` \
1363              /dev/null) > $@T
1364         mv -f $@T $@
1365 \f
1366 # Make the distribution tar file.
1367
1368 .PHONY: dist
1369 dist: $(objpfx)distinfo $(..)Make-dist
1370         $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
1371
1372 # Avoid depending on source files found in sysdeps dirs,
1373 # because the references affect implicit rule selection.
1374 dist: $(filter-out %.c %.S %.s,$(distribute))
1375
1376 # We used to simply export all these variables, but that frequently made the
1377 # environment get too large.  Instead, we write all the information into
1378 # a generated makefile fragment `distinfo', and then include it with -f in
1379 # the sub-make that makes the distribution (above).
1380 $(objpfx)distinfo: Makefile $(..)Makerules \
1381                    $(wildcard $(foreach dir,$(sysdirs),$(dir)/Makefile))
1382         $(make-target-directory)
1383         $(distinfo-vars)
1384         mv -f $@.new $@
1385 .PHONY: subdir_distinfo
1386 subdir_distinfo: $(objpfx)distinfo
1387
1388 define distinfo-vars
1389 rm -f $@.new
1390 echo > $@.new 'subdir := $(subdir)'
1391 $(foreach var,subdir-dirs sources elided-routines sysdep_routines \
1392               headers sysdep_headers distribute dont_distribute generated \
1393               others tests xtests test-srcs extra-libs versioned \
1394               $(extra-libs:%=%-routines) \
1395               $(addprefix install-,lib lib.so data bin bin-script sbin others),
1396 echo >> $@.new '$(subdir)-$(var) := $($(var))'
1397 echo >> $@.new '$(var) = $$($(subdir)-$(var))')
1398 endef
1399 \f
1400 ifneq (,$(strip $(gpl2lgpl)))
1401 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1402 # Snarf from the master source and frob the copying notice.
1403 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1404         sed -f $^ > $@-tmp
1405 # So I don't edit them by mistake.
1406         chmod a-w $@-tmp
1407         mv -f $@-tmp $@
1408 ifeq ($(with-cvs),yes)
1409         test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@
1410 endif
1411 endif
1412 endif
1413
1414 # Local Variables:
1415 # mode: makefile
1416 # End: