Makerules

   1 # Copyright (C) 1991-2016 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 endif # avoid-generated
 109 endif # $(build-shared) = yes
 110
 111 ifndef avoid-generated
 112 ifneq (,$(CXX))
 113 # If C++ headers <cstdlib> or <cmath> are used, GCC 6 will include
 114 # /usr/include/stdlib.h or /usr/include/math.h from "#include_next"
 115 # (instead of stdlib/stdlib.h or math/math.h in the glibc source
 116 # directory), and this turns up as a make dependency.  An implicit
 117 # rule will kick in and make will try to install stdlib/stdlib.h or
 118 # math/math.h as /usr/include/stdlib.h or /usr/include/math.h because
 119 # the target is out of date.  We make a copy of <cstdlib> and <cmath>
 120 # in the glibc build directory so that stdlib/stdlib.h and math/math.h
 121 # will be used instead of /usr/include/stdlib.h and /usr/include/math.h.
 122 before-compile := $(common-objpfx)cstdlib $(common-objpfx)cmath \
 123                   $(before-compile)
 124 cstdlib=$(shell echo "\#include <cstdlib>" | $(CXX) -M -MP -x c++ - \
 125                 | sed -n "/cstdlib:/{s/:$$//;p}")
 126 $(common-objpfx)cstdlib: $(cstdlib)
 127         $(INSTALL_DATA) $< $@T
 128         $(move-if-change) $@T $@
 129 cmath=$(shell echo "\#include <cmath>" | $(CXX) -M -MP -x c++ - \
 130                 | sed -n "/cmath:/{s/:$$//;p}")
 131 $(common-objpfx)cmath: $(cmath)
 132         $(INSTALL_DATA) $< $@T
 133         $(move-if-change) $@T $@
 134 endif
 135
 136 before-compile := $(common-objpfx)libc-abis.h $(before-compile)
 137 $(common-objpfx)libc-abis.h: $(common-objpfx)libc-abis.stamp; @:
 138 $(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \
 139                              $(firstword $(wildcard $(sysdirs:=/libc-abis)) \
 140                                          $(..)libc-abis) \
 141                              $(..)Makerules
 142         $(SHELL) $< \
 143                  $(base-machine)-$(config-vendor)-$(config-os) \
 144                  < $(word 2,$^) > $(@:.stamp=.h)T
 145         $(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h)
 146         touch $@
 147 common-generated += $(common-objpfx)libc-abis.h
 148 endif # avoid-generated
 149
 150 ifeq (yes,$(build-shared))
 151 $(common-objpfx)runtime-linker.h: $(common-objpfx)runtime-linker.stamp; @:
 152 $(common-objpfx)runtime-linker.stamp: $(common-objpfx)config.make
 153         $(make-target-directory)
 154         echo '#define RUNTIME_LINKER "$(rtlddir)/$(rtld-installed-name)"' \
 155                 > ${@:stamp=T}
 156         $(move-if-change) ${@:stamp=T} ${@:stamp=h}
 157         touch $@
 158 endif
 159
 160 # Make sure the subdirectory for object files gets created.
 161 ifdef objpfx
 162 ifeq (,$(wildcard $(objpfx).))
 163 before-compile += $(objpfx).
 164 $(objpfx).:
 165         $(make-target-directory)
 166 endif
 167 endif
 168
 169 # Remove existing files from `before-compile'.  Things are added there when
 170 # they must exist for dependency generation to work right, but once they
 171 # exist there is no further need for every single file to depend on them,
 172 # and those gratuitous dependencies result in many gratuitous
 173 # recompilations.
 174 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 175
 176 # Don't let any before-compile file be an intermediate and get removed.
 177 ifdef before-compile
 178 $(before-compile):
 179 endif
 180
 181 # We don't want $(common-objpfx) files to depend on miscellaneous stuff
 182 # in subdirs.
 183 ifdef subdir
 184 common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
 185 else
 186 common-before-compile = $(before-compile)
 187 endif
 188
 189 ifndef subdir
 190 # If a makefile needs to do something conditional on something that
 191 # can only be figured out from headers, write a FOO.make.c input
 192 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
 193 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
 194 #
 195 # We only generate these in the top-level makefile, to avoid any weirdness
 196 # from subdir-specific makefile tweaks creeping in on an update.
 197 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
 198         rm -f $@T $@.dT
 199         (echo '# Generated from $*.make.c by Makerules.'; \
 200          $(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
 201                -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
 202          | sed -n '/@@@/{s/@@@[  ]*\(.*\)@@@/\1/;s/[     ]*$$//p;}'; \
 203          echo 'common-generated += $(@F)'; \
 204          sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
 205          rm -f $@.dT) > $@T
 206         mv -f $@T $@
 207 endif
 208
 209 ifdef subdir
 210 sed-remove-dotdot := -e 's@  *\.\.\/\([^        \]*\)@ $$(..)\1@g' \
 211                      -e 's@^\.\.\/\([^  \]*\)@$$(..)\1@g'
 212 else
 213 sed-remove-dotdot := -e 's@  *\([^      \/$$][^         \]*\)@ $$(..)\1@g' \
 214                      -e 's@^\([^        \/$$][^         \]*\)@$$(..)\1@g'
 215 endif
 216
 217
 218 ifdef gen-as-const-headers
 219 # Generating headers for assembly constants.
 220 # We need this defined early to get into before-compile before
 221 # it's used in sysd-rules, below.
 222 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
 223                                            %.sym $(common-before-compile)
 224         $(AWK) -f $< $(filter %.sym,$^) \
 225         | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \
 226                 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
 227         sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
 228                 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
 229         rm -f $(@:.h.d=.h)T3
 230         sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
 231             $(@:.h=.h.d)T > $(@:.h=.h.d)T2
 232         rm -f $(@:.h=.h.d)T
 233         mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
 234         mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
 235 vpath %.sym $(sysdirs)
 236 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 237
 238 tests += $(gen-as-const-headers:%.sym=test-as-const-%)
 239 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
 240 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
 241                             %.sym $(common-objpfx)%.h
 242         ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
 243          $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
 244          echo '#include "$(..)test-skeleton.c"') > $@T
 245         mv -f $@T $@
 246 endif
 247 \f
 248 ifeq (yes,$(build-shared))
 249 # Generate the header containing the names of all shared libraries.
 250 # We use a stamp file to avoid unnecessary recompilations.
 251 before-compile += $(common-objpfx)gnu/lib-names.h
 252 ifeq ($(soversions.mk-done),t)
 253 ifndef abi-variants
 254 lib-names-h-abi = gnu/lib-names.h
 255 lib-names-stmp-abi = gnu/lib-names.stmp
 256 else
 257 lib-names-h-abi = gnu/lib-names-$(default-abi).h
 258 lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp
 259 before-compile += $(common-objpfx)$(lib-names-h-abi)
 260 common-generated += gnu/lib-names.h
 261 install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi)
 262 $(common-objpfx)gnu/lib-names.h:
 263         $(make-target-directory)
 264         { \
 265          echo '/* This file is automatically generated.';\
 266          echo '   It defines macros to allow user program to find the shared'; \
 267          echo '   library files which come as part of GNU libc.  */'; \
 268          echo '#ifndef __GNU_LIB_NAMES_H'; \
 269          echo '#define __GNU_LIB_NAMES_H        1'; \
 270          echo ''; \
 271          $(if $(abi-includes), \
 272           $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 273           echo '';) \
 274          $(foreach v,$(abi-variants),\
 275          $(if $(abi-$(v)-condition),\
 276          echo '#if $(abi-$(v)-condition)'; \
 277          echo '# include <gnu/lib-names-$(v).h>'); \
 278          $(if $(abi-$(v)-condition),echo '#endif';)) \
 279          echo ''; \
 280          echo '#endif   /* gnu/lib-names.h */'; \
 281         } >  $@
 282 endif
 283 $(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @:
 284 $(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \
 285                                        $(common-objpfx)soversions.i
 286         $(make-target-directory)
 287         { \
 288          $(if $(abi-variants), \
 289          echo '/* This file is automatically generated.  */';\
 290          echo '#ifndef __GNU_LIB_NAMES_H'; \
 291          echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \
 292          echo '#endif';, \
 293          echo '/* This file is automatically generated.';\
 294          echo '   It defines macros to allow user program to find the shared'; \
 295          echo '   library files which come as part of GNU libc.  */'; \
 296          echo '#ifndef __GNU_LIB_NAMES_H'; \
 297          echo '#define __GNU_LIB_NAMES_H        1';) \
 298          echo ''; \
 299          ($(foreach s,$(all-sonames), echo $(s);)) \
 300          | LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \
 301          $(if $(abi-variants),, \
 302          echo ''; \
 303          echo '#endif   /* gnu/lib-names.h */';) \
 304         } >  ${@:stmp=T}
 305         $(move-if-change) ${@:stmp=T} ${@:stmp=h}
 306         touch $@
 307 endif
 308 common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi)
 309 endif
 310 \f
 311 ###############################################################################
 312 # NOTE!  Everything adding to before-compile needs to come before this point! #
 313 ###############################################################################
 314
 315 # Generate an ordered list of implicit rules which find the source files in
 316 # each sysdep directory.  The old method was to use vpath to search all the
 317 # sysdep directories.  However, that had the problem that a .S file in a
 318 # later directory would be chosen over a .c file in an earlier directory,
 319 # which does not preserve the desired sysdeps ordering behavior.
 320
 321 # System-dependent makefiles can put in `inhibit-sysdep-asm' regexps
 322 # matching sysdep directories whose assembly source files should be
 323 # suppressed.
 324
 325 -include $(common-objpfx)sysd-rules
 326 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 327 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 328 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 329 sysd-rules-force = FORCE
 330 FORCE:
 331 endif
 332 $(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
 333                             $(common-objpfx)config.make $(..)Makerules \
 334                             $(sysdep-makefiles) $(sysdep-makeconfigs) \
 335                             $(sysd-rules-force)
 336         -@rm -f $@T
 337         LC_ALL=C $(AWK) -f $< > $@T \
 338                         -v all_object_suffixes='$(all-object-suffixes)' \
 339                         -v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
 340                         -v sysd_rules_patterns='$(sysd-rules-patterns)' \
 341                         -v config_sysdirs='$(config-sysdirs)'
 342         mv -f $@T $@
 343
 344 ifndef sysd-rules-done
 345 # Don't do deps until this exists, because it provides rules to make the deps.
 346 no_deps=t
 347 endif
 348
 349 define o-iterator-doit
 350 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 351 endef
 352 object-suffixes-left := $(all-object-suffixes)
 353 include $(o-iterator)
 354
 355 define o-iterator-doit
 356 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 357 endef
 358 object-suffixes-left := $(all-object-suffixes)
 359 include $(o-iterator)
 360
 361 define o-iterator-doit
 362 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
 363 endef
 364 object-suffixes-left := $(all-object-suffixes)
 365 include $(o-iterator)
 366
 367 # Omit the objpfx rules when building in the source tree, because
 368 # objpfx is empty and so these rules just override the ones above.
 369 ifdef objpfx
 370 # Define first rules to find the source files in $(objpfx).
 371 # Generated source files will end up there.
 372 define o-iterator-doit
 373 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 374 endef
 375 object-suffixes-left := $(all-object-suffixes)
 376 include $(o-iterator)
 377
 378 define o-iterator-doit
 379 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 380 endef
 381 object-suffixes-left := $(all-object-suffixes)
 382 include $(o-iterator)
 383 endif
 384
 385 # Generate version maps, but wait until sysdep-subdirs is known
 386 ifeq ($(sysd-sorted-done),t)
 387 ifeq ($(build-shared),yes)
 388 -include $(common-objpfx)sysd-versions
 389 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 390 common-generated += $(version-maps)
 391 postclean-generated += sysd-versions Versions.all abi-versions.h \
 392                        Versions.def Versions.v.i Versions.v
 393
 394 ifndef avoid-generated
 395 ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
 396 sysd-versions-force = FORCE
 397 FORCE:
 398 endif
 399
 400 $(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \
 401                               $(common-objpfx)Versions.v
 402         LC_ALL=C $(AWK) -f $^ > $@T
 403         mv -f $@T $@
 404
 405 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 406                               $(common-objpfx)soversions.i \
 407                               $(common-objpfx)Versions.def
 408         { while read which lib version setname; do \
 409             test x"$$which" = xDEFAULT || continue; \
 410             test -z "$$setname" || echo "$$lib : $$setname"; \
 411           done < $(word 2,$^); \
 412           cat $(word 3,$^); \
 413         } | LC_ALL=C $(AWK) -f $< > $@T
 414         mv -f $@T $@
 415 # See %.v/%.v.i implicit rules in Makeconfig.
 416 $(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
 417                               $(wildcard $(sysdirs:%=%/Versions)) \
 418                               $(sysd-versions-force)
 419 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
 420                                $(common-objpfx)Versions.v \
 421                                $(..)scripts/versions.awk
 422         ( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
 423           cat $(word 2,$^) \
 424           | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 425                             -v move_if_change='$(move-if-change)' \
 426                             -f $(word 3,$^); \
 427         ) > $@T
 428         mv -f $@T $@
 429 endif # avoid-generated
 430 endif # $(build-shared) = yes
 431 endif # sysd-sorted-done
 432
 433 # Generate .dT files as we compile.
 434 compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
 435 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 436 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 437 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 438
 439 # Like compile-mkdep-flags, but for use with $(BUILD_CC).  We don't want to
 440 # track system includes here, they may spuriously trigger an install rule,
 441 # and would cause the check-local-headers test to fail.
 442 native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@
 443
 444 # GCC can grok options after the file name, and it looks nicer that way.
 445 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 446 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
 447 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
 448                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 449 COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
 450 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
 451                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 452
 453 # We need this for the output to go in the right place.  It will default to
 454 # empty if make was configured to work with a cc that can't grok -c and -o
 455 # together.  You can't compile the C library with such a compiler.
 456 OUTPUT_OPTION = -o $@
 457
 458 # This is the end of the pipeline for compiling generated C code.
 459 compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)
 460
 461 # We need the $(CFLAGS) to be in there to have the right predefines during
 462 # the dependency run for C sources.  But having it for assembly sources can
 463 # get the wrong predefines.
 464 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
 465
 466 define +make-deps
 467 $(make-target-directory)
 468 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
 469              $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
 470 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 471 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
 472 mv -f $(@:.d=.T) $@ $(generate-md5)
 473 endef
 474
 475 ifneq (,$(objpfx))
 476 # Continuation lines here are dangerous because they introduce spaces!
 477 define sed-remove-objpfx
 478 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 479 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 480 endef
 481 endif
 482 \f
 483 # Modify the list of routines we build for different targets
 484
 485 ifeq (yes,$(build-shared))
 486 ifndef libc.so-version
 487 # Undefine this because it can't work when we libc.so is unversioned.
 488 static-only-routines =
 489 endif
 490 endif
 491
 492 elide-routines.oS += $(filter-out $(static-only-routines),\
 493                                   $(routines) $(aux) $(sysdep_routines))
 494 elide-routines.os += $(static-only-routines)
 495
 496 # If we have versioned code we don't need the old versions in any of the
 497 # static libraries.
 498 elide-routines.o  += $(shared-only-routines)
 499 elide-routines.op += $(shared-only-routines)
 500 elide-routines.og += $(shared-only-routines)
 501 \f
 502 # Shared library building.
 503
 504 ifeq (yes,$(build-shared))
 505
 506 # Reference map file only when shared libraries are built and a map file name
 507 # is given.
 508 ifeq ($(build-shared),yes)
 509 map-file = $(firstword $($(@F:.so=-map)) \
 510                        $(addprefix $(common-objpfx), \
 511                                    $(filter $(@F:.so=.map),$(version-maps))))
 512 load-map-file = $(map-file:%=-Wl,--version-script=%)
 513 endif
 514
 515 # Compiler arguments to use to link a shared object with libc and
 516 # ld.so.  This is intended to be as similar as possible to a default
 517 # link with an installed libc.
 518 link-libc-args = -Wl,--start-group \
 519                  $(libc-for-link) \
 520                  $(common-objpfx)libc_nonshared.a \
 521                  $(as-needed) $(elf-objpfx)ld.so $(no-as-needed) \
 522                  -Wl,--end-group
 523
 524 # The corresponding shared libc to use.  This may be modified for a
 525 # particular target.
 526 libc-for-link = $(common-objpfx)libc.so
 527
 528 # The corresponding dependencies.  As these are used in dependencies,
 529 # not just commands, they cannot use target-specific variables so need
 530 # to name both possible libc.so objects.
 531 link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
 532                  $(common-objpfx)libc_nonshared.a $(elf-objpfx)ld.so
 533
 534 # Pattern rule to build a shared object from an archive of PIC objects.
 535 # This must come after the installation rules so Make doesn't try to
 536 # build shared libraries in place from the installed *_pic.a files.
 537 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 538 # on other shared objects.  The linking with libc and ld.so is intended
 539 # to be as similar as possible to a default link with an installed libc.
 540 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(link-libc-deps)
 541         $(build-shlib) $(link-libc-args)
 542         $(call after-link,$@)
 543
 544 define build-shlib-helper
 545 $(LINK.o) -shared -static-libgcc -Wl,-O1 $(sysdep-LDFLAGS) \
 546           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(rtld-LDFLAGS) \
 547           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 548           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 549           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 550           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 551           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 552 endef
 553
 554 ifeq (yes,$(use-default-link))
 555 # If the linker is good enough, we can let it use its default linker script.
 556 shlib-lds =
 557 shlib-lds-flags =
 558 else
 559 # binutils only position loadable notes into the first page for binaries,
 560 # not for shared objects
 561 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
 562         $(LINK.o) -shared -Wl,-O1 \
 563                   -nostdlib -nostartfiles \
 564                   $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
 565                   -Wl,--verbose 2>&1 | \
 566           sed > $@T \
 567               -e '/^=========/,/^=========/!d;/^=========/d' \
 568               $(if $(filter yes,$(have-hash-style)), \
 569                    -e 's/^.*\.gnu\.hash[        ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 570                    -e '/^[      ]*\.hash[       ]*:.*$$/{h;d;}' \
 571                    -e '/DATA_SEGMENT_ALIGN/{H;g}' \
 572                 , \
 573                    -e 's/^.*\.hash[     ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 574                ) \
 575               -e 's/^.*\*(\.dynbss).*$$/& \
 576                  PROVIDE(__start___libc_freeres_ptrs = .); \
 577                  *(__libc_freeres_ptrs) \
 578                  PROVIDE(__stop___libc_freeres_ptrs = .);/'\
 579               -e 's@^.*\*(\.jcr).*$$@& \
 580                  PROVIDE(__start___libc_subfreeres = .);\
 581                  __libc_subfreeres : { *(__libc_subfreeres) }\
 582                  PROVIDE(__stop___libc_subfreeres = .);\
 583                  PROVIDE(__start___libc_atexit = .);\
 584                  __libc_atexit : { *(__libc_atexit) }\
 585                  PROVIDE(__stop___libc_atexit = .);\
 586                  PROVIDE(__start___libc_thread_subfreeres = .);\
 587                  __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
 588                  PROVIDE(__stop___libc_thread_subfreeres = .);\
 589                  PROVIDE(__start___libc_IO_vtables = .);\
 590                  __libc_IO_vtables : { *(__libc_IO_vtables) }\
 591                  PROVIDE(__stop___libc_IO_vtables = .);\
 592                  /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
 593         test -s $@T
 594         mv -f $@T $@
 595 common-generated += shlib.lds
 596
 597 shlib-lds = $(common-objpfx)shlib.lds
 598 shlib-lds-flags = -T $(shlib-lds)
 599 endif
 600
 601 define build-shlib
 602 $(build-shlib-helper) -o $@ $(shlib-lds-flags) \
 603           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 604 endef
 605
 606 define build-module-helper
 607 $(LINK.o) -shared -static-libgcc $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
 608           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
 609           -B$(csu-objpfx) $(load-map-file) \
 610           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 611           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 612 endef
 613
 614 # This macro is similar to build-shlib but it does not define a soname
 615 # and it does not depend on the destination name to start with `lib'.
 616 # binutils only position loadable notes into the first page for binaries,
 617 # not for shared objects
 618 define build-module
 619 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 620           $(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
 621 $(call after-link,$@)
 622 endef
 623 define build-module-asneeded
 624 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 625           $(csu-objpfx)abi-note.o \
 626           -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
 627           $(link-libc-args)
 628 $(call after-link,$@)
 629 endef
 630
 631 build-module-helper-objlist = \
 632         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 633                    $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
 634                                 $(link-libc-deps),$^))
 635
 636 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 637 build-shlib-objlist = $(build-module-helper-objlist) \
 638                       $(LDLIBS-$(@F:lib%.so=%).so)
 639
 640 # Don't try to use -lc when making libc.so itself.
 641 # Also omits crti.o and crtn.o, which we do not want
 642 # since we define our own `.init' section specially.
 643 LDFLAGS-c.so = -nostdlib -nostartfiles
 644 # But we still want to link libc.so against $(libc.so-gnulib).
 645 LDLIBS-c.so += $(libc.so-gnulib)
 646 # Give libc.so an entry point and make it directly runnable itself.
 647 LDFLAGS-c.so += -e __libc_main
 648 # If lazy relocation is disabled add the -z now flag.
 649 ifeq ($(bind-now),yes)
 650 LDFLAGS-c.so += -Wl,-z,now
 651 endif
 652 # Pre-link the objects of libc_pic.a so that we can locally resolve
 653 # COMMON symbols before we link against ld.so.  This is because ld.so
 654 # contains some of libc_pic.a already, which will prevent the COMMONs
 655 # from being allocated in libc.so, which introduces evil dependencies
 656 # between libc.so and ld.so, which can make it impossible to upgrade.
 657 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 658         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 659         $(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
 660
 661 ifeq (,$(strip $(shlib-lds-flags)))
 662 # Generate a list of -R options to excise .gnu.glibc-stub.* sections.
 663 $(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
 664         $(OBJDUMP) -h $< | \
 665         $(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
 666                 > $@T
 667         mv -f $@T $@
 668 # Apply those -R options.
 669 $(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
 670                                    $(common-objpfx)libc_pic.os
 671         $(OBJCOPY) @$^ $@
 672 generated += libc_pic.opts libc_pic.os.clean
 673
 674 libc_pic_clean := .clean
 675 endif
 676
 677 # Build a possibly-modified version of libc_pic.a for use in building
 678 # linkobj/libc.so.
 679 ifeq (,$(filter sunrpc,$(subdirs)))
 680 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a
 681         $(make-target-directory)
 682         ln -f $< $@
 683 else
 684 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a \
 685                                     $(common-objpfx)sunrpc/librpc_compat_pic.a
 686         $(make-target-directory)
 687         (cd $(common-objpfx)linkobj; \
 688          $(AR) x ../libc_pic.a; \
 689          rm $$($(AR) t ../sunrpc/librpc_compat_pic.a | sed 's/^compat-//'); \
 690          $(AR) x ../sunrpc/librpc_compat_pic.a; \
 691          $(AR) cr libc_pic.a *.os; \
 692          rm *.os)
 693 endif # $(subdirs) contains sunrpc
 694
 695 # Clear link-libc-deps for the libc.so libraries so build-shlibs does not
 696 # filter ld.so out of the list of linked objects.
 697 $(common-objpfx)libc.so: link-libc-deps = # empty
 698 $(common-objpfx)linkobj/libc.so: link-libc-deps = # empty
 699
 700 # Use our own special initializer and finalizer files for the libc.so
 701 # libraries.
 702 $(common-objpfx)libc.so: $(elf-objpfx)soinit.os \
 703                          $(common-objpfx)libc_pic.os$(libc_pic_clean) \
 704                          $(elf-objpfx)sofini.os \
 705                          $(elf-objpfx)interp.os \
 706                          $(elf-objpfx)ld.so \
 707                          $(shlib-lds)
 708         $(build-shlib)
 709         $(call after-link,$@)
 710
 711 $(common-objpfx)linkobj/libc.so: $(elf-objpfx)soinit.os \
 712                          $(common-objpfx)linkobj/libc_pic.a \
 713                          $(elf-objpfx)sofini.os \
 714                          $(elf-objpfx)interp.os \
 715                          $(elf-objpfx)ld.so \
 716                          $(shlib-lds)
 717         $(build-shlib)
 718         $(call after-link,$@)
 719
 720 ifeq ($(build-shared),yes)
 721 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 722 endif
 723 common-generated += libc.so libc_pic.os
 724 ifdef libc.so-version
 725 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 726         $(make-link)
 727 common-generated += libc.so$(libc.so-version)
 728 endif
 729 endif
 730 \f
 731 # Figure out the source filenames in this directory.
 732
 733 override sources := $(addsuffix .c,\
 734                         $(filter-out $(elided-routines),\
 735                             $(routines) $(aux) \
 736                             $(sysdep_routines)))
 737 sysdep_routines := $(sysdep_routines)
 738
 739 headers := $(headers) $(sysdep_headers)
 740
 741 # This is the list of all object files, gotten by
 742 # replacing every ".c" in `sources' with a ".o".
 743 override objects := $(addprefix $(objpfx),$(sources:.c=.o))
 744
 745
 746 # The makefile may define $(extra-libs) with `libfoo libbar'
 747 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 748 ifdef extra-libs
 749 # extra-lib.mk is included once for each extra lib to define rules
 750 # to build it, and to add its objects to the various variables.
 751 # During its evaluation, $(lib) is set to the name of the library.
 752 extra-libs-left := $(extra-libs)
 753 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 754 endif
 755
 756
 757 # The makefile may define $(modules-names) to build additional modules.
 758 # These are built with $(build-module), except any in $(modules-names-nobuild).
 759 ifdef modules-names
 760 # extra-lib.mk is included once for each extra lib to define rules
 761 # to build it, and to add its objects to the various variables.
 762 # During its evaluation, $(lib) is set to the name of the library.
 763 extra-modules-left := $(modules-names)
 764 include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
 765
 766 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
 767 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
 768                 $(objpfx)%.os $(shlib-lds) $(link-libs-deps)
 769         $(build-module)
 770 endif
 771 \f
 772 +depfiles := $(sources:.c=.d) \
 773              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 774              $(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
 775              $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
 776              $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
 777 ifeq ($(build-programs),yes)
 778 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 779 endif
 780 +depfiles := $(addprefix $(objpfx),\
 781                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 782                                       $(+depfiles)))
 783 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
 784 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
 785              $(wildcard $(all-dt-files:.dt=.d))
 786
 787 # This is a funny rule in that it removes its input file.
 788 %.d: %.dt
 789         @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
 790          mv -f $(@:.d=.T) $@ && \
 791          rm -f $<
 792
 793 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
 794 # They will be generated when they're needed, and trying too early won't work.
 795 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 796 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
 797                                                 $(+gen-as-const)))
 798
 799 ifdef +depfiles
 800 ifneq ($(no_deps),t)
 801 -include $(+depfiles)
 802 endif
 803 endif
 804 \f\f
 805 # Maximize efficiency by minimizing the number of rules.
 806 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 807 # Don't define any builtin rules.
 808 MAKEFLAGS := $(MAKEFLAGS)r
 809
 810 # Generic rule for making directories.
 811 %/:
 812 # mkdir isn't smart enough to strip a trailing /.
 813 # We always require a mkdir which supports the -p option to avoid error
 814 # messages in case of races.
 815         mkdir -p $(@:%/=%)
 816 \f
 817 # Make sure that object files are not removed
 818 # when they are intermediates between sources and library members.
 819 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 820
 821 # Make sure that the parent library archive is never removed.
 822 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 823 \f
 824 # Use the verbose option of ar and tar when not running silently.
 825 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 826 verbose := v
 827 else                                            # -s
 828 verbose :=
 829 endif                                           # not -s
 830
 831 ARFLAGS := r$(verbose)
 832 CREATE_ARFLAGS := cru$(verbose)
 833 \f
 834 # This makes all the object files in the parent library archive.
 835
 836 .PHONY: lib lib-noranlib
 837 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 838 lib-noranlib: libobjs
 839
 840 # For object-suffix $o, the list of objects with that suffix.
 841 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 842 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 843                                                        $(elide-routines$o)),\
 844                                             $(objects))) \
 845             $(addprefix $(objpfx),$(o-objects$o))
 846
 847 others: $(addprefix $(objpfx),$(install-lib))
 848
 849 ifndef objects
 850
 851 # Create the stamp$o files to keep the parent makefile happy.
 852 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 853 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 854         $(make-target-directory)
 855         rm -f $@; > $@
 856 else
 857
 858 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 859 # timestamp file; these rules (one explicit rule is generated for each
 860 # object suffix) write a list of objects to update in the stamp file.
 861 # The parent will then actually add them all to the archive in the
 862 # archive rule, below.
 863 define o-iterator-doit
 864 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 865 endef
 866 define do-stamp
 867 $(make-target-directory)
 868 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 869 mv -f $@T $@
 870 endef
 871 object-suffixes-left := $(object-suffixes-for-libc)
 872 include $(o-iterator)
 873
 874 endif
 875
 876 # Now define explicit rules to build the library archives; these depend
 877 # on the stamp files built above.
 878 define o-iterator-doit
 879 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 880                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 881 endef
 882 define do-makelib
 883 cd $(common-objdir) && \
 884 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 885 endef
 886 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 887 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 888 ifndef subdir
 889 $(subdirs-stamps): subdir_lib;
 890 endif
 891 object-suffixes-left = $(object-suffixes-for-libc)
 892 include $(o-iterator)
 893
 894
 895 # This makes all the object files.
 896 .PHONY: objects objs libobjs extra-objs
 897 objects objs: libobjs extra-objs
 898 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 899 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 900
 901 # Canned sequence for building an extra library archive.
 902 define build-extra-lib
 903 $(patsubst %/,cd % &&,$(objpfx)) \
 904 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 905       $(patsubst $(objpfx)%,%,$^)
 906 endef
 907 \f
 908 # Installation.
 909
 910 .PHONY: force-install
 911 force-install:
 912
 913 # $(install-lib) are installed from the object directory into $(libdir);
 914 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 915 # unless they also appear in $(non-lib.a).  $(install-data) are installed as
 916 # they are into $(datadir).  $(headers) are installed as they are in
 917 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 918 # are installed from the object directory into $(bindir), $(bindir) and
 919 # $(sbindir), respectively.  $(install-others) and $(install-others-programs)
 920 # are absolute path names of files to install; rules to install them are
 921 # defined elsewhere.
 922
 923 # The simple library name to install libc.a under.
 924 # This could be defined by a sysdep Makefile.
 925 ifndef libc-name
 926 libc-name := c
 927 endif
 928
 929 define do-install
 930 $(make-target-directory)
 931 $(INSTALL_DATA) $< $@
 932 endef
 933
 934 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 935 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 936 define make-target-directory
 937 $(addprefix $(..)./scripts/mkinstalldirs ,\
 938             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 939 endef
 940
 941 # Any directory (parent or subdir) should install libc.a; this way
 942 # "make install" in a subdir is guaranteed to install everything it changes.
 943 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 944                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 945                                                      $(libprefix)$(libc-name)))
 946
 947 .PHONY: check-install-supported
 948 check-install-supported:
 949
 950 # Check to see if the prefix or exec_prefix GNU standard variable
 951 # has been overridden on the command line and, if so, fail with
 952 # an error message since doing so is not supported (set DESTDIR
 953 # instead).
 954 ifeq ($(origin prefix),command line)
 955 check-install-supported:
 956         $(error Overriding prefix is not supported. Set DESTDIR instead.)
 957 endif
 958
 959 ifeq ($(origin exec_prefix),command line)
 960 check-install-supported:
 961         $(error Overriding exec_prefix is not supported. Set DESTDIR instead.)
 962 endif
 963
 964 install: check-install-supported
 965
 966 install: $(installed-libcs)
 967 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 968         $(make-target-directory)
 969         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 970
 971 define do-install-program
 972 $(make-target-directory)
 973 $(INSTALL_PROGRAM) $< $@.new
 974 mv -f $@.new $@
 975 endef
 976
 977 define do-install-script
 978 $(make-target-directory)
 979 $(INSTALL_SCRIPT) $< $@.new
 980 mv -f $@.new $@
 981 endef
 982
 983 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
 984 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
 985
 986 ifeq (yes,$(build-shared))
 987 # Find which .so's have versions.
 988 versioned := $(strip $(foreach so,$(install-lib.so),\
 989                                $(patsubst %,$(so),$($(so)-version))))
 990
 991 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
 992 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
 993
 994 # For versioned libraries, we install three files:
 995 #       $(inst_libdir)/libfoo.so        -- for linking, symlink or ld script
 996 #       $(inst_slibdir)/libfoo.so.NN    -- for loading by SONAME, symlink
 997 #       $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
 998 lib-version := $(firstword $($(subdir)-version) $(version))
 999 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
1000                       $(foreach L,$(install-lib.so-versioned),\
1001                                 $(inst_libdir)/$L \
1002                                 $(inst_slibdir)/$(L:.so=)-$(lib-version).so \
1003                                 $(inst_slibdir)/$L$($L-version))
1004
1005 # Install all the unversioned shared libraries.
1006 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
1007     $(objpfx)%.so $(+force)
1008         $(do-install-program)
1009
1010 ifneq ($(findstring -s,$(LN_S)),)
1011 define make-link
1012 rm -f $@.new
1013 $(SHELL) $(..)scripts/rellns-sh $< $@.new
1014 mv -f $@.new $@
1015 endef
1016 else
1017 # If we have no symbolic links don't bother with rellns-sh.
1018 define make-link
1019 rm -f $@.new
1020 $(LN_S) $< $@.new
1021 mv -f $@.new $@
1022 endef
1023 endif
1024
1025 ifeq (yes,$(build-shared))
1026 ifeq (no,$(cross-compiling))
1027 symbolic-link-prog := $(elf-objpfx)sln
1028 symbolic-link-list := $(elf-objpfx)symlink.list
1029 define make-shlib-link
1030 echo `$(..)scripts/rellns-sh -p $< $@` $@ >> $(symbolic-link-list)
1031 endef
1032 else # cross-compiling
1033 # We need a definition that can be used by elf/Makefile's install rules.
1034 symbolic-link-prog = $(LN_S)
1035 endif
1036 endif
1037 ifndef make-shlib-link
1038 define make-shlib-link
1039 rm -f $@
1040 $(LN_S) `$(..)scripts/rellns-sh -p $< $@` $@
1041 endef
1042 endif
1043
1044 ifdef libc.so-version
1045 # For a library specified to be version N, install three files:
1046 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
1047 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
1048
1049 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
1050                                            $(+force)
1051         $(make-shlib-link)
1052 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
1053         $(do-install-program)
1054 install: $(inst_slibdir)/libc.so$(libc.so-version)
1055
1056 # This fragment of linker script gives the OUTPUT_FORMAT statement
1057 # for the configuration we are building.  We put this statement into
1058 # the linker scripts we install for -lc et al so that they will not be
1059 # used by a link for a different format on a multi-architecture system.
1060 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
1061                             $(common-objpfx)config.make \
1062                             $(common-objpfx)config.h $(..)Makerules
1063 ifneq (unknown,$(output-format))
1064         echo > $@.new 'OUTPUT_FORMAT($(output-format))'
1065 else
1066         $(LINK.o) -shared $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
1067                   -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
1068         | sed -n -f $< > $@.new
1069         test -s $@.new
1070         rm -f $@.so
1071 endif
1072         mv -f $@.new $@
1073 common-generated += format.lds
1074
1075 ifndef subdir
1076 # What we install as libc.so for programs to link against is in fact a
1077 # link script.  It contains references for the various libraries we need.
1078 # The libc.so object is not complete since some functions are only defined
1079 # in libc_nonshared.a.
1080 # We need to use absolute paths since otherwise local copies (if they exist)
1081 # of the files are taken by the linker.
1082 install: $(inst_libdir)/libc.so
1083 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
1084                         $(common-objpfx)libc.so$(libc.so-version) \
1085                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
1086                                                   $(libprefix)$(libc-name)) \
1087                         $(+force)
1088         (echo '/* GNU ld script';\
1089          echo '   Use the shared library, but some functions are only in';\
1090          echo '   the static library, so try that secondarily.  */';\
1091          cat $<; \
1092          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
1093               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1094               ' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
1095         ) > $@.new
1096         mv -f $@.new $@
1097
1098 endif
1099
1100 else
1101 install: $(inst_slibdir)/libc.so
1102 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1103         $(do-install-program)
1104 endif
1105
1106 ifneq (,$(versioned))
1107 # Produce three sets of rules as above for all the smaller versioned libraries.
1108
1109 define o-iterator-doit
1110 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1111 endef
1112 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1113 ifneq (,$(object-suffixes-left))
1114 include $(o-iterator)
1115 endif
1116
1117 # Make symlinks in the build directory, because the versioned names might
1118 # be referenced by a DT_NEEDED in another library.
1119 define o-iterator-doit
1120 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1121 endef
1122 object-suffixes-left := $(versioned)
1123 include $(o-iterator)
1124
1125 generated += $(foreach o,$(versioned),$o$($o-version))
1126
1127 ifeq (,$($(subdir)-version))
1128 define o-iterator-doit
1129 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1130                                  $(+force);
1131         $$(make-shlib-link)
1132 endef
1133 object-suffixes-left := $(versioned)
1134 include $(o-iterator)
1135
1136 define o-iterator-doit
1137 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1138         $$(do-install-program)
1139 endef
1140 object-suffixes-left := $(versioned)
1141 include $(o-iterator)
1142 else
1143 define o-iterator-doit
1144 $(inst_slibdir)/$o$($o-version): \
1145   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1146         $$(make-shlib-link)
1147 endef
1148 object-suffixes-left := $(versioned)
1149 include $(o-iterator)
1150
1151 define o-iterator-doit
1152 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1153         $$(do-install-program)
1154 endef
1155 object-suffixes-left := $(versioned)
1156 include $(o-iterator)
1157 endif
1158 endif
1159
1160 define do-install-so
1161 $(do-install-program)
1162 $(patsubst %,$(LN_S) -f $(@F) \
1163                         $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1164            $(filter-out %.so,$@))
1165 endef
1166
1167 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1168 $(foreach v,$(so-versions),\
1169           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1170                                                $(+force)
1171         $(do-install-so)
1172 $(foreach v,$(so-versions),\
1173           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1174         $(do-install-so)
1175 endif
1176
1177 ifdef install-bin
1178 $(addprefix $(inst_bindir)/,$(install-bin)): \
1179     $(inst_bindir)/%: $(objpfx)% $(+force)
1180         $(do-install-program)
1181 endif
1182 ifdef install-bin-script
1183 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1184     $(inst_bindir)/%: $(objpfx)% $(+force)
1185         $(do-install-script)
1186 endif
1187 ifdef install-rootsbin
1188 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1189    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1190         $(do-install-program)
1191 endif
1192 ifdef install-sbin
1193 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1194     $(inst_sbindir)/%: $(objpfx)% $(+force)
1195         $(do-install-program)
1196 endif
1197 ifdef install-lib
1198 install-lib.a := $(filter lib%.a,$(install-lib))
1199 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1200 ifdef install-lib-non.a
1201 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1202   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1203         $(do-install)
1204 endif
1205 ifdef install-lib.a
1206 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1207   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1208         $(do-install)
1209 endif
1210 endif
1211 ifdef install-data
1212 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1213         $(do-install)
1214 endif
1215 headers := $(strip $(headers))
1216 ifdef headers
1217 # This implicit rule installs headers from the source directory.
1218 # It may be ignored in preference to rules from sysd-rules to find
1219 # headers in the sysdeps tree.
1220 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1221         $(do-install)
1222 $(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
1223         $(do-install)
1224 $(inst_includedir)/%.h: %.h $(+force)
1225         $(do-install)
1226 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1227         $(do-install)
1228 headers-nonh := $(filter-out %.h,$(headers))
1229 ifdef headers-nonh
1230 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1231                                                  % $(+force)
1232         $(do-install)
1233 endif   # headers-nonh
1234 endif   # headers
1235
1236 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1237         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1238         install-data-nosubdir install-headers-nosubdir
1239 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1240 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1241 install-rootsbin-nosubdir: \
1242         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1243 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1244 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1245                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1246                        $(addprefix $(libprefix),$(install-lib-non.a)))
1247 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1248 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1249 install-others-nosubdir: $(install-others)
1250 install-others-programs-nosubdir: $(install-others-programs)
1251
1252 # We need all the `-nosubdir' targets so that `install' in the parent
1253 # doesn't depend on several things which each iterate over the subdirs.
1254 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1255 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1256 install-%:: install-%-nosubdir ;
1257
1258 .PHONY: install install-no-libc.a-nosubdir
1259 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1260                             install-lib-nosubdir install-others-nosubdir
1261 ifeq ($(build-programs),yes)
1262 install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1263                             install-rootsbin-nosubdir install-sbin-nosubdir \
1264                             install-others-programs-nosubdir
1265 endif
1266 install: install-no-libc.a-nosubdir
1267 \f
1268 # Command to compile $< using the native libraries.
1269 define native-compile
1270 $(make-target-directory)
1271 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1272             $< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
1273 endef
1274
1275 # We always want to use configuration definitions.
1276 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
1277                    -DIS_IN_build -include $(common-objpfx)config.h
1278
1279 # Support the GNU standard name for this target.
1280 .PHONY: check
1281 check: tests
1282 # Special target to run tests which cannot be run unconditionally.
1283 # Maintainers should use this target.
1284 .PHONY: xcheck
1285 xcheck: xtests
1286
1287 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1288 ifneq (,$(all-nonlib))
1289 cpp-srcs-left = $(all-nonlib)
1290 lib := nonlib
1291 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
1292 endif
1293
1294
1295 ifeq ($(build-shared),yes)
1296 # Generate normalized lists of symbols, versions, and data sizes.
1297 # This is handy for checking against existing library binaries.
1298
1299 %.symlist: $(..)scripts/abilist.awk %.dynsym
1300         LC_ALL=C $(AWK) -f $^ > $@T
1301         mv -f $@T $@
1302
1303 %.dynsym: %.so
1304         LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
1305         mv -f $@T $@
1306
1307 # A sysdeps/.../Makefile can set abilist-pattern to something like
1308 # %-foo.abilist to look for libc-foo.abilist instead of libc.abilist.
1309 # This makes sense if multiple ABIs can be most cleanly supported by a
1310 # configuration without using separate sysdeps directories for each.
1311 ifdef abilist-pattern
1312 vpath $(abilist-pattern) $(+sysdep_dirs)
1313 endif
1314
1315 vpath %.abilist $(+sysdep_dirs)
1316
1317 # The .PRECIOUS rule prevents the files built by an implicit rule whose
1318 # target pattern is %.symlist from being considered "intermediate files"
1319 # and automatically removed.  We only want these files to be removed by
1320 # 'make clean', which is handled by the 'generated' variable.
1321 .PRECIOUS: %.symlist
1322 generated += $(extra-libs:=.symlist)
1323
1324 ifdef abilist-pattern
1325 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1326                           $(objpfx)%.symlist
1327         $(check-abi-pattern); \
1328         $(evaluate-test)
1329 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1330                           $(common-objpfx)%.symlist
1331         $(check-abi-pattern); \
1332         $(evaluate-test)
1333 endif
1334 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1335                           $(objpfx)%.symlist
1336         $(check-abi); \
1337         $(evaluate-test)
1338 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1339                           $(common-objpfx)%.symlist
1340         $(check-abi); \
1341         $(evaluate-test)
1342 define check-abi-pattern
1343         diff -p -U 0 $(filter $(abilist-pattern),$^) $(filter %.symlist,$^) \
1344              > $@
1345 endef
1346 define check-abi
1347         diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^) > $@
1348 endef
1349
1350 ifdef abilist-pattern
1351 update-abi-%: $(objpfx)%.symlist $(abilist-pattern)
1352         $(update-abi-pattern)
1353 update-abi-%: $(common-objpfx)%.symlist $(abilist-pattern)
1354         $(update-abi-pattern)
1355 endif
1356 update-abi-%: $(objpfx)%.symlist %.abilist
1357         $(update-abi)
1358 update-abi-%: $(common-objpfx)%.symlist %.abilist
1359         $(update-abi)
1360 define update-abi-pattern
1361 @if cmp -s $^ 2> /dev/null; \
1362  then \
1363       echo '+++ $(filter $(abilist-pattern),$^) is unchanged'; \
1364  else cp -f $^; \
1365       echo '*** Now check $(filter $(abilist-pattern),$^) changes for correctness ***'; \
1366  fi
1367 endef
1368 define update-abi
1369 @if cmp -s $^ 2> /dev/null; \
1370  then \
1371       echo '+++ $(filter %.abilist,$^) is unchanged'; \
1372  else cp -f $^; \
1373       echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
1374  fi
1375 endef
1376
1377 # Patch all .abilist files for one DSO.  The find command locates
1378 # abilist files for all architectures.  The regular expression in the
1379 # find invocation is needed to separate libc.abilist and
1380 # libcrypt.abilist, for example.  It assumes that abilist-pattern, if
1381 # set, is of the form "%-SUFFIX", and not "%SUFFIX", that is, there is
1382 # a non-alphanumeric seperator between the pattern and the suffix
1383 # added.  The abilist files in /generic/ are filtered out because
1384 # these are expected to remain empty.
1385 define update-all-abi
1386 $(SHELL) $(..)scripts/update-abilist.sh $^ \
1387   $$(find $(..)sysdeps \
1388     -regextype posix-egrep -regex '.*/$*([^a-z0-9].*)?\.abilist$$' \
1389     \! -regex '.*/generic/.*')
1390 endef
1391 ifdef abilist-pattern
1392 update-all-abi-%: $(abilist-pattern) $(objpfx)%.symlist
1393         $(update-all-abi)
1394 update-all-abi-%: $(abilist-pattern) $(common-objpfx)%.symlist
1395         $(update-all-abi)
1396 endif
1397 update-all-abi-%: %.abilist $(objpfx)%.symlist
1398         $(update-all-abi)
1399 update-all-abi-%: %.abilist $(common-objpfx)%.symlist
1400         $(update-all-abi)
1401
1402 .PHONY: update-abi update-all-abi check-abi
1403 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1404 update-all-abi: $(patsubst %.so,update-all-abi-%,$(install-lib.so-versioned))
1405 check-abi-list = $(patsubst %.so,$(objpfx)check-abi-%.out, \
1406                                  $(install-lib.so-versioned))
1407 check-abi: $(check-abi-list)
1408 ifdef subdir
1409 subdir_check-abi: check-abi
1410 subdir_update-abi: update-abi
1411 subdir_update-all-abi: update-all-abi
1412 else
1413 check-abi: subdir_check-abi
1414         if grep -q '^FAIL:' $(objpfx)*/check-abi*.test-result; then \
1415                 cat $(objpfx)*/check-abi*.out && exit 1; fi
1416 update-abi: subdir_update-abi
1417 update-all-abi: subdir_update-all-abi
1418 endif
1419
1420 ifeq ($(subdir),elf)
1421 check-abi: $(objpfx)check-abi-libc.out
1422 tests-special += $(objpfx)check-abi-libc.out
1423 update-abi: update-abi-libc
1424 update-all-abi: update-all-abi-libc
1425 common-generated += libc.symlist
1426 endif
1427
1428 ifeq ($(build-shared),yes)
1429 ifdef subdir
1430 tests-special += $(check-abi-list)
1431 endif
1432 endif
1433
1434 endif
1435 \f
1436 # These will have been set by sysdeps/posix/Makefile.
1437 L_tmpnam  ?= 1
1438 TMP_MAX   ?= 0
1439 L_ctermid ?= 1
1440 L_cuserid ?= 1
1441
1442 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1443
1444 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1445 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1446                    $(common-objpfx)config.make
1447         $(make-target-directory)
1448         { echo '#include "$(..)posix/bits/posix1_lim.h"';               \
1449           echo '#define _LIBC 1';                                       \
1450           echo '#include "$(..)misc/sys/uio.h"'; } |                    \
1451         $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)'   \
1452               $(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
1453         sed $(sed-remove-objpfx) $(sed-remove-dotdot)                   \
1454             $(@:st=dT) > $(@:st=dt)
1455         mv -f $(@:st=dt) $(@:st=d)
1456         fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`;       \
1457         filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`;    \
1458         iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`;        \
1459         fopen_max=$${fopen_max:-16};                                    \
1460         filename_max=$${filename_max:-1024};                            \
1461         if [ -z "$$iov_max" ]; then                                     \
1462           define_iov_max="# undef IOV_MAX";                             \
1463         else                                                            \
1464           define_iov_max="# define IOV_MAX $$iov_max";                  \
1465         fi;                                                             \
1466         sed -e "s/@FOPEN_MAX@/$$fopen_max/"                             \
1467             -e "s/@FILENAME_MAX@/$$filename_max/"                       \
1468             -e "s/@L_tmpnam@/$(L_tmpnam)/"                              \
1469             -e "s/@TMP_MAX@/$(TMP_MAX)/"                                \
1470             -e "s/@L_ctermid@/$(L_ctermid)/"                            \
1471             -e "s/@L_cuserid@/$(L_cuserid)/"                            \
1472             -e "s/@define_IOV_MAX@/$$define_iov_max/"                   \
1473             $< > $(@:st=h.new)
1474         $(move-if-change) $(@:st=h.new) $(@:st=h)
1475 # Remove these last so that they can be examined if something went wrong.
1476         rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1477         touch $@
1478 # Get dependencies.
1479 ifndef no_deps
1480 -include $(stdio_lim:h=d)
1481 endif
1482 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1483 \f
1484 FORCE:
1485
1486 .PHONY: echo-headers
1487 echo-headers:
1488         @echo $(headers)
1489
1490 %.bz2: %; bzip2 -9vk $<
1491 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1492 %.xz: %; xz -9evk $<
1493 \f
1494 # Common cleaning targets.
1495
1496 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1497 clean: common-clean
1498 mostlyclean: common-mostlyclean
1499
1500 do-tests-clean:
1501         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1502                                                       $(test-srcs)) \
1503                                      $(addsuffix .test-result,$(tests) \
1504                                                               $(xtests) \
1505                                                               $(test-srcs)))
1506
1507 # Remove the object files.
1508 common-mostlyclean:
1509         -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1510                                      $(others) $(sysdep-others) stubs \
1511                                      $(addsuffix .o,$(tests) $(xtests) \
1512                                                     $(test-srcs) $(others) \
1513                                                     $(sysdep-others)) \
1514                                      $(addsuffix .out,$(tests) $(xtests) \
1515                                                       $(test-srcs)) \
1516                                      $(addsuffix .test-result,$(tests) \
1517                                                               $(xtests) \
1518                                                               $(test-srcs)))
1519         -rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
1520                                      $(install-lib) $(install-lib.so) \
1521                                      $(install-lib.so:%.so=%_pic.a))
1522         -rm -f core
1523         -rm -f $(objpfx)rtld-*.os
1524         $(rmobjs)
1525 define rmobjs
1526 $(foreach o,$(object-suffixes-for-libc),
1527 -rm -f $(objpfx)stamp$o $(o-objects))
1528 endef
1529
1530 # Also remove the dependencies and generated source files.
1531 common-clean: common-mostlyclean
1532         -rm -f $(addprefix $(objpfx),$(generated))
1533         -rm -f $(objpfx)*.d $(objpfx)*.dt
1534         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1535         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1536         -rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
1537 \f
1538 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1539 # for each function which is a stub.
1540
1541 ifdef objpfx
1542 .PHONY: stubs # The parent Makefile calls this target.
1543 stubs: $(objpfx)stubs
1544 endif
1545 objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1546                   $(addprefix $(objpfx),$(extra-objs))
1547 $(objpfx)stubs: $(objs-for-stubs)
1548 ifneq (,$(strip $(objs-for-stubs)))
1549         (cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1550         $(AWK) '/\.gnu\.glibc-stub\./ { \
1551                   sub(/\.gnu\.glibc-stub\./, "", $$2); \
1552                   stubs[$$2] = 1; } \
1553                 END { for (s in stubs) print "#define __stub_" s }' > $@T
1554         mv -f $@T $@
1555 else
1556         > $@
1557 endif
1558 \f
1559 ifneq (,$(strip $(gpl2lgpl)))
1560 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1561 # Snarf from the master source and frob the copying notice.
1562 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1563         sed -f $^ > $@-tmp
1564 # So I don't edit them by mistake.
1565         chmod a-w $@-tmp
1566         mv -f $@-tmp $@
1567 endif
1568 endif
1569
1570 # Local Variables:
1571 # mode: makefile
1572 # End: