Makeconfig

   1 # Copyright (C) 1991-1999,2000,01 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 Library General Public License as
   6 # published by the Free Software Foundation; either version 2 of the
   7 # 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 # Library General Public License for more details.
  13
  14 # You should have received a copy of the GNU Library General Public
  15 # License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17 # Boston, MA 02111-1307, USA.
  18
  19 #
  20 #       Makefile configuration options for the GNU C library.
  21 #
  22 ifneq (,)
  23 This makefile requires GNU Make.
  24 endif
  25
  26 all: # Make this the default goal
  27
  28 ifneq "$(origin +included-Makeconfig)" "file"
  29
  30 +included-Makeconfig := yes
  31
  32 ifdef subdir
  33 .. := ../
  34 endif
  35
  36 # If config.make exists, the source directory was configured,
  37 # so don't try to be clever and find another directory to build in.
  38 ifneq (,$(wildcard $(..)config.make))
  39 ARCH =
  40 machine =
  41 else    # Not configured.
  42 ifndef ARCH
  43 ifdef machine
  44 ARCH = $(machine)
  45 endif # machine
  46 endif # ARCH
  47 endif # config.make
  48
  49 # Directory for object files and libc.a.  If this is not defined, the
  50 # object files live in the subdirectories where their sources live, and
  51 # libc.a lives in the parent directory (this probably doesn't work any
  52 # more).
  53 ifdef ARCH
  54 ifeq ($(filter /%,$(ARCH)),)
  55 objdir := $(..)$(ARCH)
  56 else
  57 objdir = $(ARCH)
  58 endif
  59 endif
  60
  61 # $(common-objdir) is the place to put objects and
  62 # such that are not specific to a single subdir.
  63 ifdef objdir
  64 objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/)
  65 common-objpfx = $(objdir)/
  66 common-objdir = $(objdir)
  67 else
  68 objpfx :=
  69 ifdef ..
  70 common-objpfx = $(..)
  71 common-objdir = ..
  72 else
  73 # This is a kludge.  make wizards might grok.
  74 common-objpfx = sysdeps/../
  75 common-objdir = .
  76 endif
  77 endif
  78
  79 # Root of the sysdeps tree.
  80 sysdep_dir := $(..)sysdeps
  81 export sysdep_dir := $(sysdep_dir)
  82
  83 # Get the values defined by options to `configure'.
  84 include $(common-objpfx)config.make
  85
  86 # We have a special subdir for each binary format.
  87 # For now, only ELF is fully supported.
  88 ifeq ($(elf),yes)
  89 binfmt-subdir = elf
  90 else
  91 # This is probably better than nothing.
  92 binfmt-subdir = aout
  93 endif
  94
  95 # Complete path to sysdep dirs.
  96 export full_config_sysdirs := $(addprefix $(..),$(config-sysdirs))
  97
  98 # Run config.status to update config.make and config.h.  We don't show the
  99 # dependence of config.h to Make, because it is only touched when it
 100 # changes and so config.status would be run every time; the dependence of
 101 # config.make should suffice to force regeneration and re-exec, and the new
 102 # image will notice if config.h changed.
 103 $(common-objpfx)config.make: $(common-objpfx)config.status \
 104                              $(..)config.make.in $(..)config.h.in
 105         cd $(<D); $(SHELL) $(<F)
 106
 107 # Find all the sysdeps configure fragments, to make sure we re-run
 108 # configure when any of them changes.
 109 $(common-objpfx)config.status: $(..)version.h $(..)configure \
 110                                $(foreach dir,$(full_config_sysdirs),\
 111                                          $(wildcard \
 112                                            $(dir)/Implies) \
 113                                          $(patsubst %.in,%,\
 114                                                     $(firstword $(wildcard \
 115  $(addprefix $(dir)/,configure configure.in)))))
 116         @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
 117          echo The GNU C library has not been configured. >&2; \
 118          echo Run \`configure\' to configure it before building. >&2; \
 119          echo Try \`configure --help\' for more details. >&2; \
 120          exit 1; fi
 121
 122 # We don't want CPPFLAGS to be exported to the command running configure.
 123 unexport CPPFLAGS
 124
 125 # Get the user's configuration parameters.
 126 ifneq ($(wildcard $(..)configparms),)
 127 include $(..)configparms
 128 endif
 129 ifneq ($(objpfx),)
 130 ifneq ($(wildcard $(common-objpfx)configparms),)
 131 include $(common-objpfx)configparms
 132 endif
 133 endif
 134 \f
 135 ####
 136 ####    These are the configuration variables.  You can define values for
 137 ####    the variables below in the file `configparms'.
 138 ####    Do NOT edit this file.
 139 ####
 140
 141
 142 # Set this to either `stdio' or `libio', to compile in either GNU stdio
 143 # or GNU libio.
 144 ifndef stdio
 145 stdio = stdio
 146 endif
 147
 148 # Common prefix for machine-independent installation directories.
 149 ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
 150 prefix = /usr/local
 151 endif
 152
 153 # Decide whether we shall build the programs or not.  We always do this
 154 # unless the user tells us (in configparms) or we are building for a
 155 # standalone target.
 156 ifndef build-programs
 157 ifneq ($(config-os),none)
 158 build-programs=yes
 159 else
 160 build-programs=no
 161 endif
 162 endif
 163
 164 # Common prefix for machine-dependent installation directories.
 165 ifeq ($(origin exec_prefix),undefined)
 166 exec_prefix = $(prefix)
 167 endif
 168
 169 # Where to install the library and object files.
 170 ifndef libdir
 171 libdir = $(exec_prefix)/lib
 172 endif
 173 inst_libdir = $(install_root)$(libdir)
 174
 175 # Where to install the shared library and dynamic linker.
 176 ifndef slibdir
 177 slibdir = $(exec_prefix)/lib
 178 endif
 179 inst_slibdir = $(install_root)$(slibdir)
 180
 181 # Prefix to put on files installed in $(libdir).  For libraries `libNAME.a',
 182 # the prefix is spliced between `lib' and the name, so the linker switch
 183 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
 184 # just prepended to the whole file name.
 185 ifeq ($(origin libprefix),undefined)
 186 libprefix =
 187 endif
 188
 189 # Where to install the header files.
 190 ifndef includedir
 191 includedir = $(exec_prefix)/include
 192 endif
 193 inst_includedir = $(install_root)$(includedir)
 194
 195 # Where to install machine-independent data files.
 196 # These are the timezone database, and the locale database.
 197 ifndef datadir
 198 datadir = $(prefix)/share
 199 endif
 200 inst_datadir = $(install_root)$(datadir)
 201
 202 # Where to install the timezone data files (which are machine-independent).
 203 ifndef zonedir
 204 zonedir = $(datadir)/zoneinfo
 205 endif
 206 inst_zonedir = $(install_root)$(zonedir)
 207
 208 # Where to install the locale files.
 209 ifndef localedir
 210 localedir = $(libdir)/locale
 211 endif
 212 inst_localedir = $(install_root)$(localedir)
 213
 214 # Where to install the message catalog data files (which are
 215 # machine-independent).
 216 ifndef msgcatdir
 217 msgcatdir = $(datadir)/locale
 218 endif
 219 inst_msgcatdir = $(install_root)$(msgcatdir)
 220
 221 # Where to install the locale charmap source files.
 222 ifndef i18ndir
 223 i18ndir = $(datadir)/i18n
 224 endif
 225 inst_i18ndir = $(install_root)$(i18ndir)
 226
 227 # Where to install the shared object for charset transformation.
 228 ifndef gconvdir
 229 gconvdir = $(libdir)/gconv
 230 endif
 231 inst_gconvdir = $(install_root)$(gconvdir)
 232
 233 # Where to install programs.
 234 ifndef bindir
 235 bindir = $(exec_prefix)/bin
 236 endif
 237 inst_bindir = $(install_root)$(bindir)
 238
 239 # Where to install internal programs.
 240 ifndef libexecdir
 241 libexecdir = $(exec_prefix)/libexec
 242 endif
 243 inst_libexecdir = $(install_root)$(libexecdir)
 244
 245 # Where to install administrative programs.
 246 ifndef rootsbindir
 247 rootsbindir = $(exec_prefix)/sbin
 248 endif
 249 inst_rootsbindir = $(install_root)$(rootsbindir)
 250
 251 ifndef sbindir
 252 sbindir = $(exec_prefix)/sbin
 253 endif
 254 inst_sbindir = $(install_root)$(sbindir)
 255
 256 # Where to install the Info files.
 257 ifndef infodir
 258 infodir = $(prefix)/info
 259 endif
 260 inst_infodir = $(install_root)$(infodir)
 261
 262 # Where to install default configuration files.  These include the local
 263 # timezone specification and network data base files.
 264 ifndef sysconfdir
 265 sysconfdir = $(prefix)/etc
 266 endif
 267 inst_sysconfdir = $(install_root)$(sysconfdir)
 268
 269 # What timezone should be the installed default (e.g., US/Eastern).
 270 # Run `make -C time echo-zonenames' to see a list of available zone names.
 271 # The local timezone can be changed with `zic -l TIMEZONE' at any time.
 272 ifndef localtime
 273 localtime = Factory
 274 endif
 275
 276 # Where to install the "localtime" timezone file; this is the file whose
 277 # contents $(localtime) specifies.  If this is a relative pathname, it is
 278 # relative to $(zonedir).  It is a good idea to put this somewhere
 279 # other than there, so the zoneinfo directory contains only universal data,
 280 # localizing the configuration data elsewhere.
 281 ifndef localtime-file
 282 localtime-file = $(sysconfdir)/localtime
 283 inst_localtime-file = $(install_root)$(localtime-file)
 284 endif
 285
 286 # What to use for leap second specifications in compiling the default
 287 # timezone files.  Set this to `/dev/null' for no leap second handling as
 288 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
 289 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
 290 # This variable determines the default: if it's `/dev/null',
 291 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
 292 ifndef leapseconds
 293 leapseconds = /dev/null
 294 endif
 295
 296 # What timezone's DST rules should be used when a POSIX-style TZ
 297 # environment variable doesn't specify any rules.  For 1003.1 compliance
 298 # this timezone must use rules that are as U.S. federal law defines DST.
 299 # Run `make -C time echo-zonenames' to see a list of available zone names.
 300 # This setting can be changed with `zic -p TIMEZONE' at any time.
 301 # If you want POSIX.1 compatibility, use `America/New_York'.
 302 ifndef posixrules
 303 posixrules = America/New_York
 304 endif
 305
 306 # Where to install the "posixrules" timezone file; this is file
 307 # whose contents $(posixrules) specifies.  If this is a relative
 308 # pathname, it is relative to $(zonedir).
 309 ifndef posixrules-file
 310 posixrules-file = posixrules
 311 endif
 312
 313
 314 # Directory where your system's native header files live.
 315 # This is used on Unix systems to generate some GNU libc header files.
 316 ifndef sysincludedir
 317 sysincludedir = /usr/include
 318 endif
 319
 320
 321 # Commands to install files.
 322 ifndef INSTALL_DATA
 323 INSTALL_DATA = $(INSTALL) -m 644
 324 endif
 325 ifndef INSTALL_PROGRAM
 326 INSTALL_PROGRAM = $(INSTALL)
 327 endif
 328 ifndef INSTALL
 329 INSTALL = install
 330 endif
 331
 332
 333 # The name of the C compiler.
 334 # If you've got GCC, and it works, use it.
 335 ifeq ($(origin CC),default)
 336 CC := gcc
 337 endif
 338
 339 # The name of the C compiler to use for compilations of programs to run on
 340 # the host that is building the library.  If you set CC to a
 341 # cross-compiler, you must set this to the normal compiler.
 342 ifndef BUILD_CC
 343 BUILD_CC = $(CC)
 344 endif
 345
 346 # Default flags to pass the C compiler.
 347 ifndef default_cflags
 348 ifeq ($(release),stable)
 349 default_cflags := -g -O2
 350 else
 351 default_cflags := -g -O
 352 endif
 353 endif
 354
 355 # Flags to pass the C compiler when assembling preprocessed assembly code
 356 # (`.S' files).  On some systems the assembler doesn't understand the `#' line
 357 # directives the preprocessor produces.  If you have troubling compiling
 358 # assembly code, try using -P here to suppress these directives.
 359 ifndef asm-CPPFLAGS
 360 asm-CPPFLAGS =
 361 endif
 362
 363 # ELF always supports init/fini sections
 364 ifeq ($(elf),yes)
 365 have-initfini = yes
 366 endif
 367
 368 # Installed name of the startup code.
 369 ifneq ($(have-initfini),yes)
 370 # When not having init/fini, there is just one startfile, called crt0.o.
 371 start-installed-name = crt0.o
 372 else
 373 # On systems having init/fini, crt0.o is called crt1.o, and there are
 374 # some additional bizarre files.
 375 start-installed-name = crt1.o
 376 endif
 377 # On systems that do not need a special startfile for statically linked
 378 # binaries, simply set it to the normal name.
 379 ifndef static-start-installed-name
 380 static-start-installed-name = $(start-installed-name)
 381 endif
 382
 383 # Command for linking programs with the C library.
 384 ifndef +link
 385 +link = $(CC) -nostdlib -nostartfiles -o $@ \
 386               $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
 387               $(addprefix $(csu-objpfx),$(start-installed-name)) \
 388               $(+preinit) $(+prector) \
 389               $(filter-out $(addprefix $(csu-objpfx),start.o \
 390                                                      $(start-installed-name))\
 391                            $(+preinit) $(link-extra-libs) \
 392                            $(common-objpfx)libc% $(+postinit),$^) \
 393               $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
 394 endif
 395 # Command for statically linking programs with the C library.
 396 ifndef +link-static
 397 +link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
 398               $(sysdep-LDFLAGS) $(LDFLAGS)  \
 399               $(addprefix $(csu-objpfx),$(static-start-installed-name)) \
 400               $(+preinit) $(+prector) \
 401               $(filter-out $(addprefix $(csu-objpfx),start.o \
 402                                                      $(start-installed-name))\
 403                            $(+preinit) $(link-extra-libs-static) \
 404                            $(common-objpfx)libc% $(+postinit),$^) \
 405               $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
 406 endif
 407 # Command for statically linking bounded-pointer programs with the C library.
 408 ifndef +link-bounded
 409 +link-bounded = $(CC) -nostdlib -nostartfiles -static -fbounded-pointers -o $@ \
 410               $(sysdep-LDFLAGS) $(LDFLAGS)  \
 411               $(addprefix $(csu-objpfx),b$(static-start-installed-name)) \
 412               $(+preinit) $(+prector) \
 413               $(filter-out $(addprefix $(csu-objpfx),start.ob \
 414                                                      $(start-installed-name))\
 415                            $(+preinit) $(link-extra-libs-bounded) \
 416                            $(common-objpfx)libc% $(+postinit),$^) \
 417               $(link-extra-libs-bounded) $(link-libc-bounded) $(+postctor) $(+postinit)
 418 endif
 419 ifndef config-LDFLAGS
 420 ifeq (yes,$(build-shared))
 421 config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
 422 endif
 423 endif
 424 ifndef link-libc
 425 ifeq (yes,$(build-shared))
 426 # We need the versioned name of libc.so in the deps of $(others) et al
 427 # so that the symlink to libc.so is created before anything tries to
 428 # run the linked programs.
 429 link-libc = -Wl,-rpath-link=$(rpath-link) \
 430             $(common-objpfx)libc.so$(libc.so-version) \
 431             $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
 432 # This is how to find at build-time things that will be installed there.
 433 rpath-dirs = math elf dlfcn nss nis rt resolv crypt
 434 rpath-link = \
 435 $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
 436 elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf)
 437 else
 438 nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
 439 resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv)
 440 link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
 441 endif
 442 endif
 443
 444 # Choose the default search path for the dynamic linker based on
 445 # where we will install libraries.
 446 ifneq ($(libdir),$(slibdir))
 447 default-rpath = $(slibdir):$(libdir)
 448 else
 449 default-rpath = $(libdir)
 450 endif
 451
 452 ifndef link-extra-libs
 453 ifeq (yes,$(build-shared))
 454 ifneq ($(common-objpfx),$(objpfx))
 455 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\
 456         $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \
 457                    $(objpfx)$(lib).so$($(notdir $(lib)).so-version)))
 458 else
 459 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version))
 460 endif
 461 else
 462 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
 463 endif
 464 endif
 465
 466 # The static libraries.
 467 ifeq (yes,$(build-static))
 468 link-libc-static = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
 469 link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
 470 else
 471 ifeq (yes,$(build-shared))
 472 # We can try to link the programs with lib*_pic.a...
 473 link-libc-static = $(gnulib) $(common-objpfx)libc_pic.a
 474 link-extra-libs-static = $(link-extra-libs)
 475 endif
 476 endif
 477 link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
 478 link-extra-libs-bounded = $(foreach lib,$(LDLIBS-$(@F:%-bp=%)),$(common-objpfx)$(lib)_b.a)
 479
 480 ifndef gnulib
 481 gnulib := -lgcc
 482 endif
 483 ifeq ($(elf),yes)
 484 +preinit = $(addprefix $(csu-objpfx),crti.o)
 485 +postinit = $(addprefix $(csu-objpfx),crtn.o)
 486 +prector = `$(CC) --print-file-name=crtbegin.o`
 487 +postctor = `$(CC) --print-file-name=crtend.o`
 488 +interp = $(addprefix $(elf-objpfx),interp.os)
 489 endif
 490 csu-objpfx = $(common-objpfx)csu/
 491 elf-objpfx = $(common-objpfx)elf/
 492
 493 # How to run a program we just linked with our library.
 494 # The program binary is assumed to be $(word 2,$^).
 495 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
 496 ifeq (yes,$(build-shared))
 497 comma = ,
 498 sysdep-library-path = \
 499 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
 500                                        $(filter -Wl$(comma)-rpath-link=%,\
 501                                                 $(sysdep-LDFLAGS)))))
 502 run-program-prefix = $(if $(findstring $(notdir $(built-program-file)), $(tests-static)),, \
 503                           $(elf-objpfx)$(rtld-installed-name) \
 504                           --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)))
 505 else
 506 run-program-prefix =
 507 endif
 508 # Never use $(run-program-prefix) for the statically-linked %-bp test programs
 509 built-program-cmd = $(patsubst %,$(run-program-prefix),\
 510                         $(filter-out %-bp,$(built-program-file))) \
 511                     $(built-program-file)
 512
 513 ifndef LD
 514 LD := ld -X
 515 endif
 516
 517 ifndef  RANLIB
 518 RANLIB = ranlib
 519 endif
 520
 521 # Extra flags to pass to GCC.
 522 ifeq ($(all-warnings),yes)
 523 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar
 524 else
 525 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes
 526 endif
 527
 528 # This is the program that generates makefile
 529 # dependencies from C source files.
 530 ifndef +mkdep
 531 +mkdep = $(CC) -M
 532 endif
 533
 534 # The program that makes Emacs-style TAGS files.
 535 ETAGS   := etags
 536
 537 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
 538 # perhaps others) to preprocess assembly code in some cases.
 539 M4 = m4
 540
 541 # To force installation of files even if they are older than the
 542 # installed files.  This variable is included in the dependency list
 543 # of all installation targets.
 544 ifeq ($(force-install),yes)
 545 +force = force-install
 546 else
 547 +force =
 548 endif
 549
 550 ####
 551 #### End of configuration variables.
 552 ####
 553 \f
 554 # This tells some versions of GNU make before 3.63 not to export all variables.
 555 .NOEXPORT:
 556
 557 # We want to echo the commands we're running without
 558 # umpteen zillion filenames along with it (we use `...' instead)
 559 # but we don't want this echoing done when the user has said
 560 # he doesn't want to see commands echoed by using -s.
 561 ifneq   "$(findstring s,$(MAKEFLAGS))" ""       # if -s
 562 +cmdecho        := echo >/dev/null
 563 else                                            # not -s
 564 +cmdecho        := echo
 565 endif                                           # -s
 566
 567 # These are the flags given to the compiler to tell
 568 # it what sort of optimization and/or debugging output to do.
 569 ifndef  +cflags
 570 # If `CFLAGS' was defined, use that.
 571 ifdef           CFLAGS
 572 +cflags := $(filter-out -I%,$(CFLAGS))
 573 endif           # CFLAGS
 574 endif   # +cflags
 575
 576 # If none of the above worked, default to "-g -O".
 577 ifeq    "$(strip $(+cflags))" ""
 578 +cflags := $(default_cflags)
 579 endif   # $(+cflags) == ""
 580
 581 +cflags := $(+cflags) $(+gccwarn)
 582 +gcc-nowarn := -w
 583
 584 # Don't duplicate options if we inherited variables from the parent.
 585 +cflags := $(sort $(+cflags))
 586
 587
 588 # These are flags given to the C compiler to tell it to look for include
 589 # files (including ones given in angle brackets) in the current directory,
 590 # in the parent library source directory and in the include directory.
 591 # `+sysdep-includes' will be defined by Makerules.
 592 +includes = -I$(..)include -I. \
 593             $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \
 594             $($(stdio)-include) $(includes) \
 595             $(+sysdep-includes) $(last-includes) $(sysincludes)
 596
 597 # Since libio has several internal header files, we use a -I instead
 598 # of many little headers in the include directory.
 599 libio-include = -I$(..)libio
 600
 601 # These are the variables that the implicit compilation rules use.
 602 CPPFLAGS = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \
 603            -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
 604            $(CPPFLAGS-$(suffix $@)) $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F))
 605 override CFLAGS = $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
 606                   $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
 607
 608 # If everything is compiled with -fPIC (implicitly) we must tell this by
 609 # defining the PIC symbol.
 610 ifeq (yes,$(build-pic-default))
 611 pic-default = -DPIC
 612 endif
 613
 614 # Enable object files for different versions of the library.
 615 # Various things use $(object-suffixes) to know what all to make.
 616 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
 617 # to pass different flags for each flavor.
 618 libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
 619 all-object-suffixes := .o .os .op .og .ob .oS
 620 object-suffixes :=
 621 CPPFLAGS-.o = $(pic-default)
 622 CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
 623 ifeq (yes,$(build-static))
 624 libtype.o := lib%.a
 625 object-suffixes += .o
 626 endif
 627 ifeq (yes,$(build-shared))
 628 # Under --enable-shared, we will build a shared library of PIC objects.
 629 # The PIC object files are named foo.os.
 630 object-suffixes += .os
 631 CPPFLAGS-.os = -DPIC -DSHARED
 632 CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
 633 libtype.os := lib%_pic.a
 634 # This can be changed by a sysdep makefile
 635 pic-ccflag = -fPIC
 636 endif
 637 ifeq (yes,$(build-profile))
 638 # Under --enable-profile, we will build a static library of profiled objects.
 639 # The profiled object files are named foo.op.
 640 object-suffixes += .op
 641 CPPFLAGS-.op = -DPROF $(pic-default)
 642 CFLAGS-.op = -pg
 643 libtype.op = lib%_p.a
 644 endif
 645 ifeq (yes,$(build-omitfp))
 646 # Under --enable-omitfp, we build the library optimized without
 647 # debugging information using -fomit-frame-pointer, and build an extra
 648 # library with debugging information.  The debuggable objects are named foo.og.
 649 object-suffixes += .og
 650 CPPFLAGS-.og = $(pic-default)
 651 CFLAGS-.og = -g
 652 CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
 653 CFLAGS-.os += -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
 654 libtype.og = lib%_g.a
 655 endif
 656
 657 bppfx = BP-
 658 ifeq (yes,$(build-bounded))
 659 # Under --enable-bounded, we build the library with `-fbounded-pointers -g'
 660 # to runtime bounds checking.  The bounded-pointer objects are named foo.ob.
 661 # We disable sibling-call optimizations so that stack traces will be complete
 662 # and thus aid debugging, since after all, BPs are a debugging tool.
 663 object-suffixes += .ob
 664 CPPFLAGS-.ob = -fbounded-pointers $(pic-default)
 665 CFLAGS-.ob = -g -O2 -fno-optimize-sibling-calls -fno-strict-aliasing
 666 libtype.ob = lib%_b.a
 667 endif
 668
 669 object-suffixes-for-libc := $(object-suffixes)
 670
 671 ifeq (yes,$(build-shared))
 672 # Build special library that contains the static-only routines for libc.
 673 object-suffixes-for-libc += .oS
 674
 675 # Must build the routines as PIC, though, because they can end up in (users')
 676 # shared objects.  We don't want to use CFLAGS-os because users may, for
 677 # example, make that processor-specific.
 678 CFLAGS-.oS = $(CFLAGS-.o) $(pic-ccflag)
 679 CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC
 680 libtype.oS = lib%_nonshared.a
 681 endif
 682
 683
 684 +gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
 685
 686 ifndef BUILD_CC
 687 BUILD_CC = $(CC)
 688 endif
 689
 690 move-if-change = $(SHELL) $(..)scripts/move-if-change
 691 \f
 692 -include $(common-objpfx)sysd-dirs
 693
 694 ifeq ($(sysd-dirs-done),t)
 695 -include $(common-objpfx)sysd-sorted
 696 subdirs = $(sorted-subdirs)
 697 endif
 698
 699 ifeq (yes, $(build-shared))
 700
 701 # Commands to put in a pipeline to preprocess a file with # comments
 702 # %ifdef et al based on config.h settings or other %include'd files.
 703 define preprocess-versions
 704 sed '/^[        ]*#/d;s/^[      ]*%/#/' \
 705 | $(CC) -E -undef -I$(common-objdir) -I$(..)include \
 706                   -include $(common-objpfx)config.h \
 707                   -x assembler-with-cpp - \
 708 | sed '/^[      ]*#/d;/^[       ]*$$/d'
 709 endef
 710
 711 # Process the shlib-versions file, which tells us what shared library
 712 # version numbers to use when we install shared objects on this system.
 713 # We need to wait until $(subdirs) is complete.
 714 ifeq ($(sysd-sorted-done),t)
 715 -include $(common-objpfx)soversions.mk
 716 ifndef avoid-generated
 717 $(common-objpfx)soversions.i: $(..)shlib-versions $(..)Makeconfig \
 718                               $(wildcard $(patsubst %, $(..)%/shlib-versions,\
 719                                                        $(add-ons) \
 720                                                        $(subdirs))) \
 721                               $(common-objpfx)config.make
 722         cat $(filter-out $(..)Makeconfig $(common-objpfx)config.make,$^) \
 723         | $(preprocess-versions) \
 724         | while read conf version setname; do \
 725             test -n "$$version" && \
 726             test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
 727                        : "$$conf"` != 0 || continue; \
 728             if test "x$$version" = xDEFAULT; then \
 729               default_setname="$$setname"; \
 730             else \
 731               lib=`echo $$version | sed 's/=.*$$//'`; \
 732               if eval test -z "\$${versioned_$${lib}}"; then \
 733                 eval versioned_$${lib}=yes; \
 734                 number=`echo $$version | sed "s/^.*=//"`; \
 735                 echo $$lib $$number $${setname:-$${default_setname}}; \
 736               fi; \
 737             fi; \
 738           done > $@T; exit 0
 739         mv -f $@T $@
 740 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i
 741         (while read lib number setname; do \
 742            case $$number in \
 743              [0-9]*) echo "$$lib.so-version=.$$number"; \
 744                      echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
 745              *)      echo "$$lib.so-version=$$number"; \
 746                      echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
 747            esac; \
 748          done; \
 749          echo soversions.mk-done = t;) < $< > $@T; exit 0
 750         mv -f $@T $@
 751 endif
 752 endif
 753
 754 postclean-generated += soversions.mk
 755
 756 # Generate the header containing the names of all shared libraries.
 757 # We use a stamp file to avoid uncessary recompilations.
 758 before-compile += $(common-objpfx)gnu/lib-names.h
 759 ifeq ($(soversions.mk-done),t)
 760 $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @:
 761 $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk
 762         $(make-target-directory)
 763         @rm -f ${@:stmp=T} $@
 764         (echo '/* This file is automatically generated.';\
 765          echo '   It defines macros to allow user program to find the shared';\
 766          echo '   library files which come as part of GNU libc.  */';\
 767          echo '#ifndef __GNU_LIB_NAMES_H'; \
 768          echo '#define __GNU_LIB_NAMES_H        1'; \
 769          echo; \
 770          (libs='$(all-sonames)';\
 771           for l in $$libs; do \
 772             name=`echo $$l | sed 's/.*=//'`; \
 773             upname=`echo $$l | sed 's/=.*//' | \
 774                     tr 'abcdefghijklmnopqrstuvwxyz-' \
 775                        'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
 776             upname2=`echo $$name | sed 's/[.]so.*//' | \
 777                      tr 'abcdefghijklmnopqrstuvwxyz-' \
 778                         'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
 779             echo "#define       $${upname}_SO   \"$$name\""; \
 780             if test $$upname != $$upname2; then \
 781               echo "#define     $${upname2}_SO  \"$$name\""; \
 782             fi; \
 783           done;) | sort; \
 784          echo; \
 785          echo '#endif   /* gnu/lib-names.h */';) > ${@:stmp=T}
 786         $(move-if-change) ${@:stmp=T} ${@:stmp=h}
 787         touch $@
 788 endif
 789
 790 common-generated += gnu/lib-names.h gnu/lib-names.stmp
 791
 792 # The name under which the run-time dynamic linker is installed.
 793 # We are currently going for the convention that `/lib/ld.so.1'
 794 # names the SVR4/ELF ABI-compliant dynamic linker.
 795 ifndef rtld-installed-name
 796 ifdef ld.so-version
 797 rtld-installed-name = $(ld.so-version)
 798 else
 799 rtld-installed-name = ld.so.1
 800 endif
 801 endif
 802
 803 ifndef rtld-version-installed-name
 804 rtld-version-installed-name = ld-$(version).so
 805 endif
 806
 807 endif # build-shared
 808
 809 ifneq (,$(findstring linuxthreads,$(add-ons)))
 810 shared-thread-library = $(common-objpfx)linuxthreads/libpthread.so
 811 static-thread-library = $(common-objpfx)linuxthreads/libpthread.a
 812 bounded-thread-library = $(common-objpfx)linuxthreads/libpthread_b.a
 813 have-thread-library = yes
 814 rpath-dirs += linuxthreads
 815 endif
 816
 817 ifeq ($(elf),yes)
 818 dlfcn = dlfcn
 819 ifeq ($(build-shared),yes)
 820 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
 821 else
 822 libdl = $(common-objpfx)dlfcn/libdl.a
 823 endif
 824 else
 825 # No ELF - no libdl, at least for now.
 826 dlfcn =
 827 libdl =
 828 endif
 829
 830 # These are the subdirectories containing the library source.  The order
 831 # is more or less arbitrary.  The sorting step will take care of the
 832 # dependencies.  Only the $(binfmt-subdir) should always be kept at the
 833 # end of the list.
 834 all-subdirs = csu assert ctype locale intl catgets math setjmp signal       \
 835               stdlib stdio-common $(stdio) malloc string wcsmbs time dirent \
 836               grp pwd posix io termios resource misc socket sysvipc gmon    \
 837               gnulib iconv iconvdata wctype manual shadow po argp           \
 838               crypt $(add-ons) nss localedata timezone rt conform debug     \
 839               $(sysdep-subdirs) $(dlfcn) $(binfmt-subdir)
 840 all-subdirs := $(filter-out $(sysdep-inhibit-subdirs),$(all-subdirs))
 841
 842 # The mach and hurd subdirectories have many generated header files which
 843 # much of the rest of the library depends on, so it is best to build them
 844 # first (and mach before hurd, at that).  The before-compile additions in
 845 # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
 846 # not to exist when making in other directories, but it will be slower that
 847 # way with more somewhat expensive `make' invocations.
 848 subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
 849            $(filter-out mach hurd,$(subdirs))
 850
 851 ifndef avoid-generated
 852 all-Subdirs-files = $(wildcard $(config-sysdirs:%=$(..)%/Subdirs))
 853 $(common-objpfx)sysd-dirs: $(common-objpfx)config.make $(all-Subdirs-files)
 854         $(AWK) 'BEGIN { subdirs = ""; inhibit = "" };                   \
 855                 /^#/ { next };                                          \
 856                 /^[^-]/ { subdirs = subdirs " " $$0 };                  \
 857                 /^-/ { inhibit = inhibit " " substr($$0, 2) };          \
 858                 END { printf "sysdep-subdirs =%s\n", subdirs;           \
 859                       printf "sysdep-inhibit-subdirs =%s\n", inhibit;   \
 860                       print "sysd-dirs-done = t" }'                     \
 861                $(patsubst $<,/dev/null,$^) > $@-tmp
 862         mv -f $@-tmp $@
 863
 864 all-Depend-files = $(wildcard $(..)*/Depend)
 865 $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk $(all-Depend-files) \
 866                              $(common-objpfx)sysd-dirs $(..)Makeconfig
 867         { { dirs='$(patsubst $(..)%/Depend,$(..)%,$(filter %/Depend,$^))';\
 868             for d in $$dirs; do                                           \
 869               while read on; do                                           \
 870                 echo "depend $$d $$on";                                   \
 871               done < $$d/Depend;                                          \
 872             done;                                                         \
 873             for f in $(all-subdirs); do                                   \
 874               echo $$f;                                                   \
 875             done;                                                         \
 876           } | $(AWK) -f $< &&                                             \
 877           echo sysd-sorted-done = t;                                      \
 878         } > $@-tmp
 879         mv -f $@-tmp $@
 880 endif
 881
 882 endif # Makeconfig not yet included