Makerules

   1 # Copyright (C) 1991-2018 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 # Define GEN_AS_CONST_HEADERS to avoid circular dependency [BZ #22792].
 280 # NB: <tcb-offsets.h> is generated from tcb-offsets.sym to define
 281 # offsets and sizes of types in <tls.h> and maybe <pthread.h> which
 282 # may include <tcb-offsets.h>.  Target header files can check if
 283 # GEN_AS_CONST_HEADERS is defined to avoid circular dependency which
 284 # may lead to build hang on a many-core machine.
 285 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
 286                                            %.sym $(common-before-compile)
 287         $(AWK) -f $< $(filter %.sym,$^) \
 288         | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) \
 289                 -DGEN_AS_CONST_HEADERS -x c - \
 290                 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
 291         sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
 292                 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
 293         rm -f $(@:.h.d=.h)T3
 294         sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
 295             $(@:.h=.h.d)T > $(@:.h=.h.d)T2
 296         rm -f $(@:.h=.h.d)T
 297         mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
 298         mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
 299 vpath %.sym $(sysdirs)
 300 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 301
 302 tests-internal += $(gen-as-const-headers:%.sym=test-as-const-%)
 303 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
 304 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
 305                             %.sym $(common-objpfx)%.h
 306         ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
 307          $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
 308          echo '#include "$(..)test-skeleton.c"') > $@T
 309         mv -f $@T $@
 310 endif
 311 \f
 312 ifeq (yes,$(build-shared))
 313 # Generate the header containing the names of all shared libraries.
 314 # We use a stamp file to avoid unnecessary recompilations.
 315 before-compile += $(common-objpfx)gnu/lib-names.h
 316 ifeq ($(soversions.mk-done),t)
 317 ifndef abi-variants
 318 lib-names-h-abi = gnu/lib-names.h
 319 lib-names-stmp-abi = gnu/lib-names.stmp
 320 else
 321 lib-names-h-abi = gnu/lib-names-$(default-abi).h
 322 lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp
 323 before-compile += $(common-objpfx)$(lib-names-h-abi)
 324 common-generated += gnu/lib-names.h
 325 install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi)
 326 $(common-objpfx)gnu/lib-names.h:
 327         $(make-target-directory)
 328         { \
 329          echo '/* This file is automatically generated.';\
 330          echo '   It defines macros to allow user program to find the shared'; \
 331          echo '   library files which come as part of GNU libc.  */'; \
 332          echo '#ifndef __GNU_LIB_NAMES_H'; \
 333          echo '#define __GNU_LIB_NAMES_H        1'; \
 334          echo ''; \
 335          $(if $(abi-includes), \
 336           $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 337           echo '';) \
 338          $(foreach v,$(abi-variants),\
 339          $(if $(abi-$(v)-condition),\
 340          echo '#if $(abi-$(v)-condition)'; \
 341          echo '# include <gnu/lib-names-$(v).h>'); \
 342          $(if $(abi-$(v)-condition),echo '#endif';)) \
 343          echo ''; \
 344          echo '#endif   /* gnu/lib-names.h */'; \
 345         } >  $@
 346 endif
 347 $(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @:
 348 $(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \
 349                                        $(common-objpfx)soversions.i
 350         $(make-target-directory)
 351         { \
 352          $(if $(abi-variants), \
 353          echo '/* This file is automatically generated.  */';\
 354          echo '#ifndef __GNU_LIB_NAMES_H'; \
 355          echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \
 356          echo '#endif';, \
 357          echo '/* This file is automatically generated.';\
 358          echo '   It defines macros to allow user program to find the shared'; \
 359          echo '   library files which come as part of GNU libc.  */'; \
 360          echo '#ifndef __GNU_LIB_NAMES_H'; \
 361          echo '#define __GNU_LIB_NAMES_H        1';) \
 362          echo ''; \
 363          ($(foreach s,$(all-sonames), echo $(s);)) \
 364          | LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \
 365          $(if $(abi-variants),, \
 366          echo ''; \
 367          echo '#endif   /* gnu/lib-names.h */';) \
 368         } >  ${@:stmp=T}
 369         $(move-if-change) ${@:stmp=T} ${@:stmp=h}
 370         touch $@
 371 endif
 372 common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi)
 373 endif
 374 \f
 375 ###############################################################################
 376 # NOTE!  Everything adding to before-compile needs to come before this point! #
 377 ###############################################################################
 378
 379 # Generate an ordered list of implicit rules which find the source files in
 380 # each sysdep directory.  The old method was to use vpath to search all the
 381 # sysdep directories.  However, that had the problem that a .S file in a
 382 # later directory would be chosen over a .c file in an earlier directory,
 383 # which does not preserve the desired sysdeps ordering behavior.
 384
 385 # System-dependent makefiles can put in `inhibit-sysdep-asm' regexps
 386 # matching sysdep directories whose assembly source files should be
 387 # suppressed.
 388
 389 -include $(common-objpfx)sysd-rules
 390 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 391 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 392 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 393 sysd-rules-force = FORCE
 394 FORCE:
 395 endif
 396 $(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
 397                             $(common-objpfx)config.make $(..)Makerules \
 398                             $(sysdep-makefiles) $(sysdep-makeconfigs) \
 399                             $(sysd-rules-force)
 400         -@rm -f $@T
 401         LC_ALL=C $(AWK) -f $< > $@T \
 402                         -v all_object_suffixes='$(all-object-suffixes)' \
 403                         -v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
 404                         -v sysd_rules_patterns='$(sysd-rules-patterns)' \
 405                         -v config_sysdirs='$(config-sysdirs)'
 406         mv -f $@T $@
 407
 408 ifndef sysd-rules-done
 409 # Don't do deps until this exists, because it provides rules to make the deps.
 410 no_deps=t
 411 endif
 412
 413 define o-iterator-doit
 414 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 415 endef
 416 object-suffixes-left := $(all-object-suffixes)
 417 include $(o-iterator)
 418
 419 define o-iterator-doit
 420 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 421 endef
 422 object-suffixes-left := $(all-object-suffixes)
 423 include $(o-iterator)
 424
 425 define o-iterator-doit
 426 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
 427 endef
 428 object-suffixes-left := $(all-object-suffixes)
 429 include $(o-iterator)
 430
 431 # Omit the objpfx rules when building in the source tree, because
 432 # objpfx is empty and so these rules just override the ones above.
 433 ifdef objpfx
 434 # Define first rules to find the source files in $(objpfx).
 435 # Generated source files will end up there.
 436 define o-iterator-doit
 437 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 438 endef
 439 object-suffixes-left := $(all-object-suffixes)
 440 include $(o-iterator)
 441
 442 define o-iterator-doit
 443 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 444 endef
 445 object-suffixes-left := $(all-object-suffixes)
 446 include $(o-iterator)
 447 endif
 448
 449 # Generate version maps, but wait until sysdep-subdirs is known
 450 ifeq ($(sysd-sorted-done),t)
 451 ifeq ($(build-shared),yes)
 452 -include $(common-objpfx)sysd-versions
 453 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 454 common-generated += $(version-maps)
 455 postclean-generated += sysd-versions Versions.all abi-versions.h \
 456                        Versions.def Versions.v.i Versions.v
 457
 458 ifndef avoid-generated
 459 ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
 460 sysd-versions-force = FORCE
 461 FORCE:
 462 endif
 463
 464 $(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \
 465                               $(common-objpfx)Versions.v
 466         LC_ALL=C $(AWK) -f $^ > $@T
 467         mv -f $@T $@
 468
 469 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 470                               $(common-objpfx)soversions.i \
 471                               $(common-objpfx)Versions.def
 472         { while read which lib version setname; do \
 473             test x"$$which" = xDEFAULT || continue; \
 474             test -z "$$setname" || echo "$$lib : $$setname"; \
 475           done < $(word 2,$^); \
 476           cat $(word 3,$^); \
 477         } | LC_ALL=C $(AWK) -f $< > $@T
 478         mv -f $@T $@
 479 # See %.v/%.v.i implicit rules in Makeconfig.
 480 $(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
 481                               $(wildcard $(sysdirs:%=%/Versions)) \
 482                               $(sysd-versions-force)
 483 $(common-objpfx)sysd-versions: $(common-objpfx)versions.stmp
 484 $(common-objpfx)versions.stmp: $(common-objpfx)Versions.all \
 485                                $(common-objpfx)Versions.v \
 486                                $(..)scripts/versions.awk
 487         ( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
 488           cat $(word 2,$^) \
 489           | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 490                             -v move_if_change='$(move-if-change)' \
 491                             -f $(word 3,$^); \
 492         ) > $(common-objpfx)sysd-versionsT
 493         mv -f $(common-objpfx)sysd-versionsT $(common-objpfx)sysd-versions
 494         touch $@
 495 endif # avoid-generated
 496 endif # $(build-shared) = yes
 497 endif # sysd-sorted-done
 498
 499 # Generate .dT files as we compile.
 500 compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
 501 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 502 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 503 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 504
 505 # Like compile-mkdep-flags, but for use with $(BUILD_CC).  We don't want to
 506 # track system includes here, they may spuriously trigger an install rule,
 507 # and would cause the check-local-headers test to fail.
 508 native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@
 509
 510 # GCC can grok options after the file name, and it looks nicer that way.
 511 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 512 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
 513 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
 514                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 515 COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
 516 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
 517                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 518
 519 # We need this for the output to go in the right place.  It will default to
 520 # empty if make was configured to work with a cc that can't grok -c and -o
 521 # together.  You can't compile the C library with such a compiler.
 522 OUTPUT_OPTION = -o $@
 523
 524 # This is the end of the pipeline for compiling generated C code.
 525 compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)
 526
 527 # We need the $(CFLAGS) to be in there to have the right predefines during
 528 # the dependency run for C sources.  But having it for assembly sources can
 529 # get the wrong predefines.
 530 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
 531
 532 define +make-deps
 533 $(make-target-directory)
 534 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
 535              $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
 536 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 537 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
 538 mv -f $(@:.d=.T) $@ $(generate-md5)
 539 endef
 540
 541 ifneq (,$(objpfx))
 542 # Continuation lines here are dangerous because they introduce spaces!
 543 define sed-remove-objpfx
 544 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 545 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 546 endef
 547 endif
 548 \f
 549 # Modify the list of routines we build for different targets
 550
 551 ifeq (yes,$(build-shared))
 552 ifndef libc.so-version
 553 # Undefine this because it can't work when we libc.so is unversioned.
 554 static-only-routines =
 555 endif
 556 endif
 557
 558 elide-routines.oS += $(filter-out $(static-only-routines),\
 559                                   $(routines) $(aux) $(sysdep_routines))
 560 elide-routines.os += $(static-only-routines)
 561
 562 # If we have versioned code we don't need the old versions in any of the
 563 # static libraries.
 564 elide-routines.o  += $(shared-only-routines)
 565 elide-routines.op += $(shared-only-routines)
 566 \f
 567 # Shared library building.
 568
 569 ifeq (yes,$(build-shared))
 570
 571 # Reference map file only when shared libraries are built and a map file name
 572 # is given.
 573 ifeq ($(build-shared),yes)
 574 map-file = $(firstword $($(@F:.so=-map)) \
 575                        $(addprefix $(common-objpfx), \
 576                                    $(filter $(@F:.so=.map),$(version-maps))))
 577 load-map-file = $(map-file:%=-Wl,--version-script=%)
 578 endif
 579
 580 # Compiler arguments to use to link a shared object with libc and
 581 # ld.so.  This is intended to be as similar as possible to a default
 582 # link with an installed libc.
 583 link-libc-args = -Wl,--start-group \
 584                  $(libc-for-link) \
 585                  $(common-objpfx)libc_nonshared.a \
 586                  $(as-needed) $(elf-objpfx)ld.so $(no-as-needed) \
 587                  -Wl,--end-group
 588
 589 # The corresponding shared libc to use.  This may be modified for a
 590 # particular target.
 591 libc-for-link = $(common-objpfx)libc.so
 592
 593 # The corresponding dependencies.  As these are used in dependencies,
 594 # not just commands, they cannot use target-specific variables so need
 595 # to name both possible libc.so objects.
 596 link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
 597                  $(common-objpfx)libc_nonshared.a $(elf-objpfx)ld.so
 598
 599 # Pattern rule to build a shared object from an archive of PIC objects.
 600 # This must come after the installation rules so Make doesn't try to
 601 # build shared libraries in place from the installed *_pic.a files.
 602 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 603 # on other shared objects.  The linking with libc and ld.so is intended
 604 # to be as similar as possible to a default link with an installed libc.
 605 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(link-libc-deps)
 606         $(build-shlib) $(link-libc-args)
 607         $(call after-link,$@)
 608
 609 define build-shlib-helper
 610 $(LINK.o) -shared -static-libgcc -Wl,-O1 $(sysdep-LDFLAGS) \
 611           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(rtld-LDFLAGS) \
 612           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 613           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 614           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 615           $(LDFLAGS.so) $(LDFLAGS-lib.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 616           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 617 endef
 618
 619 ifeq (yes,$(use-default-link))
 620 # If the linker is good enough, we can let it use its default linker script.
 621 shlib-lds =
 622 shlib-lds-flags =
 623 else
 624 # binutils only position loadable notes into the first page for binaries,
 625 # not for shared objects
 626 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
 627         $(LINK.o) -shared -Wl,-O1 \
 628                   -nostdlib -nostartfiles \
 629                   $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
 630                   -Wl,--verbose 2>&1 | \
 631           sed > $@T \
 632               -e '/^=========/,/^=========/!d;/^=========/d' \
 633               $(if $(filter yes,$(have-hash-style)), \
 634                    -e 's/^.*\.gnu\.hash[        ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 635                    -e '/^[      ]*\.hash[       ]*:.*$$/{h;d;}' \
 636                    -e '/DATA_SEGMENT_ALIGN/{H;g}' \
 637                 , \
 638                    -e 's/^.*\.hash[     ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 639                ) \
 640               -e 's/^.*\*(\.dynbss).*$$/& \
 641                  PROVIDE(__start___libc_freeres_ptrs = .); \
 642                  *(__libc_freeres_ptrs) \
 643                  PROVIDE(__stop___libc_freeres_ptrs = .);/'\
 644               -e 's@^.*\*(\.jcr).*$$@& \
 645                  PROVIDE(__start___libc_subfreeres = .);\
 646                  __libc_subfreeres : { *(__libc_subfreeres) }\
 647                  PROVIDE(__stop___libc_subfreeres = .);\
 648                  PROVIDE(__start___libc_atexit = .);\
 649                  __libc_atexit : { *(__libc_atexit) }\
 650                  PROVIDE(__stop___libc_atexit = .);\
 651                  PROVIDE(__start___libc_IO_vtables = .);\
 652                  __libc_IO_vtables : { *(__libc_IO_vtables) }\
 653                  PROVIDE(__stop___libc_IO_vtables = .);\
 654                  /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
 655         test -s $@T
 656         mv -f $@T $@
 657 common-generated += shlib.lds
 658
 659 shlib-lds = $(common-objpfx)shlib.lds
 660 shlib-lds-flags = -T $(shlib-lds)
 661 endif
 662
 663 define build-shlib
 664 $(build-shlib-helper) -o $@ $(shlib-lds-flags) \
 665           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 666 endef
 667
 668 define build-module-helper
 669 $(LINK.o) -shared -static-libgcc $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
 670           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
 671           -B$(csu-objpfx) $(load-map-file) \
 672           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 673           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 674 endef
 675
 676 # This macro is similar to build-shlib but it does not define a soname
 677 # and it does not depend on the destination name to start with `lib'.
 678 # binutils only position loadable notes into the first page for binaries,
 679 # not for shared objects
 680 define build-module
 681 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 682           $(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
 683 $(call after-link,$@)
 684 endef
 685 define build-module-asneeded
 686 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 687           $(csu-objpfx)abi-note.o \
 688           -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
 689           $(link-libc-args)
 690 $(call after-link,$@)
 691 endef
 692
 693 # sofini.os must be placed last since it terminates .eh_frame section.
 694 build-module-helper-objlist = \
 695         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 696                    $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
 697                                 $(elf-objpfx)sofini.os \
 698                                 $(link-libc-deps),$^))
 699
 700 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 701 build-shlib-objlist = $(build-module-helper-objlist) \
 702                       $(LDLIBS-$(@F:lib%.so=%).so) \
 703                       $(filter $(elf-objpfx)sofini.os,$^)
 704
 705 # Don't try to use -lc when making libc.so itself.
 706 # Also omits crti.o and crtn.o, which we do not want
 707 # since we define our own `.init' section specially.
 708 LDFLAGS-c.so = -nostdlib -nostartfiles
 709 # But we still want to link libc.so against $(libc.so-gnulib).
 710 LDLIBS-c.so += $(libc.so-gnulib)
 711 # Give libc.so an entry point and make it directly runnable itself.
 712 LDFLAGS-c.so += -e __libc_main
 713 # Pre-link the objects of libc_pic.a so that we can locally resolve
 714 # COMMON symbols before we link against ld.so.  This is because ld.so
 715 # contains some of libc_pic.a already, which will prevent the COMMONs
 716 # from being allocated in libc.so, which introduces evil dependencies
 717 # between libc.so and ld.so, which can make it impossible to upgrade.
 718 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 719         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 720         $(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
 721
 722 ifeq (,$(strip $(shlib-lds-flags)))
 723 # Generate a list of -R options to excise .gnu.glibc-stub.* sections.
 724 $(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
 725         $(OBJDUMP) -h $< | \
 726         $(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
 727                 > $@T
 728         mv -f $@T $@
 729 # Apply those -R options.
 730 $(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
 731                                    $(common-objpfx)libc_pic.os
 732         $(OBJCOPY) @$^ $@
 733 generated += libc_pic.opts libc_pic.os.clean
 734
 735 libc_pic_clean := .clean
 736 endif
 737
 738 # Build a possibly-modified version of libc_pic.a for use in building
 739 # linkobj/libc.so.
 740 ifeq (,$(filter sunrpc,$(subdirs)))
 741 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a
 742         $(make-target-directory)
 743         ln -f $< $@
 744 else
 745 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a \
 746                                     $(common-objpfx)sunrpc/librpc_compat_pic.a
 747         $(make-target-directory)
 748         (cd $(common-objpfx)linkobj; \
 749          $(AR) x ../libc_pic.a; \
 750          rm $$($(AR) t ../sunrpc/librpc_compat_pic.a | sed 's/^compat-//'); \
 751          $(AR) x ../sunrpc/librpc_compat_pic.a; \
 752          $(AR) cr libc_pic.a *.os; \
 753          rm *.os)
 754 endif # $(subdirs) contains sunrpc
 755
 756 # Clear link-libc-deps for the libc.so libraries so build-shlibs does not
 757 # filter ld.so out of the list of linked objects.
 758 $(common-objpfx)libc.so: link-libc-deps = # empty
 759 $(common-objpfx)linkobj/libc.so: link-libc-deps = # empty
 760
 761 # Use our own special initializer and finalizer files for the libc.so
 762 # libraries.
 763 $(common-objpfx)libc.so: $(elf-objpfx)soinit.os \
 764                          $(common-objpfx)libc_pic.os$(libc_pic_clean) \
 765                          $(elf-objpfx)sofini.os \
 766                          $(elf-objpfx)interp.os \
 767                          $(elf-objpfx)ld.so \
 768                          $(shlib-lds)
 769         $(build-shlib)
 770         $(call after-link,$@)
 771
 772 $(common-objpfx)linkobj/libc.so: $(elf-objpfx)soinit.os \
 773                          $(common-objpfx)linkobj/libc_pic.a \
 774                          $(elf-objpfx)sofini.os \
 775                          $(elf-objpfx)interp.os \
 776                          $(elf-objpfx)ld.so \
 777                          $(shlib-lds)
 778         $(build-shlib)
 779         $(call after-link,$@)
 780
 781 ifeq ($(build-shared),yes)
 782 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 783 endif
 784 common-generated += libc.so libc_pic.os
 785 ifdef libc.so-version
 786 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 787         $(make-link)
 788 common-generated += libc.so$(libc.so-version)
 789 endif
 790 endif
 791 \f
 792 # Figure out the source filenames in this directory.
 793
 794 override sources := $(addsuffix .c,\
 795                         $(filter-out $(elided-routines),\
 796                             $(routines) $(aux) \
 797                             $(sysdep_routines)))
 798 sysdep_routines := $(sysdep_routines)
 799
 800 headers := $(headers) $(sysdep_headers)
 801
 802 # This is the list of all object files, gotten by
 803 # replacing every ".c" in `sources' with a ".o".
 804 override objects := $(addprefix $(objpfx),$(sources:.c=.o))
 805
 806
 807 # The makefile may define $(extra-libs) with `libfoo libbar'
 808 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 809 ifdef extra-libs
 810 # extra-lib.mk is included once for each extra lib to define rules
 811 # to build it, and to add its objects to the various variables.
 812 # During its evaluation, $(lib) is set to the name of the library.
 813 extra-libs-left := $(extra-libs)
 814 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 815 endif
 816
 817
 818 # The makefile may define $(modules-names) to build additional modules.
 819 # These are built with $(build-module), except any in $(modules-names-nobuild).
 820 # MODULE_NAME=extramodules, except any in $(modules-names-tests).
 821 ifdef modules-names
 822 cpp-srcs-left := $(filter-out $(modules-names-tests),$(modules-names))
 823 ifneq (,$(cpp-srcs-left))
 824 lib := extramodules
 825 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
 826 endif
 827
 828 ifdef modules-names-tests
 829 cpp-srcs-left := $(filter $(modules-names-tests),$(modules-names))
 830 ifneq (,$(cpp-srcs-left))
 831 lib := testsuite
 832 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
 833 endif
 834 endif
 835
 836 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
 837 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
 838                 $(objpfx)%.os $(shlib-lds) $(link-libs-deps)
 839         $(build-module)
 840 endif
 841 \f
 842 +depfiles := $(sources:.c=.d) \
 843              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 844              $(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
 845              $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
 846              $(addsuffix .d,$(tests) $(tests-internal) $(xtests) $(test-srcs))
 847 ifeq ($(build-programs),yes)
 848 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 849 endif
 850 +depfiles := $(addprefix $(objpfx),\
 851                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 852                                       $(+depfiles)))
 853 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
 854 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
 855              $(wildcard $(all-dt-files:.dt=.d))
 856
 857 # This is a funny rule in that it removes its input file.
 858 %.d: %.dt
 859         @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
 860          mv -f $(@:.d=.T) $@ && \
 861          rm -f $<
 862
 863 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
 864 # They will be generated when they're needed, and trying too early won't work.
 865 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 866 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
 867                                                 $(+gen-as-const)))
 868
 869 ifdef +depfiles
 870 ifneq ($(no_deps),t)
 871 -include $(+depfiles)
 872 endif
 873 endif
 874 \f\f
 875 # Maximize efficiency by minimizing the number of rules.
 876 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 877 # Don't define any builtin rules.
 878 MAKEFLAGS := $(MAKEFLAGS)r
 879
 880 # Generic rule for making directories.
 881 %/:
 882 # mkdir isn't smart enough to strip a trailing /.
 883 # We always require a mkdir which supports the -p option to avoid error
 884 # messages in case of races.
 885         mkdir -p $(@:%/=%)
 886 \f
 887 # Make sure that object files are not removed
 888 # when they are intermediates between sources and library members.
 889 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 890
 891 # Make sure that the parent library archive is never removed.
 892 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 893 \f
 894 # Use the verbose option of ar and tar when not running silently.
 895 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 896 verbose := v
 897 else                                            # -s
 898 verbose :=
 899 endif                                           # not -s
 900
 901 ARFLAGS := r$(verbose)
 902 CREATE_ARFLAGS := cru$(verbose)
 903 \f
 904 # This makes all the object files in the parent library archive.
 905
 906 .PHONY: lib lib-noranlib
 907 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 908 lib-noranlib: libobjs
 909
 910 # For object-suffix $o, the list of objects with that suffix.
 911 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 912 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 913                                                        $(elide-routines$o)),\
 914                                             $(objects))) \
 915             $(addprefix $(objpfx),$(o-objects$o))
 916
 917 others: $(addprefix $(objpfx),$(install-lib))
 918
 919 ifndef objects
 920
 921 # Create the stamp$o files to keep the parent makefile happy.
 922 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 923 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 924         $(make-target-directory)
 925         rm -f $@; > $@
 926 else
 927
 928 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 929 # timestamp file; these rules (one explicit rule is generated for each
 930 # object suffix) write a list of objects to update in the stamp file.
 931 # The parent will then actually add them all to the archive in the
 932 # archive rule, below.
 933 define o-iterator-doit
 934 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 935 endef
 936 define do-stamp
 937 $(make-target-directory)
 938 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 939 mv -f $@T $@
 940 endef
 941 object-suffixes-left := $(object-suffixes-for-libc)
 942 include $(o-iterator)
 943
 944 endif
 945
 946 # Now define explicit rules to build the library archives; these depend
 947 # on the stamp files built above.
 948 define o-iterator-doit
 949 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 950                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 951 endef
 952 define do-makelib
 953 cd $(common-objdir) && \
 954 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 955 endef
 956 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 957 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 958 ifndef subdir
 959 $(subdirs-stamps): subdir_lib;
 960 endif
 961 object-suffixes-left = $(object-suffixes-for-libc)
 962 include $(o-iterator)
 963
 964
 965 # This makes all the object files.
 966 .PHONY: objects objs libobjs extra-objs
 967 objects objs: libobjs extra-objs
 968 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 969 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 970
 971 # Canned sequence for building an extra library archive.
 972 define build-extra-lib
 973 $(patsubst %/,cd % &&,$(objpfx)) \
 974 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 975       $(patsubst $(objpfx)%,%,$^)
 976 endef
 977 \f
 978 # Installation.
 979
 980 .PHONY: force-install
 981 force-install:
 982
 983 # $(install-lib) are installed from the object directory into $(libdir);
 984 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 985 # unless they also appear in $(non-lib.a).  $(install-data) are installed as
 986 # they are into $(datadir).  $(headers) are installed as they are in
 987 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 988 # are installed from the object directory into $(bindir), $(bindir) and
 989 # $(sbindir), respectively.  $(install-others) and $(install-others-programs)
 990 # are absolute path names of files to install; rules to install them are
 991 # defined elsewhere.
 992
 993 # The simple library name to install libc.a under.
 994 # This could be defined by a sysdep Makefile.
 995 ifndef libc-name
 996 libc-name := c
 997 endif
 998
 999 define do-install
1000 $(make-target-directory)
1001 $(INSTALL_DATA) $< $@
1002 endef
1003
1004 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
1005 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
1006 define make-target-directory
1007 $(addprefix $(..)./scripts/mkinstalldirs ,\
1008             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
1009 endef
1010
1011 # Any directory (parent or subdir) should install libc.a; this way
1012 # "make install" in a subdir is guaranteed to install everything it changes.
1013 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
1014                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
1015                                                      $(libprefix)$(libc-name)))
1016
1017 .PHONY: check-install-supported
1018 check-install-supported:
1019
1020 # Check to see if the prefix or exec_prefix GNU standard variable
1021 # has been overridden on the command line and, if so, fail with
1022 # an error message since doing so is not supported (set DESTDIR
1023 # instead).
1024 ifeq ($(origin prefix),command line)
1025 check-install-supported:
1026         $(error Overriding prefix is not supported. Set DESTDIR instead.)
1027 endif
1028
1029 ifeq ($(origin exec_prefix),command line)
1030 check-install-supported:
1031         $(error Overriding exec_prefix is not supported. Set DESTDIR instead.)
1032 endif
1033
1034 install: check-install-supported
1035
1036 install: $(installed-libcs)
1037 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
1038         $(make-target-directory)
1039         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
1040
1041 define do-install-program
1042 $(make-target-directory)
1043 $(INSTALL_PROGRAM) $< $@.new
1044 mv -f $@.new $@
1045 endef
1046
1047 define do-install-script
1048 $(make-target-directory)
1049 $(INSTALL_SCRIPT) $< $@.new
1050 mv -f $@.new $@
1051 endef
1052
1053 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
1054 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
1055
1056 ifeq (yes,$(build-shared))
1057 # Find which .so's have versions.
1058 versioned := $(strip $(foreach so,$(install-lib.so),\
1059                                $(patsubst %,$(so),$($(so)-version))))
1060
1061 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
1062 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
1063
1064 # For versioned libraries, we install three files:
1065 #       $(inst_libdir)/libfoo.so        -- for linking, symlink or ld script
1066 #       $(inst_slibdir)/libfoo.so.NN    -- for loading by SONAME, symlink
1067 #       $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
1068 lib-version := $(firstword $($(subdir)-version) $(version))
1069 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
1070                       $(foreach L,$(install-lib.so-versioned),\
1071                                 $(inst_libdir)/$L \
1072                                 $(inst_slibdir)/$(L:.so=)-$(lib-version).so \
1073                                 $(inst_slibdir)/$L$($L-version))
1074
1075 # Install all the unversioned shared libraries.
1076 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
1077     $(objpfx)%.so $(+force)
1078         $(do-install-program)
1079
1080 ifneq ($(findstring -s,$(LN_S)),)
1081 define make-link
1082 rm -f $@.new
1083 $(SHELL) $(..)scripts/rellns-sh $< $@.new
1084 mv -f $@.new $@
1085 endef
1086 define make-link-multidir
1087 $(patsubst %/,cd %,$(objpfx)); \
1088   $(addprefix $(abspath $(..)scripts/mkinstalldirs) ,$(dir $(multidir))); \
1089   $(LN_S) . $(multidir) 2> /dev/null; \
1090   test -L $(multidir)
1091 endef
1092 else
1093 # If we have no symbolic links don't bother with rellns-sh.
1094 define make-link
1095 rm -f $@.new
1096 $(LN_S) $< $@.new
1097 mv -f $@.new $@
1098 endef
1099 define make-link-multidir
1100 $(make-target-directory)
1101 ln -f $(objpfx)/$(@F) $@
1102 endef
1103 endif
1104
1105 ifeq (yes,$(build-shared))
1106 ifeq (no,$(cross-compiling))
1107 symbolic-link-prog := $(elf-objpfx)sln
1108 symbolic-link-list := $(elf-objpfx)symlink.list
1109 define make-shlib-link
1110 echo `$(..)scripts/rellns-sh -p $< $@` $@ >> $(symbolic-link-list)
1111 endef
1112 else # cross-compiling
1113 # We need a definition that can be used by elf/Makefile's install rules.
1114 symbolic-link-prog = $(LN_S)
1115 endif
1116 endif
1117 ifndef make-shlib-link
1118 define make-shlib-link
1119 rm -f $@
1120 $(LN_S) `$(..)scripts/rellns-sh -p $< $@` $@
1121 endef
1122 endif
1123
1124 ifdef libc.so-version
1125 # For a library specified to be version N, install three files:
1126 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
1127 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
1128
1129 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
1130                                            $(+force)
1131         $(make-shlib-link)
1132 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
1133         $(do-install-program)
1134 install: $(inst_slibdir)/libc.so$(libc.so-version)
1135
1136 # This fragment of linker script gives the OUTPUT_FORMAT statement
1137 # for the configuration we are building.  We put this statement into
1138 # the linker scripts we install for -lc et al so that they will not be
1139 # used by a link for a different format on a multi-architecture system.
1140 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
1141                             $(common-objpfx)config.make \
1142                             $(common-objpfx)config.h $(..)Makerules
1143 ifneq (unknown,$(output-format))
1144         echo > $@.new 'OUTPUT_FORMAT($(output-format))'
1145 else
1146         $(LINK.o) -shared $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
1147                   $(LDFLAGS.so) $(LDFLAGS-lib.so) \
1148                   -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
1149         | sed -n -f $< > $@.new
1150         test -s $@.new
1151         rm -f $@.so
1152 endif
1153         mv -f $@.new $@
1154 common-generated += format.lds
1155
1156 ifndef subdir
1157 # What we install as libc.so for programs to link against is in fact a
1158 # link script.  It contains references for the various libraries we need.
1159 # The libc.so object is not complete since some functions are only defined
1160 # in libc_nonshared.a.
1161 # We need to use absolute paths since otherwise local copies (if they exist)
1162 # of the files are taken by the linker.
1163 install: $(inst_libdir)/libc.so
1164 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
1165                         $(common-objpfx)libc.so$(libc.so-version) \
1166                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
1167                                                   $(libprefix)$(libc-name)) \
1168                         $(+force)
1169         (echo '/* GNU ld script';\
1170          echo '   Use the shared library, but some functions are only in';\
1171          echo '   the static library, so try that secondarily.  */';\
1172          cat $<; \
1173          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
1174               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1175               ' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
1176         ) > $@.new
1177         mv -f $@.new $@
1178
1179 endif
1180
1181 else
1182 install: $(inst_slibdir)/libc.so
1183 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1184         $(do-install-program)
1185 endif
1186
1187 ifneq (,$(versioned))
1188 # Produce three sets of rules as above for all the smaller versioned libraries.
1189
1190 define o-iterator-doit
1191 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1192 endef
1193 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1194 ifneq (,$(object-suffixes-left))
1195 include $(o-iterator)
1196 endif
1197
1198 # Make symlinks in the build directory, because the versioned names might
1199 # be referenced by a DT_NEEDED in another library.
1200 define o-iterator-doit
1201 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1202 endef
1203 object-suffixes-left := $(versioned)
1204 include $(o-iterator)
1205
1206 generated += $(foreach o,$(versioned),$o$($o-version))
1207
1208 ifeq (,$($(subdir)-version))
1209 define o-iterator-doit
1210 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1211                                  $(+force);
1212         $$(make-shlib-link)
1213 endef
1214 object-suffixes-left := $(versioned)
1215 include $(o-iterator)
1216
1217 define o-iterator-doit
1218 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1219         $$(do-install-program)
1220 endef
1221 object-suffixes-left := $(versioned)
1222 include $(o-iterator)
1223 else
1224 define o-iterator-doit
1225 $(inst_slibdir)/$o$($o-version): \
1226   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1227         $$(make-shlib-link)
1228 endef
1229 object-suffixes-left := $(versioned)
1230 include $(o-iterator)
1231
1232 define o-iterator-doit
1233 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1234         $$(do-install-program)
1235 endef
1236 object-suffixes-left := $(versioned)
1237 include $(o-iterator)
1238 endif
1239 endif
1240
1241 define do-install-so
1242 $(do-install-program)
1243 $(patsubst %,$(LN_S) -f $(@F) \
1244                         $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1245            $(filter-out %.so,$@))
1246 endef
1247
1248 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1249 $(foreach v,$(so-versions),\
1250           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1251                                                $(+force)
1252         $(do-install-so)
1253 $(foreach v,$(so-versions),\
1254           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1255         $(do-install-so)
1256 endif
1257
1258 ifdef install-bin
1259 $(addprefix $(inst_bindir)/,$(install-bin)): \
1260     $(inst_bindir)/%: $(objpfx)% $(+force)
1261         $(do-install-program)
1262 endif
1263 ifdef install-bin-script
1264 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1265     $(inst_bindir)/%: $(objpfx)% $(+force)
1266         $(do-install-script)
1267 endif
1268 ifdef install-rootsbin
1269 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1270    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1271         $(do-install-program)
1272 endif
1273 ifdef install-sbin
1274 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1275     $(inst_sbindir)/%: $(objpfx)% $(+force)
1276         $(do-install-program)
1277 endif
1278 ifdef install-lib
1279 install-lib.a := $(filter lib%.a,$(install-lib))
1280 install-lib.a := $(filter-out $(install-lib-ldscripts),$(install-lib.a))
1281 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1282 ifdef install-lib-non.a
1283 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1284   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1285         $(do-install)
1286 endif
1287 ifdef install-lib.a
1288 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1289   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1290         $(do-install)
1291 endif
1292 endif
1293 ifdef install-data
1294 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1295         $(do-install)
1296 endif
1297 headers := $(strip $(headers))
1298 ifdef headers
1299 # This implicit rule installs headers from the source directory.
1300 # It may be ignored in preference to rules from sysd-rules to find
1301 # headers in the sysdeps tree.
1302 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1303         $(do-install)
1304 $(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
1305         $(do-install)
1306 $(inst_includedir)/%.h: %.h $(+force)
1307         $(do-install)
1308 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1309         $(do-install)
1310 headers-nonh := $(filter-out %.h,$(headers))
1311 ifdef headers-nonh
1312 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1313                                                  % $(+force)
1314         $(do-install)
1315 endif   # headers-nonh
1316 endif   # headers
1317
1318 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1319         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1320         install-data-nosubdir install-headers-nosubdir
1321 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1322 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1323 install-rootsbin-nosubdir: \
1324         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1325 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1326 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1327                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1328                        $(addprefix $(libprefix),$(install-lib-non.a)))
1329 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1330 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1331 install-others-nosubdir: $(install-others)
1332 install-others-programs-nosubdir: $(install-others-programs)
1333
1334 # We need all the `-nosubdir' targets so that `install' in the parent
1335 # doesn't depend on several things which each iterate over the subdirs.
1336 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1337 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1338 install-%:: install-%-nosubdir ;
1339
1340 .PHONY: install install-no-libc.a-nosubdir
1341 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1342                             install-lib-nosubdir install-others-nosubdir
1343 ifeq ($(build-programs),yes)
1344 install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1345                             install-rootsbin-nosubdir install-sbin-nosubdir \
1346                             install-others-programs-nosubdir
1347 endif
1348 install: install-no-libc.a-nosubdir
1349 \f
1350 # Command to compile $< using the native libraries.
1351 define native-compile
1352 $(make-target-directory)
1353 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1354             $< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
1355 endef
1356
1357 # We always want to use configuration definitions.
1358 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
1359                    -DIS_IN_build -include $(common-objpfx)config.h
1360
1361 # Support the GNU standard name for this target.
1362 .PHONY: check
1363 check: tests
1364 # Special target to run tests which cannot be run unconditionally.
1365 # Maintainers should use this target.
1366 .PHONY: xcheck
1367 xcheck: xtests
1368
1369 # The only difference between MODULE_NAME=testsuite and MODULE_NAME=nonlib is
1370 # that almost all internal declarations from config.h, libc-symbols.h, and
1371 # include/*.h are not available to 'testsuite' code, but are to 'nonlib' code.
1372 all-testsuite := $(strip $(tests) $(xtests) $(test-srcs) $(test-extras))
1373 ifneq (,$(all-testsuite))
1374 cpp-srcs-left = $(all-testsuite)
1375 lib := testsuite
1376 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
1377 endif
1378
1379 all-nonlib := $(strip $(tests-internal) $(test-internal-extras) \
1380                       $(others) $(others-extras))
1381 ifneq (,$(all-nonlib))
1382 cpp-srcs-left = $(all-nonlib)
1383 lib := nonlib
1384 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
1385 endif
1386
1387
1388 ifeq ($(build-shared),yes)
1389 # Generate normalized lists of symbols, versions, and data sizes.
1390 # This is handy for checking against existing library binaries.
1391
1392 %.symlist: $(..)scripts/abilist.awk %.dynsym
1393         LC_ALL=C $(AWK) -f $^ > $@T
1394         mv -f $@T $@
1395
1396 %.dynsym: %.so
1397         LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
1398         mv -f $@T $@
1399
1400 # A sysdeps/.../Makefile can set abilist-pattern to something like
1401 # %-foo.abilist to look for libc-foo.abilist instead of libc.abilist.
1402 # This makes sense if multiple ABIs can be most cleanly supported by a
1403 # configuration without using separate sysdeps directories for each.
1404 ifdef abilist-pattern
1405 vpath $(abilist-pattern) $(+sysdep_dirs)
1406 endif
1407
1408 vpath %.abilist $(+sysdep_dirs)
1409
1410 # The .PRECIOUS rule prevents the files built by an implicit rule whose
1411 # target pattern is %.symlist from being considered "intermediate files"
1412 # and automatically removed.  We only want these files to be removed by
1413 # 'make clean', which is handled by the 'generated' variable.
1414 .PRECIOUS: %.symlist
1415 generated += $(extra-libs:=.symlist)
1416
1417 ifdef abilist-pattern
1418 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1419                           $(objpfx)%.symlist
1420         $(check-abi-pattern); \
1421         $(evaluate-test)
1422 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1423                           $(common-objpfx)%.symlist
1424         $(check-abi-pattern); \
1425         $(evaluate-test)
1426 endif
1427 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1428                           $(objpfx)%.symlist
1429         $(check-abi); \
1430         $(evaluate-test)
1431 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1432                           $(common-objpfx)%.symlist
1433         $(check-abi); \
1434         $(evaluate-test)
1435 define check-abi-pattern
1436         diff -p -U 0 $(filter $(abilist-pattern),$^) $(filter %.symlist,$^) \
1437              > $@
1438 endef
1439 define check-abi
1440         diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^) > $@
1441 endef
1442
1443 ifdef abilist-pattern
1444 update-abi-%: $(objpfx)%.symlist $(abilist-pattern)
1445         $(update-abi-pattern)
1446 update-abi-%: $(common-objpfx)%.symlist $(abilist-pattern)
1447         $(update-abi-pattern)
1448 endif
1449 update-abi-%: $(objpfx)%.symlist %.abilist
1450         $(update-abi)
1451 update-abi-%: $(common-objpfx)%.symlist %.abilist
1452         $(update-abi)
1453 define update-abi-pattern
1454 @if cmp -s $^ 2> /dev/null; \
1455  then \
1456       echo '+++ $(filter $(abilist-pattern),$^) is unchanged'; \
1457  else cp -f $^; \
1458       echo '*** Now check $(filter $(abilist-pattern),$^) changes for correctness ***'; \
1459  fi
1460 endef
1461 define update-abi
1462 @if cmp -s $^ 2> /dev/null; \
1463  then \
1464       echo '+++ $(filter %.abilist,$^) is unchanged'; \
1465  else cp -f $^; \
1466       echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
1467  fi
1468 endef
1469
1470 # Patch all .abilist files for one DSO.  The find command locates
1471 # abilist files for all architectures.  The regular expression in the
1472 # find invocation is needed to separate libc.abilist and
1473 # libcrypt.abilist, for example.  It assumes that abilist-pattern, if
1474 # set, is of the form "%-SUFFIX", and not "%SUFFIX", that is, there is
1475 # a non-alphanumeric seperator between the pattern and the suffix
1476 # added.  The abilist files in /generic/ are filtered out because
1477 # these are expected to remain empty.
1478 define update-all-abi
1479 $(SHELL) $(..)scripts/update-abilist.sh $^ \
1480   $$(find $(..)sysdeps \
1481     -regextype posix-egrep -regex '.*/$*([^a-z0-9].*)?\.abilist$$' \
1482     \! -regex '.*/generic/.*')
1483 endef
1484 ifdef abilist-pattern
1485 update-all-abi-%: $(abilist-pattern) $(objpfx)%.symlist
1486         $(update-all-abi)
1487 update-all-abi-%: $(abilist-pattern) $(common-objpfx)%.symlist
1488         $(update-all-abi)
1489 endif
1490 update-all-abi-%: %.abilist $(objpfx)%.symlist
1491         $(update-all-abi)
1492 update-all-abi-%: %.abilist $(common-objpfx)%.symlist
1493         $(update-all-abi)
1494
1495 .PHONY: update-abi update-all-abi check-abi
1496 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1497 update-all-abi: $(patsubst %.so,update-all-abi-%,$(install-lib.so-versioned))
1498 check-abi-list = $(patsubst %.so,$(objpfx)check-abi-%.out, \
1499                                  $(install-lib.so-versioned))
1500 check-abi: $(check-abi-list)
1501 ifdef subdir
1502 subdir_check-abi: check-abi
1503 subdir_update-abi: update-abi
1504 subdir_update-all-abi: update-all-abi
1505 else
1506 check-abi: subdir_check-abi
1507         if grep -q '^FAIL:' $(objpfx)*/check-abi*.test-result; then \
1508                 cat $(objpfx)*/check-abi*.out && exit 1; fi
1509 update-abi: subdir_update-abi
1510 update-all-abi: subdir_update-all-abi
1511 endif
1512
1513 ifeq ($(subdir),elf)
1514 check-abi: $(objpfx)check-abi-libc.out
1515 tests-special += $(objpfx)check-abi-libc.out
1516 update-abi: update-abi-libc
1517 update-all-abi: update-all-abi-libc
1518 common-generated += libc.symlist
1519 endif
1520
1521 ifeq ($(build-shared),yes)
1522 ifdef subdir
1523 tests-special += $(check-abi-list)
1524 endif
1525 endif
1526
1527 endif
1528 \f
1529 # These will have been set by sysdeps/posix/Makefile.
1530 L_tmpnam  ?= 1
1531 TMP_MAX   ?= 0
1532 L_ctermid ?= 1
1533 L_cuserid ?= 1
1534
1535 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1536
1537 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1538 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1539                    $(common-objpfx)config.make
1540         $(make-target-directory)
1541         { echo '#include "$(..)posix/bits/posix1_lim.h"';               \
1542         } |                                                             \
1543         $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)'   \
1544               $(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
1545         sed $(sed-remove-objpfx) $(sed-remove-dotdot)                   \
1546             $(@:st=dT) > $(@:st=dt)
1547         mv -f $(@:st=dt) $(@:st=d)
1548         fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`;       \
1549         filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`;    \
1550         fopen_max=$${fopen_max:-16};                                    \
1551         filename_max=$${filename_max:-1024};                            \
1552         sed -e "s/@FOPEN_MAX@/$$fopen_max/"                             \
1553             -e "s/@FILENAME_MAX@/$$filename_max/"                       \
1554             -e "s/@L_tmpnam@/$(L_tmpnam)/"                              \
1555             -e "s/@TMP_MAX@/$(TMP_MAX)/"                                \
1556             -e "s/@L_ctermid@/$(L_ctermid)/"                            \
1557             -e "s/@L_cuserid@/$(L_cuserid)/"                            \
1558             $< > $(@:st=h.new)
1559         $(move-if-change) $(@:st=h.new) $(@:st=h)
1560 # Remove these last so that they can be examined if something went wrong.
1561         rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1562         touch $@
1563 # Get dependencies.
1564 ifndef no_deps
1565 -include $(stdio_lim:h=d)
1566 endif
1567 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1568 \f
1569 FORCE:
1570
1571 .PHONY: echo-headers
1572 echo-headers:
1573         @echo $(headers)
1574
1575 %.bz2: %; bzip2 -9vk $<
1576 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1577 %.xz: %; xz -9evk $<
1578 \f
1579 # Common cleaning targets.
1580
1581 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1582 clean: common-clean
1583 mostlyclean: common-mostlyclean
1584
1585 do-tests-clean:
1586         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) \
1587                                                       $(tests-internal) \
1588                                                       $(xtests) \
1589                                                       $(test-srcs)) \
1590                                      $(addsuffix .test-result,$(tests) \
1591                                                               $(tests-internal) \
1592                                                               $(xtests) \
1593                                                               $(test-srcs)))
1594
1595 # Remove the object files.
1596 common-mostlyclean:
1597         -rm -f $(addprefix $(objpfx),$(tests) $(tests-internal) $(xtests) \
1598                                      $(test-srcs) \
1599                                      $(others) $(sysdep-others) stubs \
1600                                      $(addsuffix .o,$(tests) \
1601                                                     $(tests-internal) \
1602                                                     $(xtests) \
1603                                                     $(test-srcs) \
1604                                                     $(others) \
1605                                                     $(sysdep-others)) \
1606                                      $(addsuffix .out,$(tests) \
1607                                                       $(tests-internal) \
1608                                                       $(xtests) \
1609                                                       $(test-srcs)) \
1610                                      $(addsuffix .test-result,$(tests) \
1611                                                               $(tests-internal) \
1612                                                               $(xtests) \
1613                                                               $(test-srcs)))
1614         -rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
1615                                      $(install-lib) $(install-lib.so) \
1616                                      $(install-lib.so:%.so=%_pic.a))
1617         -rm -f core
1618         -rm -f $(objpfx)rtld-*.os
1619         $(rmobjs)
1620 define rmobjs
1621 $(foreach o,$(object-suffixes-for-libc),
1622 -rm -f $(objpfx)stamp$o $(o-objects))
1623 endef
1624
1625 # Also remove the dependencies and generated source files.
1626 common-clean: common-mostlyclean
1627         -rm -f $(addprefix $(objpfx),$(generated))
1628         -rm -f $(objpfx)*.d $(objpfx)*.dt
1629         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1630         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1631         -rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
1632 \f
1633 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1634 # for each function which is a stub.
1635
1636 ifdef objpfx
1637 .PHONY: stubs # The parent Makefile calls this target.
1638 stubs: $(objpfx)stubs
1639 endif
1640 objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1641                   $(addprefix $(objpfx),$(extra-objs))
1642 $(objpfx)stubs: $(objs-for-stubs)
1643 ifneq (,$(strip $(objs-for-stubs)))
1644         (cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1645         $(AWK) '/\.gnu\.glibc-stub\./ { \
1646                   sub(/\.gnu\.glibc-stub\./, "", $$2); \
1647                   stubs[$$2] = 1; } \
1648                 END { for (s in stubs) print "#define __stub_" s }' > $@T
1649         mv -f $@T $@
1650 else
1651         > $@
1652 endif
1653 \f
1654 ifneq (,$(strip $(gpl2lgpl)))
1655 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1656 # Snarf from the master source and frob the copying notice.
1657 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1658         sed -f $^ > $@-tmp
1659 # So I don't edit them by mistake.
1660         chmod a-w $@-tmp
1661         mv -f $@-tmp $@
1662 endif
1663 endif
1664
1665 # Local Variables:
1666 # mode: makefile
1667 # End: