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 124 # the target is out of date.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