Makerules

   1 # Copyright (C) 1991-2018 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
 109 # first-versions.h and ldbl-compat-choose.h provide macros used in
 110 # various symbol versioning macro calls.
 111 before-compile := $(common-objpfx)first-versions.h \
 112                   $(common-objpfx)ldbl-compat-choose.h $(before-compile)
 113 $(common-objpfx)first-versions.h: $(common-objpfx)versions.stmp
 114 $(common-objpfx)ldbl-compat-choose.h: $(common-objpfx)versions.stmp
 115 endif # avoid-generated
 116 endif # $(build-shared) = yes
 117
 118 ifndef avoid-generated
 119 ifneq (,$(CXX))
 120 # If C++ headers <cstdlib> or <cmath> are used, GCC 6 will include
 121 # /usr/include/stdlib.h or /usr/include/math.h from "#include_next"
 122 # (instead of stdlib/stdlib.h or math/math.h in the glibc source
 123 # directory), and this turns up as a make dependency.  An implicit
 124 # rule will kick in and make will try to install stdlib/stdlib.h or
 125 # math/math.h as /usr/include/stdlib.h or /usr/include/math.h because
 126 # the target is out of date.  We make a copy of <cstdlib> and <cmath>
 127 # in the glibc build directory so that stdlib/stdlib.h and math/math.h
 128 # will be used instead of /usr/include/stdlib.h and /usr/include/math.h.
 129 before-compile := $(common-objpfx)cstdlib $(common-objpfx)cmath \
 130                   $(before-compile)
 131 $(common-objpfx)cstdlib: $(c++-cstdlib-header)
 132         $(INSTALL_DATA) $< $@T
 133         $(move-if-change) $@T $@
 134 $(common-objpfx)cmath: $(c++-cmath-header)
 135         $(INSTALL_DATA) $< $@T
 136         $(move-if-change) $@T $@
 137 ifneq (,$(c++-bits-std_abs-h))
 138 # Also make a copy of <bits/std_abs.h> from GCC 7 to prevent it from
 139 # including /usr/include/stdlib.h.
 140 before-compile := $(common-objpfx)bits/std_abs.h $(before-compile)
 141 $(common-objpfx)bits/std_abs.h: $(c++-bits-std_abs-h)
 142         $(INSTALL_DATA) $< $@T
 143         $(move-if-change) $@T $@
 144 endif
 145 endif
 146
 147 before-compile := $(common-objpfx)libc-abis.h $(before-compile)
 148 $(common-objpfx)libc-abis.h: $(common-objpfx)libc-abis.stamp; @:
 149 $(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \
 150                              $(firstword $(wildcard $(sysdirs:=/libc-abis)) \
 151                                          $(..)libc-abis) \
 152                              $(..)Makerules
 153         $(SHELL) $< \
 154                  $(base-machine)-$(config-vendor)-$(config-os) \
 155                  < $(word 2,$^) > $(@:.stamp=.h)T
 156         $(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h)
 157         touch $@
 158 common-generated += $(common-objpfx)libc-abis.h
 159 endif # avoid-generated
 160
 161 ifeq (yes,$(build-shared))
 162 $(common-objpfx)runtime-linker.h: $(common-objpfx)runtime-linker.stamp; @:
 163 $(common-objpfx)runtime-linker.stamp: $(common-objpfx)config.make
 164         $(make-target-directory)
 165         echo '#define RUNTIME_LINKER "$(rtlddir)/$(rtld-installed-name)"' \
 166                 > ${@:stamp=T}
 167         $(move-if-change) ${@:stamp=T} ${@:stamp=h}
 168         touch $@
 169 endif
 170
 171 # Make sure the subdirectory for object files gets created.
 172 ifdef objpfx
 173 ifeq (,$(wildcard $(objpfx).))
 174 before-compile += $(objpfx).
 175 $(objpfx).:
 176         $(make-target-directory)
 177 endif
 178 endif
 179
 180 # Remove existing files from `before-compile'.  Things are added there when
 181 # they must exist for dependency generation to work right, but once they
 182 # exist there is no further need for every single file to depend on them,
 183 # and those gratuitous dependencies result in many gratuitous
 184 # recompilations.
 185 before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))
 186
 187 # Don't let any before-compile file be an intermediate and get removed.
 188 ifdef before-compile
 189 $(before-compile):
 190 endif
 191
 192 # We don't want $(common-objpfx) files to depend on miscellaneous stuff
 193 # in subdirs.
 194 ifdef subdir
 195 common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
 196 else
 197 common-before-compile = $(before-compile)
 198 endif
 199
 200 ifndef subdir
 201 # If a makefile needs to do something conditional on something that
 202 # can only be figured out from headers, write a FOO.make.c input
 203 # file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
 204 # to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
 205 #
 206 # We only generate these in the top-level makefile, to avoid any weirdness
 207 # from subdir-specific makefile tweaks creeping in on an update.
 208 $(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
 209         rm -f $@T $@.dT
 210         (echo '# Generated from $*.make.c by Makerules.'; \
 211          $(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
 212                -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
 213          | sed -n '/@@@/{s/@@@[  ]*\(.*\)@@@/\1/;s/[     ]*$$//p;}'; \
 214          echo 'common-generated += $(@F)'; \
 215          sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
 216          rm -f $@.dT) > $@T
 217         mv -f $@T $@
 218 endif
 219
 220 ifdef subdir
 221 sed-remove-dotdot := -e 's@  *\.\.\/\([^        \]*\)@ $$(..)\1@g' \
 222                      -e 's@^\.\.\/\([^  \]*\)@$$(..)\1@g'
 223 else
 224 sed-remove-dotdot := -e 's@  *\([^      \/$$][^         \]*\)@ $$(..)\1@g' \
 225                      -e 's@^\([^        \/$$][^         \]*\)@$$(..)\1@g'
 226 endif
 227
 228 ifdef gen-py-const-headers
 229 # We'll use a static pattern rule to match .pysym files with their
 230 # corresponding generated .py files.
 231 # The generated .py files go in the submodule's dir in the glibc build dir.
 232 py-const-files := $(patsubst %.pysym,%.py,$(gen-py-const-headers))
 233 py-const-dir := $(objpfx)
 234 py-const := $(addprefix $(py-const-dir),$(py-const-files))
 235 py-const-script := $(..)scripts/gen-py-const.awk
 236
 237 # This is a hack we use to generate .py files with constants for Python
 238 # pretty printers.  It works the same way as gen-as-const.
 239 # See scripts/gen-py-const.awk for details on how the awk | gcc mechanism
 240 # works.
 241 #
 242 # $@.tmp and $@.tmp2 are temporary files we use to store the partial contents
 243 # of the target file.  We do this instead of just writing on $@ because, if the
 244 # build process terminates prematurely, re-running Make wouldn't run this rule
 245 # since Make would see that the target file already exists (despite it being
 246 # incomplete).
 247 #
 248 # The sed line replaces "@name@SOME_NAME@value@SOME_VALUE@" strings from the
 249 # output of 'gcc -S' with "SOME_NAME = SOME_VALUE" strings.
 250 # The '-n' option, combined with the '/p' command, makes sed output only the
 251 # modified lines instead of the whole input file.  The output is redirected
 252 # to a .py file; we'll import it in the pretty printers file to read
 253 # the constants generated by gen-py-const.awk.
 254 # The regex has two capturing groups, for SOME_NAME and SOME_VALUE
 255 # respectively.  Notice SOME_VALUE may be prepended by a special character,
 256 # depending on the assembly syntax (e.g. immediates are prefixed by a '$'
 257 # in AT&T x86, and by a '#' in ARM).  We discard it using a complemented set
 258 # before the second capturing group.
 259 $(py-const): $(py-const-dir)%.py: %.pysym $(py-const-script) \
 260              $(common-before-compile)
 261         $(make-target-directory)
 262         $(AWK) -f $(py-const-script) $< \
 263                | $(CC) -S -o $@.tmp $(CFLAGS) $(CPPFLAGS) -x c -
 264         echo '# GENERATED FILE\n' > $@.tmp2
 265         echo '# Constant definitions for pretty printers.' >> $@.tmp2
 266         echo '# See gen-py-const.awk for details.\n' >> $@.tmp2
 267         sed -n -r 's/^.*@name@([^@]+)@value@[^[:xdigit:]Xx-]*([[:xdigit:]Xx-]+)@.*/\1 = \2/p' \
 268             $@.tmp >> $@.tmp2
 269         mv -f $@.tmp2 $@
 270         rm -f $@.tmp
 271
 272 generated += $(py-const)
 273 endif  # gen-py-const-headers
 274
 275 ifdef gen-as-const-headers
 276 # Generating headers for assembly constants.
 277 # We need this defined early to get into before-compile before
 278 # it's used in sysd-rules, below.
 279 # Define GEN_AS_CONST_HEADERS to avoid circular dependency [BZ #22792].
 280 # NB: <tcb-offsets.h> is generated from tcb-offsets.sym to define
 281 # offsets and sizes of types in <tls.h> and maybe <pthread.h> which
 282 # may include <tcb-offsets.h>.  Target header files can check if
 283 # GEN_AS_CONST_HEADERS is defined to avoid circular dependency which
 284 # may lead to build hang on a many-core machine.
 285 $(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.awk \
 286                                            %.sym $(common-before-compile)
 287         $(AWK) -f $< $(filter %.sym,$^) \
 288         | $(CC) -S -o $(@:.h.d=.h)T3 $(CFLAGS) $(CPPFLAGS) \
 289                 -DGEN_AS_CONST_HEADERS -x c - \
 290                 -MD -MP -MF $(@:.h=.h.d)T -MT '$(@:.h=.h.d) $(@:.h.d=.h)'
 291         sed -n 's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$$/#define \1 \2/p' \
 292                 $(@:.h.d=.h)T3 > $(@:.h.d=.h)T
 293         rm -f $(@:.h.d=.h)T3
 294         sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
 295             $(@:.h=.h.d)T > $(@:.h=.h.d)T2
 296         rm -f $(@:.h=.h.d)T
 297         mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
 298         mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
 299 vpath %.sym $(sysdirs)
 300 before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 301
 302 tests-internal += $(gen-as-const-headers:%.sym=test-as-const-%)
 303 generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
 304 $(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.awk $(..)Makerules \
 305                             %.sym $(common-objpfx)%.h
 306         ($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
 307          $(AWK) -v test=1 -f $< $(filter %.sym,$^); \
 308          echo '#include "$(..)test-skeleton.c"') > $@T
 309         mv -f $@T $@
 310 endif
 311 \f
 312 ifeq (yes,$(build-shared))
 313 # Generate the header containing the names of all shared libraries.
 314 # We use a stamp file to avoid unnecessary recompilations.
 315 before-compile += $(common-objpfx)gnu/lib-names.h
 316 ifeq ($(soversions.mk-done),t)
 317 ifndef abi-variants
 318 lib-names-h-abi = gnu/lib-names.h
 319 lib-names-stmp-abi = gnu/lib-names.stmp
 320 else
 321 lib-names-h-abi = gnu/lib-names-$(default-abi).h
 322 lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp
 323 before-compile += $(common-objpfx)$(lib-names-h-abi)
 324 common-generated += gnu/lib-names.h
 325 install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi)
 326 $(common-objpfx)gnu/lib-names.h:
 327         $(make-target-directory)
 328         { \
 329          echo '/* This file is automatically generated.';\
 330          echo '   It defines macros to allow user program to find the shared'; \
 331          echo '   library files which come as part of GNU libc.  */'; \
 332          echo '#ifndef __GNU_LIB_NAMES_H'; \
 333          echo '#define __GNU_LIB_NAMES_H        1'; \
 334          echo ''; \
 335          $(if $(abi-includes), \
 336           $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 337           echo '';) \
 338          $(foreach v,$(abi-variants),\
 339          $(if $(abi-$(v)-condition),\
 340          echo '#if $(abi-$(v)-condition)'; \
 341          echo '# include <gnu/lib-names-$(v).h>'); \
 342          $(if $(abi-$(v)-condition),echo '#endif';)) \
 343          echo ''; \
 344          echo '#endif   /* gnu/lib-names.h */'; \
 345         } >  $@
 346 endif
 347 $(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @:
 348 $(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \
 349                                        $(common-objpfx)soversions.i
 350         $(make-target-directory)
 351         { \
 352          $(if $(abi-variants), \
 353          echo '/* This file is automatically generated.  */';\
 354          echo '#ifndef __GNU_LIB_NAMES_H'; \
 355          echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \
 356          echo '#endif';, \
 357          echo '/* This file is automatically generated.';\
 358          echo '   It defines macros to allow user program to find the shared'; \
 359          echo '   library files which come as part of GNU libc.  */'; \
 360          echo '#ifndef __GNU_LIB_NAMES_H'; \
 361          echo '#define __GNU_LIB_NAMES_H        1';) \
 362          echo ''; \
 363          ($(foreach s,$(all-sonames), echo $(s);)) \
 364          | LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \
 365          $(if $(abi-variants),, \
 366          echo ''; \
 367          echo '#endif   /* gnu/lib-names.h */';) \
 368         } >  ${@:stmp=T}
 369         $(move-if-change) ${@:stmp=T} ${@:stmp=h}
 370         touch $@
 371 endif
 372 common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi)
 373 endif
 374 \f
 375 ###############################################################################
 376 # NOTE!  Everything adding to before-compile needs to come before this point! #
 377 ###############################################################################
 378
 379 # Generate an ordered list of implicit rules which find the source files in
 380 # each sysdep directory.  The old method was to use vpath to search all the
 381 # sysdep directories.  However, that had the problem that a .S file in a
 382 # later directory would be chosen over a .c file in an earlier directory,
 383 # which does not preserve the desired sysdeps ordering behavior.
 384
 385 # System-dependent makefiles can put in `inhibit-sysdep-asm' regexps
 386 # matching sysdep directories whose assembly source files should be
 387 # suppressed.
 388
 389 -include $(common-objpfx)sysd-rules
 390 ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
 391 # The value of $(+sysdep_dirs) the sysd-rules was computed for
 392 # differs from the one we are using now.  So force a rebuild of sysd-rules.
 393 sysd-rules-force = FORCE
 394 FORCE:
 395 endif
 396 $(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
 397                             $(common-objpfx)config.make $(..)Makerules \
 398                             $(sysdep-makefiles) $(sysdep-makeconfigs) \
 399                             $(sysd-rules-force)
 400         -@rm -f $@T
 401         LC_ALL=C $(AWK) -f $< > $@T \
 402                         -v all_object_suffixes='$(all-object-suffixes)' \
 403                         -v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
 404                         -v sysd_rules_patterns='$(sysd-rules-patterns)' \
 405                         -v config_sysdirs='$(config-sysdirs)'
 406         mv -f $@T $@
 407
 408 ifndef sysd-rules-done
 409 # Don't do deps until this exists, because it provides rules to make the deps.
 410 no_deps=t
 411 endif
 412
 413 define o-iterator-doit
 414 $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
 415 endef
 416 object-suffixes-left := $(all-object-suffixes)
 417 include $(o-iterator)
 418
 419 define o-iterator-doit
 420 $(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
 421 endef
 422 object-suffixes-left := $(all-object-suffixes)
 423 include $(o-iterator)
 424
 425 define o-iterator-doit
 426 $(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
 427 endef
 428 object-suffixes-left := $(all-object-suffixes)
 429 include $(o-iterator)
 430
 431 # Omit the objpfx rules when building in the source tree, because
 432 # objpfx is empty and so these rules just override the ones above.
 433 ifdef objpfx
 434 # Define first rules to find the source files in $(objpfx).
 435 # Generated source files will end up there.
 436 define o-iterator-doit
 437 $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
 438 endef
 439 object-suffixes-left := $(all-object-suffixes)
 440 include $(o-iterator)
 441
 442 define o-iterator-doit
 443 $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 444 endef
 445 object-suffixes-left := $(all-object-suffixes)
 446 include $(o-iterator)
 447 endif
 448
 449 # Generate .dT files as we compile.
 450 compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
 451 compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 452 compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 453 compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)
 454
 455 # Like compile-mkdep-flags, but for use with $(BUILD_CC).  We don't want to
 456 # track system includes here, they may spuriously trigger an install rule,
 457 # and would cause the check-local-headers test to fail.
 458 native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@
 459
 460 # GCC can grok options after the file name, and it looks nicer that way.
 461 compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
 462 compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
 463 compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
 464                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 465 COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
 466 COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
 467                   $(ASFLAGS) $(ASFLAGS-$(suffix $@))
 468
 469 # We need this for the output to go in the right place.  It will default to
 470 # empty if make was configured to work with a cc that can't grok -c and -o
 471 # together.  You can't compile the C library with such a compiler.
 472 OUTPUT_OPTION = -o $@
 473
 474 # This is the end of the pipeline for compiling generated C code.
 475 compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)
 476
 477 # We need the $(CFLAGS) to be in there to have the right predefines during
 478 # the dependency run for C sources.  But having it for assembly sources can
 479 # get the wrong predefines.
 480 S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
 481
 482 define +make-deps
 483 $(make-target-directory)
 484 $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
 485              $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | sed -e\
 486 's,$(subst .,\.,$(@F:.d=.o)),$(foreach o,$(all-object-suffixes),$(@:.d=$o)) $@,' \
 487 $(sed-remove-objpfx) $(sed-remove-dotdot) > $(@:.d=.T)
 488 mv -f $(@:.d=.T) $@ $(generate-md5)
 489 endef
 490
 491 ifneq (,$(objpfx))
 492 # Continuation lines here are dangerous because they introduce spaces!
 493 define sed-remove-objpfx
 494 -e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
 495 -e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
 496 endef
 497 endif
 498 \f
 499 # Modify the list of routines we build for different targets
 500
 501 ifeq (yes,$(build-shared))
 502 ifndef libc.so-version
 503 # Undefine this because it can't work when we libc.so is unversioned.
 504 static-only-routines =
 505 endif
 506 endif
 507
 508 elide-routines.oS += $(filter-out $(static-only-routines),\
 509                                   $(routines) $(aux) $(sysdep_routines))
 510 elide-routines.os += $(static-only-routines)
 511
 512 # If we have versioned code we don't need the old versions in any of the
 513 # static libraries.
 514 elide-routines.o  += $(shared-only-routines)
 515 elide-routines.op += $(shared-only-routines)
 516 \f
 517 # Shared library building.
 518
 519 ifeq (yes,$(build-shared))
 520
 521 # Reference map file only when shared libraries are built and a map file name
 522 # is given.
 523 ifeq ($(build-shared),yes)
 524 map-file = $(firstword $($(@F:.so=-map)) \
 525                        $(addprefix $(common-objpfx), \
 526                                    $(filter $(@F:.so=.map),$(version-maps))))
 527 load-map-file = $(map-file:%=-Wl,--version-script=%)
 528 endif
 529
 530 # Compiler arguments to use to link a shared object with libc and
 531 # ld.so.  This is intended to be as similar as possible to a default
 532 # link with an installed libc.
 533 link-libc-args = -Wl,--start-group \
 534                  $(libc-for-link) \
 535                  $(common-objpfx)libc_nonshared.a \
 536                  $(as-needed) $(elf-objpfx)ld.so $(no-as-needed) \
 537                  -Wl,--end-group
 538
 539 # The corresponding shared libc to use.  This may be modified for a
 540 # particular target.
 541 libc-for-link = $(common-objpfx)libc.so
 542
 543 # The corresponding dependencies.  As these are used in dependencies,
 544 # not just commands, they cannot use target-specific variables so need
 545 # to name both possible libc.so objects.
 546 link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
 547                  $(common-objpfx)libc_nonshared.a $(elf-objpfx)ld.so
 548
 549 # Pattern rule to build a shared object from an archive of PIC objects.
 550 # This must come after the installation rules so Make doesn't try to
 551 # build shared libraries in place from the installed *_pic.a files.
 552 # $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
 553 # on other shared objects.  The linking with libc and ld.so is intended
 554 # to be as similar as possible to a default link with an installed libc.
 555 lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(link-libc-deps)
 556         $(build-shlib) $(link-libc-args)
 557         $(call after-link,$@)
 558
 559 define build-shlib-helper
 560 $(LINK.o) -shared -static-libgcc -Wl,-O1 $(sysdep-LDFLAGS) \
 561           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(rtld-LDFLAGS) \
 562           $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
 563           $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
 564           -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 565           $(LDFLAGS.so) $(LDFLAGS-lib.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
 566           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 567 endef
 568
 569 ifeq (yes,$(use-default-link))
 570 # If the linker is good enough, we can let it use its default linker script.
 571 shlib-lds =
 572 shlib-lds-flags =
 573 else
 574 # binutils only position loadable notes into the first page for binaries,
 575 # not for shared objects
 576 $(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
 577         $(LINK.o) -shared -Wl,-O1 \
 578                   -nostdlib -nostartfiles \
 579                   $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
 580                   -Wl,--verbose 2>&1 | \
 581           sed > $@T \
 582               -e '/^=========/,/^=========/!d;/^=========/d' \
 583               $(if $(filter yes,$(have-hash-style)), \
 584                    -e 's/^.*\.gnu\.hash[        ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 585                    -e '/^[      ]*\.hash[       ]*:.*$$/{h;d;}' \
 586                    -e '/DATA_SEGMENT_ALIGN/{H;g}' \
 587                 , \
 588                    -e 's/^.*\.hash[     ]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
 589                ) \
 590               -e 's/^.*\*(\.dynbss).*$$/& \
 591                  PROVIDE(__start___libc_freeres_ptrs = .); \
 592                  *(__libc_freeres_ptrs) \
 593                  PROVIDE(__stop___libc_freeres_ptrs = .);/'\
 594               -e 's@^.*\*(\.jcr).*$$@& \
 595                  PROVIDE(__start___libc_subfreeres = .);\
 596                  __libc_subfreeres : { *(__libc_subfreeres) }\
 597                  PROVIDE(__stop___libc_subfreeres = .);\
 598                  PROVIDE(__start___libc_atexit = .);\
 599                  __libc_atexit : { *(__libc_atexit) }\
 600                  PROVIDE(__stop___libc_atexit = .);\
 601                  PROVIDE(__start___libc_IO_vtables = .);\
 602                  __libc_IO_vtables : { *(__libc_IO_vtables) }\
 603                  PROVIDE(__stop___libc_IO_vtables = .);\
 604                  /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
 605         test -s $@T
 606         mv -f $@T $@
 607 common-generated += shlib.lds
 608
 609 shlib-lds = $(common-objpfx)shlib.lds
 610 shlib-lds-flags = -T $(shlib-lds)
 611 endif
 612
 613 define build-shlib
 614 $(build-shlib-helper) -o $@ $(shlib-lds-flags) \
 615           $(csu-objpfx)abi-note.o $(build-shlib-objlist)
 616 endef
 617
 618 define build-module-helper
 619 $(LINK.o) -shared -static-libgcc $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
 620           $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
 621           -B$(csu-objpfx) $(load-map-file) \
 622           $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
 623           -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
 624 endef
 625
 626 # This macro is similar to build-shlib but it does not define a soname
 627 # and it does not depend on the destination name to start with `lib'.
 628 # binutils only position loadable notes into the first page for binaries,
 629 # not for shared objects
 630 define build-module
 631 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 632           $(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
 633 $(call after-link,$@)
 634 endef
 635 define build-module-asneeded
 636 $(build-module-helper) -o $@ $(shlib-lds-flags) \
 637           $(csu-objpfx)abi-note.o \
 638           -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
 639           $(link-libc-args)
 640 $(call after-link,$@)
 641 endef
 642
 643 # sofini.os must be placed last since it terminates .eh_frame section.
 644 build-module-helper-objlist = \
 645         $(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
 646                    $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
 647                                 $(elf-objpfx)sofini.os \
 648                                 $(link-libc-deps),$^))
 649
 650 build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
 651 build-shlib-objlist = $(build-module-helper-objlist) \
 652                       $(LDLIBS-$(@F:lib%.so=%).so) \
 653                       $(filter $(elf-objpfx)sofini.os,$^)
 654
 655 # Don't try to use -lc when making libc.so itself.
 656 # Also omits crti.o and crtn.o, which we do not want
 657 # since we define our own `.init' section specially.
 658 LDFLAGS-c.so = -nostdlib -nostartfiles
 659 # But we still want to link libc.so against $(libc.so-gnulib).
 660 LDLIBS-c.so += $(libc.so-gnulib)
 661 # Give libc.so an entry point and make it directly runnable itself.
 662 LDFLAGS-c.so += -e __libc_main
 663 # Pre-link the objects of libc_pic.a so that we can locally resolve
 664 # COMMON symbols before we link against ld.so.  This is because ld.so
 665 # contains some of libc_pic.a already, which will prevent the COMMONs
 666 # from being allocated in libc.so, which introduces evil dependencies
 667 # between libc.so and ld.so, which can make it impossible to upgrade.
 668 $(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
 669         $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
 670         $(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@
 671
 672 ifeq (,$(strip $(shlib-lds-flags)))
 673 # Generate a list of -R options to excise .gnu.glibc-stub.* sections.
 674 $(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
 675         $(OBJDUMP) -h $< | \
 676         $(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
 677                 > $@T
 678         mv -f $@T $@
 679 # Apply those -R options.
 680 $(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
 681                                    $(common-objpfx)libc_pic.os
 682         $(OBJCOPY) @$^ $@
 683 generated += libc_pic.opts libc_pic.os.clean
 684
 685 libc_pic_clean := .clean
 686 endif
 687
 688 # Build a possibly-modified version of libc_pic.a for use in building
 689 # linkobj/libc.so.
 690 ifeq (,$(filter sunrpc,$(subdirs)))
 691 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a
 692         $(make-target-directory)
 693         ln -f $< $@
 694 else
 695 $(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a \
 696                                     $(common-objpfx)sunrpc/librpc_compat_pic.a
 697         $(make-target-directory)
 698         (cd $(common-objpfx)linkobj; \
 699          $(AR) x ../libc_pic.a; \
 700          rm $$($(AR) t ../sunrpc/librpc_compat_pic.a | sed 's/^compat-//'); \
 701          $(AR) x ../sunrpc/librpc_compat_pic.a; \
 702          $(AR) cr libc_pic.a *.os; \
 703          rm *.os)
 704 endif # $(subdirs) contains sunrpc
 705
 706 # Clear link-libc-deps for the libc.so libraries so build-shlibs does not
 707 # filter ld.so out of the list of linked objects.
 708 $(common-objpfx)libc.so: link-libc-deps = # empty
 709 $(common-objpfx)linkobj/libc.so: link-libc-deps = # empty
 710
 711 # Use our own special initializer and finalizer files for the libc.so
 712 # libraries.
 713 $(common-objpfx)libc.so: $(elf-objpfx)soinit.os \
 714                          $(common-objpfx)libc_pic.os$(libc_pic_clean) \
 715                          $(elf-objpfx)sofini.os \
 716                          $(elf-objpfx)interp.os \
 717                          $(elf-objpfx)ld.so \
 718                          $(shlib-lds)
 719         $(build-shlib)
 720         $(call after-link,$@)
 721
 722 $(common-objpfx)linkobj/libc.so: $(elf-objpfx)soinit.os \
 723                          $(common-objpfx)linkobj/libc_pic.a \
 724                          $(elf-objpfx)sofini.os \
 725                          $(elf-objpfx)interp.os \
 726                          $(elf-objpfx)ld.so \
 727                          $(shlib-lds)
 728         $(build-shlib)
 729         $(call after-link,$@)
 730
 731 ifeq ($(build-shared),yes)
 732 $(common-objpfx)libc.so: $(common-objpfx)libc.map
 733 endif
 734 common-generated += libc.so libc_pic.os
 735 ifdef libc.so-version
 736 $(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
 737         $(make-link)
 738 common-generated += libc.so$(libc.so-version)
 739 endif
 740 endif
 741 \f
 742 # Figure out the source filenames in this directory.
 743
 744 override sources := $(addsuffix .c,\
 745                         $(filter-out $(elided-routines),\
 746                             $(routines) $(aux) \
 747                             $(sysdep_routines)))
 748 sysdep_routines := $(sysdep_routines)
 749
 750 headers := $(headers) $(sysdep_headers)
 751
 752 # This is the list of all object files, gotten by
 753 # replacing every ".c" in `sources' with a ".o".
 754 override objects := $(addprefix $(objpfx),$(sources:.c=.o))
 755
 756
 757 # The makefile may define $(extra-libs) with `libfoo libbar'
 758 # to build libfoo.a et al from the modules listed in $(libfoo-routines).
 759 ifdef extra-libs
 760 # extra-lib.mk is included once for each extra lib to define rules
 761 # to build it, and to add its objects to the various variables.
 762 # During its evaluation, $(lib) is set to the name of the library.
 763 extra-libs-left := $(extra-libs)
 764 include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
 765 endif
 766
 767
 768 # The makefile may define $(modules-names) to build additional modules.
 769 # These are built with $(build-module), except any in $(modules-names-nobuild).
 770 # MODULE_NAME=extramodules, except any in $(modules-names-tests).
 771 ifdef modules-names
 772 cpp-srcs-left := $(filter-out $(modules-names-tests),$(modules-names))
 773 ifneq (,$(cpp-srcs-left))
 774 lib := extramodules
 775 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
 776 endif
 777
 778 ifdef modules-names-tests
 779 cpp-srcs-left := $(filter $(modules-names-tests),$(modules-names))
 780 ifneq (,$(cpp-srcs-left))
 781 lib := testsuite
 782 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
 783 endif
 784 endif
 785
 786 extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
 787 $(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
 788                 $(objpfx)%.os $(shlib-lds) $(link-libs-deps)
 789         $(build-module)
 790 endif
 791 \f
 792 +depfiles := $(sources:.c=.d) \
 793              $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
 794              $(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
 795              $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
 796              $(addsuffix .d,$(tests) $(tests-internal) $(xtests) $(test-srcs))
 797 ifeq ($(build-programs),yes)
 798 +depfiles += $(addsuffix .d,$(others) $(sysdep-others))
 799 endif
 800 +depfiles := $(addprefix $(objpfx),\
 801                          $(filter-out $(addsuffix .d,$(omit-deps)),\
 802                                       $(+depfiles)))
 803 all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
 804 +depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
 805              $(wildcard $(all-dt-files:.dt=.d))
 806
 807 # This is a funny rule in that it removes its input file.
 808 %.d: %.dt
 809         @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
 810          mv -f $(@:.d=.T) $@ && \
 811          rm -f $<
 812
 813 # Avoid the .h.d files for any .sym files whose .h files don't exist yet.
 814 # They will be generated when they're needed, and trying too early won't work.
 815 +gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
 816 +depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
 817                                                 $(+gen-as-const)))
 818
 819 ifdef +depfiles
 820 ifneq ($(no_deps),t)
 821 -include $(+depfiles)
 822 endif
 823 endif
 824 \f\f
 825 # Maximize efficiency by minimizing the number of rules.
 826 .SUFFIXES:      # Clear the suffix list.  We don't use suffix rules.
 827 # Don't define any builtin rules.
 828 MAKEFLAGS := $(MAKEFLAGS)r
 829
 830 # Generic rule for making directories.
 831 %/:
 832 # mkdir isn't smart enough to strip a trailing /.
 833 # We always require a mkdir which supports the -p option to avoid error
 834 # messages in case of races.
 835         mkdir -p $(@:%/=%)
 836 \f
 837 # Make sure that object files are not removed
 838 # when they are intermediates between sources and library members.
 839 .PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))
 840
 841 # Make sure that the parent library archive is never removed.
 842 .PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 843 \f
 844 # Use the verbose option of ar and tar when not running silently.
 845 ifeq    "$(findstring s,$(MAKEFLAGS))" ""       # if not -s
 846 verbose := v
 847 else                                            # -s
 848 verbose :=
 849 endif                                           # not -s
 850
 851 ARFLAGS := r$(verbose)
 852 CREATE_ARFLAGS := cru$(verbose)
 853 \f
 854 # This makes all the object files in the parent library archive.
 855
 856 .PHONY: lib lib-noranlib
 857 lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
 858 lib-noranlib: libobjs
 859
 860 # For object-suffix $o, the list of objects with that suffix.
 861 # Makefiles can define `elide-routines.so = foo' to leave foo.so out.
 862 o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
 863                                                        $(elide-routines$o)),\
 864                                             $(objects))) \
 865             $(addprefix $(objpfx),$(o-objects$o))
 866
 867 others: $(addprefix $(objpfx),$(install-lib))
 868
 869 ifndef objects
 870
 871 # Create the stamp$o files to keep the parent makefile happy.
 872 subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 873 $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
 874         $(make-target-directory)
 875         rm -f $@; > $@
 876 else
 877
 878 # Define explicit rules to update each $(objpfx)stamp.SUFFIX
 879 # timestamp file; these rules (one explicit rule is generated for each
 880 # object suffix) write a list of objects to update in the stamp file.
 881 # The parent will then actually add them all to the archive in the
 882 # archive rule, below.
 883 define o-iterator-doit
 884 $(objpfx)stamp$o: $(o-objects); $$(do-stamp)
 885 endef
 886 define do-stamp
 887 $(make-target-directory)
 888 echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
 889 mv -f $@T $@
 890 endef
 891 object-suffixes-left := $(object-suffixes-for-libc)
 892 include $(o-iterator)
 893
 894 endif
 895
 896 # Now define explicit rules to build the library archives; these depend
 897 # on the stamp files built above.
 898 define o-iterator-doit
 899 $(common-objpfx)$(patsubst %,$(libtype$o),c): \
 900                 $(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
 901 endef
 902 define do-makelib
 903 cd $(common-objdir) && \
 904 $(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
 905 endef
 906 subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
 907 subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
 908 ifndef subdir
 909 $(subdirs-stamps): subdir_lib;
 910 endif
 911 object-suffixes-left = $(object-suffixes-for-libc)
 912 include $(o-iterator)
 913
 914
 915 # This makes all the object files.
 916 .PHONY: objects objs libobjs extra-objs
 917 objects objs: libobjs extra-objs
 918 libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
 919 extra-objs: $(addprefix $(objpfx),$(extra-objs))
 920
 921 # Canned sequence for building an extra library archive.
 922 define build-extra-lib
 923 $(patsubst %/,cd % &&,$(objpfx)) \
 924 $(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
 925       $(patsubst $(objpfx)%,%,$^)
 926 endef
 927 \f
 928 # Installation.
 929
 930 .PHONY: force-install
 931 force-install:
 932
 933 # $(install-lib) are installed from the object directory into $(libdir);
 934 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 935 # unless they also appear in $(non-lib.a).  $(install-data) are installed as
 936 # they are into $(datadir).  $(headers) are installed as they are in
 937 # $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
 938 # are installed from the object directory into $(bindir), $(bindir) and
 939 # $(sbindir), respectively.  $(install-others) and $(install-others-programs)
 940 # are absolute path names of files to install; rules to install them are
 941 # defined elsewhere.
 942
 943 # The simple library name to install libc.a under.
 944 # This could be defined by a sysdep Makefile.
 945 ifndef libc-name
 946 libc-name := c
 947 endif
 948
 949 define do-install
 950 $(make-target-directory)
 951 $(INSTALL_DATA) $< $@
 952 endef
 953
 954 # Make the target directory if it doesn't exist, using the `mkinstalldirs'
 955 # script that does `mkdir -p' even if `mkdir' doesn't support that flag.
 956 define make-target-directory
 957 $(addprefix $(..)./scripts/mkinstalldirs ,\
 958             $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
 959 endef
 960
 961 # Any directory (parent or subdir) should install libc.a; this way
 962 # "make install" in a subdir is guaranteed to install everything it changes.
 963 installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 964                              $(inst_libdir)/$(patsubst %,$(libtype$o),\
 965                                                      $(libprefix)$(libc-name)))
 966
 967 .PHONY: check-install-supported
 968 check-install-supported:
 969
 970 # Check to see if the prefix or exec_prefix GNU standard variable
 971 # has been overridden on the command line and, if so, fail with
 972 # an error message since doing so is not supported (set DESTDIR
 973 # instead).
 974 ifeq ($(origin prefix),command line)
 975 check-install-supported:
 976         $(error Overriding prefix is not supported. Set DESTDIR instead.)
 977 endif
 978
 979 ifeq ($(origin exec_prefix),command line)
 980 check-install-supported:
 981         $(error Overriding exec_prefix is not supported. Set DESTDIR instead.)
 982 endif
 983
 984 install: check-install-supported
 985
 986 install: $(installed-libcs)
 987 $(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 988         $(make-target-directory)
 989         $(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 990
 991 define do-install-program
 992 $(make-target-directory)
 993 $(INSTALL_PROGRAM) $< $@.new
 994 mv -f $@.new $@
 995 endef
 996
 997 define do-install-script
 998 $(make-target-directory)
 999 $(INSTALL_SCRIPT) $< $@.new
1000 mv -f $@.new $@
1001 endef
1002
1003 install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
1004 install-lib := $(filter-out %.so %_pic.a,$(install-lib))
1005
1006 ifeq (yes,$(build-shared))
1007 # Find which .so's have versions.
1008 versioned := $(strip $(foreach so,$(install-lib.so),\
1009                                $(patsubst %,$(so),$($(so)-version))))
1010
1011 install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
1012 install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
1013
1014 # For versioned libraries, we install three files:
1015 #       $(inst_libdir)/libfoo.so        -- for linking, symlink or ld script
1016 #       $(inst_slibdir)/libfoo.so.NN    -- for loading by SONAME, symlink
1017 #       $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
1018 lib-version := $(firstword $($(subdir)-version) $(version))
1019 install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
1020                       $(foreach L,$(install-lib.so-versioned),\
1021                                 $(inst_libdir)/$L \
1022                                 $(inst_slibdir)/$(L:.so=)-$(lib-version).so \
1023                                 $(inst_slibdir)/$L$($L-version))
1024
1025 # Install all the unversioned shared libraries.
1026 $(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
1027     $(objpfx)%.so $(+force)
1028         $(do-install-program)
1029
1030 ifneq ($(findstring -s,$(LN_S)),)
1031 define make-link
1032 rm -f $@.new
1033 $(SHELL) $(..)scripts/rellns-sh $< $@.new
1034 mv -f $@.new $@
1035 endef
1036 define make-link-multidir
1037 $(patsubst %/,cd %,$(objpfx)); \
1038   $(addprefix $(abspath $(..)scripts/mkinstalldirs) ,$(dir $(multidir))); \
1039   $(LN_S) . $(multidir) 2> /dev/null; \
1040   test -L $(multidir)
1041 endef
1042 else
1043 # If we have no symbolic links don't bother with rellns-sh.
1044 define make-link
1045 rm -f $@.new
1046 $(LN_S) $< $@.new
1047 mv -f $@.new $@
1048 endef
1049 define make-link-multidir
1050 $(make-target-directory)
1051 ln -f $(objpfx)/$(@F) $@
1052 endef
1053 endif
1054
1055 ifeq (yes,$(build-shared))
1056 ifeq (no,$(cross-compiling))
1057 symbolic-link-prog := $(elf-objpfx)sln
1058 symbolic-link-list := $(elf-objpfx)symlink.list
1059 define make-shlib-link
1060 echo `$(..)scripts/rellns-sh -p $< $@` $@ >> $(symbolic-link-list)
1061 endef
1062 else # cross-compiling
1063 # We need a definition that can be used by elf/Makefile's install rules.
1064 symbolic-link-prog = $(LN_S)
1065 endif
1066 endif
1067 ifndef make-shlib-link
1068 define make-shlib-link
1069 rm -f $@
1070 $(LN_S) `$(..)scripts/rellns-sh -p $< $@` $@
1071 endef
1072 endif
1073
1074 ifdef libc.so-version
1075 # For a library specified to be version N, install three files:
1076 # libc.so       ->      libc.so.N       (e.g. libc.so.6)
1077 # libc.so.6     ->      libc-VERSION.so (e.g. libc-1.10.so)
1078
1079 $(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
1080                                            $(+force)
1081         $(make-shlib-link)
1082 $(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
1083         $(do-install-program)
1084 install: $(inst_slibdir)/libc.so$(libc.so-version)
1085
1086 # This fragment of linker script gives the OUTPUT_FORMAT statement
1087 # for the configuration we are building.  We put this statement into
1088 # the linker scripts we install for -lc et al so that they will not be
1089 # used by a link for a different format on a multi-architecture system.
1090 $(common-objpfx)format.lds: $(..)scripts/output-format.sed \
1091                             $(common-objpfx)config.make \
1092                             $(common-objpfx)config.h $(..)Makerules
1093 ifneq (unknown,$(output-format))
1094         echo > $@.new 'OUTPUT_FORMAT($(output-format))'
1095 else
1096         $(LINK.o) -shared $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
1097                   $(LDFLAGS.so) $(LDFLAGS-lib.so) \
1098                   -x c /dev/null -o $@.so -Wl,--verbose -v 2>&1 \
1099         | sed -n -f $< > $@.new
1100         test -s $@.new
1101         rm -f $@.so
1102 endif
1103         mv -f $@.new $@
1104 common-generated += format.lds
1105
1106 ifndef subdir
1107 # What we install as libc.so for programs to link against is in fact a
1108 # link script.  It contains references for the various libraries we need.
1109 # The libc.so object is not complete since some functions are only defined
1110 # in libc_nonshared.a.
1111 # We need to use absolute paths since otherwise local copies (if they exist)
1112 # of the files are taken by the linker.
1113 install: $(inst_libdir)/libc.so
1114 $(inst_libdir)/libc.so: $(common-objpfx)format.lds \
1115                         $(common-objpfx)libc.so$(libc.so-version) \
1116                         $(inst_libdir)/$(patsubst %,$(libtype.oS),\
1117                                                   $(libprefix)$(libc-name)) \
1118                         $(+force)
1119         (echo '/* GNU ld script';\
1120          echo '   Use the shared library, but some functions are only in';\
1121          echo '   the static library, so try that secondarily.  */';\
1122          cat $<; \
1123          echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
1124               '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
1125               ' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
1126         ) > $@.new
1127         mv -f $@.new $@
1128
1129 endif
1130
1131 else
1132 install: $(inst_slibdir)/libc.so
1133 $(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
1134         $(do-install-program)
1135 endif
1136
1137 ifneq (,$(versioned))
1138 # Produce three sets of rules as above for all the smaller versioned libraries.
1139
1140 define o-iterator-doit
1141 $(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
1142 endef
1143 object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
1144 ifneq (,$(object-suffixes-left))
1145 include $(o-iterator)
1146 endif
1147
1148 # Make symlinks in the build directory, because the versioned names might
1149 # be referenced by a DT_NEEDED in another library.
1150 define o-iterator-doit
1151 $(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
1152 endef
1153 object-suffixes-left := $(versioned)
1154 include $(o-iterator)
1155
1156 generated += $(foreach o,$(versioned),$o$($o-version))
1157
1158 ifeq (,$($(subdir)-version))
1159 define o-iterator-doit
1160 $(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
1161                                  $(+force);
1162         $$(make-shlib-link)
1163 endef
1164 object-suffixes-left := $(versioned)
1165 include $(o-iterator)
1166
1167 define o-iterator-doit
1168 $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
1169         $$(do-install-program)
1170 endef
1171 object-suffixes-left := $(versioned)
1172 include $(o-iterator)
1173 else
1174 define o-iterator-doit
1175 $(inst_slibdir)/$o$($o-version): \
1176   $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
1177         $$(make-shlib-link)
1178 endef
1179 object-suffixes-left := $(versioned)
1180 include $(o-iterator)
1181
1182 define o-iterator-doit
1183 $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
1184         $$(do-install-program)
1185 endef
1186 object-suffixes-left := $(versioned)
1187 include $(o-iterator)
1188 endif
1189 endif
1190
1191 define do-install-so
1192 $(do-install-program)
1193 $(patsubst %,$(LN_S) -f $(@F) \
1194                         $(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
1195            $(filter-out %.so,$@))
1196 endef
1197
1198 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
1199 $(foreach v,$(so-versions),\
1200           $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
1201                                                $(+force)
1202         $(do-install-so)
1203 $(foreach v,$(so-versions),\
1204           $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
1205         $(do-install-so)
1206 endif
1207
1208 ifdef install-bin
1209 $(addprefix $(inst_bindir)/,$(install-bin)): \
1210     $(inst_bindir)/%: $(objpfx)% $(+force)
1211         $(do-install-program)
1212 endif
1213 ifdef install-bin-script
1214 $(addprefix $(inst_bindir)/,$(install-bin-script)): \
1215     $(inst_bindir)/%: $(objpfx)% $(+force)
1216         $(do-install-script)
1217 endif
1218 ifdef install-rootsbin
1219 $(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
1220    $(inst_rootsbindir)/%: $(objpfx)% $(+force)
1221         $(do-install-program)
1222 endif
1223 ifdef install-sbin
1224 $(addprefix $(inst_sbindir)/,$(install-sbin)): \
1225     $(inst_sbindir)/%: $(objpfx)% $(+force)
1226         $(do-install-program)
1227 endif
1228 ifdef install-lib
1229 install-lib.a := $(filter lib%.a,$(install-lib))
1230 install-lib.a := $(filter-out $(install-lib-ldscripts),$(install-lib.a))
1231 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
1232 ifdef install-lib-non.a
1233 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
1234   $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
1235         $(do-install)
1236 endif
1237 ifdef install-lib.a
1238 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
1239   $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
1240         $(do-install)
1241 endif
1242 endif
1243 ifdef install-data
1244 $(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
1245         $(do-install)
1246 endif
1247 headers := $(strip $(headers))
1248 ifdef headers
1249 # This implicit rule installs headers from the source directory.
1250 # It may be ignored in preference to rules from sysd-rules to find
1251 # headers in the sysdeps tree.
1252 $(inst_includedir)/%.h: $(objpfx)%.h $(+force)
1253         $(do-install)
1254 $(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
1255         $(do-install)
1256 $(inst_includedir)/%.h: %.h $(+force)
1257         $(do-install)
1258 $(inst_includedir)/%.h: $(..)include/%.h $(+force)
1259         $(do-install)
1260 headers-nonh := $(filter-out %.h,$(headers))
1261 ifdef headers-nonh
1262 $(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
1263                                                  % $(+force)
1264         $(do-install)
1265 endif   # headers-nonh
1266 endif   # headers
1267
1268 .PHONY: install-bin-nosubdir install-bin-script-nosubdir \
1269         install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
1270         install-data-nosubdir install-headers-nosubdir
1271 install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
1272 install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
1273 install-rootsbin-nosubdir: \
1274         $(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
1275 install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
1276 install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
1277                        $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
1278                        $(addprefix $(libprefix),$(install-lib-non.a)))
1279 install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
1280 install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
1281 install-others-nosubdir: $(install-others)
1282 install-others-programs-nosubdir: $(install-others-programs)
1283
1284 # We need all the `-nosubdir' targets so that `install' in the parent
1285 # doesn't depend on several things which each iterate over the subdirs.
1286 # This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
1287 # subroutine.  Then in the parent `install-FOO' also causes subdir makes.
1288 install-%:: install-%-nosubdir ;
1289
1290 .PHONY: install install-no-libc.a-nosubdir
1291 install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
1292                             install-lib-nosubdir install-others-nosubdir
1293 ifeq ($(build-programs),yes)
1294 install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
1295                             install-rootsbin-nosubdir install-sbin-nosubdir \
1296                             install-others-programs-nosubdir
1297 endif
1298 install: install-no-libc.a-nosubdir
1299 \f
1300 # Command to compile $< using the native libraries.
1301 define native-compile
1302 $(make-target-directory)
1303 $(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
1304             $< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
1305 endef
1306
1307 # We always want to use configuration definitions.
1308 ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
1309                    -DIS_IN_build -include $(common-objpfx)config.h
1310
1311 # Support the GNU standard name for this target.
1312 .PHONY: check
1313 check: tests
1314 # Special target to run tests which cannot be run unconditionally.
1315 # Maintainers should use this target.
1316 .PHONY: xcheck
1317 xcheck: xtests
1318
1319 # The only difference between MODULE_NAME=testsuite and MODULE_NAME=nonlib is
1320 # that almost all internal declarations from config.h, libc-symbols.h, and
1321 # include/*.h are not available to 'testsuite' code, but are to 'nonlib' code.
1322 all-testsuite := $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) \
1323                  $(tests-container))
1324 ifneq (,$(all-testsuite))
1325 cpp-srcs-left = $(all-testsuite)
1326 lib := testsuite
1327 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
1328 endif
1329
1330 all-nonlib := $(strip $(tests-internal) $(test-internal-extras) \
1331                       $(others) $(others-extras))
1332 ifneq (,$(all-nonlib))
1333 cpp-srcs-left = $(all-nonlib)
1334 lib := nonlib
1335 include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
1336 endif
1337
1338
1339 ifeq ($(build-shared),yes)
1340 # Generate normalized lists of symbols, versions, and data sizes.
1341 # This is handy for checking against existing library binaries.
1342
1343 %.symlist: $(..)scripts/abilist.awk %.dynsym
1344         LC_ALL=C $(AWK) -f $^ > $@T
1345         mv -f $@T $@
1346
1347 %.dynsym: %.so
1348         LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
1349         mv -f $@T $@
1350
1351 # A sysdeps/.../Makefile can set abilist-pattern to something like
1352 # %-foo.abilist to look for libc-foo.abilist instead of libc.abilist.
1353 # This makes sense if multiple ABIs can be most cleanly supported by a
1354 # configuration without using separate sysdeps directories for each.
1355 ifdef abilist-pattern
1356 vpath $(abilist-pattern) $(+sysdep_dirs)
1357 endif
1358
1359 vpath %.abilist $(+sysdep_dirs)
1360
1361 # The .PRECIOUS rule prevents the files built by an implicit rule whose
1362 # target pattern is %.symlist from being considered "intermediate files"
1363 # and automatically removed.  We only want these files to be removed by
1364 # 'make clean', which is handled by the 'generated' variable.
1365 .PRECIOUS: %.symlist
1366 generated += $(extra-libs:=.symlist)
1367
1368 ifdef abilist-pattern
1369 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1370                           $(objpfx)%.symlist
1371         $(check-abi-pattern); \
1372         $(evaluate-test)
1373 $(objpfx)check-abi-%.out: $(common-objpfx)config.make $(abilist-pattern) \
1374                           $(common-objpfx)%.symlist
1375         $(check-abi-pattern); \
1376         $(evaluate-test)
1377 endif
1378 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1379                           $(objpfx)%.symlist
1380         $(check-abi); \
1381         $(evaluate-test)
1382 $(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
1383                           $(common-objpfx)%.symlist
1384         $(check-abi); \
1385         $(evaluate-test)
1386 define check-abi-pattern
1387         diff -p -U 0 $(filter $(abilist-pattern),$^) $(filter %.symlist,$^) \
1388              > $@
1389 endef
1390 define check-abi
1391         diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^) > $@
1392 endef
1393
1394 ifdef abilist-pattern
1395 update-abi-%: $(objpfx)%.symlist $(abilist-pattern)
1396         $(update-abi-pattern)
1397 update-abi-%: $(common-objpfx)%.symlist $(abilist-pattern)
1398         $(update-abi-pattern)
1399 endif
1400 update-abi-%: $(objpfx)%.symlist %.abilist
1401         $(update-abi)
1402 update-abi-%: $(common-objpfx)%.symlist %.abilist
1403         $(update-abi)
1404 define update-abi-pattern
1405 @if cmp -s $^ 2> /dev/null; \
1406  then \
1407       echo '+++ $(filter $(abilist-pattern),$^) is unchanged'; \
1408  else cp -f $^; \
1409       echo '*** Now check $(filter $(abilist-pattern),$^) changes for correctness ***'; \
1410  fi
1411 endef
1412 define update-abi
1413 @if cmp -s $^ 2> /dev/null; \
1414  then \
1415       echo '+++ $(filter %.abilist,$^) is unchanged'; \
1416  else cp -f $^; \
1417       echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
1418  fi
1419 endef
1420
1421 # Patch all .abilist files for one DSO.  The find command locates
1422 # abilist files for all architectures.  The regular expression in the
1423 # find invocation is needed to separate libc.abilist and
1424 # libcrypt.abilist, for example.  It assumes that abilist-pattern, if
1425 # set, is of the form "%-SUFFIX", and not "%SUFFIX", that is, there is
1426 # a non-alphanumeric seperator between the pattern and the suffix
1427 # added.  The abilist files in /generic/ are filtered out because
1428 # these are expected to remain empty.
1429 define update-all-abi
1430 $(SHELL) $(..)scripts/update-abilist.sh $^ \
1431   $$(find $(..)sysdeps \
1432     -regextype posix-egrep -regex '.*/$*([^a-z0-9].*)?\.abilist$$' \
1433     \! -regex '.*/generic/.*')
1434 endef
1435 ifdef abilist-pattern
1436 update-all-abi-%: $(abilist-pattern) $(objpfx)%.symlist
1437         $(update-all-abi)
1438 update-all-abi-%: $(abilist-pattern) $(common-objpfx)%.symlist
1439         $(update-all-abi)
1440 endif
1441 update-all-abi-%: %.abilist $(objpfx)%.symlist
1442         $(update-all-abi)
1443 update-all-abi-%: %.abilist $(common-objpfx)%.symlist
1444         $(update-all-abi)
1445
1446 .PHONY: update-abi update-all-abi check-abi
1447 update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
1448 update-all-abi: $(patsubst %.so,update-all-abi-%,$(install-lib.so-versioned))
1449 check-abi-list = $(patsubst %.so,$(objpfx)check-abi-%.out, \
1450                                  $(install-lib.so-versioned))
1451 check-abi: $(check-abi-list)
1452 ifdef subdir
1453 subdir_check-abi: check-abi
1454 subdir_update-abi: update-abi
1455 subdir_update-all-abi: update-all-abi
1456 else
1457 check-abi: subdir_check-abi
1458         if grep -q '^FAIL:' $(objpfx)*/check-abi*.test-result; then \
1459                 cat $(objpfx)*/check-abi*.out && exit 1; fi
1460 update-abi: subdir_update-abi
1461 update-all-abi: subdir_update-all-abi
1462 endif
1463
1464 ifeq ($(subdir),elf)
1465 check-abi: $(objpfx)check-abi-libc.out
1466 tests-special += $(objpfx)check-abi-libc.out
1467 update-abi: update-abi-libc
1468 update-all-abi: update-all-abi-libc
1469 common-generated += libc.symlist
1470 endif
1471
1472 ifeq ($(build-shared),yes)
1473 ifdef subdir
1474 tests-special += $(check-abi-list)
1475 endif
1476 endif
1477
1478 endif
1479 \f
1480 # These will have been set by sysdeps/posix/Makefile.
1481 L_tmpnam  ?= 1
1482 TMP_MAX   ?= 0
1483 L_ctermid ?= 1
1484 L_cuserid ?= 1
1485
1486 stdio_lim = $(common-objpfx)bits/stdio_lim.h
1487
1488 $(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
1489 $(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
1490                    $(common-objpfx)config.make
1491         $(make-target-directory)
1492         { echo '#include "$(..)posix/bits/posix1_lim.h"';               \
1493         } |                                                             \
1494         $(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)'   \
1495               $(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
1496         sed $(sed-remove-objpfx) $(sed-remove-dotdot)                   \
1497             $(@:st=dT) > $(@:st=dt)
1498         mv -f $(@:st=dt) $(@:st=d)
1499         fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`;       \
1500         filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`;    \
1501         fopen_max=$${fopen_max:-16};                                    \
1502         filename_max=$${filename_max:-1024};                            \
1503         sed -e "s/@FOPEN_MAX@/$$fopen_max/"                             \
1504             -e "s/@FILENAME_MAX@/$$filename_max/"                       \
1505             -e "s/@L_tmpnam@/$(L_tmpnam)/"                              \
1506             -e "s/@TMP_MAX@/$(TMP_MAX)/"                                \
1507             -e "s/@L_ctermid@/$(L_ctermid)/"                            \
1508             -e "s/@L_cuserid@/$(L_cuserid)/"                            \
1509             $< > $(@:st=h.new)
1510         $(move-if-change) $(@:st=h.new) $(@:st=h)
1511 # Remove these last so that they can be examined if something went wrong.
1512         rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
1513         touch $@
1514 # Get dependencies.
1515 ifndef no_deps
1516 -include $(stdio_lim:h=d)
1517 endif
1518 common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st
1519 \f
1520 FORCE:
1521
1522 .PHONY: echo-headers
1523 echo-headers:
1524         @echo $(headers)
1525
1526 %.bz2: %; bzip2 -9vk $<
1527 %.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
1528 %.xz: %; xz -9evk $<
1529 \f
1530 # Common cleaning targets.
1531
1532 .PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
1533 clean: common-clean
1534 mostlyclean: common-mostlyclean
1535
1536 do-tests-clean:
1537         -rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) \
1538                                                       $(tests-internal) \
1539                                                       $(xtests) \
1540                                                       $(test-srcs)) \
1541                                      $(addsuffix .test-result,$(tests) \
1542                                                               $(tests-internal) \
1543                                                               $(xtests) \
1544                                                               $(test-srcs)))
1545
1546 # Remove the object files.
1547 common-mostlyclean:
1548         -rm -f $(addprefix $(objpfx),$(tests) $(tests-internal) $(xtests) \
1549                                      $(test-srcs) \
1550                                      $(others) $(sysdep-others) stubs \
1551                                      $(addsuffix .o,$(tests) \
1552                                                     $(tests-internal) \
1553                                                     $(xtests) \
1554                                                     $(test-srcs) \
1555                                                     $(others) \
1556                                                     $(sysdep-others)) \
1557                                      $(addsuffix .out,$(tests) \
1558                                                       $(tests-internal) \
1559                                                       $(xtests) \
1560                                                       $(test-srcs)) \
1561                                      $(addsuffix .test-result,$(tests) \
1562                                                               $(tests-internal) \
1563                                                               $(xtests) \
1564                                                               $(test-srcs)))
1565         -rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
1566                                      $(install-lib) $(install-lib.so) \
1567                                      $(install-lib.so:%.so=%_pic.a))
1568         -rm -f core
1569         -rm -f $(objpfx)rtld-*.os
1570         $(rmobjs)
1571 define rmobjs
1572 $(foreach o,$(object-suffixes-for-libc),
1573 -rm -f $(objpfx)stamp$o $(o-objects))
1574 endef
1575
1576 # Also remove the dependencies and generated source files.
1577 common-clean: common-mostlyclean
1578         -rm -f $(addprefix $(objpfx),$(generated))
1579         -rm -f $(objpfx)*.d $(objpfx)*.dt
1580         -rm -fr $(addprefix $(objpfx),$(generated-dirs))
1581         -rm -f $(addprefix $(common-objpfx),$(common-generated))
1582         -rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
1583 \f
1584 # Produce a file `stubs' which contains `#define __stub_FUNCTION'
1585 # for each function which is a stub.
1586
1587 ifdef objpfx
1588 .PHONY: stubs # The parent Makefile calls this target.
1589 stubs: $(objpfx)stubs
1590 endif
1591 objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
1592                   $(addprefix $(objpfx),$(extra-objs))
1593 $(objpfx)stubs: $(objs-for-stubs)
1594 ifneq (,$(strip $(objs-for-stubs)))
1595         (cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
1596         $(AWK) '/\.gnu\.glibc-stub\./ { \
1597                   sub(/\.gnu\.glibc-stub\./, "", $$2); \
1598                   stubs[$$2] = 1; } \
1599                 END { for (s in stubs) print "#define __stub_" s }' > $@T
1600         mv -f $@T $@
1601 else
1602         > $@
1603 endif
1604 \f
1605 ifneq (,$(strip $(gpl2lgpl)))
1606 ifneq (,$(wildcard $(..)gpl2lgpl.sed))
1607 # Snarf from the master source and frob the copying notice.
1608 $(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
1609         sed -f $^ > $@-tmp
1610 # So I don't edit them by mistake.
1611         chmod a-w $@-tmp
1612         mv -f $@-tmp $@
1613 endif
1614 endif
1615
1616 # Local Variables:
1617 # mode: makefile
1618 # End: