bootstrap

   1 #! /bin/sh
   2 # Print a version string.
   3 scriptversion=2016-11-03.18; # UTC
   4
   5 # Bootstrap this package from checked-out sources.
   6
   7 # Copyright (C) 2003-2017 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 <http://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 usage() {
  51   cat <<EOF
  52 Usage: $me [OPTION]...
  53 Bootstrap this package from the checked-out sources.
  54
  55 Options:
  56  --gnulib-srcdir=DIRNAME  specify the local directory where gnulib
  57                           sources reside.  Use this if you already
  58                           have gnulib sources on your machine, and
  59                           do not want to waste your bandwidth downloading
  60                           them again.  Defaults to \$GNULIB_SRCDIR
  61  --bootstrap-sync         if this bootstrap script is not identical to
  62                           the version in the local gnulib sources,
  63                           update this script, and then restart it with
  64                           /bin/sh or the shell \$CONFIG_SHELL
  65  --no-bootstrap-sync      do not check whether bootstrap is out of sync
  66  --copy                   copy files instead of creating symbolic links
  67  --force                  attempt to bootstrap even if the sources seem
  68                           not to have been checked out
  69  --no-git                 do not use git to update gnulib.  Requires that
  70                           --gnulib-srcdir point to a correct gnulib snapshot
  71  --skip-po                do not download po files
  72
  73 If the file $me.conf exists in the same directory as this script, its
  74 contents are read as shell variables to configure the bootstrap.
  75
  76 For build prerequisites, environment variables like \$AUTOCONF and \$AMTAR
  77 are honored.
  78
  79 Running without arguments will suffice in most cases.
  80 EOF
  81 }
  82
  83 # warnf_ FORMAT-STRING ARG1...
  84 warnf_ ()
  85 {
  86   warnf_format_=$1
  87   shift
  88   nl='
  89 '
  90   case $* in
  91     *$nl*) me_=$(printf "$me"|tr "$nl|" '??')
  92        printf "$warnf_format_" "$@" | sed "s|^|$me_: |" ;;
  93     *) printf "$me: $warnf_format_" "$@" ;;
  94   esac >&2
  95 }
  96
  97 # warn_ WORD1...
  98 warn_ ()
  99 {
 100   # If IFS does not start with ' ', set it and emit the warning in a subshell.
 101   case $IFS in
 102     ' '*) warnf_ '%s\n' "$*";;
 103     *)    (IFS=' '; warn_ "$@");;
 104   esac
 105 }
 106
 107 # die WORD1...
 108 die() { warn_ "$@"; exit 1; }
 109
 110 # Configuration.
 111
 112 # Name of the Makefile.am
 113 gnulib_mk=gnulib.mk
 114
 115 # List of gnulib modules needed.
 116 gnulib_modules=
 117
 118 # Any gnulib files needed that are not in modules.
 119 gnulib_files=
 120
 121 : ${AUTOPOINT=autopoint}
 122 : ${AUTORECONF=autoreconf}
 123
 124 # A function to be called right after gnulib-tool is run.
 125 # Override it via your own definition in bootstrap.conf.
 126 bootstrap_post_import_hook() { :; }
 127
 128 # A function to be called after everything else in this script.
 129 # Override it via your own definition in bootstrap.conf.
 130 bootstrap_epilogue() { :; }
 131
 132 # The command to download all .po files for a specified domain into
 133 # a specified directory.  Fill in the first %s is the domain name, and
 134 # the second with the destination directory.  Use rsync's -L and -r
 135 # options because the latest/%s directory and the .po files within are
 136 # all symlinks.
 137 po_download_command_format=\
 138 "rsync --delete --exclude '*.s1' -Lrtvz \
 139  'translationproject.org::tp/latest/%s/' '%s'"
 140
 141 # Fallback for downloading .po files (if rsync fails).
 142 po_download_command_format2=\
 143 "wget --mirror -nd -q -np -A.po -P '%s' \
 144  http://translationproject.org/latest/%s/"
 145
 146 # Prefer a non-empty tarname (4th argument of AC_INIT if given), else
 147 # fall back to the package name (1st argument with munging)
 148 extract_package_name='
 149   /^AC_INIT(\[*/{
 150      s///
 151      /^[^,]*,[^,]*,[^,]*,[ []*\([^][ ,)]\)/{
 152        s//\1/
 153        s/[],)].*//
 154        p
 155        q
 156      }
 157      s/[],)].*//
 158      s/^GNU //
 159      y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
 160      s/[^abcdefghijklmnopqrstuvwxyz0123456789_]/-/g
 161      p
 162   }
 163 '
 164 package=$(sed -n "$extract_package_name" configure.ac) \
 165   || die 'cannot find package name in configure.ac'
 166 gnulib_name=lib$package
 167
 168 build_aux=build-aux
 169 source_base=lib
 170 m4_base=m4
 171 doc_base=doc
 172 tests_base=tests
 173 gnulib_extra_files=''
 174
 175 # Additional gnulib-tool options to use.  Use "\newline" to break lines.
 176 gnulib_tool_option_extras=
 177
 178 # Other locale categories that need message catalogs.
 179 EXTRA_LOCALE_CATEGORIES=
 180
 181 # Additional xgettext options to use.  Use "\\\newline" to break lines.
 182 XGETTEXT_OPTIONS='\\\
 183  --flag=_:1:pass-c-format\\\
 184  --flag=N_:1:pass-c-format\\\
 185  --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 186 '
 187
 188 # Package bug report address and copyright holder for gettext files
 189 COPYRIGHT_HOLDER='Free Software Foundation, Inc.'
 190 MSGID_BUGS_ADDRESS=bug-$package@gnu.org
 191
 192 # Files we don't want to import.
 193 excluded_files=
 194
 195 # File that should exist in the top directory of a checked out hierarchy,
 196 # but not in a distribution tarball.
 197 checkout_only_file=README-hacking
 198
 199 # Whether to use copies instead of symlinks.
 200 copy=false
 201
 202 # Set this to '.cvsignore .gitignore' in bootstrap.conf if you want
 203 # those files to be generated in directories like lib/, m4/, and po/.
 204 # Or set it to 'auto' to make this script select which to use based
 205 # on which version control system (if any) is used in the source directory.
 206 vc_ignore=auto
 207
 208 # Set this to true in bootstrap.conf to enable --bootstrap-sync by
 209 # default.
 210 bootstrap_sync=false
 211
 212 # Use git to update gnulib sources
 213 use_git=true
 214
 215 check_exists() {
 216   if test "$1" = "--verbose"; then
 217     ($2 --version </dev/null) >/dev/null 2>&1
 218     if test $? -ge 126; then
 219       # If not found, run with diagnostics as one may be
 220       # presented with env variables to set to find the right version
 221       ($2 --version </dev/null)
 222     fi
 223   else
 224     ($1 --version </dev/null) >/dev/null 2>&1
 225   fi
 226
 227   test $? -lt 126
 228 }
 229
 230 # find_tool ENVVAR NAMES...
 231 # -------------------------
 232 # Search for a required program.  Use the value of ENVVAR, if set,
 233 # otherwise find the first of the NAMES that can be run.
 234 # If found, set ENVVAR to the program name, die otherwise.
 235 #
 236 # FIXME: code duplication, see also gnu-web-doc-update.
 237 find_tool ()
 238 {
 239   find_tool_envvar=$1
 240   shift
 241   find_tool_names=$@
 242   eval "find_tool_res=\$$find_tool_envvar"
 243   if test x"$find_tool_res" = x; then
 244     for i; do
 245       if check_exists $i; then
 246         find_tool_res=$i
 247         break
 248       fi
 249     done
 250   fi
 251   if test x"$find_tool_res" = x; then
 252     warn_ "one of these is required: $find_tool_names;"
 253     die   "alternatively set $find_tool_envvar to a compatible tool"
 254   fi
 255   eval "$find_tool_envvar=\$find_tool_res"
 256   eval "export $find_tool_envvar"
 257 }
 258
 259 # Override the default configuration, if necessary.
 260 # Make sure that bootstrap.conf is sourced from the current directory
 261 # if we were invoked as "sh bootstrap".
 262 case "$0" in
 263   */*) test -r "$0.conf" && . "$0.conf" ;;
 264   *) test -r "$0.conf" && . ./"$0.conf" ;;
 265 esac
 266
 267 # Extra files from gnulib, which override files from other sources.
 268 test -z "${gnulib_extra_files}" && \
 269   gnulib_extra_files="
 270         build-aux/install-sh
 271         build-aux/mdate-sh
 272         build-aux/texinfo.tex
 273         build-aux/depcomp
 274         build-aux/config.guess
 275         build-aux/config.sub
 276         doc/INSTALL
 277 "
 278
 279 if test "$vc_ignore" = auto; then
 280   vc_ignore=
 281   test -d .git && vc_ignore=.gitignore
 282   test -d CVS && vc_ignore="$vc_ignore .cvsignore"
 283 fi
 284
 285 # Translate configuration into internal form.
 286
 287 # Parse options.
 288
 289 for option
 290 do
 291   case $option in
 292   --help)
 293     usage
 294     exit;;
 295   --gnulib-srcdir=*)
 296     GNULIB_SRCDIR=${option#--gnulib-srcdir=};;
 297   --skip-po)
 298     SKIP_PO=t;;
 299   --force)
 300     checkout_only_file=;;
 301   --copy)
 302     copy=true;;
 303   --bootstrap-sync)
 304     bootstrap_sync=true;;
 305   --no-bootstrap-sync)
 306     bootstrap_sync=false;;
 307   --no-git)
 308     use_git=false;;
 309   *)
 310     die "$option: unknown option";;
 311   esac
 312 done
 313
 314 $use_git || test -d "$GNULIB_SRCDIR" \
 315   || die "Error: --no-git requires --gnulib-srcdir"
 316
 317 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
 318   die "Bootstrapping from a non-checked-out distribution is risky."
 319 fi
 320
 321 # Strip blank and comment lines to leave significant entries.
 322 gitignore_entries() {
 323   sed '/^#/d; /^$/d' "$@"
 324 }
 325
 326 # If $STR is not already on a line by itself in $FILE, insert it at the start.
 327 # Entries are inserted at the start of the ignore list to ensure existing
 328 # entries starting with ! are not overridden.  Such entries support
 329 # whitelisting exceptions after a more generic blacklist pattern.
 330 insert_if_absent() {
 331   file=$1
 332   str=$2
 333   test -f $file || touch $file
 334   test -r $file || die "Error: failed to read ignore file: $file"
 335   duplicate_entries=$(gitignore_entries $file | sort | uniq -d)
 336   if [ "$duplicate_entries" ] ; then
 337     die "Error: Duplicate entries in $file: " $duplicate_entries
 338   fi
 339   linesold=$(gitignore_entries $file | wc -l)
 340   linesnew=$( { echo "$str"; cat $file; } | gitignore_entries | sort -u | wc -l)
 341   if [ $linesold != $linesnew ] ; then
 342     { echo "$str" | cat - $file > $file.bak && mv $file.bak $file; } \
 343       || die "insert_if_absent $file $str: failed"
 344   fi
 345 }
 346
 347 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
 348 # insert_if_absent.
 349 insert_vc_ignore() {
 350   vc_ignore_file="$1"
 351   pattern="$2"
 352   case $vc_ignore_file in
 353   *.gitignore)
 354     # A .gitignore entry that does not start with '/' applies
 355     # recursively to subdirectories, so prepend '/' to every
 356     # .gitignore entry.
 357     pattern=$(echo "$pattern" | sed s,^,/,);;
 358   esac
 359   insert_if_absent "$vc_ignore_file" "$pattern"
 360 }
 361
 362 # Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
 363 found_aux_dir=no
 364 grep '^[         ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
 365     >/dev/null && found_aux_dir=yes
 366 grep '^[         ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
 367     >/dev/null && found_aux_dir=yes
 368 test $found_aux_dir = yes \
 369   || die "configure.ac lacks 'AC_CONFIG_AUX_DIR([$build_aux])'; add it"
 370
 371 # If $build_aux doesn't exist, create it now, otherwise some bits
 372 # below will malfunction.  If creating it, also mark it as ignored.
 373 if test ! -d $build_aux; then
 374   mkdir $build_aux
 375   for dot_ig in x $vc_ignore; do
 376     test $dot_ig = x && continue
 377     insert_vc_ignore $dot_ig $build_aux
 378   done
 379 fi
 380
 381 # Note this deviates from the version comparison in automake
 382 # in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a
 383 # but this should suffice as we won't be specifying old
 384 # version formats or redundant trailing .0 in bootstrap.conf.
 385 # If we did want full compatibility then we should probably
 386 # use m4_version_compare from autoconf.
 387 sort_ver() { # sort -V is not generally available
 388   ver1="$1"
 389   ver2="$2"
 390
 391   # split on '.' and compare each component
 392   i=1
 393   while : ; do
 394     p1=$(echo "$ver1" | cut -d. -f$i)
 395     p2=$(echo "$ver2" | cut -d. -f$i)
 396     if [ ! "$p1" ]; then
 397       echo "$1 $2"
 398       break
 399     elif [ ! "$p2" ]; then
 400       echo "$2 $1"
 401       break
 402     elif [ ! "$p1" = "$p2" ]; then
 403       if [ "$p1" -gt "$p2" ] 2>/dev/null; then # numeric comparison
 404         echo "$2 $1"
 405       elif [ "$p2" -gt "$p1" ] 2>/dev/null; then # numeric comparison
 406         echo "$1 $2"
 407       else # numeric, then lexicographic comparison
 408         lp=$(printf "$p1\n$p2\n" | LANG=C sort -n | tail -n1)
 409         if [ "$lp" = "$p2" ]; then
 410           echo "$1 $2"
 411         else
 412           echo "$2 $1"
 413         fi
 414       fi
 415       break
 416     fi
 417     i=$(($i+1))
 418   done
 419 }
 420
 421 get_version_sed='
 422 # Move version to start of line.
 423 s/.*[v ]\([0-9]\)/\1/
 424
 425 # Skip lines that do not start with version.
 426 /^[0-9]/!d
 427
 428 # Remove characters after the version.
 429 s/[^.a-z0-9-].*//
 430
 431 # The first component must be digits only.
 432 s/^\([0-9]*\)[a-z-].*/\1/
 433
 434 #the following essentially does s/5.005/5.5/
 435 s/\.0*\([1-9]\)/.\1/g
 436 p
 437 q'
 438
 439 get_version() {
 440   app=$1
 441
 442   $app --version >/dev/null 2>&1 || { $app --version; return 1; }
 443
 444   $app --version 2>&1 | sed -n "$get_version_sed"
 445 }
 446
 447 check_versions() {
 448   ret=0
 449
 450   while read app req_ver; do
 451     # We only need libtoolize from the libtool package.
 452     if test "$app" = libtool; then
 453       app=libtoolize
 454     fi
 455     # Exempt git if --no-git is in effect.
 456     if test "$app" = git; then
 457       $use_git || continue
 458     fi
 459     # Honor $APP variables ($TAR, $AUTOCONF, etc.)
 460     appvar=$(echo $app | LC_ALL=C tr '[a-z]-' '[A-Z]_')
 461     test "$appvar" = TAR && appvar=AMTAR
 462     case $appvar in
 463         GZIP) ;; # Do not use $GZIP:  it contains gzip options.
 464         PERL::*) ;; # Keep perl modules as-is
 465         *) eval "app=\${$appvar-$app}" ;;
 466     esac
 467
 468     # Handle the still-experimental Automake-NG programs specially.
 469     # They remain named as the mainstream Automake programs ("automake",
 470     # and "aclocal") to avoid gratuitous incompatibilities with
 471     # pre-existing usages (by, say, autoreconf, or custom autogen.sh
 472     # scripts), but correctly identify themselves (as being part of
 473     # "GNU automake-ng") when asked their version.
 474     case $app in
 475       automake-ng|aclocal-ng)
 476         app=${app%-ng}
 477         ($app --version | grep '(GNU automake-ng)') >/dev/null 2>&1 || {
 478           warn_ "Error: '$app' not found or not from Automake-NG"
 479           ret=1
 480           continue
 481         } ;;
 482       # Another check is for perl modules.  These can be written as
 483       # e.g. perl::XML::XPath in case of XML::XPath module, etc.
 484       perl::*)
 485         # Extract module name
 486         app="${app#perl::}"
 487         if ! $PERL -m"$app" -e 'exit 0' >/dev/null 2>&1; then
 488           warn_ "Error: perl module '$app' not found"
 489           ret=1
 490         fi
 491         continue
 492         ;;
 493     esac
 494     if [ "$req_ver" = "-" ]; then
 495       # Merely require app to exist; not all prereq apps are well-behaved
 496       # so we have to rely on $? rather than get_version.
 497       if ! check_exists --verbose $app; then
 498         warn_ "Error: '$app' not found"
 499         ret=1
 500       fi
 501     else
 502       # Require app to produce a new enough version string.
 503       inst_ver=$(get_version $app)
 504       if [ ! "$inst_ver" ]; then
 505         warn_ "Error: '$app' not found"
 506         ret=1
 507       else
 508         latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)
 509         if [ ! "$latest_ver" = "$inst_ver" ]; then
 510           warnf_ '%s\n'                                        \
 511               "Error: '$app' version == $inst_ver is too old"  \
 512               "       '$app' version >= $req_ver is required"
 513           ret=1
 514         fi
 515       fi
 516     fi
 517   done
 518
 519   return $ret
 520 }
 521
 522 print_versions() {
 523   echo "Program    Min_version"
 524   echo "----------------------"
 525   printf %s "$buildreq"
 526   echo "----------------------"
 527   # can't depend on column -t
 528 }
 529
 530 # Find sha1sum, named gsha1sum on MacPorts, shasum on Mac OS X 10.6.
 531 # Also find the compatible sha1 utility on the BSDs
 532 if test x"$SKIP_PO" = x; then
 533   find_tool SHA1SUM sha1sum gsha1sum shasum sha1
 534 fi
 535
 536 use_libtool=0
 537 # We'd like to use grep -E, to see if any of LT_INIT,
 538 # AC_PROG_LIBTOOL, AM_PROG_LIBTOOL is used in configure.ac,
 539 # but that's not portable enough (e.g., for Solaris).
 540 grep '^[         ]*A[CM]_PROG_LIBTOOL' configure.ac >/dev/null \
 541   && use_libtool=1
 542 grep '^[         ]*LT_INIT' configure.ac >/dev/null \
 543   && use_libtool=1
 544 if test $use_libtool = 1; then
 545   find_tool LIBTOOLIZE glibtoolize libtoolize
 546 fi
 547
 548 # gnulib-tool requires at least automake and autoconf.
 549 # If either is not listed, add it (with minimum version) as a prerequisite.
 550 case $buildreq in
 551   *automake*) ;;
 552   *) buildreq="automake 1.9
 553 $buildreq" ;;
 554 esac
 555 case $buildreq in
 556   *autoconf*) ;;
 557   *) buildreq="autoconf 2.59
 558 $buildreq" ;;
 559 esac
 560
 561 # When we can deduce that gnulib-tool will require patch,
 562 # and when patch is not already listed as a prerequisite, add it, too.
 563 if test -d "$local_gl_dir" \
 564     && ! find "$local_gl_dir" -name '*.diff' -exec false {} +; then
 565   case $buildreq in
 566     *patch*) ;;
 567     *) buildreq="patch -
 568 $buildreq" ;;
 569   esac
 570 fi
 571
 572 if ! printf "$buildreq" | check_versions; then
 573   echo >&2
 574   if test -f README-prereq; then
 575     die "See README-prereq for how to get the prerequisite programs"
 576   else
 577     die "Please install the prerequisite programs"
 578   fi
 579 fi
 580
 581 # Warn the user if autom4te appears to be broken; this causes known
 582 # issues with at least gettext 0.18.3.
 583 probe=$(echo 'm4_quote([hi])' | autom4te -l M4sugar -t 'm4_quote:$%' -)
 584 if test "x$probe" != xhi; then
 585   warn_ "WARNING: your autom4te wrapper eats stdin;"
 586   warn_ "if bootstrap fails, consider upgrading your autotools"
 587 fi
 588
 589 echo "$0: Bootstrapping from checked-out $package sources..."
 590
 591 # See if we can use gnulib's git-merge-changelog merge driver.
 592 if $use_git && test -d .git && check_exists git; then
 593   if git config merge.merge-changelog.driver >/dev/null ; then
 594     :
 595   elif check_exists git-merge-changelog; then
 596     echo "$0: initializing git-merge-changelog driver"
 597     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
 598     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
 599   else
 600     echo "$0: consider installing git-merge-changelog from gnulib"
 601   fi
 602 fi
 603
 604
 605 cleanup_gnulib() {
 606   status=$?
 607   rm -fr "$gnulib_path"
 608   exit $status
 609 }
 610
 611 git_modules_config () {
 612   test -f .gitmodules && git config --file .gitmodules "$@"
 613 }
 614
 615 if $use_git; then
 616   gnulib_path=$(git_modules_config submodule.gnulib.path)
 617   test -z "$gnulib_path" && gnulib_path=gnulib
 618 fi
 619
 620 # Get gnulib files.  Populate $GNULIB_SRCDIR, possibly updating a
 621 # submodule, for use in the rest of the script.
 622
 623 case ${GNULIB_SRCDIR--} in
 624 -)
 625   # Note that $use_git is necessarily true in this case.
 626   if git_modules_config submodule.gnulib.url >/dev/null; then
 627     echo "$0: getting gnulib files..."
 628     git submodule init -- "$gnulib_path" || exit $?
 629     git submodule update -- "$gnulib_path" || exit $?
 630
 631   elif [ ! -d "$gnulib_path" ]; then
 632     echo "$0: getting gnulib files..."
 633
 634     trap cleanup_gnulib 1 2 13 15
 635
 636     shallow=
 637     git clone -h 2>&1 | grep -- --depth > /dev/null && shallow='--depth 2'
 638     git clone $shallow git://git.sv.gnu.org/gnulib "$gnulib_path" ||
 639       cleanup_gnulib
 640
 641     trap - 1 2 13 15
 642   fi
 643   GNULIB_SRCDIR=$gnulib_path
 644   ;;
 645 *)
 646   # Use GNULIB_SRCDIR directly or as a reference.
 647   if $use_git && test -d "$GNULIB_SRCDIR"/.git && \
 648         git_modules_config submodule.gnulib.url >/dev/null; then
 649     echo "$0: getting gnulib files..."
 650     if git submodule -h|grep -- --reference > /dev/null; then
 651       # Prefer the one-liner available in git 1.6.4 or newer.
 652       git submodule update --init --reference "$GNULIB_SRCDIR" \
 653         "$gnulib_path" || exit $?
 654     else
 655       # This fallback allows at least git 1.5.5.
 656       if test -f "$gnulib_path"/gnulib-tool; then
 657         # Since file already exists, assume submodule init already complete.
 658         git submodule update -- "$gnulib_path" || exit $?
 659       else
 660         # Older git can't clone into an empty directory.
 661         rmdir "$gnulib_path" 2>/dev/null
 662         git clone --reference "$GNULIB_SRCDIR" \
 663           "$(git_modules_config submodule.gnulib.url)" "$gnulib_path" \
 664           && git submodule init -- "$gnulib_path" \
 665           && git submodule update -- "$gnulib_path" \
 666           || exit $?
 667       fi
 668     fi
 669     GNULIB_SRCDIR=$gnulib_path
 670   fi
 671   ;;
 672 esac
 673
 674 # $GNULIB_SRCDIR now points to the version of gnulib to use, and
 675 # we no longer need to use git or $gnulib_path below here.
 676
 677 if $bootstrap_sync; then
 678   cmp -s "$0" "$GNULIB_SRCDIR/build-aux/bootstrap" || {
 679     echo "$0: updating bootstrap and restarting..."
 680     case $(sh -c 'echo "$1"' -- a) in
 681       a) ignored=--;;
 682       *) ignored=ignored;;
 683     esac
 684     exec sh -c \
 685       'cp "$1" "$2" && shift && exec "${CONFIG_SHELL-/bin/sh}" "$@"' \
 686       $ignored "$GNULIB_SRCDIR/build-aux/bootstrap" \
 687       "$0" "$@" --no-bootstrap-sync
 688   }
 689 fi
 690
 691 gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 692 <$gnulib_tool || exit $?
 693
 694 # Get translations.
 695
 696 download_po_files() {
 697   subdir=$1
 698   domain=$2
 699   echo "$me: getting translations into $subdir for $domain..."
 700   cmd=$(printf "$po_download_command_format" "$domain" "$subdir")
 701   eval "$cmd" && return
 702   # Fallback to HTTP.
 703   cmd=$(printf "$po_download_command_format2" "$subdir" "$domain")
 704   eval "$cmd"
 705 }
 706
 707 # Mirror .po files to $po_dir/.reference and copy only the new
 708 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.
 709 # Note po files that exist locally only are left in $po_dir but will
 710 # not be included in LINGUAS and hence will not be distributed.
 711 update_po_files() {
 712   # Directory containing primary .po files.
 713   # Overwrite them only when we're sure a .po file is new.
 714   po_dir=$1
 715   domain=$2
 716
 717   # Mirror *.po files into this dir.
 718   # Usually contains *.s1 checksum files.
 719   ref_po_dir="$po_dir/.reference"
 720
 721   test -d $ref_po_dir || mkdir $ref_po_dir || return
 722   download_po_files $ref_po_dir $domain \
 723     && ls "$ref_po_dir"/*.po 2>/dev/null |
 724       sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS" || return
 725
 726   langs=$(cd $ref_po_dir && echo *.po | sed 's/\.po//g')
 727   test "$langs" = '*' && langs=x
 728   for po in $langs; do
 729     case $po in x) continue;; esac
 730     new_po="$ref_po_dir/$po.po"
 731     cksum_file="$ref_po_dir/$po.s1"
 732     if ! test -f "$cksum_file" ||
 733         ! test -f "$po_dir/$po.po" ||
 734         ! $SHA1SUM -c "$cksum_file" < "$new_po" > /dev/null 2>&1; then
 735       echo "$me: updated $po_dir/$po.po..."
 736       cp "$new_po" "$po_dir/$po.po" \
 737           && $SHA1SUM < "$new_po" > "$cksum_file" || return
 738     fi
 739   done
 740 }
 741
 742 case $SKIP_PO in
 743 '')
 744   if test -d po; then
 745     update_po_files po $package || exit
 746   fi
 747
 748   if test -d runtime-po; then
 749     update_po_files runtime-po $package-runtime || exit
 750   fi;;
 751 esac
 752
 753 symlink_to_dir()
 754 {
 755   src=$1/$2
 756   dst=${3-$2}
 757
 758   test -f "$src" && {
 759
 760     # If the destination directory doesn't exist, create it.
 761     # This is required at least for "lib/uniwidth/cjk.h".
 762     dst_dir=$(dirname "$dst")
 763     if ! test -d "$dst_dir"; then
 764       mkdir -p "$dst_dir"
 765
 766       # If we've just created a directory like lib/uniwidth,
 767       # tell version control system(s) it's ignorable.
 768       # FIXME: for now, this does only one level
 769       parent=$(dirname "$dst_dir")
 770       for dot_ig in x $vc_ignore; do
 771         test $dot_ig = x && continue
 772         ig=$parent/$dot_ig
 773         insert_vc_ignore $ig "${dst_dir##*/}"
 774       done
 775     fi
 776
 777     if $copy; then
 778       {
 779         test ! -h "$dst" || {
 780           echo "$me: rm -f $dst" &&
 781           rm -f "$dst"
 782         }
 783       } &&
 784       test -f "$dst" &&
 785       cmp -s "$src" "$dst" || {
 786         echo "$me: cp -fp $src $dst" &&
 787         cp -fp "$src" "$dst"
 788       }
 789     else
 790       # Leave any existing symlink alone, if it already points to the source,
 791       # so that broken build tools that care about symlink times
 792       # aren't confused into doing unnecessary builds.  Conversely, if the
 793       # existing symlink's timestamp is older than the source, make it afresh,
 794       # so that broken tools aren't confused into skipping needed builds.  See
 795       # <http://lists.gnu.org/archive/html/bug-gnulib/2011-05/msg00326.html>.
 796       test -h "$dst" &&
 797       src_ls=$(ls -diL "$src" 2>/dev/null) && set $src_ls && src_i=$1 &&
 798       dst_ls=$(ls -diL "$dst" 2>/dev/null) && set $dst_ls && dst_i=$1 &&
 799       test "$src_i" = "$dst_i" &&
 800       both_ls=$(ls -dt "$src" "$dst") &&
 801       test "X$both_ls" = "X$dst$nl$src" || {
 802         dot_dots=
 803         case $src in
 804         /*) ;;
 805         *)
 806           case /$dst/ in
 807           *//* | */../* | */./* | /*/*/*/*/*/)
 808              die "invalid symlink calculation: $src -> $dst";;
 809           /*/*/*/*/)    dot_dots=../../../;;
 810           /*/*/*/)      dot_dots=../../;;
 811           /*/*/)        dot_dots=../;;
 812           esac;;
 813         esac
 814
 815         echo "$me: ln -fs $dot_dots$src $dst" &&
 816         ln -fs "$dot_dots$src" "$dst"
 817       }
 818     fi
 819   }
 820 }
 821
 822 version_controlled_file() {
 823   parent=$1
 824   file=$2
 825   if test -d .git; then
 826     git rm -n "$file" > /dev/null 2>&1
 827   elif test -d .svn; then
 828     svn log -r HEAD "$file" > /dev/null 2>&1
 829   elif test -d CVS; then
 830     grep -F "/${file##*/}/" "$parent/CVS/Entries" 2>/dev/null |
 831              grep '^/[^/]*/[0-9]' > /dev/null
 832   else
 833     warn_ "no version control for $file?"
 834     false
 835   fi
 836 }
 837
 838 # NOTE: we have to be careful to run both autopoint and libtoolize
 839 # before gnulib-tool, since gnulib-tool is likely to provide newer
 840 # versions of files "installed" by these two programs.
 841 # Then, *after* gnulib-tool (see below), we have to be careful to
 842 # run autoreconf in such a way that it does not run either of these
 843 # two just-pre-run programs.
 844
 845 # Import from gettext.
 846 with_gettext=yes
 847 grep '^[         ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
 848     with_gettext=no
 849
 850 if test $with_gettext = yes || test $use_libtool = 1; then
 851
 852   tempbase=.bootstrap$$
 853   trap "rm -f $tempbase.0 $tempbase.1" 1 2 13 15
 854
 855   > $tempbase.0 > $tempbase.1 &&
 856   find . ! -type d -print | sort > $tempbase.0 || exit
 857
 858   if test $with_gettext = yes; then
 859     # Released autopoint has the tendency to install macros that have been
 860     # obsoleted in current gnulib, so run this before gnulib-tool.
 861     echo "$0: $AUTOPOINT --force"
 862     $AUTOPOINT --force || exit
 863   fi
 864
 865   # Autoreconf runs aclocal before libtoolize, which causes spurious
 866   # warnings if the initial aclocal is confused by the libtoolized
 867   # (or worse out-of-date) macro directory.
 868   # libtoolize 1.9b added the --install option; but we support back
 869   # to libtoolize 1.5.22, where the install action was default.
 870   if test $use_libtool = 1; then
 871     install=
 872     case $($LIBTOOLIZE --help) in
 873       *--install*) install=--install ;;
 874     esac
 875     echo "running: $LIBTOOLIZE $install --copy"
 876     $LIBTOOLIZE $install --copy
 877   fi
 878
 879   find . ! -type d -print | sort >$tempbase.1
 880   old_IFS=$IFS
 881   IFS=$nl
 882   for file in $(comm -13 $tempbase.0 $tempbase.1); do
 883     IFS=$old_IFS
 884     parent=${file%/*}
 885     version_controlled_file "$parent" "$file" || {
 886       for dot_ig in x $vc_ignore; do
 887         test $dot_ig = x && continue
 888         ig=$parent/$dot_ig
 889         insert_vc_ignore "$ig" "${file##*/}"
 890       done
 891     }
 892   done
 893   IFS=$old_IFS
 894
 895   rm -f $tempbase.0 $tempbase.1
 896   trap - 1 2 13 15
 897 fi
 898
 899 # Import from gnulib.
 900
 901 gnulib_tool_options="\
 902  --import\
 903  --no-changelog\
 904  --aux-dir $build_aux\
 905  --doc-base $doc_base\
 906  --lib $gnulib_name\
 907  --m4-base $m4_base/\
 908  --source-base $source_base/\
 909  --tests-base $tests_base\
 910  --local-dir $local_gl_dir\
 911  $gnulib_tool_option_extras\
 912 "
 913 if test $use_libtool = 1; then
 914   case "$gnulib_tool_options " in
 915     *' --libtool '*) ;;
 916     *) gnulib_tool_options="$gnulib_tool_options --libtool" ;;
 917   esac
 918 fi
 919 echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 920 $gnulib_tool $gnulib_tool_options --import $gnulib_modules \
 921   || die "gnulib-tool failed"
 922
 923 for file in $gnulib_files; do
 924   symlink_to_dir "$GNULIB_SRCDIR" $file \
 925     || die "failed to symlink $file"
 926 done
 927
 928 bootstrap_post_import_hook \
 929   || die "bootstrap_post_import_hook failed"
 930
 931 # Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
 932 # gnulib-populated directories.  Such .m4 files would cause aclocal to fail.
 933 # The following requires GNU find 4.2.3 or newer.  Considering the usual
 934 # portability constraints of this script, that may seem a very demanding
 935 # requirement, but it should be ok.  Ignore any failure, which is fine,
 936 # since this is only a convenience to help developers avoid the relatively
 937 # unusual case in which a symlinked-to .m4 file is git-removed from gnulib
 938 # between successive runs of this script.
 939 find "$m4_base" "$source_base" \
 940   -depth \( -name '*.m4' -o -name '*.[ch]' \) \
 941   -type l -xtype l -delete > /dev/null 2>&1
 942
 943 # Invoke autoreconf with --force --install to ensure upgrades of tools
 944 # such as ylwrap.
 945 AUTORECONFFLAGS="--verbose --install --force -I $m4_base $ACLOCAL_FLAGS"
 946
 947 # Some systems (RHEL 5) are using ancient autotools, for which the
 948 # --no-recursive option had not been invented.  Detect that lack and
 949 # omit the option when it's not supported.  FIXME in 2017: remove this
 950 # hack when RHEL 5 autotools are updated, or when they become irrelevant.
 951 case $($AUTORECONF --help) in
 952   *--no-recursive*) AUTORECONFFLAGS="$AUTORECONFFLAGS --no-recursive";;
 953 esac
 954
 955 # Tell autoreconf not to invoke autopoint or libtoolize; they were run above.
 956 echo "running: AUTOPOINT=true LIBTOOLIZE=true $AUTORECONF $AUTORECONFFLAGS"
 957 AUTOPOINT=true LIBTOOLIZE=true $AUTORECONF $AUTORECONFFLAGS \
 958   || die "autoreconf failed"
 959
 960 # Get some extra files from gnulib, overriding existing files.
 961 for file in $gnulib_extra_files; do
 962   case $file in
 963   */INSTALL) dst=INSTALL;;
 964   build-aux/*) dst=$build_aux/${file#build-aux/};;
 965   *) dst=$file;;
 966   esac
 967   symlink_to_dir "$GNULIB_SRCDIR" $file $dst \
 968     || die "failed to symlink $file"
 969 done
 970
 971 if test $with_gettext = yes; then
 972   # Create gettext configuration.
 973   echo "$0: Creating po/Makevars from po/Makevars.template ..."
 974   rm -f po/Makevars
 975   sed '
 976     /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/
 977     /^COPYRIGHT_HOLDER *=/s/=.*/= '"$COPYRIGHT_HOLDER"'/
 978     /^MSGID_BUGS_ADDRESS *=/s|=.*|= '"$MSGID_BUGS_ADDRESS"'|
 979     /^XGETTEXT_OPTIONS *=/{
 980       s/$/ \\/
 981       a\
 982           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
 983     }
 984   ' po/Makevars.template >po/Makevars \
 985     || die 'cannot generate po/Makevars'
 986
 987   # If the 'gettext' module is in use, grab the latest Makefile.in.in.
 988   # If only the 'gettext-h' module is in use, assume autopoint already
 989   # put the correct version of this file into place.
 990   case $gnulib_modules in
 991   *gettext-h*) ;;
 992   *gettext*)
 993     cp $GNULIB_SRCDIR/build-aux/po/Makefile.in.in po/Makefile.in.in \
 994       || die "cannot create po/Makefile.in.in"
 995     ;;
 996   esac
 997
 998   if test -d runtime-po; then
 999     # Similarly for runtime-po/Makevars, but not quite the same.
1000     rm -f runtime-po/Makevars
1001     sed '
1002       /^DOMAIN *=.*/s/=.*/= '"$package"'-runtime/
1003       /^subdir *=.*/s/=.*/= runtime-po/
1004       /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
1005       /^XGETTEXT_OPTIONS *=/{
1006         s/$/ \\/
1007         a\
1008             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
1009       }
1010     ' po/Makevars.template >runtime-po/Makevars \
1011     || die 'cannot generate runtime-po/Makevars'
1012
1013     # Copy identical files from po to runtime-po.
1014     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)
1015   fi
1016 fi
1017
1018 bootstrap_epilogue
1019
1020 echo "$0: done.  Now you can run './configure'."
1021
1022 # Local variables:
1023 # eval: (add-hook 'write-file-hooks 'time-stamp)
1024 # time-stamp-start: "scriptversion="
1025 # time-stamp-format: "%:y-%02m-%02d.%02H"
1026 # time-stamp-time-zone: "UTC0"
1027 # time-stamp-end: "; # UTC"
1028 # End: