bootstrap

   1 #! /bin/sh
   2
   3 # Bootstrap this package from checked-out sources.
   4
   5 # Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
   6 # Free Software Foundation, Inc.
   7
   8 # This program is free software: you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation, either version 3 of the License, or
  11 # (at your option) any later version.
  12
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 # Written by Paul Eggert.
  22
  23 nl='
  24 '
  25
  26 # Ensure file names are sorted consistently across platforms.
  27 # Also, ensure diagnostics are in English, e.g., "wget --help" below.
  28 LC_ALL=C
  29 export LC_ALL
  30
  31 local_gl_dir=gl
  32
  33 # Temporary directory names.
  34 bt='._bootmp'
  35 bt_regex=`echo "$bt"| sed 's/\./[.]/g'`
  36 bt2=${bt}2
  37
  38 usage() {
  39   cat <<EOF
  40 Usage: $0 [OPTION]...
  41 Bootstrap this package from the checked-out sources.
  42
  43 Options:
  44  --gnulib-srcdir=DIRNAME  Specify the local directory where gnulib
  45                           sources reside.  Use this if you already
  46                           have gnulib sources on your machine, and
  47                           do not want to waste your bandwidth downloading
  48                           them again.
  49  --copy                   Copy files instead of creating symbolic links.
  50  --force                  Attempt to bootstrap even if the sources seem
  51                           not to have been checked out.
  52  --skip-po                Do not download po files.
  53  --cvs-user=USERNAME      Set the username to use when checking out
  54                           sources from the gnulib repository.
  55
  56 If the file bootstrap.conf exists in the current working directory, its
  57 contents are read as shell variables to configure the bootstrap.
  58
  59 Running without arguments will suffice in most cases.
  60 EOF
  61 }
  62
  63 # Configuration.
  64
  65 # Name of the Makefile.am
  66 gnulib_mk=gnulib.mk
  67
  68 # List of gnulib modules needed.
  69 gnulib_modules=
  70
  71 # Any gnulib files needed that are not in modules.
  72 gnulib_files=
  73
  74 # The command to download all .po files for a specified domain into
  75 # a specified directory.  Fill in the first %s is the domain name, and
  76 # the second with the destination directory.  Use rsync's -L and -r
  77 # options because the latest/%s directory and the .po files within are
  78 # all symlinks.
  79 po_download_command_format=\
  80 "rsync -Lrtvz 'translationproject.org::tp/latest/%s/' '%s'"
  81
  82 extract_package_name='
  83   /^AC_INIT(/{
  84      /.*,.*,.*,/{
  85        s///
  86        s/[][]//g
  87        p
  88        q
  89      }
  90      s/AC_INIT(\[*//
  91      s/]*,.*//
  92      s/^GNU //
  93      y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
  94      s/[^A-Za-z0-9_]/-/g
  95      p
  96   }
  97 '
  98 package=`sed -n "$extract_package_name" configure.ac` || exit
  99 gnulib_name=lib$package
 100
 101 build_aux=build-aux
 102 # Extra files from gnulib, which override files from other sources.
 103 gnulib_extra_files="
 104         $build_aux/install-sh
 105         $build_aux/missing
 106         $build_aux/mdate-sh
 107         $build_aux/texinfo.tex
 108         $build_aux/depcomp
 109         $build_aux/config.guess
 110         $build_aux/config.sub
 111         doc/INSTALL
 112 "
 113
 114 # Additional gnulib-tool options to use.  Use "\newline" to break lines.
 115 gnulib_tool_option_extras=
 116
 117 # Other locale categories that need message catalogs.
 118 EXTRA_LOCALE_CATEGORIES=
 119
 120 # Additional xgettext options to use.  Use "\\\newline" to break lines.
 121 XGETTEXT_OPTIONS='\\\
 122  --flag=_:1:pass-c-format\\\
 123  --flag=N_:1:pass-c-format\\\
 124  --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 125 '
 126
 127 # Files we don't want to import.
 128 excluded_files=
 129
 130 # File that should exist in the top directory of a checked out hierarchy,
 131 # but not in a distribution tarball.
 132 checkout_only_file=HACKING
 133
 134 # Whether to use copies instead of symlinks.
 135 copy=false
 136
 137 # Set this to '.cvsignore .gitignore' in bootstrap.conf if you want
 138 # those files to be generated in directories like lib/, m4/, and po/.
 139 # Or set it to 'auto' to make this script select which to use based
 140 # on which version control system (if any) is used in the source directory.
 141 vc_ignore=auto
 142
 143 # find_tool ENVVAR NAMES...
 144 # -------------------------
 145 # Look for some needed program.  Use the value of the ENVVAR if set,
 146 # otherwise look for the first of the NAMES that can be run (i.e.,
 147 # supports --version).  If found, set ENVVAR to the program name,
 148 # die otherwise.
 149 find_tool ()
 150 {
 151   # Find sha1sum, named gsha1sum on MacPorts.
 152   find_tool_envvar=$1
 153   shift
 154   find_tool_names=$@
 155   eval "find_tool_res=\$$find_tool_envvar"
 156   if test x"$find_tool_res" = x; then
 157     for i
 158     do
 159       if ($i --version </dev/null) >/dev/null 2>&1; then
 160        find_tool_res=$i
 161        break
 162       fi
 163     done
 164   else
 165     find_tool_error_prefix="\$$find_tool_envvar: "
 166   fi
 167   if test x"$find_tool_res" = x; then
 168     echo >&2 "$0: one of these is required: $find_tool_names"
 169     exit 1
 170   fi
 171   ($find_tool_res --version </dev/null) >/dev/null 2>&1 || {
 172     echo >&2 "$0: ${find_tool_error_prefix}cannot run $find_tool_res --version"
 173     exit 1
 174   }
 175   eval "$find_tool_envvar=\$find_tool_res"
 176   eval "export $find_tool_envvar"
 177 }
 178
 179 # Find sha1sum, named gsha1sum on MacPorts.
 180 find_tool SHA1SUM sha1sum gsha1sum
 181
 182 # Override the default configuration, if necessary.
 183 test -r bootstrap.conf && . ./bootstrap.conf
 184
 185 if test "$vc_ignore" = auto; then
 186   vc_ignore=
 187   test -d .git && vc_ignore=.gitignore
 188   test -d CVS && vc_ignore="$vc_ignore .cvsignore"
 189 fi
 190
 191 # Translate configuration into internal form.
 192
 193 # Parse options.
 194
 195 for option
 196 do
 197   case $option in
 198   --help)
 199     usage
 200     exit;;
 201   --gnulib-srcdir=*)
 202     GNULIB_SRCDIR=`expr "$option" : '--gnulib-srcdir=\(.*\)'`;;
 203   --cvs-user=*)
 204     CVS_USER=`expr "$option" : '--cvs-user=\(.*\)'`;;
 205   --skip-po)
 206     SKIP_PO=t;;
 207   --force)
 208     checkout_only_file=;;
 209   --copy)
 210     copy=true;;
 211   *)
 212     echo >&2 "$0: $option: unknown option"
 213     exit 1;;
 214   esac
 215 done
 216
 217 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
 218   echo "$0: Bootstrapping from a non-checked-out distribution is risky." >&2
 219   exit 1
 220 fi
 221
 222 # If each line in $STR is not already on a line by itself in $FILE, insert it,
 223 # sorting the new contents of the file and replacing $FILE with the result.
 224 insert_sorted_if_absent() {
 225   file=$1
 226   str=$2
 227   test -f $file || touch $file
 228   echo "$str" | sort -u - $file | cmp -s - $file \
 229     || echo "$str" | sort -u - $file -o $file \
 230     || exit 1
 231 }
 232
 233 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
 234 # insert_sorted_if_absent.
 235 insert_vc_ignore() {
 236   vc_ignore_file="$1"
 237   case $vc_ignore_file in
 238   *.gitignore)
 239     # A .gitignore entry that does not start with `/' applies recursively to
 240     # subdirectories, so prepend `/' to every .gitignore entry.
 241     pattern=`echo "$2" | sed s,^,/,`;;
 242   *)
 243     pattern="$2";;
 244   esac
 245   insert_sorted_if_absent "$vc_ignore_file" "$pattern"
 246 }
 247
 248 # Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
 249 found_aux_dir=no
 250 grep '^[         ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
 251     >/dev/null && found_aux_dir=yes
 252 grep '^[         ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
 253     >/dev/null && found_aux_dir=yes
 254 if test $found_aux_dir = no; then
 255   echo "$0: expected line not found in configure.ac. Add the following:" >&2
 256   echo "  AC_CONFIG_AUX_DIR([$build_aux])" >&2
 257   exit 1
 258 fi
 259
 260 # If $build_aux doesn't exist, create it now, otherwise some bits
 261 # below will malfunction.  If creating it, also mark it as ignored.
 262 if test ! -d $build_aux; then
 263   mkdir $build_aux
 264   for dot_ig in x $vc_ignore; do
 265     test $dot_ig = x && continue
 266     insert_vc_ignore $dot_ig $build_aux
 267   done
 268 fi
 269
 270 echo "$0: Bootstrapping from checked-out $package sources..."
 271
 272 cleanup_gnulib() {
 273   status=$?
 274   rm -fr gnulib
 275   exit $status
 276 }
 277
 278 # See if we can use gnulib's git-merge-changelog merge driver.
 279
 280 if test -d .git && (git --version) >/dev/null 2>/dev/null ; then
 281   if git config merge.merge-changelog.driver >/dev/null ; then
 282     :
 283   elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then
 284     echo "initializing git-merge-changelog driver"
 285     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
 286     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
 287   else
 288     echo "consider installing git-merge-changelog from gnulib"
 289   fi
 290 fi
 291
 292 # Get gnulib files.
 293
 294 case ${GNULIB_SRCDIR--} in
 295 -)
 296   if [ ! -d gnulib ]; then
 297     echo "$0: getting gnulib files..."
 298
 299     case ${CVS_AUTH-pserver} in
 300     pserver)
 301       CVS_PREFIX=':pserver:anonymous@';;
 302     ssh)
 303       CVS_PREFIX="$CVS_USER${CVS_USER+@}";;
 304     *)
 305       echo "$0: $CVS_AUTH: Unknown CVS access method" >&2
 306       exit 1;;
 307     esac
 308
 309     case $CVS_RSH in
 310     '') CVS_RSH=ssh; export CVS_RSH;;
 311     esac
 312
 313     trap cleanup_gnulib 1 2 13 15
 314
 315     cvs -z3 -q -d ${CVS_PREFIX}pserver.git.sv.gnu.org:/gnulib.git co -d gnulib HEAD ||
 316       cleanup_gnulib
 317
 318     trap - 1 2 13 15
 319   fi
 320   GNULIB_SRCDIR=gnulib
 321 esac
 322
 323 gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 324 <$gnulib_tool || exit
 325
 326 # Get translations.
 327
 328 download_po_files() {
 329   subdir=$1
 330   domain=$2
 331   echo "$0: getting translations into $subdir for $domain..."
 332   cmd=`printf "$po_download_command_format" "$domain" "$subdir"`
 333   eval "$cmd"
 334 }
 335
 336 # Download .po files to $po_dir/.reference and copy only the new
 337 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.
 338 update_po_files() {
 339   # Directory containing primary .po files.
 340   # Overwrite them only when we're sure a .po file is new.
 341   po_dir=$1
 342   domain=$2
 343
 344   # Download *.po files into this dir.
 345   # Usually contains *.s1 checksum files.
 346   ref_po_dir="$po_dir/.reference"
 347
 348   test -d $ref_po_dir || mkdir $ref_po_dir || return
 349   download_po_files $ref_po_dir $domain \
 350     && ls "$ref_po_dir"/*.po 2>/dev/null |
 351       sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS"
 352
 353   for po in `cd $ref_po_dir && echo *.po|sed 's/\.po//g'`; do
 354      new_po="$ref_po_dir/$po.po"
 355      cksum_file="$ref_po_dir/$po.s1"
 356      if ! "$SHA1SUM" -c --status "$cksum_file" < "$new_po" > /dev/null; then
 357        echo "updated $po_dir/$po.po..."
 358        cp "$new_po" "$po_dir/$po.po" && "$SHA1SUM" < "$new_po" > "$cksum_file"
 359      fi
 360   done
 361 }
 362
 363 case $SKIP_PO in
 364 '')
 365   if test -d po; then
 366     update_po_files po $package || exit
 367   fi
 368
 369   if test -d runtime-po; then
 370     update_po_files runtime-po $package-runtime || exit
 371   fi;;
 372 esac
 373
 374 check_dst_dir()
 375 {
 376   dst=$1
 377   # If the destination directory doesn't exist, create it.
 378   # This is required at least for "lib/uniwidth/cjk.h".
 379   dst_dir=`dirname "$dst"`
 380   if ! test -d "$dst_dir"; then
 381     mkdir -p "$dst_dir"
 382
 383     # If we've just created a directory like lib/uniwidth,
 384     # tell version control system(s) it's ignorable.
 385     # FIXME: for now, this does only one level
 386     parent=`dirname "$dst_dir"`
 387     for dot_ig in x $vc_ignore; do
 388       test $dot_ig = x && continue
 389       ig=$parent/$dot_ig
 390       insert_vc_ignore $ig `echo "$dst_dir"|sed 's,.*/,,'`
 391     done
 392   fi
 393 }
 394
 395 symlink_to_dir()
 396 {
 397   src=$1/$2
 398   dst=${3-$2}
 399
 400   test -f "$src" && {
 401
 402     check_dst_dir "$dst"
 403
 404     if $copy; then
 405       {
 406         test ! -h "$dst" || {
 407           echo "$0: rm -f $dst" &&
 408           rm -f "$dst"
 409         }
 410       } &&
 411       test -f "$dst" &&
 412       cmp -s "$src" "$dst" || {
 413         echo "$0: cp -fp $src $dst" &&
 414         cp -fp "$src" "$dst"
 415       }
 416     else
 417       test -h "$dst" &&
 418       src_ls=`ls -diL "$src" 2>/dev/null` && set $src_ls && src_i=$1 &&
 419       dst_ls=`ls -diL "$dst" 2>/dev/null` && set $dst_ls && dst_i=$1 &&
 420       test "$src_i" = "$dst_i" || {
 421         dot_dots=
 422         case $src in
 423         /*) ;;
 424         *)
 425           case /$dst/ in
 426           *//* | */../* | */./* | /*/*/*/*/*/)
 427              echo >&2 "$0: invalid symlink calculation: $src -> $dst"
 428              exit 1;;
 429           /*/*/*/*/)    dot_dots=../../../;;
 430           /*/*/*/)      dot_dots=../../;;
 431           /*/*/)        dot_dots=../;;
 432           esac;;
 433         esac
 434
 435         echo "$0: ln -fs $dot_dots$src $dst" &&
 436         ln -fs "$dot_dots$src" "$dst"
 437       }
 438     fi
 439   }
 440 }
 441
 442 cp_mark_as_generated()
 443 {
 444   cp_src=$1
 445   cp_dst=$2
 446
 447   if cmp -s "$cp_src" "$GNULIB_SRCDIR/$cp_dst"; then
 448     symlink_to_dir "$GNULIB_SRCDIR" "$cp_dst"
 449   elif cmp -s "$cp_src" "$local_gl_dir/$cp_dst"; then
 450     symlink_to_dir $local_gl_dir "$cp_dst"
 451   else
 452     case $cp_dst in
 453       *.[ch])             c1='/* '; c2=' */';;
 454       *.texi)             c1='@c '; c2=     ;;
 455       *.m4|*/Make*|Make*) c1='# ' ; c2=     ;;
 456       *)                  c1=     ; c2=     ;;
 457     esac
 458
 459     if test -z "$c1"; then
 460       cmp -s "$cp_src" "$cp_dst" || {
 461         echo "$0: cp -f $cp_src $cp_dst" &&
 462         rm -f "$cp_dst" &&
 463         sed "s!$bt_regex/!!g" "$cp_src" > "$cp_dst"
 464       }
 465     else
 466       check_dst_dir "$cp_dst"
 467       # Copy the file first to get proper permissions if it
 468       # doesn't already exist.  Then overwrite the copy.
 469       cp "$cp_src" "$cp_dst-t" &&
 470       (
 471         echo "$c1-*- buffer-read-only: t -*- vi: set ro:$c2" &&
 472         echo "${c1}DO NOT EDIT! GENERATED AUTOMATICALLY!$c2" &&
 473         sed "s!$bt_regex/!!g" "$cp_src"
 474       ) > $cp_dst-t &&
 475       if cmp -s "$cp_dst-t" "$cp_dst"; then
 476         rm -f "$cp_dst-t"
 477       else
 478         echo "$0: cp $cp_src $cp_dst # with edits" &&
 479         mv -f "$cp_dst-t" "$cp_dst"
 480       fi
 481     fi
 482   fi
 483 }
 484
 485 version_controlled_file() {
 486   dir=$1
 487   file=$2
 488   found=no
 489   if test -d CVS; then
 490     grep -F "/$file/" $dir/CVS/Entries 2>/dev/null |
 491              grep '^/[^/]*/[0-9]' > /dev/null && found=yes
 492   elif test -d .git; then
 493     git-rm -n "$dir/$file" > /dev/null 2>&1 && found=yes
 494   else
 495     echo "$0: no version control for $dir/$file?" >&2
 496   fi
 497   test $found = yes
 498 }
 499
 500 slurp() {
 501   for dir in . `(cd $1 && find * -type d -print)`; do
 502     copied=
 503     sep=
 504     for file in `ls -a $1/$dir`; do
 505       case $file in
 506       .|..) continue;;
 507       .*) continue;; # FIXME: should all file names starting with "." be ignored?
 508       esac
 509       test -d $1/$dir/$file && continue
 510       for excluded_file in $excluded_files; do
 511         test "$dir/$file" = "$excluded_file" && continue 2
 512       done
 513       if test $file = Makefile.am; then
 514         copied=$copied${sep}$gnulib_mk; sep=$nl
 515         remove_intl='/^[^#].*\/intl/s/^/#/;'"s!$bt_regex/!!g"
 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         etc/prefix-gnulib-mk $dir/$gnulib_mk
 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'."