Makeconfig

   1 # Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 full-config-sysdirs := $(filter /%, $(config-sysdirs)) \
  97                        $(addprefix $(..), $(filter-out /%, $(config-sysdirs)))
  98 export full-config-sysdirs := $(full-config-sysdirs)
  99
 100 # Run config.status to update config.make and config.h.  We don't show the
 101 # dependence of config.h to Make, because it is only touched when it
 102 # changes and so config.status would be run every time; the dependence of
 103 # config.make should suffice to force regeneration and re-exec, and the new
 104 # image will notice if config.h changed.
 105 $(common-objpfx)config.make: $(common-objpfx)config.status \
 106                              $(..)config.make.in $(..)config.h.in
 107         cd $(<D); $(SHELL) $(<F)
 108
 109 # Find all the sysdeps configure fragments, to make sure we re-run
 110 # configure when any of them changes.
 111 $(common-objpfx)config.status: $(..)version.h $(..)configure \
 112                                $(foreach dir,$(full-config-sysdirs),\
 113                                          $(wildcard \
 114                                            $(dir)/Implies) \
 115                                          $(patsubst %.in,%,\
 116                                                     $(firstword $(wildcard \
 117  $(addprefix $(dir)/,configure configure.in)))))
 118         @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
 119          echo The GNU C library has not been configured. >&2; \
 120          echo Run \`configure\' to configure it before building. >&2; \
 121          echo Try \`configure --help\' for more details. >&2; \
 122          exit 1; fi
 123
 124 # Get the user's configuration parameters.
 125 ifneq ($(wildcard $(..)configparms),)
 126 include $(..)configparms
 127 endif
 128 ifneq ($(objpfx),)
 129 ifneq ($(wildcard $(common-objpfx)configparms),)
 130 include $(common-objpfx)configparms
 131 endif
 132 endif
 133 \f
 134 ####
 135 ####    These are the configuration variables.  You can define values for
 136 ####    the variables below in the file `configparms'.
 137 ####    Do NOT edit this file.
 138 ####
 139
 140
 141 # Set this to either `stdio' or `libio', to compile in either GNU stdio
 142 # or GNU libio.
 143 ifndef stdio
 144 stdio = stdio
 145 endif
 146
 147 # Common prefix for machine-independent installation directories.
 148 ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
 149 prefix = /usr/local
 150 endif
 151
 152 # Decide whether we shall build the programs or not.  We always do this
 153 # unless the user tells us (in configparms) or we are building for a
 154 # standalone target.
 155 ifndef build-programs
 156 ifneq ($(config-os),none)
 157 build-programs=yes
 158 else
 159 build-programs=no
 160 endif
 161 endif
 162
 163 # Common prefix for machine-dependent installation directories.
 164 ifeq ($(origin exec_prefix),undefined)
 165 exec_prefix = $(prefix)
 166 endif
 167
 168 # Where to install the library and object files.
 169 ifndef libdir
 170 libdir = $(exec_prefix)/lib
 171 endif
 172 inst_libdir = $(install_root)$(libdir)
 173
 174 # Where to install the shared library and dynamic linker.
 175 ifndef slibdir
 176 slibdir = $(exec_prefix)/lib
 177 endif
 178 inst_slibdir = $(install_root)$(slibdir)
 179
 180 # Prefix to put on files installed in $(libdir).  For libraries `libNAME.a',
 181 # the prefix is spliced between `lib' and the name, so the linker switch
 182 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
 183 # just prepended to the whole file name.
 184 ifeq ($(origin libprefix),undefined)
 185 libprefix =
 186 endif
 187
 188 # Where to install the header files.
 189 ifndef includedir
 190 includedir = $(exec_prefix)/include
 191 endif
 192 inst_includedir = $(install_root)$(includedir)
 193
 194 # Where to install machine-independent data files.
 195 # These are the timezone database, and the locale database.
 196 ifndef datadir
 197 datadir = $(prefix)/share
 198 endif
 199 inst_datadir = $(install_root)$(datadir)
 200
 201 # Where to install the timezone data files (which are machine-independent).
 202 ifndef zonedir
 203 zonedir = $(datadir)/zoneinfo
 204 endif
 205 inst_zonedir = $(install_root)$(zonedir)
 206
 207 # Where to install the locale and message catalog data files (which are
 208 # machine-independent).
 209 ifndef localedir
 210 localedir = $(datadir)/locale
 211 endif
 212 inst_localedir = $(install_root)$(localedir)
 213
 214 # Where to install the locale charmap source files.
 215 ifndef i18ndir
 216 i18ndir = $(datadir)/i18n
 217 endif
 218 inst_i18ndir = $(install_root)$(i18ndir)
 219
 220
 221 # Where to install programs.
 222 ifndef bindir
 223 bindir = $(exec_prefix)/bin
 224 endif
 225 inst_bindir = $(install_root)$(bindir)
 226
 227 # Where to install administrative programs.
 228 ifndef rootsbindir
 229 rootsbindir = $(exec_prefix)/sbin
 230 endif
 231 inst_rootsbindir = $(install_root)$(rootsbindir)
 232
 233 ifndef sbindir
 234 sbindir = $(exec_prefix)/sbin
 235 endif
 236 inst_sbindir = $(install_root)$(sbindir)
 237
 238 # Where to install the Info files.
 239 ifndef infodir
 240 infodir = $(prefix)/info
 241 endif
 242 inst_infodir = $(install_root)$(infodir)
 243
 244 # Where to install default configuration files.  These include the local
 245 # timezone specification and network data base files.
 246 ifndef sysconfdir
 247 sysconfdir = $(prefix)/etc
 248 endif
 249 inst_sysconfdir = $(install_root)$(sysconfdir)
 250
 251 # What timezone should be the installed default (e.g., US/Eastern).
 252 # Run `make -C time echo-zonenames' to see a list of available zone names.
 253 # The local timezone can be changed with `zic -l TIMEZONE' at any time.
 254 ifndef localtime
 255 localtime = Factory
 256 endif
 257
 258 # Where to install the "localtime" timezone file; this is the file whose
 259 # contents $(localtime) specifies.  If this is a relative pathname, it is
 260 # relative to $(zonedir).  It is a good idea to put this somewhere
 261 # other than there, so the zoneinfo directory contains only universal data,
 262 # localizing the configuration data elsewhere.
 263 ifndef localtime-file
 264 localtime-file = $(sysconfdir)/localtime
 265 inst_localtime-file = $(install_root)$(localtime-file)
 266 endif
 267
 268 # What to use for leap second specifications in compiling the default
 269 # timezone files.  Set this to `/dev/null' for no leap second handling as
 270 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
 271 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
 272 # This variable determines the default: if it's `/dev/null',
 273 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
 274 ifndef leapseconds
 275 leapseconds = /dev/null
 276 endif
 277
 278 # What timezone's DST rules should be used when a POSIX-style TZ
 279 # environment variable doesn't specify any rules.  For 1003.1 compliance
 280 # this timezone must use rules that are as U.S. federal law defines DST.
 281 # Run `make -C time echo-zonenames' to see a list of available zone names.
 282 # This setting can be changed with `zic -p TIMEZONE' at any time.
 283 # If you want POSIX.1 compatibility, use `America/New_York'.
 284 ifndef posixrules
 285 posixrules = America/New_York
 286 endif
 287
 288 # Where to install the "posixrules" timezone file; this is file
 289 # whose contents $(posixrules) specifies.  If this is a relative
 290 # pathname, it is relative to $(zonedir).
 291 ifndef posixrules-file
 292 posixrules-file = posixrules
 293 endif
 294
 295
 296 # Directory where your system's native header files live.
 297 # This is used on Unix systems to generate some GNU libc header files.
 298 ifndef sysincludedir
 299 sysincludedir = /usr/include
 300 endif
 301
 302
 303 # Commands to install files.
 304 ifndef INSTALL_DATA
 305 INSTALL_DATA = $(INSTALL) -m 644
 306 endif
 307 ifndef INSTALL_PROGRAM
 308 INSTALL_PROGRAM = $(INSTALL)
 309 endif
 310 ifndef INSTALL
 311 INSTALL = install
 312 endif
 313
 314
 315 # The name of the C compiler.
 316 # If you've got GCC, and it works, use it.
 317 ifeq ($(origin CC),default)
 318 CC := gcc
 319 endif
 320
 321 # The name of the C compiler to use for compilations of programs to run on
 322 # the host that is building the library.  If you set CC to a
 323 # cross-compiler, you must set this to the normal compiler.
 324 ifndef BUILD_CC
 325 BUILD_CC = $(CC)
 326 endif
 327
 328 # Default flags to pass the C compiler.
 329 ifndef default_cflags
 330 default_cflags := -g -O
 331 endif
 332
 333 # Flags to pass the C compiler when assembling preprocessed assembly code
 334 # (`.S' files).  On some systems the assembler doesn't understand the `#' line
 335 # directives the preprocessor produces.  If you have troubling compiling
 336 # assembly code, try using -P here to suppress these directives.
 337 ifndef asm-CPPFLAGS
 338 asm-CPPFLAGS =
 339 endif
 340
 341 # Installed name of the startup code.
 342 ifneq ($(elf),yes)
 343 # When not using ELF, there is just one startfile, called crt0.o.
 344 start-installed-name = crt0.o
 345 else
 346 # In the ELF universe, crt0.o is called crt1.o, and there are
 347 # some additional bizarre files.
 348 start-installed-name = crt1.o
 349 have-initfini = yes
 350 endif
 351
 352
 353 # Command for linking programs with the C library.
 354 ifndef +link
 355 +link = $(CC) -nostdlib -nostartfiles -o $@ \
 356               $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS)  \
 357               $(addprefix $(csu-objpfx),$(start-installed-name)) \
 358               $(+preinit) $(+prector) \
 359               $(filter-out $(addprefix $(csu-objpfx),start.o \
 360                                                      $(start-installed-name))\
 361                            $(+preinit) $(link-extra-libs) \
 362                            $(common-objpfx)libc% $(+postinit),$^) \
 363               $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
 364 endif
 365 ifndef config-LDFLAGS
 366 ifeq (yes,$(build-shared))
 367 config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
 368 endif
 369 endif
 370 ifndef link-libc
 371 ifeq (yes,$(build-shared))
 372 # We need the versioned name of libc.so in the deps of $(others) et al
 373 # so that the symlink to libc.so is created before anything tries to
 374 # run the linked programs.
 375 link-libc = -Wl,-rpath-link=$(rpath-link) \
 376             $(common-objpfx)libc.so$(libc.so-version) \
 377             $(elfobjdir)/$(rtld-installed-name) \
 378             $(common-objpfx)libc.a $(gnulib)
 379 # Choose the default search path for the dynamic linker based on
 380 # where we will install libraries.
 381 ifneq ($(libdir),$(slibdir))
 382 default-rpath = $(slibdir):$(libdir)
 383 else
 384 default-rpath = $(libdir)
 385 endif
 386 # This is how to find at build-time things that will be installed there.
 387 rpath-link = $(common-objdir):$(mathobjdir):$(elfobjdir):$(nssobjdir):$(dbobjdir)
 388 mathobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)math)
 389 elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf)
 390 nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
 391 dbobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)db)
 392 else
 393 link-libc = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
 394 endif
 395 endif
 396
 397 ifndef link-extra-libs
 398 ifeq (yes,$(build-shared))
 399 ifneq ($(common-objpfx),$(objpfx))
 400 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\
 401         $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \
 402                    $(objpfx)$(lib).so$($(notdir $(lib)).so-version)))
 403 else
 404 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version))
 405 endif
 406 else
 407 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
 408 endif
 409 endif
 410 ifndef gnulib
 411 gnulib := -lgcc
 412 endif
 413 ifeq ($(elf),yes)
 414 +preinit = $(addprefix $(csu-objpfx),crti.o)
 415 +postinit = $(addprefix $(csu-objpfx),crtn.o)
 416 +prector = `$(CC) --print-file-name=crtbegin.o`
 417 +postctor = `$(CC) --print-file-name=crtend.o`
 418 endif
 419 csu-objpfx = $(common-objpfx)csu/
 420 elf-objpfx = $(common-objpfx)elf/
 421 db-objpfx = $(common-objpfx)db/
 422
 423 # How to run a program we just linked with our library.
 424 # The program binary is assumed to be $(word 2,$^).
 425 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
 426 ifneq (yes,$(build-shared))
 427 built-program-cmd = $(built-program-file)
 428 else
 429 comma = ,
 430 sysdep-library-path = \
 431 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
 432                                        $(filter -Wl$(comma)-rpath-link=%,\
 433                                                 $(sysdep-LDFLAGS)))))
 434 define built-program-cmd
 435 LD_LIBRARY_PATH=$(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
 436 $(elf-objpfx)$(rtld-installed-name) $(built-program-file)
 437 endef
 438 endif
 439
 440 ifndef LD
 441 LD := ld -X
 442 endif
 443
 444 ifndef  RANLIB
 445 RANLIB = ranlib
 446 endif
 447
 448 # Extra flags to pass to GCC.
 449 +gccwarn := -Wall -Wwrite-strings -Wno-parentheses -Winline -Wstrict-prototypes
 450
 451 # This is the program that generates makefile
 452 # dependencies from C source files.
 453 ifndef +mkdep
 454 +mkdep = $(CC) -M
 455 endif
 456
 457 # The program that makes Emacs-style TAGS files.
 458 ETAGS   := etags -T
 459
 460 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
 461 # perhaps others) to preprocess assembly code in some cases.
 462 M4 = m4
 463
 464 ####
 465 #### End of configuration variables.
 466 ####
 467 \f
 468 # This tells some versions of GNU make before 3.63 not to export all variables.
 469 .NOEXPORT:
 470
 471 # We want to echo the commands we're running without
 472 # umpteen zillion filenames along with it (we use `...' instead)
 473 # but we don't want this echoing done when the user has said
 474 # he doesn't want to see commands echoed by using -s.
 475 ifneq   "$(findstring s,$(MAKEFLAGS))" ""       # if -s
 476 +cmdecho        := echo >/dev/null
 477 else                                            # not -s
 478 +cmdecho        := echo
 479 endif                                           # -s
 480
 481 # These are the flags given to the compiler to tell
 482 # it what sort of optimization and/or debugging output to do.
 483 ifndef  +cflags
 484 # If `CFLAGS' was defined, use that.
 485 ifdef           CFLAGS
 486 +cflags := $(filter-out -I%,$(CFLAGS))
 487 endif           # CFLAGS
 488 endif   # +cflags
 489
 490 # If none of the above worked, default to "-g -O".
 491 ifeq    "$(strip $(+cflags))" ""
 492 +cflags := $(default_cflags)
 493 endif   # $(+cflags) == ""
 494
 495 +cflags := $(+cflags) $(+gccwarn)
 496 +gcc-nowarn := -w
 497
 498 # Don't duplicate options if we inherited variables from the parent.
 499 +cflags := $(sort $(+cflags))
 500
 501
 502 # These are flags given to the C compiler to tell it to look for include
 503 # files (including ones given in angle brackets) in the current directory,
 504 # in the parent library source directory and in the include directory.
 505 # `+sysdep-includes' will be defined by Makerules.
 506 +includes = -I. $(patsubst %/,-I%,$(..)) -I$(..)include $($(stdio)-include) \
 507             $(includes) $(+sysdep-includes) $(last-includes)
 508
 509 # Since libio has several internal header files, we use a -I instead
 510 # of many little headers in the include directory.
 511 libio-include = -I$(..)libio
 512
 513 # These are the variables that the implicit compilation rules use.
 514 CPPFLAGS = $(+includes) $(defines) -include $(..)include/libc-symbols.h \
 515            $(sysdep-CPPFLAGS) $(CPPFLAGS-$(suffix $@)) $(CPPFLAGS-$(<F)) \
 516            $(CPPFLAGS-$(@F))
 517 override CFLAGS = $(+cflags) $(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) \
 518                   $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
 519
 520
 521 # This is the macro that the implicit linking rules use.
 522 ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags)
 523 LDFLAGS := -g
 524 endif
 525
 526
 527 # Enable object files for different versions of the library.
 528 # Various things use $(object-suffixes) to know what all to make.
 529 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
 530 # to pass different flags for each flavor.
 531 libtypes = $(foreach o,$(object-suffixes),$(libtype$o))
 532 object-suffixes := .o
 533 all-object-suffixes := .o .os .op .og .ob
 534 libtype.o := lib%.a
 535 ifeq (yes,$(build-shared))
 536 # Under --enable-shared, we will build a shared library of PIC objects.
 537 # The PIC object files are named foo.os.
 538 object-suffixes += .os
 539 CPPFLAGS-.os = -DPIC
 540 CFLAGS-.os = -fPIC -fno-common
 541 libtype.os := lib%_pic.a
 542 endif
 543 ifeq (yes,$(build-profile))
 544 # Under --enable-profile, we will build a static library of profiled objects.
 545 # The profiled object files are named foo.op.
 546 object-suffixes += .op
 547 CPPFLAGS-.op = -DPROF
 548 CFLAGS-.op = -pg
 549 libtype.op = lib%_p.a
 550 endif
 551 ifeq (yes,$(build-omitfp))
 552 # Under --enable-omitfp, we build an the library optimized without
 553 # debugging information using -fomit-frame-pointer, and build an extra
 554 # library with debugging information.  The debuggable objects are named foo.og.
 555 object-suffixes += .og
 556 CFLAGS-.og = -g
 557 CFLAGS-.o = -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
 558 CFLAGS-.os += $(CFLAGS-.o)
 559 libtype.og = lib%_g.a
 560 endif
 561 ifeq (yes,$(build-bounded))
 562 # Under --enable-bounded, we build the library with `-fbounded-pointers -g'
 563 # to runtime bounds checking.  The bounded-pointer objects are named foo.ob.
 564 object-suffixes += .ob
 565 CPPFLAGS-.ob = -DBOUNDED_POINTERS
 566 CFLAGS-.ob = -g -fbounded-pointers
 567 libtype.ob = lib%_b.a
 568 endif
 569
 570
 571 +gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
 572
 573 ifndef BUILD_CC
 574 BUILD_CC = $(CC)
 575 endif
 576 \f
 577 # Figure out the version numbers from version.h.
 578
 579 $(common-objpfx)version.mk: $(..)version.h $(..)Makeconfig
 580         sed -n -e 's/^.*RELEASE.*"\([^"]*\)".*$$/release=\1/p' \
 581                -e 's/^.*VERSION.*"\([^"]*\)".*$$/version=\1/p' \
 582             < $< > $@-new
 583         mv -f $@-new $@
 584
 585 ifeq (yes, $(build-shared))
 586
 587 # Process the shlib-versions file, which tells us what shared library
 588 # version numbers to use when we install shared objects on this system.
 589 -include $(common-objpfx)soversions.mk
 590 $(common-objpfx)soversions.mk: $(..)shlib-versions $(..)Makeconfig \
 591                                $(wildcard $(patsubst %, $(..)%/shlib-versions,\
 592                                                         $(add-ons))) \
 593                                $(common-objpfx)config.make
 594         (file="$(wildcard $(patsubst %,$(..)%/shlib-versions,$(add-ons))) \
 595                $(..)shlib-versions"; \
 596          for f in $$file; do \
 597            sed 's/#.*$$//' $$f | while read conf versions; do \
 598              test -n "$$versions" && \
 599              test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
 600                         : "$$conf"` != 0 || continue; \
 601              for v in $$versions; do \
 602                lib=`echo $$v | sed 's/=.*$$//'`; \
 603                if eval "test -z \"\$$vers_lib$$lib\""; then \
 604                  eval vers_lib$${lib}=yes; \
 605                  number=`echo $$v | sed "s/^.*=//"`; \
 606                  case $$number in \
 607                    [0-9]*) echo "$$lib.so-version=.$$number"; \
 608                            echo "all-sonames+=$$lib.so\$$($$lib.so-version)";;\
 609                    *) echo "$$lib.so-version=$$number"; \
 610                       echo "all-sonames+=\$$($$lib.so-version)";;  \
 611                  esac; \
 612                fi; \
 613              done; \
 614            done; \
 615          done;) > $@T; exit 0
 616         mv -f $@T $@
 617
 618 # Get $(version) defined with the release version number.
 619 -include $(common-objpfx)version.mk
 620
 621 # Generate the header containing the names of all shared libraries.
 622 # We use a stamp file to avoid uncessary recompilations.
 623 before-compile += $(common-objpfx)gnu/lib-names.h
 624 $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp
 625 $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk
 626         $(make-target-directory)
 627         @rm -f ${@:stmp=T} $@
 628         (echo '/* This file is automatically generated.';\
 629          echo '   It defines macros to allow user program to find the shared';\
 630          echo '   library files which come as part of GNU libc.  */';\
 631          echo '#ifndef __GNU_LIB_NAMES_H'; \
 632          echo '#define __GNU_LIB_NAMES_H        1'; \
 633          echo; \
 634          (libs='$(all-sonames)';\
 635           for l in $$libs; do \
 636             upname=`echo $$l | sed 's/[.]so.*//' | \
 637                     tr 'abcdefghijklmnopqrstuvwxyz-' \
 638                        'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
 639             echo "#define       $${upname}_SO   \"$$l\""; \
 640           done;) | sort; \
 641          echo; \
 642          echo '#endif   /* gnu/lib-names.h */';) > ${@:stmp=T}
 643         if test -r ${@:stmp=h} && cmp -s ${@:stmp=h} ${@:stmp=T}; \
 644         then rm -f ${@:stmp=T}; \
 645         else mv -f ${@:stmp=T} ${@:stmp=h}; fi
 646         touch $@
 647
 648 common-generated += gnu/lib-names.h gnu/lib-names.stmp
 649
 650 # The name under which the run-time dynamic linker is installed.
 651 # We are currently going for the convention that `/lib/ld.so.1'
 652 # names the SVR4/ELF ABI-compliant dynamic linker.
 653 ifndef rtld-installed-name
 654 ifdef ld.so-version
 655 rtld-installed-name = $(ld.so-version)
 656 else
 657 rtld-installed-name = ld.so.1
 658 endif
 659 endif
 660
 661 ifndef rtld-version-installed-name
 662 rtld-version-installed-name = ld-$(version).so
 663 endif
 664
 665 endif # build-shared
 666
 667 endif # Makeconfig not yet included