Makefile

   1 # Copyright (C) 1991-2020 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 # <https://www.gnu.org/licenses/>.
  17
  18 #
  19 #       Master Makefile for the GNU C library
  20 #
  21 ifneq (,)
  22 This makefile requires GNU Make.
  23 endif
  24
  25 include Makeconfig
  26
  27
  28 # This is the default target; it makes everything except the tests.
  29 .PHONY: all help minihelp
  30 all: minihelp lib others
  31
  32 help:
  33         @sed '0,/^help-starts-here$$/d' Makefile.help
  34
  35 minihelp:
  36         @echo
  37         @echo type \"make help\" for help with common glibc makefile targets
  38         @echo
  39
  40 \f
  41 ifneq ($(AUTOCONF),no)
  42
  43 define autoconf-it
  44 @-rm -f $@.new
  45 $(AUTOCONF) $(ACFLAGS) $< > $@.new
  46 chmod a-w$(patsubst %,$(comma)a+x,$(filter .,$(@D))) $@.new
  47 mv -f $@.new $@
  48 endef
  49
  50 configure: configure.ac aclocal.m4; $(autoconf-it)
  51 %/configure: %/configure.ac aclocal.m4; $(autoconf-it)
  52 %/preconfigure: %/preconfigure.ac aclocal.m4; $(autoconf-it)
  53
  54 endif # $(AUTOCONF) = no
  55
  56
  57 # We don't want to run anything here in parallel.
  58 .NOTPARALLEL:
  59
  60 # These are the targets that are made by making them in each subdirectory.
  61 +subdir_targets := subdir_lib objects objs others subdir_mostlyclean    \
  62                    subdir_clean subdir_distclean subdir_realclean       \
  63                    tests xtests                                         \
  64                    subdir_update-abi subdir_check-abi                   \
  65                    subdir_update-all-abi                                \
  66                    subdir_echo-headers                                  \
  67                    subdir_install                                       \
  68                    subdir_objs subdir_stubs subdir_testclean            \
  69                    $(addprefix install-, no-libc.a bin lib data headers others)
  70 \f
  71 headers := limits.h values.h features.h gnu-versions.h \
  72            bits/xopen_lim.h gnu/libc-version.h stdc-predef.h \
  73            bits/libc-header-start.h
  74
  75 echo-headers: subdir_echo-headers
  76
  77 # The headers are in the include directory.
  78 subdir-dirs = include
  79 vpath %.h $(subdir-dirs)
  80
  81 # What to install.
  82 install-others = $(inst_includedir)/gnu/stubs.h
  83 install-bin-script =
  84
  85 ifeq (yes,$(build-shared))
  86 headers += gnu/lib-names.h
  87 endif
  88
  89 include Makerules
  90
  91 ifeq ($(build-programs),yes)
  92 others: $(addprefix $(objpfx),$(install-bin-script))
  93 endif
  94
  95 # Install from subdirectories too.
  96 install: subdir_install
  97
  98 # Explicit dependency so that `make install-headers' works
  99 install-headers: install-headers-nosubdir
 100
 101 # Make sure that the dynamic linker is installed before libc.
 102 $(inst_slibdir)/libc-$(version).so: elf/ldso_install
 103
 104 .PHONY: elf/ldso_install
 105 elf/ldso_install:
 106         $(MAKE) -C $(@D) $(@F)
 107
 108 # Create links for shared libraries using the `ldconfig' program if possible.
 109 # Ignore the error if we cannot update /etc/ld.so.cache.
 110 ifeq (no,$(cross-compiling))
 111 ifeq (yes,$(build-shared))
 112 install: install-symbolic-link
 113 .PHONY: install-symbolic-link
 114 install-symbolic-link: subdir_install
 115         $(symbolic-link-prog) $(symbolic-link-list)
 116         rm -f $(symbolic-link-list)
 117
 118 install:
 119         -test ! -x $(elf-objpfx)ldconfig || LC_ALL=C \
 120           $(elf-objpfx)ldconfig $(addprefix -r ,$(install_root)) \
 121                                 $(slibdir) $(libdir)
 122 ifneq (no,$(PERL))
 123 ifeq (/usr,$(prefix))
 124 ifeq (,$(install_root))
 125         LD_SO=$(ld.so-version) CC="$(CC)" $(PERL) scripts/test-installation.pl $(common-objpfx)
 126 endif
 127 endif
 128 endif
 129 endif
 130 endif
 131
 132 # Build subdirectory lib objects.
 133 lib-noranlib: subdir_lib
 134
 135 ifeq (yes,$(build-shared))
 136 # Build the shared object from the PIC object library.
 137 lib: $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so
 138 endif # $(build-shared)
 139
 140 # Used to build testrun.sh.
 141 define testrun-script
 142 #!/bin/bash
 143 builddir=`dirname "$$0"`
 144 GCONV_PATH="$${builddir}/iconvdata"
 145
 146 usage () {
 147   echo "usage: $$0 [--tool=strace] PROGRAM [ARGUMENTS...]" 2>&1
 148   echo "       $$0 --tool=valgrind PROGRAM [ARGUMENTS...]" 2>&1
 149   exit 1
 150 }
 151
 152 toolname=default
 153 while test $$# -gt 0 ; do
 154   case "$$1" in
 155     --tool=*)
 156       toolname="$${1:7}"
 157       shift
 158       ;;
 159     --*)
 160       usage
 161       ;;
 162     *)
 163       break
 164       ;;
 165   esac
 166 done
 167
 168 if test $$# -eq 0 ; then
 169   usage
 170 fi
 171
 172 case "$$toolname" in
 173   default)
 174     exec $(subst $(common-objdir),"$${builddir}", $(test-program-prefix)) \
 175       $${1+"$$@"}
 176     ;;
 177   strace)
 178     exec strace $(patsubst %, -E%, $(run-program-env)) \
 179       $(test-via-rtld-prefix) $${1+"$$@"}
 180     ;;
 181   valgrind)
 182     exec env $(run-program-env) valgrind $(test-via-rtld-prefix) $${1+"$$@"}
 183     ;;
 184   container)
 185     exec env $(run-program-env) $(test-via-rtld-prefix) \
 186       $(common-objdir)/support/test-container \
 187       env $(run-program-env) $(test-via-rtld-prefix) $${1+"$$@"}
 188     ;;
 189   *)
 190     usage
 191     ;;
 192 esac
 193 endef
 194
 195 # This is a handy script for running any dynamically linked program against
 196 # the current libc build for testing.
 197 $(common-objpfx)testrun.sh: $(common-objpfx)config.make \
 198                             $(..)Makeconfig $(..)Makefile
 199         $(file >$@T,$(testrun-script))
 200         chmod a+x $@T
 201         mv -f $@T $@
 202 postclean-generated += testrun.sh
 203
 204 define debugglibc
 205 #!/bin/bash
 206
 207 SOURCE_DIR="$(CURDIR)"
 208 BUILD_DIR="$(common-objpfx)"
 209 CMD_FILE="$(common-objpfx)debugglibc.gdb"
 210 CONTAINER=false
 211 DIRECT=true
 212 STATIC=false
 213 SYMBOLSFILE=true
 214 unset TESTCASE
 215 unset BREAKPOINTS
 216 unset ENVVARS
 217
 218 usage()
 219 {
 220 cat << EOF
 221 Usage: $$0 [OPTIONS] <program>
 222
 223    Or: $$0 [OPTIONS] -- <program> [<args>]...
 224
 225   where <program> is the path to the program being tested,
 226   and <args> are the arguments to be passed to it.
 227
 228 Options:
 229
 230   -h, --help
 231         Prints this message and leaves.
 232
 233   The following options require one argument:
 234
 235   -b, --breakpoint
 236         Breakpoints to set at the beginning of the execution
 237         (each breakpoint demands its own -b option, e.g. -b foo -b bar)
 238   -e, --environment-variable
 239         Environment variables to be set with 'exec-wrapper env' in GDB
 240         (each environment variable demands its own -e option, e.g.
 241         -e FOO=foo -e BAR=bar)
 242
 243   The following options do not take arguments:
 244
 245   -c, --in-container
 246         Run the test case inside a container and automatically attach
 247         GDB to it.
 248   -i, --no-direct
 249         Selects whether to pass the --direct flag to the program.
 250         --direct is useful when debugging glibc test cases. It inhibits the
 251         tests from forking and executing in a subprocess.
 252         Default behaviour is to pass the --direct flag, except when the
 253         program is run with user specified arguments using the "--" separator.
 254   -s, --no-symbols-file
 255         Do not tell GDB to load debug symbols from the program.
 256 EOF
 257 }
 258
 259 # Parse input options
 260 while [[ $$# > 0 ]]
 261 do
 262   key="$$1"
 263   case $$key in
 264     -h|--help)
 265       usage
 266       exit 0
 267       ;;
 268     -b|--breakpoint)
 269       BREAKPOINTS="break $$2\n$$BREAKPOINTS"
 270       shift
 271       ;;
 272     -e|--environment-variable)
 273       ENVVARS="$$2 $$ENVVARS"
 274       shift
 275       ;;
 276     -c|--in-container)
 277       CONTAINER=true
 278       ;;
 279     -i|--no-direct)
 280       DIRECT=false
 281       ;;
 282     -s|--no-symbols-file)
 283       SYMBOLSFILE=false
 284       ;;
 285     --)
 286       shift
 287       TESTCASE=$$1
 288       COMMANDLINE="$$@"
 289       # Don't add --direct when user specifies program arguments
 290       DIRECT=false
 291       break
 292       ;;
 293     *)
 294       TESTCASE=$$1
 295       COMMANDLINE=$$TESTCASE
 296       ;;
 297   esac
 298   shift
 299 done
 300
 301 # Check for required argument and if the testcase exists
 302 if [ ! -v TESTCASE ] || [ ! -f $${TESTCASE} ]
 303 then
 304   usage
 305   exit 1
 306 fi
 307
 308 # Expand environment setup command
 309 if [ -v ENVVARS ]
 310 then
 311   ENVVARSCMD="set exec-wrapper env $$ENVVARS"
 312 fi
 313
 314 # Expand direct argument
 315 if [ "$$DIRECT" == true ]
 316 then
 317   DIRECT="--direct"
 318 else
 319   DIRECT=""
 320 fi
 321
 322 # Check if the test case is static
 323 if file $${TESTCASE} | grep "statically linked" >/dev/null
 324 then
 325   STATIC=true
 326 else
 327   STATIC=false
 328 fi
 329
 330 # Expand symbols loading command
 331 if [ "$$SYMBOLSFILE" == true ]
 332 then
 333   SYMBOLSFILE="add-symbol-file $${TESTCASE}"
 334 else
 335   SYMBOLSFILE=""
 336 fi
 337
 338 # GDB commands template
 339 template ()
 340 {
 341 cat <<EOF
 342 set environment C -E -x c-header
 343 set auto-load safe-path $${BUILD_DIR}/nptl_db:\$$debugdir:\$$datadir/auto-load
 344 set libthread-db-search-path $${BUILD_DIR}/nptl_db
 345 __ENVVARS__
 346 __SYMBOLSFILE__
 347 break _dl_start_user
 348 run --library-path $(rpath-link):$${BUILD_DIR}/nptl_db \
 349 __COMMANDLINE__ __DIRECT__
 350 __BREAKPOINTS__
 351 EOF
 352 }
 353
 354 # Generate the commands file for gdb initialization
 355 template | sed \
 356   -e "s|__ENVVARS__|$$ENVVARSCMD|" \
 357   -e "s|__SYMBOLSFILE__|$$SYMBOLSFILE|" \
 358   -e "s|__COMMANDLINE__|$$COMMANDLINE|" \
 359   -e "s|__DIRECT__|$$DIRECT|" \
 360   -e "s|__BREAKPOINTS__|$$BREAKPOINTS|" \
 361   > $$CMD_FILE
 362
 363 echo
 364 echo "Debugging glibc..."
 365 echo "Build directory  : $$BUILD_DIR"
 366 echo "Source directory : $$SOURCE_DIR"
 367 echo "GLIBC Testcase   : $$TESTCASE"
 368 echo "GDB Commands     : $$CMD_FILE"
 369 echo "Env vars         : $$ENVVARS"
 370 echo
 371
 372 if [ "$$CONTAINER" == true ]
 373 then
 374 # Use testrun.sh to start the test case with WAIT_FOR_DEBUGGER=1, then
 375 # automatically attach GDB to it.
 376 WAIT_FOR_DEBUGGER=1 $(common-objpfx)testrun.sh --tool=container $${TESTCASE} &
 377 gdb -x $${TESTCASE}.gdb
 378 elif [ "$$STATIC" == true ]
 379 then
 380 gdb $${TESTCASE}
 381 else
 382 # Start the test case debugging in two steps:
 383 #   1. the following command invokes gdb to run the loader;
 384 #   2. the commands file tells the loader to run the test case.
 385 gdb -q \
 386   -x $${CMD_FILE} \
 387   -d $${SOURCE_DIR} \
 388   $${BUILD_DIR}/elf/ld.so
 389 fi
 390 endef
 391
 392 # This is another handy script for debugging dynamically linked program
 393 # against the current libc build for testing.
 394 $(common-objpfx)debugglibc.sh: $(common-objpfx)config.make \
 395                             $(..)Makeconfig $(..)Makefile
 396         $(file >$@T,$(debugglibc))
 397         chmod a+x $@T
 398         mv -f $@T $@
 399 postclean-generated += debugglibc.sh debugglibc.gdb
 400
 401 others: $(common-objpfx)testrun.sh $(common-objpfx)debugglibc.sh
 402 \f
 403 # Makerules creates a file `stubs' in each subdirectory, which
 404 # contains `#define __stub_FUNCTION' for each function defined in that
 405 # directory which is a stub.
 406 # Here we paste all of these together into <gnu/stubs.h>.
 407
 408 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)$(dir)/stubs)
 409
 410 ifndef abi-variants
 411 installed-stubs = $(inst_includedir)/gnu/stubs.h
 412 else
 413 installed-stubs = $(inst_includedir)/gnu/stubs-$(default-abi).h
 414
 415 $(inst_includedir)/gnu/stubs.h: $(+force)
 416         $(make-target-directory)
 417         { \
 418          echo '/* This file is automatically generated.';\
 419          echo "   This file selects the right generated file of \`__stub_FUNCTION' macros";\
 420          echo '   based on the architecture being compiled for.  */'; \
 421          echo ''; \
 422          $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 423          echo ''; \
 424          $(foreach v,$(abi-variants),\
 425          $(if $(abi-$(v)-condition),\
 426          echo '#if $(abi-$(v)-condition)'; \
 427          echo '# include <gnu/stubs-$(v).h>'); \
 428          $(if $(abi-$(v)-condition),echo '#endif';) \
 429          rm -f $(@:.d=.h).new$(v); \
 430          ) \
 431         } > $(@:.d=.h).new
 432         mv -f $(@:.d=.h).new $(@:.d=.h)
 433
 434 install-others-nosubdir: $(installed-stubs)
 435 endif
 436
 437
 438 # Since stubs.h is never needed when building the library, we simplify the
 439 # hairy installation process by producing it in place only as the last part
 440 # of the top-level `make install'.  It depends on subdir_install, which
 441 # iterates over all the subdirs; subdir_install in each subdir depends on
 442 # the subdir's stubs file.  Having more direct dependencies would result in
 443 # extra iterations over the list for subdirs and many recursive makes.
 444 $(installed-stubs): include/stubs-prologue.h subdir_install
 445         $(make-target-directory)
 446         @rm -f $(objpfx)stubs.h
 447         (sed '/^@/d' $<; LC_ALL=C sort $(subdir-stubs)) > $(objpfx)stubs.h
 448         if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
 449         then echo 'stubs.h unchanged'; \
 450         else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
 451         rm -f $(objpfx)stubs.h
 452 \f
 453 # This makes the Info or DVI file of the documentation from the Texinfo source.
 454 .PHONY: info dvi pdf html
 455 info dvi pdf html:
 456         $(MAKE) $(PARALLELMFLAGS) -C manual $@
 457 \f
 458 # This makes all the subdirectory targets.
 459
 460 # For each target, make it depend on DIR/target for each subdirectory DIR.
 461 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 462
 463 # Compute a list of all those targets.
 464 all-subdirs-targets := $(foreach dir,$(subdirs),\
 465                                  $(addprefix $(dir)/,$(+subdir_targets)))
 466
 467 # The action for each of those is to cd into the directory and make the
 468 # target there.
 469 $(all-subdirs-targets):
 470         $(MAKE) $(PARALLELMFLAGS) $(subdir-target-args) $(@F)
 471
 472 define subdir-target-args
 473 subdir=$(@D)$(if $($(@D)-srcdir),\
 474 -C $($(@D)-srcdir) ..=`pwd`/,\
 475 -C $(@D) ..=../)
 476 endef
 477
 478 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 479 \f
 480 # Targets to clean things up to various degrees.
 481
 482 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean \
 483         tests-clean
 484
 485 # Subroutines of all cleaning targets.
 486 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 487         -rm -f $(foreach o,$(object-suffixes-for-libc),\
 488                    $(common-objpfx)$(patsubst %,$(libtype$o),c)) \
 489                $(addprefix $(objpfx),$(install-lib))
 490 parent-clean: parent-mostlyclean common-clean
 491
 492 postclean = $(addprefix $(common-objpfx),$(postclean-generated)) \
 493             $(addprefix $(objpfx),sysd-dirs sysd-rules) \
 494             $(addprefix $(objpfx),sysd-sorted soversions.mk soversions.i)
 495
 496 clean: parent-clean
 497 # This is done this way rather than having `subdir_clean' be a
 498 # dependency of this target so that libc.a will be removed before the
 499 # subdirectories are dealt with and so they won't try to remove object
 500 # files from it when it's going to be removed anyway.
 501         @$(MAKE) subdir_clean no_deps=t
 502         -rm -f $(postclean)
 503 mostlyclean: parent-mostlyclean
 504         @$(MAKE) subdir_mostlyclean no_deps=t
 505         -rm -f $(postclean)
 506
 507 tests-clean:
 508         @$(MAKE) subdir_testclean no_deps=t
 509
 510 ifneq (,$(CXX))
 511 vpath c++-types.data $(+sysdep_dirs)
 512
 513 tests-special += $(objpfx)c++-types-check.out
 514 $(objpfx)c++-types-check.out: c++-types.data scripts/check-c++-types.sh
 515         scripts/check-c++-types.sh $< $(CXX) $(filter-out -std=gnu11 $(+gccwarn-c),$(CFLAGS)) $(CPPFLAGS) > $@; \
 516         $(evaluate-test)
 517 endif
 518
 519 tests-special += $(objpfx)check-local-headers.out
 520 $(objpfx)check-local-headers.out: scripts/check-local-headers.sh
 521         AWK='$(AWK)' scripts/check-local-headers.sh \
 522           "$(includedir)" "$(objpfx)" < /dev/null > $@; \
 523         $(evaluate-test)
 524
 525 ifneq "$(headers)" ""
 526 # Special test of all the installed headers in this directory.
 527 tests-special += $(objpfx)check-installed-headers-c.out
 528 libof-check-installed-headers-c := testsuite
 529 $(objpfx)check-installed-headers-c.out: \
 530     scripts/check-installed-headers.sh $(headers)
 531         $(SHELL) $(..)scripts/check-installed-headers.sh c \
 532           "$(CC) $(filter-out -std=%,$(CFLAGS)) -D_ISOMAC $(+includes)" \
 533           $(headers) > $@; \
 534         $(evaluate-test)
 535
 536 ifneq "$(CXX)" ""
 537 tests-special += $(objpfx)check-installed-headers-cxx.out
 538 libof-check-installed-headers-cxx := testsuite
 539 $(objpfx)check-installed-headers-cxx.out: \
 540     scripts/check-installed-headers.sh $(headers)
 541         $(SHELL) $(..)scripts/check-installed-headers.sh c++ \
 542           "$(CXX) $(filter-out -std=%,$(CXXFLAGS)) -D_ISOMAC $(+includes)" \
 543           $(headers) > $@; \
 544         $(evaluate-test)
 545 endif # $(CXX)
 546
 547 tests-special += $(objpfx)check-wrapper-headers.out
 548 $(objpfx)check-wrapper-headers.out: scripts/check-wrapper-headers.py $(headers)
 549         $(PYTHON) $< --root=. --subdir=. $(headers) \
 550           --generated $(common-generated) > $@; $(evaluate-test)
 551 endif # $(headers)
 552
 553 define summarize-tests
 554 @egrep -v '^(PASS|XFAIL):' $(objpfx)$1 || true
 555 @echo "Summary of test results$2:"
 556 @sed 's/:.*//' < $(objpfx)$1 | sort | uniq -c
 557 @! egrep -q -v '^(X?PASS|XFAIL|UNSUPPORTED):' $(objpfx)$1
 558 endef
 559
 560 # The intention here is to do ONE install of our build into the
 561 # testroot.pristine/ directory, then rsync (internal to
 562 # support/test-container) that to testroot.root/ at the start of each
 563 # test.  That way we can promise each test a "clean" install, without
 564 # having to do the install for each test.
 565 #
 566 # In addition, we have to copy some files (which we build) into this
 567 # root in addition to what glibc installs.  For example, many tests
 568 # require additional programs including /bin/sh, /bin/true, and
 569 # /bin/echo, all of which we build below to limit library dependencies
 570 # to just those things in glibc and language support libraries which
 571 # we also copy into the into the rootfs.  To determine what language
 572 # support libraries we need we build a "test" program in either C or
 573 # (if available) C++ just so we can copy in any shared objects
 574 # (which we do not build) that GCC-compiled programs depend on.
 575
 576
 577 ifeq (,$(CXX))
 578 LINKS_DSO_PROGRAM = links-dso-program-c
 579 else
 580 LINKS_DSO_PROGRAM = links-dso-program
 581 endif
 582
 583 $(tests-container) $(addsuffix /tests,$(subdirs)) : \
 584                 $(objpfx)testroot.pristine/install.stamp
 585 $(objpfx)testroot.pristine/install.stamp :
 586         test -d $(objpfx)testroot.pristine || \
 587           mkdir $(objpfx)testroot.pristine
 588         # We need a working /bin/sh for some of the tests.
 589         test -d $(objpfx)testroot.pristine/bin || \
 590           mkdir $(objpfx)testroot.pristine/bin
 591         # We need the compiled locale dir for localedef tests.
 592         test -d $(objpfx)testroot.pristine/$(complocaledir) || \
 593           mkdir -p $(objpfx)testroot.pristine/$(complocaledir)
 594         cp $(objpfx)support/shell-container $(objpfx)testroot.pristine/bin/sh
 595         cp $(objpfx)support/echo-container $(objpfx)testroot.pristine/bin/echo
 596         cp $(objpfx)support/true-container $(objpfx)testroot.pristine/bin/true
 597 ifeq ($(run-built-tests),yes)
 598         # Copy these DSOs first so we can overwrite them with our own.
 599         for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1  \
 600                 $(rtld-prefix) \
 601                 $(objpfx)testroot.pristine/bin/sh \
 602                 | sed -n '/\//{s@.*=> /@/@;s/^[^/]*//;s/ .*//p;}'` ;\
 603           do \
 604             test -d `dirname $(objpfx)testroot.pristine$$dso` || \
 605               mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
 606             $(test-wrapper) cp $$dso $(objpfx)testroot.pristine$$dso ;\
 607           done
 608         for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1  \
 609                 $(rtld-prefix) \
 610                 $(objpfx)support/$(LINKS_DSO_PROGRAM) \
 611                 | sed -n '/\//{s@.*=> /@/@;s/^[^/]*//;s/ .*//p;}'` ;\
 612           do \
 613             test -d `dirname $(objpfx)testroot.pristine$$dso` || \
 614               mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
 615             $(test-wrapper) cp $$dso $(objpfx)testroot.pristine$$dso ;\
 616           done
 617 endif
 618         # $(symbolic-link-list) is a file that encodes $(DESTDIR) so we
 619         # have to purge it
 620         rm -f $(symbolic-link-list)
 621         # Setting INSTALL_UNCOMPRESSED causes localedata/Makefile to
 622         # install the charmaps uncompressed, as the testroot does not
 623         # provide a gunzip program.
 624         $(MAKE) install DESTDIR=$(objpfx)testroot.pristine \
 625           INSTALL_UNCOMPRESSED=yes subdirs='$(sorted-subdirs)'
 626         rm -f $(symbolic-link-list)
 627         touch $(objpfx)testroot.pristine/install.stamp
 628
 629 tests-special-notdir = $(patsubst $(objpfx)%, %, $(tests-special))
 630 tests: $(tests-special)
 631         $(..)scripts/merge-test-results.sh -s $(objpfx) "" \
 632           $(sort $(tests-special-notdir:.out=)) \
 633           > $(objpfx)subdir-tests.sum
 634         $(..)scripts/merge-test-results.sh -t $(objpfx) subdir-tests.sum \
 635           $(sort $(subdirs) .) \
 636           > $(objpfx)tests.sum
 637         $(call summarize-tests,tests.sum)
 638 xtests:
 639         $(..)scripts/merge-test-results.sh -t $(objpfx) subdir-xtests.sum \
 640           $(sort $(subdirs)) \
 641           > $(objpfx)xtests.sum
 642         $(call summarize-tests,xtests.sum, for extra tests)
 643
 644 # The realclean target is just like distclean for the parent, but we want
 645 # the subdirs to know the difference in case they care.
 646 realclean distclean: parent-clean
 647 # This is done this way rather than having `subdir_distclean' be a
 648 # dependency of this target so that libc.a will be removed before the
 649 # subdirectories are dealt with and so they won't try to remove object
 650 # files from it when it's going to be removed anyway.
 651         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes \
 652                  sysdep-subdirs="$(sysdep-subdirs)"
 653         -rm -f $(postclean)
 654
 655 # Subroutine of distclean and realclean.
 656 distclean-1: subdir_$(distclean-1)
 657         -rm -f $(config-generated)
 658         -rm -f $(addprefix $(objpfx),config.status config.cache config.log)
 659         -rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
 660 ifdef objdir
 661         -rm -f $(objpfx)Makefile
 662 endif
 663         -rm -f $(sysdep-$(distclean-1))
 664 \f
 665 # Make the TAGS file for Emacs users.
 666
 667 .PHONY: TAGS
 668 TAGS:
 669         scripts/list-sources.sh | sed -n -e '/Makefile/p' \
 670           $(foreach S,[chsSyl] cxx sh bash pl,\
 671                     $(subst .,\.,-e '/.$S\(.in\)*$$/p')) \
 672         | $(ETAGS) -o $@ -
 673 \f
 674 # Make the distribution tarfile.
 675 .PHONY: dist dist-prepare
 676
 677 generated := $(generated) stubs.h
 678
 679 files-for-dist := README INSTALL configure NEWS
 680
 681 # Regenerate stuff, then error if these things are not committed yet.
 682 dist-prepare: $(files-for-dist)
 683         conf=`find sysdeps -name configure`; \
 684         $(MAKE) $$conf && \
 685         git diff --stat HEAD -- $^ $$conf \
 686         | $(AWK) '{ print; rc=1 } END { exit rc }'
 687
 688 %.tar: FORCE
 689         git archive --prefix=$*/ $* > $@.new
 690         mv -f $@.new $@
 691
 692 # Do `make dist dist-version=X.Y.Z' to make tar files of an older version.
 693
 694 ifneq (,$(strip $(dist-version)))
 695 dist: $(foreach Z,.bz2 .gz .xz,$(dist-version).tar$Z)
 696         md5sum $^
 697 else
 698 dist: dist-prepare
 699         @if v=`git describe`; then \
 700           echo Distribution version $$v; \
 701           $(MAKE) dist dist-version=$$v; \
 702         else \
 703           false; \
 704         fi
 705 endif
 706
 707 INSTALL: manual/install-plain.texi manual/macros.texi \
 708          $(common-objpfx)manual/pkgvers.texi manual/install.texi
 709         makeinfo --no-validate --plaintext --no-number-sections \
 710                  -I$(common-objpfx)manual $< -o $@-tmp
 711         $(AWK) 'NF == 0 { ++n; next } \
 712                 NF != 0 { while (n-- > 0) print ""; n = 0; print }' \
 713           < $@-tmp > $@-tmp2
 714         rm -f $@-tmp
 715         -chmod a-w $@-tmp2
 716         mv -f $@-tmp2 $@
 717 $(common-objpfx)manual/%: FORCE
 718         $(MAKE) $(PARALLELMFLAGS) -C manual $@
 719 FORCE:
 720
 721 iconvdata/% localedata/% po/%: FORCE
 722         $(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)
 723
 724 # Convenience target to rerun one test, from the top of the build tree
 725 # Example: make test t=wcsmbs/test-wcsnlen
 726 .PHONY: test
 727 test :
 728         @-rm -f $(objpfx)$t.out
 729         $(MAKE) subdir=$(patsubst %/,%,$(dir $t)) -C $(dir $t) ..=../ $(objpfx)$t.out
 730         @cat $(objpfx)$t.test-result
 731         @cat $(objpfx)$t.out