Makerules

   1 # Copyright (C) 1991,92,93,94,95,96,97,98,99,2000
   2 #       Free Software Foundation, Inc.
   3 # This file is part of the GNU C Library.
   4
   5 # The GNU C Library is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU Library General Public License as
   7 # published by the Free Software Foundation; either version 2 of the
   8 # License, or (at your option) any later version.
   9
  10 # The GNU C Library is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # Library General Public License for more details.
  14
  15 # You should have received a copy of the GNU Library General Public
  16 # License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18 # Boston, MA 02111-1307, USA.
  19
  20 #
  21 #       Common rules for making the GNU C library.  This file is included
  22 #       by the top-level Makefile and by all subdirectory makefiles
  23 #       (through Rules).
  24 #
  25 ifneq (,)
  26 This makefile requires GNU Make.
  27 endif
  28
  29 REQUIRED_MAKE_VERSION = 3.74
  30 REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION))
  31
  32 ifneq ($(REQUIRED_MAKE_VERSION), \
  33        $(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
  34 Wrong GNU Make version.  See above for the version needed.
  35 endif
  36
  37
  38 ifdef   subdir
  39 ..      := ../
  40 endif   # subdir
  41
  42 # If `sources' was defined by the parent makefile, undefine it so
  43 # we will later get it from wildcard search in this directory.
  44 ifneq   "$(findstring env,$(origin sources))" ""
  45 sources :=
  46 endif
  47
  48 oPATH := $(PATH)
  49 PATH := this definition should take precedence over $(oPATH)
  50 ifeq ($(PATH),$(oPATH))
  51 You must not use the -e flag when building the GNU C library.
  52 else
  53 PATH := $(oPATH)
  54 endif
  55 \f
  56 ifndef +included-Makeconfig
  57 include $(..)Makeconfig
  58 endif
  59
  60 # `configure' writes a definition of `config-sysdirs' in `config.make'.
  61 sysdirs = $(strip $(full-config-sysdirs))
  62
  63 +sysdir_pfx = $(common-objpfx)
  64
  65 export sysdirs := $(sysdirs)
  66
  67 +sysdep_dirs := $(full-config-sysdirs)
  68 ifdef objdir
  69 +sysdep_dirs := $(objdir) $(+sysdep_dirs)
  70 endif
  71
  72 # Add -I switches to get the right sysdep directories.
  73 # `+includes' in Makeconfig references $(+sysdep-includes).
  74 +sysdep-includes := $(addprefix -I,$(+sysdep_dirs))
  75
  76 # This variable is used in ``include $(o-iterator)'' after defining
  77 # $(o-iterator-doit) to produce some desired rule using $o for the object
  78 # suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
  79 # is produced for each object suffix in use.
  80 o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
  81 \f
  82 # Include any system-specific makefiles.
  83
  84 # This is here so things in sysdep Makefiles can easily depend on foo.h as
  85 # appropriate and not worry about where foo.h comes from, which may be
  86 # system dependent and not known by that Makefile.
  87 vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
  88                                       $(+sysdep_dirs) $(..)))
  89
  90 # The same is true for RPC source files.
  91 vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
  92                                       $(+sysdep_dirs) $(..)))
  93
  94 # Some sysdep makefiles use this to distinguish being included here from
  95 # being included individually by a subdir makefile (hurd/Makefile needs this).
  96 in-Makerules := yes
  97
  98 -include $(+sysdir_pfx)sysd-Makefile
  99 ifndef avoid-generated
 100 ifneq ($(sysd-Makefile-sysdirs),$(config-sysdirs))
 101 sysd-Makefile-force = FORCE
 102 FORCE:
 103 endif
 104 $(+sysdir_pfx)sysd-Makefile: $(+sysdir_pfx)config.make $(..)Makerules \
 105                              $(sysd-Makefile-force)
 106         -@rm -f $@T
 107         (echo 'sysd-Makefile-sysdirs := $(config-sysdirs)';                   \
 108          for file in $(config-sysdirs:=/Makefile); do                         \
 109            if [ -f $(..)$$file ]; then                                        \
 110              echo include "\$$(..)$$file";                                    \
 111            else true; fi;                                                     \
 112          done;                                                                \
 113          echo 'sysd-Makefile-done=t') > $@T
 114         mv -f $@T $@
 115 endif
 116
 117 ifndef sysd-Makefile-done
 118 # Don't do deps until this exists, because it might change the sources list.
 119 no_deps=t
 120 endif
 121
 122
 123 # Reorder before-compile so that mach things come first, and hurd things
 124 # second, before all else.  The mach and hurd subdirectories have many
 125 # generated header files which the much of rest of the library depends on,
 126 # so it is best to build them first (and mach before hurd, at that).
 127 before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
 128                            $(before-compile)) \
 129                   $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
 130                                $(before-compile))
 131
 132 # Even before that, we need abi-versions.h which is generated right here.
 133 ifeq ($(versioning),yes)
 134 ifndef avoid-generated
 135 before-compile := $(common-objpfx)abi-versions.h $(before-compile)
 136 $(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
 137                                 $(common-objpfx)Versions.all
 138         LC_ALL=C $(AWK) -f $^ > $@T
 139         mv -f $@T $@
 140 endif # avoid-generated
 141 endif # $(versioning) = yes
 142
 143
 144 # Remove existing files from `before-compile'.  Things are added there when
 145 # they must exist for dependency generation to work right, but once they
 146 # exist there is no further need for every single file to depend on them,
 147 # and those gratuitous dependencies result in many gratuitous
 148 # recompilations.
 149 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 150
 151 # Don't let any before-compile file be an intermediate and get removed.
 152 ifdef before-compile
 153 $(before-compile):
 154 endif
 155 \f
 156 # Generate an ordered list of implicit rules which find the source files in
 157 # each sysdep directory.  The old method was to use vpath to search all the
 158 # sysdep directories.  However, that had the problem that a .S file in a
 159 # later directory would be chosen over a .c file in an earlier directory,
 160 # which does not preserve the desired sysdeps ordering behavior.
 161
 162 # When making the list of .d files to include, we can't know which ones
 163 # have source in .s files, and thus do not in fact need a .d file.
 164 # So we must define rules to make .d files for .s files.
 165 define make-dummy-dep
 166 $(addprefix ln $(common-objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
 167 endef
 168 $(common-objpfx)dummy.d:
 169         echo '# .s files cannot contain includes, so they need no deps.' > $@
 170
 171 # It matters that this set of rules, for compiling from sources in
 172 # the current directory (the $srcdir/$subdir) come before the
 173 # generated sysdep rules in included from sysd-rules below.  When
 174 # compiling in the source tree, generated sources go into the current
 175 # directory, and those should be chosen before any sources in sysdeps.
 176 define o-iterator-doit
 177 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 178 endef
 179 object-suffixes-left := $(all-object-suffixes)
 180 include $(o-iterator)
 181 $(objpfx)%.d: %.S $(before-compile); $(+make-deps)
 182
 183 define o-iterator-doit
 184 $(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
 185 endef
 186 object-suffixes-left := $(all-object-suffixes)
 187 include $(o-iterator)
 188 $(objpfx)%.d: %.s $(common-objpfx)dummy.d; $(make-dummy-dep)
 189
 190 define o-iterator-doit
 191 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 192 endef
 193 object-suffixes-left := $(all-object-suffixes)
 194 include $(o-iterator)
 195 $(objpfx)%.d: %.c $(before-compile); $(+make-deps)
 196
 197 # Omit the objpfx rules when building in the source tree, because
 198 # objpfx is empty and so these rules just override the ones above.
 199 ifdef objpfx
 200 # Define first rules to find the source files in $(objpfx).
 201 # Generated source files will end up there.
 202 define o-iterator-doit
 203 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 204 endef
 205 object-suffixes-left := $(all-object-suffixes)
 206 include $(o-iterator)
 207 $(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
 208
 209 define o-iterator-doit
 210 $(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
 211 endef
 212 object-suffixes-left := $(all-object-suffixes)
 213 include $(o-iterator)
 214 $(objpfx)%.d: $(objpfx)%.s $(common-objpfx)dummy.d; $(make-dummy-dep)
 215
 216 define o-iterator-doit
 217 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 218 endef
 219 object-suffixes-left := $(all-object-suffixes)
 220 include $(o-iterator)
 221 $(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
 222 endif
 223
 224 # System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
 225 # patterns matching sysdep directories whose assembly source files should
 226 # be suppressed.
 227 ifdef inhibit-sysdep-asm
 228 define open-check-inhibit-asm
 229 case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
 230 endef
 231 close-check-inhibit-asm = ;; esac ;
 232 endif
 233
 234 # Don't include sysd-rules until sysd-Makefile is already there and has been
 235 # included.  It might define inhibit-sysdep-asm, which would affect the
 236 # contents of sysd-rules.
 237 ifdef sysd-Makefile-done
 238 -include $(+sysdir_pfx)sysd-rules
 239 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 240 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 241 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 242 sysd-rules-force = FORCE
 243 FORCE:
 244 endif
 245 endif
 246 $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
 247                           $(wildcard $(foreach dir,$(sysdirs),\
 248                                                $(dir)/Makefile))\
 249                           $(sysd-rules-force)
 250         -@rm -f $@T
 251         (echo 'sysd-rules-sysdirs := $(config-sysdirs)';                      \
 252          for dir in $(config-sysdirs:%='$$(..)%'); do                         \
 253            for o in $(all-object-suffixes); do \
 254              $(open-check-inhibit-asm) \
 255              echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
 256                   \$$(compile-command.S)";                                    \
 257              echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
 258                   \$$(compile-command.s)";                                    \
 259              $(close-check-inhibit-asm) \
 260              echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
 261                   \$$(compile-command.c)";                                    \
 262            done; \
 263            $(open-check-inhibit-asm) \
 264            echo "\$$(objpfx)%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
 265                 \$$(make-dummy-dep)";                          \
 266            echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
 267                 \$$(+make-deps)";                                             \
 268            $(close-check-inhibit-asm)   \
 269            echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
 270                 \$$(+make-deps)";                                             \
 271          done;                                                                \
 272          echo 'sysd-rules-done = t') > $@T
 273         mv -f $@T $@
 274
 275 ifndef sysd-rules-done
 276 # Don't do deps until this exists, because it provides rules to make the deps.
 277 no_deps=t
 278 endif
 279
 280 # Generate version maps, but wait until sysdep-subdirs is known
 281 ifdef sysd-dirs-done
 282 ifeq ($(versioning),yes)
 283 -include $(common-objpfx)sysd-versions
 284 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 285 common-generated += $(version-maps)
 286 postclean-generated += sysd-versions Versions.all
 287
 288 ifndef avoid-generated
 289 ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
 290 sysd-versions-force = FORCE
 291 FORCE:
 292 endif
 293 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 294                               $(..)Versions.def \
 295                               $(wildcard $(add-ons:%=$(..)%/Versions.def)) \
 296                               $(common-objpfx)soversions.mk
 297         { $(foreach map,$(map-firstversions),echo '$(subst :, : ,$(map))';) \
 298           cat $(filter-out $< $(common-objpfx)soversions.mk,$^); \
 299         } | LC_ALL=C $(AWK) -f $< > $@T
 300         mv -f $@T $@
 301 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
 302                                $(..)scripts/versions.awk \
 303                                $(wildcard $(all-subdirs:%=$(..)%/Versions)) \
 304                                $(wildcard $(sysdirs:%=%/Versions)) \
 305                                $(sysd-versions-force)
 306         { echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
 307           LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 308                  -v move_if_change='$(move-if-change)' \
 309                  -f $(filter-out $< $(sysd-versions-force),$^); \
 310         } > $@T
 311         mv -f $@T $@
 312 endif # avoid-generated
 313 endif # $(versioning) = yes
 314 endif # sysd-dirs-done
 315
 316
 317 ifndef compile-command.S
 318 compile-command.S = $(compile.S) $(OUTPUT_OPTION)
 319 endif
 320 ifndef compile-command.s
 321 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
 322 endif
 323 ifndef compile-command.c
 324 compile-command.c = $(compile.c) $(OUTPUT_OPTION)
 325 endif
 326
 327 # GCC can grok options after the file name, and it looks nicer that way.
 328 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 329 compile.S = \
 330   $(CC) $< -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 331 COMPILE.S = \
 332   $(CC) -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 333 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
 334
 335 # We need this for the output to go in the right place.  It will default to
 336 # empty if make was configured to work with a cc that can't grok -c and -o
 337 # together.  You can't compile the C library with such a compiler.
 338 OUTPUT_OPTION = -o $@
 339
 340 S-CPPFLAGS = $(asm-CPPFLAGS)
 341 define +make-deps
 342 $(make-target-directory)
 343 -@rm -f $@
 344 $(+mkdep) $< $(CFLAGS) $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
 345 sed \
 346 -e 's,$(subst .,\.,$*)\.o,$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 347 $(sed-remove-objpfx) > $(@:.d=.T)
 348 mv -f $(@:.d=.T) $@
 349 endef
 350 ifneq (,$(objpfx))
 351 # Continuation lines here are dangerous because they introduce spaces!
 352 define sed-remove-objpfx
 353 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 354 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 355 endef
 356 endif
 357 \f
 358 # Shared library building.
 359
 360 ifeq (yes,$(build-shared))
 361
 362 # Reference map file only when versioning is selected and a map file name
 363 # is given.
 364 ifeq ($(versioning),yes)
 365 map-file = $(firstword $($(@F:.so=-map)) \
 366                        $(addprefix $(common-objpfx), \
 367                                    $(filter $(@F:.so=.map),$(version-maps))))
 368 load-map-file = $(map-file:%=-Wl,--version-script=%)
 369 endif
 370
 371 # Pattern rule to build a shared object from an archive of PIC objects.
 372 # This must come after the installation rules so Make doesn't try to
 373 # build shared libraries in place from the installed *_pic.a files.
 374 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 375 # on other shared objects.
 376 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
 377         $(build-shlib)
 378
 379 define build-shlib
 380 $(LINK.o) -shared -Wl,-O1 -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS)  \
 381           -B$(csu-objpfx) $(load-map-file) \
 382           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 383           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 384           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
 385           -Wl,--whole-archive \
 386           $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 387           $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
 388 endef
 389
 390 # This macro is similar to build-shlib but it does not define a soname
 391 # and it does not depend on the destination name to start with `lib'.
 392 define build-module
 393 $(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS)  \
 394           -B$(csu-objpfx) $(load-map-file) \
 395           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 396           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
 397           -Wl,--whole-archive \
 398           $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 399           $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
 400 endef
 401
 402 ifndef libc.so-version
 403 # Undefine this because it can't work when we libc.so is unversioned.
 404 static-only-routines =
 405 endif
 406
 407 elide-routines.oS += $(filter-out $(static-only-routines),\
 408                                   $(routines) $(aux) $(sysdep_routines))
 409 elide-routines.os += $(static-only-routines)
 410
 411 # If we have versioned code we don't need the old versions in any of the
 412 # static libraries.
 413 elide-routines.o  += $(shared-only-routines)
 414 elide-routines.op += $(shared-only-routines)
 415 elide-routines.og += $(shared-only-routines)
 416 elide-routines.ob += $(shared-only-routines)
 417
 418 # Don't try to use -lc when making libc.so itself.
 419 # Also omits crti.o and crtn.o, which we do not want
 420 # since we define our own `.init' section specially.
 421 LDFLAGS-c.so = -nostdlib -nostartfiles
 422 # But we still want to link libc.so against $(gnulib).
 423 LDLIBS-c.so += $(gnulib)
 424 # Give libc.so an entry point and make it directly runnable itself.
 425 LDFLAGS-c.so += -e __libc_main
 426 # Force the backward compatibility EH functions to be linked.
 427 LDFLAGS-c.so += -u __register_frame
 428 # Pre-link the objects of libc_pic.a so that we can locally resolve
 429 # COMMON symbols before we link against ld.so.  This is because ld.so
 430 # contains some of libc_pic.a already, which will prevent the COMMONs
 431 # from being allocated in libc.so, which introduces evil dependencies
 432 # between libc.so and ld.so, which can make it impossible to upgrade.
 433 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 434         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 435         -Wl,-d -Wl,--whole-archive $^
 436 # Use our own special initializer and finalizer files for libc.so.
 437 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
 438                          $(common-objpfx)libc_pic.os \
 439                          $(elfobjdir)/sofini.os \
 440                          $(elfobjdir)/interp.os $(elfobjdir)/ld.so
 441         $(build-shlib)
 442 ifeq ($(versioning),yes)
 443 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 444 endif
 445 common-generated += libc.so libc_pic.os
 446 ifdef libc.so-version
 447 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 448         $(make-link)
 449 common-generated += libc.so$(libc.so-version)
 450 endif
 451 endif
 452 \f
 453 # Figure out the source filenames in this directory.
 454
 455 override sources        := $(addsuffix .c,$(filter-out $(elided-routines),\
 456                                                        $(routines) $(aux) \
 457                                                        $(sysdep_routines)))
 458 sysdep_routines := $(sysdep_routines)
 459
 460 headers := $(headers) $(sysdep_headers)
 461
 462 # This is the list of all object files, gotten by
 463 # replacing every ".c" in `sources' with a ".o".
 464 override objects        := $(addprefix $(objpfx),$(sources:.c=.o))
 465
 466
 467 # The makefile may define $(extra-libs) with `libfoo libbar'
 468 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 469 ifdef extra-libs
 470 # extra-lib.mk is included once for each extra lib to define rules
 471 # to build it, and to add its objects to the various variables.
 472 # During its evaluation, $(lib) is set to the name of the library.
 473 extra-libs-left := $(extra-libs)
 474 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 475 endif
 476 \f
 477 +depfiles := $(sources:.c=.d) \
 478              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 479              $(addsuffix .d,$(tests) $(test-srcs))
 480 ifeq ($(build-programs),yes)
 481 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 482 endif
 483 +depfiles := $(addprefix $(objpfx),\
 484                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 485                                       $(+depfiles)))
 486
 487 ifdef +depfiles
 488 ifneq ($(no_deps),t)
 489 -include $(+depfiles)
 490 endif
 491 endif
 492 \f\f
 493 # Maximize efficiency by minimizing the number of rules.
 494 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 495 # Don't define any builtin rules.
 496 MAKEFLAGS := $(MAKEFLAGS)r
 497
 498 # Generic rule for making directories.
 499 %/:
 500 # mkdir isn't smart enough to strip a trailing /.
 501         mkdir $(@:%/=%)
 502 \f
 503 # Make sure that object files are not removed
 504 # when they are intermediates between sources and library members.
 505 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 506
 507 # Make sure that the parent library archive is never removed.
 508 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 509 \f
 510 # Use the verbose option of ar and tar when not running silently.
 511 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 512 verbose := v
 513 else                                            # -s
 514 verbose :=
 515 endif                                           # not -s
 516
 517 ARFLAGS := r$(verbose)
 518 CREATE_ARFLAGS := cru$(verbose)
 519 \f
 520 # This makes all the object files in the parent library archive.
 521
 522 .PHONY: lib lib-noranlib
 523 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 524 lib-noranlib: libobjs
 525
 526 # For object-suffix $o, the list of objects with that suffix.
 527 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 528 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 529                                                        $(elide-routines$o)),\
 530                                             $(objects)))
 531 others: $(addprefix $(objpfx),$(install-lib))
 532
 533 ifndef objects
 534
 535 # Create the stamp$o files to keep the parent makefile happy.
 536 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 537 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 538         $(make-target-directory)
 539         rm -f $@; > $@
 540 else
 541
 542 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 543 # timestamp file; these rules (one explicit rule is generated for each
 544 # object suffix) write a list of objects to update in the stamp file.
 545 # The parent will then actually add them all to the archive in the
 546 # archive rule, below.
 547 define o-iterator-doit
 548 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 549 endef
 550 define do-stamp
 551 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 552 mv -f $@T $@
 553 endef
 554 object-suffixes-left := $(object-suffixes-for-libc)
 555 include $(o-iterator)
 556
 557 endif
 558
 559 # Now define explicit rules to build the library archives; these depend
 560 # on the stamp files built above.
 561 define o-iterator-doit
 562 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 563                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 564 endef
 565 define do-makelib
 566 cd $(common-objdir) && \
 567 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 568 $(RANLIB) $@
 569 endef
 570 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 571 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 572 ifndef subdir
 573 $(subdirs-stamps): subdir_lib;
 574 endif
 575 object-suffixes-left = $(object-suffixes-for-libc)
 576 include $(o-iterator)
 577
 578
 579 # This makes all the object files.
 580 .PHONY: objects objs libobjs extra-objs
 581 objects objs: libobjs extra-objs
 582 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 583 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 584
 585 # Canned sequence for building an extra library archive.
 586 define build-extra-lib
 587 $(patsubst %/,cd % &&,$(objpfx)) \
 588 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 589       $(patsubst $(objpfx)%,%,$^)
 590 $(RANLIB) $@
 591 endef
 592 \f
 593 # Installation.
 594
 595 .PHONY: force-install
 596 force-install:
 597
 598 # $(install-lib) are installed from the object directory into $(libdir);
 599 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 600 # unless they also appear in $(non-lib.a).  $(install-data) are installed
 601 # as they are into $(datadir).  $(headers) are installed as they are in
 602 # $(includedir).  $(install-bin) and $(install-sbin) are installed from the
 603 # object directory into $(bindir) and $(sbindir), respectively.
 604 # $(install-others) are absolute path names of files to install; rules to
 605 # install them are defined elsewhere.
 606
 607 # The simple library name to install libc.a under.
 608 # This could be defined by a sysdep Makefile.
 609 ifndef libc-name
 610 libc-name := c
 611 endif
 612
 613 define do-install
 614 $(make-target-directory)
 615 $(INSTALL_DATA) $< $@
 616 endef
 617
 618 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 619 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 620 define make-target-directory
 621 $(addprefix $(..)./scripts/mkinstalldirs ,\
 622             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 623 endef
 624
 625 # Any directory (parent or subdir) should install libc.a; this way
 626 # "make install" in a subdir is guaranteed to install everything it changes.
 627 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 628                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 629                                                      $(libprefix)$(libc-name)))
 630 install: $(installed-libcs)
 631 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 632         $(make-target-directory)
 633         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 634 # Running ranlib after installing makes the __.SYMDEF time stamp up to
 635 # date, which avoids messages from some linkers.
 636         $(RANLIB) $@
 637
 638 define do-install-program
 639 $(make-target-directory)
 640 $(INSTALL_PROGRAM) $< $@.new
 641 mv -f $@.new $@
 642 endef
 643
 644 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
 645 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
 646
 647 ifeq (yes,$(build-shared))
 648 # Find which .so's have versions.
 649 versioned := $(strip $(foreach so,$(install-lib.so),\
 650                                $(patsubst %,$(so),$($(so)-version))))
 651
 652 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
 653 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
 654
 655 install-lib-nosubdir: $(install-lib.so-versioned:%=$(inst_libdir)/%) \
 656                       $(install-lib.so-unversioned:%=$(inst_slibdir)/%)
 657
 658 # Install all the unversioned shared libraries.
 659 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
 660     $(objpfx)%.so $(+force)
 661         $(do-install-program)
 662
 663 ifneq ($(findstring -s,$(LN_S)),)
 664 define make-link
 665 rm -f $@.new
 666 $(SHELL) $(..)scripts/rellns-sh $< $@.new
 667 mv -f $@.new $@
 668 endef
 669 else
 670 # If we have no symbolic links don't bother with rellns-sh.
 671 define make-link
 672 rm -f $@.new
 673 $(LN_S) $< $@.new
 674 mv -f $@.new $@
 675 endef
 676 endif
 677
 678 ifeq (no,$(cross-compiling))
 679 ifeq (yes,$(build-shared))
 680 symbolic-link-prog := $(common-objpfx)elf/sln
 681 symbolic-link-list := $(common-objpfx)elf/symlink.list
 682 define make-shlib-link
 683 echo $(<F) $@ >> $(symbolic-link-list)
 684 endef
 685 endif
 686 endif
 687 ifndef make-shlib-link
 688 define make-shlib-link
 689 rm -f $@
 690 $(LN_S) $(<F) $@
 691 endef
 692 endif
 693
 694 ifdef libc.so-version
 695 # For a library specified to be version N, install three files:
 696 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
 697 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
 698
 699 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
 700                                            $(+force)
 701         $(make-shlib-link)
 702 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
 703         $(do-install-program)
 704 install: $(inst_slibdir)/libc.so$(libc.so-version)
 705
 706 ifndef subdir
 707 # What we install as libc.so for programs to link against is in fact a
 708 # link script.  It contains references for the various libraries we need.
 709 # The libc.so object is not complete since some functions are only defined
 710 # in libc_nonshared.a.
 711 # We need to use absolute paths since otherwise local copies (if they exist)
 712 # of the files are taken by the linker.
 713 install: $(inst_libdir)/libc.so
 714 $(inst_libdir)/libc.so: $(common-objpfx)libc.so$(libc.so-version) \
 715                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
 716                                                   $(libprefix)$(libc-name)) \
 717                         $(+force)
 718         (echo '/* GNU ld script';\
 719          echo '   Use the shared library, but some functions are only in';\
 720          echo '   the static library, so try that secondarily.  */';\
 721          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
 722               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
 723               ')' \
 724         ) > $@.new
 725         mv -f $@.new $@
 726
 727 endif
 728
 729 else
 730 install: $(inst_slibdir)/libc.so
 731 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
 732         $(do-install-program)
 733 endif
 734
 735 ifneq (,$(versioned))
 736 # Produce three sets of rules as above for all the smaller versioned libraries.
 737
 738 define o-iterator-doit
 739 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
 740 endef
 741 object-suffixes-left := $(versioned)
 742 include $(o-iterator)
 743
 744 # Make symlinks in the build directory, because the versioned names might
 745 # be referenced by a DT_NEEDED in another library.
 746 define o-iterator-doit
 747 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
 748 endef
 749 object-suffixes-left := $(versioned)
 750 include $(o-iterator)
 751
 752 generated += $(foreach o,$(versioned),$o$($o-version))
 753
 754 ifeq (,$($(subdir)-version))
 755 define o-iterator-doit
 756 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
 757                                  $(+force);
 758         $$(make-shlib-link)
 759 endef
 760 object-suffixes-left := $(versioned)
 761 include $(o-iterator)
 762
 763 define o-iterator-doit
 764 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
 765         $$(do-install-program)
 766 endef
 767 object-suffixes-left := $(versioned)
 768 include $(o-iterator)
 769 else
 770 define o-iterator-doit
 771 $(inst_slibdir)/$o$($o-version): \
 772   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
 773         $$(make-shlib-link)
 774 endef
 775 object-suffixes-left := $(versioned)
 776 include $(o-iterator)
 777
 778 define o-iterator-doit
 779 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
 780         $$(do-install-program)
 781 endef
 782 object-suffixes-left := $(versioned)
 783 include $(o-iterator)
 784 endif
 785 endif
 786
 787 define do-install-so
 788 $(do-install-program)
 789 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
 790            $(filter-out %.so,$@))
 791 endef
 792
 793 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
 794 $(foreach v,$(so-versions),\
 795           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
 796                                                $(+force)
 797         $(do-install-so)
 798 $(foreach v,$(so-versions),\
 799           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
 800         $(do-install-so)
 801 endif
 802
 803 ifdef install-bin
 804 $(addprefix $(inst_bindir)/,$(install-bin)): \
 805     $(inst_bindir)/%: $(objpfx)% $(+force)
 806         $(do-install-program)
 807 endif
 808 ifdef install-rootsbin
 809 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
 810    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
 811         $(do-install-program)
 812 endif
 813 ifdef install-sbin
 814 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
 815     $(inst_sbindir)/%: $(objpfx)% $(+force)
 816         $(do-install-program)
 817 endif
 818 ifdef install-lib
 819 install-lib.a := $(filter lib%.a,$(install-lib))
 820 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
 821 ifdef install-lib-non.a
 822 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
 823   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
 824         $(do-install)
 825 endif
 826 ifdef install-lib.a
 827 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
 828   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
 829         $(do-install)
 830         $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
 831 endif
 832 endif
 833 ifdef install-data
 834 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
 835         $(do-install)
 836 endif
 837 headers := $(strip $(headers))
 838 ifdef headers
 839 $(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
 840         $(do-install)
 841 endif   # headers
 842
 843 .PHONY: install-bin-nosubdir install-rootsbin-nosubdir install-sbin-nosubdir \
 844         install-lib-nosubdir install-data-nosubdir install-headers-nosubdir
 845 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
 846 install-rootsbin-nosubdir: \
 847         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
 848 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
 849 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
 850                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
 851                        $(addprefix $(libprefix),$(install-lib-non.a)))
 852 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
 853 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
 854 install-others-nosubdir: $(install-others)
 855
 856 # We need all the `-nosubdir' targets so that `install' in the parent
 857 # doesn't depend on several things which each iterate over the subdirs.
 858 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
 859 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
 860 install-%:: install-%-nosubdir ;
 861
 862 .PHONY: install install-no-libc.a-nosubdir
 863 ifeq ($(build-programs),yes)
 864 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
 865                             install-bin-nosubdir install-lib-nosubdir   \
 866                             install-others-nosubdir install-rootsbin-nosubdir \
 867                             install-sbin-nosubdir
 868 else
 869 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
 870                             install-lib-nosubdir install-others-nosubdir
 871 endif
 872 install: install-no-libc.a-nosubdir
 873 \f
 874 # Command to compile $< in $(objdir) using the native libraries.
 875 define native-compile
 876 $(make-target-directory)
 877 $(patsubst %/,cd % &&,$(objpfx)) \
 878 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
 879             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
 880 endef
 881
 882 # Command to compile $< in $(common-objdir) using the native libraries.
 883 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
 884 define common-objdir-compile
 885 $(patsubst %/,cd % &&,$(objpfx)) \
 886 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
 887             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
 888 endef
 889
 890 # We always want to use configuration definitions.
 891 # Note that this is only used for commands running in $(objpfx).
 892 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
 893
 894 # Support the GNU standard name for this target.
 895 .PHONY: check
 896 check: tests
 897 \f
 898 .PHONY: TAGS
 899 TAGS: $(objpfx)distinfo $(..)MakeTAGS
 900         $(MAKE) $(addprefix -f ,$^) $@
 901
 902 $(..)po/%.pot: $(objpfx)distinfo $(..)MakeTAGS FORCE
 903         $(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
 904 FORCE:
 905
 906
 907 .PHONY: echo-headers
 908 echo-headers:
 909         @echo $(headers)
 910
 911 \f
 912 # Common cleaning targets.
 913
 914 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
 915 clean: common-clean
 916 mostlyclean: common-mostlyclean
 917
 918 do-tests-clean:
 919         -rm -f $(patsubst %,$(objpfx)%.out,$(tests) $(test-srcs))
 920
 921 # Remove the object files.
 922 common-mostlyclean:
 923         -rm -f $(addprefix $(objpfx),$(tests) $(test-srcs) $(others) \
 924                                      $(sysdep-others) stubs \
 925                                      $(addsuffix .o,$(tests) $(test-srcs) \
 926                                                     $(others) \
 927                                                     $(sysdep-others)) \
 928                                      $(addsuffix .out,$(tests) $(test-srcs)))
 929         -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
 930                                      $(install-lib.so) \
 931                                      $(install-lib.so:%.so=%_pic.a))
 932         -rm -f core
 933         $(rmobjs)
 934 define rmobjs
 935 $(foreach o,$(object-suffixes-for-libc),
 936 -rm -f $(objpfx)stamp$o $(o-objects))
 937 endef
 938
 939 # Also remove the dependencies and generated source files.
 940 common-clean: common-mostlyclean
 941         -rm -f $(addprefix $(objpfx),$(generated)) $(+depfiles)
 942         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
 943         -rm -f $(addprefix $(common-objpfx),$(common-generated))
 944         -rm -f $(objpfx)distinfo
 945 \f
 946 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
 947 # for each function which is a stub.  We grovel over all the .d files
 948 # looking for references to <stub-tag.h>.  Then we grovel over each
 949 # referenced source file to see what stub function it defines.
 950
 951 ifdef objpfx
 952 .PHONY: stubs # The parent Makefile calls this target.
 953 stubs: $(objpfx)stubs
 954 endif
 955 s = $(sysdep_dir)/generic
 956 $(objpfx)stubs: $(+depfiles)
 957 # Use /dev/null since `...` might expand to empty.
 958         (s=`cd $s && /bin/pwd`; \
 959          $(patsubst %/,cd % &&,$(objpfx)) \
 960          sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
 961           `sed -n -e '\@ $s/[^ ]*\.c@{; s@^.* $s/\([^ ]*\.c\).*$$@'"$$s"'/\1@; h; }' \
 962                 -e '/stub-tag\.h/{; g; p; }' \
 963                   $(patsubst $(objpfx)%,%,$^) /dev/null` \
 964              /dev/null) > $@T
 965         mv -f $@T $@
 966 \f
 967 # Make the distribution tar file.
 968
 969 .PHONY: dist
 970 dist: $(objpfx)distinfo $(..)Make-dist
 971         $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
 972
 973 # Avoid depending on source files found in sysdeps dirs,
 974 # because the references affect implicit rule selection.
 975 dist: $(filter-out %.c %.S %.s,$(distribute))
 976
 977 # We used to simply export all these variables, but that frequently made the
 978 # environment get too large.  Instead, we write all the information into
 979 # a generated makefile fragment `distinfo', and then include it with -f in
 980 # the sub-make that makes the distribution (above).
 981 $(objpfx)distinfo: Makefile $(..)Makerules \
 982                    $(wildcard $(foreach dir,$(sysdirs),$(dir)/Makefile))
 983         $(make-target-directory)
 984         $(distinfo-vars)
 985         mv -f $@.new $@
 986 .PHONY: subdir_distinfo
 987 subdir_distinfo: $(objpfx)distinfo
 988
 989 define distinfo-vars
 990 rm -f $@.new
 991 echo > $@.new 'subdir := $(subdir)'
 992 $(foreach var,subdir-dirs sources elided-routines sysdep_routines \
 993               headers sysdep_headers distribute dont_distribute generated \
 994               others tests test-srcs extra-libs $(extra-libs:%=%-routines) \
 995               versioned \
 996               $(addprefix install-,lib lib.so data bin sbin others),
 997 echo >> $@.new '$(subdir)-$(var) := $($(var))'
 998 echo >> $@.new '$(var) = $$($(subdir)-$(var))')
 999 endef
1000 \f
1001 ifneq (,$(strip $(gpl2lgpl)))
1002 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1003 # Snarf from the master source and frob the copying notice.
1004 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1005         sed -f $^ > $@-tmp
1006 # So I don't edit them by mistake.
1007         chmod a-w $@-tmp
1008         mv -f $@-tmp $@
1009 ifeq ($(with-cvs),yes)
1010         test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@
1011 endif
1012 endif
1013 endif