bootstrap

   1 #! /bin/sh
   2 # Print a version string.
   3 scriptversion=2020-04-13.15; # UTC
   4
   5 # Bootstrap this package from checked-out sources.
   6
   7 # Copyright (C) 2003-2020 Free Software Foundation, Inc.
   8
   9 # This program is free software: you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation, either version 3 of the License, or
  12 # (at your option) any later version.
  13
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  21
  22 # Originally written by Paul Eggert.  The canonical version of this
  23 # script is maintained as build-aux/bootstrap in gnulib, however, to
  24 # be useful to your project, you should place a copy of it under
  25 # version control in the top-level directory of your project.  The
  26 # intent is that all customization can be done with a bootstrap.conf
  27 # file also maintained in your version control; gnulib comes with a
  28 # template build-aux/bootstrap.conf to get you started.
  29
  30 # Please report bugs or propose patches to bug-gnulib@gnu.org.
  31
  32 nl='
  33 '
  34
  35 # Ensure file names are sorted consistently across platforms.
  36 LC_ALL=C
  37 export LC_ALL
  38
  39 # Ensure that CDPATH is not set.  Otherwise, the output from cd
  40 # would cause trouble in at least one use below.
  41 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
  42
  43 local_gl_dir=gl
  44
  45 # Honor $PERL, but work even if there is none.
  46 PERL="${PERL-perl}"
  47
  48 me=$0
  49
  50 default_gnulib_url=git://git.sv.gnu.org/gnulib
  51
  52 usage() {
  53   cat <<EOF
  54 Usage: $me [OPTION]...
  55 Bootstrap this package from the checked-out sources.
  56
  57 Options:
  58  --gnulib-srcdir=DIRNAME  specify the local directory where gnulib
  59                           sources reside.  Use this if you already
  60                           have gnulib sources on your machine, and
  61                           do not want to waste your bandwidth downloading
  62                           them again.  Defaults to \$GNULIB_SRCDIR
  63  --bootstrap-sync         if this bootstrap script is not identical to
  64                           the version in the local gnulib sources,
  65                           update this script, and then restart it with
  66                           /bin/sh or the shell \$CONFIG_SHELL
  67  --no-bootstrap-sync      do not check whether bootstrap is out of sync
  68  --copy                   copy files instead of creating symbolic links
  69  --force                  attempt to bootstrap even if the sources seem
  70                           not to have been checked out
  71  --no-git                 do not use git to update gnulib.  Requires that
  72                           --gnulib-srcdir point to a correct gnulib snapshot
  73  --skip-po                do not download po files
  74
  75 If the file $me.conf exists in the same directory as this script, its
  76 contents are read as shell variables to configure the bootstrap.
  77
  78 For build prerequisites, environment variables like \$AUTOCONF and \$AMTAR
  79 are honored.
  80
  81 Gnulib sources can be fetched in various ways:
  82
  83  * If this package is in a git repository with a 'gnulib' submodule
  84    configured, then that submodule is initialized and updated and sources
  85    are fetched from there.  If \$GNULIB_SRCDIR is set (directly or via
  86    --gnulib-srcdir) and is a git repository, then it is used as a reference.
  87
  88  * Otherwise, if \$GNULIB_SRCDIR is set (directly or via --gnulib-srcdir),
  89    then sources are fetched from that local directory.  If it is a git
  90    repository and \$GNULIB_REVISION is set, then that revision is checked
  91    out.
  92
  93  * Otherwise, if this package is in a git repository with a 'gnulib'
  94    submodule configured, then that submodule is initialized and updated and
  95    sources are fetched from there.
  96
  97  * Otherwise, if the 'gnulib' directory does not exist, Gnulib sources are
  98    cloned into that directory using git from \$GNULIB_URL, defaulting to
  99    $default_gnulib_url.
 100    If \$GNULIB_REVISION is set, then that revision is checked out.
 101
 102  * Otherwise, the existing Gnulib sources in the 'gnulib' directory are
 103    used.  If it is a git repository and \$GNULIB_REVISION is set, then that
 104    revision is checked out.
 105
 106 If you maintain a package and want to pin a particular revision of the
 107 Gnulib sources that has been tested with your package, then there are two
 108 possible approaches: either configure a 'gnulib' submodule with the
 109 appropriate revision, or set \$GNULIB_REVISION (and if necessary
 110 \$GNULIB_URL) in $me.conf.
 111
 112 Running without arguments will suffice in most cases.
 113 EOF
 114 }
 115
 116 # warnf_ FORMAT-STRING ARG1...
 117 warnf_ ()
 118 {
 119   warnf_format_=$1
 120   shift
 121   nl='
 122 '
 123   case $* in
 124     *$nl*) me_=$(printf "$me"|tr "$nl|" '??')
 125        printf "$warnf_format_" "$@" | sed "s|^|$me_: |" ;;
 126     *) printf "$me: $warnf_format_" "$@" ;;
 127   esac >&2
 128 }
 129
 130 # warn_ WORD1...
 131 warn_ ()
 132 {
 133   # If IFS does not start with ' ', set it and emit the warning in a subshell.
 134   case $IFS in
 135     ' '*) warnf_ '%s\n' "$*";;
 136     *)    (IFS=' '; warn_ "$@");;
 137   esac
 138 }
 139
 140 # die WORD1...
 141 die() { warn_ "$@"; exit 1; }
 142
 143 # Configuration.
 144
 145 # Name of the Makefile.am
 146 gnulib_mk=gnulib.mk
 147
 148 # List of gnulib modules needed.
 149 gnulib_modules=
 150
 151 # Any gnulib files needed that are not in modules.
 152 gnulib_files=
 153
 154 : ${AUTOPOINT=autopoint}
 155 : ${AUTORECONF=autoreconf}
 156
 157 # A function to be called right after gnulib-tool is run.
 158 # Override it via your own definition in bootstrap.conf.
 159 bootstrap_post_import_hook() { :; }
 160
 161 # A function to be called after everything else in this script.
 162 # Override it via your own definition in bootstrap.conf.
 163 bootstrap_epilogue() { :; }
 164
 165 # The command to download all .po files for a specified domain into a
 166 # specified directory.  Fill in the first %s with the destination
 167 # directory and the second with the domain name.
 168 po_download_command_format=\
 169 "wget --mirror --level=1 -nd -nv -A.po -P '%s' \
 170  https://translationproject.org/latest/%s/"
 171
 172 # Prefer a non-empty tarname (4th argument of AC_INIT if given), else
 173 # fall back to the package name (1st argument with munging)
 174 extract_package_name='
 175   /^AC_INIT(\[*/{
 176      s///
 177      /^[^,]*,[^,]*,[^,]*,[ []*\([^][ ,)]\)/{
 178        s//\1/
 179        s/[],)].*//
 180        p
 181        q
 182      }
 183      s/[],)].*//
 184      s/^GNU //
 185      y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
 186      s/[^abcdefghijklmnopqrstuvwxyz0123456789_]/-/g
 187      p
 188   }
 189 '
 190 package=$(sed -n "$extract_package_name" configure.ac) \
 191   || die 'cannot find package name in configure.ac'
 192 gnulib_name=lib$package
 193
 194 build_aux=build-aux
 195 source_base=lib
 196 m4_base=m4
 197 doc_base=doc
 198 tests_base=tests
 199 gnulib_extra_files="
 200         build-aux/install-sh
 201         build-aux/mdate-sh
 202         build-aux/texinfo.tex
 203         build-aux/depcomp
 204         build-aux/config.guess
 205         build-aux/config.sub
 206         doc/INSTALL
 207 "
 208
 209 # Additional gnulib-tool options to use.  Use "\newline" to break lines.
 210 gnulib_tool_option_extras=
 211
 212 # Other locale categories that need message catalogs.
 213 EXTRA_LOCALE_CATEGORIES=
 214
 215 # Additional xgettext options to use.  Use "\\\newline" to break lines.
 216 XGETTEXT_OPTIONS='\\\
 217  --flag=_:1:pass-c-format\\\
 218  --flag=N_:1:pass-c-format\\\
 219  --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 220 '
 221
 222 # Package bug report address and copyright holder for gettext files
 223 COPYRIGHT_HOLDER='Free Software Foundation, Inc.'
 224 MSGID_BUGS_ADDRESS=bug-$package@gnu.org
 225
 226 # Files we don't want to import.
 227 excluded_files=
 228
 229 # File that should exist in the top directory of a checked out hierarchy,
 230 # but not in a distribution tarball.
 231 checkout_only_file=README-hacking
 232
 233 # Whether to use copies instead of symlinks.
 234 copy=false
 235
 236 # Set this to '.cvsignore .gitignore' in bootstrap.conf if you want
 237 # those files to be generated in directories like lib/, m4/, and po/.
 238 # Or set it to 'auto' to make this script select which to use based
 239 # on which version control system (if any) is used in the source directory.
 240 vc_ignore=auto
 241
 242 # Set this to true in bootstrap.conf to enable --bootstrap-sync by
 243 # default.
 244 bootstrap_sync=false
 245
 246 # Use git to update gnulib sources
 247 use_git=true
 248
 249 check_exists() {
 250   if test "$1" = "--verbose"; then
 251     ($2 --version </dev/null) >/dev/null 2>&1
 252     if test $? -ge 126; then
 253       # If not found, run with diagnostics as one may be
 254       # presented with env variables to set to find the right version
 255       ($2 --version </dev/null)
 256     fi
 257   else
 258     ($1 --version </dev/null) >/dev/null 2>&1
 259   fi
 260
 261   test $? -lt 126
 262 }
 263
 264 # find_tool ENVVAR NAMES...
 265 # -------------------------
 266 # Search for a required program.  Use the value of ENVVAR, if set,
 267 # otherwise find the first of the NAMES that can be run.
 268 # If found, set ENVVAR to the program name, die otherwise.
 269 #
 270 # FIXME: code duplication, see also gnu-web-doc-update.
 271 find_tool ()
 272 {
 273   find_tool_envvar=$1
 274   shift
 275   find_tool_names=$@
 276   eval "find_tool_res=\$$find_tool_envvar"
 277   if test x"$find_tool_res" = x; then
 278     for i; do
 279       if check_exists $i; then
 280         find_tool_res=$i
 281         break
 282       fi
 283     done
 284   fi
 285   if test x"$find_tool_res" = x; then
 286     warn_ "one of these is required: $find_tool_names;"
 287     die   "alternatively set $find_tool_envvar to a compatible tool"
 288   fi
 289   eval "$find_tool_envvar=\$find_tool_res"
 290   eval "export $find_tool_envvar"
 291 }
 292
 293 # Override the default configuration, if necessary.
 294 # Make sure that bootstrap.conf is sourced from the current directory
 295 # if we were invoked as "sh bootstrap".
 296 case "$0" in
 297   */*) test -r "$0.conf" && . "$0.conf" ;;
 298   *) test -r "$0.conf" && . ./"$0.conf" ;;
 299 esac
 300
 301 if test "$vc_ignore" = auto; then
 302   vc_ignore=
 303   test -d .git && vc_ignore=.gitignore
 304   test -d CVS && vc_ignore="$vc_ignore .cvsignore"
 305 fi
 306
 307 if test x"$gnulib_modules$gnulib_files$gnulib_extra_files" = x; then
 308   use_gnulib=false
 309 else
 310   use_gnulib=true
 311 fi
 312
 313 # Translate configuration into internal form.
 314
 315 # Parse options.
 316
 317 for option
 318 do
 319   case $option in
 320   --help)
 321     usage
 322     exit;;
 323   --gnulib-srcdir=*)
 324     GNULIB_SRCDIR=${option#--gnulib-srcdir=};;
 325   --skip-po)
 326     SKIP_PO=t;;
 327   --force)
 328     checkout_only_file=;;
 329   --copy)
 330     copy=true;;
 331   --bootstrap-sync)
 332     bootstrap_sync=true;;
 333   --no-bootstrap-sync)
 334     bootstrap_sync=false;;
 335   --no-git)
 336     use_git=false;;
 337   *)
 338     die "$option: unknown option";;
 339   esac
 340 done
 341
 342 $use_git || test -d "$GNULIB_SRCDIR" \
 343   || die "Error: --no-git requires --gnulib-srcdir"
 344
 345 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
 346   die "Bootstrapping from a non-checked-out distribution is risky."
 347 fi
 348
 349 # Strip blank and comment lines to leave significant entries.
 350 gitignore_entries() {
 351   sed '/^#/d; /^$/d' "$@"
 352 }
 353
 354 # If $STR is not already on a line by itself in $FILE, insert it at the start.
 355 # Entries are inserted at the start of the ignore list to ensure existing
 356 # entries starting with ! are not overridden.  Such entries support
 357 # whitelisting exceptions after a more generic blacklist pattern.
 358 insert_if_absent() {
 359   file=$1
 360   str=$2
 361   test -f $file || touch $file
 362   test -r $file || die "Error: failed to read ignore file: $file"
 363   duplicate_entries=$(gitignore_entries $file | sort | uniq -d)
 364   if [ "$duplicate_entries" ] ; then
 365     die "Error: Duplicate entries in $file: " $duplicate_entries
 366   fi
 367   linesold=$(gitignore_entries $file | wc -l)
 368   linesnew=$( { echo "$str"; cat $file; } | gitignore_entries | sort -u | wc -l)
 369   if [ $linesold != $linesnew ] ; then
 370     { echo "$str" | cat - $file > $file.bak && mv $file.bak $file; } \
 371       || die "insert_if_absent $file $str: failed"
 372   fi
 373 }
 374
 375 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
 376 # insert_if_absent.
 377 insert_vc_ignore() {
 378   vc_ignore_file="$1"
 379   pattern="$2"
 380   case $vc_ignore_file in
 381   *.gitignore)
 382     # A .gitignore entry that does not start with '/' applies
 383     # recursively to subdirectories, so prepend '/' to every
 384     # .gitignore entry.
 385     pattern=$(echo "$pattern" | sed s,^,/,);;
 386   esac
 387   insert_if_absent "$vc_ignore_file" "$pattern"
 388 }
 389
 390 # Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
 391 found_aux_dir=no
 392 grep '^[         ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
 393     >/dev/null && found_aux_dir=yes
 394 grep '^[         ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
 395     >/dev/null && found_aux_dir=yes
 396 test $found_aux_dir = yes \
 397   || die "configure.ac lacks 'AC_CONFIG_AUX_DIR([$build_aux])'; add it"
 398
 399 # If $build_aux doesn't exist, create it now, otherwise some bits
 400 # below will malfunction.  If creating it, also mark it as ignored.
 401 if test ! -d $build_aux; then
 402   mkdir $build_aux
 403   for dot_ig in x $vc_ignore; do
 404     test $dot_ig = x && continue
 405     insert_vc_ignore $dot_ig $build_aux
 406   done
 407 fi
 408
 409 # Note this deviates from the version comparison in automake
 410 # in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a
 411 # but this should suffice as we won't be specifying old
 412 # version formats or redundant trailing .0 in bootstrap.conf.
 413 # If we did want full compatibility then we should probably
 414 # use m4_version_compare from autoconf.
 415 sort_ver() { # sort -V is not generally available
 416   ver1="$1"
 417   ver2="$2"
 418
 419   # split on '.' and compare each component
 420   i=1
 421   while : ; do
 422     p1=$(echo "$ver1" | cut -d. -f$i)
 423     p2=$(echo "$ver2" | cut -d. -f$i)
 424     if [ ! "$p1" ]; then
 425       echo "$1 $2"
 426       break
 427     elif [ ! "$p2" ]; then
 428       echo "$2 $1"
 429       break
 430     elif [ ! "$p1" = "$p2" ]; then
 431       if [ "$p1" -gt "$p2" ] 2>/dev/null; then # numeric comparison
 432         echo "$2 $1"
 433       elif [ "$p2" -gt "$p1" ] 2>/dev/null; then # numeric comparison
 434         echo "$1 $2"
 435       else # numeric, then lexicographic comparison
 436         lp=$(printf "$p1\n$p2\n" | LANG=C sort -n | tail -n1)
 437         if [ "$lp" = "$p2" ]; then
 438           echo "$1 $2"
 439         else
 440           echo "$2 $1"
 441         fi
 442       fi
 443       break
 444     fi
 445     i=$(($i+1))
 446   done
 447 }
 448
 449 get_version_sed='
 450 # Move version to start of line.
 451 s/.*[v ]\([0-9]\)/\1/
 452
 453 # Skip lines that do not start with version.
 454 /^[0-9]/!d
 455
 456 # Remove characters after the version.
 457 s/[^.a-z0-9-].*//
 458
 459 # The first component must be digits only.
 460 s/^\([0-9]*\)[a-z-].*/\1/
 461
 462 #the following essentially does s/5.005/5.5/
 463 s/\.0*\([1-9]\)/.\1/g
 464 p
 465 q'
 466
 467 get_version() {
 468   app=$1
 469
 470   $app --version >/dev/null 2>&1 || { $app --version; return 1; }
 471
 472   $app --version 2>&1 | sed -n "$get_version_sed"
 473 }
 474
 475 check_versions() {
 476   ret=0
 477
 478   while read app req_ver; do
 479     # We only need libtoolize from the libtool package.
 480     if test "$app" = libtool; then
 481       app=libtoolize
 482     fi
 483     # Exempt git if --no-git is in effect.
 484     if test "$app" = git; then
 485       $use_git || continue
 486     fi
 487     # Honor $APP variables ($TAR, $AUTOCONF, etc.)
 488     appvar=$(echo $app | LC_ALL=C tr '[a-z]-' '[A-Z]_')
 489     test "$appvar" = TAR && appvar=AMTAR
 490     case $appvar in
 491         GZIP) ;; # Do not use $GZIP:  it contains gzip options.
 492         PERL::*) ;; # Keep perl modules as-is
 493         *) eval "app=\${$appvar-$app}" ;;
 494     esac
 495
 496     # Handle the still-experimental Automake-NG programs specially.
 497     # They remain named as the mainstream Automake programs ("automake",
 498     # and "aclocal") to avoid gratuitous incompatibilities with
 499     # pre-existing usages (by, say, autoreconf, or custom autogen.sh
 500     # scripts), but correctly identify themselves (as being part of
 501     # "GNU automake-ng") when asked their version.
 502     case $app in
 503       automake-ng|aclocal-ng)
 504         app=${app%-ng}
 505         ($app --version | grep '(GNU automake-ng)') >/dev/null 2>&1 || {
 506           warn_ "Error: '$app' not found or not from Automake-NG"
 507           ret=1
 508           continue
 509         } ;;
 510       # Another check is for perl modules.  These can be written as
 511       # e.g. perl::XML::XPath in case of XML::XPath module, etc.
 512       perl::*)
 513         # Extract module name
 514         app="${app#perl::}"
 515         if ! $PERL -m"$app" -e 'exit 0' >/dev/null 2>&1; then
 516           warn_ "Error: perl module '$app' not found"
 517           ret=1
 518         fi
 519         continue
 520         ;;
 521     esac
 522     if [ "$req_ver" = "-" ]; then
 523       # Merely require app to exist; not all prereq apps are well-behaved
 524       # so we have to rely on $? rather than get_version.
 525       if ! check_exists --verbose $app; then
 526         warn_ "Error: '$app' not found"
 527         ret=1
 528       fi
 529     else
 530       # Require app to produce a new enough version string.
 531       inst_ver=$(get_version $app)
 532       if [ ! "$inst_ver" ]; then
 533         warn_ "Error: '$app' not found"
 534         ret=1
 535       else
 536         latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)
 537         if [ ! "$latest_ver" = "$inst_ver" ]; then
 538           warnf_ '%s\n'                                        \
 539               "Error: '$app' version == $inst_ver is too old"  \
 540               "       '$app' version >= $req_ver is required"
 541           ret=1
 542         fi
 543       fi
 544     fi
 545   done
 546
 547   return $ret
 548 }
 549
 550 print_versions() {
 551   echo "Program    Min_version"
 552   echo "----------------------"
 553   printf %s "$buildreq"
 554   echo "----------------------"
 555   # can't depend on column -t
 556 }
 557
 558 # Find sha1sum, named gsha1sum on MacPorts, shasum on Mac OS X 10.6.
 559 # Also find the compatible sha1 utility on the BSDs
 560 if test x"$SKIP_PO" = x; then
 561   find_tool SHA1SUM sha1sum gsha1sum shasum sha1
 562 fi
 563
 564 use_libtool=0
 565 # We'd like to use grep -E, to see if any of LT_INIT,
 566 # AC_PROG_LIBTOOL, AM_PROG_LIBTOOL is used in configure.ac,
 567 # but that's not portable enough (e.g., for Solaris).
 568 grep '^[         ]*A[CM]_PROG_LIBTOOL' configure.ac >/dev/null \
 569   && use_libtool=1
 570 grep '^[         ]*LT_INIT' configure.ac >/dev/null \
 571   && use_libtool=1
 572 if test $use_libtool = 1; then
 573   find_tool LIBTOOLIZE glibtoolize libtoolize
 574 fi
 575
 576 # gnulib-tool requires at least automake and autoconf.
 577 # If either is not listed, add it (with minimum version) as a prerequisite.
 578 case $buildreq in
 579   *automake*) ;;
 580   *) buildreq="automake 1.9
 581 $buildreq" ;;
 582 esac
 583 case $buildreq in
 584   *autoconf*) ;;
 585   *) buildreq="autoconf 2.59
 586 $buildreq" ;;
 587 esac
 588
 589 # When we can deduce that gnulib-tool will require patch,
 590 # and when patch is not already listed as a prerequisite, add it, too.
 591 if test -d "$local_gl_dir" \
 592     && ! find "$local_gl_dir" -name '*.diff' -exec false {} +; then
 593   case $buildreq in
 594     *patch*) ;;
 595     *) buildreq="patch -
 596 $buildreq" ;;
 597   esac
 598 fi
 599
 600 if ! printf "$buildreq" | check_versions; then
 601   echo >&2
 602   if test -f README-prereq; then
 603     die "See README-prereq for how to get the prerequisite programs"
 604   else
 605     die "Please install the prerequisite programs"
 606   fi
 607 fi
 608
 609 # Warn the user if autom4te appears to be broken; this causes known
 610 # issues with at least gettext 0.18.3.
 611 probe=$(echo 'm4_quote([hi])' | autom4te -l M4sugar -t 'm4_quote:$%' -)
 612 if test "x$probe" != xhi; then
 613   warn_ "WARNING: your autom4te wrapper eats stdin;"
 614   warn_ "if bootstrap fails, consider upgrading your autotools"
 615 fi
 616
 617 echo "$0: Bootstrapping from checked-out $package sources..."
 618
 619 # See if we can use gnulib's git-merge-changelog merge driver.
 620 if $use_git && test -d .git && check_exists git; then
 621   if git config merge.merge-changelog.driver >/dev/null ; then
 622     :
 623   elif check_exists git-merge-changelog; then
 624     echo "$0: initializing git-merge-changelog driver"
 625     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
 626     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
 627   else
 628     echo "$0: consider installing git-merge-changelog from gnulib"
 629   fi
 630 fi
 631
 632
 633 cleanup_gnulib() {
 634   status=$?
 635   rm -fr "$gnulib_path"
 636   exit $status
 637 }
 638
 639 git_modules_config () {
 640   test -f .gitmodules && git config --file .gitmodules "$@"
 641 }
 642
 643 if $use_gnulib; then
 644   if $use_git; then
 645     gnulib_path=$(git_modules_config submodule.gnulib.path)
 646     test -z "$gnulib_path" && gnulib_path=gnulib
 647   fi
 648
 649   # Get gnulib files.  Populate $GNULIB_SRCDIR, possibly updating a
 650   # submodule, for use in the rest of the script.
 651
 652   case ${GNULIB_SRCDIR--} in
 653   -)
 654     # Note that $use_git is necessarily true in this case.
 655     if git_modules_config submodule.gnulib.url >/dev/null; then
 656       echo "$0: getting gnulib files..."
 657       git submodule init -- "$gnulib_path" || exit $?
 658       git submodule update -- "$gnulib_path" || exit $?
 659
 660     elif [ ! -d "$gnulib_path" ]; then
 661       echo "$0: getting gnulib files..."
 662
 663       trap cleanup_gnulib 1 2 13 15
 664
 665       shallow=
 666       if test -z "$GNULIB_REVISION"; then
 667         git clone -h 2>&1 | grep -- --depth > /dev/null && shallow='--depth 2'
 668       fi
 669       git clone $shallow ${GNULIB_URL:-$default_gnulib_url} "$gnulib_path" \
 670         || cleanup_gnulib
 671
 672       trap - 1 2 13 15
 673     fi
 674     GNULIB_SRCDIR=$gnulib_path
 675     ;;
 676   *)
 677     # Use GNULIB_SRCDIR directly or as a reference.
 678     if $use_git && test -d "$GNULIB_SRCDIR"/.git && \
 679           git_modules_config submodule.gnulib.url >/dev/null; then
 680       echo "$0: getting gnulib files..."
 681       if git submodule -h|grep -- --reference > /dev/null; then
 682         # Prefer the one-liner available in git 1.6.4 or newer.
 683         git submodule update --init --reference "$GNULIB_SRCDIR" \
 684           "$gnulib_path" || exit $?
 685       else
 686         # This fallback allows at least git 1.5.5.
 687         if test -f "$gnulib_path"/gnulib-tool; then
 688           # Since file already exists, assume submodule init already complete.
 689           git submodule update -- "$gnulib_path" || exit $?
 690         else
 691           # Older git can't clone into an empty directory.
 692           rmdir "$gnulib_path" 2>/dev/null
 693           git clone --reference "$GNULIB_SRCDIR" \
 694             "$(git_modules_config submodule.gnulib.url)" "$gnulib_path" \
 695             && git submodule init -- "$gnulib_path" \
 696             && git submodule update -- "$gnulib_path" \
 697             || exit $?
 698         fi
 699       fi
 700       GNULIB_SRCDIR=$gnulib_path
 701     fi
 702     ;;
 703   esac
 704
 705   if test -d "$GNULIB_SRCDIR"/.git && test -n "$GNULIB_REVISION" \
 706      && ! git_modules_config submodule.gnulib.url >/dev/null; then
 707     (cd "$GNULIB_SRCDIR" && git checkout "$GNULIB_REVISION") || cleanup_gnulib
 708   fi
 709
 710   # $GNULIB_SRCDIR now points to the version of gnulib to use, and
 711   # we no longer need to use git or $gnulib_path below here.
 712
 713   if $bootstrap_sync; then
 714     cmp -s "$0" "$GNULIB_SRCDIR/build-aux/bootstrap" || {
 715       echo "$0: updating bootstrap and restarting..."
 716       case $(sh -c 'echo "$1"' -- a) in
 717         a) ignored=--;;
 718         *) ignored=ignored;;
 719       esac
 720       exec sh -c \
 721         'cp "$1" "$2" && shift && exec "${CONFIG_SHELL-/bin/sh}" "$@"' \
 722         $ignored "$GNULIB_SRCDIR/build-aux/bootstrap" \
 723         "$0" "$@" --no-bootstrap-sync
 724     }
 725   fi
 726
 727   gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 728   <$gnulib_tool || exit $?
 729 fi
 730
 731 # Get translations.
 732
 733 download_po_files() {
 734   subdir=$1
 735   domain=$2
 736   echo "$me: getting translations into $subdir for $domain..."
 737   cmd=$(printf "$po_download_command_format" "$subdir" "$domain")
 738   eval "$cmd"
 739 }
 740
 741 # Mirror .po files to $po_dir/.reference and copy only the new
 742 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.
 743 # Note po files that exist locally only are left in $po_dir but will
 744 # not be included in LINGUAS and hence will not be distributed.
 745 update_po_files() {
 746   # Directory containing primary .po files.
 747   # Overwrite them only when we're sure a .po file is new.
 748   po_dir=$1
 749   domain=$2
 750
 751   # Mirror *.po files into this dir.
 752   # Usually contains *.s1 checksum files.
 753   ref_po_dir="$po_dir/.reference"
 754
 755   test -d $ref_po_dir || mkdir $ref_po_dir || return
 756   download_po_files $ref_po_dir $domain \
 757     && ls "$ref_po_dir"/*.po 2>/dev/null |
 758       sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS" || return
 759
 760   langs=$(cd $ref_po_dir && echo *.po | sed 's/\.po//g')
 761   test "$langs" = '*' && langs=x
 762   for po in $langs; do
 763     case $po in x) continue;; esac
 764     new_po="$ref_po_dir/$po.po"
 765     cksum_file="$ref_po_dir/$po.s1"
 766     if ! test -f "$cksum_file" ||
 767         ! test -f "$po_dir/$po.po" ||
 768         ! $SHA1SUM -c "$cksum_file" < "$new_po" > /dev/null 2>&1; then
 769       echo "$me: updated $po_dir/$po.po..."
 770       cp "$new_po" "$po_dir/$po.po" \
 771           && $SHA1SUM < "$new_po" > "$cksum_file" || return
 772     fi
 773   done
 774 }
 775
 776 case $SKIP_PO in
 777 '')
 778   if test -d po; then
 779     update_po_files po $package || exit
 780   fi
 781
 782   if test -d runtime-po; then
 783     update_po_files runtime-po $package-runtime || exit
 784   fi;;
 785 esac
 786
 787 symlink_to_dir()
 788 {
 789   src=$1/$2
 790   dst=${3-$2}
 791
 792   test -f "$src" && {
 793
 794     # If the destination directory doesn't exist, create it.
 795     # This is required at least for "lib/uniwidth/cjk.h".
 796     dst_dir=$(dirname "$dst")
 797     if ! test -d "$dst_dir"; then
 798       mkdir -p "$dst_dir"
 799
 800       # If we've just created a directory like lib/uniwidth,
 801       # tell version control system(s) it's ignorable.
 802       # FIXME: for now, this does only one level
 803       parent=$(dirname "$dst_dir")
 804       for dot_ig in x $vc_ignore; do
 805         test $dot_ig = x && continue
 806         ig=$parent/$dot_ig
 807         insert_vc_ignore $ig "${dst_dir##*/}"
 808       done
 809     fi
 810
 811     if $copy; then
 812       {
 813         test ! -h "$dst" || {
 814           echo "$me: rm -f $dst" &&
 815           rm -f "$dst"
 816         }
 817       } &&
 818       test -f "$dst" &&
 819       cmp -s "$src" "$dst" || {
 820         echo "$me: cp -fp $src $dst" &&
 821         cp -fp "$src" "$dst"
 822       }
 823     else
 824       # Leave any existing symlink alone, if it already points to the source,
 825       # so that broken build tools that care about symlink times
 826       # aren't confused into doing unnecessary builds.  Conversely, if the
 827       # existing symlink's timestamp is older than the source, make it afresh,
 828       # so that broken tools aren't confused into skipping needed builds.  See
 829       # <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00326.html>.
 830       test -h "$dst" &&
 831       src_ls=$(ls -diL "$src" 2>/dev/null) && set $src_ls && src_i=$1 &&
 832       dst_ls=$(ls -diL "$dst" 2>/dev/null) && set $dst_ls && dst_i=$1 &&
 833       test "$src_i" = "$dst_i" &&
 834       both_ls=$(ls -dt "$src" "$dst") &&
 835       test "X$both_ls" = "X$dst$nl$src" || {
 836         dot_dots=
 837         case $src in
 838         /*) ;;
 839         *)
 840           case /$dst/ in
 841           *//* | */../* | */./* | /*/*/*/*/*/)
 842              die "invalid symlink calculation: $src -> $dst";;
 843           /*/*/*/*/)    dot_dots=../../../;;
 844           /*/*/*/)      dot_dots=../../;;
 845           /*/*/)        dot_dots=../;;
 846           esac;;
 847         esac
 848
 849         echo "$me: ln -fs $dot_dots$src $dst" &&
 850         ln -fs "$dot_dots$src" "$dst"
 851       }
 852     fi
 853   }
 854 }
 855
 856 version_controlled_file() {
 857   parent=$1
 858   file=$2
 859   if test -d .git; then
 860     git rm -n "$file" > /dev/null 2>&1
 861   elif test -d .svn; then
 862     svn log -r HEAD "$file" > /dev/null 2>&1
 863   elif test -d CVS; then
 864     grep -F "/${file##*/}/" "$parent/CVS/Entries" 2>/dev/null |
 865              grep '^/[^/]*/[0-9]' > /dev/null
 866   else
 867     warn_ "no version control for $file?"
 868     false
 869   fi
 870 }
 871
 872 # NOTE: we have to be careful to run both autopoint and libtoolize
 873 # before gnulib-tool, since gnulib-tool is likely to provide newer
 874 # versions of files "installed" by these two programs.
 875 # Then, *after* gnulib-tool (see below), we have to be careful to
 876 # run autoreconf in such a way that it does not run either of these
 877 # two just-pre-run programs.
 878
 879 # Import from gettext.
 880 with_gettext=yes
 881 grep '^[         ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
 882     with_gettext=no
 883
 884 if test $with_gettext = yes || test $use_libtool = 1; then
 885
 886   tempbase=.bootstrap$$
 887   trap "rm -f $tempbase.0 $tempbase.1" 1 2 13 15
 888
 889   > $tempbase.0 > $tempbase.1 &&
 890   find . ! -type d -print | sort > $tempbase.0 || exit
 891
 892   if test $with_gettext = yes; then
 893     # Released autopoint has the tendency to install macros that have been
 894     # obsoleted in current gnulib, so run this before gnulib-tool.
 895     echo "$0: $AUTOPOINT --force"
 896     $AUTOPOINT --force || exit
 897   fi
 898
 899   # Autoreconf runs aclocal before libtoolize, which causes spurious
 900   # warnings if the initial aclocal is confused by the libtoolized
 901   # (or worse out-of-date) macro directory.
 902   # libtoolize 1.9b added the --install option; but we support back
 903   # to libtoolize 1.5.22, where the install action was default.
 904   if test $use_libtool = 1; then
 905     install=
 906     case $($LIBTOOLIZE --help) in
 907       *--install*) install=--install ;;
 908     esac
 909     echo "running: $LIBTOOLIZE $install --copy"
 910     $LIBTOOLIZE $install --copy
 911   fi
 912
 913   find . ! -type d -print | sort >$tempbase.1
 914   old_IFS=$IFS
 915   IFS=$nl
 916   for file in $(comm -13 $tempbase.0 $tempbase.1); do
 917     IFS=$old_IFS
 918     parent=${file%/*}
 919     version_controlled_file "$parent" "$file" || {
 920       for dot_ig in x $vc_ignore; do
 921         test $dot_ig = x && continue
 922         ig=$parent/$dot_ig
 923         insert_vc_ignore "$ig" "${file##*/}"
 924       done
 925     }
 926   done
 927   IFS=$old_IFS
 928
 929   rm -f $tempbase.0 $tempbase.1
 930   trap - 1 2 13 15
 931 fi
 932
 933 # Import from gnulib.
 934
 935 if $use_gnulib; then
 936   gnulib_tool_options="\
 937    --no-changelog\
 938    --aux-dir=$build_aux\
 939    --doc-base=$doc_base\
 940    --lib=$gnulib_name\
 941    --m4-base=$m4_base/\
 942    --source-base=$source_base/\
 943    --tests-base=$tests_base\
 944    --local-dir=$local_gl_dir\
 945    $gnulib_tool_option_extras\
 946   "
 947   if test $use_libtool = 1; then
 948     case "$gnulib_tool_options " in
 949       *' --libtool '*) ;;
 950       *) gnulib_tool_options="$gnulib_tool_options --libtool" ;;
 951     esac
 952   fi
 953   echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 954   $gnulib_tool $gnulib_tool_options --import $gnulib_modules \
 955     || die "gnulib-tool failed"
 956
 957   for file in $gnulib_files; do
 958     symlink_to_dir "$GNULIB_SRCDIR" $file \
 959       || die "failed to symlink $file"
 960   done
 961 fi
 962
 963 bootstrap_post_import_hook \
 964   || die "bootstrap_post_import_hook failed"
 965
 966 # Don't proceed if there are uninitialized submodules.  In particular,
 967 # the next step will remove dangling links, which might be links into
 968 # uninitialized submodules.
 969 #
 970 # Uninitialized submodules are listed with an initial dash.
 971 if $use_git && git submodule | grep '^-' >/dev/null; then
 972   die "some git submodules are not initialized. "     \
 973       "Run 'git submodule update --init' and bootstrap again."
 974 fi
 975
 976 # Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
 977 # gnulib-populated directories.  Such .m4 files would cause aclocal to fail.
 978 # The following requires GNU find 4.2.3 or newer.  Considering the usual
 979 # portability constraints of this script, that may seem a very demanding
 980 # requirement, but it should be ok.  Ignore any failure, which is fine,
 981 # since this is only a convenience to help developers avoid the relatively
 982 # unusual case in which a symlinked-to .m4 file is git-removed from gnulib
 983 # between successive runs of this script.
 984 find "$m4_base" "$source_base" \
 985   -depth \( -name '*.m4' -o -name '*.[ch]' \) \
 986   -type l -xtype l -delete > /dev/null 2>&1
 987
 988 # Invoke autoreconf with --force --install to ensure upgrades of tools
 989 # such as ylwrap.
 990 AUTORECONFFLAGS="--verbose --install --force -I $m4_base $ACLOCAL_FLAGS"
 991
 992 # Some systems (RHEL 5) are using ancient autotools, for which the
 993 # --no-recursive option had not been invented.  Detect that lack and
 994 # omit the option when it's not supported.  FIXME in 2017: remove this
 995 # hack when RHEL 5 autotools are updated, or when they become irrelevant.
 996 case $($AUTORECONF --help) in
 997   *--no-recursive*) AUTORECONFFLAGS="$AUTORECONFFLAGS --no-recursive";;
 998 esac
 999
1000 # Tell autoreconf not to invoke autopoint or libtoolize; they were run above.
1001 echo "running: AUTOPOINT=true LIBTOOLIZE=true $AUTORECONF $AUTORECONFFLAGS"
1002 AUTOPOINT=true LIBTOOLIZE=true $AUTORECONF $AUTORECONFFLAGS \
1003   || die "autoreconf failed"
1004
1005 # Get some extra files from gnulib, overriding existing files.
1006 for file in $gnulib_extra_files; do
1007   case $file in
1008   */INSTALL) dst=INSTALL;;
1009   build-aux/*) dst=$build_aux/${file#build-aux/};;
1010   *) dst=$file;;
1011   esac
1012   symlink_to_dir "$GNULIB_SRCDIR" $file $dst \
1013     || die "failed to symlink $file"
1014 done
1015
1016 if test $with_gettext = yes; then
1017   # Create gettext configuration.
1018   echo "$0: Creating po/Makevars from po/Makevars.template ..."
1019   rm -f po/Makevars
1020   sed '
1021     /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/
1022     /^COPYRIGHT_HOLDER *=/s/=.*/= '"$COPYRIGHT_HOLDER"'/
1023     /^MSGID_BUGS_ADDRESS *=/s|=.*|= '"$MSGID_BUGS_ADDRESS"'|
1024     /^XGETTEXT_OPTIONS *=/{
1025       s/$/ \\/
1026       a\
1027           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
1028     }
1029   ' po/Makevars.template >po/Makevars \
1030     || die 'cannot generate po/Makevars'
1031
1032   # If the 'gettext' module is in use, grab the latest Makefile.in.in.
1033   # If only the 'gettext-h' module is in use, assume autopoint already
1034   # put the correct version of this file into place.
1035   case $gnulib_modules in
1036   *gettext-h*) ;;
1037   *gettext*)
1038     cp $GNULIB_SRCDIR/build-aux/po/Makefile.in.in po/Makefile.in.in \
1039       || die "cannot create po/Makefile.in.in"
1040     ;;
1041   esac
1042
1043   if test -d runtime-po; then
1044     # Similarly for runtime-po/Makevars, but not quite the same.
1045     rm -f runtime-po/Makevars
1046     sed '
1047       /^DOMAIN *=.*/s/=.*/= '"$package"'-runtime/
1048       /^subdir *=.*/s/=.*/= runtime-po/
1049       /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
1050       /^XGETTEXT_OPTIONS *=/{
1051         s/$/ \\/
1052         a\
1053             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
1054       }
1055     ' po/Makevars.template >runtime-po/Makevars \
1056     || die 'cannot generate runtime-po/Makevars'
1057
1058     # Copy identical files from po to runtime-po.
1059     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)
1060   fi
1061 fi
1062
1063 bootstrap_epilogue
1064
1065 echo "$0: done.  Now you can run './configure'."
1066
1067 # Local variables:
1068 # eval: (add-hook 'before-save-hook 'time-stamp)
1069 # time-stamp-start: "scriptversion="
1070 # time-stamp-format: "%:y-%02m-%02d.%02H"
1071 # time-stamp-time-zone: "UTC0"
1072 # time-stamp-end: "; # UTC"
1073 # End: