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@@@.*$$/#define \1 \2/p' > $(@:.h.d=.h)T
 138         sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
 139             $(@:.h=.h.d)T > $(@:.h=.h.d)T2
 140         rm -f $(@:.h=.h.d)T
 141         mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
 142         mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
 143 vpath %.sym $(sysdirs)
 144 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 145
 146
 147 # When we have no deps pass doing it, then make sure the subdirectory
 148 # for object files gets created.
 149 ifdef no_deps
 150 ifdef objpfx
 151 before-compile += $(objpfx).
 152 $(objpfx).:
 153         $(make-target-directory)
 154 endif
 155 endif
 156
 157 # Remove existing files from `before-compile'.  Things are added there when
 158 # they must exist for dependency generation to work right, but once they
 159 # exist there is no further need for every single file to depend on them,
 160 # and those gratuitous dependencies result in many gratuitous
 161 # recompilations.
 162 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 163
 164 # Don't let any before-compile file be an intermediate and get removed.
 165 ifdef before-compile
 166 $(before-compile):
 167 endif
 168
 169 # If a makefile needs to do something conditional on something that
 170 # can only be figured out from headers, write a FOO.make.c input
 171 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
 172 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
 173 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(before-compile)
 174         rm -f $@T $@.dT
 175         (echo '# Generated from $*.make.c by Makerules.'; \
 176          SUNPRO_DEPENDENCIES='$@.dT $$(common-objpfx)$*.make' \
 177          $(CC) $(CFLAGS) $(CPPFLAGS) -E $< \
 178          | sed -n '/@@@/{s/@@@[  ]*\(.*\)@@@/\1/;s/[     ]*$$//p;}'; \
 179          echo 'common-generated += $(@F)'; \
 180          sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
 181          rm -f $@.dT) > $@T
 182         mv -f $@T $@
 183
 184 ifdef subdir
 185 sed-remove-dotdot := -e 's@  *\.\.\/\([^        \]*\)@ $$(..)\1@g'
 186 else
 187 sed-remove-dotdot := -e 's@  *\([^      \/$$][^         \]*\)@ $$(..)\1@g'
 188 endif
 189 \f
 190 # Generate an ordered list of implicit rules which find the source files in
 191 # each sysdep directory.  The old method was to use vpath to search all the
 192 # sysdep directories.  However, that had the problem that a .S file in a
 193 # later directory would be chosen over a .c file in an earlier directory,
 194 # which does not preserve the desired sysdeps ordering behavior.
 195
 196 # When making the list of .d files to include, we can't know which ones
 197 # have source in .s files, and thus do not in fact need a .d file.
 198 # So we must define rules to make .d files for .s files.
 199 define make-dummy-dep
 200 $(addprefix ln $(common-objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
 201 endef
 202 $(common-objpfx)dummy.d:
 203         echo '# .s files cannot contain includes, so they need no deps.' > $@
 204
 205 # It matters that this set of rules, for compiling from sources in
 206 # the current directory (the $srcdir/$subdir) come before the
 207 # generated sysdep rules in included from sysd-rules below.  When
 208 # compiling in the source tree, generated sources go into the current
 209 # directory, and those should be chosen before any sources in sysdeps.
 210 define o-iterator-doit
 211 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 212 endef
 213 object-suffixes-left := $(all-object-suffixes)
 214 include $(o-iterator)
 215 $(objpfx)%.d: %.S $(before-compile); $(+make-deps)
 216
 217 define o-iterator-doit
 218 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
 219 endef
 220 object-suffixes-left := $(all-object-suffixes)
 221 include $(o-iterator)
 222 $(objpfx)%.d: %.s $(common-objpfx)dummy.d; $(make-dummy-dep)
 223
 224 define o-iterator-doit
 225 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 226 endef
 227 object-suffixes-left := $(all-object-suffixes)
 228 include $(o-iterator)
 229 $(objpfx)%.d: %.c $(before-compile); $(+make-deps)
 230
 231 # Omit the objpfx rules when building in the source tree, because
 232 # objpfx is empty and so these rules just override the ones above.
 233 ifdef objpfx
 234 # Define first rules to find the source files in $(objpfx).
 235 # Generated source files will end up there.
 236 define o-iterator-doit
 237 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 238 endef
 239 object-suffixes-left := $(all-object-suffixes)
 240 include $(o-iterator)
 241 $(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
 242
 243 define o-iterator-doit
 244 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
 245 endef
 246 object-suffixes-left := $(all-object-suffixes)
 247 include $(o-iterator)
 248 $(objpfx)%.d: $(objpfx)%.s $(common-objpfx)dummy.d; $(make-dummy-dep)
 249
 250 define o-iterator-doit
 251 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 252 endef
 253 object-suffixes-left := $(all-object-suffixes)
 254 include $(o-iterator)
 255 $(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
 256 endif
 257
 258 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
 259 # patterns matching sysdep directories whose assembly source files should
 260 # be suppressed.
 261 ifdef inhibit-sysdep-asm
 262 define open-check-inhibit-asm
 263 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
 264 endef
 265 close-check-inhibit-asm = ;; esac ;
 266 endif
 267
 268 -include $(+sysdir_pfx)sysd-rules
 269 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 270 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 271 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 272 sysd-rules-force = FORCE
 273 FORCE:
 274 endif
 275 $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
 276                           $(wildcard $(foreach dir,$(sysdirs),\
 277                                                $(dir)/Makefile))\
 278                           $(sysd-rules-force)
 279         -@rm -f $@T
 280         (echo 'sysd-rules-sysdirs := $(config-sysdirs)';                      \
 281          for dir in $(config-sysdirs:%='$$(..)%'); do                         \
 282            for o in $(all-object-suffixes); do \
 283              $(open-check-inhibit-asm) \
 284              echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
 285                   \$$(compile-command.S)";                                    \
 286              echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
 287                   \$$(compile-command.s)";                                    \
 288              echo "\$$(objpfx)rtld-%$$o: $$dir/%.S \$$(before-compile); \
 289                   \$$(compile-command.S)";                                    \
 290              echo "\$$(objpfx)rtld-%$$o: $$dir/%.s \$$(before-compile); \
 291                   \$$(compile-command.s)";                                    \
 292              echo "\$$(objpfx)ptw-%$$o: $$dir/%.S \$$(before-compile); \
 293                   \$$(compile-command.S)";                                    \
 294              echo "\$$(objpfx)ptw-%$$o: $$dir/%.s \$$(before-compile); \
 295                   \$$(compile-command.s)";                                    \
 296              $(close-check-inhibit-asm) \
 297              echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
 298                   \$$(compile-command.c)";                                    \
 299              echo "\$$(objpfx)rtld-%$$o: $$dir/%.c \$$(before-compile); \
 300                   \$$(compile-command.c)";                                    \
 301              echo "\$$(objpfx)ptw-%$$o: $$dir/%.c \$$(before-compile); \
 302                   \$$(compile-command.c)";                                    \
 303            done; \
 304            $(open-check-inhibit-asm) \
 305            echo "\$$(objpfx)%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
 306                 \$$(make-dummy-dep)";                          \
 307            echo "\$$(objpfx)rtld-%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
 308                 \$$(make-dummy-dep)";                          \
 309            echo "\$$(objpfx)ptw-%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
 310                 \$$(make-dummy-dep)";                          \
 311            echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
 312                 \$$(+make-deps)";                                             \
 313            echo "\$$(objpfx)rtld-%.d: $$dir/%.S \$$(before-compile); \
 314                 \$$(+make-deps)";                                             \
 315            echo "\$$(objpfx)ptw-%.d: $$dir/%.S \$$(before-compile); \
 316                 \$$(+make-deps)";                                             \
 317            $(close-check-inhibit-asm)   \
 318            echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
 319                 \$$(+make-deps)";                                             \
 320            echo "\$$(objpfx)rtld-%.d: $$dir/%.c \$$(before-compile); \
 321                 \$$(+make-deps)";                                             \
 322            echo "\$$(objpfx)ptw-%.d: $$dir/%.c \$$(before-compile); \
 323                 \$$(+make-deps)";                                             \
 324            echo "\$$(objpfx)m_%.S: $$dir/s_%.S; \$$(+make-include-of-dep)";   \
 325            echo "\$$(objpfx)m_%.c: $$dir/s_%.c; \$$(+make-include-of-dep)";   \
 326          done;                                                                \
 327          echo 'sysd-rules-done = t') > $@T
 328         mv -f $@T $@
 329
 330 ifndef sysd-rules-done
 331 # Don't do deps until this exists, because it provides rules to make the deps.
 332 no_deps=t
 333 endif
 334
 335 # This is used by the m_%.[Sc] pattern rules in sysd-rules.
 336 define +make-include-of-dep
 337 echo '#include <$<>' > $@T
 338 mv -f $@T $@
 339 endef
 340
 341 # Generate version maps, but wait until sysdep-subdirs is known
 342 ifeq ($(sysd-sorted-done),t)
 343 ifeq ($(versioning),yes)
 344 -include $(common-objpfx)sysd-versions
 345 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 346 common-generated += $(version-maps)
 347 postclean-generated += sysd-versions Versions.all abi-versions.h \
 348                        Versions.def.v.i Versions.def.v Versions.v.i Versions.v
 349
 350 ifndef avoid-generated
 351 ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
 352 sysd-versions-force = FORCE
 353 FORCE:
 354 endif
 355 # See %.v/%.v.i implicit rules in Makeconfig.
 356 $(common-objpfx)Versions.def.v.i: $(..)Versions.def \
 357                                   $(wildcard $(add-ons:%=$(..)%/Versions.def))
 358 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 359                               $(common-objpfx)soversions.i \
 360                               $(common-objpfx)Versions.def.v
 361         { while read lib version setname; do \
 362             test -z "$$setname" || echo "$$lib : $$setname"; \
 363           done < $(word 2,$^); \
 364           cat $(word 3,$^); \
 365         } | LC_ALL=C $(AWK) -f $< > $@T
 366         mv -f $@T $@
 367 # See %.v/%.v.i implicit rules in Makeconfig.
 368 $(common-objpfx)Versions.v.i: $(wildcard $(all-subdirs:%=$(..)%/Versions)) \
 369                               $(wildcard $(sysdirs:%=%/Versions)) \
 370                               $(common-objpfx)abi-versions.h \
 371                               $(sysd-versions-force)
 372 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
 373                                $(common-objpfx)Versions.v \
 374                                $(..)scripts/versions.awk
 375         ( echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
 376           cat $(word 2,$^) \
 377           | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 378                             -v move_if_change='$(move-if-change)' \
 379                             -f $(word 3,$^); \
 380         ) > $@T
 381         mv -f $@T $@
 382 endif # avoid-generated
 383 endif # $(versioning) = yes
 384 endif # sysd-sorted-done
 385
 386
 387 ifndef compile-command.S
 388 compile-command.S = $(compile.S) $(OUTPUT_OPTION)
 389 endif
 390 ifndef compile-command.s
 391 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
 392 endif
 393 ifndef compile-command.c
 394 compile-command.c = $(compile.c) $(OUTPUT_OPTION)
 395 endif
 396
 397 # GCC can grok options after the file name, and it looks nicer that way.
 398 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 399 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 400 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 401 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
 402
 403 # If we want to generate MD5 checksums for the sources do this now.
 404 ifeq ($(md5),yes)
 405 generate-md5 = ; rm -f $(@:.d=.md5); \
 406 $(CC) -E $< $(CFLAGS) $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | \
 407 sed '/^\#/d;/^[[:space:]]*$$/d' | md5sum > $(@:.d=.md5)
 408 else
 409 generate-md5 =
 410 endif
 411
 412 # We need this for the output to go in the right place.  It will default to
 413 # empty if make was configured to work with a cc that can't grok -c and -o
 414 # together.  You can't compile the C library with such a compiler.
 415 OUTPUT_OPTION = -o $@
 416
 417 # We need the $(CFLAGS) to be in there to have the right predefines during
 418 # the dependency run for C sources.  But having it for assembly sources can
 419 # get the wrong predefines.
 420 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
 421 define +make-deps
 422 $(make-target-directory)
 423 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
 424              $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed \
 425 -e 's,$(subst .,\.,$*)\.o,$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 426 $(sed-remove-objpfx) > $(@:.d=.T)
 427 mv -f $(@:.d=.T) $@ $(generate-md5)
 428 endef
 429 ifneq (,$(objpfx))
 430 # Continuation lines here are dangerous because they introduce spaces!
 431 define sed-remove-objpfx
 432 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 433 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 434 endef
 435 endif
 436 \f
 437 # Modify the list of routines we build for different targets
 438
 439 ifeq (yesyes,$(build-shared)$(elf))
 440 ifndef libc.so-version
 441 # Undefine this because it can't work when we libc.so is unversioned.
 442 static-only-routines =
 443 endif
 444 endif
 445
 446 # Bounded pointer thunks are only built for *.ob
 447 elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
 448
 449 elide-routines.oS += $(filter-out $(static-only-routines),\
 450                                   $(routines) $(aux) $(sysdep_routines)) \
 451                      $(elide-bp-thunks)
 452 elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
 453
 454 # If we have versioned code we don't need the old versions in any of the
 455 # static libraries.
 456 elide-routines.o  += $(shared-only-routines) $(elide-bp-thunks)
 457 elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
 458 elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
 459 elide-routines.ob += $(shared-only-routines)
 460 \f
 461 # Shared library building.
 462
 463 ifeq (yes,$(build-shared))
 464
 465 # Reference map file only when versioning is selected and a map file name
 466 # is given.
 467 ifeq ($(versioning),yes)
 468 map-file = $(firstword $($(@F:.so=-map)) \
 469                        $(addprefix $(common-objpfx), \
 470                                    $(filter $(@F:.so=.map),$(version-maps))))
 471 load-map-file = $(map-file:%=-Wl,--version-script=%)
 472 endif
 473
 474 # Pattern rule to build a shared object from an archive of PIC objects.
 475 # This must come after the installation rules so Make doesn't try to
 476 # build shared libraries in place from the installed *_pic.a files.
 477 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 478 # on other shared objects.
 479 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
 480 ifneq (,$(findstring aix,$(config-os)))
 481         (echo '#!'; \
 482          dump -g $< | sed '1,6d' | cut -f2 | sort | uniq) > $(<:a=exp)
 483 endif
 484         $(build-shlib)
 485
 486 ifeq ($(elf),yes)
 487 define build-shlib-helper
 488 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
 489           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(config-LDFLAGS) \
 490           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 491           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 492           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 493           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 494           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 495 endef
 496 else
 497 ifneq (,$(findstring aix,$(config-os)))
 498 define build-shlib-helper
 499 $(LINK.o) -Wl,-G,-bM:SRE,-bnoentry,-bE:$(<:a=exp) \
 500           $(sysdep-LDFLAGS) $(config-LDFLAGS) $(extra-B-$(@F:lib%.so=%).so) \
 501           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 502           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 503           -L$(subst :, -L,$(rpath-link))
 504 endef
 505 else
 506 endif
 507 endif
 508
 509 ifeq (yes,$(elf))
 510 # binutils only position loadable notes into the first page for binaries,
 511 # not for shared objects
 512 define build-shlib
 513 $(build-shlib-helper) \
 514           -o $@.new $(csu-objpfx)abi-note.o -Wl,--verbose \
 515           $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
 516           sed -e '/^=========/,/^=========/!d;/^=========/d' \
 517               -e 's/^.*\.hash[  ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 518               $(LDSEDCMD-$(@F:lib%.so=%).so) > $@.lds
 519 rm -f $@.new
 520 $(build-shlib-helper) -o $@ -T $@.lds \
 521           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 522 rm -f $@.lds
 523 endef
 524 else
 525 ifneq (,$(findstring aix,$(config-os)))
 526 define build-shlib
 527 $(build-shlib-helper) \
 528         -o $@ \
 529         $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 530         $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
 531 endef
 532 define build-shlib
 533 $(build-shlib-helper) \
 534           $(build-shlib-objlist)
 535 endef
 536 endif
 537 endif
 538
 539 ifneq (,$(findstring aix,$(config-os)))
 540 define build-module-helper
 541 $(LINK.o) -Wl,-G -Wl,-bM:SRE -Wl,-bnoentry -Wl,-bexpall \
 542           $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 543           $(load-map-file) \
 544           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 545           -L$(subst :, -L,$(rpath-link)) -Wl,-L=$(rpath-link)
 546 endef
 547 else
 548 define build-module-helper
 549 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(config-LDFLAGS) \
 550           -B$(csu-objpfx) $(load-map-file) \
 551           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 552           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 553 endef
 554 endif
 555
 556 # This macro is similar to build-shlib but it does not define a soname
 557 # and it does not depend on the destination name to start with `lib'.
 558 ifeq (yes,$(elf))
 559 # binutils only position loadable notes into the first page for binaries,
 560 # not for shared objects
 561 define build-module
 562 $(build-module-helper) \
 563           -o $@.new $(csu-objpfx)abi-note.o -Wl,--verbose \
 564           $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
 565           sed -e '/^=========/,/^=========/!d;/^=========/d' \
 566               -e 's/^.*\.hash[  ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 567           > $@.lds
 568 rm -f $@.new
 569 $(build-module-helper) -o $@ -T $@.lds \
 570           $(csu-objpfx)abi-note.o $(build-module-objlist)
 571 rm -f $@.lds
 572 endef
 573 else
 574 ifneq (,$(findstring aix,$(config-os)))
 575 define build-module
 576 $(build-module-helper) \
 577           -o $@ \
 578           $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 579           $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
 580 endef
 581 else
 582 define build-module
 583 define build-module
 584 $(build-module-helper) \
 585           -o $@ \
 586           $(build-module-objlist)
 587 endef
 588 endif
 589 endif
 590
 591 build-module-helper-objlist = \
 592         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 593                    $(filter-out $(map-file) $(+preinit) $(+postinit),$^))
 594 whole-archive := -Wl,--whole-archive
 595
 596 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 597 build-shlib-objlist = $(build-module-helper-objlist) \
 598                       $(LDLIBS-$(@F:lib%.so=%).so)
 599
 600 # Don't try to use -lc when making libc.so itself.
 601 # Also omits crti.o and crtn.o, which we do not want
 602 # since we define our own `.init' section specially.
 603 LDFLAGS-c.so = -nostdlib -nostartfiles
 604 # But we still want to link libc.so against $(gnulib).
 605 LDLIBS-c.so += $(gnulib)
 606 # Give libc.so an entry point and make it directly runnable itself.
 607 LDFLAGS-c.so += -e __libc_main
 608 # Force the backward compatibility EH functions to be linked.
 609 LDFLAGS-c.so += -u __register_frame
 610 # Pre-link the objects of libc_pic.a so that we can locally resolve
 611 # COMMON symbols before we link against ld.so.  This is because ld.so
 612 # contains some of libc_pic.a already, which will prevent the COMMONs
 613 # from being allocated in libc.so, which introduces evil dependencies
 614 # between libc.so and ld.so, which can make it impossible to upgrade.
 615 ifeq ($(elf),yes)
 616 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 617         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 618         $(LDFLAGS-c_pic.os) -Wl,-d -Wl,--whole-archive $^
 619 LDSEDCMD-c.so = -e 's/^.*\*(\.dynbss).*$$/& __start___libc_freeres_ptrs = .; *(__libc_freeres_ptrs) __stop___libc_freeres_ptrs = .;/'
 620 # Use our own special initializer and finalizer files for libc.so.
 621 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
 622                          $(common-objpfx)libc_pic.os \
 623                          $(elfobjdir)/sofini.os \
 624                          $(elfobjdir)/interp.os $(elfobjdir)/ld.so
 625         $(build-shlib)
 626 ifeq ($(versioning),yes)
 627 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 628 endif
 629 common-generated += libc.so libc_pic.os
 630 ifdef libc.so-version
 631 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 632         $(make-link)
 633 common-generated += libc.so$(libc.so-version)
 634 endif
 635 endif
 636 else
 637 ifneq (,$(findstring aix,$(config-os)))
 638 $(common-objpfx)libc.so: $(common-objpfx)libc_pic.a
 639         @rm -f $@
 640         (echo '#!'; \
 641          dump -g $^ | sed '1,6d' | cut -f2 | sort | uniq) > $(^:a=exp)
 642         sed '/__mulh/d;/__mull/d;/__divss/d;/__divus/d;/__quoss/d;/__quous/d' \
 643             /lib/syscalls.exp > $(common-objpfx)syscalls.exp
 644         $(LINK.o) -G -bM:SRE -bnoentry -bE:$(^:a=exp) \
 645                   -bE:$(common-objpfx)syscalls.exp \
 646                   -bI:$(common-objpfx)syscalls.exp \
 647                   -L$(common-objpfx) -o $@ $^
 648 # AIX runtime ld wants libc.so to be libc.a(shr.o) hardwired
 649         cp $@ $(common-objpfx)shr.o
 650         $(AR) $(ARFLAGS) $(common-objpfx)libc.a $(common-objpfx)shr.o
 651 endif
 652 endif
 653 \f
 654 # Figure out the source filenames in this directory.
 655
 656 override sources := $(addsuffix .c,\
 657                         $(filter-out $(elided-routines),\
 658                             $(routines) $(aux) \
 659                             $(sysdep_routines)))
 660 sysdep_routines := $(sysdep_routines)
 661
 662 headers := $(headers) $(sysdep_headers)
 663
 664 # This is the list of all object files, gotten by
 665 # replacing every ".c" in `sources' with a ".o".
 666 # We also add bounded-pointer thunks, which are later
 667 # elided for all suffixes except for `.ob'.
 668 override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
 669                       $(patsubst %,$(bppfx)%.o,\
 670                         $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
 671
 672
 673 # The makefile may define $(extra-libs) with `libfoo libbar'
 674 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 675 ifdef extra-libs
 676 # extra-lib.mk is included once for each extra lib to define rules
 677 # to build it, and to add its objects to the various variables.
 678 # During its evaluation, $(lib) is set to the name of the library.
 679 extra-libs-left := $(extra-libs)
 680 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 681 endif
 682 \f
 683 +depfiles := $(sources:.c=.d) \
 684              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 685              $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
 686 ifeq ($(build-programs),yes)
 687 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 688 endif
 689 +depfiles := $(addprefix $(objpfx),\
 690                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 691                                       $(+depfiles)))
 692
 693 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
 694 # They will be generated when they're needed, and trying too early won't work.
 695 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 696 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
 697                                                 $(+gen-as-const)))
 698
 699 ifdef +depfiles
 700 ifneq ($(no_deps),t)
 701 -include $(+depfiles)
 702 endif
 703 endif
 704 \f\f
 705 # Maximize efficiency by minimizing the number of rules.
 706 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 707 # Don't define any builtin rules.
 708 MAKEFLAGS := $(MAKEFLAGS)r
 709
 710 # Generic rule for making directories.
 711 %/:
 712 # mkdir isn't smart enough to strip a trailing /.
 713         mkdir $(@:%/=%)
 714 \f
 715 # Make sure that object files are not removed
 716 # when they are intermediates between sources and library members.
 717 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 718
 719 # Make sure that the parent library archive is never removed.
 720 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 721 \f
 722 # Use the verbose option of ar and tar when not running silently.
 723 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 724 verbose := v
 725 else                                            # -s
 726 verbose :=
 727 endif                                           # not -s
 728
 729 ARFLAGS := r$(verbose)
 730 CREATE_ARFLAGS := cru$(verbose)
 731 \f
 732 # This makes all the object files in the parent library archive.
 733
 734 .PHONY: lib lib-noranlib
 735 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 736 lib-noranlib: libobjs
 737
 738 # For object-suffix $o, the list of objects with that suffix.
 739 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 740 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 741                                                        $(elide-routines$o)),\
 742                                             $(objects))) \
 743             $(addprefix $(objpfx),$(o-objects$o))
 744
 745 others: $(addprefix $(objpfx),$(install-lib))
 746
 747 ifndef objects
 748
 749 # Create the stamp$o files to keep the parent makefile happy.
 750 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 751 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 752         $(make-target-directory)
 753         rm -f $@; > $@
 754 else
 755
 756 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 757 # timestamp file; these rules (one explicit rule is generated for each
 758 # object suffix) write a list of objects to update in the stamp file.
 759 # The parent will then actually add them all to the archive in the
 760 # archive rule, below.
 761 define o-iterator-doit
 762 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 763 endef
 764 define do-stamp
 765 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 766 mv -f $@T $@
 767 endef
 768 object-suffixes-left := $(object-suffixes-for-libc)
 769 include $(o-iterator)
 770
 771 endif
 772
 773 # Now define explicit rules to build the library archives; these depend
 774 # on the stamp files built above.
 775 define o-iterator-doit
 776 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 777                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 778 endef
 779 define do-makelib
 780 cd $(common-objdir) && \
 781 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 782 $(RANLIB) $@
 783 endef
 784 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 785 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 786 ifndef subdir
 787 $(subdirs-stamps): subdir_lib;
 788 endif
 789 object-suffixes-left = $(object-suffixes-for-libc)
 790 include $(o-iterator)
 791
 792
 793 # This makes all the object files.
 794 .PHONY: objects objs libobjs extra-objs
 795 objects objs: libobjs extra-objs
 796 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 797 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 798
 799 # Canned sequence for building an extra library archive.
 800 define build-extra-lib
 801 $(patsubst %/,cd % &&,$(objpfx)) \
 802 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 803       $(patsubst $(objpfx)%,%,$^)
 804 $(RANLIB) $@
 805 endef
 806 \f
 807 # Installation.
 808
 809 .PHONY: force-install
 810 force-install:
 811
 812 # $(install-lib) are installed from the object directory into $(libdir);
 813 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 814 # unless they also appear in $(non-lib.a).  $(install-data) are installed
 815 # as they are into $(datadir).  $(headers) are installed as they are in
 816 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 817 # are installed from the object directory into $(bindir), $(bindir) and
 818 # $(sbindir), respectively.  $(install-others) are absolute path names of
 819 # files to install; rules to install them are defined elsewhere.
 820
 821 # The simple library name to install libc.a under.
 822 # This could be defined by a sysdep Makefile.
 823 ifndef libc-name
 824 libc-name := c
 825 endif
 826
 827 define do-install
 828 $(make-target-directory)
 829 $(INSTALL_DATA) $< $@
 830 endef
 831
 832 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 833 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 834 define make-target-directory
 835 $(addprefix $(..)./scripts/mkinstalldirs ,\
 836             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 837 endef
 838
 839 # Any directory (parent or subdir) should install libc.a; this way
 840 # "make install" in a subdir is guaranteed to install everything it changes.
 841 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 842                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 843                                                      $(libprefix)$(libc-name)))
 844 install: $(installed-libcs)
 845 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 846         $(make-target-directory)
 847         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 848 # Running ranlib after installing makes the __.SYMDEF time stamp up to
 849 # date, which avoids messages from some linkers.
 850         $(RANLIB) $@
 851
 852 define do-install-program
 853 $(make-target-directory)
 854 $(INSTALL_PROGRAM) $< $@.new
 855 mv -f $@.new $@
 856 endef
 857
 858 define do-install-script
 859 $(make-target-directory)
 860 $(INSTALL_SCRIPT) $< $@.new
 861 mv -f $@.new $@
 862 endef
 863
 864 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
 865 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
 866
 867 ifeq (yes,$(build-shared))
 868 # Find which .so's have versions.
 869 versioned := $(strip $(foreach so,$(install-lib.so),\
 870                                $(patsubst %,$(so),$($(so)-version))))
 871
 872 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
 873 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
 874
 875 # For versioned libraries, we install three files:
 876 #       $(inst_libdir)/libfoo.so        -- for linking, symlink or ld script
 877 #       $(inst_slibdir)/libfoo.so.NN    -- for loading by SONAME, symlink
 878 #       $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
 879 V := $(firstword $($(subdir)-version) $(version))
 880 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
 881                       $(foreach L,$(install-lib.so-versioned),\
 882                                 $(inst_libdir)/$L \
 883                                 $(inst_slibdir)/$(L:.so=)-$V.so \
 884                                 $(inst_slibdir)/$L$($L-version))
 885
 886 # Install all the unversioned shared libraries.
 887 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
 888     $(objpfx)%.so $(+force)
 889         $(do-install-program)
 890
 891 ifneq ($(findstring -s,$(LN_S)),)
 892 define make-link
 893 rm -f $@.new
 894 $(SHELL) $(..)scripts/rellns-sh $< $@.new
 895 mv -f $@.new $@
 896 endef
 897 else
 898 # If we have no symbolic links don't bother with rellns-sh.
 899 define make-link
 900 rm -f $@.new
 901 $(LN_S) $< $@.new
 902 mv -f $@.new $@
 903 endef
 904 endif
 905
 906 ifeq (yes,$(build-shared))
 907 ifeq (no,$(cross-compiling))
 908 symbolic-link-prog := $(common-objpfx)elf/sln
 909 symbolic-link-list := $(common-objpfx)elf/symlink.list
 910 define make-shlib-link
 911 echo $(<F) $@ >> $(symbolic-link-list)
 912 endef
 913 else # cross-compiling
 914 # We need a definition that can be used by elf/Makefile's install rules.
 915 symbolic-link-prog = $(LN_S)
 916 endif
 917 endif
 918 ifndef make-shlib-link
 919 define make-shlib-link
 920 rm -f $@
 921 $(LN_S) $(<F) $@
 922 endef
 923 endif
 924
 925 ifdef libc.so-version
 926 # For a library specified to be version N, install three files:
 927 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
 928 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
 929
 930 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
 931                                            $(+force)
 932         $(make-shlib-link)
 933 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
 934         $(do-install-program)
 935 install: $(inst_slibdir)/libc.so$(libc.so-version)
 936
 937 # This fragment of linker script gives the OUTPUT_FORMAT statement
 938 # for the configuration we are building.  We put this statement into
 939 # the linker scripts we install for -lc et al so that they will not be
 940 # used by a link for a different format on a multi-architecture system.
 941 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
 942                             $(common-objpfx)config.make \
 943                             $(common-objpfx)config.h $(..)Makerules
 944         $(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
 945                   -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
 946         | sed -n -f $< > $@.new
 947         rm -f $@.so
 948         mv -f $@.new $@
 949 common-generated += format.lds
 950
 951 ifndef subdir
 952 # What we install as libc.so for programs to link against is in fact a
 953 # link script.  It contains references for the various libraries we need.
 954 # The libc.so object is not complete since some functions are only defined
 955 # in libc_nonshared.a.
 956 # We need to use absolute paths since otherwise local copies (if they exist)
 957 # of the files are taken by the linker.
 958 install: $(inst_libdir)/libc.so
 959 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
 960                         $(common-objpfx)libc.so$(libc.so-version) \
 961                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
 962                                                   $(libprefix)$(libc-name)) \
 963                         $(+force)
 964         (echo '/* GNU ld script';\
 965          echo '   Use the shared library, but some functions are only in';\
 966          echo '   the static library, so try that secondarily.  */';\
 967          cat $<; \
 968          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
 969               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
 970               ')' \
 971         ) > $@.new
 972         mv -f $@.new $@
 973
 974 endif
 975
 976 else
 977 install: $(inst_slibdir)/libc.so
 978 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
 979         $(do-install-program)
 980 endif
 981
 982 ifneq (,$(versioned))
 983 # Produce three sets of rules as above for all the smaller versioned libraries.
 984
 985 define o-iterator-doit
 986 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
 987 endef
 988 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
 989 ifneq (,$(object-suffixes-left))
 990 include $(o-iterator)
 991 endif
 992
 993 # Make symlinks in the build directory, because the versioned names might
 994 # be referenced by a DT_NEEDED in another library.
 995 define o-iterator-doit
 996 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
 997 endef
 998 object-suffixes-left := $(versioned)
 999 include $(o-iterator)
1000
1001 generated += $(foreach o,$(versioned),$o$($o-version))
1002
1003 ifeq (,$($(subdir)-version))
1004 define o-iterator-doit
1005 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1006                                  $(+force);
1007         $$(make-shlib-link)
1008 endef
1009 object-suffixes-left := $(versioned)
1010 include $(o-iterator)
1011
1012 define o-iterator-doit
1013 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1014         $$(do-install-program)
1015 endef
1016 object-suffixes-left := $(versioned)
1017 include $(o-iterator)
1018 else
1019 define o-iterator-doit
1020 $(inst_slibdir)/$o$($o-version): \
1021   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1022         $$(make-shlib-link)
1023 endef
1024 object-suffixes-left := $(versioned)
1025 include $(o-iterator)
1026
1027 define o-iterator-doit
1028 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1029         $$(do-install-program)
1030 endef
1031 object-suffixes-left := $(versioned)
1032 include $(o-iterator)
1033 endif
1034 endif
1035
1036 define do-install-so
1037 $(do-install-program)
1038 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1039            $(filter-out %.so,$@))
1040 endef
1041
1042 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1043 $(foreach v,$(so-versions),\
1044           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1045                                                $(+force)
1046         $(do-install-so)
1047 $(foreach v,$(so-versions),\
1048           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1049         $(do-install-so)
1050 endif
1051
1052 ifdef install-bin
1053 $(addprefix $(inst_bindir)/,$(install-bin)): \
1054     $(inst_bindir)/%: $(objpfx)% $(+force)
1055         $(do-install-program)
1056 endif
1057 ifdef install-bin-script
1058 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1059     $(inst_bindir)/%: $(objpfx)% $(+force)
1060         $(do-install-script)
1061 endif
1062 ifdef install-rootsbin
1063 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1064    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1065         $(do-install-program)
1066 endif
1067 ifdef install-sbin
1068 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1069     $(inst_sbindir)/%: $(objpfx)% $(+force)
1070         $(do-install-program)
1071 endif
1072 ifdef install-lib
1073 install-lib.a := $(filter lib%.a,$(install-lib))
1074 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1075 ifdef install-lib-non.a
1076 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1077   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1078         $(do-install)
1079 endif
1080 ifdef install-lib.a
1081 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1082   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1083         $(do-install)
1084         $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
1085 endif
1086 endif
1087 ifdef install-data
1088 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1089         $(do-install)
1090 endif
1091 headers := $(strip $(headers))
1092 ifdef headers
1093 $(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
1094         $(do-install)
1095 endif   # headers
1096
1097 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1098         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1099         install-data-nosubdir install-headers-nosubdir
1100 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1101 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1102 install-rootsbin-nosubdir: \
1103         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1104 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1105 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1106                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1107                        $(addprefix $(libprefix),$(install-lib-non.a)))
1108 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1109 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1110 install-others-nosubdir: $(install-others)
1111
1112 # We need all the `-nosubdir' targets so that `install' in the parent
1113 # doesn't depend on several things which each iterate over the subdirs.
1114 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1115 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1116 install-%:: install-%-nosubdir ;
1117
1118 .PHONY: install install-no-libc.a-nosubdir
1119 ifeq ($(build-programs),yes)
1120 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1121                             install-bin-nosubdir install-bin-script-nosubdir \
1122                             install-lib-nosubdir install-others-nosubdir \
1123                             install-rootsbin-nosubdir install-sbin-nosubdir
1124 else
1125 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
1126                             install-lib-nosubdir install-others-nosubdir
1127 endif
1128 install: install-no-libc.a-nosubdir
1129 \f
1130 # Command to compile $< in $(objdir) using the native libraries.
1131 define native-compile
1132 $(make-target-directory)
1133 $(patsubst %/,cd % &&,$(objpfx)) \
1134 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1135             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
1136 endef
1137
1138 # Command to compile $< in $(common-objdir) using the native libraries.
1139 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
1140 define common-objdir-compile
1141 $(patsubst %/,cd % &&,$(objpfx)) \
1142 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1143             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
1144 endef
1145
1146 # We always want to use configuration definitions.
1147 # Note that this is only used for commands running in $(objpfx).
1148 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
1149
1150 # Support the GNU standard name for this target.
1151 .PHONY: check
1152 check: tests
1153 # Special target to run tests which cannot be run unconditionally.
1154 # Maintainers should use this target.
1155 .PHONY: xcheck
1156 xcheck: xtests
1157
1158 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1159 ifneq (,$(all-nonlib))
1160 cpp-srcs-left = $(all-nonlib:=.c)
1161 lib := nonlib
1162 include $(patsubst %,$(..)cppflags-iterator.mk,$(all-nonlib))
1163 endif
1164
1165 # The include magic above causes those files to use this variable for flags.
1166 CPPFLAGS-nonlib = -DNOT_IN_libc=1
1167
1168
1169 ifeq ($(versioning),yes)
1170 # Generate normalized lists of symbols, versions, and data sizes.
1171 # This is handy for checking against existing library binaries.
1172
1173 %.symlist: $(..)scripts/abilist.awk %.dynsym
1174         LC_ALL=C $(AWK) -f $^ > $@T
1175         mv -f $@T $@
1176
1177 %.dynsym: %.so
1178         $(OBJDUMP) --dynamic-syms $< > $@T
1179         mv -f $@T $@
1180
1181 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1182              $(..)abilist/%.abilist $(objpfx)%.symlist
1183         $(check-abi)
1184 check-abi-%: $(..)scripts/extract-abilist.awk $(common-objpfx)config.make \
1185              $(..)abilist/%.abilist $(common-objpfx)%.symlist
1186         $(check-abi)
1187 define check-abi
1188         LC_ALL=C \
1189         $(AWK) -f $< -v 'config=$(check-abi-config)' \
1190                $(filter %.abilist,$^) \
1191         | diff -pu0 - $(filter %.symlist,$^)
1192 endef
1193
1194 ifeq ($(firstword $(sysd-sorted-done) f)$(firstword $(generating) f),tf)
1195 -include $(common-objpfx)tls.make
1196 config-tls-yes := tls
1197 config-tls-no := notls
1198 check-abi-config := \
1199   $(config-machine)-$(config-vendor)-$(config-os)/$(config-tls-$(use-thread))
1200 endif
1201
1202 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1203               $(objpfx)%.symlist
1204         $(update-abi)
1205 update-abi-%: $(..)scripts/merge-abilist.awk $(..)abilist/%.abilist \
1206               $(common-objpfx)%.symlist
1207         $(update-abi)
1208 ifndef update-abi-config
1209 define update-abi
1210         @echo 'Run $(MAKE) $@ update-abi-config=REGEXP'; exit 2
1211 endef
1212 else
1213 define update-abi
1214 LC_ALL=C $(AWK) -v config=$(update-abi-config) -f $^ \
1215          > $(..)abilist/$*.abilist.new
1216 @if cmp -s $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist 2> /dev/null; \
1217  then rm -f $(..)abilist/$*.abilist.new; \
1218       echo '+++ $(..)abilist/$*.abilist is unchanged'; \
1219  else mv -f $(..)abilist/$*.abilist.new $(..)abilist/$*.abilist; \
1220       echo '*** Now check $*.abilist changes for correctness ***'; \
1221  fi
1222 endef
1223 endif
1224
1225 .PHONY: update-abi check-abi
1226 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1227 check-abi: $(patsubst %.so,check-abi-%,$(install-lib.so-versioned))
1228 ifdef subdir
1229 subdir_check-abi: check-abi
1230 subdir_update-abi: update-abi
1231 else
1232 check-abi: subdir_check-abi
1233 update-abi: subdir_update-abi
1234 endif
1235
1236 # Enable this when all the .abilist files are in place.
1237 #tests: check-abi
1238
1239 ifeq ($(subdir),elf)
1240 check-abi: check-abi-libc
1241 update-abi: update-abi-libc
1242 common-generated += libc.symlist
1243 endif
1244
1245 endif
1246
1247 # There's no good place to put this - here will do.
1248 # The dependencies are wrong if it's run from the top level.
1249 ifeq ($(filter %posix, $(sysdirs)),)
1250 L_tmpnam  = 1
1251 TMP_MAX   = 0
1252 L_ctermid = 1
1253 L_cuserid = 1
1254 else
1255 L_tmpnam  = 20
1256 TMP_MAX   = 238328
1257 L_ctermid = 9
1258 L_cuserid = 9
1259 endif
1260 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1261
1262 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1263 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1264                    $(common-objpfx)config.make
1265         $(make-target-directory)
1266         echo '#include "$(..)posix/bits/posix1_lim.h"' |                \
1267         SUNPRO_DEPENDENCIES='$(@:st=dT) $@'                             \
1268         $(CC) $(+includes) -E -dM -xc - -o $(@:st=hT)
1269         echo '#include "$(..)misc/sys/uio.h"' |                         \
1270         SUNPRO_DEPENDENCIES='$(@:st=dT) $@'                             \
1271         $(CC) -D_LIBC=1 $(+includes) -E -dM -xc - | cat - >> $(@:st=hT)
1272 ifdef sed-remove-objpfx
1273         sed $(sed-remove-objpfx) $(@:st=dT) > $(@:st=dt)
1274         cat $(@:st=dt) >> $(@:st=d)
1275 else
1276         cat $(@:st=dT) >> $(@:st=d)
1277 endif
1278         fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`;       \
1279         filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`;    \
1280         iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`;        \
1281         fopen_max=$${fopen_max:-16};                                    \
1282         filename_max=$${filename_max:-1024};                            \
1283         if [ -z $$iov_max ]; then                                       \
1284           define_iov_max="# undef IOV_MAX";                             \
1285         else                                                            \
1286           define_iov_max="# define IOV_MAX $$iov_max";                  \
1287         fi;                                                             \
1288         sed -e "s/@FOPEN_MAX@/$$fopen_max/"                             \
1289             -e "s/@FILENAME_MAX@/$$filename_max/"                       \
1290             -e "s/@L_tmpnam@/$(L_tmpnam)/"                              \
1291             -e "s/@TMP_MAX@/$(TMP_MAX)/"                                \
1292             -e "s/@L_ctermid@/$(L_ctermid)/"                            \
1293             -e "s/@L_cuserid@/$(L_cuserid)/"                            \
1294             -e "s/@define_IOV_MAX@/$$define_iov_max/"                   \
1295             $< > $(@:st=h.new)
1296         $(move-if-change) $(@:st=h.new) $(@:st=h)
1297 # Remove these last so that they can be examined if something went wrong.
1298         rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1299         touch $@
1300 # Get dependencies.
1301 ifndef no_deps
1302 -include $(stdio_lim:h=d)
1303 endif
1304 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1305 \f
1306 .PHONY: TAGS
1307 TAGS: $(objpfx)distinfo $(..)MakeTAGS
1308         $(MAKE) $(addprefix -f ,$^) $@
1309
1310 $(..)po/%.pot: $(objpfx)distinfo $(..)MakeTAGS FORCE
1311         $(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
1312 FORCE:
1313
1314
1315 .PHONY: echo-headers
1316 echo-headers:
1317         @echo $(headers)
1318
1319 \f
1320 # Common cleaning targets.
1321
1322 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1323 clean: common-clean
1324 mostlyclean: common-mostlyclean
1325
1326 do-tests-clean:
1327         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1328                                                       $(test-srcs)) \
1329                                      $(addsuffix -bp.out,$(tests) $(xtests) \
1330                                                          $(test-srcs)))
1331
1332 # Remove the object files.
1333 common-mostlyclean:
1334         -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1335                                      $(others) $(sysdep-others) stubs \
1336                                      $(addsuffix .o,$(tests) $(xtests) \
1337                                                     $(test-srcs) $(others) \
1338                                                     $(sysdep-others)) \
1339                                      $(addsuffix -bp,$(tests) $(xtests) \
1340                                                      $(test-srcs)) \
1341                                      $(addsuffix .out,$(tests) $(xtests) \
1342                                                       $(test-srcs)) \
1343                                      $(addsuffix -bp.out,$(tests) $(xtests) \
1344                                                          $(test-srcs)))
1345         -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
1346                                      $(install-lib.so) \
1347                                      $(install-lib.so:%.so=%_pic.a))
1348         -rm -f core
1349         -rm -f $(objpfx)rtld-*.os
1350         $(rmobjs)
1351 define rmobjs
1352 $(foreach o,$(object-suffixes-for-libc),
1353 -rm -f $(objpfx)stamp$o $(o-objects))
1354 endef
1355
1356 # Also remove the dependencies and generated source files.
1357 common-clean: common-mostlyclean
1358         -rm -f $(addprefix $(objpfx),$(generated)) $(+depfiles)
1359         -rm -f $(objpfx)rtld-*.d
1360         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1361         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1362         -rm -f $(objpfx)distinfo
1363 \f
1364 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1365 # for each function which is a stub.  We grovel over all the .d files
1366 # looking for references to <stub-tag.h>.  Then we grovel over each
1367 # referenced source file to see what stub function it defines.
1368
1369 ifdef objpfx
1370 .PHONY: stubs # The parent Makefile calls this target.
1371 stubs: $(objpfx)stubs
1372 endif
1373 s = $(sysdep_dir)/generic
1374 $(objpfx)stubs: $(+depfiles)
1375 # Use /dev/null since `...` might expand to empty.
1376         (s=`cd $s && $(PWD_P)`; \
1377          $(patsubst %/,cd % &&,$(objpfx)) \
1378          sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
1379           `sed -n -e '\@ $s/[^ ]*\.c@{; s@^.* $s/\([^ ]*\.c\).*$$@'"$$s"'/\1@; h; }' \
1380                 -e '/stub-tag\.h/{; g; p; }' \
1381                   $(patsubst $(objpfx)%,%,$^) /dev/null` \
1382              /dev/null) > $@T
1383         mv -f $@T $@
1384 \f
1385 # Make the distribution tar file.
1386
1387 .PHONY: dist
1388 dist: $(objpfx)distinfo $(..)Make-dist
1389         $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
1390
1391 # Avoid depending on source files found in sysdeps dirs,
1392 # because the references affect implicit rule selection.
1393 dist: $(filter-out %.c %.S %.s,$(distribute))
1394
1395 # We used to simply export all these variables, but that frequently made the
1396 # environment get too large.  Instead, we write all the information into
1397 # a generated makefile fragment `distinfo', and then include it with -f in
1398 # the sub-make that makes the distribution (above).
1399 $(objpfx)distinfo: Makefile $(..)Makerules \
1400                    $(wildcard $(foreach dir,$(sysdirs),$(dir)/Makefile))
1401         $(make-target-directory)
1402         $(distinfo-vars)
1403         mv -f $@.new $@
1404 .PHONY: subdir_distinfo
1405 subdir_distinfo: $(objpfx)distinfo
1406
1407 define distinfo-vars
1408 rm -f $@.new
1409 echo > $@.new 'subdir := $(subdir)'
1410 $(foreach var,subdir-dirs sources elided-routines sysdep_routines \
1411               headers sysdep_headers distribute dont_distribute generated \
1412               others tests xtests test-srcs extra-libs versioned \
1413               $(extra-libs:%=%-routines) \
1414               $(addprefix install-,lib lib.so data bin bin-script sbin others),
1415 echo >> $@.new '$(subdir)-$(var) := $($(var))'
1416 echo >> $@.new '$(var) = $$($(subdir)-$(var))')
1417 endef
1418 \f
1419 ifneq (,$(strip $(gpl2lgpl)))
1420 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1421 # Snarf from the master source and frob the copying notice.
1422 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1423         sed -f $^ > $@-tmp
1424 # So I don't edit them by mistake.
1425         chmod a-w $@-tmp
1426         mv -f $@-tmp $@
1427 ifeq ($(with-cvs),yes)
1428         test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@
1429 endif
1430 endif
1431 endif
1432
1433 # Local Variables:
1434 # mode: makefile
1435 # End: