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 # When we have no deps pass doing it, then make sure the subdirectory
 129 # for object files gets created.
 130 ifdef no_deps
 131 ifdef objpfx
 132 before-compile += $(objpfx).
 133 $(objpfx).:
 134         $(make-target-directory)
 135 endif
 136 endif
 137
 138 # Remove existing files from `before-compile'.  Things are added there when
 139 # they must exist for dependency generation to work right, but once they
 140 # exist there is no further need for every single file to depend on them,
 141 # and those gratuitous dependencies result in many gratuitous
 142 # recompilations.
 143 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 144
 145 # Don't let any before-compile file be an intermediate and get removed.
 146 ifdef before-compile
 147 $(before-compile):
 148 endif
 149
 150 # If a makefile needs to do something conditional on something that
 151 # can only be figured out from headers, write a FOO.make.c input
 152 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
 153 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
 154 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules
 155         rm -f $@T $@.dT
 156         (echo '# Generated from $*.make.c by Makerules.'; \
 157          SUNPRO_DEPENDENCIES='$@.dT $$(common-objpfx)$*.make' \
 158          $(CC) $(CFLAGS) $(CPPFLAGS) -E $< \
 159          | sed -n '/@@@/{s/@@@[  ]*\(.*\)@@@/\1/;s/[     ]*$$//p;}'; \
 160          echo 'common-generated += $(@F)'; \
 161          sed $(sed-remove-objpfx) $@.dT; rm -f $@.dT) > $@T
 162         mv -f $@T $@
 163 \f
 164 # Generate an ordered list of implicit rules which find the source files in
 165 # each sysdep directory.  The old method was to use vpath to search all the
 166 # sysdep directories.  However, that had the problem that a .S file in a
 167 # later directory would be chosen over a .c file in an earlier directory,
 168 # which does not preserve the desired sysdeps ordering behavior.
 169
 170 # When making the list of .d files to include, we can't know which ones
 171 # have source in .s files, and thus do not in fact need a .d file.
 172 # So we must define rules to make .d files for .s files.
 173 define make-dummy-dep
 174 $(addprefix ln $(common-objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
 175 endef
 176 $(common-objpfx)dummy.d:
 177         echo '# .s files cannot contain includes, so they need no deps.' > $@
 178
 179 # It matters that this set of rules, for compiling from sources in
 180 # the current directory (the $srcdir/$subdir) come before the
 181 # generated sysdep rules in included from sysd-rules below.  When
 182 # compiling in the source tree, generated sources go into the current
 183 # directory, and those should be chosen before any sources in sysdeps.
 184 define o-iterator-doit
 185 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 186 endef
 187 object-suffixes-left := $(all-object-suffixes)
 188 include $(o-iterator)
 189 $(objpfx)%.d: %.S $(before-compile); $(+make-deps)
 190
 191 define o-iterator-doit
 192 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
 193 endef
 194 object-suffixes-left := $(all-object-suffixes)
 195 include $(o-iterator)
 196 $(objpfx)%.d: %.s $(common-objpfx)dummy.d; $(make-dummy-dep)
 197
 198 define o-iterator-doit
 199 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 200 endef
 201 object-suffixes-left := $(all-object-suffixes)
 202 include $(o-iterator)
 203 $(objpfx)%.d: %.c $(before-compile); $(+make-deps)
 204
 205 # Omit the objpfx rules when building in the source tree, because
 206 # objpfx is empty and so these rules just override the ones above.
 207 ifdef objpfx
 208 # Define first rules to find the source files in $(objpfx).
 209 # Generated source files will end up there.
 210 define o-iterator-doit
 211 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 212 endef
 213 object-suffixes-left := $(all-object-suffixes)
 214 include $(o-iterator)
 215 $(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
 216
 217 define o-iterator-doit
 218 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
 219 endef
 220 object-suffixes-left := $(all-object-suffixes)
 221 include $(o-iterator)
 222 $(objpfx)%.d: $(objpfx)%.s $(common-objpfx)dummy.d; $(make-dummy-dep)
 223
 224 define o-iterator-doit
 225 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 226 endef
 227 object-suffixes-left := $(all-object-suffixes)
 228 include $(o-iterator)
 229 $(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
 230 endif
 231
 232 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
 233 # patterns matching sysdep directories whose assembly source files should
 234 # be suppressed.
 235 ifdef inhibit-sysdep-asm
 236 define open-check-inhibit-asm
 237 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
 238 endef
 239 close-check-inhibit-asm = ;; esac ;
 240 endif
 241
 242 -include $(+sysdir_pfx)sysd-rules
 243 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 244 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 245 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 246 sysd-rules-force = FORCE
 247 FORCE:
 248 endif
 249 $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
 250                           $(wildcard $(foreach dir,$(sysdirs),\
 251                                                $(dir)/Makefile))\
 252                           $(sysd-rules-force)
 253         -@rm -f $@T
 254         (echo 'sysd-rules-sysdirs := $(config-sysdirs)';                      \
 255          for dir in $(config-sysdirs:%='$$(..)%'); do                         \
 256            for o in $(all-object-suffixes); do \
 257              $(open-check-inhibit-asm) \
 258              echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
 259                   \$$(compile-command.S)";                                    \
 260              echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
 261                   \$$(compile-command.s)";                                    \
 262              echo "\$$(objpfx)rtld-%$$o: $$dir/%.S \$$(before-compile); \
 263                   \$$(compile-command.S)";                                    \
 264              echo "\$$(objpfx)rtld-%$$o: $$dir/%.s \$$(before-compile); \
 265                   \$$(compile-command.s)";                                    \
 266              echo "\$$(objpfx)ptw-%$$o: $$dir/%.S \$$(before-compile); \
 267                   \$$(compile-command.S)";                                    \
 268              echo "\$$(objpfx)ptw-%$$o: $$dir/%.s \$$(before-compile); \
 269                   \$$(compile-command.s)";                                    \
 270              $(close-check-inhibit-asm) \
 271              echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
 272                   \$$(compile-command.c)";                                    \
 273              echo "\$$(objpfx)rtld-%$$o: $$dir/%.c \$$(before-compile); \
 274                   \$$(compile-command.c)";                                    \
 275              echo "\$$(objpfx)ptw-%$$o: $$dir/%.c \$$(before-compile); \
 276                   \$$(compile-command.c)";                                    \
 277            done; \
 278            $(open-check-inhibit-asm) \
 279            echo "\$$(objpfx)%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
 280                 \$$(make-dummy-dep)";                          \
 281            echo "\$$(objpfx)rtld-%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
 282                 \$$(make-dummy-dep)";                          \
 283            echo "\$$(objpfx)ptw-%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
 284                 \$$(make-dummy-dep)";                          \
 285            echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
 286                 \$$(+make-deps)";                                             \
 287            echo "\$$(objpfx)rtld-%.d: $$dir/%.S \$$(before-compile); \
 288                 \$$(+make-deps)";                                             \
 289            echo "\$$(objpfx)ptw-%.d: $$dir/%.S \$$(before-compile); \
 290                 \$$(+make-deps)";                                             \
 291            $(close-check-inhibit-asm)   \
 292            echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
 293                 \$$(+make-deps)";                                             \
 294            echo "\$$(objpfx)rtld-%.d: $$dir/%.c \$$(before-compile); \
 295                 \$$(+make-deps)";                                             \
 296            echo "\$$(objpfx)ptw-%.d: $$dir/%.c \$$(before-compile); \
 297                 \$$(+make-deps)";                                             \
 298            echo "\$$(objpfx)m_%.S: $$dir/s_%.S; \$$(+make-include-of-dep)";   \
 299            echo "\$$(objpfx)m_%.c: $$dir/s_%.c; \$$(+make-include-of-dep)";   \
 300          done;                                                                \
 301          echo 'sysd-rules-done = t') > $@T
 302         mv -f $@T $@
 303
 304 ifndef sysd-rules-done
 305 # Don't do deps until this exists, because it provides rules to make the deps.
 306 no_deps=t
 307 endif
 308
 309 # This is used by the m_%.[Sc] pattern rules in sysd-rules.
 310 define +make-include-of-dep
 311 echo '#include <$<>' > $@T
 312 mv -f $@T $@
 313 endef
 314
 315 # Generate version maps, but wait until sysdep-subdirs is known
 316 ifeq ($(sysd-sorted-done),t)
 317 ifeq ($(versioning),yes)
 318 -include $(common-objpfx)sysd-versions
 319 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 320 common-generated += $(version-maps)
 321 postclean-generated += sysd-versions Versions.all abi-versions.h \
 322                        Versions.def.v.i Versions.def.v Versions.v.i Versions.v
 323
 324 ifndef avoid-generated
 325 ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
 326 sysd-versions-force = FORCE
 327 FORCE:
 328 endif
 329 # See %.v/%.v.i implicit rules in Makeconfig.
 330 $(common-objpfx)Versions.def.v.i: $(..)Versions.def \
 331                                   $(wildcard $(add-ons:%=$(..)%/Versions.def))
 332 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 333                               $(common-objpfx)soversions.i \
 334                               $(common-objpfx)Versions.def.v
 335         { while read lib version setname; do \
 336             test -z "$$setname" || echo "$$lib : $$setname"; \
 337           done < $(word 2,$^); \
 338           cat $(word 3,$^); \
 339         } | LC_ALL=C $(AWK) -f $< > $@T
 340         mv -f $@T $@
 341 # See %.v/%.v.i implicit rules in Makeconfig.
 342 $(common-objpfx)Versions.v.i: $(wildcard $(all-subdirs:%=$(..)%/Versions)) \
 343                               $(wildcard $(sysdirs:%=%/Versions)) \
 344                               $(common-objpfx)abi-versions.h \
 345                               $(sysd-versions-force)
 346 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
 347                                $(common-objpfx)Versions.v \
 348                                $(..)scripts/versions.awk
 349         ( echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
 350           cat $(word 2,$^) \
 351           | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 352                             -v move_if_change='$(move-if-change)' \
 353                             -f $(word 3,$^); \
 354         ) > $@T
 355         mv -f $@T $@
 356 endif # avoid-generated
 357 endif # $(versioning) = yes
 358 endif # sysd-sorted-done
 359
 360
 361 ifndef compile-command.S
 362 compile-command.S = $(compile.S) $(OUTPUT_OPTION)
 363 endif
 364 ifndef compile-command.s
 365 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
 366 endif
 367 ifndef compile-command.c
 368 compile-command.c = $(compile.c) $(OUTPUT_OPTION)
 369 endif
 370
 371 # GCC can grok options after the file name, and it looks nicer that way.
 372 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 373 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 374 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 375 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
 376
 377 # If we want to generate MD5 checksums for the sources do this now.
 378 ifeq ($(md5),yes)
 379 generate-md5 = ; rm -f $(@:.d=.md5); \
 380 $(CC) -E $< $(CFLAGS) $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | \
 381 sed '/^\#/d;/^[[:space:]]*$$/d' | md5sum > $(@:.d=.md5)
 382 else
 383 generate-md5 =
 384 endif
 385
 386 # We need this for the output to go in the right place.  It will default to
 387 # empty if make was configured to work with a cc that can't grok -c and -o
 388 # together.  You can't compile the C library with such a compiler.
 389 OUTPUT_OPTION = -o $@
 390
 391 # We need the $(CFLAGS) to be in there to have the right predefines during
 392 # the dependency run for C sources.  But having it for assembly sources can
 393 # get the wrong predefines.
 394 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
 395 define +make-deps
 396 $(make-target-directory)
 397 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
 398              $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed \
 399 -e 's,$(subst .,\.,$*)\.o,$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 400 $(sed-remove-objpfx) > $(@:.d=.T)
 401 mv -f $(@:.d=.T) $@ $(generate-md5)
 402 endef
 403 ifneq (,$(objpfx))
 404 # Continuation lines here are dangerous because they introduce spaces!
 405 define sed-remove-objpfx
 406 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 407 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 408 endef
 409 endif
 410 \f
 411 # Modify the list of routines we build for different targets
 412
 413 ifeq (yesyes,$(build-shared)$(elf))
 414 ifndef libc.so-version
 415 # Undefine this because it can't work when we libc.so is unversioned.
 416 static-only-routines =
 417 endif
 418 endif
 419
 420 # Bounded pointer thunks are only built for *.ob
 421 elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
 422
 423 elide-routines.oS += $(filter-out $(static-only-routines),\
 424                                   $(routines) $(aux) $(sysdep_routines)) \
 425                      $(elide-bp-thunks)
 426 elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
 427
 428 # If we have versioned code we don't need the old versions in any of the
 429 # static libraries.
 430 elide-routines.o  += $(shared-only-routines) $(elide-bp-thunks)
 431 elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
 432 elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
 433 elide-routines.ob += $(shared-only-routines)
 434 \f
 435 # Shared library building.
 436
 437 ifeq (yes,$(build-shared))
 438
 439 # Reference map file only when versioning is selected and a map file name
 440 # is given.
 441 ifeq ($(versioning),yes)
 442 map-file = $(firstword $($(@F:.so=-map)) \
 443                        $(addprefix $(common-objpfx), \
 444                                    $(filter $(@F:.so=.map),$(version-maps))))
 445 load-map-file = $(map-file:%=-Wl,--version-script=%)
 446 endif
 447
 448 # Pattern rule to build a shared object from an archive of PIC objects.
 449 # This must come after the installation rules so Make doesn't try to
 450 # build shared libraries in place from the installed *_pic.a files.
 451 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 452 # on other shared objects.
 453 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
 454 ifneq (,$(findstring aix,$(config-os)))
 455         (echo '#!'; \
 456          dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
 457 endif
 458         $(build-shlib)
 459
 460 ifeq ($(elf),yes)
 461 define build-shlib-helper
 462 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
 463           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(config-LDFLAGS) \
 464           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 465           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 466           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 467           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 468           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 469 endef
 470 else
 471 ifneq (,$(findstring aix,$(config-os)))
 472 define build-shlib-helper
 473 $(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
 474           $(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
 475           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 476           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 477           -L$(subst :, -L,$(rpath-link))
 478 endef
 479 else
 480 endif
 481 endif
 482
 483 ifeq (yes,$(elf))
 484 # binutils only position loadable notes into the first page for binaries,
 485 # not for shared objects
 486 define build-shlib
 487 $(build-shlib-helper) \
 488           -o $@.new $(csu-objpfx)abi-note.o -Wl,--verbose \
 489           $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
 490           sed -e '/^=========/,/^=========/!d;/^=========/d' \
 491               -e 's/^.*\.hash[  ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 492               $(LDSEDCMD-$(@F:lib%.so=%).so) > $@.lds
 493 rm -f $@.new
 494 $(build-shlib-helper) -o $@ -T $@.lds \
 495           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 496 rm -f $@.lds
 497 endef
 498 else
 499 ifneq (,$(findstring aix,$(config-os)))
 500 define build-shlib
 501 $(build-shlib-helper) \
 502         -o $@ \
 503         $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 504         $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
 505 endef
 506 define build-shlib
 507 $(build-shlib-helper) \
 508           $(build-shlib-objlist)
 509 endef
 510 endif
 511 endif
 512
 513 ifneq (,$(findstring aix,$(config-os)))
 514 define build-module-helper
 515 $(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
 516           $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 517           $(load-map-file) \
 518           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 519           -L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
 520 endef
 521 else
 522 define build-module-helper
 523 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 524           -B$(csu-objpfx) $(load-map-file) \
 525           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 526           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 527 endef
 528 endif
 529
 530 # This macro is similar to build-shlib but it does not define a soname
 531 # and it does not depend on the destination name to start with `lib'.
 532 ifeq (yes,$(elf))
 533 # binutils only position loadable notes into the first page for binaries,
 534 # not for shared objects
 535 define build-module
 536 $(build-module-helper) \
 537           -o $@.new $(csu-objpfx)abi-note.o -Wl,--verbose \
 538           $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
 539           sed -e '/^=========/,/^=========/!d;/^=========/d' \
 540               -e 's/^.*\.hash[  ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 541           > $@.lds
 542 rm -f $@.new
 543 $(build-module-helper) -o $@ -T $@.lds \
 544           $(csu-objpfx)abi-note.o $(build-module-objlist)
 545 rm -f $@.lds
 546 endef
 547 else
 548 ifneq (,$(findstring aix,$(config-os)))
 549 define build-module
 550 $(build-module-helper) \
 551           -o $@ \
 552           $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 553           $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
 554 endef
 555 else
 556 define build-module
 557 define build-module
 558 $(build-module-helper) \
 559           -o $@ \
 560           $(build-module-objlist)
 561 endef
 562 endif
 563 endif
 564
 565 build-module-helper-objlist = \
 566         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 567                    $(filter-out $(map-file) $(+preinit) $(+postinit),$^))
 568 whole-archive := -Wl,--whole-archive
 569
 570 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 571 build-shlib-objlist = $(build-module-helper-objlist) \
 572                       $(LDLIBS-$(@F:lib%.so=%).so)
 573
 574 # Don't try to use -lc when making libc.so itself.
 575 # Also omits crti.o and crtn.o, which we do not want
 576 # since we define our own `.init' section specially.
 577 LDFLAGS-c.so = -nostdlib -nostartfiles
 578 # But we still want to link libc.so against $(gnulib).
 579 LDLIBS-c.so += $(gnulib)
 580 # Give libc.so an entry point and make it directly runnable itself.
 581 LDFLAGS-c.so += -e __libc_main
 582 # Force the backward compatibility EH functions to be linked.
 583 LDFLAGS-c.so += -u __register_frame
 584 # Pre-link the objects of libc_pic.a so that we can locally resolve
 585 # COMMON symbols before we link against ld.so.  This is because ld.so
 586 # contains some of libc_pic.a already, which will prevent the COMMONs
 587 # from being allocated in libc.so, which introduces evil dependencies
 588 # between libc.so and ld.so, which can make it impossible to upgrade.
 589 ifeq ($(elf),yes)
 590 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 591         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 592         $(LDFLAGS-c_pic.os) -Wl,-d -Wl,--whole-archive $^
 593 LDSEDCMD-c.so = -e 's/^.*\*(\.dynbss).*$$/& __start___libc_freeres_ptrs = .; *(__libc_freeres_ptrs) __stop___libc_freeres_ptrs = .;/'
 594 # Use our own special initializer and finalizer files for libc.so.
 595 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
 596                          $(common-objpfx)libc_pic.os \
 597                          $(elfobjdir)/sofini.os \
 598                          $(elfobjdir)/interp.os $(elfobjdir)/ld.so
 599         $(build-shlib)
 600 ifeq ($(versioning),yes)
 601 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 602 endif
 603 common-generated += libc.so libc_pic.os
 604 ifdef libc.so-version
 605 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 606         $(make-link)
 607 common-generated += libc.so$(libc.so-version)
 608 endif
 609 endif
 610 else
 611 ifneq (,$(findstring aix,$(config-os)))
 612 $(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
 613         @rm -f $@
 614         (echo '#!'; \
 615          dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
 616         sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
 617             /lib/syscalls.exp > $(common-objpfx)syscalls.exp
 618         $(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
 619                   -bE:$(common-objpfx)syscalls.exp \
 620                   -bI:$(common-objpfx)syscalls.exp \
 621                   -L$(common-objpfx) -o $@ $^
 622 # AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
 623         cp $@ $(common-objpfx)shr.o
 624         $(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
 625 endif
 626 endif
 627 \f
 628 # Figure out the source filenames in this directory.
 629
 630 override sources := $(addsuffix .c,\
 631                         $(filter-out $(elided-routines),\
 632                             $(routines) $(aux) \
 633                             $(sysdep_routines)))
 634 sysdep_routines := $(sysdep_routines)
 635
 636 headers := $(headers) $(sysdep_headers)
 637
 638 # This is the list of all object files, gotten by
 639 # replacing every ".c" in `sources' with a ".o".
 640 # We also add bounded-pointer thunks, which are later
 641 # elided for all suffixes except for `.ob'.
 642 override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
 643                       $(patsubst %,$(bppfx)%.o,\
 644                         $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
 645
 646
 647 # The makefile may define $(extra-libs) with `libfoo libbar'
 648 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 649 ifdef extra-libs
 650 # extra-lib.mk is included once for each extra lib to define rules
 651 # to build it, and to add its objects to the various variables.
 652 # During its evaluation, $(lib) is set to the name of the library.
 653 extra-libs-left := $(extra-libs)
 654 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 655 endif
 656 \f
 657 +depfiles := $(sources:.c=.d) \
 658              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 659              $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
 660 ifeq ($(build-programs),yes)
 661 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 662 endif
 663 +depfiles := $(addprefix $(objpfx),\
 664                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 665                                       $(+depfiles))) \
 666              $(addprefix $(common-objpfx),$(gen-as-const-headers:.sym=.h.d))
 667
 668 ifdef +depfiles
 669 ifneq ($(no_deps),t)
 670 -include $(+depfiles)
 671 endif
 672 endif
 673 \f\f
 674 # Maximize efficiency by minimizing the number of rules.
 675 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 676 # Don't define any builtin rules.
 677 MAKEFLAGS := $(MAKEFLAGS)r
 678
 679 # Generic rule for making directories.
 680 %/:
 681 # mkdir isn't smart enough to strip a trailing /.
 682         mkdir $(@:%/=%)
 683 \f
 684 # Make sure that object files are not removed
 685 # when they are intermediates between sources and library members.
 686 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 687
 688 # Make sure that the parent library archive is never removed.
 689 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 690 \f
 691 # Use the verbose option of ar and tar when not running silently.
 692 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 693 verbose := v
 694 else                                            # -s
 695 verbose :=
 696 endif                                           # not -s
 697
 698 ARFLAGS := r$(verbose)
 699 CREATE_ARFLAGS := cru$(verbose)
 700 \f
 701 # This makes all the object files in the parent library archive.
 702
 703 .PHONY: lib lib-noranlib
 704 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 705 lib-noranlib: libobjs
 706
 707 # For object-suffix $o, the list of objects with that suffix.
 708 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 709 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 710                                                        $(elide-routines$o)),\
 711                                             $(objects))) \
 712             $(addprefix $(objpfx),$(o-objects$o))
 713
 714 others: $(addprefix $(objpfx),$(install-lib))
 715
 716 ifndef objects
 717
 718 # Create the stamp$o files to keep the parent makefile happy.
 719 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 720 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 721         $(make-target-directory)
 722         rm -f $@; > $@
 723 else
 724
 725 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 726 # timestamp file; these rules (one explicit rule is generated for each
 727 # object suffix) write a list of objects to update in the stamp file.
 728 # The parent will then actually add them all to the archive in the
 729 # archive rule, below.
 730 define o-iterator-doit
 731 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 732 endef
 733 define do-stamp
 734 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 735 mv -f $@T $@
 736 endef
 737 object-suffixes-left := $(object-suffixes-for-libc)
 738 include $(o-iterator)
 739
 740 endif
 741
 742 # Now define explicit rules to build the library archives; these depend
 743 # on the stamp files built above.
 744 define o-iterator-doit
 745 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 746                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 747 endef
 748 define do-makelib
 749 cd $(common-objdir) && \
 750 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 751 $(RANLIB) $@
 752 endef
 753 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 754 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 755 ifndef subdir
 756 $(subdirs-stamps): subdir_lib;
 757 endif
 758 object-suffixes-left = $(object-suffixes-for-libc)
 759 include $(o-iterator)
 760
 761
 762 # This makes all the object files.
 763 .PHONY: objects objs libobjs extra-objs
 764 objects objs: libobjs extra-objs
 765 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 766 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 767
 768 # Canned sequence for building an extra library archive.
 769 define build-extra-lib
 770 $(patsubst %/,cd % &&,$(objpfx)) \
 771 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 772       $(patsubst $(objpfx)%,%,$^)
 773 $(RANLIB) $@
 774 endef
 775 \f
 776 # Installation.
 777
 778 .PHONY: force-install
 779 force-install:
 780
 781 # $(install-lib) are installed from the object directory into $(libdir);
 782 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 783 # unless they also appear in $(non-lib.a).  $(install-data) are installed
 784 # as they are into $(datadir).  $(headers) are installed as they are in
 785 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 786 # are installed from the object directory into $(bindir), $(bindir) and
 787 # $(sbindir), respectively.  $(install-others) are absolute path names of
 788 # files to install; rules to install them are defined elsewhere.
 789
 790 # The simple library name to install libc.a under.
 791 # This could be defined by a sysdep Makefile.
 792 ifndef libc-name
 793 libc-name := c
 794 endif
 795
 796 define do-install
 797 $(make-target-directory)
 798 $(INSTALL_DATA) $< $@
 799 endef
 800
 801 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 802 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 803 define make-target-directory
 804 $(addprefix $(..)./scripts/mkinstalldirs ,\
 805             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 806 endef
 807
 808 # Any directory (parent or subdir) should install libc.a; this way
 809 # "make install" in a subdir is guaranteed to install everything it changes.
 810 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 811                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 812                                                      $(libprefix)$(libc-name)))
 813 install: $(installed-libcs)
 814 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 815         $(make-target-directory)
 816         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 817 # Running ranlib after installing makes the __.SYMDEF time stamp up to
 818 # date, which avoids messages from some linkers.
 819         $(RANLIB) $@
 820
 821 define do-install-program
 822 $(make-target-directory)
 823 $(INSTALL_PROGRAM) $< $@.new
 824 mv -f $@.new $@
 825 endef
 826
 827 define do-install-script
 828 $(make-target-directory)
 829 $(INSTALL_SCRIPT) $< $@.new
 830 mv -f $@.new $@
 831 endef
 832
 833 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
 834 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
 835
 836 ifeq (yes,$(build-shared))
 837 # Find which .so's have versions.
 838 versioned := $(strip $(foreach so,$(install-lib.so),\
 839                                $(patsubst %,$(so),$($(so)-version))))
 840
 841 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
 842 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
 843
 844 install-lib-nosubdir: $(install-lib.so-versioned:%=$(inst_libdir)/%) \
 845                       $(install-lib.so-unversioned:%=$(inst_slibdir)/%)
 846
 847 # Install all the unversioned shared libraries.
 848 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
 849     $(objpfx)%.so $(+force)
 850         $(do-install-program)
 851
 852 ifneq ($(findstring -s,$(LN_S)),)
 853 define make-link
 854 rm -f $@.new
 855 $(SHELL) $(..)scripts/rellns-sh $< $@.new
 856 mv -f $@.new $@
 857 endef
 858 else
 859 # If we have no symbolic links don't bother with rellns-sh.
 860 define make-link
 861 rm -f $@.new
 862 $(LN_S) $< $@.new
 863 mv -f $@.new $@
 864 endef
 865 endif
 866
 867 ifeq (yes,$(build-shared))
 868 ifeq (no,$(cross-compiling))
 869 symbolic-link-prog := $(common-objpfx)elf/sln
 870 symbolic-link-list := $(common-objpfx)elf/symlink.list
 871 define make-shlib-link
 872 echo $(<F) $@ >> $(symbolic-link-list)
 873 endef
 874 else # cross-compiling
 875 # We need a definition that can be used by elf/Makefile's install rules.
 876 symbolic-link-prog = $(LN_S)
 877 endif
 878 endif
 879 ifndef make-shlib-link
 880 define make-shlib-link
 881 rm -f $@
 882 $(LN_S) $(<F) $@
 883 endef
 884 endif
 885
 886 ifdef libc.so-version
 887 # For a library specified to be version N, install three files:
 888 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
 889 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
 890
 891 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
 892                                            $(+force)
 893         $(make-shlib-link)
 894 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
 895         $(do-install-program)
 896 install: $(inst_slibdir)/libc.so$(libc.so-version)
 897
 898 # This fragment of linker script gives the OUTPUT_FORMAT statement
 899 # for the configuration we are building.  We put this statement into
 900 # the linker scripts we install for -lc et al so that they will not be
 901 # used by a link for a different format on a multi-architecture system.
 902 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
 903                             $(common-objpfx)config.make \
 904                             $(common-objpfx)config.h $(..)Makerules
 905         $(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
 906                   -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
 907         | sed -n -f $< > $@.new
 908         rm -f $@.so
 909         mv -f $@.new $@
 910 common-generated += format.lds
 911
 912 ifndef subdir
 913 # What we install as libc.so for programs to link against is in fact a
 914 # link script.  It contains references for the various libraries we need.
 915 # The libc.so object is not complete since some functions are only defined
 916 # in libc_nonshared.a.
 917 # We need to use absolute paths since otherwise local copies (if they exist)
 918 # of the files are taken by the linker.
 919 install: $(inst_libdir)/libc.so
 920 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
 921                         $(common-objpfx)libc.so$(libc.so-version) \
 922                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
 923                                                   $(libprefix)$(libc-name)) \
 924                         $(+force)
 925         (echo '/* GNU ld script';\
 926          echo '   Use the shared library, but some functions are only in';\
 927          echo '   the static library, so try that secondarily.  */';\
 928          cat $<; \
 929          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
 930               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
 931               ')' \
 932         ) > $@.new
 933         mv -f $@.new $@
 934
 935 endif
 936
 937 else
 938 install: $(inst_slibdir)/libc.so
 939 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
 940         $(do-install-program)
 941 endif
 942
 943 ifneq (,$(versioned))
 944 # Produce three sets of rules as above for all the smaller versioned libraries.
 945
 946 define o-iterator-doit
 947 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
 948 endef
 949 object-suffixes-left := $(versioned)
 950 include $(o-iterator)
 951
 952 # Make symlinks in the build directory, because the versioned names might
 953 # be referenced by a DT_NEEDED in another library.
 954 define o-iterator-doit
 955 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
 956 endef
 957 object-suffixes-left := $(versioned)
 958 include $(o-iterator)
 959
 960 generated += $(foreach o,$(versioned),$o$($o-version))
 961
 962 ifeq (,$($(subdir)-version))
 963 define o-iterator-doit
 964 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
 965                                  $(+force);
 966         $$(make-shlib-link)
 967 endef
 968 object-suffixes-left := $(versioned)
 969 include $(o-iterator)
 970
 971 define o-iterator-doit
 972 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
 973         $$(do-install-program)
 974 endef
 975 object-suffixes-left := $(versioned)
 976 include $(o-iterator)
 977 else
 978 define o-iterator-doit
 979 $(inst_slibdir)/$o$($o-version): \
 980   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
 981         $$(make-shlib-link)
 982 endef
 983 object-suffixes-left := $(versioned)
 984 include $(o-iterator)
 985
 986 define o-iterator-doit
 987 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
 988         $$(do-install-program)
 989 endef
 990 object-suffixes-left := $(versioned)
 991 include $(o-iterator)
 992 endif
 993 endif
 994
 995 define do-install-so
 996 $(do-install-program)
 997 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
 998            $(filter-out %.so,$@))
 999 endef
1000
1001 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1002 $(foreach v,$(so-versions),\
1003           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1004                                                $(+force)
1005         $(do-install-so)
1006 $(foreach v,$(so-versions),\
1007           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1008         $(do-install-so)
1009 endif
1010
1011 ifdef install-bin
1012 $(addprefix $(inst_bindir)/,$(install-bin)): \
1013     $(inst_bindir)/%: $(objpfx)% $(+force)
1014         $(do-install-program)
1015 endif
1016 ifdef install-bin-script
1017 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1018     $(inst_bindir)/%: $(objpfx)% $(+force)
1019         $(do-install-script)
1020 endif
1021 ifdef install-rootsbin
1022 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1023    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1024         $(do-install-program)
1025 endif
1026 ifdef install-sbin
1027 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1028     $(inst_sbindir)/%: $(objpfx)% $(+force)
1029         $(do-install-program)
1030 endif
1031 ifdef install-lib
1032 install-lib.a := $(filter lib%.a,$(install-lib))
1033 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1034 ifdef install-lib-non.a
1035 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1036   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1037         $(do-install)
1038 endif
1039 ifdef install-lib.a
1040 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1041   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1042         $(do-install)
1043         $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
1044 endif
1045 endif
1046 ifdef install-data
1047 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1048         $(do-install)
1049 endif
1050 headers := $(strip $(headers))
1051 ifdef headers
1052 $(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
1053         $(do-install)
1054 endif   # headers
1055
1056 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1057         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1058         install-data-nosubdir install-headers-nosubdir
1059 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1060 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1061 install-rootsbin-nosubdir: \
1062         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1063 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1064 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1065                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1066                        $(addprefix $(libprefix),$(install-lib-non.a)))
1067 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1068 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1069 install-others-nosubdir: $(install-others)
1070
1071 # We need all the `-nosubdir' targets so that `install' in the parent
1072 # doesn't depend on several things which each iterate over the subdirs.
1073 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1074 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1075 install-%:: install-%-nosubdir ;
1076
1077 .PHONY: install install-no-libc.a-nosubdir
1078 ifeq ($(build-programs),yes)
1079 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1080                             install-bin-nosubdir install-bin-script-nosubdir \
1081                             install-lib-nosubdir install-others-nosubdir \
1082                             install-rootsbin-nosubdir install-sbin-nosubdir
1083 else
1084 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1085                             install-lib-nosubdir install-others-nosubdir
1086 endif
1087 install: install-no-libc.a-nosubdir
1088 \f
1089 # Command to compile $< in $(objdir) using the native libraries.
1090 define native-compile
1091 $(make-target-directory)
1092 $(patsubst %/,cd % &&,$(objpfx)) \
1093 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1094             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
1095 endef
1096
1097 # Command to compile $< in $(common-objdir) using the native libraries.
1098 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
1099 define common-objdir-compile
1100 $(patsubst %/,cd % &&,$(objpfx)) \
1101 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1102             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
1103 endef
1104
1105 # We always want to use configuration definitions.
1106 # Note that this is only used for commands running in $(objpfx).
1107 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
1108
1109 # Support the GNU standard name for this target.
1110 .PHONY: check
1111 check: tests
1112 # Special target to run tests which cannot be run unconditionally.
1113 # Maintainers should use this target.
1114 .PHONY: xcheck
1115 xcheck: xtests
1116
1117 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1118 ifneq (,$(all-nonlib))
1119 cpp-srcs-left = $(all-nonlib:=.c)
1120 lib := nonlib
1121 include $(patsubst %,$(..)cppflags-iterator.mk,$(all-nonlib))
1122 endif
1123
1124 # The include magic above causes those files to use this variable for flags.
1125 CPPFLAGS-nonlib = -DNOT_IN_libc=1
1126
1127
1128 ifeq ($(versioning),yes)
1129 # Generate normalized lists of symbols, versions, and data sizes.
1130 # This is handy for checking against existing library binaries.
1131
1132 %.symlist: $(..)scripts/abilist.awk %.dynsym
1133         LC_ALL=C $(AWK) -f $^ > $@T
1134         mv -f $@T $@
1135
1136 %.dynsym: %.so
1137         $(OBJDUMP) --dynamic-syms $< > $@T
1138         mv -f $@T $@
1139
1140 vpath %.symlist $(objpfx) $(common-objpfx)
1141 vpath %.dynsym $(objpfx) $(common-objpfx)
1142 vpath %.so $(objpfx) $(common-objpfx)
1143 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1144              %.abilist %.symlist
1145         LC_ALL=C \
1146         $(AWK) -f $< \
1147                -v 'config=$(config-machine)-$(config-vendor)-$(config-os)' \
1148                $(filter %.abilist,$^) \
1149         | diff -pu0 - $(filter %.symlist,$^)
1150
1151 update-abi-%: $(..)scripts/merge-abilist.awk %.abilist %.symlist
1152 ifndef update-abi-config
1153         @echo 'Run $(MAKE) $@ update-abi-config=REGEXP'; exit 2
1154 else
1155         LC_ALL=C $(AWK) -v config=$(update-abi-config) -f $^ > $*.abilist.new
1156         mv -f $*.abilist.new $*.abilist
1157         @echo '*** Now check $*.abilist changes for correctness ***'
1158 endif
1159
1160 .PHONY: update-abi check-abi
1161 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1162 check-abi: $(patsubst %.so,check-abi-%,$(install-lib.so-versioned))
1163 ifdef subdir
1164 subdir_check-abi: check-abi
1165 subdir_update-abi: update-abi
1166 else
1167 check-abi: subdir_check-abi
1168 update-abi: subdir_update-abi
1169 endif
1170
1171 # Enable this well all the .abilist files are in place.
1172 #tests: check-abi
1173 generated += $(install-lib.so-versioned:.so=.symlist)
1174
1175 ifeq ($(subdir),elf)
1176 check-abi: check-abi-libc
1177 update-abi: update-abi-libc
1178 common-generated += libc.symlist
1179 endif
1180
1181 endif
1182
1183 # Generating headers for assembly constants.
1184 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk %.sym
1185         $(AWK) -f $< $(filter %.sym,$^) \
1186         | $(CC) -S -o - $(CFLAGS) $(CPPFLAGS) -x c - \
1187                 -MD -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)' \
1188         | 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
1189         sed $(sed-remove-objpfx) \
1190             -e 's@  *\([^       \/$$][^         \]*\)@ $$(..)\1@g' \
1191             -e 's@  *\.\.\/\([^         \]*\)@ $$(..)\1@g' \
1192             $(@:.h=.h.d)T > $(@:.h=.h.d)T2
1193         rm -f $(@:.h=.h.d)T
1194         mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
1195         mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
1196 vpath %.sym $(sysdirs)
1197
1198 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
1199 \f
1200 .PHONY: TAGS
1201 TAGS: $(objpfx)distinfo $(..)MakeTAGS
1202         $(MAKE) $(addprefix -f ,$^) $@
1203
1204 $(..)po/%.pot: $(objpfx)distinfo $(..)MakeTAGS FORCE
1205         $(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
1206 FORCE:
1207
1208
1209 .PHONY: echo-headers
1210 echo-headers:
1211         @echo $(headers)
1212
1213 \f
1214 # Common cleaning targets.
1215
1216 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1217 clean: common-clean
1218 mostlyclean: common-mostlyclean
1219
1220 do-tests-clean:
1221         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1222                                                       $(test-srcs)) \
1223                                      $(addsuffix -bp.out,$(tests) $(xtests) \
1224                                                          $(test-srcs)))
1225
1226 # Remove the object files.
1227 common-mostlyclean:
1228         -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1229                                      $(others) $(sysdep-others) stubs \
1230                                      $(addsuffix .o,$(tests) $(xtests) \
1231                                                     $(test-srcs) $(others) \
1232                                                     $(sysdep-others)) \
1233                                      $(addsuffix -bp,$(tests) $(xtests) \
1234                                                      $(test-srcs)) \
1235                                      $(addsuffix .out,$(tests) $(xtests) \
1236                                                       $(test-srcs)) \
1237                                      $(addsuffix -bp.out,$(tests) $(xtests) \
1238                                                          $(test-srcs)))
1239         -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
1240                                      $(install-lib.so) \
1241                                      $(install-lib.so:%.so=%_pic.a))
1242         -rm -f core
1243         -rm -f $(objpfx)rtld-*.os
1244         $(rmobjs)
1245 define rmobjs
1246 $(foreach o,$(object-suffixes-for-libc),
1247 -rm -f $(objpfx)stamp$o $(o-objects))
1248 endef
1249
1250 # Also remove the dependencies and generated source files.
1251 common-clean: common-mostlyclean
1252         -rm -f $(addprefix $(objpfx),$(generated)) $(+depfiles)
1253         -rm -f $(objpfx)rtld-*.d
1254         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1255         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1256         -rm -f $(objpfx)distinfo
1257 \f
1258 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1259 # for each function which is a stub.  We grovel over all the .d files
1260 # looking for references to <stub-tag.h>.  Then we grovel over each
1261 # referenced source file to see what stub function it defines.
1262
1263 ifdef objpfx
1264 .PHONY: stubs # The parent Makefile calls this target.
1265 stubs: $(objpfx)stubs
1266 endif
1267 s = $(sysdep_dir)/generic
1268 $(objpfx)stubs: $(+depfiles)
1269 # Use /dev/null since `...` might expand to empty.
1270         (s=`cd $s && $(PWD_P)`; \
1271          $(patsubst %/,cd % &&,$(objpfx)) \
1272          sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
1273           `sed -n -e '\@ $s/[^ ]*\.c@{; s@^.* $s/\([^ ]*\.c\).*$$@'"$$s"'/\1@; h; }' \
1274                 -e '/stub-tag\.h/{; g; p; }' \
1275                   $(patsubst $(objpfx)%,%,$^) /dev/null` \
1276              /dev/null) > $@T
1277         mv -f $@T $@
1278 \f
1279 # Make the distribution tar file.
1280
1281 .PHONY: dist
1282 dist: $(objpfx)distinfo $(..)Make-dist
1283         $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
1284
1285 # Avoid depending on source files found in sysdeps dirs,
1286 # because the references affect implicit rule selection.
1287 dist: $(filter-out %.c %.S %.s,$(distribute))
1288
1289 # We used to simply export all these variables, but that frequently made the
1290 # environment get too large.  Instead, we write all the information into
1291 # a generated makefile fragment `distinfo', and then include it with -f in
1292 # the sub-make that makes the distribution (above).
1293 $(objpfx)distinfo: Makefile $(..)Makerules \
1294                    $(wildcard $(foreach dir,$(sysdirs),$(dir)/Makefile))
1295         $(make-target-directory)
1296         $(distinfo-vars)
1297         mv -f $@.new $@
1298 .PHONY: subdir_distinfo
1299 subdir_distinfo: $(objpfx)distinfo
1300
1301 define distinfo-vars
1302 rm -f $@.new
1303 echo > $@.new 'subdir := $(subdir)'
1304 $(foreach var,subdir-dirs sources elided-routines sysdep_routines \
1305               headers sysdep_headers distribute dont_distribute generated \
1306               others tests xtests test-srcs extra-libs versioned \
1307               $(extra-libs:%=%-routines) \
1308               $(addprefix install-,lib lib.so data bin bin-script sbin others),
1309 echo >> $@.new '$(subdir)-$(var) := $($(var))'
1310 echo >> $@.new '$(var) = $$($(subdir)-$(var))')
1311 endef
1312 \f
1313 ifneq (,$(strip $(gpl2lgpl)))
1314 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1315 # Snarf from the master source and frob the copying notice.
1316 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1317         sed -f $^ > $@-tmp
1318 # So I don't edit them by mistake.
1319         chmod a-w $@-tmp
1320         mv -f $@-tmp $@
1321 ifeq ($(with-cvs),yes)
1322         test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@
1323 endif
1324 endif
1325 endif
1326
1327 # Local Variables:
1328 # mode: makefile
1329 # End: