bootstrap

   1 #! /bin/sh
   2 # Print a version string.
   3 scriptversion=2020-11-18.17; # UTC
   4
   5 # Bootstrap this package from checked-out sources.
   6
   7 # Copyright (C) 2003-2021 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 <https://www.gnu.org/licenses/>.
  21
  22 # Originally written by Paul Eggert.  The canonical version of this
  23 # script is maintained as build-aux/bootstrap in gnulib, however, to
  24 # be useful to your project, you should place a copy of it under
  25 # version control in the top-level directory of your project.  The
  26 # intent is that all customization can be done with a bootstrap.conf
  27 # file also maintained in your version control; gnulib comes with a
  28 # template build-aux/bootstrap.conf to get you started.
  29
  30 # Please report bugs or propose patches to bug-gnulib@gnu.org.
  31
  32 nl='
  33 '
  34
  35 # Ensure file names are sorted consistently across platforms.
  36 LC_ALL=C
  37 export LC_ALL
  38
  39 # Ensure that CDPATH is not set.  Otherwise, the output from cd
  40 # would cause trouble in at least one use below.
  41 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
  42
  43 local_gl_dir=gl
  44
  45 # Honor $PERL, but work even if there is none.
  46 PERL="${PERL-perl}"
  47
  48 me=$0
  49
  50 default_gnulib_url=git://git.sv.gnu.org/gnulib
  51
  52 usage() {
  53   cat <<EOF
  54 Usage: $me [OPTION]...
  55 Bootstrap this package from the checked-out sources.
  56
  57 Options:
  58  --gnulib-srcdir=DIRNAME  specify the local directory where gnulib
  59                           sources reside.  Use this if you already
  60                           have gnulib sources on your machine, and
  61                           do not want to waste your bandwidth downloading
  62                           them again.  Defaults to \$GNULIB_SRCDIR
  63  --bootstrap-sync         if this bootstrap script is not identical to
  64                           the version in the local gnulib sources,
  65                           update this script, and then restart it with
  66                           /bin/sh or the shell \$CONFIG_SHELL
  67  --no-bootstrap-sync      do not check whether bootstrap is out of sync
  68  --copy                   copy files instead of creating symbolic links
  69  --force                  attempt to bootstrap even if the sources seem
  70                           not to have been checked out
  71  --no-git                 do not use git to update gnulib.  Requires that
  72                           --gnulib-srcdir point to a correct gnulib snapshot
  73  --skip-po                do not download po files
  74 EOF
  75   bootstrap_print_option_usage_hook
  76   cat <<EOF
  77 If the file $me.conf exists in the same directory as this script, its
  78 contents are read as shell variables to configure the bootstrap.
  79
  80 For build prerequisites, environment variables like \$AUTOCONF and \$AMTAR
  81 are honored.
  82
  83 Gnulib sources can be fetched in various ways:
  84
  85  * If this package is in a git repository with a 'gnulib' submodule
  86    configured, then that submodule is initialized and updated and sources
  87    are fetched from there.  If \$GNULIB_SRCDIR is set (directly or via
  88    --gnulib-srcdir) and is a git repository, then it is used as a reference.
  89
  90  * Otherwise, if \$GNULIB_SRCDIR is set (directly or via --gnulib-srcdir),
  91    then sources are fetched from that local directory.  If it is a git
  92    repository and \$GNULIB_REVISION is set, then that revision is checked
  93    out.
  94
  95  * Otherwise, if this package is in a git repository with a 'gnulib'
  96    submodule configured, then that submodule is initialized and updated and
  97    sources are fetched from there.
  98
  99  * Otherwise, if the 'gnulib' directory does not exist, Gnulib sources are
 100    cloned into that directory using git from \$GNULIB_URL, defaulting to
 101    $default_gnulib_url.
 102    If \$GNULIB_REVISION is set, then that revision is checked out.
 103
 104  * Otherwise, the existing Gnulib sources in the 'gnulib' directory are
 105    used.  If it is a git repository and \$GNULIB_REVISION is set, then that
 106    revision is checked out.
 107
 108 If you maintain a package and want to pin a particular revision of the
 109 Gnulib sources that has been tested with your package, then there are two
 110 possible approaches: either configure a 'gnulib' submodule with the
 111 appropriate revision, or set \$GNULIB_REVISION (and if necessary
 112 \$GNULIB_URL) in $me.conf.
 113
 114 Running without arguments will suffice in most cases.
 115 EOF
 116 }
 117
 118 # warnf_ FORMAT-STRING ARG1...
 119 warnf_ ()
 120 {
 121   warnf_format_=$1
 122   shift
 123   nl='
 124 '
 125   case $* in
 126     *$nl*) me_=$(printf "$me"|tr "$nl|" '??')
 127        printf "$warnf_format_" "$@" | sed "s|^|$me_: |" ;;
 128     *) printf "$me: $warnf_format_" "$@" ;;
 129   esac >&2
 130 }
 131
 132 # warn_ WORD1...
 133 warn_ ()
 134 {
 135   # If IFS does not start with ' ', set it and emit the warning in a subshell.
 136   case $IFS in
 137     ' '*) warnf_ '%s\n' "$*";;
 138     *)    (IFS=' '; warn_ "$@");;
 139   esac
 140 }
 141
 142 # die WORD1...
 143 die() { warn_ "$@"; exit 1; }
 144
 145 # Configuration.
 146
 147 # Name of the Makefile.am
 148 gnulib_mk=gnulib.mk
 149
 150 # List of gnulib modules needed.
 151 gnulib_modules=
 152
 153 # Any gnulib files needed that are not in modules.
 154 gnulib_files=
 155
 156 : ${AUTOPOINT=autopoint}
 157 : ${AUTORECONF=autoreconf}
 158
 159 # A function to be called for each unrecognized option.  Returns 0 if
 160 # the option in $1 has been processed by the function.  Returns 1 if
 161 # the option has not been processed by the function.  Override it via
 162 # your own definition in bootstrap.conf
 163
 164 bootstrap_option_hook() { return 1; }
 165
 166 # A function to be called in order to print the --help information
 167 # corresponding to user-defined command-line options.
 168
 169 bootstrap_print_option_usage_hook() { :; }
 170
 171 # A function to be called right after gnulib-tool is run.
 172 # Override it via your own definition in bootstrap.conf.
 173 bootstrap_post_import_hook() { :; }
 174
 175 # A function to be called after everything else in this script.
 176 # Override it via your own definition in bootstrap.conf.
 177 bootstrap_epilogue() { :; }
 178
 179 # The command to download all .po files for a specified domain into a
 180 # specified directory.  Fill in the first %s with the destination
 181 # directory and the second with the domain name.
 182 po_download_command_format=\
 183 "wget --mirror --level=1 -nd -nv -A.po -P '%s' \
 184  https://translationproject.org/latest/%s/"
 185
 186 # Prefer a non-empty tarname (4th argument of AC_INIT if given), else
 187 # fall back to the package name (1st argument with munging)
 188 extract_package_name='
 189   /^AC_INIT(\[*/{
 190      s///
 191      /^[^,]*,[^,]*,[^,]*,[ []*\([^][ ,)]\)/{
 192        s//\1/
 193        s/[],)].*//
 194        p
 195        q
 196      }
 197      s/[],)].*//
 198      s/^GNU //
 199      y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
 200      s/[^abcdefghijklmnopqrstuvwxyz0123456789_]/-/g
 201      p
 202   }
 203 '
 204 package=$(sed -n "$extract_package_name" configure.ac) \
 205   || die 'cannot find package name in configure.ac'
 206 gnulib_name=lib$package
 207
 208 build_aux=build-aux
 209 source_base=lib
 210 m4_base=m4
 211 doc_base=doc
 212 tests_base=tests
 213 gnulib_extra_files="
 214         build-aux/install-sh
 215         build-aux/mdate-sh
 216         build-aux/texinfo.tex
 217         build-aux/depcomp
 218         build-aux/config.guess
 219         build-aux/config.sub
 220         doc/INSTALL
 221 "
 222
 223 # Additional gnulib-tool options to use.  Use "\newline" to break lines.
 224 gnulib_tool_option_extras=
 225
 226 # Other locale categories that need message catalogs.
 227 EXTRA_LOCALE_CATEGORIES=
 228
 229 # Additional xgettext options to use.  Use "\\\newline" to break lines.
 230 XGETTEXT_OPTIONS='\\\
 231  --flag=_:1:pass-c-format\\\
 232  --flag=N_:1:pass-c-format\\\
 233  --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 234 '
 235
 236 # Package bug report address and copyright holder for gettext files
 237 COPYRIGHT_HOLDER='Free Software Foundation, Inc.'
 238 MSGID_BUGS_ADDRESS=bug-$package@gnu.org
 239
 240 # Files we don't want to import.
 241 excluded_files=
 242
 243 # File that should exist in the top directory of a checked out hierarchy,
 244 # but not in a distribution tarball.
 245 checkout_only_file=README-hacking
 246
 247 # Whether to use copies instead of symlinks.
 248 copy=false
 249
 250 # Set this to '.cvsignore .gitignore' in bootstrap.conf if you want
 251 # those files to be generated in directories like lib/, m4/, and po/.
 252 # Or set it to 'auto' to make this script select which to use based
 253 # on which version control system (if any) is used in the source directory.
 254 vc_ignore=auto
 255
 256 # Set this to true in bootstrap.conf to enable --bootstrap-sync by
 257 # default.
 258 bootstrap_sync=false
 259
 260 # Use git to update gnulib sources
 261 use_git=true
 262
 263 check_exists() {
 264   if test "$1" = "--verbose"; then
 265     ($2 --version </dev/null) >/dev/null 2>&1
 266     if test $? -ge 126; then
 267       # If not found, run with diagnostics as one may be
 268       # presented with env variables to set to find the right version
 269       ($2 --version </dev/null)
 270     fi
 271   else
 272     ($1 --version </dev/null) >/dev/null 2>&1
 273   fi
 274
 275   test $? -lt 126
 276 }
 277
 278 # find_tool ENVVAR NAMES...
 279 # -------------------------
 280 # Search for a required program.  Use the value of ENVVAR, if set,
 281 # otherwise find the first of the NAMES that can be run.
 282 # If found, set ENVVAR to the program name, die otherwise.
 283 #
 284 # FIXME: code duplication, see also gnu-web-doc-update.
 285 find_tool ()
 286 {
 287   find_tool_envvar=$1
 288   shift
 289   find_tool_names=$@
 290   eval "find_tool_res=\$$find_tool_envvar"
 291   if test x"$find_tool_res" = x; then
 292     for i; do
 293       if check_exists $i; then
 294         find_tool_res=$i
 295         break
 296       fi
 297     done
 298   fi
 299   if test x"$find_tool_res" = x; then
 300     warn_ "one of these is required: $find_tool_names;"
 301     die   "alternatively set $find_tool_envvar to a compatible tool"
 302   fi
 303   eval "$find_tool_envvar=\$find_tool_res"
 304   eval "export $find_tool_envvar"
 305 }
 306
 307 # Override the default configuration, if necessary.
 308 # Make sure that bootstrap.conf is sourced from the current directory
 309 # if we were invoked as "sh bootstrap".
 310 case "$0" in
 311   */*) test -r "$0.conf" && . "$0.conf" ;;
 312   *) test -r "$0.conf" && . ./"$0.conf" ;;
 313 esac
 314
 315 if test "$vc_ignore" = auto; then
 316   vc_ignore=
 317   test -d .git && vc_ignore=.gitignore
 318   test -d CVS && vc_ignore="$vc_ignore .cvsignore"
 319 fi
 320
 321 if test x"$gnulib_modules$gnulib_files$gnulib_extra_files" = x; then
 322   use_gnulib=false
 323 else
 324   use_gnulib=true
 325 fi
 326
 327 # Translate configuration into internal form.
 328
 329 # Parse options.
 330
 331 for option
 332 do
 333   case $option in
 334   --help)
 335     usage
 336     exit;;
 337   --gnulib-srcdir=*)
 338     GNULIB_SRCDIR=${option#--gnulib-srcdir=};;
 339   --skip-po)
 340     SKIP_PO=t;;
 341   --force)
 342     checkout_only_file=;;
 343   --copy)
 344     copy=true;;
 345   --bootstrap-sync)
 346     bootstrap_sync=true;;
 347   --no-bootstrap-sync)
 348     bootstrap_sync=false;;
 349   --no-git)
 350     use_git=false;;
 351   *)
 352     bootstrap_option_hook $option || die "$option: unknown option";;
 353   esac
 354 done
 355
 356 $use_git || test -d "$GNULIB_SRCDIR" \
 357   || die "Error: --no-git requires --gnulib-srcdir"
 358
 359 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
 360   die "Bootstrapping from a non-checked-out distribution is risky."
 361 fi
 362
 363 # Strip blank and comment lines to leave significant entries.
 364 gitignore_entries() {
 365   sed '/^#/d; /^$/d' "$@"
 366 }
 367
 368 # If $STR is not already on a line by itself in $FILE, insert it at the start.
 369 # Entries are inserted at the start of the ignore list to ensure existing
 370 # entries starting with ! are not overridden.  Such entries support
 371 # whitelisting exceptions after a more generic blacklist pattern.
 372 insert_if_absent() {
 373   file=$1
 374   str=$2
 375   test -f $file || touch $file
 376   test -r $file || die "Error: failed to read ignore file: $file"
 377   duplicate_entries=$(gitignore_entries $file | sort | uniq -d)
 378   if [ "$duplicate_entries" ] ; then
 379     die "Error: Duplicate entries in $file: " $duplicate_entries
 380   fi
 381   linesold=$(gitignore_entries $file | wc -l)
 382   linesnew=$( { echo "$str"; cat $file; } | gitignore_entries | sort -u | wc -l)
 383   if [ $linesold != $linesnew ] ; then
 384     { echo "$str" | cat - $file > $file.bak && mv $file.bak $file; } \
 385       || die "insert_if_absent $file $str: failed"
 386   fi
 387 }
 388
 389 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
 390 # insert_if_absent.
 391 insert_vc_ignore() {
 392   vc_ignore_file="$1"
 393   pattern="$2"
 394   case $vc_ignore_file in
 395   *.gitignore)
 396     # A .gitignore entry that does not start with '/' applies
 397     # recursively to subdirectories, so prepend '/' to every
 398     # .gitignore entry.
 399     pattern=$(echo "$pattern" | sed s,^,/,);;
 400   esac
 401   insert_if_absent "$vc_ignore_file" "$pattern"
 402 }
 403
 404 # Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
 405 found_aux_dir=no
 406 grep '^[         ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
 407     >/dev/null && found_aux_dir=yes
 408 grep '^[         ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
 409     >/dev/null && found_aux_dir=yes
 410 test $found_aux_dir = yes \
 411   || die "configure.ac lacks 'AC_CONFIG_AUX_DIR([$build_aux])'; add it"
 412
 413 # If $build_aux doesn't exist, create it now, otherwise some bits
 414 # below will malfunction.  If creating it, also mark it as ignored.
 415 if test ! -d $build_aux; then
 416   mkdir $build_aux
 417   for dot_ig in x $vc_ignore; do
 418     test $dot_ig = x && continue
 419     insert_vc_ignore $dot_ig $build_aux
 420   done
 421 fi
 422
 423 # Note this deviates from the version comparison in automake
 424 # in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a
 425 # but this should suffice as we won't be specifying old
 426 # version formats or redundant trailing .0 in bootstrap.conf.
 427 # If we did want full compatibility then we should probably
 428 # use m4_version_compare from autoconf.
 429 sort_ver() { # sort -V is not generally available
 430   ver1="$1"
 431   ver2="$2"
 432
 433   # split on '.' and compare each component
 434   i=1
 435   while : ; do
 436     p1=$(echo "$ver1" | cut -d. -f$i)
 437     p2=$(echo "$ver2" | cut -d. -f$i)
 438     if [ ! "$p1" ]; then
 439       echo "$1 $2"
 440       break
 441     elif [ ! "$p2" ]; then
 442       echo "$2 $1"
 443       break
 444     elif [ ! "$p1" = "$p2" ]; then
 445       if [ "$p1" -gt "$p2" ] 2>/dev/null; then # numeric comparison
 446         echo "$2 $1"
 447       elif [ "$p2" -gt "$p1" ] 2>/dev/null; then # numeric comparison
 448         echo "$1 $2"
 449       else # numeric, then lexicographic comparison
 450         lp=$(printf "$p1\n$p2\n" | LANG=C sort -n | tail -n1)
 451         if [ "$lp" = "$p2" ]; then
 452           echo "$1 $2"
 453         else
 454           echo "$2 $1"
 455         fi
 456       fi
 457       break
 458     fi
 459     i=$(($i+1))
 460   done
 461 }
 462
 463 get_version_sed='
 464 # Move version to start of line.
 465 s/.*[v ]\([0-9]\)/\1/
 466
 467 # Skip lines that do not start with version.
 468 /^[0-9]/!d
 469
 470 # Remove characters after the version.
 471 s/[^.a-z0-9-].*//
 472
 473 # The first component must be digits only.
 474 s/^\([0-9]*\)[a-z-].*/\1/
 475
 476 #the following essentially does s/5.005/5.5/
 477 s/\.0*\([1-9]\)/.\1/g
 478 p
 479 q'
 480
 481 get_version() {
 482   app=$1
 483
 484   $app --version >/dev/null 2>&1 || { $app --version; return 1; }
 485
 486   $app --version 2>&1 | sed -n "$get_version_sed"
 487 }
 488
 489 check_versions() {
 490   ret=0
 491
 492   while read app req_ver; do
 493     # We only need libtoolize from the libtool package.
 494     if test "$app" = libtool; then
 495       app=libtoolize
 496     fi
 497     # Exempt git if --no-git is in effect.
 498     if test "$app" = git; then
 499       $use_git || continue
 500     fi
 501     # Honor $APP variables ($TAR, $AUTOCONF, etc.)
 502     appvar=$(echo $app | LC_ALL=C tr '[a-z]-' '[A-Z]_')
 503     test "$appvar" = TAR && appvar=AMTAR
 504     case $appvar in
 505         GZIP) ;; # Do not use $GZIP:  it contains gzip options.
 506         PERL::*) ;; # Keep perl modules as-is
 507         *) eval "app=\${$appvar-$app}" ;;
 508     esac
 509
 510     # Handle the still-experimental Automake-NG programs specially.
 511     # They remain named as the mainstream Automake programs ("automake",
 512     # and "aclocal") to avoid gratuitous incompatibilities with
 513     # pre-existing usages (by, say, autoreconf, or custom autogen.sh
 514     # scripts), but correctly identify themselves (as being part of
 515     # "GNU automake-ng") when asked their version.
 516     case $app in
 517       automake-ng|aclocal-ng)
 518         app=${app%-ng}
 519         ($app --version | grep '(GNU automake-ng)') >/dev/null 2>&1 || {
 520           warn_ "Error: '$app' not found or not from Automake-NG"
 521           ret=1
 522           continue
 523         } ;;
 524       # Another check is for perl modules.  These can be written as
 525       # e.g. perl::XML::XPath in case of XML::XPath module, etc.
 526       perl::*)
 527         # Extract module name
 528         app="${app#perl::}"
 529         if ! $PERL -m"$app" -e 'exit 0' >/dev/null 2>&1; then
 530           warn_ "Error: perl module '$app' not found"
 531           ret=1
 532         fi
 533         continue
 534         ;;
 535     esac
 536     if [ "$req_ver" = "-" ]; then
 537       # Merely require app to exist; not all prereq apps are well-behaved
 538       # so we have to rely on $? rather than get_version.
 539       if ! check_exists --verbose $app; then
 540         warn_ "Error: '$app' not found"
 541         ret=1
 542       fi
 543     else
 544       # Require app to produce a new enough version string.
 545       inst_ver=$(get_version $app)
 546       if [ ! "$inst_ver" ]; then
 547         warn_ "Error: '$app' not found"
 548         ret=1
 549       else
 550         latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)
 551         if [ ! "$latest_ver" = "$inst_ver" ]; then
 552           warnf_ '%s\n'                                        \
 553               "Error: '$app' version == $inst_ver is too old"  \
 554               "       '$app' version >= $req_ver is required"
 555           ret=1
 556         fi
 557       fi
 558     fi
 559   done
 560
 561   return $ret
 562 }
 563
 564 print_versions() {
 565   echo "Program    Min_version"
 566   echo "----------------------"
 567   printf %s "$buildreq"
 568   echo "----------------------"
 569   # can't depend on column -t
 570 }
 571
 572 # Find sha1sum, named gsha1sum on MacPorts, shasum on Mac OS X 10.6.
 573 # Also find the compatible sha1 utility on the BSDs
 574 if test x"$SKIP_PO" = x; then
 575   find_tool SHA1SUM sha1sum gsha1sum shasum sha1
 576 fi
 577
 578 use_libtool=0
 579 # We'd like to use grep -E, to see if any of LT_INIT,
 580 # AC_PROG_LIBTOOL, AM_PROG_LIBTOOL is used in configure.ac,
 581 # but that's not portable enough (e.g., for Solaris).
 582 grep '^[         ]*A[CM]_PROG_LIBTOOL' configure.ac >/dev/null \
 583   && use_libtool=1
 584 grep '^[         ]*LT_INIT' configure.ac >/dev/null \
 585   && use_libtool=1
 586 if test $use_libtool = 1; then
 587   find_tool LIBTOOLIZE glibtoolize libtoolize
 588 fi
 589
 590 # gnulib-tool requires at least automake and autoconf.
 591 # If either is not listed, add it (with minimum version) as a prerequisite.
 592 case $buildreq in
 593   *automake*) ;;
 594   *) buildreq="automake 1.9
 595 $buildreq" ;;
 596 esac
 597 case $buildreq in
 598   *autoconf*) ;;
 599   *) buildreq="autoconf 2.59
 600 $buildreq" ;;
 601 esac
 602
 603 # When we can deduce that gnulib-tool will require patch,
 604 # and when patch is not already listed as a prerequisite, add it, too.
 605 if test -d "$local_gl_dir" \
 606     && ! find "$local_gl_dir" -name '*.diff' -exec false {} +; then
 607   case $buildreq in
 608     *patch*) ;;
 609     *) buildreq="patch -
 610 $buildreq" ;;
 611   esac
 612 fi
 613
 614 if ! printf "$buildreq" | check_versions; then
 615   echo >&2
 616   if test -f README-prereq; then
 617     die "See README-prereq for how to get the prerequisite programs"
 618   else
 619     die "Please install the prerequisite programs"
 620   fi
 621 fi
 622
 623 # Warn the user if autom4te appears to be broken; this causes known
 624 # issues with at least gettext 0.18.3.
 625 probe=$(echo 'm4_quote([hi])' | autom4te -l M4sugar -t 'm4_quote:$%' -)
 626 if test "x$probe" != xhi; then
 627   warn_ "WARNING: your autom4te wrapper eats stdin;"
 628   warn_ "if bootstrap fails, consider upgrading your autotools"
 629 fi
 630
 631 echo "$0: Bootstrapping from checked-out $package sources..."
 632
 633 # See if we can use gnulib's git-merge-changelog merge driver.
 634 if $use_git && test -d .git && check_exists git; then
 635   if git config merge.merge-changelog.driver >/dev/null ; then
 636     :
 637   elif check_exists git-merge-changelog; then
 638     echo "$0: initializing git-merge-changelog driver"
 639     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
 640     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
 641   else
 642     echo "$0: consider installing git-merge-changelog from gnulib"
 643   fi
 644 fi
 645
 646
 647 cleanup_gnulib() {
 648   status=$?
 649   rm -fr "$gnulib_path"
 650   exit $status
 651 }
 652
 653 git_modules_config () {
 654   test -f .gitmodules && git config --file .gitmodules "$@"
 655 }
 656
 657 if $use_gnulib; then
 658   if $use_git; then
 659     gnulib_path=$(git_modules_config submodule.gnulib.path)
 660     test -z "$gnulib_path" && gnulib_path=gnulib
 661   fi
 662
 663   # Get gnulib files.  Populate $GNULIB_SRCDIR, possibly updating a
 664   # submodule, for use in the rest of the script.
 665
 666   case ${GNULIB_SRCDIR--} in
 667   -)
 668     # Note that $use_git is necessarily true in this case.
 669     if git_modules_config submodule.gnulib.url >/dev/null; then
 670       echo "$0: getting gnulib files..."
 671       git submodule init -- "$gnulib_path" || exit $?
 672       git submodule update -- "$gnulib_path" || exit $?
 673
 674     elif [ ! -d "$gnulib_path" ]; then
 675       echo "$0: getting gnulib files..."
 676
 677       trap cleanup_gnulib 1 2 13 15
 678
 679       shallow=
 680       if test -z "$GNULIB_REVISION"; then
 681         git clone -h 2>&1 | grep -- --depth > /dev/null && shallow='--depth 2'
 682       fi
 683       git clone $shallow ${GNULIB_URL:-$default_gnulib_url} "$gnulib_path" \
 684         || cleanup_gnulib
 685
 686       trap - 1 2 13 15
 687     fi
 688     GNULIB_SRCDIR=$gnulib_path
 689     ;;
 690   *)
 691     # Use GNULIB_SRCDIR directly or as a reference.
 692     if $use_git && test -d "$GNULIB_SRCDIR"/.git && \
 693           git_modules_config submodule.gnulib.url >/dev/null; then
 694       echo "$0: getting gnulib files..."
 695       if git submodule -h|grep -- --reference > /dev/null; then
 696         # Prefer the one-liner available in git 1.6.4 or newer.
 697         git submodule update --init --reference "$GNULIB_SRCDIR" \
 698           "$gnulib_path" || exit $?
 699       else
 700         # This fallback allows at least git 1.5.5.
 701         if test -f "$gnulib_path"/gnulib-tool; then
 702           # Since file already exists, assume submodule init already complete.
 703           git submodule update -- "$gnulib_path" || exit $?
 704         else
 705           # Older git can't clone into an empty directory.
 706           rmdir "$gnulib_path" 2>/dev/null
 707           git clone --reference "$GNULIB_SRCDIR" \
 708             "$(git_modules_config submodule.gnulib.url)" "$gnulib_path" \
 709             && git submodule init -- "$gnulib_path" \
 710             && git submodule update -- "$gnulib_path" \
 711             || exit $?
 712         fi
 713       fi
 714       GNULIB_SRCDIR=$gnulib_path
 715     fi
 716     ;;
 717   esac
 718
 719   if test -d "$GNULIB_SRCDIR"/.git && test -n "$GNULIB_REVISION" \
 720      && ! git_modules_config submodule.gnulib.url >/dev/null; then
 721     (cd "$GNULIB_SRCDIR" && git checkout "$GNULIB_REVISION") || cleanup_gnulib
 722   fi
 723
 724   # $GNULIB_SRCDIR now points to the version of gnulib to use, and
 725   # we no longer need to use git or $gnulib_path below here.
 726
 727   if $bootstrap_sync; then
 728     cmp -s "$0" "$GNULIB_SRCDIR/build-aux/bootstrap" || {
 729       echo "$0: updating bootstrap and restarting..."
 730       case $(sh -c 'echo "$1"' -- a) in
 731         a) ignored=--;;
 732         *) ignored=ignored;;
 733       esac
 734       exec sh -c \
 735         'cp "$1" "$2" && shift && exec "${CONFIG_SHELL-/bin/sh}" "$@"' \
 736         $ignored "$GNULIB_SRCDIR/build-aux/bootstrap" \
 737         "$0" "$@" --no-bootstrap-sync
 738     }
 739   fi
 740
 741   gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 742   <$gnulib_tool || exit $?
 743 fi
 744
 745 # Get translations.
 746
 747 download_po_files() {
 748   subdir=$1
 749   domain=$2
 750   echo "$me: getting translations into $subdir for $domain..."
 751   cmd=$(printf "$po_download_command_format" "$subdir" "$domain")
 752   eval "$cmd"
 753 }
 754
 755 # Mirror .po files to $po_dir/.reference and copy only the new
 756 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.
 757 # Note po files that exist locally only are left in $po_dir but will
 758 # not be included in LINGUAS and hence will not be distributed.
 759 update_po_files() {
 760   # Directory containing primary .po files.
 761   # Overwrite them only when we're sure a .po file is new.
 762   po_dir=$1
 763   domain=$2
 764
 765   # Mirror *.po files into this dir.
 766   # Usually contains *.s1 checksum files.
 767   ref_po_dir="$po_dir/.reference"
 768
 769   test -d $ref_po_dir || mkdir $ref_po_dir || return
 770   download_po_files $ref_po_dir $domain \
 771     && ls "$ref_po_dir"/*.po 2>/dev/null |
 772       sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS" || return
 773
 774   langs=$(cd $ref_po_dir && echo *.po | sed 's/\.po//g')
 775   test "$langs" = '*' && langs=x
 776   for po in $langs; do
 777     case $po in x) continue;; esac
 778     new_po="$ref_po_dir/$po.po"
 779     cksum_file="$ref_po_dir/$po.s1"
 780     if ! test -f "$cksum_file" ||
 781         ! test -f "$po_dir/$po.po" ||
 782         ! $SHA1SUM -c "$cksum_file" < "$new_po" > /dev/null 2>&1; then
 783       echo "$me: updated $po_dir/$po.po..."
 784       cp "$new_po" "$po_dir/$po.po" \
 785           && $SHA1SUM < "$new_po" > "$cksum_file" || return
 786     fi
 787   done
 788 }
 789
 790 case $SKIP_PO in
 791 '')
 792   if test -d po; then
 793     update_po_files po $package || exit
 794   fi
 795
 796   if test -d runtime-po; then
 797     update_po_files runtime-po $package-runtime || exit
 798   fi;;
 799 esac
 800
 801 symlink_to_dir()
 802 {
 803   src=$1/$2
 804   dst=${3-$2}
 805
 806   test -f "$src" && {
 807
 808     # If the destination directory doesn't exist, create it.
 809     # This is required at least for "lib/uniwidth/cjk.h".
 810     dst_dir=$(dirname "$dst")
 811     if ! test -d "$dst_dir"; then
 812       mkdir -p "$dst_dir"
 813
 814       # If we've just created a directory like lib/uniwidth,
 815       # tell version control system(s) it's ignorable.
 816       # FIXME: for now, this does only one level
 817       parent=$(dirname "$dst_dir")
 818       for dot_ig in x $vc_ignore; do
 819         test $dot_ig = x && continue
 820         ig=$parent/$dot_ig
 821         insert_vc_ignore $ig "${dst_dir##*/}"
 822       done
 823     fi
 824
 825     if $copy; then
 826       {
 827         test ! -h "$dst" || {
 828           echo "$me: rm -f $dst" &&
 829           rm -f "$dst"
 830         }
 831       } &&
 832       test -f "$dst" &&
 833       cmp -s "$src" "$dst" || {
 834         echo "$me: cp -fp $src $dst" &&
 835         cp -fp "$src" "$dst"
 836       }
 837     else
 838       # Leave any existing symlink alone, if it already points to the source,
 839       # so that broken build tools that care about symlink times
 840       # aren't confused into doing unnecessary builds.  Conversely, if the
 841       # existing symlink's timestamp is older than the source, make it afresh,
 842       # so that broken tools aren't confused into skipping needed builds.  See
 843       # <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00326.html>.
 844       test -h "$dst" &&
 845       src_ls=$(ls -diL "$src" 2>/dev/null) && set $src_ls && src_i=$1 &&
 846       dst_ls=$(ls -diL "$dst" 2>/dev/null) && set $dst_ls && dst_i=$1 &&
 847       test "$src_i" = "$dst_i" &&
 848       both_ls=$(ls -dt "$src" "$dst") &&
 849       test "X$both_ls" = "X$dst$nl$src" || {
 850         dot_dots=
 851         case $src in
 852         /*) ;;
 853         *)
 854           case /$dst/ in
 855           *//* | */../* | */./* | /*/*/*/*/*/)
 856              die "invalid symlink calculation: $src -> $dst";;
 857           /*/*/*/*/)    dot_dots=../../../;;
 858           /*/*/*/)      dot_dots=../../;;
 859           /*/*/)        dot_dots=../;;
 860           esac;;
 861         esac
 862
 863         echo "$me: ln -fs $dot_dots$src $dst" &&
 864         ln -fs "$dot_dots$src" "$dst"
 865       }
 866     fi
 867   }
 868 }
 869
 870 version_controlled_file() {
 871   parent=$1
 872   file=$2
 873   if test -d .git; then
 874     git rm -n "$file" > /dev/null 2>&1
 875   elif test -d .svn; then
 876     svn log -r HEAD "$file" > /dev/null 2>&1
 877   elif test -d CVS; then
 878     grep -F "/${file##*/}/" "$parent/CVS/Entries" 2>/dev/null |
 879              grep '^/[^/]*/[0-9]' > /dev/null
 880   else
 881     warn_ "no version control for $file?"
 882     false
 883   fi
 884 }
 885
 886 # NOTE: we have to be careful to run both autopoint and libtoolize
 887 # before gnulib-tool, since gnulib-tool is likely to provide newer
 888 # versions of files "installed" by these two programs.
 889 # Then, *after* gnulib-tool (see below), we have to be careful to
 890 # run autoreconf in such a way that it does not run either of these
 891 # two just-pre-run programs.
 892
 893 # Import from gettext.
 894 with_gettext=yes
 895 grep '^[         ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
 896     with_gettext=no
 897
 898 if test $with_gettext = yes || test $use_libtool = 1; then
 899
 900   tempbase=.bootstrap$$
 901   trap "rm -f $tempbase.0 $tempbase.1" 1 2 13 15
 902
 903   > $tempbase.0 > $tempbase.1 &&
 904   find . ! -type d -print | sort > $tempbase.0 || exit
 905
 906   if test $with_gettext = yes; then
 907     # Released autopoint has the tendency to install macros that have been
 908     # obsoleted in current gnulib, so run this before gnulib-tool.
 909     echo "$0: $AUTOPOINT --force"
 910     $AUTOPOINT --force || exit
 911   fi
 912
 913   # Autoreconf runs aclocal before libtoolize, which causes spurious
 914   # warnings if the initial aclocal is confused by the libtoolized
 915   # (or worse out-of-date) macro directory.
 916   # libtoolize 1.9b added the --install option; but we support back
 917   # to libtoolize 1.5.22, where the install action was default.
 918   if test $use_libtool = 1; then
 919     install=
 920     case $($LIBTOOLIZE --help) in
 921       *--install*) install=--install ;;
 922     esac
 923     echo "running: $LIBTOOLIZE $install --copy"
 924     $LIBTOOLIZE $install --copy
 925   fi
 926
 927   find . ! -type d -print | sort >$tempbase.1
 928   old_IFS=$IFS
 929   IFS=$nl
 930   for file in $(comm -13 $tempbase.0 $tempbase.1); do
 931     IFS=$old_IFS
 932     parent=${file%/*}
 933     version_controlled_file "$parent" "$file" || {
 934       for dot_ig in x $vc_ignore; do
 935         test $dot_ig = x && continue
 936         ig=$parent/$dot_ig
 937         insert_vc_ignore "$ig" "${file##*/}"
 938       done
 939     }
 940   done
 941   IFS=$old_IFS
 942
 943   rm -f $tempbase.0 $tempbase.1
 944   trap - 1 2 13 15
 945 fi
 946
 947 # Import from gnulib.
 948
 949 if $use_gnulib; then
 950   gnulib_tool_options="\
 951    --no-changelog\
 952    --aux-dir=$build_aux\
 953    --doc-base=$doc_base\
 954    --lib=$gnulib_name\
 955    --m4-base=$m4_base/\
 956    --source-base=$source_base/\
 957    --tests-base=$tests_base\
 958    --local-dir=$local_gl_dir\
 959    $gnulib_tool_option_extras\
 960   "
 961   if test $use_libtool = 1; then
 962     case "$gnulib_tool_options " in
 963       *' --libtool '*) ;;
 964       *) gnulib_tool_options="$gnulib_tool_options --libtool" ;;
 965     esac
 966   fi
 967   echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 968   $gnulib_tool $gnulib_tool_options --import $gnulib_modules \
 969     || die "gnulib-tool failed"
 970
 971   for file in $gnulib_files; do
 972     symlink_to_dir "$GNULIB_SRCDIR" $file \
 973       || die "failed to symlink $file"
 974   done
 975 fi
 976
 977 bootstrap_post_import_hook \
 978   || die "bootstrap_post_import_hook failed"
 979
 980 # Don't proceed if there are uninitialized submodules.  In particular,
 981 # the next step will remove dangling links, which might be links into
 982 # uninitialized submodules.
 983 #
 984 # Uninitialized submodules are listed with an initial dash.
 985 if $use_git && git submodule | grep '^-' >/dev/null; then
 986   die "some git submodules are not initialized. "     \
 987       "Run 'git submodule update --init' and bootstrap again."
 988 fi
 989
 990 # Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
 991 # gnulib-populated directories.  Such .m4 files would cause aclocal to fail.
 992 # The following requires GNU find 4.2.3 or newer.  Considering the usual
 993 # portability constraints of this script, that may seem a very demanding
 994 # requirement, but it should be ok.  Ignore any failure, which is fine,
 995 # since this is only a convenience to help developers avoid the relatively
 996 # unusual case in which a symlinked-to .m4 file is git-removed from gnulib
 997 # between successive runs of this script.
 998 find "$m4_base" "$source_base" \
 999   -depth \( -name '*.m4' -o -name '*.[ch]' \) \
1000   -type l -xtype l -delete > /dev/null 2>&1
1001
1002 # Invoke autoreconf with --force --install to ensure upgrades of tools
1003 # such as ylwrap.
1004 AUTORECONFFLAGS="--verbose --install --force -I $m4_base $ACLOCAL_FLAGS"
1005
1006 # Some systems (RHEL 5) are using ancient autotools, for which the
1007 # --no-recursive option had not been invented.  Detect that lack and
1008 # omit the option when it's not supported.  FIXME in 2017: remove this
1009 # hack when RHEL 5 autotools are updated, or when they become irrelevant.
1010 case $($AUTORECONF --help) in
1011   *--no-recursive*) AUTORECONFFLAGS="$AUTORECONFFLAGS --no-recursive";;
1012 esac
1013
1014 # Tell autoreconf not to invoke autopoint or libtoolize; they were run above.
1015 echo "running: AUTOPOINT=true LIBTOOLIZE=true $AUTORECONF $AUTORECONFFLAGS"
1016 AUTOPOINT=true LIBTOOLIZE=true $AUTORECONF $AUTORECONFFLAGS \
1017   || die "autoreconf failed"
1018
1019 # Get some extra files from gnulib, overriding existing files.
1020 for file in $gnulib_extra_files; do
1021   case $file in
1022   */INSTALL) dst=INSTALL;;
1023   build-aux/*) dst=$build_aux/${file#build-aux/};;
1024   *) dst=$file;;
1025   esac
1026   symlink_to_dir "$GNULIB_SRCDIR" $file $dst \
1027     || die "failed to symlink $file"
1028 done
1029
1030 if test $with_gettext = yes; then
1031   # Create gettext configuration.
1032   echo "$0: Creating po/Makevars from po/Makevars.template ..."
1033   rm -f po/Makevars
1034   sed '
1035     /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/
1036     /^COPYRIGHT_HOLDER *=/s/=.*/= '"$COPYRIGHT_HOLDER"'/
1037     /^MSGID_BUGS_ADDRESS *=/s|=.*|= '"$MSGID_BUGS_ADDRESS"'|
1038     /^XGETTEXT_OPTIONS *=/{
1039       s/$/ \\/
1040       a\
1041           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
1042     }
1043   ' po/Makevars.template >po/Makevars \
1044     || die 'cannot generate po/Makevars'
1045
1046   # If the 'gettext' module is in use, grab the latest Makefile.in.in.
1047   # If only the 'gettext-h' module is in use, assume autopoint already
1048   # put the correct version of this file into place.
1049   case $gnulib_modules in
1050   *gettext-h*) ;;
1051   *gettext*)
1052     cp $GNULIB_SRCDIR/build-aux/po/Makefile.in.in po/Makefile.in.in \
1053       || die "cannot create po/Makefile.in.in"
1054     ;;
1055   esac
1056
1057   if test -d runtime-po; then
1058     # Similarly for runtime-po/Makevars, but not quite the same.
1059     rm -f runtime-po/Makevars
1060     sed '
1061       /^DOMAIN *=.*/s/=.*/= '"$package"'-runtime/
1062       /^subdir *=.*/s/=.*/= runtime-po/
1063       /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
1064       /^XGETTEXT_OPTIONS *=/{
1065         s/$/ \\/
1066         a\
1067             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
1068       }
1069     ' po/Makevars.template >runtime-po/Makevars \
1070     || die 'cannot generate runtime-po/Makevars'
1071
1072     # Copy identical files from po to runtime-po.
1073     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)
1074   fi
1075 fi
1076
1077 bootstrap_epilogue
1078
1079 echo "$0: done.  Now you can run './configure'."
1080
1081 # Local variables:
1082 # eval: (add-hook 'before-save-hook 'time-stamp)
1083 # time-stamp-start: "scriptversion="
1084 # time-stamp-format: "%:y-%02m-%02d.%02H"
1085 # time-stamp-time-zone: "UTC0"
1086 # time-stamp-end: "; # UTC"
1087 # End: