bootstrap

   1 #! /bin/sh
   2 # Print a version string.
   3 scriptversion=2010-11-20.03; # UTC
   4
   5 # Bootstrap this package from checked-out sources.
   6
   7 # Copyright (C) 2003-2010 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 local_gl_dir=gl
  40
  41 # Temporary directory names.
  42 bt='._bootmp'
  43 bt_regex=`echo "$bt"| sed 's/\./[.]/g'`
  44 bt2=${bt}2
  45
  46 usage() {
  47   cat <<EOF
  48 Usage: $0 [OPTION]...
  49 Bootstrap this package from the checked-out sources.
  50
  51 Options:
  52  --gnulib-srcdir=DIRNAME  Specify the local directory where gnulib
  53                           sources reside.  Use this if you already
  54                           have gnulib sources on your machine, and
  55                           do not want to waste your bandwidth downloading
  56                           them again.  Defaults to \$GNULIB_SRCDIR.
  57  --bootstrap-sync         If this bootstrap script is not identical to
  58                           the version in the local gnulib sources,
  59                           update this script, and then restart it with
  60                           /bin/sh or the shell \$CONFIG_SHELL if
  61                           defined.
  62  --no-bootstrap-sync      Do not check whether bootstrap is out of sync.
  63  --copy                   Copy files instead of creating symbolic links.
  64  --force                  Attempt to bootstrap even if the sources seem
  65                           not to have been checked out.
  66  --skip-po                Do not download po files.
  67
  68 If the file $0.conf exists in the same directory as this script, its
  69 contents are read as shell variables to configure the bootstrap.
  70
  71 For build prerequisites, environment variables like \$AUTOCONF and \$AMTAR
  72 are honored.
  73
  74 Running without arguments will suffice in most cases.
  75 EOF
  76 }
  77
  78 # Configuration.
  79
  80 # Name of the Makefile.am
  81 gnulib_mk=gnulib.mk
  82
  83 # List of gnulib modules needed.
  84 gnulib_modules=
  85
  86 # Any gnulib files needed that are not in modules.
  87 gnulib_files=
  88
  89 # A function to be called to edit gnulib.mk right after it's created.
  90 # Override it via your own definition in bootstrap.conf.
  91 gnulib_mk_hook() { :; }
  92
  93 # A function to be called after everything else in this script.
  94 # Override it via your own definition in bootstrap.conf.
  95 bootstrap_epilogue() { :; }
  96
  97 # The command to download all .po files for a specified domain into
  98 # a specified directory.  Fill in the first %s is the domain name, and
  99 # the second with the destination directory.  Use rsync's -L and -r
 100 # options because the latest/%s directory and the .po files within are
 101 # all symlinks.
 102 po_download_command_format=\
 103 "rsync --delete --exclude '*.s1' -Lrtvz \
 104  'translationproject.org::tp/latest/%s/' '%s'"
 105
 106 extract_package_name='
 107   /^AC_INIT(/{
 108      /.*,.*,.*, */{
 109        s///
 110        s/[][]//g
 111        s/)$//
 112        p
 113        q
 114      }
 115      s/AC_INIT(\[*//
 116      s/]*,.*//
 117      s/^GNU //
 118      y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
 119      s/[^A-Za-z0-9_]/-/g
 120      p
 121   }
 122 '
 123 package=`sed -n "$extract_package_name" configure.ac` || exit
 124 gnulib_name=lib$package
 125
 126 build_aux=build-aux
 127 source_base=lib
 128 m4_base=m4
 129 doc_base=doc
 130 tests_base=tests
 131
 132 # Extra files from gnulib, which override files from other sources.
 133 gnulib_extra_files="
 134         $build_aux/install-sh
 135         $build_aux/missing
 136         $build_aux/mdate-sh
 137         $build_aux/texinfo.tex
 138         $build_aux/depcomp
 139         $build_aux/config.guess
 140         $build_aux/config.sub
 141         doc/INSTALL
 142 "
 143
 144 # Additional gnulib-tool options to use.  Use "\newline" to break lines.
 145 gnulib_tool_option_extras=
 146
 147 # Other locale categories that need message catalogs.
 148 EXTRA_LOCALE_CATEGORIES=
 149
 150 # Additional xgettext options to use.  Use "\\\newline" to break lines.
 151 XGETTEXT_OPTIONS='\\\
 152  --flag=_:1:pass-c-format\\\
 153  --flag=N_:1:pass-c-format\\\
 154  --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 155 '
 156
 157 # Package bug report address and copyright holder for gettext files
 158 COPYRIGHT_HOLDER='Free Software Foundation, Inc.'
 159 MSGID_BUGS_ADDRESS=bug-$package@gnu.org
 160
 161 # Files we don't want to import.
 162 excluded_files=
 163
 164 # File that should exist in the top directory of a checked out hierarchy,
 165 # but not in a distribution tarball.
 166 checkout_only_file=README-hacking
 167
 168 # Whether to use copies instead of symlinks.
 169 copy=false
 170
 171 # Set this to '.cvsignore .gitignore' in bootstrap.conf if you want
 172 # those files to be generated in directories like lib/, m4/, and po/.
 173 # Or set it to 'auto' to make this script select which to use based
 174 # on which version control system (if any) is used in the source directory.
 175 vc_ignore=auto
 176
 177 # Set this to true in bootstrap.conf to enable --bootstrap-sync by
 178 # default.
 179 bootstrap_sync=false
 180
 181 # find_tool ENVVAR NAMES...
 182 # -------------------------
 183 # Search for a required program.  Use the value of ENVVAR, if set,
 184 # otherwise find the first of the NAMES that can be run (i.e.,
 185 # supports --version).  If found, set ENVVAR to the program name,
 186 # die otherwise.
 187 find_tool ()
 188 {
 189   find_tool_envvar=$1
 190   shift
 191   find_tool_names=$@
 192   eval "find_tool_res=\$$find_tool_envvar"
 193   if test x"$find_tool_res" = x; then
 194     for i
 195     do
 196       if ($i --version </dev/null) >/dev/null 2>&1; then
 197        find_tool_res=$i
 198        break
 199       fi
 200     done
 201   else
 202     find_tool_error_prefix="\$$find_tool_envvar: "
 203   fi
 204   if test x"$find_tool_res" = x; then
 205     echo >&2 "$0: one of these is required: $find_tool_names"
 206     exit 1
 207   fi
 208   ($find_tool_res --version </dev/null) >/dev/null 2>&1 || {
 209     echo >&2 "$0: ${find_tool_error_prefix}cannot run $find_tool_res --version"
 210     exit 1
 211   }
 212   eval "$find_tool_envvar=\$find_tool_res"
 213   eval "export $find_tool_envvar"
 214 }
 215
 216 # Find sha1sum, named gsha1sum on MacPorts, and shasum on MacOS 10.6.
 217 find_tool SHA1SUM sha1sum gsha1sum shasum
 218
 219 # Override the default configuration, if necessary.
 220 # Make sure that bootstrap.conf is sourced from the current directory
 221 # if we were invoked as "sh bootstrap".
 222 case "$0" in
 223   */*) test -r "$0.conf" && . "$0.conf" ;;
 224   *) test -r "$0.conf" && . ./"$0.conf" ;;
 225 esac
 226
 227
 228 if test "$vc_ignore" = auto; then
 229   vc_ignore=
 230   test -d .git && vc_ignore=.gitignore
 231   test -d CVS && vc_ignore="$vc_ignore .cvsignore"
 232 fi
 233
 234 # Translate configuration into internal form.
 235
 236 # Parse options.
 237
 238 for option
 239 do
 240   case $option in
 241   --help)
 242     usage
 243     exit;;
 244   --gnulib-srcdir=*)
 245     GNULIB_SRCDIR=`expr "X$option" : 'X--gnulib-srcdir=\(.*\)'`;;
 246   --skip-po)
 247     SKIP_PO=t;;
 248   --force)
 249     checkout_only_file=;;
 250   --copy)
 251     copy=true;;
 252   --bootstrap-sync)
 253     bootstrap_sync=true;;
 254   --no-bootstrap-sync)
 255     bootstrap_sync=false;;
 256   *)
 257     echo >&2 "$0: $option: unknown option"
 258     exit 1;;
 259   esac
 260 done
 261
 262 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
 263   echo "$0: Bootstrapping from a non-checked-out distribution is risky." >&2
 264   exit 1
 265 fi
 266
 267 # If $STR is not already on a line by itself in $FILE, insert it,
 268 # sorting the new contents of the file and replacing $FILE with the result.
 269 insert_sorted_if_absent() {
 270   file=$1
 271   str=$2
 272   test -f $file || touch $file
 273   echo "$str" | sort -u - $file | cmp - $file > /dev/null \
 274     || echo "$str" | sort -u - $file -o $file \
 275     || exit 1
 276 }
 277
 278 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
 279 # insert_sorted_if_absent.
 280 insert_vc_ignore() {
 281   vc_ignore_file="$1"
 282   pattern="$2"
 283   case $vc_ignore_file in
 284   *.gitignore)
 285     # A .gitignore entry that does not start with `/' applies
 286     # recursively to subdirectories, so prepend `/' to every
 287     # .gitignore entry.
 288     pattern=`echo "$pattern" | sed s,^,/,`;;
 289   esac
 290   insert_sorted_if_absent "$vc_ignore_file" "$pattern"
 291 }
 292
 293 # Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
 294 found_aux_dir=no
 295 grep '^[         ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
 296     >/dev/null && found_aux_dir=yes
 297 grep '^[         ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
 298     >/dev/null && found_aux_dir=yes
 299 if test $found_aux_dir = no; then
 300   echo "$0: expected line not found in configure.ac. Add the following:" >&2
 301   echo "  AC_CONFIG_AUX_DIR([$build_aux])" >&2
 302   exit 1
 303 fi
 304
 305 # If $build_aux doesn't exist, create it now, otherwise some bits
 306 # below will malfunction.  If creating it, also mark it as ignored.
 307 if test ! -d $build_aux; then
 308   mkdir $build_aux
 309   for dot_ig in x $vc_ignore; do
 310     test $dot_ig = x && continue
 311     insert_vc_ignore $dot_ig $build_aux
 312   done
 313 fi
 314
 315 # Note this deviates from the version comparison in automake
 316 # in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a
 317 # but this should suffice as we won't be specifying old
 318 # version formats or redundant trailing .0 in bootstrap.conf.
 319 # If we did want full compatibility then we should probably
 320 # use m4_version_compare from autoconf.
 321 sort_ver() { # sort -V is not generally available
 322   ver1="$1"
 323   ver2="$2"
 324
 325   # split on '.' and compare each component
 326   i=1
 327   while : ; do
 328     p1=$(echo "$ver1" | cut -d. -f$i)
 329     p2=$(echo "$ver2" | cut -d. -f$i)
 330     if [ ! "$p1" ]; then
 331       echo "$1 $2"
 332       break
 333     elif [ ! "$p2" ]; then
 334       echo "$2 $1"
 335       break
 336     elif [ ! "$p1" = "$p2" ]; then
 337       if [ "$p1" -gt "$p2" ] 2>/dev/null; then # numeric comparison
 338         echo "$2 $1"
 339       elif [ "$p2" -gt "$p1" ] 2>/dev/null; then # numeric comparison
 340         echo "$1 $2"
 341       else # numeric, then lexicographic comparison
 342         lp=$(printf "$p1\n$p2\n" | LANG=C sort -n | tail -n1)
 343         if [ "$lp" = "$p2" ]; then
 344           echo "$1 $2"
 345         else
 346           echo "$2 $1"
 347         fi
 348       fi
 349       break
 350     fi
 351     i=$(($i+1))
 352   done
 353 }
 354
 355 get_version() {
 356   app=$1
 357
 358   $app --version >/dev/null 2>&1 || return 1
 359
 360   $app --version 2>&1 |
 361   sed -n '# Move version to start of line.
 362           s/.*[v ]\([0-9]\)/\1/
 363
 364           # Skip lines that do not start with version.
 365           /^[0-9]/!d
 366
 367           # Remove characters after the version.
 368           s/[^.a-z0-9-].*//
 369
 370           # The first component must be digits only.
 371           s/^\([0-9]*\)[a-z-].*/\1/
 372
 373           #the following essentially does s/5.005/5.5/
 374           s/\.0*\([1-9]\)/.\1/g
 375           p
 376           q'
 377 }
 378
 379 check_versions() {
 380   ret=0
 381
 382   while read app req_ver; do
 383     # We only need libtoolize from the libtool package.
 384     if test "$app" = libtool; then
 385       app=libtoolize
 386     fi
 387     # Honor $APP variables ($TAR, $AUTOCONF, etc.)
 388     appvar=`echo $app | tr '[a-z]-' '[A-Z]_'`
 389     test "$appvar" = TAR && appvar=AMTAR
 390     eval "app=\${$appvar-$app}"
 391     inst_ver=$(get_version $app)
 392     if [ ! "$inst_ver" ]; then
 393       echo "Error: '$app' not found" >&2
 394       ret=1
 395     elif [ ! "$req_ver" = "-" ]; then
 396       latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)
 397       if [ ! "$latest_ver" = "$inst_ver" ]; then
 398         echo "Error: '$app' version == $inst_ver is too old" >&2
 399         echo "       '$app' version >= $req_ver is required" >&2
 400         ret=1
 401       fi
 402     fi
 403   done
 404
 405   return $ret
 406 }
 407
 408 print_versions() {
 409   echo "Program    Min_version"
 410   echo "----------------------"
 411   printf %s "$buildreq"
 412   echo "----------------------"
 413   # can't depend on column -t
 414 }
 415
 416 use_libtool=0
 417 # We'd like to use grep -E, to see if any of LT_INIT,
 418 # AC_PROG_LIBTOOL, AM_PROG_LIBTOOL is used in configure.ac,
 419 # but that's not portable enough (e.g., for Solaris).
 420 grep '^[         ]*A[CM]_PROG_LIBTOOL' configure.ac >/dev/null \
 421   && use_libtool=1
 422 grep '^[         ]*LT_INIT' configure.ac >/dev/null \
 423   && use_libtool=1
 424 if test $use_libtool = 1; then
 425   find_tool LIBTOOLIZE glibtoolize libtoolize
 426 fi
 427
 428 if ! printf "$buildreq" | check_versions; then
 429   echo >&2
 430   if test -f README-prereq; then
 431     echo "See README-prereq for how to get the prerequisite programs" >&2
 432   else
 433     echo "Please install the prerequisite programs" >&2
 434   fi
 435   exit 1
 436 fi
 437
 438 echo "$0: Bootstrapping from checked-out $package sources..."
 439
 440 # See if we can use gnulib's git-merge-changelog merge driver.
 441 if test -d .git && (git --version) >/dev/null 2>/dev/null ; then
 442   if git config merge.merge-changelog.driver >/dev/null ; then
 443     :
 444   elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then
 445     echo "initializing git-merge-changelog driver"
 446     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
 447     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
 448   else
 449     echo "consider installing git-merge-changelog from gnulib"
 450   fi
 451 fi
 452
 453
 454 cleanup_gnulib() {
 455   status=$?
 456   rm -fr "$gnulib_path"
 457   exit $status
 458 }
 459
 460 git_modules_config () {
 461   test -f .gitmodules && git config --file .gitmodules "$@"
 462 }
 463
 464 gnulib_path=`git_modules_config submodule.gnulib.path`
 465 : ${gnulib_path=gnulib}
 466
 467 # Get gnulib files.
 468
 469 case ${GNULIB_SRCDIR--} in
 470 -)
 471   if git_modules_config submodule.gnulib.url >/dev/null; then
 472     echo "$0: getting gnulib files..."
 473     git submodule init || exit $?
 474     git submodule update || exit $?
 475
 476   elif [ ! -d "$gnulib_path" ]; then
 477     echo "$0: getting gnulib files..."
 478
 479     trap cleanup_gnulib 1 2 13 15
 480
 481     shallow=
 482     git clone -h 2>&1 | grep -- --depth > /dev/null && shallow='--depth 2'
 483     git clone $shallow git://git.sv.gnu.org/gnulib "$gnulib_path" ||
 484       cleanup_gnulib
 485
 486     trap - 1 2 13 15
 487   fi
 488   GNULIB_SRCDIR=$gnulib_path
 489   ;;
 490 *)
 491   # Use GNULIB_SRCDIR as a reference.
 492   if test -d "$GNULIB_SRCDIR"/.git && \
 493         git_modules_config submodule.gnulib.url >/dev/null; then
 494     echo "$0: getting gnulib files..."
 495     if git submodule -h|grep -- --reference > /dev/null; then
 496       # Prefer the one-liner available in git 1.6.4 or newer.
 497       git submodule update --init --reference "$GNULIB_SRCDIR" \
 498         "$gnulib_path" || exit $?
 499     else
 500       # This fallback allows at least git 1.5.5.
 501       if test -f "$gnulib_path"/gnulib-tool; then
 502         # Since file already exists, assume submodule init already complete.
 503         git submodule update || exit $?
 504       else
 505         # Older git can't clone into an empty directory.
 506         rmdir "$gnulib_path" 2>/dev/null
 507         git clone --reference "$GNULIB_SRCDIR" \
 508           "$(git_modules_config submodule.gnulib.url)" "$gnulib_path" \
 509           && git submodule init && git submodule update \
 510           || exit $?
 511       fi
 512     fi
 513     GNULIB_SRCDIR=$gnulib_path
 514   fi
 515   ;;
 516 esac
 517
 518 if $bootstrap_sync; then
 519   cmp -s "$0" "$GNULIB_SRCDIR/build-aux/bootstrap" || {
 520     echo "$0: updating bootstrap and restarting..."
 521     exec sh -c \
 522       'cp "$1" "$2" && shift && exec "${CONFIG_SHELL-/bin/sh}" "$@"' \
 523       -- "$GNULIB_SRCDIR/build-aux/bootstrap" \
 524       "$0" "$@" --no-bootstrap-sync
 525   }
 526 fi
 527
 528 gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 529 <$gnulib_tool || exit
 530
 531 # Get translations.
 532
 533 download_po_files() {
 534   subdir=$1
 535   domain=$2
 536   echo "$0: getting translations into $subdir for $domain..."
 537   cmd=`printf "$po_download_command_format" "$domain" "$subdir"`
 538   eval "$cmd"
 539 }
 540
 541 # Mirror .po files to $po_dir/.reference and copy only the new
 542 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.
 543 # Note po files that exist locally only are left in $po_dir but will
 544 # not be included in LINGUAS and hence will not be distributed.
 545 update_po_files() {
 546   # Directory containing primary .po files.
 547   # Overwrite them only when we're sure a .po file is new.
 548   po_dir=$1
 549   domain=$2
 550
 551   # Mirror *.po files into this dir.
 552   # Usually contains *.s1 checksum files.
 553   ref_po_dir="$po_dir/.reference"
 554
 555   test -d $ref_po_dir || mkdir $ref_po_dir || return
 556   download_po_files $ref_po_dir $domain \
 557     && ls "$ref_po_dir"/*.po 2>/dev/null |
 558       sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS" || return
 559
 560   langs=`cd $ref_po_dir && echo *.po|sed 's/\.po//g'`
 561   test "$langs" = '*' && langs=x
 562   for po in $langs; do
 563     case $po in x) continue;; esac
 564     new_po="$ref_po_dir/$po.po"
 565     cksum_file="$ref_po_dir/$po.s1"
 566     if ! test -f "$cksum_file" ||
 567         ! test -f "$po_dir/$po.po" ||
 568         ! $SHA1SUM -c --status "$cksum_file" \
 569             < "$new_po" > /dev/null; then
 570       echo "updated $po_dir/$po.po..."
 571       cp "$new_po" "$po_dir/$po.po" \
 572           && $SHA1SUM < "$new_po" > "$cksum_file"
 573     fi
 574   done
 575 }
 576
 577 case $SKIP_PO in
 578 '')
 579   if test -d po; then
 580     update_po_files po $package || exit
 581   fi
 582
 583   if test -d runtime-po; then
 584     update_po_files runtime-po $package-runtime || exit
 585   fi;;
 586 esac
 587
 588 symlink_to_dir()
 589 {
 590   src=$1/$2
 591   dst=${3-$2}
 592
 593   test -f "$src" && {
 594
 595     # If the destination directory doesn't exist, create it.
 596     # This is required at least for "lib/uniwidth/cjk.h".
 597     dst_dir=`dirname "$dst"`
 598     if ! test -d "$dst_dir"; then
 599       mkdir -p "$dst_dir"
 600
 601       # If we've just created a directory like lib/uniwidth,
 602       # tell version control system(s) it's ignorable.
 603       # FIXME: for now, this does only one level
 604       parent=`dirname "$dst_dir"`
 605       for dot_ig in x $vc_ignore; do
 606         test $dot_ig = x && continue
 607         ig=$parent/$dot_ig
 608         insert_vc_ignore $ig `echo "$dst_dir"|sed 's,.*/,,'`
 609       done
 610     fi
 611
 612     if $copy; then
 613       {
 614         test ! -h "$dst" || {
 615           echo "$0: rm -f $dst" &&
 616           rm -f "$dst"
 617         }
 618       } &&
 619       test -f "$dst" &&
 620       cmp -s "$src" "$dst" || {
 621         echo "$0: cp -fp $src $dst" &&
 622         cp -fp "$src" "$dst"
 623       }
 624     else
 625       test -h "$dst" &&
 626       src_ls=`ls -diL "$src" 2>/dev/null` && set $src_ls && src_i=$1 &&
 627       dst_ls=`ls -diL "$dst" 2>/dev/null` && set $dst_ls && dst_i=$1 &&
 628       test "$src_i" = "$dst_i" || {
 629         dot_dots=
 630         case $src in
 631         /*) ;;
 632         *)
 633           case /$dst/ in
 634           *//* | */../* | */./* | /*/*/*/*/*/)
 635              echo >&2 "$0: invalid symlink calculation: $src -> $dst"
 636              exit 1;;
 637           /*/*/*/*/)    dot_dots=../../../;;
 638           /*/*/*/)      dot_dots=../../;;
 639           /*/*/)        dot_dots=../;;
 640           esac;;
 641         esac
 642
 643         echo "$0: ln -fs $dot_dots$src $dst" &&
 644         ln -fs "$dot_dots$src" "$dst"
 645       }
 646     fi
 647   }
 648 }
 649
 650 cp_mark_as_generated()
 651 {
 652   cp_src=$1
 653   cp_dst=$2
 654
 655   if cmp -s "$cp_src" "$GNULIB_SRCDIR/$cp_dst"; then
 656     symlink_to_dir "$GNULIB_SRCDIR" "$cp_dst"
 657   elif cmp -s "$cp_src" "$local_gl_dir/$cp_dst"; then
 658     symlink_to_dir $local_gl_dir "$cp_dst"
 659   else
 660     case $cp_dst in
 661       *.[ch])             c1='/* '; c2=' */';;
 662       *.texi)             c1='@c '; c2=     ;;
 663       *.m4|*/Make*|Make*) c1='# ' ; c2=     ;;
 664       *)                  c1=     ; c2=     ;;
 665     esac
 666
 667     # If the destination directory doesn't exist, create it.
 668     # This is required at least for "lib/uniwidth/cjk.h".
 669     dst_dir=`dirname "$cp_dst"`
 670     test -d "$dst_dir" || mkdir -p "$dst_dir"
 671
 672     if test -z "$c1"; then
 673       cmp -s "$cp_src" "$cp_dst" || {
 674         # Copy the file first to get proper permissions if it
 675         # doesn't already exist.  Then overwrite the copy.
 676         echo "$0: cp -f $cp_src $cp_dst" &&
 677         rm -f "$cp_dst" &&
 678         cp "$cp_src" "$cp_dst-t" &&
 679         sed "s!$bt_regex/!!g" "$cp_src" > "$cp_dst-t" &&
 680         mv -f "$cp_dst-t" "$cp_dst"
 681       }
 682     else
 683       # Copy the file first to get proper permissions if it
 684       # doesn't already exist.  Then overwrite the copy.
 685       cp "$cp_src" "$cp_dst-t" &&
 686       (
 687         echo "$c1-*- buffer-read-only: t -*- vi: set ro:$c2" &&
 688         echo "${c1}DO NOT EDIT! GENERATED AUTOMATICALLY!$c2" &&
 689         sed "s!$bt_regex/!!g" "$cp_src"
 690       ) > $cp_dst-t &&
 691       if cmp -s "$cp_dst-t" "$cp_dst"; then
 692         rm -f "$cp_dst-t"
 693       else
 694         echo "$0: cp $cp_src $cp_dst # with edits" &&
 695         mv -f "$cp_dst-t" "$cp_dst"
 696       fi
 697     fi
 698   fi
 699 }
 700
 701 version_controlled_file() {
 702   dir=$1
 703   file=$2
 704   found=no
 705   if test -d CVS; then
 706     grep -F "/$file/" $dir/CVS/Entries 2>/dev/null |
 707              grep '^/[^/]*/[0-9]' > /dev/null && found=yes
 708   elif test -d .git; then
 709     git rm -n "$dir/$file" > /dev/null 2>&1 && found=yes
 710   elif test -d .svn; then
 711     svn log -r HEAD "$dir/$file" > /dev/null 2>&1 && found=yes
 712   else
 713     echo "$0: no version control for $dir/$file?" >&2
 714   fi
 715   test $found = yes
 716 }
 717
 718 slurp() {
 719   for dir in . `(cd $1 && find * -type d -print)`; do
 720     copied=
 721     sep=
 722     for file in `ls -a $1/$dir`; do
 723       case $file in
 724       .|..) continue;;
 725       # FIXME: should all file names starting with "." be ignored?
 726       .*) continue;;
 727       esac
 728       test -d $1/$dir/$file && continue
 729       for excluded_file in $excluded_files; do
 730         test "$dir/$file" = "$excluded_file" && continue 2
 731       done
 732       if test $file = Makefile.am && test "X$gnulib_mk" != XMakefile.am; then
 733         copied=$copied${sep}$gnulib_mk; sep=$nl
 734         remove_intl='/^[^#].*\/intl/s/^/#/;'"s!$bt_regex/!!g"
 735         sed "$remove_intl" $1/$dir/$file |
 736         cmp - $dir/$gnulib_mk > /dev/null || {
 737           echo "$0: Copying $1/$dir/$file to $dir/$gnulib_mk ..." &&
 738           rm -f $dir/$gnulib_mk &&
 739           sed "$remove_intl" $1/$dir/$file >$dir/$gnulib_mk &&
 740           gnulib_mk_hook $dir/$gnulib_mk
 741         }
 742       elif { test "${2+set}" = set && test -r $2/$dir/$file; } ||
 743            version_controlled_file $dir $file; then
 744         echo "$0: $dir/$file overrides $1/$dir/$file"
 745       else
 746         copied=$copied$sep$file; sep=$nl
 747         if test $file = gettext.m4; then
 748           echo "$0: patching m4/gettext.m4 to remove need for intl/* ..."
 749           rm -f $dir/$file
 750           sed '
 751             /^AC_DEFUN(\[AM_INTL_SUBDIR],/,/^]/c\
 752               AC_DEFUN([AM_INTL_SUBDIR], [])
 753             /^AC_DEFUN(\[gt_INTL_SUBDIR_CORE],/,/^]/c\
 754               AC_DEFUN([gt_INTL_SUBDIR_CORE], [])
 755             $a\
 756               AC_DEFUN([gl_LOCK_EARLY], [])
 757           ' $1/$dir/$file >$dir/$file
 758         else
 759           cp_mark_as_generated $1/$dir/$file $dir/$file
 760         fi
 761       fi || exit
 762     done
 763
 764     for dot_ig in x $vc_ignore; do
 765       test $dot_ig = x && continue
 766       ig=$dir/$dot_ig
 767       if test -n "$copied"; then
 768         insert_vc_ignore $ig "$copied"
 769         # If an ignored file name ends with .in.h, then also add
 770         # the name with just ".h".  Many gnulib headers are generated,
 771         # e.g., stdint.in.h -> stdint.h, dirent.in.h ->..., etc.
 772         # Likewise for .gperf -> .h, .y -> .c, and .sin -> .sed
 773         f=`echo "$copied" |
 774           sed '
 775             s/\.in\.h$/.h/
 776             s/\.sin$/.sed/
 777             s/\.y$/.c/
 778             s/\.gperf$/.h/
 779           '
 780         `
 781         insert_vc_ignore $ig "$f"
 782
 783         # For files like sys_stat.in.h and sys_time.in.h, record as
 784         # ignorable the directory we might eventually create: sys/.
 785         f=`echo "$copied"|sed 's/sys_.*\.in\.h$/sys/'`
 786         insert_vc_ignore $ig "$f"
 787       fi
 788     done
 789   done
 790 }
 791
 792
 793 # Create boot temporary directories to import from gnulib and gettext.
 794 rm -fr $bt $bt2 &&
 795 mkdir $bt $bt2 || exit
 796
 797 # Import from gnulib.
 798
 799 gnulib_tool_options="\
 800  --import\
 801  --no-changelog\
 802  --aux-dir $bt/$build_aux\
 803  --doc-base $bt/$doc_base\
 804  --lib $gnulib_name\
 805  --m4-base $bt/$m4_base/\
 806  --source-base $bt/$source_base/\
 807  --tests-base $bt/$tests_base\
 808  --local-dir $local_gl_dir\
 809  $gnulib_tool_option_extras\
 810 "
 811 if test $use_libtool = 1; then
 812   case "$gnulib_tool_options " in
 813     *' --libtool '*) ;;
 814     *) gnulib_tool_options="$gnulib_tool_options --libtool" ;;
 815   esac
 816 fi
 817 echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 818 $gnulib_tool $gnulib_tool_options --import $gnulib_modules &&
 819 slurp $bt || exit
 820
 821 for file in $gnulib_files; do
 822   symlink_to_dir "$GNULIB_SRCDIR" $file || exit
 823 done
 824
 825
 826 # Import from gettext.
 827 with_gettext=yes
 828 grep '^[         ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
 829     with_gettext=no
 830
 831 if test $with_gettext = yes; then
 832   echo "$0: (cd $bt2; ${AUTOPOINT-autopoint}) ..."
 833   cp configure.ac $bt2 &&
 834   (cd $bt2 && ${AUTOPOINT-autopoint} && rm configure.ac) &&
 835   slurp $bt2 $bt || exit
 836 fi
 837 rm -fr $bt $bt2 || exit
 838
 839 # Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
 840 # gnulib-populated directories.  Such .m4 files would cause aclocal to fail.
 841 # The following requires GNU find 4.2.3 or newer.  Considering the usual
 842 # portability constraints of this script, that may seem a very demanding
 843 # requirement, but it should be ok.  Ignore any failure, which is fine,
 844 # since this is only a convenience to help developers avoid the relatively
 845 # unusual case in which a symlinked-to .m4 file is git-removed from gnulib
 846 # between successive runs of this script.
 847 find "$m4_base" "$source_base" \
 848   -depth \( -name '*.m4' -o -name '*.[ch]' \) \
 849   -type l -xtype l -delete > /dev/null 2>&1
 850
 851 # Reconfigure, getting other files.
 852
 853 # Skip autoheader if it's not needed.
 854 grep -E '^[      ]*AC_CONFIG_HEADERS?\>' configure.ac >/dev/null ||
 855   AUTOHEADER=true
 856
 857 for command in \
 858   libtool \
 859   "${ACLOCAL-aclocal} --force -I m4 $ACLOCAL_FLAGS" \
 860   "${AUTOCONF-autoconf} --force" \
 861   "${AUTOHEADER-autoheader} --force" \
 862   "${AUTOMAKE-automake} --add-missing --copy --force-missing"
 863 do
 864   if test "$command" = libtool; then
 865     test $use_libtool = 0 \
 866       && continue
 867     command="${LIBTOOLIZE-libtoolize} -c -f"
 868   fi
 869   echo "$0: $command ..."
 870   $command || exit
 871 done
 872
 873
 874 # Get some extra files from gnulib, overriding existing files.
 875 for file in $gnulib_extra_files; do
 876   case $file in
 877   */INSTALL) dst=INSTALL;;
 878   build-aux/*) dst=$build_aux/`expr "$file" : 'build-aux/\(.*\)'`;;
 879   *) dst=$file;;
 880   esac
 881   symlink_to_dir "$GNULIB_SRCDIR" $file $dst || exit
 882 done
 883
 884 if test $with_gettext = yes; then
 885   # Create gettext configuration.
 886   echo "$0: Creating po/Makevars from po/Makevars.template ..."
 887   rm -f po/Makevars
 888   sed '
 889     /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/
 890     /^COPYRIGHT_HOLDER *=/s/=.*/= '"$COPYRIGHT_HOLDER"'/
 891     /^MSGID_BUGS_ADDRESS *=/s|=.*|= '"$MSGID_BUGS_ADDRESS"'|
 892     /^XGETTEXT_OPTIONS *=/{
 893       s/$/ \\/
 894       a\
 895           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
 896     }
 897   ' po/Makevars.template >po/Makevars || exit 1
 898
 899   if test -d runtime-po; then
 900     # Similarly for runtime-po/Makevars, but not quite the same.
 901     rm -f runtime-po/Makevars
 902     sed '
 903       /^DOMAIN *=.*/s/=.*/= '"$package"'-runtime/
 904       /^subdir *=.*/s/=.*/= runtime-po/
 905       /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
 906       /^XGETTEXT_OPTIONS *=/{
 907         s/$/ \\/
 908         a\
 909             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
 910       }
 911     ' po/Makevars.template >runtime-po/Makevars || exit 1
 912
 913     # Copy identical files from po to runtime-po.
 914     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)
 915   fi
 916 fi
 917
 918 bootstrap_epilogue
 919
 920 echo "$0: done.  Now you can run './configure'."
 921
 922 # Local variables:
 923 # eval: (add-hook 'write-file-hooks 'time-stamp)
 924 # time-stamp-start: "scriptversion="
 925 # time-stamp-format: "%:y-%02m-%02d.%02H"
 926 # time-stamp-time-zone: "UTC"
 927 # time-stamp-end: "; # UTC"
 928 # End: