Makerules

   1 # Copyright (C) 1991-2015 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 #
  19 #       Common rules for making the GNU C library.  This file is included
  20 #       by the top-level Makefile and by all subdirectory makefiles
  21 #       (through Rules).
  22 #
  23 ifneq (,)
  24 This makefile requires GNU Make.
  25 endif
  26
  27 REQUIRED_MAKE_VERSION = 3.74
  28 REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION))
  29
  30 ifneq ($(REQUIRED_MAKE_VERSION), \
  31        $(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
  32 Wrong GNU Make version.  See above for the version needed.
  33 endif
  34
  35
  36 ifdef   subdir
  37 ..      := ../
  38 endif   # subdir
  39
  40 # If `sources' was defined by the parent makefile, undefine it so
  41 # we will later get it from wildcard search in this directory.
  42 ifneq   "$(findstring env,$(origin sources))" ""
  43 sources :=
  44 endif
  45
  46 oPATH := $(PATH)
  47 PATH := this definition should take precedence over $(oPATH)
  48 ifeq ($(PATH),$(oPATH))
  49 You must not use the -e flag when building the GNU C library.
  50 else
  51 PATH := $(oPATH)
  52 endif
  53 \f
  54 ifndef +included-Makeconfig
  55 include $(..)Makeconfig
  56 endif
  57
  58 # This variable is used in ``include $(o-iterator)'' after defining
  59 # $(o-iterator-doit) to produce some desired rule using $o for the object
  60 # suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
  61 # is produced for each object suffix in use.
  62 o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))
  63 \f
  64 # Include any system-specific makefiles.
  65
  66 # This is here so things in sysdep Makefiles can easily depend on foo.h as
  67 # appropriate and not worry about where foo.h comes from, which may be
  68 # system dependent and not known by that Makefile.
  69 vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
  70                                       $(+sysdep_dirs) $(..)))
  71
  72 # The same is true for RPC source files.
  73 vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
  74                                       $(+sysdep_dirs) $(..)))
  75
  76 # Some sysdep makefiles use this to distinguish being included here from
  77 # being included individually by a subdir makefile (hurd/Makefile needs this).
  78 in-Makerules := yes
  79
  80 sysdep-makefiles := $(wildcard $(sysdirs:=/Makefile))
  81 ifneq (,$(sysdep-makefiles))
  82 include $(sysdep-makefiles)
  83 endif
  84
  85
  86 # Reorder before-compile so that mach things come first, and hurd things
  87 # second, before all else.  The mach and hurd subdirectories have many
  88 # generated header files which the much of rest of the library depends on,
  89 # so it is best to build them first (and mach before hurd, at that).
  90 before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
  91                            $(before-compile)) \
  92                   $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
  93                                $(before-compile))
  94
  95 # Even before that, we need abi-versions.h which is generated right here.
  96 ifeq ($(build-shared),yes)
  97 ifndef avoid-generated
  98 before-compile := $(common-objpfx)abi-versions.h $(before-compile)
  99 $(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
 100                                 $(common-objpfx)Versions.all
 101         LC_ALL=C $(AWK) -f $^ > $@T
 102         mv -f $@T $@
 103
 104 $(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
 105         sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
 106             $(common-objpfx)abi-versions.h > $@T
 107         mv -f $@T $@
 108 endif # avoid-generated
 109 endif # $(build-shared) = yes
 110
 111 ifndef avoid-generated
 112 before-compile := $(common-objpfx)libc-abis.h $(before-compile)
 113 $(common-objpfx)libc-abis.h: $(common-objpfx)libc-abis.stamp; @:
 114 $(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \
 115                              $(firstword $(wildcard $(sysdirs:=/libc-abis)) \
 116                                          $(..)libc-abis) \
 117                              $(..)Makerules
 118         $(SHELL) $< \
 119                  $(base-machine)-$(config-vendor)-$(config-os) \
 120                  < $(word 2,$^) > $(@:.stamp=.h)T
 121         $(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h)
 122         touch $@
 123 common-generated += $(common-objpfx)libc-abis.h
 124 endif # avoid-generated
 125
 126 ifeq (yes,$(build-shared))
 127 $(common-objpfx)runtime-linker.h: $(common-objpfx)runtime-linker.stamp; @:
 128 $(common-objpfx)runtime-linker.stamp: $(common-objpfx)config.make
 129         $(make-target-directory)
 130         echo '#define RUNTIME_LINKER "$(rtlddir)/$(rtld-installed-name)"' \
 131                 > ${@:stamp=T}
 132         $(move-if-change) ${@:stamp=T} ${@:stamp=h}
 133         touch $@
 134 endif
 135
 136 # Make sure the subdirectory for object files gets created.
 137 ifdef objpfx
 138 ifeq (,$(wildcard $(objpfx).))
 139 before-compile += $(objpfx).
 140 $(objpfx).:
 141         $(make-target-directory)
 142 endif
 143 endif
 144
 145 # Remove existing files from `before-compile'.  Things are added there when
 146 # they must exist for dependency generation to work right, but once they
 147 # exist there is no further need for every single file to depend on them,
 148 # and those gratuitous dependencies result in many gratuitous
 149 # recompilations.
 150 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 151
 152 # Don't let any before-compile file be an intermediate and get removed.
 153 ifdef before-compile
 154 $(before-compile):
 155 endif
 156
 157 # We don't want $(common-objpfx) files to depend on miscellaneous stuff
 158 # in subdirs.
 159 ifdef subdir
 160 common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
 161 else
 162 common-before-compile = $(before-compile)
 163 endif
 164
 165 ifndef subdir
 166 # If a makefile needs to do something conditional on something that
 167 # can only be figured out from headers, write a FOO.make.c input
 168 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
 169 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
 170 #
 171 # We only generate these in the top-level makefile, to avoid any weirdness
 172 # from subdir-specific makefile tweaks creeping in on an update.
 173 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
 174         rm -f $@T $@.dT
 175         (echo '# Generated from $*.make.c by Makerules.'; \
 176          $(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
 177                -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
 178          | sed -n '/@@@/{s/@@@[  ]*\(.*\)@@@/\1/;s/[     ]*$$//p;}'; \
 179          echo 'common-generated += $(@F)'; \
 180          sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
 181          rm -f $@.dT) > $@T
 182         mv -f $@T $@
 183 endif
 184
 185 ifdef subdir
 186 sed-remove-dotdot := -e 's@  *\.\.\/\([^        \]*\)@ $$(..)\1@g' \
 187                      -e 's@^\.\.\/\([^  \]*\)@$$(..)\1@g'
 188 else
 189 sed-remove-dotdot := -e 's@  *\([^      \/$$][^         \]*\)@ $$(..)\1@g' \
 190                      -e 's@^\([^        \/$$][^         \]*\)@$$(..)\1@g'
 191 endif
 192
 193
 194 ifdef gen-as-const-headers
 195 # Generating headers for assembly constants.
 196 # We need this defined early to get into before-compile before
 197 # it's used in sysd-rules, below.
 198 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
 199                                            %.sym $(common-before-compile)
 200         $(AWK) -f $< $(filter %.sym,$^) \
 201         | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) -x c - \
 202                 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
 203         sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
 204                 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
 205         rm -f $(@:.h.d=.h)T3
 206         sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
 207             $(@:.h=.h.d)T > $(@:.h=.h.d)T2
 208         rm -f $(@:.h=.h.d)T
 209         mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
 210         mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
 211 vpath %.sym $(sysdirs)
 212 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 213
 214 tests += $(gen-as-const-headers:%.sym=test-as-const-%)
 215 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
 216 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
 217                             %.sym $(common-objpfx)%.h
 218         ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
 219          $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
 220          echo '#include "$(..)test-skeleton.c"') > $@T
 221         mv -f $@T $@
 222 endif
 223 \f
 224 ifeq (yes,$(build-shared))
 225 # Generate the header containing the names of all shared libraries.
 226 # We use a stamp file to avoid unnecessary recompilations.
 227 before-compile += $(common-objpfx)gnu/lib-names.h
 228 ifeq ($(soversions.mk-done),t)
 229 ifndef abi-variants
 230 lib-names-h-abi = gnu/lib-names.h
 231 lib-names-stmp-abi = gnu/lib-names.stmp
 232 else
 233 lib-names-h-abi = gnu/lib-names-$(default-abi).h
 234 lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp
 235 before-compile += $(common-objpfx)$(lib-names-h-abi)
 236 common-generated += gnu/lib-names.h
 237 install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi)
 238 $(common-objpfx)gnu/lib-names.h:
 239         $(make-target-directory)
 240         { \
 241          echo '/* This file is automatically generated.';\
 242          echo '   It defines macros to allow user program to find the shared'; \
 243          echo '   library files which come as part of GNU libc.  */'; \
 244          echo '#ifndef __GNU_LIB_NAMES_H'; \
 245          echo '#define __GNU_LIB_NAMES_H        1'; \
 246          echo ''; \
 247          $(if $(abi-includes), \
 248           $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 249           echo '';) \
 250          $(foreach v,$(abi-variants),\
 251          $(if $(abi-$(v)-condition),\
 252          echo '#if $(abi-$(v)-condition)'; \
 253          echo '# include <gnu/lib-names-$(v).h>'); \
 254          $(if $(abi-$(v)-condition),echo '#endif';)) \
 255          echo ''; \
 256          echo '#endif   /* gnu/lib-names.h */'; \
 257         } >  $@
 258 endif
 259 $(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @:
 260 $(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \
 261                                        $(common-objpfx)soversions.i
 262         $(make-target-directory)
 263         { \
 264          $(if $(abi-variants), \
 265          echo '/* This file is automatically generated.  */';\
 266          echo '#ifndef __GNU_LIB_NAMES_H'; \
 267          echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \
 268          echo '#endif';, \
 269          echo '/* This file is automatically generated.';\
 270          echo '   It defines macros to allow user program to find the shared'; \
 271          echo '   library files which come as part of GNU libc.  */'; \
 272          echo '#ifndef __GNU_LIB_NAMES_H'; \
 273          echo '#define __GNU_LIB_NAMES_H        1';) \
 274          echo ''; \
 275          ($(foreach s,$(all-sonames), echo $(s);)) \
 276          | LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \
 277          $(if $(abi-variants),, \
 278          echo ''; \
 279          echo '#endif   /* gnu/lib-names.h */';) \
 280         } >  ${@:stmp=T}
 281         $(move-if-change) ${@:stmp=T} ${@:stmp=h}
 282         touch $@
 283 endif
 284 common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi)
 285 endif
 286 \f
 287 ###############################################################################
 288 # NOTE!  Everything adding to before-compile needs to come before this point! #
 289 ###############################################################################
 290
 291 # Generate an ordered list of implicit rules which find the source files in
 292 # each sysdep directory.  The old method was to use vpath to search all the
 293 # sysdep directories.  However, that had the problem that a .S file in a
 294 # later directory would be chosen over a .c file in an earlier directory,
 295 # which does not preserve the desired sysdeps ordering behavior.
 296
 297 # System-dependent makefiles can put in `inhibit-sysdep-asm' regexps
 298 # matching sysdep directories whose assembly source files should be
 299 # suppressed.
 300
 301 -include $(common-objpfx)sysd-rules
 302 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 303 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 304 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 305 sysd-rules-force = FORCE
 306 FORCE:
 307 endif
 308 $(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
 309                             $(common-objpfx)config.make $(..)Makerules \
 310                             $(sysdep-makefiles) $(sysdep-makeconfigs) \
 311                             $(sysd-rules-force)
 312         -@rm -f $@T
 313         LC_ALL=C $(AWK) -f $< > $@T \
 314                         -v all_object_suffixes='$(all-object-suffixes)' \
 315                         -v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
 316                         -v sysd_rules_patterns='$(sysd-rules-patterns)' \
 317                         -v config_sysdirs='$(config-sysdirs)'
 318         mv -f $@T $@
 319
 320 ifndef sysd-rules-done
 321 # Don't do deps until this exists, because it provides rules to make the deps.
 322 no_deps=t
 323 endif
 324
 325 define o-iterator-doit
 326 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 327 endef
 328 object-suffixes-left := $(all-object-suffixes)
 329 include $(o-iterator)
 330
 331 define o-iterator-doit
 332 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 333 endef
 334 object-suffixes-left := $(all-object-suffixes)
 335 include $(o-iterator)
 336
 337 define o-iterator-doit
 338 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
 339 endef
 340 object-suffixes-left := $(all-object-suffixes)
 341 include $(o-iterator)
 342
 343 # Omit the objpfx rules when building in the source tree, because
 344 # objpfx is empty and so these rules just override the ones above.
 345 ifdef objpfx
 346 # Define first rules to find the source files in $(objpfx).
 347 # Generated source files will end up there.
 348 define o-iterator-doit
 349 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 350 endef
 351 object-suffixes-left := $(all-object-suffixes)
 352 include $(o-iterator)
 353
 354 define o-iterator-doit
 355 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 356 endef
 357 object-suffixes-left := $(all-object-suffixes)
 358 include $(o-iterator)
 359 endif
 360
 361 # Generate version maps, but wait until sysdep-subdirs is known
 362 ifeq ($(sysd-sorted-done),t)
 363 ifeq ($(build-shared),yes)
 364 -include $(common-objpfx)sysd-versions
 365 $(addprefix $(common-objpfx),$(version-maps)): $(common-objpfx)sysd-versions
 366 common-generated += $(version-maps)
 367 postclean-generated += sysd-versions Versions.all abi-versions.h \
 368                        Versions.def Versions.v.i Versions.v
 369
 370 ifndef avoid-generated
 371 ifneq ($(sysd-versions-subdirs),$(sorted-subdirs) $(config-sysdirs))
 372 sysd-versions-force = FORCE
 373 FORCE:
 374 endif
 375
 376 $(common-objpfx)Versions.def: $(..)scripts/versionlist.awk \
 377                               $(common-objpfx)Versions.v
 378         LC_ALL=C $(AWK) -f $^ > $@T
 379         mv -f $@T $@
 380
 381 $(common-objpfx)Versions.all: $(..)scripts/firstversions.awk \
 382                               $(common-objpfx)soversions.i \
 383                               $(common-objpfx)Versions.def
 384         { while read which lib version setname; do \
 385             test x"$$which" = xDEFAULT || continue; \
 386             test -z "$$setname" || echo "$$lib : $$setname"; \
 387           done < $(word 2,$^); \
 388           cat $(word 3,$^); \
 389         } | LC_ALL=C $(AWK) -f $< > $@T
 390         mv -f $@T $@
 391 # See %.v/%.v.i implicit rules in Makeconfig.
 392 $(common-objpfx)Versions.v.i: $(wildcard $(subdirs:%=$(..)%/Versions)) \
 393                               $(wildcard $(sysdirs:%=%/Versions)) \
 394                               $(sysd-versions-force)
 395 $(common-objpfx)sysd-versions: $(common-objpfx)Versions.all \
 396                                $(common-objpfx)Versions.v \
 397                                $(..)scripts/versions.awk
 398         ( echo 'sysd-versions-subdirs = $(subdirs) $(config-sysdirs)' ; \
 399           cat $(word 2,$^) \
 400           | LC_ALL=C $(AWK) -v buildroot=$(common-objpfx) -v defsfile=$< \
 401                             -v move_if_change='$(move-if-change)' \
 402                             -f $(word 3,$^); \
 403         ) > $@T
 404         mv -f $@T $@
 405 endif # avoid-generated
 406 endif # $(build-shared) = yes
 407 endif # sysd-sorted-done
 408
 409 # Generate .dT files as we compile.
 410 compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
 411 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 412 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 413 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 414
 415 # Like compile-mkdep-flags, but for use with $(BUILD_CC).  We don't want to
 416 # track system includes here, they may spuriously trigger an install rule,
 417 # and would cause the check-local-headers test to fail.
 418 native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@
 419
 420 # GCC can grok options after the file name, and it looks nicer that way.
 421 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 422 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
 423 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
 424                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 425 COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
 426 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
 427                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 428
 429 # We need this for the output to go in the right place.  It will default to
 430 # empty if make was configured to work with a cc that can't grok -c and -o
 431 # together.  You can't compile the C library with such a compiler.
 432 OUTPUT_OPTION = -o $@
 433
 434 # This is the end of the pipeline for compiling generated C code.
 435 compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)
 436
 437 # We need the $(CFLAGS) to be in there to have the right predefines during
 438 # the dependency run for C sources.  But having it for assembly sources can
 439 # get the wrong predefines.
 440 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
 441
 442 define +make-deps
 443 $(make-target-directory)
 444 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
 445              $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
 446 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 447 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
 448 mv -f $(@:.d=.T) $@ $(generate-md5)
 449 endef
 450
 451 ifneq (,$(objpfx))
 452 # Continuation lines here are dangerous because they introduce spaces!
 453 define sed-remove-objpfx
 454 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 455 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 456 endef
 457 endif
 458 \f
 459 # Modify the list of routines we build for different targets
 460
 461 ifeq (yes,$(build-shared))
 462 ifndef libc.so-version
 463 # Undefine this because it can't work when we libc.so is unversioned.
 464 static-only-routines =
 465 endif
 466 endif
 467
 468 elide-routines.oS += $(filter-out $(static-only-routines),\
 469                                   $(routines) $(aux) $(sysdep_routines))
 470 elide-routines.os += $(static-only-routines)
 471
 472 # If we have versioned code we don't need the old versions in any of the
 473 # static libraries.
 474 elide-routines.o  += $(shared-only-routines)
 475 elide-routines.op += $(shared-only-routines)
 476 elide-routines.og += $(shared-only-routines)
 477 \f
 478 # Shared library building.
 479
 480 ifeq (yes,$(build-shared))
 481
 482 # Reference map file only when shared libraries are built and a map file name
 483 # is given.
 484 ifeq ($(build-shared),yes)
 485 map-file = $(firstword $($(@F:.so=-map)) \
 486                        $(addprefix $(common-objpfx), \
 487                                    $(filter $(@F:.so=.map),$(version-maps))))
 488 load-map-file = $(map-file:%=-Wl,--version-script=%)
 489 endif
 490
 491 # Compiler arguments to use to link a shared object with libc and
 492 # ld.so.  This is intended to be as similar as possible to a default
 493 # link with an installed libc.
 494 link-libc-args = -Wl,--start-group \
 495                  $(libc-for-link) \
 496                  $(common-objpfx)libc_nonshared.a \
 497                  $(as-needed) $(elf-objpfx)ld.so $(no-as-needed) \
 498                  -Wl,--end-group
 499
 500 # The corresponding shared libc to use.  This may be modified for a
 501 # particular target.
 502 libc-for-link = $(common-objpfx)libc.so
 503
 504 # The corresponding dependencies.  As these are used in dependencies,
 505 # not just commands, they cannot use target-specific variables so need
 506 # to name both possible libc.so objects.
 507 link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
 508                  $(common-objpfx)libc_nonshared.a $(elf-objpfx)ld.so
 509
 510 # Pattern rule to build a shared object from an archive of PIC objects.
 511 # This must come after the installation rules so Make doesn't try to
 512 # build shared libraries in place from the installed *_pic.a files.
 513 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 514 # on other shared objects.  The linking with libc and ld.so is intended
 515 # to be as similar as possible to a default link with an installed libc.
 516 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(link-libc-deps)
 517         $(build-shlib) $(link-libc-args)
 518         $(call after-link,$@)
 519
 520 define build-shlib-helper
 521 $(LINK.o) -shared $(static-libgcc) -Wl,-O1 $(sysdep-LDFLAGS) \
 522           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(rtld-LDFLAGS) \
 523           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 524           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 525           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 526           $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 527           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 528 endef
 529
 530 ifeq (yes,$(use-default-link))
 531 # If the linker is good enough, we can let it use its default linker script.
 532 shlib-lds =
 533 shlib-lds-flags =
 534 else
 535 # binutils only position loadable notes into the first page for binaries,
 536 # not for shared objects
 537 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
 538         $(LINK.o) -shared -Wl,-O1 \
 539                   -nostdlib -nostartfiles \
 540                   $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
 541                   -Wl,--verbose 2>&1 | \
 542           sed > $@T \
 543               -e '/^=========/,/^=========/!d;/^=========/d' \
 544               $(if $(filter yes,$(have-hash-style)), \
 545                    -e 's/^.*\.gnu\.hash[        ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 546                    -e '/^[      ]*\.hash[       ]*:.*$$/{h;d;}' \
 547                    -e '/DATA_SEGMENT_ALIGN/{H;g}' \
 548                 , \
 549                    -e 's/^.*\.hash[     ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 550                ) \
 551               -e 's/^.*\*(\.dynbss).*$$/& \
 552                  PROVIDE(__start___libc_freeres_ptrs = .); \
 553                  *(__libc_freeres_ptrs) \
 554                  PROVIDE(__stop___libc_freeres_ptrs = .);/'\
 555               -e 's@^.*\*(\.jcr).*$$@& \
 556                  PROVIDE(__start___libc_subfreeres = .);\
 557                  __libc_subfreeres : { *(__libc_subfreeres) }\
 558                  PROVIDE(__stop___libc_subfreeres = .);\
 559                  PROVIDE(__start___libc_atexit = .);\
 560                  __libc_atexit : { *(__libc_atexit) }\
 561                  PROVIDE(__stop___libc_atexit = .);\
 562                  PROVIDE(__start___libc_thread_subfreeres = .);\
 563                  __libc_thread_subfreeres : { *(__libc_thread_subfreeres) }\
 564                  PROVIDE(__stop___libc_thread_subfreeres = .);\
 565                  /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
 566         test -s $@T
 567         mv -f $@T $@
 568 common-generated += shlib.lds
 569
 570 shlib-lds = $(common-objpfx)shlib.lds
 571 shlib-lds-flags = -T $(shlib-lds)
 572 endif
 573
 574 define build-shlib
 575 $(build-shlib-helper) -o $@ $(shlib-lds-flags) \
 576           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 577 endef
 578
 579 define build-module-helper
 580 $(LINK.o) -shared $(static-libgcc) $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
 581           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
 582           -B$(csu-objpfx) $(load-map-file) \
 583           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 584           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 585 endef
 586
 587 # This macro is similar to build-shlib but it does not define a soname
 588 # and it does not depend on the destination name to start with `lib'.
 589 # binutils only position loadable notes into the first page for binaries,
 590 # not for shared objects
 591 define build-module
 592 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 593           $(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
 594 $(call after-link,$@)
 595 endef
 596 define build-module-asneeded
 597 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 598           $(csu-objpfx)abi-note.o \
 599           -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
 600           $(link-libc-args)
 601 $(call after-link,$@)
 602 endef
 603
 604 build-module-helper-objlist = \
 605         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 606                    $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
 607                                 $(link-libc-deps),$^))
 608
 609 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 610 build-shlib-objlist = $(build-module-helper-objlist) \
 611                       $(LDLIBS-$(@F:lib%.so=%).so)
 612
 613 # Don't try to use -lc when making libc.so itself.
 614 # Also omits crti.o and crtn.o, which we do not want
 615 # since we define our own `.init' section specially.
 616 LDFLAGS-c.so = -nostdlib -nostartfiles
 617 # But we still want to link libc.so against $(libc.so-gnulib).
 618 LDLIBS-c.so += $(libc.so-gnulib)
 619 # Give libc.so an entry point and make it directly runnable itself.
 620 LDFLAGS-c.so += -e __libc_main
 621 # If lazy relocation is disabled add the -z now flag.
 622 ifeq ($(bind-now),yes)
 623 LDFLAGS-c.so += -Wl,-z,now
 624 endif
 625 # Pre-link the objects of libc_pic.a so that we can locally resolve
 626 # COMMON symbols before we link against ld.so.  This is because ld.so
 627 # contains some of libc_pic.a already, which will prevent the COMMONs
 628 # from being allocated in libc.so, which introduces evil dependencies
 629 # between libc.so and ld.so, which can make it impossible to upgrade.
 630 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 631         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 632         $(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
 633
 634 ifeq (,$(strip $(shlib-lds-flags)))
 635 # Generate a list of -R options to excise .gnu.glibc-stub.* sections.
 636 $(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
 637         $(OBJDUMP) -h $< | \
 638         $(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
 639                 > $@T
 640         mv -f $@T $@
 641 # Apply those -R options.
 642 $(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
 643                                    $(common-objpfx)libc_pic.os
 644         $(OBJCOPY) @$^ $@
 645 generated += libc_pic.opts libc_pic.os.clean
 646
 647 libc_pic_clean := .clean
 648 endif
 649
 650 # Build a possibly-modified version of libc_pic.a for use in building
 651 # linkobj/libc.so.
 652 ifeq (,$(filter sunrpc,$(subdirs)))
 653 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a
 654         $(make-target-directory)
 655         ln -f $< $@
 656 else
 657 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a \
 658                                     $(common-objpfx)sunrpc/librpc_compat_pic.a
 659         $(make-target-directory)
 660         (cd $(common-objpfx)linkobj; \
 661          $(AR) x ../libc_pic.a; \
 662          rm $$($(AR) t ../sunrpc/librpc_compat_pic.a | sed 's/^compat-//'); \
 663          $(AR) x ../sunrpc/librpc_compat_pic.a; \
 664          $(AR) cr libc_pic.a *.os; \
 665          rm *.os)
 666 endif # $(subdirs) contains sunrpc
 667
 668 # Clear link-libc-deps for the libc.so libraries so build-shlibs does not
 669 # filter ld.so out of the list of linked objects.
 670 $(common-objpfx)libc.so: link-libc-deps = # empty
 671 $(common-objpfx)linkobj/libc.so: link-libc-deps = # empty
 672
 673 # Use our own special initializer and finalizer files for the libc.so
 674 # libraries.
 675 $(common-objpfx)libc.so: $(elf-objpfx)soinit.os \
 676                          $(common-objpfx)libc_pic.os$(libc_pic_clean) \
 677                          $(elf-objpfx)sofini.os \
 678                          $(elf-objpfx)interp.os \
 679                          $(elf-objpfx)ld.so \
 680                          $(shlib-lds)
 681         $(build-shlib)
 682         $(call after-link,$@)
 683
 684 $(common-objpfx)linkobj/libc.so: $(elf-objpfx)soinit.os \
 685                          $(common-objpfx)linkobj/libc_pic.a \
 686                          $(elf-objpfx)sofini.os \
 687                          $(elf-objpfx)interp.os \
 688                          $(elf-objpfx)ld.so \
 689                          $(shlib-lds)
 690         $(build-shlib)
 691         $(call after-link,$@)
 692
 693 ifeq ($(build-shared),yes)
 694 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 695 endif
 696 common-generated += libc.so libc_pic.os
 697 ifdef libc.so-version
 698 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 699         $(make-link)
 700 common-generated += libc.so$(libc.so-version)
 701 endif
 702 endif
 703 \f
 704 # Figure out the source filenames in this directory.
 705
 706 override sources := $(addsuffix .c,\
 707                         $(filter-out $(elided-routines),\
 708                             $(routines) $(aux) \
 709                             $(sysdep_routines)))
 710 sysdep_routines := $(sysdep_routines)
 711
 712 headers := $(headers) $(sysdep_headers)
 713
 714 # This is the list of all object files, gotten by
 715 # replacing every ".c" in `sources' with a ".o".
 716 override objects := $(addprefix $(objpfx),$(sources:.c=.o))
 717
 718
 719 # The makefile may define $(extra-libs) with `libfoo libbar'
 720 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 721 ifdef extra-libs
 722 # extra-lib.mk is included once for each extra lib to define rules
 723 # to build it, and to add its objects to the various variables.
 724 # During its evaluation, $(lib) is set to the name of the library.
 725 extra-libs-left := $(extra-libs)
 726 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 727 endif
 728
 729
 730 # The makefile may define $(modules-names) to build additional modules.
 731 # These are built with $(build-module), except any in $(modules-names-nobuild).
 732 ifdef modules-names
 733 # extra-lib.mk is included once for each extra lib to define rules
 734 # to build it, and to add its objects to the various variables.
 735 # During its evaluation, $(lib) is set to the name of the library.
 736 extra-modules-left := $(modules-names)
 737 include $(patsubst %,$(..)extra-modules.mk,$(modules-names))
 738
 739 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
 740 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
 741                 $(objpfx)%.os $(shlib-lds) $(link-libs-deps)
 742         $(build-module)
 743 endif
 744 \f
 745 +depfiles := $(sources:.c=.d) \
 746              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 747              $(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
 748              $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
 749              $(addsuffix .d,$(tests) $(xtests) $(test-srcs))
 750 ifeq ($(build-programs),yes)
 751 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 752 endif
 753 +depfiles := $(addprefix $(objpfx),\
 754                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 755                                       $(+depfiles)))
 756 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
 757 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
 758              $(wildcard $(all-dt-files:.dt=.d))
 759
 760 # This is a funny rule in that it removes its input file.
 761 %.d: %.dt
 762         @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
 763          mv -f $(@:.d=.T) $@ && \
 764          rm -f $<
 765
 766 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
 767 # They will be generated when they're needed, and trying too early won't work.
 768 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 769 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
 770                                                 $(+gen-as-const)))
 771
 772 ifdef +depfiles
 773 ifneq ($(no_deps),t)
 774 -include $(+depfiles)
 775 endif
 776 endif
 777 \f\f
 778 # Maximize efficiency by minimizing the number of rules.
 779 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 780 # Don't define any builtin rules.
 781 MAKEFLAGS := $(MAKEFLAGS)r
 782
 783 # Generic rule for making directories.
 784 %/:
 785 # mkdir isn't smart enough to strip a trailing /.
 786 # We always require a mkdir which supports the -p option to avoid error
 787 # messages in case of races.
 788         mkdir -p $(@:%/=%)
 789 \f
 790 # Make sure that object files are not removed
 791 # when they are intermediates between sources and library members.
 792 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 793
 794 # Make sure that the parent library archive is never removed.
 795 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 796 \f
 797 # Use the verbose option of ar and tar when not running silently.
 798 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 799 verbose := v
 800 else                                            # -s
 801 verbose :=
 802 endif                                           # not -s
 803
 804 ARFLAGS := r$(verbose)
 805 CREATE_ARFLAGS := cru$(verbose)
 806 \f
 807 # This makes all the object files in the parent library archive.
 808
 809 .PHONY: lib lib-noranlib
 810 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 811 lib-noranlib: libobjs
 812
 813 # For object-suffix $o, the list of objects with that suffix.
 814 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 815 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 816                                                        $(elide-routines$o)),\
 817                                             $(objects))) \
 818             $(addprefix $(objpfx),$(o-objects$o))
 819
 820 others: $(addprefix $(objpfx),$(install-lib))
 821
 822 ifndef objects
 823
 824 # Create the stamp$o files to keep the parent makefile happy.
 825 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 826 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 827         $(make-target-directory)
 828         rm -f $@; > $@
 829 else
 830
 831 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 832 # timestamp file; these rules (one explicit rule is generated for each
 833 # object suffix) write a list of objects to update in the stamp file.
 834 # The parent will then actually add them all to the archive in the
 835 # archive rule, below.
 836 define o-iterator-doit
 837 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 838 endef
 839 define do-stamp
 840 $(make-target-directory)
 841 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 842 mv -f $@T $@
 843 endef
 844 object-suffixes-left := $(object-suffixes-for-libc)
 845 include $(o-iterator)
 846
 847 endif
 848
 849 # Now define explicit rules to build the library archives; these depend
 850 # on the stamp files built above.
 851 define o-iterator-doit
 852 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 853                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 854 endef
 855 define do-makelib
 856 cd $(common-objdir) && \
 857 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 858 endef
 859 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 860 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 861 ifndef subdir
 862 $(subdirs-stamps): subdir_lib;
 863 endif
 864 object-suffixes-left = $(object-suffixes-for-libc)
 865 include $(o-iterator)
 866
 867
 868 # This makes all the object files.
 869 .PHONY: objects objs libobjs extra-objs
 870 objects objs: libobjs extra-objs
 871 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 872 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 873
 874 # Canned sequence for building an extra library archive.
 875 define build-extra-lib
 876 $(patsubst %/,cd % &&,$(objpfx)) \
 877 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 878       $(patsubst $(objpfx)%,%,$^)
 879 endef
 880 \f
 881 # Installation.
 882
 883 .PHONY: force-install
 884 force-install:
 885
 886 # $(install-lib) are installed from the object directory into $(libdir);
 887 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 888 # unless they also appear in $(non-lib.a).  $(install-data) are installed as
 889 # they are into $(datadir).  $(headers) are installed as they are in
 890 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 891 # are installed from the object directory into $(bindir), $(bindir) and
 892 # $(sbindir), respectively.  $(install-others) and $(install-others-programs)
 893 # are absolute path names of files to install; rules to install them are
 894 # defined elsewhere.
 895
 896 # The simple library name to install libc.a under.
 897 # This could be defined by a sysdep Makefile.
 898 ifndef libc-name
 899 libc-name := c
 900 endif
 901
 902 define do-install
 903 $(make-target-directory)
 904 $(INSTALL_DATA) $< $@
 905 endef
 906
 907 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 908 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 909 define make-target-directory
 910 $(addprefix $(..)./scripts/mkinstalldirs ,\
 911             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 912 endef
 913
 914 # Any directory (parent or subdir) should install libc.a; this way
 915 # "make install" in a subdir is guaranteed to install everything it changes.
 916 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 917                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 918                                                      $(libprefix)$(libc-name)))
 919
 920 .PHONY: check-install-supported
 921 check-install-supported:
 922
 923 # Check to see if the prefix or exec_prefix GNU standard variable
 924 # has been overridden on the command line and, if so, fail with
 925 # an error message since doing so is not supported (set DESTDIR
 926 # instead).
 927 ifeq ($(origin prefix),command line)
 928 check-install-supported:
 929         $(error Overriding prefix is not supported. Set DESTDIR instead.)
 930 endif
 931
 932 ifeq ($(origin exec_prefix),command line)
 933 check-install-supported:
 934         $(error Overriding exec_prefix is not supported. Set DESTDIR instead.)
 935 endif
 936
 937 install: check-install-supported
 938
 939 install: $(installed-libcs)
 940 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 941         $(make-target-directory)
 942         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 943
 944 define do-install-program
 945 $(make-target-directory)
 946 $(INSTALL_PROGRAM) $< $@.new
 947 mv -f $@.new $@
 948 endef
 949
 950 define do-install-script
 951 $(make-target-directory)
 952 $(INSTALL_SCRIPT) $< $@.new
 953 mv -f $@.new $@
 954 endef
 955
 956 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
 957 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
 958
 959 ifeq (yes,$(build-shared))
 960 # Find which .so's have versions.
 961 versioned := $(strip $(foreach so,$(install-lib.so),\
 962                                $(patsubst %,$(so),$($(so)-version))))
 963
 964 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
 965 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
 966
 967 # For versioned libraries, we install three files:
 968 #       $(inst_libdir)/libfoo.so        -- for linking, symlink or ld script
 969 #       $(inst_slibdir)/libfoo.so.NN    -- for loading by SONAME, symlink
 970 #       $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
 971 lib-version := $(firstword $($(subdir)-version) $(version))
 972 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
 973                       $(foreach L,$(install-lib.so-versioned),\
 974                                 $(inst_libdir)/$L \
 975                                 $(inst_slibdir)/$(L:.so=)-$(lib-version).so \
 976                                 $(inst_slibdir)/$L$($L-version))
 977
 978 # Install all the unversioned shared libraries.
 979 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
 980     $(objpfx)%.so $(+force)
 981         $(do-install-program)
 982
 983 ifneq ($(findstring -s,$(LN_S)),)
 984 define make-link
 985 rm -f $@.new
 986 $(SHELL) $(..)scripts/rellns-sh $< $@.new
 987 mv -f $@.new $@
 988 endef
 989 else
 990 # If we have no symbolic links don't bother with rellns-sh.
 991 define make-link
 992 rm -f $@.new
 993 $(LN_S) $< $@.new
 994 mv -f $@.new $@
 995 endef
 996 endif
 997
 998 ifeq (yes,$(build-shared))
 999 ifeq (no,$(cross-compiling))
1000 symbolic-link-prog := $(elf-objpfx)sln
1001 symbolic-link-list := $(elf-objpfx)symlink.list
1002 define make-shlib-link
1003 echo `$(..)scripts/rellns-sh -p $< $@` $@ >> $(symbolic-link-list)
1004 endef
1005 else # cross-compiling
1006 # We need a definition that can be used by elf/Makefile's install rules.
1007 symbolic-link-prog = $(LN_S)
1008 endif
1009 endif
1010 ifndef make-shlib-link
1011 define make-shlib-link
1012 rm -f $@
1013 $(LN_S) `$(..)scripts/rellns-sh -p $< $@` $@
1014 endef
1015 endif
1016
1017 ifdef libc.so-version
1018 # For a library specified to be version N, install three files:
1019 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
1020 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
1021
1022 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
1023                                            $(+force)
1024         $(make-shlib-link)
1025 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
1026         $(do-install-program)
1027 install: $(inst_slibdir)/libc.so$(libc.so-version)
1028
1029 # This fragment of linker script gives the OUTPUT_FORMAT statement
1030 # for the configuration we are building.  We put this statement into
1031 # the linker scripts we install for -lc et al so that they will not be
1032 # used by a link for a different format on a multi-architecture system.
1033 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
1034                             $(common-objpfx)config.make \
1035                             $(common-objpfx)config.h $(..)Makerules
1036 ifneq (unknown,$(output-format))
1037         echo > $@.new 'OUTPUT_FORMAT($(output-format))'
1038 else
1039         $(LINK.o) -shared $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
1040                   -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
1041         | sed -n -f $< > $@.new
1042         test -s $@.new
1043         rm -f $@.so
1044 endif
1045         mv -f $@.new $@
1046 common-generated += format.lds
1047
1048 ifndef subdir
1049 # What we install as libc.so for programs to link against is in fact a
1050 # link script.  It contains references for the various libraries we need.
1051 # The libc.so object is not complete since some functions are only defined
1052 # in libc_nonshared.a.
1053 # We need to use absolute paths since otherwise local copies (if they exist)
1054 # of the files are taken by the linker.
1055 install: $(inst_libdir)/libc.so
1056 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
1057                         $(common-objpfx)libc.so$(libc.so-version) \
1058                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
1059                                                   $(libprefix)$(libc-name)) \
1060                         $(+force)
1061         (echo '/* GNU ld script';\
1062          echo '   Use the shared library, but some functions are only in';\
1063          echo '   the static library, so try that secondarily.  */';\
1064          cat $<; \
1065          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
1066               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1067               ' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
1068         ) > $@.new
1069         mv -f $@.new $@
1070
1071 endif
1072
1073 else
1074 install: $(inst_slibdir)/libc.so
1075 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1076         $(do-install-program)
1077 endif
1078
1079 ifneq (,$(versioned))
1080 # Produce three sets of rules as above for all the smaller versioned libraries.
1081
1082 define o-iterator-doit
1083 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1084 endef
1085 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1086 ifneq (,$(object-suffixes-left))
1087 include $(o-iterator)
1088 endif
1089
1090 # Make symlinks in the build directory, because the versioned names might
1091 # be referenced by a DT_NEEDED in another library.
1092 define o-iterator-doit
1093 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1094 endef
1095 object-suffixes-left := $(versioned)
1096 include $(o-iterator)
1097
1098 generated += $(foreach o,$(versioned),$o$($o-version))
1099
1100 ifeq (,$($(subdir)-version))
1101 define o-iterator-doit
1102 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1103                                  $(+force);
1104         $$(make-shlib-link)
1105 endef
1106 object-suffixes-left := $(versioned)
1107 include $(o-iterator)
1108
1109 define o-iterator-doit
1110 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1111         $$(do-install-program)
1112 endef
1113 object-suffixes-left := $(versioned)
1114 include $(o-iterator)
1115 else
1116 define o-iterator-doit
1117 $(inst_slibdir)/$o$($o-version): \
1118   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1119         $$(make-shlib-link)
1120 endef
1121 object-suffixes-left := $(versioned)
1122 include $(o-iterator)
1123
1124 define o-iterator-doit
1125 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1126         $$(do-install-program)
1127 endef
1128 object-suffixes-left := $(versioned)
1129 include $(o-iterator)
1130 endif
1131 endif
1132
1133 define do-install-so
1134 $(do-install-program)
1135 $(patsubst %,$(LN_S) -f $(@F) \
1136                         $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1137            $(filter-out %.so,$@))
1138 endef
1139
1140 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1141 $(foreach v,$(so-versions),\
1142           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1143                                                $(+force)
1144         $(do-install-so)
1145 $(foreach v,$(so-versions),\
1146           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1147         $(do-install-so)
1148 endif
1149
1150 ifdef install-bin
1151 $(addprefix $(inst_bindir)/,$(install-bin)): \
1152     $(inst_bindir)/%: $(objpfx)% $(+force)
1153         $(do-install-program)
1154 endif
1155 ifdef install-bin-script
1156 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1157     $(inst_bindir)/%: $(objpfx)% $(+force)
1158         $(do-install-script)
1159 endif
1160 ifdef install-rootsbin
1161 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1162    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1163         $(do-install-program)
1164 endif
1165 ifdef install-sbin
1166 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1167     $(inst_sbindir)/%: $(objpfx)% $(+force)
1168         $(do-install-program)
1169 endif
1170 ifdef install-lib
1171 install-lib.a := $(filter lib%.a,$(install-lib))
1172 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1173 ifdef install-lib-non.a
1174 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1175   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1176         $(do-install)
1177 endif
1178 ifdef install-lib.a
1179 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1180   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1181         $(do-install)
1182 endif
1183 endif
1184 ifdef install-data
1185 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1186         $(do-install)
1187 endif
1188 headers := $(strip $(headers))
1189 ifdef headers
1190 # This implicit rule installs headers from the source directory.
1191 # It may be ignored in preference to rules from sysd-rules to find
1192 # headers in the sysdeps tree.
1193 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1194         $(do-install)
1195 $(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
1196         $(do-install)
1197 $(inst_includedir)/%.h: %.h $(+force)
1198         $(do-install)
1199 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1200         $(do-install)
1201 headers-nonh := $(filter-out %.h,$(headers))
1202 ifdef headers-nonh
1203 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1204                                                  % $(+force)
1205         $(do-install)
1206 endif   # headers-nonh
1207 endif   # headers
1208
1209 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1210         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1211         install-data-nosubdir install-headers-nosubdir
1212 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1213 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1214 install-rootsbin-nosubdir: \
1215         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1216 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1217 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1218                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1219                        $(addprefix $(libprefix),$(install-lib-non.a)))
1220 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1221 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1222 install-others-nosubdir: $(install-others)
1223 install-others-programs-nosubdir: $(install-others-programs)
1224
1225 # We need all the `-nosubdir' targets so that `install' in the parent
1226 # doesn't depend on several things which each iterate over the subdirs.
1227 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1228 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1229 install-%:: install-%-nosubdir ;
1230
1231 .PHONY: install install-no-libc.a-nosubdir
1232 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1233                             install-lib-nosubdir install-others-nosubdir
1234 ifeq ($(build-programs),yes)
1235 install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1236                             install-rootsbin-nosubdir install-sbin-nosubdir \
1237                             install-others-programs-nosubdir
1238 endif
1239 install: install-no-libc.a-nosubdir
1240 \f
1241 # Command to compile $< using the native libraries.
1242 define native-compile
1243 $(make-target-directory)
1244 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1245             $< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
1246 endef
1247
1248 # We always want to use configuration definitions.
1249 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
1250                    -DIS_IN_build -include $(common-objpfx)config.h
1251
1252 # Support the GNU standard name for this target.
1253 .PHONY: check
1254 check: tests
1255 # Special target to run tests which cannot be run unconditionally.
1256 # Maintainers should use this target.
1257 .PHONY: xcheck
1258 xcheck: xtests
1259
1260 all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
1261 ifneq (,$(all-nonlib))
1262 cpp-srcs-left = $(all-nonlib)
1263 lib := nonlib
1264 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
1265 endif
1266
1267
1268 ifeq ($(build-shared),yes)
1269 # Generate normalized lists of symbols, versions, and data sizes.
1270 # This is handy for checking against existing library binaries.
1271
1272 %.symlist: $(..)scripts/abilist.awk %.dynsym
1273         LC_ALL=C $(AWK) -f $^ > $@T
1274         mv -f $@T $@
1275
1276 %.dynsym: %.so
1277         LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
1278         mv -f $@T $@
1279
1280 # A sysdeps/.../Makefile can set abilist-pattern to something like
1281 # %-foo.abilist to look for libc-foo.abilist instead of libc.abilist.
1282 # This makes sense if multiple ABIs can be most cleanly supported by a
1283 # configuration without using separate sysdeps directories for each.
1284 ifdef abilist-pattern
1285 vpath $(abilist-pattern) $(+sysdep_dirs)
1286 endif
1287
1288 vpath %.abilist $(+sysdep_dirs)
1289
1290 # The .PRECIOUS rule prevents the files built by an implicit rule whose
1291 # target pattern is %.symlist from being considered "intermediate files"
1292 # and automatically removed.  We only want these files to be removed by
1293 # 'make clean', which is handled by the 'generated' variable.
1294 .PRECIOUS: %.symlist
1295 generated += $(extra-libs:=.symlist)
1296
1297 ifdef abilist-pattern
1298 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1299                           $(objpfx)%.symlist
1300         $(check-abi-pattern); \
1301         $(evaluate-test)
1302 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1303                           $(common-objpfx)%.symlist
1304         $(check-abi-pattern); \
1305         $(evaluate-test)
1306 endif
1307 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1308                           $(objpfx)%.symlist
1309         $(check-abi); \
1310         $(evaluate-test)
1311 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1312                           $(common-objpfx)%.symlist
1313         $(check-abi); \
1314         $(evaluate-test)
1315 define check-abi-pattern
1316         diff -p -U 0 $(filter $(abilist-pattern),$^) $(filter %.symlist,$^) \
1317              > $@
1318 endef
1319 define check-abi
1320         diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^) > $@
1321 endef
1322
1323 ifdef abilist-pattern
1324 update-abi-%: $(objpfx)%.symlist $(abilist-pattern)
1325         $(update-abi-pattern)
1326 update-abi-%: $(common-objpfx)%.symlist $(abilist-pattern)
1327         $(update-abi-pattern)
1328 endif
1329 update-abi-%: $(objpfx)%.symlist %.abilist
1330         $(update-abi)
1331 update-abi-%: $(common-objpfx)%.symlist %.abilist
1332         $(update-abi)
1333 define update-abi-pattern
1334 @if cmp -s $^ 2> /dev/null; \
1335  then \
1336       echo '+++ $(filter $(abilist-pattern),$^) is unchanged'; \
1337  else cp -f $^; \
1338       echo '*** Now check $(filter $(abilist-pattern),$^) changes for correctness ***'; \
1339  fi
1340 endef
1341 define update-abi
1342 @if cmp -s $^ 2> /dev/null; \
1343  then \
1344       echo '+++ $(filter %.abilist,$^) is unchanged'; \
1345  else cp -f $^; \
1346       echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
1347  fi
1348 endef
1349
1350 .PHONY: update-abi check-abi
1351 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1352 check-abi-list = $(patsubst %.so,$(objpfx)check-abi-%.out, \
1353                                  $(install-lib.so-versioned))
1354 check-abi: $(check-abi-list)
1355 ifdef subdir
1356 subdir_check-abi: check-abi
1357 subdir_update-abi: update-abi
1358 else
1359 check-abi: subdir_check-abi
1360         if grep -q '^FAIL:' $(objpfx)*/check-abi*.test-result; then \
1361                 cat $(objpfx)*/check-abi*.out && exit 1; fi
1362 update-abi: subdir_update-abi
1363 endif
1364
1365 ifeq ($(subdir),elf)
1366 check-abi: $(objpfx)check-abi-libc.out
1367 tests-special += $(objpfx)check-abi-libc.out
1368 update-abi: update-abi-libc
1369 common-generated += libc.symlist
1370 endif
1371
1372 ifeq ($(build-shared),yes)
1373 ifdef subdir
1374 tests-special += $(check-abi-list)
1375 endif
1376 endif
1377
1378 endif
1379 \f
1380 # These will have been set by sysdeps/posix/Makefile.
1381 L_tmpnam  ?= 1
1382 TMP_MAX   ?= 0
1383 L_ctermid ?= 1
1384 L_cuserid ?= 1
1385
1386 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1387
1388 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1389 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1390                    $(common-objpfx)config.make
1391         $(make-target-directory)
1392         { echo '#include "$(..)posix/bits/posix1_lim.h"';               \
1393           echo '#define _LIBC 1';                                       \
1394           echo '#include "$(..)misc/sys/uio.h"'; } |                    \
1395         $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)'   \
1396               $(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
1397         sed $(sed-remove-objpfx) $(sed-remove-dotdot)                   \
1398             $(@:st=dT) > $(@:st=dt)
1399         mv -f $(@:st=dt) $(@:st=d)
1400         fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`;       \
1401         filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`;    \
1402         iov_max=`sed -n 's/^#define UIO_MAXIOV //p' $(@:st=hT)`;        \
1403         fopen_max=$${fopen_max:-16};                                    \
1404         filename_max=$${filename_max:-1024};                            \
1405         if [ -z "$$iov_max" ]; then                                     \
1406           define_iov_max="# undef IOV_MAX";                             \
1407         else                                                            \
1408           define_iov_max="# define IOV_MAX $$iov_max";                  \
1409         fi;                                                             \
1410         sed -e "s/@FOPEN_MAX@/$$fopen_max/"                             \
1411             -e "s/@FILENAME_MAX@/$$filename_max/"                       \
1412             -e "s/@L_tmpnam@/$(L_tmpnam)/"                              \
1413             -e "s/@TMP_MAX@/$(TMP_MAX)/"                                \
1414             -e "s/@L_ctermid@/$(L_ctermid)/"                            \
1415             -e "s/@L_cuserid@/$(L_cuserid)/"                            \
1416             -e "s/@define_IOV_MAX@/$$define_iov_max/"                   \
1417             $< > $(@:st=h.new)
1418         $(move-if-change) $(@:st=h.new) $(@:st=h)
1419 # Remove these last so that they can be examined if something went wrong.
1420         rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1421         touch $@
1422 # Get dependencies.
1423 ifndef no_deps
1424 -include $(stdio_lim:h=d)
1425 endif
1426 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1427 \f
1428 FORCE:
1429
1430 .PHONY: echo-headers
1431 echo-headers:
1432         @echo $(headers)
1433
1434 %.bz2: %; bzip2 -9vk $<
1435 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1436 %.xz: %; xz -9evk $<
1437 \f
1438 # Common cleaning targets.
1439
1440 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1441 clean: common-clean
1442 mostlyclean: common-mostlyclean
1443
1444 do-tests-clean:
1445         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) $(xtests) \
1446                                                       $(test-srcs)) \
1447                                      $(addsuffix .test-result,$(tests) \
1448                                                               $(xtests) \
1449                                                               $(test-srcs)))
1450
1451 # Remove the object files.
1452 common-mostlyclean:
1453         -rm -f $(addprefix $(objpfx),$(tests) $(xtests) $(test-srcs) \
1454                                      $(others) $(sysdep-others) stubs \
1455                                      $(addsuffix .o,$(tests) $(xtests) \
1456                                                     $(test-srcs) $(others) \
1457                                                     $(sysdep-others)) \
1458                                      $(addsuffix .out,$(tests) $(xtests) \
1459                                                       $(test-srcs)) \
1460                                      $(addsuffix .test-result,$(tests) \
1461                                                               $(xtests) \
1462                                                               $(test-srcs)))
1463         -rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
1464                                      $(install-lib) $(install-lib.so) \
1465                                      $(install-lib.so:%.so=%_pic.a))
1466         -rm -f core
1467         -rm -f $(objpfx)rtld-*.os
1468         $(rmobjs)
1469 define rmobjs
1470 $(foreach o,$(object-suffixes-for-libc),
1471 -rm -f $(objpfx)stamp$o $(o-objects))
1472 endef
1473
1474 # Also remove the dependencies and generated source files.
1475 common-clean: common-mostlyclean
1476         -rm -f $(addprefix $(objpfx),$(generated))
1477         -rm -f $(objpfx)*.d $(objpfx)*.dt
1478         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1479         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1480         -rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
1481 \f
1482 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1483 # for each function which is a stub.
1484
1485 ifdef objpfx
1486 .PHONY: stubs # The parent Makefile calls this target.
1487 stubs: $(objpfx)stubs
1488 endif
1489 objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1490                   $(addprefix $(objpfx),$(extra-objs))
1491 $(objpfx)stubs: $(objs-for-stubs)
1492 ifneq (,$(strip $(objs-for-stubs)))
1493         (cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1494         $(AWK) '/\.gnu\.glibc-stub\./ { \
1495                   sub(/\.gnu\.glibc-stub\./, "", $$2); \
1496                   stubs[$$2] = 1; } \
1497                 END { for (s in stubs) print "#define __stub_" s }' > $@T
1498         mv -f $@T $@
1499 else
1500         > $@
1501 endif
1502 \f
1503 ifneq (,$(strip $(gpl2lgpl)))
1504 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1505 # Snarf from the master source and frob the copying notice.
1506 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1507         sed -f $^ > $@-tmp
1508 # So I don't edit them by mistake.
1509         chmod a-w $@-tmp
1510         mv -f $@-tmp $@
1511 endif
1512 endif
1513
1514 # Local Variables:
1515 # mode: makefile
1516 # End: