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: $$dir/%.c \$$(before-compile); \
 270                 \$$(+make-deps)";                                             \
 271          done;                                                                \
 272          echo 'sysd-rules-done = t') > $@T
 273         mv -f $@T $@
 274
 275 ifndef sysd-rules-done
 276 # Don't do deps until this exists, because it provides rules to make the deps.
 277 no_deps=t
 278 endif
 279
 280 # Generate version maps, but wait until sysdep-subdirs is known
 281 ifdef sysd-dirs-done
 282 ifeq ($(versioning),yes)
 283 -include $(common-objpfx)sysd-versions
 284 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 285 common-generated += $(version-maps)
 286 postclean-generated += sysd-versions Versions.all
 287
 288 ifndef avoid-generated
 289 ifneq ($(sysd-versions-subdirs),$(all-subdirs) $(config-sysdirs))
 290 sysd-versions-force = FORCE
 291 FORCE:
 292 endif
 293 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 294                               $(common-objpfx)soversions.i \
 295                               $(..)Versions.def \
 296                               $(wildcard $(add-ons:%=$(..)%/Versions.def))
 297         { while read lib version setname; do \
 298             test -z "$$setname" || echo "$$lib : $$setname"; \
 299           done < $(word 2,$^); \
 300           cat $(filter-out $< $(word 2,$^),$^); \
 301         } | LC_ALL=C $(AWK) -f $< > $@T
 302         mv -f $@T $@
 303 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
 304                                $(..)scripts/versions.awk \
 305                                $(wildcard $(all-subdirs:%=$(..)%/Versions)) \
 306                                $(wildcard $(sysdirs:%=%/Versions)) \
 307                                $(sysd-versions-force)
 308         { echo 'sysd-versions-subdirs = $(all-subdirs) $(config-sysdirs)' ; \
 309           LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 310                  -v move_if_change='$(move-if-change)' \
 311                  -f $(filter-out $< $(sysd-versions-force),$^); \
 312         } > $@T
 313         mv -f $@T $@
 314 endif # avoid-generated
 315 endif # $(versioning) = yes
 316 endif # sysd-dirs-done
 317
 318
 319 ifndef compile-command.S
 320 compile-command.S = $(compile.S) $(OUTPUT_OPTION)
 321 endif
 322 ifndef compile-command.s
 323 compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
 324 endif
 325 ifndef compile-command.c
 326 compile-command.c = $(compile.c) $(OUTPUT_OPTION)
 327 endif
 328
 329 # GCC can grok options after the file name, and it looks nicer that way.
 330 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 331 compile.S = \
 332   $(CC) $< -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 333 COMPILE.S = \
 334   $(CC) -c $(CPPFLAGS) -DASSEMBLER $(asm-CPPFLAGS) $(ASFLAGS-$(suffix $@))
 335 COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
 336
 337 # We need this for the output to go in the right place.  It will default to
 338 # empty if make was configured to work with a cc that can't grok -c and -o
 339 # together.  You can't compile the C library with such a compiler.
 340 OUTPUT_OPTION = -o $@
 341
 342 S-CPPFLAGS = $(asm-CPPFLAGS)
 343 define +make-deps
 344 $(make-target-directory)
 345 -@rm -f $@
 346 $(+mkdep) $< $(CFLAGS) $(CPPFLAGS) $($(<:$*.%=%)-CPPFLAGS) | \
 347 sed \
 348 -e 's,$(subst .,\.,$*)\.o,$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 349 $(sed-remove-objpfx) > $(@:.d=.T)
 350 mv -f $(@:.d=.T) $@
 351 endef
 352 ifneq (,$(objpfx))
 353 # Continuation lines here are dangerous because they introduce spaces!
 354 define sed-remove-objpfx
 355 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 356 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 357 endef
 358 endif
 359 \f
 360 # Shared library building.
 361
 362 ifeq (yes,$(build-shared))
 363
 364 # Reference map file only when versioning is selected and a map file name
 365 # is given.
 366 ifeq ($(versioning),yes)
 367 map-file = $(firstword $($(@F:.so=-map)) \
 368                        $(addprefix $(common-objpfx), \
 369                                    $(filter $(@F:.so=.map),$(version-maps))))
 370 load-map-file = $(map-file:%=-Wl,--version-script=%)
 371 endif
 372
 373 # Pattern rule to build a shared object from an archive of PIC objects.
 374 # This must come after the installation rules so Make doesn't try to
 375 # build shared libraries in place from the installed *_pic.a files.
 376 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 377 # on other shared objects.
 378 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
 379         $(build-shlib)
 380
 381 define build-shlib
 382 $(LINK.o) -shared -Wl,-O1 -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS)  \
 383           -B$(csu-objpfx) $(load-map-file) \
 384           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 385           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 386           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
 387           -Wl,--whole-archive \
 388           $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 389           $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
 390 endef
 391
 392 # This macro is similar to build-shlib but it does not define a soname
 393 # and it does not depend on the destination name to start with `lib'.
 394 define build-module
 395 $(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS)  \
 396           -B$(csu-objpfx) $(load-map-file) \
 397           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 398           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
 399           -Wl,--whole-archive \
 400           $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
 401           $(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
 402 endef
 403
 404 ifndef libc.so-version
 405 # Undefine this because it can't work when we libc.so is unversioned.
 406 static-only-routines =
 407 endif
 408
 409 elide-routines.oS += $(filter-out $(static-only-routines),\
 410                                   $(routines) $(aux) $(sysdep_routines))
 411 elide-routines.os += $(static-only-routines)
 412
 413 # If we have versioned code we don't need the old versions in any of the
 414 # static libraries.
 415 elide-routines.o  += $(shared-only-routines)
 416 elide-routines.op += $(shared-only-routines)
 417 elide-routines.og += $(shared-only-routines)
 418 elide-routines.ob += $(shared-only-routines)
 419
 420 # Don't try to use -lc when making libc.so itself.
 421 # Also omits crti.o and crtn.o, which we do not want
 422 # since we define our own `.init' section specially.
 423 LDFLAGS-c.so = -nostdlib -nostartfiles
 424 # But we still want to link libc.so against $(gnulib).
 425 LDLIBS-c.so += $(gnulib)
 426 # Give libc.so an entry point and make it directly runnable itself.
 427 LDFLAGS-c.so += -e __libc_main
 428 # Force the backward compatibility EH functions to be linked.
 429 LDFLAGS-c.so += -u __register_frame
 430 # Pre-link the objects of libc_pic.a so that we can locally resolve
 431 # COMMON symbols before we link against ld.so.  This is because ld.so
 432 # contains some of libc_pic.a already, which will prevent the COMMONs
 433 # from being allocated in libc.so, which introduces evil dependencies
 434 # between libc.so and ld.so, which can make it impossible to upgrade.
 435 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 436         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 437         -Wl,-d -Wl,--whole-archive $^
 438 # Use our own special initializer and finalizer files for libc.so.
 439 $(common-objpfx)libc.so: $(elfobjdir)/soinit.os \
 440                          $(common-objpfx)libc_pic.os \
 441                          $(elfobjdir)/sofini.os \
 442                          $(elfobjdir)/interp.os $(elfobjdir)/ld.so
 443         $(build-shlib)
 444 ifeq ($(versioning),yes)
 445 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 446 endif
 447 common-generated += libc.so libc_pic.os
 448 ifdef libc.so-version
 449 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 450         $(make-link)
 451 common-generated += libc.so$(libc.so-version)
 452 endif
 453 endif
 454 \f
 455 # Figure out the source filenames in this directory.
 456
 457 override sources        := $(addsuffix .c,$(filter-out $(elided-routines),\
 458                                                        $(routines) $(aux) \
 459                                                        $(sysdep_routines)))
 460 sysdep_routines := $(sysdep_routines)
 461
 462 headers := $(headers) $(sysdep_headers)
 463
 464 # This is the list of all object files, gotten by
 465 # replacing every ".c" in `sources' with a ".o".
 466 override objects        := $(addprefix $(objpfx),$(sources:.c=.o))
 467
 468
 469 # The makefile may define $(extra-libs) with `libfoo libbar'
 470 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 471 ifdef extra-libs
 472 # extra-lib.mk is included once for each extra lib to define rules
 473 # to build it, and to add its objects to the various variables.
 474 # During its evaluation, $(lib) is set to the name of the library.
 475 extra-libs-left := $(extra-libs)
 476 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 477 endif
 478 \f
 479 +depfiles := $(sources:.c=.d) \
 480              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 481              $(addsuffix .d,$(tests) $(test-srcs))
 482 ifeq ($(build-programs),yes)
 483 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 484 endif
 485 +depfiles := $(addprefix $(objpfx),\
 486                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 487                                       $(+depfiles)))
 488
 489 ifdef +depfiles
 490 ifneq ($(no_deps),t)
 491 -include $(+depfiles)
 492 endif
 493 endif
 494 \f\f
 495 # Maximize efficiency by minimizing the number of rules.
 496 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 497 # Don't define any builtin rules.
 498 MAKEFLAGS := $(MAKEFLAGS)r
 499
 500 # Generic rule for making directories.
 501 %/:
 502 # mkdir isn't smart enough to strip a trailing /.
 503         mkdir $(@:%/=%)
 504 \f
 505 # Make sure that object files are not removed
 506 # when they are intermediates between sources and library members.
 507 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 508
 509 # Make sure that the parent library archive is never removed.
 510 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 511 \f
 512 # Use the verbose option of ar and tar when not running silently.
 513 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 514 verbose := v
 515 else                                            # -s
 516 verbose :=
 517 endif                                           # not -s
 518
 519 ARFLAGS := r$(verbose)
 520 CREATE_ARFLAGS := cru$(verbose)
 521 \f
 522 # This makes all the object files in the parent library archive.
 523
 524 .PHONY: lib lib-noranlib
 525 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 526 lib-noranlib: libobjs
 527
 528 # For object-suffix $o, the list of objects with that suffix.
 529 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 530 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 531                                                        $(elide-routines$o)),\
 532                                             $(objects)))
 533 others: $(addprefix $(objpfx),$(install-lib))
 534
 535 ifndef objects
 536
 537 # Create the stamp$o files to keep the parent makefile happy.
 538 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 539 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 540         $(make-target-directory)
 541         rm -f $@; > $@
 542 else
 543
 544 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 545 # timestamp file; these rules (one explicit rule is generated for each
 546 # object suffix) write a list of objects to update in the stamp file.
 547 # The parent will then actually add them all to the archive in the
 548 # archive rule, below.
 549 define o-iterator-doit
 550 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 551 endef
 552 define do-stamp
 553 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 554 mv -f $@T $@
 555 endef
 556 object-suffixes-left := $(object-suffixes-for-libc)
 557 include $(o-iterator)
 558
 559 endif
 560
 561 # Now define explicit rules to build the library archives; these depend
 562 # on the stamp files built above.
 563 define o-iterator-doit
 564 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 565                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 566 endef
 567 define do-makelib
 568 cd $(common-objdir) && \
 569 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 570 $(RANLIB) $@
 571 endef
 572 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 573 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 574 ifndef subdir
 575 $(subdirs-stamps): subdir_lib;
 576 endif
 577 object-suffixes-left = $(object-suffixes-for-libc)
 578 include $(o-iterator)
 579
 580
 581 # This makes all the object files.
 582 .PHONY: objects objs libobjs extra-objs
 583 objects objs: libobjs extra-objs
 584 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 585 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 586
 587 # Canned sequence for building an extra library archive.
 588 define build-extra-lib
 589 $(patsubst %/,cd % &&,$(objpfx)) \
 590 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 591       $(patsubst $(objpfx)%,%,$^)
 592 $(RANLIB) $@
 593 endef
 594 \f
 595 # Installation.
 596
 597 .PHONY: force-install
 598 force-install:
 599
 600 # $(install-lib) are installed from the object directory into $(libdir);
 601 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 602 # unless they also appear in $(non-lib.a).  $(install-data) are installed
 603 # as they are into $(datadir).  $(headers) are installed as they are in
 604 # $(includedir).  $(install-bin) and $(install-sbin) are installed from the
 605 # object directory into $(bindir) and $(sbindir), respectively.
 606 # $(install-others) are absolute path names of files to install; rules to
 607 # install them are defined elsewhere.
 608
 609 # The simple library name to install libc.a under.
 610 # This could be defined by a sysdep Makefile.
 611 ifndef libc-name
 612 libc-name := c
 613 endif
 614
 615 define do-install
 616 $(make-target-directory)
 617 $(INSTALL_DATA) $< $@
 618 endef
 619
 620 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 621 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 622 define make-target-directory
 623 $(addprefix $(..)./scripts/mkinstalldirs ,\
 624             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 625 endef
 626
 627 # Any directory (parent or subdir) should install libc.a; this way
 628 # "make install" in a subdir is guaranteed to install everything it changes.
 629 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 630                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 631                                                      $(libprefix)$(libc-name)))
 632 install: $(installed-libcs)
 633 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 634         $(make-target-directory)
 635         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 636 # Running ranlib after installing makes the __.SYMDEF time stamp up to
 637 # date, which avoids messages from some linkers.
 638         $(RANLIB) $@
 639
 640 define do-install-program
 641 $(make-target-directory)
 642 $(INSTALL_PROGRAM) $< $@.new
 643 mv -f $@.new $@
 644 endef
 645
 646 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
 647 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
 648
 649 ifeq (yes,$(build-shared))
 650 # Find which .so's have versions.
 651 versioned := $(strip $(foreach so,$(install-lib.so),\
 652                                $(patsubst %,$(so),$($(so)-version))))
 653
 654 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
 655 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
 656
 657 install-lib-nosubdir: $(install-lib.so-versioned:%=$(inst_libdir)/%) \
 658                       $(install-lib.so-unversioned:%=$(inst_slibdir)/%)
 659
 660 # Install all the unversioned shared libraries.
 661 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
 662     $(objpfx)%.so $(+force)
 663         $(do-install-program)
 664
 665 ifneq ($(findstring -s,$(LN_S)),)
 666 define make-link
 667 rm -f $@.new
 668 $(SHELL) $(..)scripts/rellns-sh $< $@.new
 669 mv -f $@.new $@
 670 endef
 671 else
 672 # If we have no symbolic links don't bother with rellns-sh.
 673 define make-link
 674 rm -f $@.new
 675 $(LN_S) $< $@.new
 676 mv -f $@.new $@
 677 endef
 678 endif
 679
 680 ifeq (no,$(cross-compiling))
 681 ifeq (yes,$(build-shared))
 682 symbolic-link-prog := $(common-objpfx)elf/sln
 683 symbolic-link-list := $(common-objpfx)elf/symlink.list
 684 define make-shlib-link
 685 echo $(<F) $@ >> $(symbolic-link-list)
 686 endef
 687 endif
 688 endif
 689 ifndef make-shlib-link
 690 define make-shlib-link
 691 rm -f $@
 692 $(LN_S) $(<F) $@
 693 endef
 694 endif
 695
 696 ifdef libc.so-version
 697 # For a library specified to be version N, install three files:
 698 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
 699 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
 700
 701 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
 702                                            $(+force)
 703         $(make-shlib-link)
 704 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
 705         $(do-install-program)
 706 install: $(inst_slibdir)/libc.so$(libc.so-version)
 707
 708 ifndef subdir
 709 # What we install as libc.so for programs to link against is in fact a
 710 # link script.  It contains references for the various libraries we need.
 711 # The libc.so object is not complete since some functions are only defined
 712 # in libc_nonshared.a.
 713 # We need to use absolute paths since otherwise local copies (if they exist)
 714 # of the files are taken by the linker.
 715 install: $(inst_libdir)/libc.so
 716 $(inst_libdir)/libc.so: $(common-objpfx)libc.so$(libc.so-version) \
 717                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
 718                                                   $(libprefix)$(libc-name)) \
 719                         $(+force)
 720         (echo '/* GNU ld script';\
 721          echo '   Use the shared library, but some functions are only in';\
 722          echo '   the static library, so try that secondarily.  */';\
 723          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
 724               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
 725               ')' \
 726         ) > $@.new
 727         mv -f $@.new $@
 728
 729 endif
 730
 731 else
 732 install: $(inst_slibdir)/libc.so
 733 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
 734         $(do-install-program)
 735 endif
 736
 737 ifneq (,$(versioned))
 738 # Produce three sets of rules as above for all the smaller versioned libraries.
 739
 740 define o-iterator-doit
 741 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
 742 endef
 743 object-suffixes-left := $(versioned)
 744 include $(o-iterator)
 745
 746 # Make symlinks in the build directory, because the versioned names might
 747 # be referenced by a DT_NEEDED in another library.
 748 define o-iterator-doit
 749 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
 750 endef
 751 object-suffixes-left := $(versioned)
 752 include $(o-iterator)
 753
 754 generated += $(foreach o,$(versioned),$o$($o-version))
 755
 756 ifeq (,$($(subdir)-version))
 757 define o-iterator-doit
 758 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
 759                                  $(+force);
 760         $$(make-shlib-link)
 761 endef
 762 object-suffixes-left := $(versioned)
 763 include $(o-iterator)
 764
 765 define o-iterator-doit
 766 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
 767         $$(do-install-program)
 768 endef
 769 object-suffixes-left := $(versioned)
 770 include $(o-iterator)
 771 else
 772 define o-iterator-doit
 773 $(inst_slibdir)/$o$($o-version): \
 774   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
 775         $$(make-shlib-link)
 776 endef
 777 object-suffixes-left := $(versioned)
 778 include $(o-iterator)
 779
 780 define o-iterator-doit
 781 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
 782         $$(do-install-program)
 783 endef
 784 object-suffixes-left := $(versioned)
 785 include $(o-iterator)
 786 endif
 787 endif
 788
 789 define do-install-so
 790 $(do-install-program)
 791 $(patsubst %,ln -s -f $(@F) $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
 792            $(filter-out %.so,$@))
 793 endef
 794
 795 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
 796 $(foreach v,$(so-versions),\
 797           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
 798                                                $(+force)
 799         $(do-install-so)
 800 $(foreach v,$(so-versions),\
 801           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
 802         $(do-install-so)
 803 endif
 804
 805 ifdef install-bin
 806 $(addprefix $(inst_bindir)/,$(install-bin)): \
 807     $(inst_bindir)/%: $(objpfx)% $(+force)
 808         $(do-install-program)
 809 endif
 810 ifdef install-rootsbin
 811 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
 812    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
 813         $(do-install-program)
 814 endif
 815 ifdef install-sbin
 816 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
 817     $(inst_sbindir)/%: $(objpfx)% $(+force)
 818         $(do-install-program)
 819 endif
 820 ifdef install-lib
 821 install-lib.a := $(filter lib%.a,$(install-lib))
 822 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
 823 ifdef install-lib-non.a
 824 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
 825   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
 826         $(do-install)
 827 endif
 828 ifdef install-lib.a
 829 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
 830   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
 831         $(do-install)
 832         $(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
 833 endif
 834 endif
 835 ifdef install-data
 836 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
 837         $(do-install)
 838 endif
 839 headers := $(strip $(headers))
 840 ifdef headers
 841 $(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
 842         $(do-install)
 843 endif   # headers
 844
 845 .PHONY: install-bin-nosubdir install-rootsbin-nosubdir install-sbin-nosubdir \
 846         install-lib-nosubdir install-data-nosubdir install-headers-nosubdir
 847 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
 848 install-rootsbin-nosubdir: \
 849         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
 850 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
 851 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
 852                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
 853                        $(addprefix $(libprefix),$(install-lib-non.a)))
 854 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
 855 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
 856 install-others-nosubdir: $(install-others)
 857
 858 # We need all the `-nosubdir' targets so that `install' in the parent
 859 # doesn't depend on several things which each iterate over the subdirs.
 860 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
 861 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
 862 install-%:: install-%-nosubdir ;
 863
 864 .PHONY: install install-no-libc.a-nosubdir
 865 ifeq ($(build-programs),yes)
 866 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
 867                             install-bin-nosubdir install-lib-nosubdir   \
 868                             install-others-nosubdir install-rootsbin-nosubdir \
 869                             install-sbin-nosubdir
 870 else
 871 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\
 872                             install-lib-nosubdir install-others-nosubdir
 873 endif
 874 install: install-no-libc.a-nosubdir
 875 \f
 876 # Command to compile $< in $(objdir) using the native libraries.
 877 define native-compile
 878 $(make-target-directory)
 879 $(patsubst %/,cd % &&,$(objpfx)) \
 880 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
 881             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(@F)
 882 endef
 883
 884 # Command to compile $< in $(common-objdir) using the native libraries.
 885 # We must cd to $(objdir) anyway so that $(..)config.h is valid.
 886 define common-objdir-compile
 887 $(patsubst %/,cd % &&,$(objpfx)) \
 888 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
 889             $(firstword $(filter /%,$< $(shell pwd)/$<)) -o $(..)$(@F)
 890 endef
 891
 892 # We always want to use configuration definitions.
 893 # Note that this is only used for commands running in $(objpfx).
 894 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) -include $(..)config.h
 895
 896 # Support the GNU standard name for this target.
 897 .PHONY: check
 898 check: tests
 899 \f
 900 .PHONY: TAGS
 901 TAGS: $(objpfx)distinfo $(..)MakeTAGS
 902         $(MAKE) $(addprefix -f ,$^) $@
 903
 904 $(..)po/%.pot: $(objpfx)distinfo $(..)MakeTAGS FORCE
 905         $(MAKE) $(addprefix -f ,$(filter-out FORCE,$^)) $@
 906 FORCE:
 907
 908
 909 .PHONY: echo-headers
 910 echo-headers:
 911         @echo $(headers)
 912
 913 \f
 914 # Common cleaning targets.
 915
 916 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
 917 clean: common-clean
 918 mostlyclean: common-mostlyclean
 919
 920 do-tests-clean:
 921         -rm -f $(patsubst %,$(objpfx)%.out,$(tests) $(test-srcs))
 922
 923 # Remove the object files.
 924 common-mostlyclean:
 925         -rm -f $(addprefix $(objpfx),$(tests) $(test-srcs) $(others) \
 926                                      $(sysdep-others) stubs \
 927                                      $(addsuffix .o,$(tests) $(test-srcs) \
 928                                                     $(others) \
 929                                                     $(sysdep-others)) \
 930                                      $(addsuffix .out,$(tests) $(test-srcs)))
 931         -rm -f $(addprefix $(objpfx),$(extra-objs) $(install-lib) \
 932                                      $(install-lib.so) \
 933                                      $(install-lib.so:%.so=%_pic.a))
 934         -rm -f core
 935         $(rmobjs)
 936 define rmobjs
 937 $(foreach o,$(object-suffixes-for-libc),
 938 -rm -f $(objpfx)stamp$o $(o-objects))
 939 endef
 940
 941 # Also remove the dependencies and generated source files.
 942 common-clean: common-mostlyclean
 943         -rm -f $(addprefix $(objpfx),$(generated)) $(+depfiles)
 944         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
 945         -rm -f $(addprefix $(common-objpfx),$(common-generated))
 946         -rm -f $(objpfx)distinfo
 947 \f
 948 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
 949 # for each function which is a stub.  We grovel over all the .d files
 950 # looking for references to <stub-tag.h>.  Then we grovel over each
 951 # referenced source file to see what stub function it defines.
 952
 953 ifdef objpfx
 954 .PHONY: stubs # The parent Makefile calls this target.
 955 stubs: $(objpfx)stubs
 956 endif
 957 s = $(sysdep_dir)/generic
 958 $(objpfx)stubs: $(+depfiles)
 959 # Use /dev/null since `...` might expand to empty.
 960         (s=`cd $s && /bin/pwd`; \
 961          $(patsubst %/,cd % &&,$(objpfx)) \
 962          sed -n 's/^stub_warning *(\([^)]*\).*$$/#define __stub_\1/p' \
 963           `sed -n -e '\@ $s/[^ ]*\.c@{; s@^.* $s/\([^ ]*\.c\).*$$@'"$$s"'/\1@; h; }' \
 964                 -e '/stub-tag\.h/{; g; p; }' \
 965                   $(patsubst $(objpfx)%,%,$^) /dev/null` \
 966              /dev/null) > $@T
 967         mv -f $@T $@
 968 \f
 969 # Make the distribution tar file.
 970
 971 .PHONY: dist
 972 dist: $(objpfx)distinfo $(..)Make-dist
 973         $(MAKE) -f $< -f $(word 2,$^) $(Make-dist-args)
 974
 975 # Avoid depending on source files found in sysdeps dirs,
 976 # because the references affect implicit rule selection.
 977 dist: $(filter-out %.c %.S %.s,$(distribute))
 978
 979 # We used to simply export all these variables, but that frequently made the
 980 # environment get too large.  Instead, we write all the information into
 981 # a generated makefile fragment `distinfo', and then include it with -f in
 982 # the sub-make that makes the distribution (above).
 983 $(objpfx)distinfo: Makefile $(..)Makerules \
 984                    $(wildcard $(foreach dir,$(sysdirs),$(dir)/Makefile))
 985         $(make-target-directory)
 986         $(distinfo-vars)
 987         mv -f $@.new $@
 988 .PHONY: subdir_distinfo
 989 subdir_distinfo: $(objpfx)distinfo
 990
 991 define distinfo-vars
 992 rm -f $@.new
 993 echo > $@.new 'subdir := $(subdir)'
 994 $(foreach var,subdir-dirs sources elided-routines sysdep_routines \
 995               headers sysdep_headers distribute dont_distribute generated \
 996               others tests test-srcs extra-libs $(extra-libs:%=%-routines) \
 997               versioned \
 998               $(addprefix install-,lib lib.so data bin sbin others),
 999 echo >> $@.new '$(subdir)-$(var) := $($(var))'
1000 echo >> $@.new '$(var) = $$($(subdir)-$(var))')
1001 endef
1002 \f
1003 ifneq (,$(strip $(gpl2lgpl)))
1004 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1005 # Snarf from the master source and frob the copying notice.
1006 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1007         sed -f $^ > $@-tmp
1008 # So I don't edit them by mistake.
1009         chmod a-w $@-tmp
1010         mv -f $@-tmp $@
1011 ifeq ($(with-cvs),yes)
1012         test ! -d CVS || cvs $(CVSOPTS) commit -m'Updated from $^' $@
1013 endif
1014 endif
1015 endif