Makeconfig

   1 # Copyright (C) 1991-2015 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 = $(exceptions)
  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 locale files.
 194 ifndef localedir
 195 localedir = $(libdir)/locale
 196 endif
 197 inst_localedir = $(install_root)$(localedir)
 198
 199 # Where to install the message catalog data files (which are
 200 # machine-independent).
 201 ifndef msgcatdir
 202 msgcatdir = $(datadir)/locale
 203 endif
 204 inst_msgcatdir = $(install_root)$(msgcatdir)
 205
 206 # Where to install the locale charmap source files.
 207 ifndef i18ndir
 208 i18ndir = $(datadir)/i18n
 209 endif
 210 inst_i18ndir = $(install_root)$(i18ndir)
 211
 212 # Where to install the shared object for charset transformation.
 213 ifndef gconvdir
 214 gconvdir = $(libdir)/gconv
 215 endif
 216 inst_gconvdir = $(install_root)$(gconvdir)
 217
 218 # Where to install programs.
 219 ifndef bindir
 220 bindir = $(exec_prefix)/bin
 221 endif
 222 inst_bindir = $(install_root)$(bindir)
 223
 224 # Where to install internal programs.
 225 ifndef libexecdir
 226 libexecdir = $(exec_prefix)/libexec
 227 endif
 228 inst_libexecdir = $(install_root)$(libexecdir)
 229
 230 # Where to install administrative programs.
 231 ifndef rootsbindir
 232 rootsbindir = $(exec_prefix)/sbin
 233 endif
 234 inst_rootsbindir = $(install_root)$(rootsbindir)
 235
 236 ifndef sbindir
 237 sbindir = $(exec_prefix)/sbin
 238 endif
 239 inst_sbindir = $(install_root)$(sbindir)
 240
 241 # Where to install the Info files.
 242 ifndef infodir
 243 infodir = $(prefix)/info
 244 endif
 245 inst_infodir = $(install_root)$(infodir)
 246
 247 # Where to install audit libraries.
 248 ifndef auditdir
 249 auditdir = $(libdir)/audit
 250 endif
 251 inst_auditdir = $(install_root)$(auditdir)
 252
 253 # Where to install default configuration files.  These include the local
 254 # timezone specification and network data base files.
 255 ifndef sysconfdir
 256 sysconfdir = $(prefix)/etc
 257 endif
 258 inst_sysconfdir = $(install_root)$(sysconfdir)
 259
 260 # Directory for the database files and Makefile for nss_db.
 261 ifndef vardbdir
 262 vardbdir = $(localstatedir)/db
 263 endif
 264 inst_vardbdir = $(install_root)$(vardbdir)
 265
 266 # Where to install the "localtime" timezone file; this is the file whose
 267 # contents $(localtime) specifies.  If this is a relative pathname, it is
 268 # relative to $(zonedir).  It is a good idea to put this somewhere
 269 # other than there, so the zoneinfo directory contains only universal data,
 270 # localizing the configuration data elsewhere.
 271 ifndef localtime-file
 272 localtime-file = $(sysconfdir)/localtime
 273 endif
 274
 275 # What to use for leap second specifications in compiling the default
 276 # timezone files.  Set this to `/dev/null' for no leap second handling as
 277 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
 278 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
 279 # This variable determines the default: if it's `/dev/null',
 280 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
 281 ifndef leapseconds
 282 leapseconds = /dev/null
 283 endif
 284
 285 # What timezone's DST rules should be used when a POSIX-style TZ
 286 # environment variable doesn't specify any rules.  For 1003.1 compliance
 287 # this timezone must use rules that are as U.S. federal law defines DST.
 288 # Run `make -C time echo-zonenames' to see a list of available zone names.
 289 # This setting can be changed with `zic -p TIMEZONE' at any time.
 290 # If you want POSIX.1 compatibility, use `America/New_York'.
 291 ifndef posixrules
 292 posixrules = America/New_York
 293 endif
 294
 295 # Where to install the "posixrules" timezone file; this is file
 296 # whose contents $(posixrules) specifies.  If this is a relative
 297 # pathname, it is relative to $(zonedir).
 298 ifndef posixrules-file
 299 posixrules-file = posixrules
 300 endif
 301
 302
 303 # Directory where your system's native header files live.
 304 # This is used on Unix systems to generate some GNU libc header files.
 305 ifndef sysincludedir
 306 sysincludedir = /usr/include
 307 endif
 308
 309
 310 # Commands to install files.
 311 ifndef INSTALL_DATA
 312 INSTALL_DATA = $(INSTALL) -m 644
 313 endif
 314 ifndef INSTALL_SCRIPT
 315 INSTALL_SCRIPT = $(INSTALL)
 316 endif
 317 ifndef INSTALL_PROGRAM
 318 INSTALL_PROGRAM = $(INSTALL)
 319 endif
 320 ifndef INSTALL
 321 INSTALL = install
 322 endif
 323
 324
 325 # The name of the C compiler.
 326 # If you've got GCC, and it works, use it.
 327 ifeq ($(origin CC),default)
 328 CC := gcc
 329 endif
 330
 331 # The name of the C compiler to use for compilations of programs to run on
 332 # the host that is building the library.  If you set CC to a
 333 # cross-compiler, you must set this to the normal compiler.
 334 ifndef BUILD_CC
 335 BUILD_CC = $(CC)
 336 endif
 337
 338 # Default flags to pass the C compiler.
 339 ifndef default_cflags
 340 ifeq ($(release),stable)
 341 default_cflags := -g -O2
 342 else
 343 default_cflags := -g -O
 344 endif
 345 endif
 346
 347 # Flags to pass the C compiler when assembling preprocessed assembly code
 348 # (`.S' files).  On some systems the assembler doesn't understand the `#' line
 349 # directives the preprocessor produces.  If you have troubling compiling
 350 # assembly code, try using -P here to suppress these directives.
 351 ifndef asm-CPPFLAGS
 352 asm-CPPFLAGS =
 353 endif
 354
 355 as-needed := -Wl,--as-needed
 356 no-as-needed := -Wl,--no-as-needed
 357
 358 # Must be supported by the linker.
 359 no-whole-archive = -Wl,--no-whole-archive
 360 whole-archive = -Wl,--whole-archive
 361
 362 # Installed name of the startup code.
 363 # The ELF convention is that the startfile is called crt1.o
 364 start-installed-name = crt1.o
 365 # On systems that do not need a special startfile for statically linked
 366 # binaries, simply set it to the normal name.
 367 ifndef static-start-installed-name
 368 static-start-installed-name = $(start-installed-name)
 369 endif
 370
 371 ifeq (yesyes,$(build-shared)$(have-z-combreloc))
 372 combreloc-LDFLAGS = -Wl,-z,combreloc
 373 LDFLAGS.so += $(combreloc-LDFLAGS)
 374 LDFLAGS-rtld += $(combreloc-LDFLAGS)
 375 endif
 376
 377 relro-LDFLAGS = -Wl,-z,relro
 378 LDFLAGS.so += $(relro-LDFLAGS)
 379 LDFLAGS-rtld += $(relro-LDFLAGS)
 380
 381 ifeq (yes,$(have-hash-style))
 382 # For the time being we unconditionally use 'both'.  At some time we
 383 # should declare statically linked code as 'out of luck' and compile
 384 # with --hash-style=gnu only.
 385 hashstyle-LDFLAGS = -Wl,--hash-style=both
 386 LDFLAGS.so += $(hashstyle-LDFLAGS)
 387 LDFLAGS-rtld += $(hashstyle-LDFLAGS)
 388 endif
 389
 390 # Command to run after every final link (executable or shared object).
 391 # This is invoked with $(call after-link,...), so it should operate on
 392 # the file $1.  This can be set to do some sort of post-processing on
 393 # binaries, or to perform some sort of static sanity check.
 394 ifndef after-link
 395 after-link =
 396 endif
 397
 398 # Command for linking PIE programs with the C library.
 399 ifndef +link-pie
 400 +link-pie-before-libc = $(CC) -pie -Wl,-O1 -nostdlib -nostartfiles -o $@ \
 401              $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
 402              $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
 403              $(addprefix $(csu-objpfx),S$(start-installed-name)) \
 404              $(+preinit) $(+prectorS) \
 405              $(filter-out $(addprefix $(csu-objpfx),start.o \
 406                                                     S$(start-installed-name))\
 407                           $(+preinit) $(link-extra-libs) \
 408                           $(common-objpfx)libc% $(+postinit),$^) \
 409              $(link-extra-libs)
 410 +link-pie-after-libc = $(+postctorS) $(+postinit)
 411 define +link-pie
 412 $(+link-pie-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-pie-after-libc)
 413 $(call after-link,$@)
 414 endef
 415 define +link-pie-tests
 416 $(+link-pie-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
 417                          $(+link-pie-after-libc)
 418 $(call after-link,$@)
 419 endef
 420 endif
 421 # Command for statically linking programs with the C library.
 422 ifndef +link-static
 423 +link-static-before-libc = $(CC) -nostdlib -nostartfiles -static -o $@ \
 424               $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F))  \
 425               $(addprefix $(csu-objpfx),$(static-start-installed-name)) \
 426               $(+preinit) $(+prectorT) \
 427               $(filter-out $(addprefix $(csu-objpfx),start.o \
 428                                                      $(start-installed-name))\
 429                            $(+preinit) $(link-extra-libs-static) \
 430                            $(common-objpfx)libc% $(+postinit),$^) \
 431               $(link-extra-libs-static)
 432 +link-static-after-libc = $(+postctorT) $(+postinit)
 433 define +link-static
 434 $(+link-static-before-libc) $(link-libc-static) $(+link-static-after-libc)
 435 $(call after-link,$@)
 436 endef
 437 define +link-static-tests
 438 $(+link-static-before-libc) $(link-libc-static-tests) $(+link-static-after-libc)
 439 $(call after-link,$@)
 440 endef
 441 endif
 442 # Commands for linking programs with the C library.
 443 ifndef +link
 444 ifeq (yes,$(build-shared))
 445 +link-before-libc = $(CC) -nostdlib -nostartfiles -o $@ \
 446               $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
 447               $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
 448               $(addprefix $(csu-objpfx),$(start-installed-name)) \
 449               $(+preinit) $(+prector) \
 450               $(filter-out $(addprefix $(csu-objpfx),start.o \
 451                                                      $(start-installed-name))\
 452                            $(+preinit) $(link-extra-libs) \
 453                            $(common-objpfx)libc% $(+postinit),$^) \
 454               $(link-extra-libs)
 455 +link-after-libc = $(+postctor) $(+postinit)
 456 define +link
 457 $(+link-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-after-libc)
 458 $(call after-link,$@)
 459 endef
 460 define +link-tests
 461 $(+link-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
 462                      $(+link-after-libc)
 463 $(call after-link,$@)
 464 endef
 465 else
 466 +link = $(+link-static)
 467 +link-tests = $(+link-static-tests)
 468 endif
 469 endif
 470 ifeq (yes,$(build-shared))
 471 ifndef rtld-LDFLAGS
 472 rtld-LDFLAGS = -Wl,-dynamic-linker=$(rtlddir)/$(rtld-installed-name)
 473 endif
 474 ifndef rtld-tests-LDFLAGS
 475 ifeq (yes,$(build-hardcoded-path-in-tests))
 476 rtld-tests-LDFLAGS = -Wl,-dynamic-linker=$(elf-objpfx)ld.so
 477 else
 478 rtld-tests-LDFLAGS = $(rtld-LDFLAGS)
 479 endif
 480 endif
 481 endif
 482 ifndef link-libc
 483 ifeq (yes,$(build-shared))
 484 # We need the versioned name of libc.so in the deps of $(others) et al
 485 # so that the symlink to libc.so is created before anything tries to
 486 # run the linked programs.
 487 link-libc-rpath-link = -Wl,-rpath-link=$(rpath-link)
 488 ifeq (yes,$(build-hardcoded-path-in-tests))
 489 link-libc-tests-rpath-link = -Wl,-rpath=$(rpath-link)
 490 else
 491 link-libc-tests-rpath-link = $(link-libc-rpath-link)
 492 endif
 493 link-libc-before-gnulib = $(common-objpfx)libc.so$(libc.so-version) \
 494                           $(common-objpfx)$(patsubst %,$(libtype.oS),c) \
 495                           $(as-needed) $(elf-objpfx)ld.so \
 496                           $(no-as-needed)
 497 link-libc = $(link-libc-rpath-link) $(link-libc-before-gnulib) $(gnulib)
 498 link-libc-tests = $(link-libc-tests-rpath-link) \
 499                   $(link-libc-before-gnulib) $(gnulib-tests)
 500 # This is how to find at build-time things that will be installed there.
 501 rpath-dirs = math elf dlfcn nss nis rt resolv crypt
 502 rpath-link = \
 503 $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
 504 else
 505 link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
 506 link-libc-tests = $(common-objpfx)libc.a $(otherlibs) $(gnulib-tests) $(common-objpfx)libc.a $(gnulib-tests)
 507 endif
 508 endif
 509
 510 # Differences in the linkers on the various platforms.
 511 LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
 512 LDFLAGS-soname-fname = -Wl,-soname,$(@F)
 513 LDFLAGS-rdynamic = -rdynamic
 514 LDFLAGS-Bsymbolic = -Bsymbolic
 515
 516 # Choose the default search path for the dynamic linker based on
 517 # where we will install libraries.
 518 ifneq ($(libdir),$(slibdir))
 519 default-rpath = $(slibdir):$(libdir)
 520 else
 521 default-rpath = $(libdir)
 522 endif
 523
 524 ifndef link-extra-libs
 525 link-extra-libs = $(LDLIBS-$(@F))
 526 link-extra-libs-static = $(link-extra-libs)
 527 endif
 528
 529 # The static libraries.
 530 link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group
 531 link-libc-static-tests = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib-tests) -Wl,--end-group
 532
 533 # How to link against libgcc.  Some libgcc functions, such as those
 534 # for "long long" arithmetic or software floating point, can always be
 535 # built without use of C library headers and do not have any global
 536 # state so can safely be linked statically into any executable or
 537 # shared library requiring them; these functions are in libgcc.a.
 538 # Other functions, relating to exception handling, may require C
 539 # library headers to build and it may not be safe to have more than
 540 # one copy of them in a process; these functions are only in
 541 # libgcc_s.so and libgcc_eh.a.
 542 #
 543 # To avoid circular dependencies when bootstrapping, it is desirable
 544 # to avoid use of libgcc_s and libgcc_eh in building glibc.  Where any
 545 # glibc functionality (in particular, thread cancellation) requires
 546 # exception handling, this is implemented through dlopen of libgcc_s
 547 # to avoid unnecessary dependencies on libgcc_s by programs not using
 548 # that functionality; executables built with glibc do not use
 549 # exception handling other than through thread cancellation.
 550 #
 551 # Undefined references to functions from libgcc_eh or libgcc_s may
 552 # arise for code built with -fexceptions.  In the case of statically
 553 # linked programs installed by glibc, unwinding will never actually
 554 # occur at runtime and the use of elf/static-stubs.c to resolve these
 555 # references is safe.  In the case of statically linked test programs
 556 # and test programs built with -fexceptions, unwinding may occur in
 557 # some cases and it is preferable to link with libgcc_eh or libgcc_s
 558 # so that the testing is as similar as possible to how programs will
 559 # be built with the installed glibc.
 560 #
 561 # Some architectures have architecture-specific systems for exception
 562 # handling that may involve undefined references to
 563 # architecture-specific functions.  On those architectures,
 564 # gnulib-arch and static-gnulib-arch may be defined in sysdeps
 565 # makefiles to use additional libraries for linking executables and
 566 # shared libraries built by glibc.
 567 ifndef gnulib
 568 ifneq ($(have-cc-with-libunwind),yes)
 569   libunwind =
 570 else
 571   libunwind = -lunwind
 572 endif
 573 libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed
 574 gnulib-arch =
 575 gnulib = -lgcc $(gnulib-arch)
 576 gnulib-tests := -lgcc $(libgcc_eh)
 577 static-gnulib-arch =
 578 # By default, elf/static-stubs.o, instead of -lgcc_eh, is used to
 579 # statically link programs.  When --disable-shared is used, we use
 580 # -lgcc_eh since elf/static-stubs.o isn't sufficient.
 581 ifeq (yes,$(build-shared))
 582 static-gnulib = -lgcc $(static-gnulib-arch)
 583 else
 584 static-gnulib = -lgcc -lgcc_eh $(static-gnulib-arch)
 585 endif
 586 static-gnulib-tests := -lgcc -lgcc_eh $(libunwind)
 587 libc.so-gnulib := -lgcc
 588 endif
 589 +preinit = $(addprefix $(csu-objpfx),crti.o)
 590 +postinit = $(addprefix $(csu-objpfx),crtn.o)
 591 +prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o`
 592 +postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
 593 # Variants of the two previous definitions for linking PIE programs.
 594 +prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o`
 595 +postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o`
 596 # Variants of the two previous definitions for statically linking programs.
 597 +prectorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o`
 598 +postctorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
 599 +interp = $(addprefix $(elf-objpfx),interp.os)
 600 csu-objpfx = $(common-objpfx)csu/
 601 elf-objpfx = $(common-objpfx)elf/
 602
 603 # A command that, prepended to the name and arguments of a program,
 604 # and run on the build system, causes that program with those
 605 # arguments to be run on the host for which the library is built.
 606 ifndef test-wrapper
 607 test-wrapper =
 608 endif
 609 # Likewise, but the name of the program is preceded by
 610 # <variable>=<value> assignments for environment variables.
 611 ifndef test-wrapper-env
 612 test-wrapper-env = $(test-wrapper) env
 613 endif
 614 # Likewise, but the program's environment will be empty except for any
 615 # explicit <variable>=<value> assignments preceding the program name.
 616 ifndef test-wrapper-env-only
 617 test-wrapper-env-only = $(test-wrapper) env -i
 618 endif
 619
 620 # Whether to run test programs built for the library's host system.
 621 ifndef run-built-tests
 622 ifeq (yes|,$(cross-compiling)|$(test-wrapper))
 623 run-built-tests = no
 624 else
 625 run-built-tests = yes
 626 endif
 627 endif
 628
 629 # Whether to stop immediately when a test fails.  Nonempty means to
 630 # stop, empty means not to stop.
 631 ifndef stop-on-test-failure
 632 stop-on-test-failure =
 633 endif
 634
 635 # How to run a program we just linked with our library.
 636 # The program binary is assumed to be $(word 2,$^).
 637 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
 638 rtld-prefix = $(elf-objpfx)$(rtld-installed-name)                             \
 639               --library-path                                                  \
 640               $(rpath-link)$(patsubst %,:%,$(sysdep-library-path))
 641 ifeq (yes,$(build-shared))
 642 comma = ,
 643 sysdep-library-path = \
 644 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
 645                                        $(filter -Wl$(comma)-rpath-link=%,\
 646                                                 $(sysdep-LDFLAGS)))))
 647 # $(run-via-rtld-prefix) is a command that, when prepended to the name
 648 # of a program built with the newly built library, produces a command
 649 # that, executed on the host for which the library is built, runs that
 650 # program.  For tests listed in tests-static or xtests-static, it is
 651 # empty.
 652 run-via-rtld-prefix =                                                         \
 653   $(if $(strip $(filter $(notdir $(built-program-file)),                      \
 654                         $(tests-static) $(xtests-static))),, $(rtld-prefix))
 655 else
 656 run-via-rtld-prefix =
 657 endif
 658 # $(run-program-env) is the default environment variable settings to
 659 # use when running a program built with the newly built library.
 660 run-program-env = GCONV_PATH=$(common-objpfx)iconvdata \
 661                   LOCPATH=$(common-objpfx)localedata LC_ALL=C
 662 # $(run-program-prefix) is a command that, when prepended to the name
 663 # of a program built with the newly built library, produces a command
 664 # that, executed on the build system on which "make" is run, runs that
 665 # program.  $(run-program-prefix-before-env) and
 666 # $(run-program-prefix-after-env) are similar, but separate parts
 667 # before and after a list of environment variables.
 668 run-program-prefix-before-env = $(test-wrapper-env)
 669 run-program-prefix-after-env = $(run-via-rtld-prefix)
 670 run-program-prefix = $(run-program-prefix-before-env) $(run-program-env) \
 671                      $(run-program-prefix-after-env)
 672 # $(built-program-cmd) is a command that, executed on the build system
 673 # on which "make" is run, runs the newly built program that is the
 674 # second dependency of the makefile target in which
 675 # $(built-program-cmd) is used.  $(built-program-cmd-before-env) and
 676 # $(built-program-cmd-after-env) are similar, before and after a list
 677 # of environment variables.
 678 built-program-cmd-before-env = $(test-wrapper-env)
 679 built-program-cmd-after-env = $(run-via-rtld-prefix) $(built-program-file)
 680 built-program-cmd = $(built-program-cmd-before-env) $(run-program-env) \
 681                     $(built-program-cmd-after-env)
 682 # $(host-built-program-cmd) is a command that, executed on the host
 683 # for which the library is built, runs the newly built program that is
 684 # the second dependency of the makefile target in which
 685 # $(host-built-program-cmd) is used.
 686 host-built-program-cmd = $(run-via-rtld-prefix) $(built-program-file)
 687
 688 ifndef LD
 689 LD := ld -X
 690 endif
 691
 692 # $(test-via-rtld-prefix) is a command that, when prepended to the name
 693 # of a test program built with the newly built library, produces a command
 694 # that, executed on the host for which the library is built, runs that
 695 # program.  For tests listed in tests-static or xtests-static as well
 696 # as when test programs are hardcoded to the newly built libraries, it
 697 # is empty.
 698
 699 # $(test-program-prefix) is a command that, when prepended to the name
 700 # of a test program built with the newly built library, produces a command
 701 # that, executed on the build system on which "make" is run, runs that
 702 # test program.  $(test-program-prefix-before-env) and
 703 # $(test-program-prefix-after-env) are similar, before and after a
 704 # list of environment variables.
 705
 706 # $(test-program-cmd) is a command that, executed on the build system
 707 # on which "make" is run, runs the newly built test program that is the
 708 # second dependency of the makefile target in which
 709 # $(test-program-cmd) is used.  $(test-program-cmd-before-env) and
 710 # $(test-program-cmd-after-env) are similar, before and after a list
 711 # of environment variables.
 712
 713 # $(host-test-program-cmd) is a command that, executed on the host
 714 # for which the library is built, runs the newly built test program that
 715 # is the second dependency of the makefile target in which
 716 # $(host-test-program-cmd) is used.
 717
 718 ifeq (yes,$(build-hardcoded-path-in-tests))
 719 test-via-rtld-prefix =
 720 test-program-prefix-before-env = $(test-wrapper-env)
 721 test-program-prefix-after-env =
 722 test-program-prefix = $(test-program-prefix-before-env) $(run-program-env) \
 723                       $(test-program-prefix-after-env)
 724 test-program-cmd-before-env = $(test-wrapper-env)
 725 test-program-cmd-after-env = $(built-program-file)
 726 test-program-cmd = $(test-program-cmd-before-env) $(run-program-env) \
 727                    $(test-program-cmd-after-env)
 728 host-test-program-cmd = $(built-program-file)
 729 else
 730 test-via-rtld-prefix = $(run-via-rtld-prefix)
 731 test-program-prefix-before-env = $(run-program-prefix-before-env)
 732 test-program-prefix-after-env = $(run-program-prefix-after-env)
 733 test-program-prefix = $(run-program-prefix)
 734 test-program-cmd-before-env = $(built-program-cmd-before-env)
 735 test-program-cmd-after-env = $(built-program-cmd-after-env)
 736 test-program-cmd = $(built-program-cmd)
 737 host-test-program-cmd = $(host-built-program-cmd)
 738 endif
 739
 740 # Extra flags to pass to GCC.
 741 ifeq ($(all-warnings),yes)
 742 +gccwarn := -Wall -Wwrite-strings -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar
 743 else
 744 +gccwarn := -Wall -Wwrite-strings
 745 endif
 746 +gccwarn += -Wundef
 747 ifeq ($(enable-werror),yes)
 748 +gccwarn += -Werror -Wno-error=undef
 749 endif
 750 +gccwarn-c = -Wstrict-prototypes
 751
 752 # We do not depend on the address of constants in different files to be
 753 # actually different, so allow the compiler to merge them all.
 754 +merge-constants = -fmerge-all-constants
 755
 756 # We have to assume that glibc functions are called in any rounding
 757 # mode and also change the rounding mode in a few functions. So,
 758 # disable any optimization that assume default rounding mode.
 759 +math-flags = -frounding-math
 760
 761 # This is the program that generates makefile dependencies from C source files.
 762 # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
 763 # targets for headers so that removed headers don't break the build.
 764 ifndef +mkdep
 765 +mkdep = $(CC) -M -MP
 766 endif
 767
 768 # The program that makes Emacs-style TAGS files.
 769 ETAGS   := etags
 770
 771 # The `xgettext' program for producing .pot files from sources.
 772 ifndef XGETTEXT
 773 XGETTEXT = xgettext
 774 endif
 775
 776 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
 777 # perhaps others) to preprocess assembly code in some cases.
 778 M4 = m4
 779
 780 # To force installation of files even if they are older than the
 781 # installed files.  This variable is included in the dependency list
 782 # of all installation targets.
 783 ifeq ($(force-install),yes)
 784 +force = force-install
 785 else
 786 +force =
 787 endif
 788
 789 ####
 790 #### End of configuration variables.
 791 ####
 792 \f
 793 # This tells some versions of GNU make before 3.63 not to export all variables.
 794 .NOEXPORT:
 795
 796 # We want to echo the commands we're running without
 797 # umpteen zillion filenames along with it (we use `...' instead)
 798 # but we don't want this echoing done when the user has said
 799 # he doesn't want to see commands echoed by using -s.
 800 ifneq   "$(findstring s,$(MAKEFLAGS))" ""       # if -s
 801 +cmdecho        := echo >/dev/null
 802 else                                            # not -s
 803 +cmdecho        := echo
 804 endif                                           # -s
 805
 806 # These are the flags given to the compiler to tell
 807 # it what sort of optimization and/or debugging output to do.
 808 ifndef  +cflags
 809 # If `CFLAGS' was defined, use that.
 810 ifdef           CFLAGS
 811 +cflags := $(filter-out -I%,$(CFLAGS))
 812 endif           # CFLAGS
 813 endif   # +cflags
 814
 815 # If none of the above worked, default to "-g -O".
 816 ifeq    "$(strip $(+cflags))" ""
 817 +cflags := $(default_cflags)
 818 endif   # $(+cflags) == ""
 819
 820 +cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags)
 821 +gcc-nowarn := -w
 822
 823 # Don't duplicate options if we inherited variables from the parent.
 824 +cflags := $(sort $(+cflags))
 825
 826 # Each sysdeps directory can contain header files that both will be
 827 # used to compile and will be installed.  Each can also contain an
 828 # include/ subdirectory, whose header files will be used to compile
 829 # but will not be installed, and will take precedence over the
 830 # installed files.  This mirrors the top-level include/ subdirectory.
 831 +sysdep-includes := $(foreach dir,$(+sysdep_dirs),\
 832                               $(addprefix -I,$(wildcard $(dir)/include) $(dir)))
 833
 834 # These are flags given to the C compiler to tell it to look for
 835 # include files (including ones given in angle brackets) in the parent
 836 # library source directory, in the include directory, and in the
 837 # current directory.
 838 +includes = -I$(..)include $(if $(subdir),$(objpfx:%/=-I%)) \
 839             $(+sysdep-includes) $(includes) \
 840             $(patsubst %/,-I%,$(..)) $(libio-include) -I. $(sysincludes)
 841
 842 # Since libio has several internal header files, we use a -I instead
 843 # of many little headers in the include directory.
 844 libio-include = -I$(..)libio
 845
 846 # List of non-library modules that we build.
 847 built-modules = iconvprogs iconvdata ldconfig lddlibc4 libmemusage \
 848                 libSegFault libpcprofile librpcsvc locale-programs \
 849                 memusagestat nonlib nscd extramodules libnldbl
 850
 851 in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \
 852                                     $(libof-$(<F)) \
 853                                     $(libof-$(@F)) \
 854                                     libc))
 855
 856 module-cppflags-real = -include $(common-objpfx)libc-modules.h \
 857                        -DMODULE_NAME=$(in-module)
 858
 859 # We don't need libc-modules.h and the MODULE_NAME definition for .v.i
 860 # files.  These targets don't (and will likely never need to) use the IS_IN
 861 # facility.  In fact, shlib-versions should not use it because that will
 862 # create a circular dependency as libc-modules.h is generated from
 863 # shlib-versions.
 864 module-cppflags = $(if $(filter %.v.i,$(@F)),,$(module-cppflags-real))
 865
 866 # These are the variables that the implicit compilation rules use.
 867 # Note that we can't use -std=* in CPPFLAGS, because it overrides
 868 # the implicit -lang-asm and breaks cpp behavior for .S files--notably
 869 # it causes cpp to stop predefining __ASSEMBLER__.
 870 CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \
 871            $($(subdir)-CPPFLAGS) \
 872            $(+includes) $(defines) $(module-cppflags) \
 873            -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
 874            $(CPPFLAGS-$(suffix $@)) \
 875            $(foreach lib,$(libof-$(basename $(@F))) \
 876                          $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
 877            $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
 878 override CFLAGS = -std=gnu99 $(gnu89-inline-CFLAGS) $(config-extra-cflags) \
 879                   $(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \
 880                   $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \
 881                   $(CFLAGS-$(@F)) \
 882                   $(foreach lib,$(libof-$(basename $(@F))) \
 883                                 $(libof-$(<F)) $(libof-$(@F)),$(CFLAGS-$(lib)))
 884 override CXXFLAGS = $(c++-sysincludes) \
 885                     $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
 886                     $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
 887
 888 # If everything is compiled with -fPIC (implicitly) we must tell this by
 889 # defining the PIC symbol.
 890 ifeq (yes,$(build-pic-default))
 891 pic-default = -DPIC
 892 endif
 893
 894 # Enable object files for different versions of the library.
 895 # Various things use $(object-suffixes) to know what all to make.
 896 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
 897 # to pass different flags for each flavor.
 898 libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
 899 all-object-suffixes := .o .os .op .og .oS
 900 object-suffixes :=
 901 CPPFLAGS-.o = $(pic-default)
 902 CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
 903 libtype.o := lib%.a
 904 object-suffixes += .o
 905 ifeq (yes,$(build-shared))
 906 # Under --enable-shared, we will build a shared library of PIC objects.
 907 # The PIC object files are named foo.os.
 908 object-suffixes += .os
 909 CPPFLAGS-.os = -DPIC -DSHARED
 910 CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
 911 libtype.os := lib%_pic.a
 912 # This can be changed by a sysdep makefile
 913 pic-ccflag = -fPIC
 914 # This one should always stay like this unless there is a very good reason.
 915 PIC-ccflag = -fPIC
 916 endif
 917 # This can be changed by a sysdep makefile
 918 pie-ccflag = -fpie
 919 # This one should always stay like this unless there is a very good reason.
 920 PIE-ccflag = -fPIE
 921 ifeq (yes,$(build-profile))
 922 # Under --enable-profile, we will build a static library of profiled objects.
 923 # The profiled object files are named foo.op.
 924 object-suffixes += .op
 925 CPPFLAGS-.op = -DPROF $(pic-default)
 926 CFLAGS-.op = -pg
 927 libtype.op = lib%_p.a
 928 endif
 929
 930 # Convenience variable for when we want to treat shared-library cases
 931 # differently from the rest.
 932 object-suffixes-noshared := $(filter-out .os,$(object-suffixes))
 933
 934 object-suffixes-for-libc := $(object-suffixes)
 935
 936 ifeq (yes,$(build-shared))
 937 # Build special library that contains the static-only routines for libc.
 938 object-suffixes-for-libc += .oS
 939
 940 # Must build the routines as PIC, though, because they can end up in (users')
 941 # shared objects.  We don't want to use CFLAGS-os because users may, for
 942 # example, make that processor-specific.
 943 CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag)
 944 CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1
 945 libtype.oS = lib%_nonshared.a
 946 endif
 947
 948 # The assembler can generate debug information too.
 949 ifndef ASFLAGS
 950 ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))
 951 endif
 952 ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)
 953
 954 ifndef BUILD_CC
 955 BUILD_CC = $(CC)
 956 endif
 957
 958 move-if-change = $(SHELL) $(..)scripts/move-if-change
 959 \f
 960 -include $(common-objpfx)sysd-sorted
 961 subdirs = $(sorted-subdirs)
 962 subdir-srcdirs = $(foreach dir,$(subdirs),\
 963                            $(firstword $($(dir)-srcdir) $(..)$(dir)))
 964
 965 # This is a pair of implicit rules to preprocess a file with # comments,
 966 # %ifdef et al, based on config.h settings or other %include'd files.
 967 # We use chained rules instead of a pipeline here so that we can properly
 968 # check the exit status of cpp rather than using its bad output when there
 969 # is a preprocessing error.  Another rule should depend on the output file
 970 # `FOO.v', and along with that `FOO.v.i' should be given dependencies
 971 # listing both its input files, and any header files that it may reference
 972 # (but no commands).
 973 %.v.i: $(common-objpfx)config.h $(..)Makeconfig
 974         sed '/^[        ]*%/!s/#.*$$//;/^[      ]*$$/d;s/^[     ]*%/#/' \
 975             $(filter-out FORCE %.h $(..)Makeconfig,$^) \
 976         | $(CC) -E -undef $(CPPFLAGS) -x assembler-with-cpp - \
 977                    > $@T
 978         mv -f $@T $@
 979 %.v: %.v.i
 980         sed '/^[        ]*#/d;/^[       ]*$$/d' $< > $@T
 981         mv -f $@T $@
 982
 983 ifeq (yes, $(build-shared))
 984
 985 # To generate a header to support more than one ABI for different
 986 # architecture variants, the CPU/Makefile defines abi-variants to be a
 987 # list of names for those variants (e.g. 32 64), and, for each variant,
 988 # defines abi-$(variant)-condition to be the condition for those options
 989 # to use in a C #if condition.  abi-includes may be defined to a list of
 990 # headers to include in the generated header, if the default does not
 991 # suffice.  default-abi is defined to be the ABI for the current glibc
 992 # build.
 993
 994 ifndef abi-includes
 995 abi-includes := bits/wordsize.h
 996 endif
 997
 998 # Process the shlib-versions file, which tells us what shared library
 999 # version numbers to use when we install shared objects on this system.
1000 # We need to wait until $(subdirs) is complete.
1001 ifeq ($(sysd-sorted-done),t)
1002 -include $(common-objpfx)soversions.mk
1003 ifndef avoid-generated
1004 # This lets add-ons give more-specific matches that override defaults
1005 # in the top-level file.
1006 $(common-objpfx)shlib-versions.v.i: \
1007         $(wildcard $(+sysdep_dirs:=/shlib-versions) \
1008                    $(subdir-srcdirs:=/shlib-versions)) \
1009         $(..)shlib-versions
1010
1011 $(common-objpfx)soversions.i: $(..)scripts/soversions.awk \
1012                               $(common-objpfx)shlib-versions.v
1013         $(AWK) -f $^ > $@T
1014         mv -f $@T $@
1015 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i $(..)Makeconfig
1016         (while read which lib number setname; do \
1017            eval seen_$$which=1; \
1018            test x"$$which" = xDEFAULT || continue; \
1019            case $$number in \
1020              [0-9]*) echo "$$lib.so-version=.$$number"; \
1021                      echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
1022              *)      echo "$$lib.so-version=$$number"; \
1023                      echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
1024            esac; \
1025          done; \
1026          echo soversions.mk-done = t;) < $< > $@T; exit 0
1027         mv -f $@T $@
1028 endif
1029 endif
1030
1031 postclean-generated += soversions.mk soversions.i \
1032                        shlib-versions.v shlib-versions.v.i
1033
1034 before-compile += $(common-objpfx)libc-modules.h
1035 ifeq ($(soversions.mk-done),t)
1036 # Generate a header with macro definitions for use with the IS_IN macro.
1037 # These are the possible values for the MODULE_NAME macro defined when building
1038 # sources, to identify which module the translation unit is going to be built
1039 # into.
1040 $(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @:
1041 $(common-objpfx)libc-modules.stmp: $(..)scripts/gen-libc-modules.awk \
1042                                    $(common-objpfx)soversions.i
1043         $(AWK) -v buildlist="$(subst -,_,$(built-modules))" -f $^ > ${@:stmp=T}
1044         $(move-if-change) ${@:stmp=T} ${@:stmp=h}
1045         touch $@
1046
1047 endif
1048
1049 common-generated += libc-modules.h libc-modules.stmp
1050
1051 # The name under which the run-time dynamic linker is installed.
1052 # We are currently going for the convention that `/lib/ld.so.1'
1053 # names the SVR4/ELF ABI-compliant dynamic linker.
1054 ifndef rtld-installed-name
1055 ifdef ld.so-version
1056 rtld-installed-name = $(ld.so-version)
1057 else
1058 rtld-installed-name = ld.so.1
1059 endif
1060 endif
1061
1062 ifndef rtld-version-installed-name
1063 rtld-version-installed-name = ld-$(version).so
1064 endif
1065
1066 endif # build-shared
1067
1068
1069 ifeq ($(build-shared),yes)
1070 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
1071 else
1072 libdl = $(common-objpfx)dlfcn/libdl.a
1073 endif
1074
1075 ifeq ($(build-shared),yes)
1076 libm = $(common-objpfx)math/libm.so$(libm.so-version)
1077 else
1078 libm = $(common-objpfx)math/libm.a
1079 endif
1080
1081 # These are the subdirectories containing the library source.  The order
1082 # is more or less arbitrary.  The sorting step will take care of the
1083 # dependencies.
1084 all-subdirs = csu assert ctype locale intl catgets math setjmp signal       \
1085               stdlib stdio-common libio malloc string wcsmbs time dirent    \
1086               grp pwd posix io termios resource misc socket sysvipc gmon    \
1087               gnulib iconv iconvdata wctype manual shadow gshadow po argp   \
1088               crypt localedata timezone rt conform debug                    \
1089               $(add-on-subdirs) dlfcn elf
1090
1091 ifndef avoid-generated
1092 # sysd-sorted itself will contain rules making the sysd-sorted target
1093 # depend on Depend files.  But if you just added a Depend file to an
1094 # existing directory not in all-subdirs, then sysd-sorted needs to
1095 # be regenerated, so it depends on existing $(sorted-subdirs:=/Depend) files.
1096 all-Depend-files := $(wildcard $(sort \
1097                         $(foreach dir,$(all-subdirs),\
1098                                   $(firstword $($(dir)-srcdir) \
1099                                   $(..)$(dir))/Depend) \
1100                         $(sorted-subdirs:=/Depend)))
1101 $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \
1102                              $(common-objpfx)config.make $(..)Makeconfig \
1103                              $(wildcard $(sysdirs:=/Subdirs)) \
1104                              $(all-Depend-files)
1105         $(AWK) -f $< \
1106                -v subdirs='$(all-subdirs)' \
1107                -v srcpfx='$(..)' \
1108                $(filter %/Subdirs %/Depend,$^) > $@-tmp
1109         mv -f $@-tmp $@
1110 $(all-Depend-files): ;
1111 endif
1112
1113 # This gives partial TARGET:SOURCE pattern pairs to have rules
1114 # emitted into sysd-rules.  A sysdeps Makeconfig fragment can
1115 # add its own special object file prefix to this list with e.g. foo-%:%
1116 # to have foo-*.? compiled from *.? using $(foo-CPPFLAGS).
1117 sysd-rules-patterns := %:% rtld-%:rtld-% rtld-%:% m_%:s_%
1118
1119 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
1120 sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig))
1121 ifneq (,$(sysdep-makeconfigs))
1122 include $(sysdep-makeconfigs)
1123 endif
1124
1125 # Compute just the target patterns.  Makeconfig has set sysd-rules-patterns.
1126 sysd-rules-targets := $(sort $(foreach p,$(sysd-rules-patterns),\
1127                                          $(firstword $(subst :, ,$p))))
1128
1129 # A sysdeps Makeconfig fragment may set libc-reentrant to yes.
1130 ifeq (yes,$(libc-reentrant))
1131 defines += -D_LIBC_REENTRANT
1132
1133 libio-mtsafe = -D_IO_MTSAFE_IO
1134 endif
1135
1136 # The name to give to a test in test results summaries.
1137 test-name = $(strip $(patsubst %.out, %, $(patsubst $(common-objpfx)%, %, $@)))
1138
1139 # Likewise, in XFAIL variable names.
1140 test-xfail-name = $(strip $(patsubst %.out, %, $(patsubst $(objpfx)%, %, $@)))
1141
1142 # Command to output a test status line (such as PASS: test-name).  If
1143 # test-xfail-$(test-xfail-name) has a nonempty value, the status will be
1144 # XPASS or XFAIL rather than PASS or FAIL.
1145 evaluate-test = $(..)scripts/evaluate-test.sh $(test-name) $$? \
1146                   $(if $(test-xfail-$(test-xfail-name)),true,false) \
1147                   $(if $(stop-on-test-failure),true,false) \
1148                   > $(common-objpfx)$(test-name).test-result
1149
1150 endif # Makeconfig not yet included
1151
1152 # Local Variables:
1153 # mode: makefile
1154 # End: