bootstrap

   1 #! /bin/sh
   2
   3 # Bootstrap this package from checked-out sources.
   4
   5 # Copyright (C) 2003-2010 Free Software Foundation, Inc.
   6
   7 # This program is free software: you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 # Written by Paul Eggert.
  21
  22 nl='
  23 '
  24
  25 # Ensure file names are sorted consistently across platforms.
  26 # Also, ensure diagnostics are in English, e.g., "wget --help" below.
  27 LC_ALL=C
  28 export LC_ALL
  29
  30 local_gl_dir=gl
  31
  32 # Temporary directory names.
  33 bt='._bootmp'
  34 bt_regex=`echo "$bt"| sed 's/\./[.]/g'`
  35 bt2=${bt}2
  36
  37 usage() {
  38   cat <<EOF
  39 Usage: $0 [OPTION]...
  40 Bootstrap this package from the checked-out sources.
  41
  42 Options:
  43  --gnulib-srcdir=DIRNAME  Specify the local directory where gnulib
  44                           sources reside.  Use this if you already
  45                           have gnulib sources on your machine, and
  46                           do not want to waste your bandwidth downloading
  47                           them again.
  48  --copy                   Copy files instead of creating symbolic links.
  49  --force                  Attempt to bootstrap even if the sources seem
  50                           not to have been checked out.
  51  --skip-po                Do not download po files.
  52  --cvs-user=USERNAME      Set the username to use when checking out
  53                           sources from the gnulib repository.
  54
  55 If the file bootstrap.conf exists in the current working directory, its
  56 contents are read as shell variables to configure the bootstrap.
  57
  58 Running without arguments will suffice in most cases.
  59 EOF
  60 }
  61
  62 # Configuration.
  63
  64 # Name of the Makefile.am
  65 gnulib_mk=gnulib.mk
  66
  67 # List of gnulib modules needed.
  68 gnulib_modules=
  69
  70 # Any gnulib files needed that are not in modules.
  71 gnulib_files=
  72
  73 # The command to download all .po files for a specified domain into
  74 # a specified directory.  Fill in the first %s is the domain name, and
  75 # the second with the destination directory.  Use rsync's -L and -r
  76 # options because the latest/%s directory and the .po files within are
  77 # all symlinks.
  78 po_download_command_format=\
  79 "rsync -Lrtvz 'translationproject.org::tp/latest/%s/' '%s'"
  80
  81 extract_package_name='
  82   /^AC_INIT(/{
  83      /.*,.*,.*,/{
  84        s///
  85        s/[][]//g
  86        p
  87        q
  88      }
  89      s/AC_INIT(\[*//
  90      s/]*,.*//
  91      s/^GNU //
  92      y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
  93      s/[^A-Za-z0-9_]/-/g
  94      p
  95   }
  96 '
  97 package=`sed -n "$extract_package_name" configure.ac` || exit
  98 gnulib_name=lib$package
  99
 100 build_aux=build-aux
 101 # Extra files from gnulib, which override files from other sources.
 102 gnulib_extra_files="
 103         $build_aux/install-sh
 104         $build_aux/missing
 105         $build_aux/mdate-sh
 106         $build_aux/texinfo.tex
 107         $build_aux/depcomp
 108         $build_aux/config.guess
 109         $build_aux/config.sub
 110         doc/INSTALL
 111 "
 112
 113 # Additional gnulib-tool options to use.  Use "\newline" to break lines.
 114 gnulib_tool_option_extras=
 115
 116 # Other locale categories that need message catalogs.
 117 EXTRA_LOCALE_CATEGORIES=
 118
 119 # Additional xgettext options to use.  Use "\\\newline" to break lines.
 120 XGETTEXT_OPTIONS='\\\
 121  --flag=_:1:pass-c-format\\\
 122  --flag=N_:1:pass-c-format\\\
 123  --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 124 '
 125
 126 # Files we don't want to import.
 127 excluded_files=
 128
 129 # File that should exist in the top directory of a checked out hierarchy,
 130 # but not in a distribution tarball.
 131 checkout_only_file=HACKING
 132
 133 # Whether to use copies instead of symlinks.
 134 copy=false
 135
 136 # Set this to '.cvsignore .gitignore' in bootstrap.conf if you want
 137 # those files to be generated in directories like lib/, m4/, and po/.
 138 # Or set it to 'auto' to make this script select which to use based
 139 # on which version control system (if any) is used in the source directory.
 140 vc_ignore=auto
 141
 142 # find_tool ENVVAR NAMES...
 143 # -------------------------
 144 # Look for some needed program.  Use the value of the ENVVAR if set,
 145 # otherwise look for the first of the NAMES that can be run (i.e.,
 146 # supports --version).  If found, set ENVVAR to the program name,
 147 # die otherwise.
 148 find_tool ()
 149 {
 150   # Find sha1sum, named gsha1sum on MacPorts.
 151   find_tool_envvar=$1
 152   shift
 153   find_tool_names=$@
 154   eval "find_tool_res=\$$find_tool_envvar"
 155   if test x"$find_tool_res" = x; then
 156     for i
 157     do
 158       if ($i --version </dev/null) >/dev/null 2>&1; then
 159        find_tool_res=$i
 160        break
 161       fi
 162     done
 163   else
 164     find_tool_error_prefix="\$$find_tool_envvar: "
 165   fi
 166   if test x"$find_tool_res" = x; then
 167     echo >&2 "$0: one of these is required: $find_tool_names"
 168     exit 1
 169   fi
 170   ($find_tool_res --version </dev/null) >/dev/null 2>&1 || {
 171     echo >&2 "$0: ${find_tool_error_prefix}cannot run $find_tool_res --version"
 172     exit 1
 173   }
 174   eval "$find_tool_envvar=\$find_tool_res"
 175   eval "export $find_tool_envvar"
 176 }
 177
 178 # Find sha1sum, named gsha1sum on MacPorts.
 179 find_tool SHA1SUM sha1sum gsha1sum
 180
 181 # Override the default configuration, if necessary.
 182 test -r bootstrap.conf && . ./bootstrap.conf
 183
 184 if test "$vc_ignore" = auto; then
 185   vc_ignore=
 186   test -d .git && vc_ignore=.gitignore
 187   test -d CVS && vc_ignore="$vc_ignore .cvsignore"
 188 fi
 189
 190 # Translate configuration into internal form.
 191
 192 # Parse options.
 193
 194 for option
 195 do
 196   case $option in
 197   --help)
 198     usage
 199     exit;;
 200   --gnulib-srcdir=*)
 201     GNULIB_SRCDIR=`expr "$option" : '--gnulib-srcdir=\(.*\)'`;;
 202   --cvs-user=*)
 203     CVS_USER=`expr "$option" : '--cvs-user=\(.*\)'`;;
 204   --skip-po)
 205     SKIP_PO=t;;
 206   --force)
 207     checkout_only_file=;;
 208   --copy)
 209     copy=true;;
 210   *)
 211     echo >&2 "$0: $option: unknown option"
 212     exit 1;;
 213   esac
 214 done
 215
 216 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
 217   echo "$0: Bootstrapping from a non-checked-out distribution is risky." >&2
 218   exit 1
 219 fi
 220
 221 # If each line in $STR is not already on a line by itself in $FILE, insert it,
 222 # sorting the new contents of the file and replacing $FILE with the result.
 223 insert_sorted_if_absent() {
 224   file=$1
 225   str=$2
 226   test -f $file || touch $file
 227   echo "$str" | sort -u - $file | cmp -s - $file \
 228     || echo "$str" | sort -u - $file -o $file \
 229     || exit 1
 230 }
 231
 232 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
 233 # insert_sorted_if_absent.
 234 insert_vc_ignore() {
 235   vc_ignore_file="$1"
 236   case $vc_ignore_file in
 237   *.gitignore)
 238     # A .gitignore entry that does not start with `/' applies recursively to
 239     # subdirectories, so prepend `/' to every .gitignore entry.
 240     pattern=`echo "$2" | sed s,^,/,`;;
 241   *)
 242     pattern="$2";;
 243   esac
 244   insert_sorted_if_absent "$vc_ignore_file" "$pattern"
 245 }
 246
 247 # Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
 248 found_aux_dir=no
 249 grep '^[         ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
 250     >/dev/null && found_aux_dir=yes
 251 grep '^[         ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
 252     >/dev/null && found_aux_dir=yes
 253 if test $found_aux_dir = no; then
 254   echo "$0: expected line not found in configure.ac. Add the following:" >&2
 255   echo "  AC_CONFIG_AUX_DIR([$build_aux])" >&2
 256   exit 1
 257 fi
 258
 259 # If $build_aux doesn't exist, create it now, otherwise some bits
 260 # below will malfunction.  If creating it, also mark it as ignored.
 261 if test ! -d $build_aux; then
 262   mkdir $build_aux
 263   for dot_ig in x $vc_ignore; do
 264     test $dot_ig = x && continue
 265     insert_vc_ignore $dot_ig $build_aux
 266   done
 267 fi
 268
 269 echo "$0: Bootstrapping from checked-out $package sources..."
 270
 271 cleanup_gnulib() {
 272   status=$?
 273   rm -fr gnulib
 274   exit $status
 275 }
 276
 277 # See if we can use gnulib's git-merge-changelog merge driver.
 278
 279 if test -d .git && (git --version) >/dev/null 2>/dev/null ; then
 280   if git config merge.merge-changelog.driver >/dev/null ; then
 281     :
 282   elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then
 283     echo "initializing git-merge-changelog driver"
 284     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
 285     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
 286   else
 287     echo "consider installing git-merge-changelog from gnulib"
 288   fi
 289 fi
 290
 291 # Get gnulib files.
 292
 293 case ${GNULIB_SRCDIR--} in
 294 -)
 295   if [ ! -d gnulib ]; then
 296     echo "$0: getting gnulib files..."
 297
 298     case ${CVS_AUTH-pserver} in
 299     pserver)
 300       CVS_PREFIX=':pserver:anonymous@';;
 301     ssh)
 302       CVS_PREFIX="$CVS_USER${CVS_USER+@}";;
 303     *)
 304       echo "$0: $CVS_AUTH: Unknown CVS access method" >&2
 305       exit 1;;
 306     esac
 307
 308     case $CVS_RSH in
 309     '') CVS_RSH=ssh; export CVS_RSH;;
 310     esac
 311
 312     trap cleanup_gnulib 1 2 13 15
 313
 314     cvs -z3 -q -d ${CVS_PREFIX}pserver.git.sv.gnu.org:/gnulib.git co -d gnulib HEAD ||
 315       cleanup_gnulib
 316
 317     trap - 1 2 13 15
 318   fi
 319   GNULIB_SRCDIR=gnulib
 320 esac
 321
 322 gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 323 <$gnulib_tool || exit
 324
 325 # Get translations.
 326
 327 download_po_files() {
 328   subdir=$1
 329   domain=$2
 330   echo "$0: getting translations into $subdir for $domain..."
 331   cmd=`printf "$po_download_command_format" "$domain" "$subdir"`
 332   eval "$cmd"
 333 }
 334
 335 # Download .po files to $po_dir/.reference and copy only the new
 336 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.
 337 update_po_files() {
 338   # Directory containing primary .po files.
 339   # Overwrite them only when we're sure a .po file is new.
 340   po_dir=$1
 341   domain=$2
 342
 343   # Download *.po files into this dir.
 344   # Usually contains *.s1 checksum files.
 345   ref_po_dir="$po_dir/.reference"
 346
 347   test -d $ref_po_dir || mkdir $ref_po_dir || return
 348   download_po_files $ref_po_dir $domain \
 349     && ls "$ref_po_dir"/*.po 2>/dev/null |
 350       sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS"
 351
 352   for po in `cd $ref_po_dir && echo *.po|sed 's/\.po//g'`; do
 353      new_po="$ref_po_dir/$po.po"
 354      cksum_file="$ref_po_dir/$po.s1"
 355      if ! "$SHA1SUM" -c --status "$cksum_file" < "$new_po" > /dev/null; then
 356        echo "updated $po_dir/$po.po..."
 357        cp "$new_po" "$po_dir/$po.po" && "$SHA1SUM" < "$new_po" > "$cksum_file"
 358      fi
 359   done
 360 }
 361
 362 case $SKIP_PO in
 363 '')
 364   if test -d po; then
 365     update_po_files po $package || exit
 366   fi
 367
 368   if test -d runtime-po; then
 369     update_po_files runtime-po $package-runtime || exit
 370   fi;;
 371 esac
 372
 373 check_dst_dir()
 374 {
 375   dst=$1
 376   # If the destination directory doesn't exist, create it.
 377   # This is required at least for "lib/uniwidth/cjk.h".
 378   dst_dir=`dirname "$dst"`
 379   if ! test -d "$dst_dir"; then
 380     mkdir -p "$dst_dir"
 381
 382     # If we've just created a directory like lib/uniwidth,
 383     # tell version control system(s) it's ignorable.
 384     # FIXME: for now, this does only one level
 385     parent=`dirname "$dst_dir"`
 386     for dot_ig in x $vc_ignore; do
 387       test $dot_ig = x && continue
 388       ig=$parent/$dot_ig
 389       insert_vc_ignore $ig `echo "$dst_dir"|sed 's,.*/,,'`
 390     done
 391   fi
 392 }
 393
 394 symlink_to_dir()
 395 {
 396   src=$1/$2
 397   dst=${3-$2}
 398
 399   test -f "$src" && {
 400
 401     check_dst_dir "$dst"
 402
 403     if $copy; then
 404       {
 405         test ! -h "$dst" || {
 406           echo "$0: rm -f $dst" &&
 407           rm -f "$dst"
 408         }
 409       } &&
 410       test -f "$dst" &&
 411       cmp -s "$src" "$dst" || {
 412         echo "$0: cp -fp $src $dst" &&
 413         cp -fp "$src" "$dst"
 414       }
 415     else
 416       test -h "$dst" &&
 417       src_ls=`ls -diL "$src" 2>/dev/null` && set $src_ls && src_i=$1 &&
 418       dst_ls=`ls -diL "$dst" 2>/dev/null` && set $dst_ls && dst_i=$1 &&
 419       test "$src_i" = "$dst_i" || {
 420         dot_dots=
 421         case $src in
 422         /*) ;;
 423         *)
 424           case /$dst/ in
 425           *//* | */../* | */./* | /*/*/*/*/*/)
 426              echo >&2 "$0: invalid symlink calculation: $src -> $dst"
 427              exit 1;;
 428           /*/*/*/*/)    dot_dots=../../../;;
 429           /*/*/*/)      dot_dots=../../;;
 430           /*/*/)        dot_dots=../;;
 431           esac;;
 432         esac
 433
 434         echo "$0: ln -fs $dot_dots$src $dst" &&
 435         ln -fs "$dot_dots$src" "$dst"
 436       }
 437     fi
 438   }
 439 }
 440
 441 cp_mark_as_generated()
 442 {
 443   cp_src=$1
 444   cp_dst=$2
 445
 446   if cmp -s "$cp_src" "$GNULIB_SRCDIR/$cp_dst"; then
 447     symlink_to_dir "$GNULIB_SRCDIR" "$cp_dst"
 448   elif cmp -s "$cp_src" "$local_gl_dir/$cp_dst"; then
 449     symlink_to_dir $local_gl_dir "$cp_dst"
 450   else
 451     case $cp_dst in
 452       *.[ch])             c1='/* '; c2=' */';;
 453       *.texi)             c1='@c '; c2=     ;;
 454       *.m4|*/Make*|Make*) c1='# ' ; c2=     ;;
 455       *)                  c1=     ; c2=     ;;
 456     esac
 457
 458     if test -z "$c1"; then
 459       cmp -s "$cp_src" "$cp_dst" || {
 460         echo "$0: cp -f $cp_src $cp_dst" &&
 461         rm -f "$cp_dst" &&
 462         sed "s!$bt_regex/!!g" "$cp_src" > "$cp_dst"
 463       }
 464     else
 465       check_dst_dir "$cp_dst"
 466       # Copy the file first to get proper permissions if it
 467       # doesn't already exist.  Then overwrite the copy.
 468       cp "$cp_src" "$cp_dst-t" &&
 469       (
 470         echo "$c1-*- buffer-read-only: t -*- vi: set ro:$c2" &&
 471         echo "${c1}DO NOT EDIT! GENERATED AUTOMATICALLY!$c2" &&
 472         sed "s!$bt_regex/!!g" "$cp_src"
 473       ) > $cp_dst-t &&
 474       if cmp -s "$cp_dst-t" "$cp_dst"; then
 475         rm -f "$cp_dst-t"
 476       else
 477         echo "$0: cp $cp_src $cp_dst # with edits" &&
 478         mv -f "$cp_dst-t" "$cp_dst"
 479       fi
 480     fi
 481   fi
 482 }
 483
 484 version_controlled_file() {
 485   dir=$1
 486   file=$2
 487   found=no
 488   if test -d CVS; then
 489     grep -F "/$file/" $dir/CVS/Entries 2>/dev/null |
 490              grep '^/[^/]*/[0-9]' > /dev/null && found=yes
 491   elif test -d .git; then
 492     git-rm -n "$dir/$file" > /dev/null 2>&1 && found=yes
 493   else
 494     echo "$0: no version control for $dir/$file?" >&2
 495   fi
 496   test $found = yes
 497 }
 498
 499 slurp() {
 500   for dir in . `(cd $1 && find * -type d -print)`; do
 501     copied=
 502     sep=
 503     for file in `ls -a $1/$dir`; do
 504       case $file in
 505       .|..) continue;;
 506       .*) continue;; # FIXME: should all file names starting with "." be ignored?
 507       esac
 508       test -d $1/$dir/$file && continue
 509       for excluded_file in $excluded_files; do
 510         test "$dir/$file" = "$excluded_file" && continue 2
 511       done
 512       if test $file = Makefile.am; then
 513         copied=$copied${sep}$gnulib_mk; sep=$nl
 514         remove_intl='/^[^#].*\/intl/s/^/#/;'"s!$bt_regex/!!g"
 515         sed "$remove_intl" $1/$dir/$file | cmp -s - $dir/$gnulib_mk || {
 516           echo "$0: Copying $1/$dir/$file to $dir/$gnulib_mk ..." &&
 517           rm -f $dir/$gnulib_mk &&
 518           sed "$remove_intl" $1/$dir/$file >$dir/$gnulib_mk
 519         }
 520       elif { test "${2+set}" = set && test -r $2/$dir/$file; } ||
 521            version_controlled_file $dir $file; then
 522         echo "$0: $dir/$file overrides $1/$dir/$file"
 523       else
 524         copied=$copied$sep$file; sep=$nl
 525         if test $file = gettext.m4; then
 526           echo "$0: patching m4/gettext.m4 to remove need for intl/* ..."
 527           rm -f $dir/$file
 528           sed '
 529             /^AC_DEFUN(\[AM_INTL_SUBDIR],/,/^]/c\
 530               AC_DEFUN([AM_INTL_SUBDIR], [
 531             /^AC_DEFUN(\[gt_INTL_SUBDIR_CORE],/,/^]/c\
 532               AC_DEFUN([gt_INTL_SUBDIR_CORE], [])
 533             $a\
 534               AC_DEFUN([gl_LOCK_EARLY], [])
 535           ' $1/$dir/$file >$dir/$file
 536         else
 537           cp_mark_as_generated $1/$dir/$file $dir/$file
 538         fi
 539       fi || exit
 540     done
 541
 542     for dot_ig in x $vc_ignore; do
 543       test $dot_ig = x && continue
 544       ig=$dir/$dot_ig
 545       if test -n "$copied"; then
 546         insert_vc_ignore $ig "$copied"
 547         # If an ignored file name ends with _.h, then also add
 548         # the name with just ".h".  Many gnulib headers are generated,
 549         # e.g., stdint_.h -> stdint.h, dirent_.h ->..., etc.
 550         # Likewise for .gperf -> .h, .y -> .c, and .sin -> .sed
 551         f=`echo "$copied"|sed 's/_\.h$/.h/;s/\.sin$/.sed/;s/\.y$/.c/;s/\.gperf$/.h/'`
 552         insert_vc_ignore $ig "$f"
 553
 554         # For files like sys_stat_.h and sys_time_.h, record as
 555         # ignorable the directory we might eventually create: sys/.
 556         f=`echo "$copied"|sed 's/sys_.*_\.h$/sys/'`
 557         insert_vc_ignore $ig "$f"
 558       fi
 559     done
 560   done
 561 }
 562
 563
 564 # Create boot temporary directories to import from gnulib and gettext.
 565 rm -fr $bt $bt2 &&
 566 mkdir $bt $bt2 || exit
 567
 568 # Import from gnulib.
 569
 570 gnulib_tool_options="\
 571  --import\
 572  --no-changelog\
 573  --aux-dir $bt/$build_aux\
 574  --doc-base $bt/doc\
 575  --lib $gnulib_name\
 576  --m4-base $bt/m4/\
 577  --source-base $bt/lib/\
 578  --tests-base $bt/tests\
 579  --local-dir $local_gl_dir\
 580 $gnulib_tool_option_extras\
 581 "
 582 echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 583 $gnulib_tool $gnulib_tool_options --import $gnulib_modules &&
 584 slurp $bt || exit
 585
 586 for file in $gnulib_files; do
 587   symlink_to_dir "$GNULIB_SRCDIR" $file || exit
 588 done
 589
 590
 591 # Import from gettext.
 592 with_gettext=yes
 593 grep '^[         ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
 594     with_gettext=no
 595
 596 if test $with_gettext = yes; then
 597   echo "$0: (cd $bt2; autopoint) ..."
 598   cp configure.ac $bt2 &&
 599   (cd $bt2 && autopoint && rm configure.ac) &&
 600   slurp $bt2 $bt || exit
 601
 602   rm -fr $bt $bt2 || exit
 603 fi
 604
 605 # Coreutils is unusual in that it generates some of its test-related
 606 # Makefile.am files.  That must be done before invoking automake.
 607 mam_template=tests/Makefile.am.in
 608 if test -f $mam_template; then
 609   PERL=perl
 610   for tool in cut head join pr sort tac tail test tr uniq wc; do
 611     m=tests/$tool/Makefile.am
 612     t=${m}t
 613     rm -f $m $t
 614     sed -n '1,/^##test-files-begin/p' $mam_template > $t
 615     echo "x = $tool" >> $t
 616     srcdir=tests/$tool
 617     $PERL -I$srcdir -w -- tests/mk-script $srcdir --list >> $t
 618     sed -n '/^##test-files-end/,$p' $mam_template >> $t
 619     chmod -w $t
 620     mv $t $m
 621   done
 622 fi
 623
 624 # Reconfigure, getting other files.
 625
 626 for command in \
 627   libtool \
 628   'aclocal --force -I m4' \
 629   'autoconf --force' \
 630   'autoheader --force' \
 631   'automake --add-missing --copy --force-missing';
 632 do
 633   if test "$command" = libtool; then
 634     grep '^[     ]*AM_PROG_LIBTOOL\>' configure.ac >/dev/null ||
 635       continue
 636     command='libtoolize -c -f'
 637   fi
 638   echo "$0: $command ..."
 639   $command || exit
 640 done
 641
 642
 643 # Get some extra files from gnulib, overriding existing files.
 644 for file in $gnulib_extra_files; do
 645   case $file in
 646   */INSTALL) dst=INSTALL;;
 647   build-aux/*) dst=$build_aux/`expr "$file" : 'build-aux/\(.*\)'`;;
 648   *) dst=$file;;
 649   esac
 650   symlink_to_dir "$GNULIB_SRCDIR" $file $dst || exit
 651 done
 652
 653 if test $with_gettext = yes; then
 654   # Create gettext configuration.
 655   echo "$0: Creating po/Makevars from po/Makevars.template ..."
 656   rm -f po/Makevars
 657   sed '
 658     /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/
 659     /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
 660     /^XGETTEXT_OPTIONS *=/{
 661       s/$/ \\/
 662       a\
 663           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
 664     }
 665   ' po/Makevars.template >po/Makevars
 666
 667   if test -d runtime-po; then
 668     # Similarly for runtime-po/Makevars, but not quite the same.
 669     rm -f runtime-po/Makevars
 670     sed '
 671       /^DOMAIN *=.*/s/=.*/= '"$package"'-runtime/
 672       /^subdir *=.*/s/=.*/= runtime-po/
 673       /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
 674       /^XGETTEXT_OPTIONS *=/{
 675         s/$/ \\/
 676         a\
 677             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
 678       }
 679     ' <po/Makevars.template >runtime-po/Makevars
 680
 681     # Copy identical files from po to runtime-po.
 682     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)
 683   fi
 684 fi
 685
 686 echo "$0: done.  Now you can run './configure'."