Makeconfig

   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 #       Makefile configuration options for the GNU C library.
  20 #
  21 ifneq (,)
  22 This makefile requires GNU Make.
  23 endif
  24
  25 all: # Make this the default goal
  26
  27 ifneq "$(origin +included-Makeconfig)" "file"
  28
  29 +included-Makeconfig := yes
  30
  31 ifdef subdir
  32 .. := ../
  33 endif
  34
  35 # $(common-objdir) is the place to put objects and
  36 # such that are not specific to a single subdir.
  37 ifdef objdir
  38 objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/)
  39 common-objpfx = $(objdir)/
  40 common-objdir = $(objdir)
  41 else
  42 objdir must be defined by the build-directory Makefile.
  43 endif
  44
  45 # Root of the sysdeps tree.
  46 sysdep_dir := $(..)sysdeps
  47 export sysdep_dir := $(sysdep_dir)
  48
  49 # Get the values defined by options to `configure'.
  50 include $(common-objpfx)config.make
  51
  52 # What flags to give to sources which call user provided callbacks
  53 uses-callbacks = -fexceptions
  54
  55 # What flags to give to tests which test stack alignment
  56 stack-align-test-flags =
  57
  58 # Complete path to sysdep dirs.
  59 # `configure' writes a definition of `config-sysdirs' in `config.make'.
  60 sysdirs := $(foreach D,$(config-sysdirs),$(firstword $(filter /%,$D) $(..)$D))
  61
  62 # Add-ons that contribute sysdeps trees get added to the include list
  63 # after sysdeps/generic.  This makes #include <sysdeps/...> work right
  64 # to find specific add-on files without assuming the add-on directory name.
  65 # It also means that headers can go into an add-on's base directory
  66 # instead of the add-on needing a sysdeps/generic of its own.
  67 sysdeps-srcdirs := $(foreach add-on,$(sysdeps-add-ons),\
  68                              $(firstword $(filter /%,$(add-on)) \
  69                                          $(..)$(add-on)))
  70 +sysdep_dirs = $(sysdirs) $(sysdeps-srcdirs)
  71 ifdef objdir
  72 +sysdep_dirs := $(objdir) $(+sysdep_dirs)
  73 endif
  74
  75 # Run config.status to update config.make and config.h.  We don't show the
  76 # dependence of config.h to Make, because it is only touched when it
  77 # changes and so config.status would be run every time; the dependence of
  78 # config.make should suffice to force regeneration and re-exec, and the new
  79 # image will notice if config.h changed.
  80 $(common-objpfx)config.make: $(common-objpfx)config.status \
  81                              $(..)config.make.in $(..)config.h.in
  82         cd $(<D); $(SHELL) $(<F)
  83
  84 # Find all the add-on and sysdeps configure fragments, to make sure we
  85 # re-run configure when any of them changes.
  86 $(common-objpfx)config.status: $(..)version.h $(..)configure \
  87                                $(foreach dir,$(sysdirs),\
  88                                          $(wildcard $(dir)/Implies) \
  89                                          $(patsubst %.ac,%,\
  90                                                     $(firstword $(wildcard \
  91  $(addprefix $(dir)/,configure configure.ac))))) \
  92                                $(patsubst %.ac,%,\
  93  $(wildcard $(..)sysdeps/*/preconfigure $(..)sysdeps/*/preconfigure.ac)) \
  94                                $(patsubst %.ac,%,\
  95                                           $(foreach add-on,$(add-ons),\
  96                                                     $(firstword $(wildcard \
  97  $(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\
  98              configure configure.ac))) \
  99  $(wildcard $(addprefix $(firstword $(filter /%,$(add-on)) $(..)$(add-on))/,\
 100                         sysdeps/*/preconfigure sysdeps/*/preconfigure.ac))))
 101         @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
 102          echo The GNU C library has not been configured. >&2; \
 103          echo Run \`configure\' to configure it before building. >&2; \
 104          echo Try \`configure --help\' for more details. >&2; \
 105          exit 1; fi
 106
 107 # We don't want CPPFLAGS to be exported to the command running configure.
 108 unexport CPPFLAGS
 109
 110 # Get the user's configuration parameters.
 111 ifneq ($(wildcard $(..)configparms),)
 112 include $(..)configparms
 113 endif
 114 ifneq ($(objpfx),)
 115 ifneq ($(wildcard $(common-objpfx)configparms),)
 116 include $(common-objpfx)configparms
 117 endif
 118 endif
 119 \f
 120 ####
 121 ####    These are the configuration variables.  You can define values for
 122 ####    the variables below in the file `configparms'.
 123 ####    Do NOT edit this file.
 124 ####
 125
 126
 127 # Common prefix for machine-independent installation directories.
 128 ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
 129 prefix = /usr/local
 130 endif
 131
 132 # Decide whether we shall build the programs or not.  We always do this
 133 # unless the user tells us (in configparms) or we are building for a
 134 # standalone target.
 135 ifndef build-programs
 136 ifneq ($(config-os),none)
 137 build-programs=yes
 138 else
 139 build-programs=no
 140 endif
 141 endif
 142
 143 # Common prefix for machine-dependent installation directories.
 144 ifeq ($(origin exec_prefix),undefined)
 145 exec_prefix = $(prefix)
 146 endif
 147
 148 # Where to install the library and object files.
 149 ifndef libdir
 150 libdir = $(exec_prefix)/lib
 151 endif
 152 inst_libdir = $(install_root)$(libdir)
 153
 154 # Where to install the shared library.
 155 ifndef slibdir
 156 slibdir = $(exec_prefix)/lib
 157 endif
 158 inst_slibdir = $(install_root)$(slibdir)
 159
 160 # Where to install the dynamic linker.
 161 ifndef rtlddir
 162 rtlddir = $(slibdir)
 163 endif
 164 inst_rtlddir = $(install_root)$(rtlddir)
 165
 166 # Prefix to put on files installed in $(libdir).  For libraries `libNAME.a',
 167 # the prefix is spliced between `lib' and the name, so the linker switch
 168 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
 169 # just prepended to the whole file name.
 170 ifeq ($(origin libprefix),undefined)
 171 libprefix =
 172 endif
 173
 174 # Where to install the header files.
 175 ifndef includedir
 176 includedir = $(prefix)/include
 177 endif
 178 inst_includedir = $(install_root)$(includedir)
 179
 180 # Where to install machine-independent data files.
 181 # These are the timezone database, and the locale database.
 182 ifndef datadir
 183 datadir = $(prefix)/share
 184 endif
 185 inst_datadir = $(install_root)$(datadir)
 186
 187 # Where to install the timezone data files (which are machine-independent).
 188 ifndef zonedir
 189 zonedir = $(datadir)/zoneinfo
 190 endif
 191 inst_zonedir = $(install_root)$(zonedir)
 192
 193 # Where to install the compiled binary locale archive and compiled
 194 # binary locale files.
 195 ifndef complocaledir
 196 complocaledir = $(libdir)/locale
 197 endif
 198 inst_complocaledir = $(install_root)$(complocaledir)
 199
 200 # Where to install the message catalog data files (which are
 201 # machine-independent).
 202 ifndef localedir
 203 localedir = $(datadir)/locale
 204 endif
 205 inst_localedir = $(install_root)$(localedir)
 206
 207 # Where to install the locale charmap source files.
 208 ifndef i18ndir
 209 i18ndir = $(datadir)/i18n
 210 endif
 211 inst_i18ndir = $(install_root)$(i18ndir)
 212
 213 # Where to install the shared object for charset transformation.
 214 ifndef gconvdir
 215 gconvdir = $(libdir)/gconv
 216 endif
 217 inst_gconvdir = $(install_root)$(gconvdir)
 218
 219 # Where to install programs.
 220 ifndef bindir
 221 bindir = $(exec_prefix)/bin
 222 endif
 223 inst_bindir = $(install_root)$(bindir)
 224
 225 # Where to install internal programs.
 226 ifndef libexecdir
 227 libexecdir = $(exec_prefix)/libexec
 228 endif
 229 inst_libexecdir = $(install_root)$(libexecdir)
 230
 231 # Where to install administrative programs.
 232 ifndef rootsbindir
 233 rootsbindir = $(exec_prefix)/sbin
 234 endif
 235 inst_rootsbindir = $(install_root)$(rootsbindir)
 236
 237 ifndef sbindir
 238 sbindir = $(exec_prefix)/sbin
 239 endif
 240 inst_sbindir = $(install_root)$(sbindir)
 241
 242 # Where to install the Info files.
 243 ifndef infodir
 244 infodir = $(prefix)/info
 245 endif
 246 inst_infodir = $(install_root)$(infodir)
 247
 248 # Where to install audit libraries.
 249 ifndef auditdir
 250 auditdir = $(libdir)/audit
 251 endif
 252 inst_auditdir = $(install_root)$(auditdir)
 253
 254 # Where to install default configuration files.  These include the local
 255 # timezone specification and network data base files.
 256 ifndef sysconfdir
 257 sysconfdir = $(prefix)/etc
 258 endif
 259 inst_sysconfdir = $(install_root)$(sysconfdir)
 260
 261 # Directory for the database files and Makefile for nss_db.
 262 ifndef vardbdir
 263 vardbdir = $(localstatedir)/db
 264 endif
 265 inst_vardbdir = $(install_root)$(vardbdir)
 266
 267 # Where to install the "localtime" timezone file; this is the file whose
 268 # contents $(localtime) specifies.  If this is a relative pathname, it is
 269 # relative to $(zonedir).  It is a good idea to put this somewhere
 270 # other than there, so the zoneinfo directory contains only universal data,
 271 # localizing the configuration data elsewhere.
 272 ifndef localtime-file
 273 localtime-file = $(sysconfdir)/localtime
 274 endif
 275
 276 # What to use for leap second specifications in compiling the default
 277 # timezone files.  Set this to `/dev/null' for no leap second handling as
 278 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
 279 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
 280 # This variable determines the default: if it's `/dev/null',
 281 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
 282 ifndef leapseconds
 283 leapseconds = /dev/null
 284 endif
 285
 286 # What timezone's DST rules should be used when a POSIX-style TZ
 287 # environment variable doesn't specify any rules.  For 1003.1 compliance
 288 # this timezone must use rules that are as U.S. federal law defines DST.
 289 # Run `make -C time echo-zonenames' to see a list of available zone names.
 290 # This setting can be changed with `zic -p TIMEZONE' at any time.
 291 # If you want POSIX.1 compatibility, use `America/New_York'.
 292 ifndef posixrules
 293 posixrules = America/New_York
 294 endif
 295
 296 # Where to install the "posixrules" timezone file; this is file
 297 # whose contents $(posixrules) specifies.  If this is a relative
 298 # pathname, it is relative to $(zonedir).
 299 ifndef posixrules-file
 300 posixrules-file = posixrules
 301 endif
 302
 303
 304 # Directory where your system's native header files live.
 305 # This is used on Unix systems to generate some GNU libc header files.
 306 ifndef sysincludedir
 307 sysincludedir = /usr/include
 308 endif
 309
 310
 311 # Commands to install files.
 312 ifndef INSTALL_DATA
 313 INSTALL_DATA = $(INSTALL) -m 644
 314 endif
 315 ifndef INSTALL_SCRIPT
 316 INSTALL_SCRIPT = $(INSTALL)
 317 endif
 318 ifndef INSTALL_PROGRAM
 319 INSTALL_PROGRAM = $(INSTALL)
 320 endif
 321 ifndef INSTALL
 322 INSTALL = install
 323 endif
 324
 325
 326 # The name of the C compiler.
 327 # If you've got GCC, and it works, use it.
 328 ifeq ($(origin CC),default)
 329 CC := gcc
 330 endif
 331
 332 # The name of the C compiler to use for compilations of programs to run on
 333 # the host that is building the library.  If you set CC to a
 334 # cross-compiler, you must set this to the normal compiler.
 335 ifndef BUILD_CC
 336 BUILD_CC = $(CC)
 337 endif
 338
 339 # Default flags to pass the C compiler.
 340 ifndef default_cflags
 341 ifeq ($(release),stable)
 342 default_cflags := -g -O2
 343 else
 344 default_cflags := -g -O
 345 endif
 346 endif
 347
 348 # Flags to pass the C compiler when assembling preprocessed assembly code
 349 # (`.S' files).
 350 ifndef asm-CPPFLAGS
 351 asm-CPPFLAGS =
 352 endif
 353
 354 as-needed := -Wl,--as-needed
 355 no-as-needed := -Wl,--no-as-needed
 356
 357 # Must be supported by the linker.
 358 no-whole-archive = -Wl,--no-whole-archive
 359 whole-archive = -Wl,--whole-archive
 360
 361 # Installed name of the startup code.
 362 # The ELF convention is that the startfile is called crt1.o
 363 start-installed-name = crt1.o
 364 # On systems that do not need a special startfile for statically linked
 365 # binaries, simply set it to the normal name.
 366 ifndef static-start-installed-name
 367 static-start-installed-name = $(start-installed-name)
 368 endif
 369
 370 ifeq (yesyes,$(build-shared)$(have-z-combreloc))
 371 combreloc-LDFLAGS = -Wl,-z,combreloc
 372 LDFLAGS.so += $(combreloc-LDFLAGS)
 373 LDFLAGS-rtld += $(combreloc-LDFLAGS)
 374 endif
 375
 376 relro-LDFLAGS = -Wl,-z,relro
 377 LDFLAGS.so += $(relro-LDFLAGS)
 378 LDFLAGS-rtld += $(relro-LDFLAGS)
 379
 380 ifeq (yes,$(have-hash-style))
 381 # For the time being we unconditionally use 'both'.  At some time we
 382 # should declare statically linked code as 'out of luck' and compile
 383 # with --hash-style=gnu only.
 384 hashstyle-LDFLAGS = -Wl,--hash-style=both
 385 LDFLAGS.so += $(hashstyle-LDFLAGS)
 386 LDFLAGS-rtld += $(hashstyle-LDFLAGS)
 387 endif
 388
 389 # Command to run after every final link (executable or shared object).
 390 # This is invoked with $(call after-link,...), so it should operate on
 391 # the file $1.  This can be set to do some sort of post-processing on
 392 # binaries, or to perform some sort of static sanity check.
 393 ifndef after-link
 394 after-link =
 395 endif
 396
 397 # Command for linking PIE programs with the C library.
 398 ifndef +link-pie
 399 +link-pie-before-libc = $(CC) -pie -Wl,-O1 -nostdlib -nostartfiles -o $@ \
 400              $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
 401              $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
 402              $(addprefix $(csu-objpfx),S$(start-installed-name)) \
 403              $(+preinit) $(+prectorS) \
 404              $(filter-out $(addprefix $(csu-objpfx),start.o \
 405                                                     S$(start-installed-name))\
 406                           $(+preinit) $(link-extra-libs) \
 407                           $(common-objpfx)libc% $(+postinit),$^) \
 408              $(link-extra-libs)
 409 +link-pie-after-libc = $(+postctorS) $(+postinit)
 410 define +link-pie
 411 $(+link-pie-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-pie-after-libc)
 412 $(call after-link,$@)
 413 endef
 414 define +link-pie-tests
 415 $(+link-pie-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
 416                          $(+link-pie-after-libc)
 417 $(call after-link,$@)
 418 endef
 419 define +link-pie-printers-tests
 420 $(+link-pie-before-libc) $(built-rtld-LDFLAGS) $(link-libc-printers-tests) \
 421                          $(+link-pie-after-libc)
 422 $(call after-link,$@)
 423 endef
 424 endif
 425 # Command for statically linking programs with the C library.
 426 ifndef +link-static
 427 +link-static-before-libc = $(CC) -nostdlib -nostartfiles -static -o $@ \
 428               $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F))  \
 429               $(addprefix $(csu-objpfx),$(static-start-installed-name)) \
 430               $(+preinit) $(+prectorT) \
 431               $(filter-out $(addprefix $(csu-objpfx),start.o \
 432                                                      $(start-installed-name))\
 433                            $(+preinit) $(link-extra-libs-static) \
 434                            $(common-objpfx)libc% $(+postinit),$^) \
 435               $(link-extra-libs-static)
 436 +link-static-after-libc = $(+postctorT) $(+postinit)
 437 define +link-static
 438 $(+link-static-before-libc) $(link-libc-static) $(+link-static-after-libc)
 439 $(call after-link,$@)
 440 endef
 441 define +link-static-tests
 442 $(+link-static-before-libc) $(link-libc-static-tests) $(+link-static-after-libc)
 443 $(call after-link,$@)
 444 endef
 445 endif
 446 # Commands for linking programs with the C library.
 447 ifndef +link
 448 ifeq (yes,$(build-shared))
 449 ifeq (yes,$(build-pie-default))
 450 no-pie-ldflag = -no-pie
 451 +link = $(+link-pie)
 452 +link-tests = $(+link-pie-tests)
 453 +link-printers-tests = $(+link-pie-printers-tests)
 454 else  # not build-pie-default
 455 +link-before-libc = $(CC) -nostdlib -nostartfiles -o $@ \
 456               $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
 457               $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
 458               $(addprefix $(csu-objpfx),$(start-installed-name)) \
 459               $(+preinit) $(+prector) \
 460               $(filter-out $(addprefix $(csu-objpfx),start.o \
 461                                                      $(start-installed-name))\
 462                            $(+preinit) $(link-extra-libs) \
 463                            $(common-objpfx)libc% $(+postinit),$^) \
 464               $(link-extra-libs)
 465 +link-after-libc = $(+postctor) $(+postinit)
 466 define +link
 467 $(+link-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-after-libc)
 468 $(call after-link,$@)
 469 endef
 470 define +link-tests
 471 $(+link-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
 472                      $(+link-after-libc)
 473 $(call after-link,$@)
 474 endef
 475 define +link-printers-tests
 476 $(+link-before-libc) $(built-rtld-LDFLAGS) $(link-libc-printers-tests) \
 477                      $(+link-after-libc)
 478 $(call after-link,$@)
 479 endef
 480 endif  # build-pie-default
 481 else  # build-static
 482 +link = $(+link-static)
 483 +link-tests = $(+link-static-tests)
 484 +link-printers-tests = $(+link-static-tests)
 485 endif  # build-shared
 486 endif  # +link
 487
 488 # The pretty printer test programs need to be compiled without optimizations
 489 # so they won't confuse gdb.  We could use either the 'GCC optimize' pragma
 490 # or the 'optimize' function attribute to achieve this; however, at least on
 491 # ARM, gcc always produces different debugging symbols when invoked with
 492 # a -O greater than 0 than when invoked with -O0, regardless of anything else
 493 # we're using to suppress optimizations.  Therefore, we need to explicitly pass
 494 # -O0 to it through CFLAGS.
 495 # Additionally, the build system will try to -include $(common-objpfx)/config.h
 496 # when compiling the tests, which will throw an error if some special macros
 497 # (such as __OPTIMIZE__ and IS_IN_build) aren't defined.  To avoid this, we
 498 # tell gcc to define IS_IN_build.
 499 CFLAGS-printers-tests := -O0 -ggdb3 -DIS_IN_build
 500
 501 ifeq (yes,$(build-shared))
 502 # These indicate whether to link using the built ld.so or the installed one.
 503 installed-rtld-LDFLAGS = -Wl,-dynamic-linker=$(rtlddir)/$(rtld-installed-name)
 504 built-rtld-LDFLAGS = -Wl,-dynamic-linker=$(elf-objpfx)ld.so
 505
 506 ifndef rtld-LDFLAGS
 507 rtld-LDFLAGS = $(installed-rtld-LDFLAGS)
 508 endif
 509
 510 ifndef rtld-tests-LDFLAGS
 511 ifeq (yes,$(build-hardcoded-path-in-tests))
 512 rtld-tests-LDFLAGS = $(built-rtld-LDFLAGS)
 513 else
 514 rtld-tests-LDFLAGS = $(installed-rtld-LDFLAGS)
 515 endif  # build-hardcoded-path-in-tests
 516 endif  # rtld-tests-LDFLAGS
 517
 518 endif  # build-shared
 519
 520 ifndef link-libc
 521 ifeq (yes,$(build-shared))
 522 # We need the versioned name of libc.so in the deps of $(others) et al
 523 # so that the symlink to libc.so is created before anything tries to
 524 # run the linked programs.
 525 link-libc-rpath = -Wl,-rpath=$(rpath-link)
 526 link-libc-rpath-link = -Wl,-rpath-link=$(rpath-link)
 527
 528 ifeq (yes,$(build-hardcoded-path-in-tests))
 529 link-libc-tests-rpath-link = $(link-libc-rpath)
 530 else
 531 link-libc-tests-rpath-link = $(link-libc-rpath-link)
 532 endif  # build-hardcoded-path-in-tests
 533
 534 link-libc-before-gnulib = $(common-objpfx)libc.so$(libc.so-version) \
 535                           $(common-objpfx)$(patsubst %,$(libtype.oS),c) \
 536                           $(as-needed) $(elf-objpfx)ld.so \
 537                           $(no-as-needed)
 538 link-libc = $(link-libc-rpath-link) $(link-libc-before-gnulib) $(gnulib)
 539
 540 link-libc-tests-after-rpath-link = $(link-libc-before-gnulib) $(gnulib-tests)
 541 link-libc-tests = $(link-libc-tests-rpath-link) \
 542                   $(link-libc-tests-after-rpath-link)
 543 # Pretty printer test programs always require rpath instead of rpath-link.
 544 link-libc-printers-tests = $(link-libc-rpath) \
 545                            $(link-libc-tests-after-rpath-link)
 546
 547 # This is how to find at build-time things that will be installed there.
 548 rpath-dirs = math elf dlfcn nss nis rt resolv crypt mathvec
 549 rpath-link = \
 550 $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
 551 else  # build-static
 552 link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
 553 link-libc-tests = $(common-objpfx)libc.a $(otherlibs) $(gnulib-tests) $(common-objpfx)libc.a $(gnulib-tests)
 554 endif  # build-shared
 555 endif  # link-libc
 556
 557 # Differences in the linkers on the various platforms.
 558 LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
 559 LDFLAGS-soname-fname = -Wl,-soname,$(@F)
 560 LDFLAGS-rdynamic = -rdynamic
 561 LDFLAGS-Bsymbolic = -Bsymbolic
 562
 563 # Choose the default search path for the dynamic linker based on
 564 # where we will install libraries.
 565 ifneq ($(libdir),$(slibdir))
 566 default-rpath = $(slibdir):$(libdir)
 567 else
 568 default-rpath = $(libdir)
 569 endif
 570
 571 ifndef link-extra-libs
 572 link-extra-libs = $(LDLIBS-$(@F))
 573 link-extra-libs-static = $(link-extra-libs)
 574 endif
 575
 576 # The static libraries.
 577 link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group
 578 link-libc-static-tests = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib-tests) -Wl,--end-group
 579
 580 # How to link against libgcc.  Some libgcc functions, such as those
 581 # for "long long" arithmetic or software floating point, can always be
 582 # built without use of C library headers and do not have any global
 583 # state so can safely be linked statically into any executable or
 584 # shared library requiring them; these functions are in libgcc.a.
 585 # Other functions, relating to exception handling, may require C
 586 # library headers to build and it may not be safe to have more than
 587 # one copy of them in a process; these functions are only in
 588 # libgcc_s.so and libgcc_eh.a.
 589 #
 590 # To avoid circular dependencies when bootstrapping, it is desirable
 591 # to avoid use of libgcc_s and libgcc_eh in building glibc.  Where any
 592 # glibc functionality (in particular, thread cancellation) requires
 593 # exception handling, this is implemented through dlopen of libgcc_s
 594 # to avoid unnecessary dependencies on libgcc_s by programs not using
 595 # that functionality; executables built with glibc do not use
 596 # exception handling other than through thread cancellation.
 597 #
 598 # Undefined references to functions from libgcc_eh or libgcc_s may
 599 # arise for code built with -fexceptions.  In the case of statically
 600 # linked programs installed by glibc, unwinding will never actually
 601 # occur at runtime and the use of elf/static-stubs.c to resolve these
 602 # references is safe.  In the case of statically linked test programs
 603 # and test programs built with -fexceptions, unwinding may occur in
 604 # some cases and it is preferable to link with libgcc_eh or libgcc_s
 605 # so that the testing is as similar as possible to how programs will
 606 # be built with the installed glibc.
 607 #
 608 # Some architectures have architecture-specific systems for exception
 609 # handling that may involve undefined references to
 610 # architecture-specific functions.  On those architectures,
 611 # gnulib-arch and static-gnulib-arch may be defined in sysdeps
 612 # makefiles to use additional libraries for linking executables and
 613 # shared libraries built by glibc.
 614 ifndef gnulib
 615 ifneq ($(have-cc-with-libunwind),yes)
 616   libunwind =
 617 else
 618   libunwind = -lunwind
 619 endif
 620 libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed
 621 gnulib-arch =
 622 gnulib = -lgcc $(gnulib-arch)
 623 gnulib-tests := -lgcc $(libgcc_eh)
 624 static-gnulib-arch =
 625 # By default, elf/static-stubs.o, instead of -lgcc_eh, is used to
 626 # statically link programs.  When --disable-shared is used, we use
 627 # -lgcc_eh since elf/static-stubs.o isn't sufficient.
 628 ifeq (yes,$(build-shared))
 629 static-gnulib = -lgcc $(static-gnulib-arch)
 630 else
 631 static-gnulib = -lgcc -lgcc_eh $(static-gnulib-arch)
 632 endif
 633 static-gnulib-tests := -lgcc -lgcc_eh $(libunwind)
 634 libc.so-gnulib := -lgcc
 635 endif
 636 +preinit = $(addprefix $(csu-objpfx),crti.o)
 637 +postinit = $(addprefix $(csu-objpfx),crtn.o)
 638 +prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o`
 639 +postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
 640 # Variants of the two previous definitions for linking PIE programs.
 641 +prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o`
 642 +postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o`
 643 # Variants of the two previous definitions for statically linking programs.
 644 +prectorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o`
 645 +postctorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
 646 csu-objpfx = $(common-objpfx)csu/
 647 elf-objpfx = $(common-objpfx)elf/
 648
 649 # A command that, prepended to the name and arguments of a program,
 650 # and run on the build system, causes that program with those
 651 # arguments to be run on the host for which the library is built.
 652 ifndef test-wrapper
 653 test-wrapper =
 654 endif
 655 # Likewise, but the name of the program is preceded by
 656 # <variable>=<value> assignments for environment variables.
 657 ifndef test-wrapper-env
 658 test-wrapper-env = $(test-wrapper) env
 659 endif
 660 # Likewise, but the program's environment will be empty except for any
 661 # explicit <variable>=<value> assignments preceding the program name.
 662 ifndef test-wrapper-env-only
 663 test-wrapper-env-only = $(test-wrapper) env -i
 664 endif
 665
 666 # Whether to run test programs built for the library's host system.
 667 ifndef run-built-tests
 668 ifeq (yes|,$(cross-compiling)|$(test-wrapper))
 669 run-built-tests = no
 670 else
 671 run-built-tests = yes
 672 endif
 673 endif
 674
 675 # Whether to stop immediately when a test fails.  Nonempty means to
 676 # stop, empty means not to stop.
 677 ifndef stop-on-test-failure
 678 stop-on-test-failure =
 679 endif
 680
 681 # How to run a program we just linked with our library.
 682 # The program binary is assumed to be $(word 2,$^).
 683 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
 684 rtld-prefix = $(elf-objpfx)$(rtld-installed-name)                             \
 685               --library-path                                                  \
 686               $(rpath-link)$(patsubst %,:%,$(sysdep-library-path))
 687 ifeq (yes,$(build-shared))
 688 comma = ,
 689 sysdep-library-path = \
 690 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
 691                                        $(filter -Wl$(comma)-rpath-link=%,\
 692                                                 $(sysdep-LDFLAGS)))))
 693 # $(run-via-rtld-prefix) is a command that, when prepended to the name
 694 # of a program built with the newly built library, produces a command
 695 # that, executed on the host for which the library is built, runs that
 696 # program.  For tests listed in tests-static or xtests-static, it is
 697 # empty.
 698 run-via-rtld-prefix =                                                         \
 699   $(if $(strip $(filter $(notdir $(built-program-file)),                      \
 700                         $(tests-static) $(xtests-static))),, $(rtld-prefix))
 701 else
 702 run-via-rtld-prefix =
 703 endif
 704 # $(run-program-env) is the default environment variable settings to
 705 # use when running a program built with the newly built library.
 706 run-program-env = GCONV_PATH=$(common-objpfx)iconvdata \
 707                   LOCPATH=$(common-objpfx)localedata LC_ALL=C
 708 # $(run-program-prefix) is a command that, when prepended to the name
 709 # of a program built with the newly built library, produces a command
 710 # that, executed on the build system on which "make" is run, runs that
 711 # program.  $(run-program-prefix-before-env) and
 712 # $(run-program-prefix-after-env) are similar, but separate parts
 713 # before and after a list of environment variables.
 714 run-program-prefix-before-env = $(test-wrapper-env)
 715 run-program-prefix-after-env = $(run-via-rtld-prefix)
 716 run-program-prefix = $(run-program-prefix-before-env) $(run-program-env) \
 717                      $(run-program-prefix-after-env)
 718 # $(built-program-cmd) is a command that, executed on the build system
 719 # on which "make" is run, runs the newly built program that is the
 720 # second dependency of the makefile target in which
 721 # $(built-program-cmd) is used.  $(built-program-cmd-before-env) and
 722 # $(built-program-cmd-after-env) are similar, before and after a list
 723 # of environment variables.
 724 built-program-cmd-before-env = $(test-wrapper-env)
 725 built-program-cmd-after-env = $(run-via-rtld-prefix) $(built-program-file)
 726 built-program-cmd = $(built-program-cmd-before-env) $(run-program-env) \
 727                     $(built-program-cmd-after-env)
 728 # $(host-built-program-cmd) is a command that, executed on the host
 729 # for which the library is built, runs the newly built program that is
 730 # the second dependency of the makefile target in which
 731 # $(host-built-program-cmd) is used.
 732 host-built-program-cmd = $(run-via-rtld-prefix) $(built-program-file)
 733
 734 ifndef LD
 735 LD := ld -X
 736 endif
 737
 738 # $(test-via-rtld-prefix) is a command that, when prepended to the name
 739 # of a test program built with the newly built library, produces a command
 740 # that, executed on the host for which the library is built, runs that
 741 # program.  For tests listed in tests-static or xtests-static as well
 742 # as when test programs are hardcoded to the newly built libraries, it
 743 # is empty.
 744
 745 # $(test-program-prefix) is a command that, when prepended to the name
 746 # of a test program built with the newly built library, produces a command
 747 # that, executed on the build system on which "make" is run, runs that
 748 # test program.  $(test-program-prefix-before-env) and
 749 # $(test-program-prefix-after-env) are similar, before and after a
 750 # list of environment variables.
 751
 752 # $(test-program-cmd) is a command that, executed on the build system
 753 # on which "make" is run, runs the newly built test program that is the
 754 # second dependency of the makefile target in which
 755 # $(test-program-cmd) is used.  $(test-program-cmd-before-env) and
 756 # $(test-program-cmd-after-env) are similar, before and after a list
 757 # of environment variables.
 758
 759 # $(host-test-program-cmd) is a command that, executed on the host
 760 # for which the library is built, runs the newly built test program that
 761 # is the second dependency of the makefile target in which
 762 # $(host-test-program-cmd) is used.
 763
 764 ifeq (yes,$(build-hardcoded-path-in-tests))
 765 test-via-rtld-prefix =
 766 test-program-prefix-before-env = $(test-wrapper-env)
 767 test-program-prefix-after-env =
 768 test-program-prefix = $(test-program-prefix-before-env) $(run-program-env) \
 769                       $(test-program-prefix-after-env)
 770 test-program-cmd-before-env = $(test-wrapper-env)
 771 test-program-cmd-after-env = $(built-program-file)
 772 test-program-cmd = $(test-program-cmd-before-env) $(run-program-env) \
 773                    $(test-program-cmd-after-env)
 774 host-test-program-cmd = $(built-program-file)
 775 else
 776 test-via-rtld-prefix = $(run-via-rtld-prefix)
 777 test-program-prefix-before-env = $(run-program-prefix-before-env)
 778 test-program-prefix-after-env = $(run-program-prefix-after-env)
 779 test-program-prefix = $(run-program-prefix)
 780 test-program-cmd-before-env = $(built-program-cmd-before-env)
 781 test-program-cmd-after-env = $(built-program-cmd-after-env)
 782 test-program-cmd = $(built-program-cmd)
 783 host-test-program-cmd = $(host-built-program-cmd)
 784 endif
 785
 786 # Extra flags to pass to GCC.
 787 ifeq ($(all-warnings),yes)
 788 +gccwarn := -Wall -Wwrite-strings -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar
 789 else
 790 +gccwarn := -Wall -Wwrite-strings
 791 endif
 792 +gccwarn += -Wundef
 793 ifeq ($(enable-werror),yes)
 794 +gccwarn += -Werror
 795 endif
 796 +gccwarn-c = -Wstrict-prototypes -Wold-style-definition
 797
 798 # We do not depend on the address of constants in different files to be
 799 # actually different, so allow the compiler to merge them all.
 800 +merge-constants = -fmerge-all-constants
 801
 802 # We have to assume that glibc functions are called in any rounding
 803 # mode and also change the rounding mode in a few functions. So,
 804 # disable any optimization that assume default rounding mode.
 805 +math-flags = -frounding-math
 806
 807 # This is the program that generates makefile dependencies from C source files.
 808 # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
 809 # targets for headers so that removed headers don't break the build.
 810 ifndef +mkdep
 811 +mkdep = $(CC) -M -MP
 812 endif
 813
 814 # The program that makes Emacs-style TAGS files.
 815 ETAGS   := etags
 816
 817 # The `xgettext' program for producing .pot files from sources.
 818 ifndef XGETTEXT
 819 XGETTEXT = xgettext
 820 endif
 821
 822 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
 823 # perhaps others) to preprocess assembly code in some cases.
 824 M4 = m4
 825
 826 # To force installation of files even if they are older than the
 827 # installed files.  This variable is included in the dependency list
 828 # of all installation targets.
 829 ifeq ($(force-install),yes)
 830 +force = force-install
 831 else
 832 +force =
 833 endif
 834
 835 ####
 836 #### End of configuration variables.
 837 ####
 838 \f
 839 # This tells some versions of GNU make before 3.63 not to export all variables.
 840 .NOEXPORT:
 841
 842 # We want to echo the commands we're running without
 843 # umpteen zillion filenames along with it (we use `...' instead)
 844 # but we don't want this echoing done when the user has said
 845 # he doesn't want to see commands echoed by using -s.
 846 ifneq   "$(findstring s,$(MAKEFLAGS))" ""       # if -s
 847 +cmdecho        := echo >/dev/null
 848 else                                            # not -s
 849 +cmdecho        := echo
 850 endif                                           # -s
 851
 852 # These are the flags given to the compiler to tell
 853 # it what sort of optimization and/or debugging output to do.
 854 ifndef  +cflags
 855 # If `CFLAGS' was defined, use that.
 856 ifdef           CFLAGS
 857 +cflags := $(filter-out -I%,$(CFLAGS))
 858 endif           # CFLAGS
 859 endif   # +cflags
 860
 861 # If none of the above worked, default to "-g -O".
 862 ifeq    "$(strip $(+cflags))" ""
 863 +cflags := $(default_cflags)
 864 endif   # $(+cflags) == ""
 865
 866 +cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags)
 867 +gcc-nowarn := -w
 868
 869 # Don't duplicate options if we inherited variables from the parent.
 870 +cflags := $(sort $(+cflags))
 871
 872 # Each sysdeps directory can contain header files that both will be
 873 # used to compile and will be installed.  Each can also contain an
 874 # include/ subdirectory, whose header files will be used to compile
 875 # but will not be installed, and will take precedence over the
 876 # installed files.  This mirrors the top-level include/ subdirectory.
 877 +sysdep-includes := $(foreach dir,$(+sysdep_dirs),\
 878                               $(addprefix -I,$(wildcard $(dir)/include) $(dir)))
 879
 880 # These are flags given to the C compiler to tell it to look for
 881 # include files (including ones given in angle brackets) in the parent
 882 # library source directory, in the include directory, and in the
 883 # current directory.
 884 +includes = -I$(..)include $(if $(subdir),$(objpfx:%/=-I%)) \
 885             $(+sysdep-includes) $(includes) \
 886             $(patsubst %/,-I%,$(..)) $(libio-include) -I. $(sysincludes)
 887
 888 # Since libio has several internal header files, we use a -I instead
 889 # of many little headers in the include directory.
 890 libio-include = -I$(..)libio
 891
 892 # List of non-library modules that we build.
 893 built-modules = iconvprogs iconvdata ldconfig lddlibc4 libmemusage \
 894                 libSegFault libpcprofile librpcsvc locale-programs \
 895                 memusagestat nonlib nscd extramodules libnldbl
 896
 897 in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \
 898                                     $(libof-$(<F)) \
 899                                     $(libof-$(@F)) \
 900                                     libc))
 901
 902 # Build ld.so, libc.so and libpthread.so with -ftls-model=initial-exec
 903 tls-model = $(if $(filter libpthread rtld \
 904                           libc,$(in-module)),-ftls-model=initial-exec,)
 905
 906 module-cppflags-real = -include $(common-objpfx)libc-modules.h \
 907                        -DMODULE_NAME=$(in-module)
 908
 909 # We don't need libc-modules.h and the MODULE_NAME definition for .v.i
 910 # files.  These targets don't (and will likely never need to) use the IS_IN
 911 # facility.  In fact, shlib-versions should not use it because that will
 912 # create a circular dependency as libc-modules.h is generated from
 913 # shlib-versions.
 914 module-cppflags = $(if $(filter %.v.i,$(@F)),,$(module-cppflags-real))
 915
 916 # These are the variables that the implicit compilation rules use.
 917 # Note that we can't use -std=* in CPPFLAGS, because it overrides
 918 # the implicit -lang-asm and breaks cpp behavior for .S files--notably
 919 # it causes cpp to stop predefining __ASSEMBLER__.
 920 CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \
 921            $($(subdir)-CPPFLAGS) \
 922            $(+includes) $(defines) $(module-cppflags) \
 923            -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
 924            $(CPPFLAGS-$(suffix $@)) \
 925            $(foreach lib,$(libof-$(basename $(@F))) \
 926                          $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
 927            $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
 928 override CFLAGS = -std=gnu11 -fgnu89-inline $(config-extra-cflags) \
 929                   $(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \
 930                   $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \
 931                   $(CFLAGS-$(@F)) $(tls-model) \
 932                   $(foreach lib,$(libof-$(basename $(@F))) \
 933                                 $(libof-$(<F)) $(libof-$(@F)),$(CFLAGS-$(lib)))
 934 # Use our copies of cstdlib and cmath.
 935 override CXXFLAGS = -I$(common-objpfx) $(c++-sysincludes) \
 936                     $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
 937                     $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
 938
 939 # If everything is compiled with -fPIC (implicitly) we must tell this by
 940 # defining the PIC symbol.
 941 ifeq (yes,$(build-pic-default))
 942 pic-default = -DPIC
 943 endif
 944
 945 # Enable object files for different versions of the library.
 946 # Various things use $(object-suffixes) to know what all to make.
 947 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
 948 # to pass different flags for each flavor.
 949 libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
 950 # .op may be added to all-object-suffixes below.
 951 all-object-suffixes := .o .os .oS
 952 object-suffixes :=
 953 CPPFLAGS-.o = $(pic-default)
 954 CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
 955 libtype.o := lib%.a
 956 object-suffixes += .o
 957 ifeq (yes,$(build-shared))
 958 # Under --enable-shared, we will build a shared library of PIC objects.
 959 # The PIC object files are named foo.os.
 960 object-suffixes += .os
 961 CPPFLAGS-.os = -DPIC -DSHARED
 962 CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
 963 libtype.os := lib%_pic.a
 964 # This can be changed by a sysdep makefile
 965 pic-ccflag = -fPIC
 966 # This one should always stay like this unless there is a very good reason.
 967 PIC-ccflag = -fPIC
 968 endif
 969 # This can be changed by a sysdep makefile
 970 pie-ccflag = -fpie
 971 # This one should always stay like this unless there is a very good reason.
 972 PIE-ccflag = -fPIE
 973 ifeq (yes,$(build-profile))
 974 # Under --enable-profile, we will build a static library of profiled objects.
 975 # The profiled object files are named foo.op.
 976 all-object-suffixes += .op
 977 object-suffixes += .op
 978 CPPFLAGS-.op = -DPROF $(pic-default)
 979 CFLAGS-.op = -pg
 980 libtype.op = lib%_p.a
 981 endif
 982
 983 # Convenience variable for when we want to treat shared-library cases
 984 # differently from the rest.
 985 object-suffixes-noshared := $(filter-out .os,$(object-suffixes))
 986
 987 object-suffixes-for-libc := $(object-suffixes)
 988
 989 ifeq (yes,$(build-shared))
 990 # Build special library that contains the static-only routines for libc.
 991 object-suffixes-for-libc += .oS
 992
 993 # Must build the routines as PIC, though, because they can end up in (users')
 994 # shared objects.  We don't want to use CFLAGS-os because users may, for
 995 # example, make that processor-specific.
 996 CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag)
 997 CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1
 998 libtype.oS = lib%_nonshared.a
 999 endif
1000
1001 # The assembler can generate debug information too.
1002 ifndef ASFLAGS
1003 ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))
1004 endif
1005 ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)
1006
1007 ifndef BUILD_CC
1008 BUILD_CC = $(CC)
1009 endif
1010
1011 move-if-change = $(SHELL) $(..)scripts/move-if-change
1012 \f
1013 -include $(common-objpfx)sysd-sorted
1014 subdirs = $(sorted-subdirs)
1015 subdir-srcdirs = $(foreach dir,$(subdirs),\
1016                            $(firstword $($(dir)-srcdir) $(..)$(dir)))
1017
1018 # This is a pair of implicit rules to preprocess a file with # comments,
1019 # %ifdef et al, based on config.h settings or other %include'd files.
1020 # We use chained rules instead of a pipeline here so that we can properly
1021 # check the exit status of cpp rather than using its bad output when there
1022 # is a preprocessing error.  Another rule should depend on the output file
1023 # `FOO.v', and along with that `FOO.v.i' should be given dependencies
1024 # listing both its input files, and any header files that it may reference
1025 # (but no commands).
1026 %.v.i: $(common-objpfx)config.h $(..)Makeconfig
1027         sed '/^[        ]*%/!s/#.*$$//;/^[      ]*$$/d;s/^[     ]*%/#/' \
1028             $(filter-out FORCE %.h $(..)Makeconfig,$^) \
1029         | $(CC) -E -undef $(CPPFLAGS) -x assembler-with-cpp - \
1030                    > $@T
1031         mv -f $@T $@
1032 %.v: %.v.i
1033         sed '/^[        ]*#/d;/^[       ]*$$/d' $< > $@T
1034         mv -f $@T $@
1035
1036 ifeq (yes, $(build-shared))
1037
1038 # To generate a header to support more than one ABI for different
1039 # architecture variants, the CPU/Makefile defines abi-variants to be a
1040 # list of names for those variants (e.g. 32 64), and, for each variant,
1041 # defines abi-$(variant)-condition to be the condition for those options
1042 # to use in a C #if condition.  abi-includes may be defined to a list of
1043 # headers to include in the generated header, if the default does not
1044 # suffice.  default-abi is defined to be the ABI for the current glibc
1045 # build.
1046
1047 ifndef abi-includes
1048 abi-includes := bits/wordsize.h
1049 endif
1050
1051 # Process the shlib-versions file, which tells us what shared library
1052 # version numbers to use when we install shared objects on this system.
1053 # We need to wait until $(subdirs) is complete.
1054 ifeq ($(sysd-sorted-done),t)
1055 -include $(common-objpfx)soversions.mk
1056 ifndef avoid-generated
1057 # This lets add-ons give more-specific matches that override defaults
1058 # in the top-level file.
1059 $(common-objpfx)shlib-versions.v.i: \
1060         $(wildcard $(+sysdep_dirs:=/shlib-versions) \
1061                    $(subdir-srcdirs:=/shlib-versions)) \
1062         $(..)shlib-versions
1063
1064 $(common-objpfx)soversions.i: $(..)scripts/soversions.awk \
1065                               $(common-objpfx)shlib-versions.v
1066         $(AWK) -f $^ > $@T
1067         mv -f $@T $@
1068 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i $(..)Makeconfig
1069         (while read which lib number setname; do \
1070            eval seen_$$which=1; \
1071            test x"$$which" = xDEFAULT || continue; \
1072            case $$number in \
1073              [0-9]*) echo "$$lib.so-version=.$$number"; \
1074                      echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
1075              *)      echo "$$lib.so-version=$$number"; \
1076                      echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
1077            esac; \
1078          done; \
1079          echo soversions.mk-done = t;) < $< > $@T; exit 0
1080         mv -f $@T $@
1081 endif
1082 endif
1083
1084 postclean-generated += soversions.mk soversions.i \
1085                        shlib-versions.v shlib-versions.v.i
1086
1087 before-compile += $(common-objpfx)libc-modules.h
1088 ifeq ($(soversions.mk-done),t)
1089 # Generate a header with macro definitions for use with the IS_IN macro.
1090 # These are the possible values for the MODULE_NAME macro defined when building
1091 # sources, to identify which module the translation unit is going to be built
1092 # into.
1093 $(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @:
1094 $(common-objpfx)libc-modules.stmp: $(..)scripts/gen-libc-modules.awk \
1095                                    $(common-objpfx)soversions.i
1096         $(AWK) -v buildlist="$(subst -,_,$(built-modules))" -f $^ > ${@:stmp=T}
1097         $(move-if-change) ${@:stmp=T} ${@:stmp=h}
1098         touch $@
1099
1100 endif
1101
1102 common-generated += libc-modules.h libc-modules.stmp
1103
1104 # The name under which the run-time dynamic linker is installed.
1105 # We are currently going for the convention that `/lib/ld.so.1'
1106 # names the SVR4/ELF ABI-compliant dynamic linker.
1107 ifndef rtld-installed-name
1108 ifdef ld.so-version
1109 rtld-installed-name = $(ld.so-version)
1110 else
1111 rtld-installed-name = ld.so.1
1112 endif
1113 endif
1114
1115 ifndef rtld-version-installed-name
1116 rtld-version-installed-name = ld-$(version).so
1117 endif
1118
1119 endif # build-shared
1120
1121
1122 ifeq ($(build-shared),yes)
1123 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
1124 else
1125 libdl = $(common-objpfx)dlfcn/libdl.a
1126 endif
1127
1128 ifeq ($(build-shared),yes)
1129 libm = $(common-objpfx)math/libm.so$(libm.so-version)
1130 libmvec = $(common-objpfx)mathvec/libmvec.so$(libmvec.so-version)
1131 else
1132 libm = $(common-objpfx)math/libm.a
1133 libmvec = $(common-objpfx)mathvec/libmvec.a
1134 endif
1135
1136 # These are the subdirectories containing the library source.  The order
1137 # is more or less arbitrary.  The sorting step will take care of the
1138 # dependencies.
1139 all-subdirs = csu assert ctype locale intl catgets math setjmp signal       \
1140               stdlib stdio-common libio malloc string wcsmbs time dirent    \
1141               grp pwd posix io termios resource misc socket sysvipc gmon    \
1142               gnulib iconv iconvdata wctype manual shadow gshadow po argp   \
1143               crypt localedata timezone rt conform debug mathvec            \
1144               $(add-on-subdirs) dlfcn elf
1145
1146 ifndef avoid-generated
1147 # sysd-sorted itself will contain rules making the sysd-sorted target
1148 # depend on Depend files.  But if you just added a Depend file to an
1149 # existing directory not in all-subdirs, then sysd-sorted needs to
1150 # be regenerated, so it depends on existing $(sorted-subdirs:=/Depend) files.
1151 all-Depend-files := $(wildcard $(sort \
1152                         $(foreach dir,$(all-subdirs),\
1153                                   $(firstword $($(dir)-srcdir) \
1154                                   $(..)$(dir))/Depend) \
1155                         $(sorted-subdirs:=/Depend)))
1156 $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \
1157                              $(common-objpfx)config.make $(..)Makeconfig \
1158                              $(wildcard $(sysdirs:=/Subdirs)) \
1159                              $(all-Depend-files)
1160         $(AWK) -f $< \
1161                -v subdirs='$(all-subdirs)' \
1162                -v srcpfx='$(..)' \
1163                $(filter %/Subdirs %/Depend,$^) > $@-tmp
1164         mv -f $@-tmp $@
1165 $(all-Depend-files): ;
1166 endif
1167
1168 # This gives partial TARGET:SOURCE pattern pairs to have rules
1169 # emitted into sysd-rules.  A sysdeps Makeconfig fragment can
1170 # add its own special object file prefix to this list with e.g. foo-%:%
1171 # to have foo-*.? compiled from *.? using $(foo-CPPFLAGS).
1172 sysd-rules-patterns := %:% rtld-%:rtld-% rtld-%:% m_%:s_%
1173
1174 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
1175 sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig))
1176 ifneq (,$(sysdep-makeconfigs))
1177 include $(sysdep-makeconfigs)
1178 endif
1179
1180 # Compute just the target patterns.  Makeconfig has set sysd-rules-patterns.
1181 sysd-rules-targets := $(sort $(foreach p,$(sysd-rules-patterns),\
1182                                          $(firstword $(subst :, ,$p))))
1183
1184 # A sysdeps Makeconfig fragment may set libc-reentrant to yes.
1185 ifeq (yes,$(libc-reentrant))
1186 defines += -D_LIBC_REENTRANT
1187
1188 libio-mtsafe = -D_IO_MTSAFE_IO
1189 endif
1190
1191 # The name to give to a test in test results summaries.
1192 test-name = $(strip $(patsubst %.out, %, $(patsubst $(common-objpfx)%, %, $@)))
1193
1194 # Likewise, in XFAIL variable names.
1195 test-xfail-name = $(strip $(patsubst %.out, %, $(patsubst $(objpfx)%, %, $@)))
1196
1197 # Command to output a test status line (such as PASS: test-name).  If
1198 # test-xfail-$(test-xfail-name) has a nonempty value, the status will be
1199 # XPASS or XFAIL rather than PASS or FAIL.
1200 evaluate-test = $(..)scripts/evaluate-test.sh $(test-name) $$? \
1201                   $(if $(test-xfail-$(test-xfail-name)),true,false) \
1202                   $(if $(stop-on-test-failure),true,false) \
1203                   > $(common-objpfx)$(test-name).test-result
1204
1205 endif # Makeconfig not yet included
1206
1207 # Local Variables:
1208 # mode: makefile
1209 # End: