Makerules

   1 # Copyright (C) 1991-2017 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, see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 #
  19 #       Common rules for making the GNU C library.  This file is included
  20 #       by the top-level Makefile and by all subdirectory makefiles
  21 #       (through Rules).
  22 #
  23 ifneq (,)
  24 This makefile requires GNU Make.
  25 endif
  26
  27 REQUIRED_MAKE_VERSION = 3.74
  28 REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION))
  29
  30 ifneq ($(REQUIRED_MAKE_VERSION), \
  31        $(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
  32 Wrong GNU Make version.  See above for the version needed.
  33 endif
  34
  35
  36 ifdef   subdir
  37 ..      := ../
  38 endif   # subdir
  39
  40 # If `sources' was defined by the parent makefile, undefine it so
  41 # we will later get it from wildcard search in this directory.
  42 ifneq   "$(findstring env,$(origin sources))" ""
  43 sources :=
  44 endif
  45
  46 oPATH := $(PATH)
  47 PATH := this definition should take precedence over $(oPATH)
  48 ifeq ($(PATH),$(oPATH))
  49 You must not use the -e flag when building the GNU C library.
  50 else
  51 PATH := $(oPATH)
  52 endif
  53 \f
  54 ifndef +included-Makeconfig
  55 include $(..)Makeconfig
  56 endif
  57
  58 # This variable is used in ``include $(o-iterator)'' after defining
  59 # $(o-iterator-doit) to produce some desired rule using $o for the object
  60 # suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
  61 # is produced for each object suffix in use.
  62 o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
  63 \f
  64 # Include any system-specific makefiles.
  65
  66 # This is here so things in sysdep Makefiles can easily depend on foo.h as
  67 # appropriate and not worry about where foo.h comes from, which may be
  68 # system dependent and not known by that Makefile.
  69 vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
  70                                       $(+sysdep_dirs) $(..)))
  71
  72 # The same is true for RPC source files.
  73 vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
  74                                       $(+sysdep_dirs) $(..)))
  75
  76 # Some sysdep makefiles use this to distinguish being included here from
  77 # being included individually by a subdir makefile (hurd/Makefile needs this).
  78 in-Makerules := yes
  79
  80 sysdep-makefiles := $(wildcard $(sysdirs:=/Makefile))
  81 ifneq (,$(sysdep-makefiles))
  82 include $(sysdep-makefiles)
  83 endif
  84
  85
  86 # Reorder before-compile so that mach things come first, and hurd things
  87 # second, before all else.  The mach and hurd subdirectories have many
  88 # generated header files which the much of rest of the library depends on,
  89 # so it is best to build them first (and mach before hurd, at that).
  90 before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
  91                            $(before-compile)) \
  92                   $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
  93                                $(before-compile))
  94
  95 # Even before that, we need abi-versions.h which is generated right here.
  96 ifeq ($(build-shared),yes)
  97 ifndef avoid-generated
  98 before-compile := $(common-objpfx)abi-versions.h $(before-compile)
  99 $(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
 100                                 $(common-objpfx)Versions.all
 101         LC_ALL=C $(AWK) -f $^ > $@T
 102         mv -f $@T $@
 103
 104 $(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
 105         sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
 106             $(common-objpfx)abi-versions.h > $@T
 107         mv -f $@T $@
 108
 109 # first-versions.h and ldbl-compat-choose.h provide macros used in
 110 # various symbol versioning macro calls.
 111 before-compile := $(common-objpfx)first-versions.h \
 112                   $(common-objpfx)ldbl-compat-choose.h $(before-compile)
 113 $(common-objpfx)first-versions.h: $(common-objpfx)versions.stmp
 114 $(common-objpfx)ldbl-compat-choose.h: $(common-objpfx)versions.stmp
 115 endif # avoid-generated
 116 endif # $(build-shared) = yes
 117
 118 ifndef avoid-generated
 119 ifneq (,$(CXX))
 120 # If C++ headers <cstdlib> or <cmath> are used, GCC 6 will include
 121 # /usr/include/stdlib.h or /usr/include/math.h from "#include_next"
 122 # (instead of stdlib/stdlib.h or math/math.h in the glibc source
 123 # directory), and this turns up as a make dependency.  An implicit
 124 # rule will kick in and make will try to install stdlib/stdlib.h or
 125 # math/math.h as /usr/include/stdlib.h or /usr/include/math.h because
 126 # the target is out of date.  We make a copy of <cstdlib> and <cmath>
 127 # in the glibc build directory so that stdlib/stdlib.h and math/math.h
 128 # will be used instead of /usr/include/stdlib.h and /usr/include/math.h.
 129 before-compile := $(common-objpfx)cstdlib $(common-objpfx)cmath \
 130                   $(before-compile)
 131 $(common-objpfx)cstdlib: $(c++-cstdlib-header)
 132         $(INSTALL_DATA) $< $@T
 133         $(move-if-change) $@T $@
 134 $(common-objpfx)cmath: $(c++-cmath-header)
 135         $(INSTALL_DATA) $< $@T
 136         $(move-if-change) $@T $@
 137 ifneq (,$(c++-bits-std_abs-h))
 138 # Also make a copy of <bits/std_abs.h> from GCC 7 to prevent it from
 139 # including /usr/include/stdlib.h.
 140 before-compile := $(common-objpfx)bits/std_abs.h $(before-compile)
 141 $(common-objpfx)bits/std_abs.h: $(c++-bits-std_abs-h)
 142         $(INSTALL_DATA) $< $@T
 143         $(move-if-change) $@T $@
 144 endif
 145 endif
 146
 147 before-compile := $(common-objpfx)libc-abis.h $(before-compile)
 148 $(common-objpfx)libc-abis.h: $(common-objpfx)libc-abis.stamp; @:
 149 $(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \
 150                              $(firstword $(wildcard $(sysdirs:=/libc-abis)) \
 151                                          $(..)libc-abis) \
 152                              $(..)Makerules
 153         $(SHELL) $< \
 154                  $(base-machine)-$(config-vendor)-$(config-os) \
 155                  < $(word 2,$^) > $(@:.stamp=.h)T
 156         $(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h)
 157         touch $@
 158 common-generated += $(common-objpfx)libc-abis.h
 159 endif # avoid-generated
 160
 161 ifeq (yes,$(build-shared))
 162 $(common-objpfx)runtime-linker.h: $(common-objpfx)runtime-linker.stamp; @:
 163 $(common-objpfx)runtime-linker.stamp: $(common-objpfx)config.make
 164         $(make-target-directory)
 165         echo '#define RUNTIME_LINKER "$(rtlddir)/$(rtld-installed-name)"' \
 166                 > ${@:stamp=T}
 167         $(move-if-change) ${@:stamp=T} ${@:stamp=h}
 168         touch $@
 169 endif
 170
 171 # Make sure the subdirectory for object files gets created.
 172 ifdef objpfx
 173 ifeq (,$(wildcard $(objpfx).))
 174 before-compile += $(objpfx).
 175 $(objpfx).:
 176         $(make-target-directory)
 177 endif
 178 endif
 179
 180 # Remove existing files from `before-compile'.  Things are added there when
 181 # they must exist for dependency generation to work right, but once they
 182 # exist there is no further need for every single file to depend on them,
 183 # and those gratuitous dependencies result in many gratuitous
 184 # recompilations.
 185 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 186
 187 # Don't let any before-compile file be an intermediate and get removed.
 188 ifdef before-compile
 189 $(before-compile):
 190 endif
 191
 192 # We don't want $(common-objpfx) files to depend on miscellaneous stuff
 193 # in subdirs.
 194 ifdef subdir
 195 common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
 196 else
 197 common-before-compile = $(before-compile)
 198 endif
 199
 200 ifndef subdir
 201 # If a makefile needs to do something conditional on something that
 202 # can only be figured out from headers, write a FOO.make.c input
 203 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
 204 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
 205 #
 206 # We only generate these in the top-level makefile, to avoid any weirdness
 207 # from subdir-specific makefile tweaks creeping in on an update.
 208 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
 209         rm -f $@T $@.dT
 210         (echo '# Generated from $*.make.c by Makerules.'; \
 211          $(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
 212                -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
 213          | sed -n '/@@@/{s/@@@[  ]*\(.*\)@@@/\1/;s/[     ]*$$//p;}'; \
 214          echo 'common-generated += $(@F)'; \
 215          sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
 216          rm -f $@.dT) > $@T
 217         mv -f $@T $@
 218 endif
 219
 220 ifdef subdir
 221 sed-remove-dotdot := -e 's@  *\.\.\/\([^        \]*\)@ $$(..)\1@g' \
 222                      -e 's@^\.\.\/\([^  \]*\)@$$(..)\1@g'
 223 else
 224 sed-remove-dotdot := -e 's@  *\([^      \/$$][^         \]*\)@ $$(..)\1@g' \
 225                      -e 's@^\([^        \/$$][^         \]*\)@$$(..)\1@g'
 226 endif
 227
 228 ifdef gen-py-const-headers
 229 # We'll use a static pattern rule to match .pysym files with their
 230 # corresponding generated .py files.
 231 # The generated .py files go in the submodule's dir in the glibc build dir.
 232 py-const-files := $(patsubst %.pysym,%.py,$(gen-py-const-headers))
 233 py-const-dir := $(objpfx)
 234 py-const := $(addprefix $(py-const-dir),$(py-const-files))
 235 py-const-script := $(..)scripts/gen-py-const.awk
 236
 237 # This is a hack we use to generate .py files with constants for Python
 238 # pretty printers.  It works the same way as gen-as-const.
 239 # See scripts/gen-py-const.awk for details on how the awk | gcc mechanism
 240 # works.
 241 #
 242 # $@.tmp and $@.tmp2 are temporary files we use to store the partial contents
 243 # of the target file.  We do this instead of just writing on $@ because, if the
 244 # build process terminates prematurely, re-running Make wouldn't run this rule
 245 # since Make would see that the target file already exists (despite it being
 246 # incomplete).
 247 #
 248 # The sed line replaces "@name@SOME_NAME@value@SOME_VALUE@" strings from the
 249 # output of 'gcc -S' with "SOME_NAME = SOME_VALUE" strings.
 250 # The '-n' option, combined with the '/p' command, makes sed output only the
 251 # modified lines instead of the whole input file.  The output is redirected
 252 # to a .py file; we'll import it in the pretty printers file to read
 253 # the constants generated by gen-py-const.awk.
 254 # The regex has two capturing groups, for SOME_NAME and SOME_VALUE
 255 # respectively.  Notice SOME_VALUE may be prepended by a special character,
 256 # depending on the assembly syntax (e.g. immediates are prefixed by a '$'
 257 # in AT&T x86, and by a '#' in ARM).  We discard it using a complemented set
 258 # before the second capturing group.
 259 $(py-const): $(py-const-dir)%.py: %.pysym $(py-const-script) \
 260              $(common-before-compile)
 261         $(make-target-directory)
 262         $(AWK) -f $(py-const-script) $< \
 263                | $(CC) -S -o $@.tmp $(CFLAGS) $(CPPFLAGS) -x c -
 264         echo '# GENERATED FILE\n' > $@.tmp2
 265         echo '# Constant definitions for pretty printers.' >> $@.tmp2
 266         echo '# See gen-py-const.awk for details.\n' >> $@.tmp2
 267         sed -n -r 's/^.*@name@([^@]+)@value@[^[:xdigit:]Xx-]*([[:xdigit:]Xx-]+)@.*/\1 = \2/p' \
 268             $@.tmp >> $@.tmp2
 269         mv -f $@.tmp2 $@
 270         rm -f $@.tmp
 271
 272 generated += $(py-const)
 273 endif  # gen-py-const-headers
 274
 275 ifdef gen-as-const-headers
 276 # Generating headers for assembly constants.
 277 # We need this defined early to get into before-compile before
 278 # it's used in sysd-rules, below.
 279 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
 280                                            %.sym $(common-before-compile)
 281         $(AWK) -f $< $(filter %.sym,$^) \
 282         | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \
 283                 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
 284         sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
 285                 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
 286         rm -f $(@:.h.d=.h)T3
 287         sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
 288             $(@:.h=.h.d)T > $(@:.h=.h.d)T2
 289         rm -f $(@:.h=.h.d)T
 290         mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
 291         mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
 292 vpath %.sym $(sysdirs)
 293 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 294
 295 tests-internal += $(gen-as-const-headers:%.sym=test-as-const-%)
 296 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
 297 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
 298                             %.sym $(common-objpfx)%.h
 299         ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
 300          $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
 301          echo '#include "$(..)test-skeleton.c"') > $@T
 302         mv -f $@T $@
 303 endif
 304 \f
 305 ifeq (yes,$(build-shared))
 306 # Generate the header containing the names of all shared libraries.
 307 # We use a stamp file to avoid unnecessary recompilations.
 308 before-compile += $(common-objpfx)gnu/lib-names.h
 309 ifeq ($(soversions.mk-done),t)
 310 ifndef abi-variants
 311 lib-names-h-abi = gnu/lib-names.h
 312 lib-names-stmp-abi = gnu/lib-names.stmp
 313 else
 314 lib-names-h-abi = gnu/lib-names-$(default-abi).h
 315 lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp
 316 before-compile += $(common-objpfx)$(lib-names-h-abi)
 317 common-generated += gnu/lib-names.h
 318 install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi)
 319 $(common-objpfx)gnu/lib-names.h:
 320         $(make-target-directory)
 321         { \
 322          echo '/* This file is automatically generated.';\
 323          echo '   It defines macros to allow user program to find the shared'; \
 324          echo '   library files which come as part of GNU libc.  */'; \
 325          echo '#ifndef __GNU_LIB_NAMES_H'; \
 326          echo '#define __GNU_LIB_NAMES_H        1'; \
 327          echo ''; \
 328          $(if $(abi-includes), \
 329           $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 330           echo '';) \
 331          $(foreach v,$(abi-variants),\
 332          $(if $(abi-$(v)-condition),\
 333          echo '#if $(abi-$(v)-condition)'; \
 334          echo '# include <gnu/lib-names-$(v).h>'); \
 335          $(if $(abi-$(v)-condition),echo '#endif';)) \
 336          echo ''; \
 337          echo '#endif   /* gnu/lib-names.h */'; \
 338         } >  $@
 339 endif
 340 $(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @:
 341 $(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \
 342                                        $(common-objpfx)soversions.i
 343         $(make-target-directory)
 344         { \
 345          $(if $(abi-variants), \
 346          echo '/* This file is automatically generated.  */';\
 347          echo '#ifndef __GNU_LIB_NAMES_H'; \
 348          echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \
 349          echo '#endif';, \
 350          echo '/* This file is automatically generated.';\
 351          echo '   It defines macros to allow user program to find the shared'; \
 352          echo '   library files which come as part of GNU libc.  */'; \
 353          echo '#ifndef __GNU_LIB_NAMES_H'; \
 354          echo '#define __GNU_LIB_NAMES_H        1';) \
 355          echo ''; \
 356          ($(foreach s,$(all-sonames), echo $(s);)) \
 357          | LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \
 358          $(if $(abi-variants),, \
 359          echo ''; \
 360          echo '#endif   /* gnu/lib-names.h */';) \
 361         } >  ${@:stmp=T}
 362         $(move-if-change) ${@:stmp=T} ${@:stmp=h}
 363         touch $@
 364 endif
 365 common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi)
 366 endif
 367 \f
 368 ###############################################################################
 369 # NOTE!  Everything adding to before-compile needs to come before this point! #
 370 ###############################################################################
 371
 372 # Generate an ordered list of implicit rules which find the source files in
 373 # each sysdep directory.  The old method was to use vpath to search all the
 374 # sysdep directories.  However, that had the problem that a .S file in a
 375 # later directory would be chosen over a .c file in an earlier directory,
 376 # which does not preserve the desired sysdeps ordering behavior.
 377
 378 # System-dependent makefiles can put in `inhibit-sysdep-asm' regexps
 379 # matching sysdep directories whose assembly source files should be
 380 # suppressed.
 381
 382 -include $(common-objpfx)sysd-rules
 383 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 384 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 385 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 386 sysd-rules-force = FORCE
 387 FORCE:
 388 endif
 389 $(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
 390                             $(common-objpfx)config.make $(..)Makerules \
 391                             $(sysdep-makefiles) $(sysdep-makeconfigs) \
 392                             $(sysd-rules-force)
 393         -@rm -f $@T
 394         LC_ALL=C $(AWK) -f $< > $@T \
 395                         -v all_object_suffixes='$(all-object-suffixes)' \
 396                         -v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
 397                         -v sysd_rules_patterns='$(sysd-rules-patterns)' \
 398                         -v config_sysdirs='$(config-sysdirs)'
 399         mv -f $@T $@
 400
 401 ifndef sysd-rules-done
 402 # Don't do deps until this exists, because it provides rules to make the deps.
 403 no_deps=t
 404 endif
 405
 406 define o-iterator-doit
 407 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 408 endef
 409 object-suffixes-left := $(all-object-suffixes)
 410 include $(o-iterator)
 411
 412 define o-iterator-doit
 413 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 414 endef
 415 object-suffixes-left := $(all-object-suffixes)
 416 include $(o-iterator)
 417
 418 define o-iterator-doit
 419 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
 420 endef
 421 object-suffixes-left := $(all-object-suffixes)
 422 include $(o-iterator)
 423
 424 # Omit the objpfx rules when building in the source tree, because
 425 # objpfx is empty and so these rules just override the ones above.
 426 ifdef objpfx
 427 # Define first rules to find the source files in $(objpfx).
 428 # Generated source files will end up there.
 429 define o-iterator-doit
 430 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 431 endef
 432 object-suffixes-left := $(all-object-suffixes)
 433 include $(o-iterator)
 434
 435 define o-iterator-doit
 436 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 437 endef
 438 object-suffixes-left := $(all-object-suffixes)
 439 include $(o-iterator)
 440 endif
 441
 442 # Generate version maps, but wait until sysdep-subdirs is known
 443 ifeq ($(sysd-sorted-done),t)
 444 ifeq ($(build-shared),yes)
 445 -include $(common-objpfx)sysd-versions
 446 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 447 common-generated += $(version-maps)
 448 postclean-generated += sysd-versions Versions.all abi-versions.h \
 449                        Versions.def Versions.v.i Versions.v
 450
 451 ifndef avoid-generated
 452 ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
 453 sysd-versions-force = FORCE
 454 FORCE:
 455 endif
 456
 457 $(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \
 458                               $(common-objpfx)Versions.v
 459         LC_ALL=C $(AWK) -f $^ > $@T
 460         mv -f $@T $@
 461
 462 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 463                               $(common-objpfx)soversions.i \
 464                               $(common-objpfx)Versions.def
 465         { while read which lib version setname; do \
 466             test x"$$which" = xDEFAULT || continue; \
 467             test -z "$$setname" || echo "$$lib : $$setname"; \
 468           done < $(word 2,$^); \
 469           cat $(word 3,$^); \
 470         } | LC_ALL=C $(AWK) -f $< > $@T
 471         mv -f $@T $@
 472 # See %.v/%.v.i implicit rules in Makeconfig.
 473 $(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
 474                               $(wildcard $(sysdirs:%=%/Versions)) \
 475                               $(sysd-versions-force)
 476 $(common-objpfx)sysd-versions: $(common-objpfx)versions.stmp
 477 $(common-objpfx)versions.stmp: $(common-objpfx)Versions.all \
 478                                $(common-objpfx)Versions.v \
 479                                $(..)scripts/versions.awk
 480         ( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
 481           cat $(word 2,$^) \
 482           | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 483                             -v move_if_change='$(move-if-change)' \
 484                             -f $(word 3,$^); \
 485         ) > $(common-objpfx)sysd-versionsT
 486         mv -f $(common-objpfx)sysd-versionsT $(common-objpfx)sysd-versions
 487         touch $@
 488 endif # avoid-generated
 489 endif # $(build-shared) = yes
 490 endif # sysd-sorted-done
 491
 492 # Generate .dT files as we compile.
 493 compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
 494 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 495 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 496 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 497
 498 # Like compile-mkdep-flags, but for use with $(BUILD_CC).  We don't want to
 499 # track system includes here, they may spuriously trigger an install rule,
 500 # and would cause the check-local-headers test to fail.
 501 native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@
 502
 503 # GCC can grok options after the file name, and it looks nicer that way.
 504 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 505 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
 506 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
 507                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 508 COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
 509 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
 510                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 511
 512 # We need this for the output to go in the right place.  It will default to
 513 # empty if make was configured to work with a cc that can't grok -c and -o
 514 # together.  You can't compile the C library with such a compiler.
 515 OUTPUT_OPTION = -o $@
 516
 517 # This is the end of the pipeline for compiling generated C code.
 518 compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)
 519
 520 # We need the $(CFLAGS) to be in there to have the right predefines during
 521 # the dependency run for C sources.  But having it for assembly sources can
 522 # get the wrong predefines.
 523 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
 524
 525 define +make-deps
 526 $(make-target-directory)
 527 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
 528              $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
 529 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 530 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
 531 mv -f $(@:.d=.T) $@ $(generate-md5)
 532 endef
 533
 534 ifneq (,$(objpfx))
 535 # Continuation lines here are dangerous because they introduce spaces!
 536 define sed-remove-objpfx
 537 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 538 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 539 endef
 540 endif
 541 \f
 542 # Modify the list of routines we build for different targets
 543
 544 ifeq (yes,$(build-shared))
 545 ifndef libc.so-version
 546 # Undefine this because it can't work when we libc.so is unversioned.
 547 static-only-routines =
 548 endif
 549 endif
 550
 551 elide-routines.oS += $(filter-out $(static-only-routines),\
 552                                   $(routines) $(aux) $(sysdep_routines))
 553 elide-routines.os += $(static-only-routines)
 554
 555 # If we have versioned code we don't need the old versions in any of the
 556 # static libraries.
 557 elide-routines.o  += $(shared-only-routines)
 558 elide-routines.op += $(shared-only-routines)
 559 \f
 560 # Shared library building.
 561
 562 ifeq (yes,$(build-shared))
 563
 564 # Reference map file only when shared libraries are built and a map file name
 565 # is given.
 566 ifeq ($(build-shared),yes)
 567 map-file = $(firstword $($(@F:.so=-map)) \
 568                        $(addprefix $(common-objpfx), \
 569                                    $(filter $(@F:.so=.map),$(version-maps))))
 570 load-map-file = $(map-file:%=-Wl,--version-script=%)
 571 endif
 572
 573 # Compiler arguments to use to link a shared object with libc and
 574 # ld.so.  This is intended to be as similar as possible to a default
 575 # link with an installed libc.
 576 link-libc-args = -Wl,--start-group \
 577                  $(libc-for-link) \
 578                  $(common-objpfx)libc_nonshared.a \
 579                  $(as-needed) $(elf-objpfx)ld.so $(no-as-needed) \
 580                  -Wl,--end-group
 581
 582 # The corresponding shared libc to use.  This may be modified for a
 583 # particular target.
 584 libc-for-link = $(common-objpfx)libc.so
 585
 586 # The corresponding dependencies.  As these are used in dependencies,
 587 # not just commands, they cannot use target-specific variables so need
 588 # to name both possible libc.so objects.
 589 link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
 590                  $(common-objpfx)libc_nonshared.a $(elf-objpfx)ld.so
 591
 592 # Pattern rule to build a shared object from an archive of PIC objects.
 593 # This must come after the installation rules so Make doesn't try to
 594 # build shared libraries in place from the installed *_pic.a files.
 595 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 596 # on other shared objects.  The linking with libc and ld.so is intended
 597 # to be as similar as possible to a default link with an installed libc.
 598 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(link-libc-deps)
 599         $(build-shlib) $(link-libc-args)
 600         $(call after-link,$@)
 601
 602 define build-shlib-helper
 603 $(LINK.o) -shared -static-libgcc -Wl,-O1 $(sysdep-LDFLAGS) \
 604           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(rtld-LDFLAGS) \
 605           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 606           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 607           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 608           $(LDFLAGS.so) $(LDFLAGS-lib.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 609           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 610 endef
 611
 612 ifeq (yes,$(use-default-link))
 613 # If the linker is good enough, we can let it use its default linker script.
 614 shlib-lds =
 615 shlib-lds-flags =
 616 else
 617 # binutils only position loadable notes into the first page for binaries,
 618 # not for shared objects
 619 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
 620         $(LINK.o) -shared -Wl,-O1 \
 621                   -nostdlib -nostartfiles \
 622                   $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
 623                   -Wl,--verbose 2>&1 | \
 624           sed > $@T \
 625               -e '/^=========/,/^=========/!d;/^=========/d' \
 626               $(if $(filter yes,$(have-hash-style)), \
 627                    -e 's/^.*\.gnu\.hash[        ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 628                    -e '/^[      ]*\.hash[       ]*:.*$$/{h;d;}' \
 629                    -e '/DATA_SEGMENT_ALIGN/{H;g}' \
 630                 , \
 631                    -e 's/^.*\.hash[     ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 632                ) \
 633               -e 's/^.*\*(\.dynbss).*$$/& \
 634                  PROVIDE(__start___libc_freeres_ptrs = .); \
 635                  *(__libc_freeres_ptrs) \
 636                  PROVIDE(__stop___libc_freeres_ptrs = .);/'\
 637               -e 's@^.*\*(\.jcr).*$$@& \
 638                  PROVIDE(__start___libc_subfreeres = .);\
 639                  __libc_subfreeres : { *(__libc_subfreeres) }\
 640                  PROVIDE(__stop___libc_subfreeres = .);\
 641                  PROVIDE(__start___libc_atexit = .);\
 642                  __libc_atexit : { *(__libc_atexit) }\
 643                  PROVIDE(__stop___libc_atexit = .);\
 644                  PROVIDE(__start___libc_thread_subfreeres = .);\
 645                  __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
 646                  PROVIDE(__stop___libc_thread_subfreeres = .);\
 647                  PROVIDE(__start___libc_IO_vtables = .);\
 648                  __libc_IO_vtables : { *(__libc_IO_vtables) }\
 649                  PROVIDE(__stop___libc_IO_vtables = .);\
 650                  /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
 651         test -s $@T
 652         mv -f $@T $@
 653 common-generated += shlib.lds
 654
 655 shlib-lds = $(common-objpfx)shlib.lds
 656 shlib-lds-flags = -T $(shlib-lds)
 657 endif
 658
 659 define build-shlib
 660 $(build-shlib-helper) -o $@ $(shlib-lds-flags) \
 661           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 662 endef
 663
 664 define build-module-helper
 665 $(LINK.o) -shared -static-libgcc $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
 666           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
 667           -B$(csu-objpfx) $(load-map-file) \
 668           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 669           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 670 endef
 671
 672 # This macro is similar to build-shlib but it does not define a soname
 673 # and it does not depend on the destination name to start with `lib'.
 674 # binutils only position loadable notes into the first page for binaries,
 675 # not for shared objects
 676 define build-module
 677 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 678           $(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
 679 $(call after-link,$@)
 680 endef
 681 define build-module-asneeded
 682 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 683           $(csu-objpfx)abi-note.o \
 684           -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
 685           $(link-libc-args)
 686 $(call after-link,$@)
 687 endef
 688
 689 build-module-helper-objlist = \
 690         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 691                    $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
 692                                 $(link-libc-deps),$^))
 693
 694 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 695 build-shlib-objlist = $(build-module-helper-objlist) \
 696                       $(LDLIBS-$(@F:lib%.so=%).so)
 697
 698 # Don't try to use -lc when making libc.so itself.
 699 # Also omits crti.o and crtn.o, which we do not want
 700 # since we define our own `.init' section specially.
 701 LDFLAGS-c.so = -nostdlib -nostartfiles
 702 # But we still want to link libc.so against $(libc.so-gnulib).
 703 LDLIBS-c.so += $(libc.so-gnulib)
 704 # Give libc.so an entry point and make it directly runnable itself.
 705 LDFLAGS-c.so += -e __libc_main
 706 # Pre-link the objects of libc_pic.a so that we can locally resolve
 707 # COMMON symbols before we link against ld.so.  This is because ld.so
 708 # contains some of libc_pic.a already, which will prevent the COMMONs
 709 # from being allocated in libc.so, which introduces evil dependencies
 710 # between libc.so and ld.so, which can make it impossible to upgrade.
 711 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 712         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 713         $(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
 714
 715 ifeq (,$(strip $(shlib-lds-flags)))
 716 # Generate a list of -R options to excise .gnu.glibc-stub.* sections.
 717 $(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
 718         $(OBJDUMP) -h $< | \
 719         $(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
 720                 > $@T
 721         mv -f $@T $@
 722 # Apply those -R options.
 723 $(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
 724                                    $(common-objpfx)libc_pic.os
 725         $(OBJCOPY) @$^ $@
 726 generated += libc_pic.opts libc_pic.os.clean
 727
 728 libc_pic_clean := .clean
 729 endif
 730
 731 # Build a possibly-modified version of libc_pic.a for use in building
 732 # linkobj/libc.so.
 733 ifeq (,$(filter sunrpc,$(subdirs)))
 734 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a
 735         $(make-target-directory)
 736         ln -f $< $@
 737 else
 738 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a \
 739                                     $(common-objpfx)sunrpc/librpc_compat_pic.a
 740         $(make-target-directory)
 741         (cd $(common-objpfx)linkobj; \
 742          $(AR) x ../libc_pic.a; \
 743          rm $$($(AR) t ../sunrpc/librpc_compat_pic.a | sed 's/^compat-//'); \
 744          $(AR) x ../sunrpc/librpc_compat_pic.a; \
 745          $(AR) cr libc_pic.a *.os; \
 746          rm *.os)
 747 endif # $(subdirs) contains sunrpc
 748
 749 # Clear link-libc-deps for the libc.so libraries so build-shlibs does not
 750 # filter ld.so out of the list of linked objects.
 751 $(common-objpfx)libc.so: link-libc-deps = # empty
 752 $(common-objpfx)linkobj/libc.so: link-libc-deps = # empty
 753
 754 # Use our own special initializer and finalizer files for the libc.so
 755 # libraries.
 756 $(common-objpfx)libc.so: $(elf-objpfx)soinit.os \
 757                          $(common-objpfx)libc_pic.os$(libc_pic_clean) \
 758                          $(elf-objpfx)sofini.os \
 759                          $(elf-objpfx)interp.os \
 760                          $(elf-objpfx)ld.so \
 761                          $(shlib-lds)
 762         $(build-shlib)
 763         $(call after-link,$@)
 764
 765 $(common-objpfx)linkobj/libc.so: $(elf-objpfx)soinit.os \
 766                          $(common-objpfx)linkobj/libc_pic.a \
 767                          $(elf-objpfx)sofini.os \
 768                          $(elf-objpfx)interp.os \
 769                          $(elf-objpfx)ld.so \
 770                          $(shlib-lds)
 771         $(build-shlib)
 772         $(call after-link,$@)
 773
 774 ifeq ($(build-shared),yes)
 775 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 776 endif
 777 common-generated += libc.so libc_pic.os
 778 ifdef libc.so-version
 779 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 780         $(make-link)
 781 common-generated += libc.so$(libc.so-version)
 782 endif
 783 endif
 784 \f
 785 # Figure out the source filenames in this directory.
 786
 787 override sources := $(addsuffix .c,\
 788                         $(filter-out $(elided-routines),\
 789                             $(routines) $(aux) \
 790                             $(sysdep_routines)))
 791 sysdep_routines := $(sysdep_routines)
 792
 793 headers := $(headers) $(sysdep_headers)
 794
 795 # This is the list of all object files, gotten by
 796 # replacing every ".c" in `sources' with a ".o".
 797 override objects := $(addprefix $(objpfx),$(sources:.c=.o))
 798
 799
 800 # The makefile may define $(extra-libs) with `libfoo libbar'
 801 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 802 ifdef extra-libs
 803 # extra-lib.mk is included once for each extra lib to define rules
 804 # to build it, and to add its objects to the various variables.
 805 # During its evaluation, $(lib) is set to the name of the library.
 806 extra-libs-left := $(extra-libs)
 807 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 808 endif
 809
 810
 811 # The makefile may define $(modules-names) to build additional modules.
 812 # These are built with $(build-module), except any in $(modules-names-nobuild).
 813 # MODULE_NAME=extramodules, except any in $(modules-names-tests).
 814 ifdef modules-names
 815 cpp-srcs-left := $(filter-out $(modules-names-tests),$(modules-names))
 816 ifneq (,$(cpp-srcs-left))
 817 lib := extramodules
 818 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
 819 endif
 820
 821 ifdef modules-names-tests
 822 cpp-srcs-left := $(filter $(modules-names-tests),$(modules-names))
 823 ifneq (,$(cpp-srcs-left))
 824 lib := testsuite
 825 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
 826 endif
 827 endif
 828
 829 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
 830 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
 831                 $(objpfx)%.os $(shlib-lds) $(link-libs-deps)
 832         $(build-module)
 833 endif
 834 \f
 835 +depfiles := $(sources:.c=.d) \
 836              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 837              $(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
 838              $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
 839              $(addsuffix .d,$(tests) $(tests-internal) $(xtests) $(test-srcs))
 840 ifeq ($(build-programs),yes)
 841 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 842 endif
 843 +depfiles := $(addprefix $(objpfx),\
 844                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 845                                       $(+depfiles)))
 846 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
 847 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
 848              $(wildcard $(all-dt-files:.dt=.d))
 849
 850 # This is a funny rule in that it removes its input file.
 851 %.d: %.dt
 852         @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
 853          mv -f $(@:.d=.T) $@ && \
 854          rm -f $<
 855
 856 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
 857 # They will be generated when they're needed, and trying too early won't work.
 858 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 859 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
 860                                                 $(+gen-as-const)))
 861
 862 ifdef +depfiles
 863 ifneq ($(no_deps),t)
 864 -include $(+depfiles)
 865 endif
 866 endif
 867 \f\f
 868 # Maximize efficiency by minimizing the number of rules.
 869 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 870 # Don't define any builtin rules.
 871 MAKEFLAGS := $(MAKEFLAGS)r
 872
 873 # Generic rule for making directories.
 874 %/:
 875 # mkdir isn't smart enough to strip a trailing /.
 876 # We always require a mkdir which supports the -p option to avoid error
 877 # messages in case of races.
 878         mkdir -p $(@:%/=%)
 879 \f
 880 # Make sure that object files are not removed
 881 # when they are intermediates between sources and library members.
 882 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 883
 884 # Make sure that the parent library archive is never removed.
 885 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 886 \f
 887 # Use the verbose option of ar and tar when not running silently.
 888 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 889 verbose := v
 890 else                                            # -s
 891 verbose :=
 892 endif                                           # not -s
 893
 894 ARFLAGS := r$(verbose)
 895 CREATE_ARFLAGS := cru$(verbose)
 896 \f
 897 # This makes all the object files in the parent library archive.
 898
 899 .PHONY: lib lib-noranlib
 900 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 901 lib-noranlib: libobjs
 902
 903 # For object-suffix $o, the list of objects with that suffix.
 904 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 905 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 906                                                        $(elide-routines$o)),\
 907                                             $(objects))) \
 908             $(addprefix $(objpfx),$(o-objects$o))
 909
 910 others: $(addprefix $(objpfx),$(install-lib))
 911
 912 ifndef objects
 913
 914 # Create the stamp$o files to keep the parent makefile happy.
 915 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 916 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 917         $(make-target-directory)
 918         rm -f $@; > $@
 919 else
 920
 921 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 922 # timestamp file; these rules (one explicit rule is generated for each
 923 # object suffix) write a list of objects to update in the stamp file.
 924 # The parent will then actually add them all to the archive in the
 925 # archive rule, below.
 926 define o-iterator-doit
 927 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 928 endef
 929 define do-stamp
 930 $(make-target-directory)
 931 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 932 mv -f $@T $@
 933 endef
 934 object-suffixes-left := $(object-suffixes-for-libc)
 935 include $(o-iterator)
 936
 937 endif
 938
 939 # Now define explicit rules to build the library archives; these depend
 940 # on the stamp files built above.
 941 define o-iterator-doit
 942 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 943                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 944 endef
 945 define do-makelib
 946 cd $(common-objdir) && \
 947 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 948 endef
 949 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 950 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 951 ifndef subdir
 952 $(subdirs-stamps): subdir_lib;
 953 endif
 954 object-suffixes-left = $(object-suffixes-for-libc)
 955 include $(o-iterator)
 956
 957
 958 # This makes all the object files.
 959 .PHONY: objects objs libobjs extra-objs
 960 objects objs: libobjs extra-objs
 961 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 962 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 963
 964 # Canned sequence for building an extra library archive.
 965 define build-extra-lib
 966 $(patsubst %/,cd % &&,$(objpfx)) \
 967 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 968       $(patsubst $(objpfx)%,%,$^)
 969 endef
 970 \f
 971 # Installation.
 972
 973 .PHONY: force-install
 974 force-install:
 975
 976 # $(install-lib) are installed from the object directory into $(libdir);
 977 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 978 # unless they also appear in $(non-lib.a).  $(install-data) are installed as
 979 # they are into $(datadir).  $(headers) are installed as they are in
 980 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 981 # are installed from the object directory into $(bindir), $(bindir) and
 982 # $(sbindir), respectively.  $(install-others) and $(install-others-programs)
 983 # are absolute path names of files to install; rules to install them are
 984 # defined elsewhere.
 985
 986 # The simple library name to install libc.a under.
 987 # This could be defined by a sysdep Makefile.
 988 ifndef libc-name
 989 libc-name := c
 990 endif
 991
 992 define do-install
 993 $(make-target-directory)
 994 $(INSTALL_DATA) $< $@
 995 endef
 996
 997 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 998 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 999 define make-target-directory
1000 $(addprefix $(..)./scripts/mkinstalldirs ,\
1001             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
1002 endef
1003
1004 # Any directory (parent or subdir) should install libc.a; this way
1005 # "make install" in a subdir is guaranteed to install everything it changes.
1006 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
1007                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
1008                                                      $(libprefix)$(libc-name)))
1009
1010 .PHONY: check-install-supported
1011 check-install-supported:
1012
1013 # Check to see if the prefix or exec_prefix GNU standard variable
1014 # has been overridden on the command line and, if so, fail with
1015 # an error message since doing so is not supported (set DESTDIR
1016 # instead).
1017 ifeq ($(origin prefix),command line)
1018 check-install-supported:
1019         $(error Overriding prefix is not supported. Set DESTDIR instead.)
1020 endif
1021
1022 ifeq ($(origin exec_prefix),command line)
1023 check-install-supported:
1024         $(error Overriding exec_prefix is not supported. Set DESTDIR instead.)
1025 endif
1026
1027 install: check-install-supported
1028
1029 install: $(installed-libcs)
1030 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
1031         $(make-target-directory)
1032         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
1033
1034 define do-install-program
1035 $(make-target-directory)
1036 $(INSTALL_PROGRAM) $< $@.new
1037 mv -f $@.new $@
1038 endef
1039
1040 define do-install-script
1041 $(make-target-directory)
1042 $(INSTALL_SCRIPT) $< $@.new
1043 mv -f $@.new $@
1044 endef
1045
1046 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
1047 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
1048
1049 ifeq (yes,$(build-shared))
1050 # Find which .so's have versions.
1051 versioned := $(strip $(foreach so,$(install-lib.so),\
1052                                $(patsubst %,$(so),$($(so)-version))))
1053
1054 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
1055 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
1056
1057 # For versioned libraries, we install three files:
1058 #       $(inst_libdir)/libfoo.so        -- for linking, symlink or ld script
1059 #       $(inst_slibdir)/libfoo.so.NN    -- for loading by SONAME, symlink
1060 #       $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
1061 lib-version := $(firstword $($(subdir)-version) $(version))
1062 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
1063                       $(foreach L,$(install-lib.so-versioned),\
1064                                 $(inst_libdir)/$L \
1065                                 $(inst_slibdir)/$(L:.so=)-$(lib-version).so \
1066                                 $(inst_slibdir)/$L$($L-version))
1067
1068 # Install all the unversioned shared libraries.
1069 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
1070     $(objpfx)%.so $(+force)
1071         $(do-install-program)
1072
1073 ifneq ($(findstring -s,$(LN_S)),)
1074 define make-link
1075 rm -f $@.new
1076 $(SHELL) $(..)scripts/rellns-sh $< $@.new
1077 mv -f $@.new $@
1078 endef
1079 else
1080 # If we have no symbolic links don't bother with rellns-sh.
1081 define make-link
1082 rm -f $@.new
1083 $(LN_S) $< $@.new
1084 mv -f $@.new $@
1085 endef
1086 endif
1087
1088 ifeq (yes,$(build-shared))
1089 ifeq (no,$(cross-compiling))
1090 symbolic-link-prog := $(elf-objpfx)sln
1091 symbolic-link-list := $(elf-objpfx)symlink.list
1092 define make-shlib-link
1093 echo `$(..)scripts/rellns-sh -p $< $@` $@ >> $(symbolic-link-list)
1094 endef
1095 else # cross-compiling
1096 # We need a definition that can be used by elf/Makefile's install rules.
1097 symbolic-link-prog = $(LN_S)
1098 endif
1099 endif
1100 ifndef make-shlib-link
1101 define make-shlib-link
1102 rm -f $@
1103 $(LN_S) `$(..)scripts/rellns-sh -p $< $@` $@
1104 endef
1105 endif
1106
1107 ifdef libc.so-version
1108 # For a library specified to be version N, install three files:
1109 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
1110 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
1111
1112 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
1113                                            $(+force)
1114         $(make-shlib-link)
1115 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
1116         $(do-install-program)
1117 install: $(inst_slibdir)/libc.so$(libc.so-version)
1118
1119 # This fragment of linker script gives the OUTPUT_FORMAT statement
1120 # for the configuration we are building.  We put this statement into
1121 # the linker scripts we install for -lc et al so that they will not be
1122 # used by a link for a different format on a multi-architecture system.
1123 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
1124                             $(common-objpfx)config.make \
1125                             $(common-objpfx)config.h $(..)Makerules
1126 ifneq (unknown,$(output-format))
1127         echo > $@.new 'OUTPUT_FORMAT($(output-format))'
1128 else
1129         $(LINK.o) -shared $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
1130                   $(LDFLAGS.so) $(LDFLAGS-lib.so) \
1131                   -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
1132         | sed -n -f $< > $@.new
1133         test -s $@.new
1134         rm -f $@.so
1135 endif
1136         mv -f $@.new $@
1137 common-generated += format.lds
1138
1139 ifndef subdir
1140 # What we install as libc.so for programs to link against is in fact a
1141 # link script.  It contains references for the various libraries we need.
1142 # The libc.so object is not complete since some functions are only defined
1143 # in libc_nonshared.a.
1144 # We need to use absolute paths since otherwise local copies (if they exist)
1145 # of the files are taken by the linker.
1146 install: $(inst_libdir)/libc.so
1147 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
1148                         $(common-objpfx)libc.so$(libc.so-version) \
1149                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
1150                                                   $(libprefix)$(libc-name)) \
1151                         $(+force)
1152         (echo '/* GNU ld script';\
1153          echo '   Use the shared library, but some functions are only in';\
1154          echo '   the static library, so try that secondarily.  */';\
1155          cat $<; \
1156          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
1157               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1158               ' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
1159         ) > $@.new
1160         mv -f $@.new $@
1161
1162 endif
1163
1164 else
1165 install: $(inst_slibdir)/libc.so
1166 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1167         $(do-install-program)
1168 endif
1169
1170 ifneq (,$(versioned))
1171 # Produce three sets of rules as above for all the smaller versioned libraries.
1172
1173 define o-iterator-doit
1174 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1175 endef
1176 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1177 ifneq (,$(object-suffixes-left))
1178 include $(o-iterator)
1179 endif
1180
1181 # Make symlinks in the build directory, because the versioned names might
1182 # be referenced by a DT_NEEDED in another library.
1183 define o-iterator-doit
1184 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1185 endef
1186 object-suffixes-left := $(versioned)
1187 include $(o-iterator)
1188
1189 generated += $(foreach o,$(versioned),$o$($o-version))
1190
1191 ifeq (,$($(subdir)-version))
1192 define o-iterator-doit
1193 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1194                                  $(+force);
1195         $$(make-shlib-link)
1196 endef
1197 object-suffixes-left := $(versioned)
1198 include $(o-iterator)
1199
1200 define o-iterator-doit
1201 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1202         $$(do-install-program)
1203 endef
1204 object-suffixes-left := $(versioned)
1205 include $(o-iterator)
1206 else
1207 define o-iterator-doit
1208 $(inst_slibdir)/$o$($o-version): \
1209   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1210         $$(make-shlib-link)
1211 endef
1212 object-suffixes-left := $(versioned)
1213 include $(o-iterator)
1214
1215 define o-iterator-doit
1216 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1217         $$(do-install-program)
1218 endef
1219 object-suffixes-left := $(versioned)
1220 include $(o-iterator)
1221 endif
1222 endif
1223
1224 define do-install-so
1225 $(do-install-program)
1226 $(patsubst %,$(LN_S) -f $(@F) \
1227                         $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1228            $(filter-out %.so,$@))
1229 endef
1230
1231 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1232 $(foreach v,$(so-versions),\
1233           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1234                                                $(+force)
1235         $(do-install-so)
1236 $(foreach v,$(so-versions),\
1237           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1238         $(do-install-so)
1239 endif
1240
1241 ifdef install-bin
1242 $(addprefix $(inst_bindir)/,$(install-bin)): \
1243     $(inst_bindir)/%: $(objpfx)% $(+force)
1244         $(do-install-program)
1245 endif
1246 ifdef install-bin-script
1247 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1248     $(inst_bindir)/%: $(objpfx)% $(+force)
1249         $(do-install-script)
1250 endif
1251 ifdef install-rootsbin
1252 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1253    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1254         $(do-install-program)
1255 endif
1256 ifdef install-sbin
1257 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1258     $(inst_sbindir)/%: $(objpfx)% $(+force)
1259         $(do-install-program)
1260 endif
1261 ifdef install-lib
1262 install-lib.a := $(filter lib%.a,$(install-lib))
1263 install-lib.a := $(filter-out $(install-lib-ldscripts),$(install-lib.a))
1264 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1265 ifdef install-lib-non.a
1266 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1267   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1268         $(do-install)
1269 endif
1270 ifdef install-lib.a
1271 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1272   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1273         $(do-install)
1274 endif
1275 endif
1276 ifdef install-data
1277 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1278         $(do-install)
1279 endif
1280 headers := $(strip $(headers))
1281 ifdef headers
1282 # This implicit rule installs headers from the source directory.
1283 # It may be ignored in preference to rules from sysd-rules to find
1284 # headers in the sysdeps tree.
1285 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1286         $(do-install)
1287 $(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
1288         $(do-install)
1289 $(inst_includedir)/%.h: %.h $(+force)
1290         $(do-install)
1291 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1292         $(do-install)
1293 headers-nonh := $(filter-out %.h,$(headers))
1294 ifdef headers-nonh
1295 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1296                                                  % $(+force)
1297         $(do-install)
1298 endif   # headers-nonh
1299 endif   # headers
1300
1301 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1302         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1303         install-data-nosubdir install-headers-nosubdir
1304 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1305 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1306 install-rootsbin-nosubdir: \
1307         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1308 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1309 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1310                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1311                        $(addprefix $(libprefix),$(install-lib-non.a)))
1312 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1313 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1314 install-others-nosubdir: $(install-others)
1315 install-others-programs-nosubdir: $(install-others-programs)
1316
1317 # We need all the `-nosubdir' targets so that `install' in the parent
1318 # doesn't depend on several things which each iterate over the subdirs.
1319 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1320 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1321 install-%:: install-%-nosubdir ;
1322
1323 .PHONY: install install-no-libc.a-nosubdir
1324 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1325                             install-lib-nosubdir install-others-nosubdir
1326 ifeq ($(build-programs),yes)
1327 install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1328                             install-rootsbin-nosubdir install-sbin-nosubdir \
1329                             install-others-programs-nosubdir
1330 endif
1331 install: install-no-libc.a-nosubdir
1332 \f
1333 # Command to compile $< using the native libraries.
1334 define native-compile
1335 $(make-target-directory)
1336 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1337             $< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
1338 endef
1339
1340 # We always want to use configuration definitions.
1341 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
1342                    -DIS_IN_build -include $(common-objpfx)config.h
1343
1344 # Support the GNU standard name for this target.
1345 .PHONY: check
1346 check: tests
1347 # Special target to run tests which cannot be run unconditionally.
1348 # Maintainers should use this target.
1349 .PHONY: xcheck
1350 xcheck: xtests
1351
1352 # The only difference between MODULE_NAME=testsuite and MODULE_NAME=nonlib is
1353 # that almost all internal declarations from config.h, libc-symbols.h, and
1354 # include/*.h are not available to 'testsuite' code, but are to 'nonlib' code.
1355 all-testsuite := $(strip $(tests) $(xtests) $(test-srcs) $(test-extras))
1356 ifneq (,$(all-testsuite))
1357 cpp-srcs-left = $(all-testsuite)
1358 lib := testsuite
1359 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
1360 endif
1361
1362 all-nonlib := $(strip $(tests-internal) $(test-internal-extras) $(others))
1363 ifneq (,$(all-nonlib))
1364 cpp-srcs-left = $(all-nonlib)
1365 lib := nonlib
1366 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
1367 endif
1368
1369
1370 ifeq ($(build-shared),yes)
1371 # Generate normalized lists of symbols, versions, and data sizes.
1372 # This is handy for checking against existing library binaries.
1373
1374 %.symlist: $(..)scripts/abilist.awk %.dynsym
1375         LC_ALL=C $(AWK) -f $^ > $@T
1376         mv -f $@T $@
1377
1378 %.dynsym: %.so
1379         LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
1380         mv -f $@T $@
1381
1382 # A sysdeps/.../Makefile can set abilist-pattern to something like
1383 # %-foo.abilist to look for libc-foo.abilist instead of libc.abilist.
1384 # This makes sense if multiple ABIs can be most cleanly supported by a
1385 # configuration without using separate sysdeps directories for each.
1386 ifdef abilist-pattern
1387 vpath $(abilist-pattern) $(+sysdep_dirs)
1388 endif
1389
1390 vpath %.abilist $(+sysdep_dirs)
1391
1392 # The .PRECIOUS rule prevents the files built by an implicit rule whose
1393 # target pattern is %.symlist from being considered "intermediate files"
1394 # and automatically removed.  We only want these files to be removed by
1395 # 'make clean', which is handled by the 'generated' variable.
1396 .PRECIOUS: %.symlist
1397 generated += $(extra-libs:=.symlist)
1398
1399 ifdef abilist-pattern
1400 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1401                           $(objpfx)%.symlist
1402         $(check-abi-pattern); \
1403         $(evaluate-test)
1404 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1405                           $(common-objpfx)%.symlist
1406         $(check-abi-pattern); \
1407         $(evaluate-test)
1408 endif
1409 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1410                           $(objpfx)%.symlist
1411         $(check-abi); \
1412         $(evaluate-test)
1413 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1414                           $(common-objpfx)%.symlist
1415         $(check-abi); \
1416         $(evaluate-test)
1417 define check-abi-pattern
1418         diff -p -U 0 $(filter $(abilist-pattern),$^) $(filter %.symlist,$^) \
1419              > $@
1420 endef
1421 define check-abi
1422         diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^) > $@
1423 endef
1424
1425 ifdef abilist-pattern
1426 update-abi-%: $(objpfx)%.symlist $(abilist-pattern)
1427         $(update-abi-pattern)
1428 update-abi-%: $(common-objpfx)%.symlist $(abilist-pattern)
1429         $(update-abi-pattern)
1430 endif
1431 update-abi-%: $(objpfx)%.symlist %.abilist
1432         $(update-abi)
1433 update-abi-%: $(common-objpfx)%.symlist %.abilist
1434         $(update-abi)
1435 define update-abi-pattern
1436 @if cmp -s $^ 2> /dev/null; \
1437  then \
1438       echo '+++ $(filter $(abilist-pattern),$^) is unchanged'; \
1439  else cp -f $^; \
1440       echo '*** Now check $(filter $(abilist-pattern),$^) changes for correctness ***'; \
1441  fi
1442 endef
1443 define update-abi
1444 @if cmp -s $^ 2> /dev/null; \
1445  then \
1446       echo '+++ $(filter %.abilist,$^) is unchanged'; \
1447  else cp -f $^; \
1448       echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
1449  fi
1450 endef
1451
1452 # Patch all .abilist files for one DSO.  The find command locates
1453 # abilist files for all architectures.  The regular expression in the
1454 # find invocation is needed to separate libc.abilist and
1455 # libcrypt.abilist, for example.  It assumes that abilist-pattern, if
1456 # set, is of the form "%-SUFFIX", and not "%SUFFIX", that is, there is
1457 # a non-alphanumeric seperator between the pattern and the suffix
1458 # added.  The abilist files in /generic/ are filtered out because
1459 # these are expected to remain empty.
1460 define update-all-abi
1461 $(SHELL) $(..)scripts/update-abilist.sh $^ \
1462   $$(find $(..)sysdeps \
1463     -regextype posix-egrep -regex '.*/$*([^a-z0-9].*)?\.abilist$$' \
1464     \! -regex '.*/generic/.*')
1465 endef
1466 ifdef abilist-pattern
1467 update-all-abi-%: $(abilist-pattern) $(objpfx)%.symlist
1468         $(update-all-abi)
1469 update-all-abi-%: $(abilist-pattern) $(common-objpfx)%.symlist
1470         $(update-all-abi)
1471 endif
1472 update-all-abi-%: %.abilist $(objpfx)%.symlist
1473         $(update-all-abi)
1474 update-all-abi-%: %.abilist $(common-objpfx)%.symlist
1475         $(update-all-abi)
1476
1477 .PHONY: update-abi update-all-abi check-abi
1478 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1479 update-all-abi: $(patsubst %.so,update-all-abi-%,$(install-lib.so-versioned))
1480 check-abi-list = $(patsubst %.so,$(objpfx)check-abi-%.out, \
1481                                  $(install-lib.so-versioned))
1482 check-abi: $(check-abi-list)
1483 ifdef subdir
1484 subdir_check-abi: check-abi
1485 subdir_update-abi: update-abi
1486 subdir_update-all-abi: update-all-abi
1487 else
1488 check-abi: subdir_check-abi
1489         if grep -q '^FAIL:' $(objpfx)*/check-abi*.test-result; then \
1490                 cat $(objpfx)*/check-abi*.out && exit 1; fi
1491 update-abi: subdir_update-abi
1492 update-all-abi: subdir_update-all-abi
1493 endif
1494
1495 ifeq ($(subdir),elf)
1496 check-abi: $(objpfx)check-abi-libc.out
1497 tests-special += $(objpfx)check-abi-libc.out
1498 update-abi: update-abi-libc
1499 update-all-abi: update-all-abi-libc
1500 common-generated += libc.symlist
1501 endif
1502
1503 ifeq ($(build-shared),yes)
1504 ifdef subdir
1505 tests-special += $(check-abi-list)
1506 endif
1507 endif
1508
1509 endif
1510 \f
1511 # These will have been set by sysdeps/posix/Makefile.
1512 L_tmpnam  ?= 1
1513 TMP_MAX   ?= 0
1514 L_ctermid ?= 1
1515 L_cuserid ?= 1
1516
1517 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1518
1519 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1520 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1521                    $(common-objpfx)config.make
1522         $(make-target-directory)
1523         { echo '#include "$(..)posix/bits/posix1_lim.h"';               \
1524         } |                                                             \
1525         $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)'   \
1526               $(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
1527         sed $(sed-remove-objpfx) $(sed-remove-dotdot)                   \
1528             $(@:st=dT) > $(@:st=dt)
1529         mv -f $(@:st=dt) $(@:st=d)
1530         fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`;       \
1531         filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`;    \
1532         fopen_max=$${fopen_max:-16};                                    \
1533         filename_max=$${filename_max:-1024};                            \
1534         sed -e "s/@FOPEN_MAX@/$$fopen_max/"                             \
1535             -e "s/@FILENAME_MAX@/$$filename_max/"                       \
1536             -e "s/@L_tmpnam@/$(L_tmpnam)/"                              \
1537             -e "s/@TMP_MAX@/$(TMP_MAX)/"                                \
1538             -e "s/@L_ctermid@/$(L_ctermid)/"                            \
1539             -e "s/@L_cuserid@/$(L_cuserid)/"                            \
1540             $< > $(@:st=h.new)
1541         $(move-if-change) $(@:st=h.new) $(@:st=h)
1542 # Remove these last so that they can be examined if something went wrong.
1543         rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1544         touch $@
1545 # Get dependencies.
1546 ifndef no_deps
1547 -include $(stdio_lim:h=d)
1548 endif
1549 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1550 \f
1551 FORCE:
1552
1553 .PHONY: echo-headers
1554 echo-headers:
1555         @echo $(headers)
1556
1557 %.bz2: %; bzip2 -9vk $<
1558 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1559 %.xz: %; xz -9evk $<
1560 \f
1561 # Common cleaning targets.
1562
1563 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1564 clean: common-clean
1565 mostlyclean: common-mostlyclean
1566
1567 do-tests-clean:
1568         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) \
1569                                                       $(tests-internal) \
1570                                                       $(xtests) \
1571                                                       $(test-srcs)) \
1572                                      $(addsuffix .test-result,$(tests) \
1573                                                               $(tests-internal) \
1574                                                               $(xtests) \
1575                                                               $(test-srcs)))
1576
1577 # Remove the object files.
1578 common-mostlyclean:
1579         -rm -f $(addprefix $(objpfx),$(tests) $(tests-internal) $(xtests) \
1580                                      $(test-srcs) \
1581                                      $(others) $(sysdep-others) stubs \
1582                                      $(addsuffix .o,$(tests) \
1583                                                     $(tests-internal) \
1584                                                     $(xtests) \
1585                                                     $(test-srcs) \
1586                                                     $(others) \
1587                                                     $(sysdep-others)) \
1588                                      $(addsuffix .out,$(tests) \
1589                                                       $(tests-internal) \
1590                                                       $(xtests) \
1591                                                       $(test-srcs)) \
1592                                      $(addsuffix .test-result,$(tests) \
1593                                                               $(tests-internal) \
1594                                                               $(xtests) \
1595                                                               $(test-srcs)))
1596         -rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
1597                                      $(install-lib) $(install-lib.so) \
1598                                      $(install-lib.so:%.so=%_pic.a))
1599         -rm -f core
1600         -rm -f $(objpfx)rtld-*.os
1601         $(rmobjs)
1602 define rmobjs
1603 $(foreach o,$(object-suffixes-for-libc),
1604 -rm -f $(objpfx)stamp$o $(o-objects))
1605 endef
1606
1607 # Also remove the dependencies and generated source files.
1608 common-clean: common-mostlyclean
1609         -rm -f $(addprefix $(objpfx),$(generated))
1610         -rm -f $(objpfx)*.d $(objpfx)*.dt
1611         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1612         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1613         -rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
1614 \f
1615 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1616 # for each function which is a stub.
1617
1618 ifdef objpfx
1619 .PHONY: stubs # The parent Makefile calls this target.
1620 stubs: $(objpfx)stubs
1621 endif
1622 objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1623                   $(addprefix $(objpfx),$(extra-objs))
1624 $(objpfx)stubs: $(objs-for-stubs)
1625 ifneq (,$(strip $(objs-for-stubs)))
1626         (cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1627         $(AWK) '/\.gnu\.glibc-stub\./ { \
1628                   sub(/\.gnu\.glibc-stub\./, "", $$2); \
1629                   stubs[$$2] = 1; } \
1630                 END { for (s in stubs) print "#define __stub_" s }' > $@T
1631         mv -f $@T $@
1632 else
1633         > $@
1634 endif
1635 \f
1636 ifneq (,$(strip $(gpl2lgpl)))
1637 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1638 # Snarf from the master source and frob the copying notice.
1639 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1640         sed -f $^ > $@-tmp
1641 # So I don't edit them by mistake.
1642         chmod a-w $@-tmp
1643         mv -f $@-tmp $@
1644 endif
1645 endif
1646
1647 # Local Variables:
1648 # mode: makefile
1649 # End: