bootstrap

   1 #! /bin/sh
   2
   3 # Bootstrap this package from checked-out sources.
   4
   5 # Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation,
   6 # 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   echo >&2 "\
  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 "
  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=README-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 find_tool ()
 146 {
 147   # Find sha1sum, named gsha1sum on MacPorts.
 148   find_tool_envvar=$1
 149   shift
 150   if eval test x"\$$find_tool_envvar" = x; then
 151     for i
 152     do
 153       if ($i --version </dev/null) >/dev/null 2>&1; then
 154         find_tool_res=$i
 155         break
 156       fi
 157     done
 158   fi
 159   if test x"$find_tool_res" = x; then
 160     echo >&2 "$0: $find_tool_name is required"
 161     exit 1
 162   fi
 163   ($find_tool_res --version </dev/null) >/dev/null 2>&1 || {
 164     echo >&2 "$0: cannot run $find_tool_res --version"
 165     exit 1
 166   }
 167   eval "$find_tool_envvar=\"$find_tool_res\""
 168   eval "export $find_tool_envvar"
 169 }
 170
 171 # Find sha1sum, named gsha1sum on MacPorts.
 172 find_tool SHA1SUM sha1sum gsha1sum
 173
 174 # Override the default configuration, if necessary.
 175 test -r bootstrap.conf && . ./bootstrap.conf
 176
 177 if test "$vc_ignore" = auto; then
 178   vc_ignore=
 179   test -d .git && vc_ignore=.gitignore
 180   test -d CVS && vc_ignore="$vc_ignore .cvsignore"
 181 fi
 182
 183 # Translate configuration into internal form.
 184
 185 # Parse options.
 186
 187 for option
 188 do
 189   case $option in
 190   --help)
 191     usage
 192     exit;;
 193   --gnulib-srcdir=*)
 194     GNULIB_SRCDIR=`expr "$option" : '--gnulib-srcdir=\(.*\)'`;;
 195   --cvs-user=*)
 196     CVS_USER=`expr "$option" : '--cvs-user=\(.*\)'`;;
 197   --skip-po)
 198     SKIP_PO=t;;
 199   --force)
 200     checkout_only_file=;;
 201   --copy)
 202     copy=true;;
 203   *)
 204     echo >&2 "$0: $option: unknown option"
 205     exit 1;;
 206   esac
 207 done
 208
 209 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
 210   echo "$0: Bootstrapping from a non-checked-out distribution is risky." >&2
 211   exit 1
 212 fi
 213
 214 # If each line in $STR is not already on a line by itself in $FILE, insert it,
 215 # sorting the new contents of the file and replacing $FILE with the result.
 216 insert_sorted_if_absent() {
 217   file=$1
 218   str=$2
 219   test -f $file || touch $file
 220   echo "$str" | sort -u - $file | cmp -s - $file \
 221     || echo "$str" | sort -u - $file -o $file \
 222     || exit 1
 223 }
 224
 225 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
 226 # insert_sorted_if_absent.
 227 insert_vc_ignore() {
 228   vc_ignore_file="$1"
 229   case $vc_ignore_file in
 230   *.gitignore)
 231     # A .gitignore entry that does not start with `/' applies recursively to
 232     # subdirectories, so prepend `/' to every .gitignore entry.
 233     pattern=`echo "$2" | sed s,^,/,`;;
 234   *)
 235     pattern="$2";;
 236   esac
 237   insert_sorted_if_absent "$vc_ignore_file" "$pattern"
 238 }
 239
 240 # Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
 241 found_aux_dir=no
 242 grep '^[         ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
 243     >/dev/null && found_aux_dir=yes
 244 grep '^[         ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
 245     >/dev/null && found_aux_dir=yes
 246 if test $found_aux_dir = no; then
 247   echo "$0: expected line not found in configure.ac. Add the following:" >&2
 248   echo "  AC_CONFIG_AUX_DIR([$build_aux])" >&2
 249   exit 1
 250 fi
 251
 252 # If $build_aux doesn't exist, create it now, otherwise some bits
 253 # below will malfunction.  If creating it, also mark it as ignored.
 254 if test ! -d $build_aux; then
 255   mkdir $build_aux
 256   for dot_ig in x $vc_ignore; do
 257     test $dot_ig = x && continue
 258     insert_vc_ignore $dot_ig $build_aux
 259   done
 260 fi
 261
 262 echo "$0: Bootstrapping from checked-out $package sources..."
 263
 264 cleanup_gnulib() {
 265   status=$?
 266   rm -fr gnulib
 267   exit $status
 268 }
 269
 270 # See if we can use gnulib's git-merge-changelog merge driver.
 271
 272 if test -d .git && (git --version) >/dev/null 2>/dev/null ; then
 273   if git config merge.merge-changelog.driver >/dev/null ; then
 274     :
 275   elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then
 276     echo "initializing git-merge-changelog driver"
 277     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
 278     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
 279   else
 280     echo "consider installing git-merge-changelog from gnulib"
 281   fi
 282 fi
 283
 284 # Get gnulib files.
 285
 286 case ${GNULIB_SRCDIR--} in
 287 -)
 288   if [ ! -d gnulib ]; then
 289     echo "$0: getting gnulib files..."
 290
 291     case ${CVS_AUTH-pserver} in
 292     pserver)
 293       CVS_PREFIX=':pserver:anonymous@';;
 294     ssh)
 295       CVS_PREFIX="$CVS_USER${CVS_USER+@}";;
 296     *)
 297       echo "$0: $CVS_AUTH: Unknown CVS access method" >&2
 298       exit 1;;
 299     esac
 300
 301     case $CVS_RSH in
 302     '') CVS_RSH=ssh; export CVS_RSH;;
 303     esac
 304
 305     trap cleanup_gnulib 1 2 13 15
 306
 307     cvs -z3 -q -d ${CVS_PREFIX}pserver.git.sv.gnu.org:/gnulib.git co -d gnulib HEAD ||
 308       cleanup_gnulib
 309
 310     trap - 1 2 13 15
 311   fi
 312   GNULIB_SRCDIR=gnulib
 313 esac
 314
 315 gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 316 <$gnulib_tool || exit
 317
 318 # Get translations.
 319
 320 download_po_files() {
 321   subdir=$1
 322   domain=$2
 323   echo "$0: getting translations into $subdir for $domain..."
 324   cmd=`printf "$po_download_command_format" "$domain" "$subdir"`
 325   eval "$cmd"
 326 }
 327
 328 # Download .po files to $po_dir/.reference and copy only the new
 329 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.
 330 update_po_files() {
 331   # Directory containing primary .po files.
 332   # Overwrite them only when we're sure a .po file is new.
 333   po_dir=$1
 334   domain=$2
 335
 336   # Download *.po files into this dir.
 337   # Usually contains *.s1 checksum files.
 338   ref_po_dir="$po_dir/.reference"
 339
 340   test -d $ref_po_dir || mkdir $ref_po_dir || return
 341   download_po_files $ref_po_dir $domain \
 342     && ls "$ref_po_dir"/*.po 2>/dev/null |
 343       sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS"
 344
 345   for po in `cd $ref_po_dir && echo *.po|sed 's/\.po//g'`; do
 346      new_po="$ref_po_dir/$po.po"
 347      cksum_file="$ref_po_dir/$po.s1"
 348      if ! "$SHA1SUM" -c --status "$cksum_file" < "$new_po" > /dev/null; then
 349        echo "updated $po_dir/$po.po..."
 350        cp "$new_po" "$po_dir/$po.po" && "$SHA1SUM" < "$new_po" > "$cksum_file"
 351      fi
 352   done
 353 }
 354
 355 case $SKIP_PO in
 356 '')
 357   if test -d po; then
 358     update_po_files po $package || exit
 359   fi
 360
 361   if test -d runtime-po; then
 362     update_po_files runtime-po $package-runtime || exit
 363   fi;;
 364 esac
 365
 366 check_dst_dir()
 367 {
 368   dst=$1
 369   # If the destination directory doesn't exist, create it.
 370   # This is required at least for "lib/uniwidth/cjk.h".
 371   dst_dir=`dirname "$dst"`
 372   if ! test -d "$dst_dir"; then
 373     mkdir -p "$dst_dir"
 374
 375     # If we've just created a directory like lib/uniwidth,
 376     # tell version control system(s) it's ignorable.
 377     # FIXME: for now, this does only one level
 378     parent=`dirname "$dst_dir"`
 379     for dot_ig in x $vc_ignore; do
 380       test $dot_ig = x && continue
 381       ig=$parent/$dot_ig
 382       insert_vc_ignore $ig `echo "$dst_dir"|sed 's,.*/,,'`
 383     done
 384   fi
 385 }
 386
 387 symlink_to_dir()
 388 {
 389   src=$1/$2
 390   dst=${3-$2}
 391
 392   test -f "$src" && {
 393
 394     check_dst_dir "$dst"
 395
 396     if $copy; then
 397       {
 398         test ! -h "$dst" || {
 399           echo "$0: rm -f $dst" &&
 400           rm -f "$dst"
 401         }
 402       } &&
 403       test -f "$dst" &&
 404       cmp -s "$src" "$dst" || {
 405         echo "$0: cp -fp $src $dst" &&
 406         cp -fp "$src" "$dst"
 407       }
 408     else
 409       test -h "$dst" &&
 410       src_ls=`ls -diL "$src" 2>/dev/null` && set $src_ls && src_i=$1 &&
 411       dst_ls=`ls -diL "$dst" 2>/dev/null` && set $dst_ls && dst_i=$1 &&
 412       test "$src_i" = "$dst_i" || {
 413         dot_dots=
 414         case $src in
 415         /*) ;;
 416         *)
 417           case /$dst/ in
 418           *//* | */../* | */./* | /*/*/*/*/*/)
 419              echo >&2 "$0: invalid symlink calculation: $src -> $dst"
 420              exit 1;;
 421           /*/*/*/*/)    dot_dots=../../../;;
 422           /*/*/*/)      dot_dots=../../;;
 423           /*/*/)        dot_dots=../;;
 424           esac;;
 425         esac
 426
 427         echo "$0: ln -fs $dot_dots$src $dst" &&
 428         ln -fs "$dot_dots$src" "$dst"
 429       }
 430     fi
 431   }
 432 }
 433
 434 cp_mark_as_generated()
 435 {
 436   cp_src=$1
 437   cp_dst=$2
 438
 439   if cmp -s "$cp_src" "$GNULIB_SRCDIR/$cp_dst"; then
 440     symlink_to_dir "$GNULIB_SRCDIR" "$cp_dst"
 441   elif cmp -s "$cp_src" "$local_gl_dir/$cp_dst"; then
 442     symlink_to_dir $local_gl_dir "$cp_dst"
 443   else
 444     case $cp_dst in
 445       *.[ch])             c1='/* '; c2=' */';;
 446       *.texi)             c1='@c '; c2=     ;;
 447       *.m4|*/Make*|Make*) c1='# ' ; c2=     ;;
 448       *)                  c1=     ; c2=     ;;
 449     esac
 450
 451     if test -z "$c1"; then
 452       cmp -s "$cp_src" "$cp_dst" || {
 453         echo "$0: cp -f $cp_src $cp_dst" &&
 454         rm -f "$cp_dst" &&
 455         sed "s!$bt_regex/!!g" "$cp_src" > "$cp_dst"
 456       }
 457     else
 458       check_dst_dir "$cp_dst"
 459       # Copy the file first to get proper permissions if it
 460       # doesn't already exist.  Then overwrite the copy.
 461       cp "$cp_src" "$cp_dst-t" &&
 462       (
 463         echo "$c1-*- buffer-read-only: t -*- vi: set ro:$c2" &&
 464         echo "${c1}DO NOT EDIT! GENERATED AUTOMATICALLY!$c2" &&
 465         sed "s!$bt_regex/!!g" "$cp_src"
 466       ) > $cp_dst-t &&
 467       if cmp -s "$cp_dst-t" "$cp_dst"; then
 468         rm -f "$cp_dst-t"
 469       else
 470         echo "$0: cp $cp_src $cp_dst # with edits" &&
 471         mv -f "$cp_dst-t" "$cp_dst"
 472       fi
 473     fi
 474   fi
 475 }
 476
 477 version_controlled_file() {
 478   dir=$1
 479   file=$2
 480   found=no
 481   if test -d CVS; then
 482     grep -F "/$file/" $dir/CVS/Entries 2>/dev/null |
 483              grep '^/[^/]*/[0-9]' > /dev/null && found=yes
 484   elif test -d .git; then
 485     git-rm -n "$dir/$file" > /dev/null 2>&1 && found=yes
 486   else
 487     echo "$0: no version control for $dir/$file?" >&2
 488   fi
 489   test $found = yes
 490 }
 491
 492 slurp() {
 493   for dir in . `(cd $1 && find * -type d -print)`; do
 494     copied=
 495     sep=
 496     for file in `ls -a $1/$dir`; do
 497       case $file in
 498       .|..) continue;;
 499       .*) continue;; # FIXME: should all file names starting with "." be ignored?
 500       esac
 501       test -d $1/$dir/$file && continue
 502       for excluded_file in $excluded_files; do
 503         test "$dir/$file" = "$excluded_file" && continue 2
 504       done
 505       if test $file = Makefile.am; then
 506         copied=$copied${sep}$gnulib_mk; sep=$nl
 507         remove_intl='/^[^#].*\/intl/s/^/#/;'"s!$bt_regex/!!g"
 508         sed "$remove_intl" $1/$dir/$file | cmp -s - $dir/$gnulib_mk || {
 509           echo "$0: Copying $1/$dir/$file to $dir/$gnulib_mk ..." &&
 510           rm -f $dir/$gnulib_mk &&
 511           sed "$remove_intl" $1/$dir/$file >$dir/$gnulib_mk
 512         }
 513       elif { test "${2+set}" = set && test -r $2/$dir/$file; } ||
 514            version_controlled_file $dir $file; then
 515         echo "$0: $dir/$file overrides $1/$dir/$file"
 516       else
 517         copied=$copied$sep$file; sep=$nl
 518         if test $file = gettext.m4; then
 519           echo "$0: patching m4/gettext.m4 to remove need for intl/* ..."
 520           rm -f $dir/$file
 521           sed '
 522             /^AC_DEFUN(\[AM_INTL_SUBDIR],/,/^]/c\
 523               AC_DEFUN([AM_INTL_SUBDIR], [
 524             /^AC_DEFUN(\[gt_INTL_SUBDIR_CORE],/,/^]/c\
 525               AC_DEFUN([gt_INTL_SUBDIR_CORE], [])
 526             $a\
 527               AC_DEFUN([gl_LOCK_EARLY], [])
 528           ' $1/$dir/$file >$dir/$file
 529         else
 530           cp_mark_as_generated $1/$dir/$file $dir/$file
 531         fi
 532       fi || exit
 533     done
 534
 535     for dot_ig in x $vc_ignore; do
 536       test $dot_ig = x && continue
 537       ig=$dir/$dot_ig
 538       if test -n "$copied"; then
 539         insert_vc_ignore $ig "$copied"
 540         # If an ignored file name ends with _.h, then also add
 541         # the name with just ".h".  Many gnulib headers are generated,
 542         # e.g., stdint_.h -> stdint.h, dirent_.h ->..., etc.
 543         # Likewise for .gperf -> .h, .y -> .c, and .sin -> .sed
 544         f=`echo "$copied"|sed 's/_\.h$/.h/;s/\.sin$/.sed/;s/\.y$/.c/;s/\.gperf$/.h/'`
 545         insert_vc_ignore $ig "$f"
 546
 547         # For files like sys_stat_.h and sys_time_.h, record as
 548         # ignorable the directory we might eventually create: sys/.
 549         f=`echo "$copied"|sed 's/sys_.*_\.h$/sys/'`
 550         insert_vc_ignore $ig "$f"
 551       fi
 552     done
 553   done
 554 }
 555
 556
 557 # Create boot temporary directories to import from gnulib and gettext.
 558 rm -fr $bt $bt2 &&
 559 mkdir $bt $bt2 || exit
 560
 561 # Import from gnulib.
 562
 563 gnulib_tool_options="\
 564  --import\
 565  --no-changelog\
 566  --aux-dir $bt/$build_aux\
 567  --doc-base $bt/doc\
 568  --lib $gnulib_name\
 569  --m4-base $bt/m4/\
 570  --source-base $bt/lib/\
 571  --tests-base $bt/tests\
 572  --local-dir $local_gl_dir\
 573 $gnulib_tool_option_extras\
 574 "
 575 echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 576 $gnulib_tool $gnulib_tool_options --import $gnulib_modules &&
 577 slurp $bt || exit
 578
 579 for file in $gnulib_files; do
 580   symlink_to_dir "$GNULIB_SRCDIR" $file || exit
 581 done
 582
 583
 584 # Import from gettext.
 585 with_gettext=yes
 586 grep '^[         ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
 587     with_gettext=no
 588
 589 if test $with_gettext = yes; then
 590   echo "$0: (cd $bt2; autopoint) ..."
 591   cp configure.ac $bt2 &&
 592   (cd $bt2 && autopoint && rm configure.ac) &&
 593   slurp $bt2 $bt || exit
 594
 595   rm -fr $bt $bt2 || exit
 596 fi
 597
 598 # Coreutils is unusual in that it generates some of its test-related
 599 # Makefile.am files.  That must be done before invoking automake.
 600 mam_template=tests/Makefile.am.in
 601 if test -f $mam_template; then
 602   PERL=perl
 603   for tool in cut head join pr sort tac tail test tr uniq wc; do
 604     m=tests/$tool/Makefile.am
 605     t=${m}t
 606     rm -f $m $t
 607     sed -n '1,/^##test-files-begin/p' $mam_template > $t
 608     echo "x = $tool" >> $t
 609     srcdir=tests/$tool
 610     $PERL -I$srcdir -w -- tests/mk-script $srcdir --list >> $t
 611     sed -n '/^##test-files-end/,$p' $mam_template >> $t
 612     chmod -w $t
 613     mv $t $m
 614   done
 615 fi
 616
 617 # FIXME: Gnulib should be patched to add "/" in front of .gitignore entries
 618 # instead.  Anyway, this hack must be done before invoking autoconf so that
 619 # build-aux/git-version-gen doesn't think the version is dirty because
 620 # .gitignore isn't committed.
 621 grep -v '^GNUmakefile$' .gitignore > .gitignore~ && mv .gitignore~ .gitignore
 622
 623 # Reconfigure, getting other files.
 624
 625 for command in \
 626   libtool \
 627   'aclocal --force -I m4' \
 628   'autoconf --force' \
 629   'autoheader --force' \
 630   'automake --add-missing --copy --force-missing';
 631 do
 632   if test "$command" = libtool; then
 633     grep '^[     ]*AM_PROG_LIBTOOL\>' configure.ac >/dev/null ||
 634       continue
 635     command='libtoolize -c -f'
 636   fi
 637   echo "$0: $command ..."
 638   $command || exit
 639 done
 640
 641
 642 # Get some extra files from gnulib, overriding existing files.
 643 for file in $gnulib_extra_files; do
 644   case $file in
 645   */INSTALL) dst=INSTALL;;
 646   build-aux/*) dst=$build_aux/`expr "$file" : 'build-aux/\(.*\)'`;;
 647   *) dst=$file;;
 648   esac
 649   symlink_to_dir "$GNULIB_SRCDIR" $file $dst || exit
 650 done
 651
 652 if test $with_gettext = yes; then
 653   # Create gettext configuration.
 654   echo "$0: Creating po/Makevars from po/Makevars.template ..."
 655   rm -f po/Makevars
 656   sed '
 657     /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/
 658     /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
 659     /^XGETTEXT_OPTIONS *=/{
 660       s/$/ \\/
 661       a\
 662           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
 663     }
 664   ' po/Makevars.template >po/Makevars
 665
 666   if test -d runtime-po; then
 667     # Similarly for runtime-po/Makevars, but not quite the same.
 668     rm -f runtime-po/Makevars
 669     sed '
 670       /^DOMAIN *=.*/s/=.*/= '"$package"'-runtime/
 671       /^subdir *=.*/s/=.*/= runtime-po/
 672       /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
 673       /^XGETTEXT_OPTIONS *=/{
 674         s/$/ \\/
 675         a\
 676             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
 677       }
 678     ' <po/Makevars.template >runtime-po/Makevars
 679
 680     # Copy identical files from po to runtime-po.
 681     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)
 682   fi
 683 fi
 684
 685 echo "$0: done.  Now you can run './configure'."