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