make-version.pl

   1 #!/usr/bin/perl -w
   2 #
   3 # Copyright 2004 Jörg Mayer (see AUTHORS file)
   4 #
   5 # $Id$
   6 #
   7 # Wireshark - Network traffic analyzer
   8 # By Gerald Combs <gerald@wireshark.org>
   9 # Copyright 1998 Gerald Combs
  10 #
  11 # This program is free software; you can redistribute it and/or
  12 # modify it under the terms of the GNU General Public License
  13 # as published by the Free Software Foundation; either version 2
  14 # of the License, or (at your option) any later version.
  15 #
  16 # This program is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program; if not, write to the Free Software
  23 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  24
  25 # See below for usage
  26 #
  27 # If "version.conf" is present, it is parsed for configuration values.
  28 # Possible values are:
  29 #
  30 #   enable     - Enable or disable versioning.  Zero (0) disables, nonzero
  31 #                enables.
  32 #   svn_client - Use svn client i.s.o. ugly internal SVN file hack
  33 #   format     - A strftime() formatted string to use as a template for
  34 #                the version string. The sequence "%#" will substitute
  35 #                the SVN revision number.
  36 #   pkg_enable - Enable or disable local package versioning.
  37 #   pkg_format - Like "format", but used for the local package version.
  38 #
  39 # If run with the "-r" or "--set-release" argument the AC_INIT macro in
  40 # configure.ac and the VERSION macro in config.nmake will have the
  41 # pkg_format template appended to the version number. version.h will
  42 # _not_ be generated if either argument is present.
  43 #
  44 # Default configuration:
  45 #
  46 # enable: 1
  47 # svn_client: 1
  48 # format: SVN %Y%m%d%H%M%S
  49 # pkg_enable: 1
  50 # pkg_format: -%#
  51
  52 # XXX - We're pretty dumb about the "%#" substitution, and about having
  53 # spaces in the package format.
  54
  55 use strict;
  56
  57 use Time::Local;
  58 use File::Basename;
  59 use POSIX qw(strftime);
  60 use Getopt::Long;
  61 use Pod::Usage;
  62 use IO::Handle;
  63 use English;
  64
  65 my $version_file = 'version.h';
  66 my $package_string = "";
  67 my $vconf_file = 'version.conf';
  68 my $tortoise_file = "tortoise_template";
  69 my $last_change = 0;
  70 my $num_commits = 0;
  71 my $commit_id = '';
  72 my $repo_branch = "unknown";
  73 my $git_description = undef;
  74 my $get_svn = 0;
  75 my $set_svn = 0;
  76 my $set_version = 0;
  77 my $set_release = 0;
  78 my %version_pref = (
  79         "version_major" => 1,
  80         "version_minor" => 11,
  81         "version_micro" => 3,
  82         "version_build" => 0,
  83
  84         "enable"        => 1,
  85         "git_client"    => 0,
  86         "svn_client"    => 1,
  87         "tortoise_svn"  => 0,
  88         "format"        => "git %Y%m%d%H%M%S",
  89         "is_release"    => 0,
  90
  91         # Normal development builds
  92         "pkg_enable" => 1,
  93         "pkg_format" => "-%#",
  94
  95         # Development releases
  96         #"pkg_enable" => 0,
  97         #"pkg_format" => "",
  98         );
  99 my $srcdir = ".";
 100 my $info_cmd = "";
 101
 102 # Ensure we run with correct locale
 103 $ENV{LANG} = "C";
 104 $ENV{LC_ALL} = "C";
 105 $ENV{GIT_PAGER} = "";
 106
 107 # Run "svn info".  Parse out the most recent modification time and the
 108 # revision number.
 109 sub read_repo_info {
 110         my $line;
 111         my $version_format = $version_pref{"format"};
 112         my $package_format = "";
 113         my $in_entries = 0;
 114         my $svn_name;
 115         my $repo_version;
 116         my $repo_root = undef;
 117         my $repo_url = undef;
 118         my $do_hack = 1;
 119         my $info_source = "Unknown";
 120
 121         if ($version_pref{"pkg_enable"}) {
 122                 $package_format = $version_pref{"pkg_format"};
 123         }
 124
 125         if (-d "$srcdir/.git" && ! -d "$srcdir/.git/svn") {
 126                 $info_source = "Command line (git)";
 127                 $version_pref{"git_client"} = 1;
 128         } elsif (-d "$srcdir/.svn" or -d "$srcdir/../.svn") {
 129                 $info_source = "Command line (svn info)";
 130                 $info_cmd = "svn info $srcdir";
 131         } elsif (-d "$srcdir/.git/svn") {
 132                 $info_source = "Command line (git-svn)";
 133                 $info_cmd = "(cd $srcdir; git svn info)";
 134         }
 135
 136         #Git can give us:
 137         #
 138         # A big ugly hash: git rev-parse HEAD
 139         # 1ddc83849075addb0cac69a6fe3782f4325337b9
 140         #
 141         # A small ugly hash: git rev-parse --short HEAD
 142         # 1ddc838
 143         #
 144         # The upstream branch path: git rev-parse --abbrev-ref --symbolic-full-name origin
 145         # origin/master-1.8
 146         #
 147         # A version description: git describe --tags --dirty
 148         # wireshark-1.8.12-15-g1ddc838
 149         #
 150         # Number of commits in this branch: git rev-list --count HEAD
 151         # 48879
 152         #
 153         # Number of commits since 1.8.0: git rev-list --count 5e212d72ce098a7fec4332cbe6c22fcda796a018..HEAD
 154         # 320
 155         #
 156         # Refs: git ls-remote code.wireshark.org:wireshark
 157         # ea19c7f952ce9fc53fe4c223f1d9d6797346258b (r48972, changed version to 1.11.0)
 158
 159         if ($version_pref{"git_client"}) {
 160                 eval {
 161                         use warnings "all";
 162                         no warnings "all";
 163
 164                         chomp($line = qx{git --git-dir=$srcdir/.git log -1 --pretty=format:%at});
 165                         if ($? == 0 && length($line) > 1) {
 166                                 $last_change = $line;
 167                         }
 168
 169                         # Commits since last annotated tag.
 170                         chomp($line = qx{git --git-dir=$srcdir/.git describe --long --always});
 171                         if ($? == 0 && length($line) > 1) {
 172                                 my @parts = split(/-/, $line);
 173                                 $num_commits = $parts[-2];
 174                                 $commit_id = $parts[-1];
 175                         }
 176
 177                         # Current short hash prefixed with "g"
 178                         chomp($line = qx{git --git-dir=$srcdir/.git rev-parse --short HEAD});
 179                         if ($? == 0 && length($line) > 1) {
 180                         }
 181
 182                         chomp($line = qx{git --git-dir=$srcdir/.git ls-remote --get-url origin});
 183                         if ($? == 0 && length($line) > 1) {
 184                                 $repo_url = $line;
 185                         }
 186
 187                         # Probably not quite what we're looking for
 188                         chomp($line = qx{git --git-dir=$srcdir/.git rev-parse --abbrev-ref --symbolic-full-name origin});
 189                         if ($? == 0 && length($line) > 1) {
 190                                 $repo_branch = basename($line);
 191                         }
 192
 193                         chomp($line = qx{git --git-dir=$srcdir/.git describe --dirty --match "v*"});
 194                         if ($? == 0 && length($line) > 1) {
 195                                 $git_description = "wireshark-" . substr($line, 1);
 196                         }
 197
 198                         1;
 199                 };
 200
 201                 if ($last_change && $num_commits && $repo_url && $repo_branch) {
 202                         $do_hack = 0;
 203                 }
 204         } elsif ($version_pref{"svn_client"}) {
 205                 eval {
 206                         use warnings "all";
 207                         no warnings "all";
 208                         $line = qx{$info_cmd};
 209                         if (defined($line)) {
 210                                 if ($line =~ /Last Changed Date: (\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/) {
 211                                         $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
 212                                 }
 213                                 if ($line =~ /Last Changed Rev: (\d+)/) {
 214                                         $num_commits = $1;
 215                                 }
 216                                 if ($line =~ /URL: (\S+)/) {
 217                                         $repo_url = $1;
 218                                 }
 219                                 if ($line =~ /Repository Root: (\S+)/) {
 220                                         $repo_root = $1;
 221                                 }
 222                         }
 223                         1;
 224                 };
 225
 226                 if ($last_change && $num_commits && $repo_url && $repo_root) {
 227                         $do_hack = 0;
 228                 }
 229         } elsif ($version_pref{"tortoise_svn"}) {
 230                 # Dynamically generic template file needed by TortoiseSVN
 231                 open(TORTOISE, ">$tortoise_file");
 232                 print TORTOISE "#define GITVERSION \"\$WCREV\$\"\r\n";
 233                 print TORTOISE "#define GITBRANCH \"\$WCURL\$\"\r\n";
 234                 close(TORTOISE);
 235
 236                 $info_source = "Command line (SubWCRev)";
 237                 $info_cmd = "SubWCRev $srcdir $tortoise_file $version_file";
 238                 my $tortoise = system($info_cmd);
 239                 if ($tortoise == 0) {
 240                         $do_hack = 0;
 241                 }
 242
 243                 #clean up the template file
 244                 unlink($tortoise_file);
 245         }
 246
 247         if ($num_commits == 0) {
 248                 # Fall back to config.nmake
 249                 $info_source = "Prodding config.nmake";
 250                 my $filepath = "$srcdir/config.nmake";
 251                 open(CFGNMAKE, "< $filepath") || die "Can't read $filepath!";
 252                 while ($line = <CFGNMAKE>) {
 253                         if ($line =~ /^GIT_REVISION=(\d+)/) {
 254                                 $num_commits = $1;
 255                                 $do_hack = 0;
 256                                 last;
 257                         }
 258                 }
 259                 close (CFGNMAKE);
 260         }
 261         if ($num_commits == 0 and -d "$srcdir/.git") {
 262
 263                 # Try git...
 264                 eval {
 265                         use warnings "all";
 266                         no warnings "all";
 267                         # If someone had properly tagged 1.9.0 we could also use
 268                         # "git describe --abbrev=1 --tags HEAD"
 269
 270                         $info_cmd = "(cd $srcdir; git log --format='%b' -n 1)";
 271                         $line = qx{$info_cmd};
 272                         if (defined($line)) {
 273                                 if ($line =~ /svn path=.*; revision=(\d+)/) {
 274                                         $num_commits = $1;
 275                                 }
 276                         }
 277                         $info_cmd = "(cd $srcdir; git log --format='%ad' -n 1 --date=iso)";
 278                         $line = qx{$info_cmd};
 279                         if (defined($line)) {
 280                                 if ($line =~ /(\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/) {
 281                                         $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
 282                                 }
 283                         }
 284                         $info_cmd = "(cd $srcdir; git branch)";
 285                         $line = qx{$info_cmd};
 286                         if (defined($line)) {
 287                                 if ($line =~ /\* (\S+)/) {
 288                                         $repo_branch = $1;
 289                                 }
 290                         }
 291                         1;
 292                         };
 293         }
 294         if ($num_commits == 0 and -d "$srcdir/.bzr") {
 295
 296                 # Try bzr...
 297                 eval {
 298                         use warnings "all";
 299                         no warnings "all";
 300                         $info_cmd = "(cd $srcdir; bzr log -l 1)";
 301                         $line = qx{$info_cmd};
 302                         if (defined($line)) {
 303                                 if ($line =~ /timestamp: \S+ (\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/) {
 304                                         $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
 305                                 }
 306                                 if ($line =~ /svn revno: (\d+) \(on (\S+)\)/) {
 307                                         $num_commits = $1;
 308                                         $repo_branch = $2;
 309                                 }
 310                         }
 311                         1;
 312                         };
 313         }
 314
 315
 316         # 'svn info' failed or the user really wants us to dig around in .svn/entries
 317         if ($do_hack) {
 318                 # Start of ugly internal SVN file hack
 319                 if (! open (ENTRIES, "< $srcdir/.svn/entries")) {
 320                         print ("Unable to open $srcdir/.svn/entries\n");
 321                 } else {
 322                         $info_source = "Prodding .svn";
 323                         # We need to find out whether our parser can handle the entries file
 324                         $line = <ENTRIES>;
 325                         chomp $line;
 326                         if ($line eq '<?xml version="1.0" encoding="utf-8"?>') {
 327                                 $repo_version = "pre1.4";
 328                         } elsif ($line =~ /^8$/) {
 329                                 $repo_version = "1.4";
 330                         } else {
 331                                 $repo_version = "unknown";
 332                         }
 333
 334                         if ($repo_version eq "pre1.4") {
 335                                 # The entries schema is flat, so we can use regexes to parse its contents.
 336                                 while ($line = <ENTRIES>) {
 337                                         if ($line =~ /<entry$/ || $line =~ /<entry\s/) {
 338                                                 $in_entries = 1;
 339                                                 $svn_name = "";
 340                                         }
 341                                         if ($in_entries) {
 342                                                 if ($line =~ /name="(.*)"/) { $svn_name = $1; }
 343                                                 if ($line =~ /committed-date="(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)/) {
 344                                                         $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
 345                                                 }
 346                                                 if ($line =~ /revision="(\d+)"/) { $num_commits = $1; }
 347                                         }
 348                                         if ($line =~ /\/>/) {
 349                                                 if (($svn_name eq "" || $svn_name eq "svn:this_dir") &&
 350                                                                 $last_change && $num_commits) {
 351                                                         $in_entries = 0;
 352                                                         last;
 353                                                 }
 354                                         }
 355                                         # XXX - Fetch the repository root & URL
 356                                 }
 357                         }
 358                         close ENTRIES;
 359                 }
 360         }
 361
 362         # If we picked up the revision and modification time,
 363         # generate our strings.
 364         if ($num_commits && $last_change) {
 365                 $version_format =~ s/%#/$num_commits/;
 366                 $package_format =~ s/%#/$num_commits-$commit_id/;
 367                 $package_string = strftime($package_format, gmtime($last_change));
 368         }
 369
 370         if ($repo_url && $repo_root && index($repo_url, $repo_root) == 0) {
 371                 $repo_branch = substr($repo_url, length($repo_root));
 372         }
 373
 374         if ($get_svn) {
 375                 print <<"Fin";
 376 Commit distance : $num_commits
 377 Commit ID       : $commit_id
 378 Revision source : $info_source
 379 Release stamp   : $package_string
 380 Fin
 381         }
 382 }
 383
 384
 385 # Read configure.ac, then write it back out with an updated
 386 # "AC_INIT" line.
 387 sub update_configure_ac
 388 {
 389         my $line;
 390         my $contents = "";
 391         my $version = "";
 392         my $filepath = "$srcdir/configure.ac";
 393
 394         return if (!$set_version && $package_string eq "");
 395
 396         open(CFGIN, "< $filepath") || die "Can't read $filepath!";
 397         while ($line = <CFGIN>) {
 398                 if ($line =~ /^m4_define\( *\[?version_major\]? *,.*([\r\n]+)$/) {
 399                         $line = sprintf("m4_define([version_major], [%d])$1", $version_pref{"version_major"});
 400                 } elsif ($line =~ /^m4_define\( *\[?version_minor\]? *,.*([\r\n]+)$/) {
 401                         $line = sprintf("m4_define([version_minor], [%d])$1", $version_pref{"version_minor"});
 402                 } elsif ($line =~ /^m4_define\( *\[?version_micro\]? *,.*([\r\n]+)$/) {
 403                         $line = sprintf("m4_define([version_micro], [%d])$1", $version_pref{"version_micro"});
 404                 } elsif ($line =~ /^m4_append\( *\[?version_micro_extra\]? *,.*([\r\n]+)$/) {
 405                         $line = sprintf("m4_append([version_micro_extra], [%s])$1", $package_string);
 406                 }
 407                 $contents .= $line
 408         }
 409
 410         open(CFGIN, "> $filepath") || die "Can't write $filepath!";
 411         print(CFGIN $contents);
 412         close(CFGIN);
 413         print "$filepath has been updated.\n";
 414 }
 415
 416 # Read config.nmake, then write it back out with an updated
 417 # "VERSION" line.
 418 sub update_config_nmake
 419 {
 420         my $line;
 421         my $contents = "";
 422         my $version = "";
 423         my $filepath = "$srcdir/config.nmake";
 424
 425         open(CFGNMAKE, "< $filepath") || die "Can't read $filepath!";
 426         while ($line = <CFGNMAKE>) {
 427                 if ($line =~ /^GIT_REVISION=.*([\r\n]+)$/) {
 428                         $line = sprintf("GIT_REVISION=%d$1", $num_commits);
 429                 } elsif ($set_version && $line =~ /^VERSION_MAJOR=.*([\r\n]+)$/) {
 430                         $line = sprintf("VERSION_MAJOR=%d$1", $version_pref{"version_major"});
 431                 } elsif ($set_version && $line =~ /^VERSION_MINOR=.*([\r\n]+)$/) {
 432                         $line = sprintf("VERSION_MINOR=%d$1", $version_pref{"version_minor"});
 433                 } elsif ($set_version && $line =~ /^VERSION_MICRO=.*([\r\n]+)$/) {
 434                         $line = sprintf("VERSION_MICRO=%d$1", $version_pref{"version_micro"});
 435                 } elsif ($line =~ /^VERSION_EXTRA=.*([\r\n]+)$/) {
 436                         $line = "VERSION_EXTRA=$package_string$1";
 437                 }
 438                 $contents .= $line
 439         }
 440
 441         open(CFGNMAKE, "> $filepath") || die "Can't write $filepath!";
 442         print(CFGNMAKE $contents);
 443         close(CFGNMAKE);
 444         print "$filepath has been updated.\n";
 445 }
 446
 447 # Read docbook/asciidoc.conf, then write it back out with an updated
 448 # wireshark-version replacement line.
 449 sub update_release_notes
 450 {
 451         my $line;
 452         my $contents = "";
 453         my $version = "";
 454         my $filepath = "$srcdir/docbook/asciidoc.conf";
 455
 456         return if (!$set_version);
 457
 458         open(ADOC_CONF, "< $filepath") || die "Can't read $filepath!";
 459         while ($line = <ADOC_CONF>) {
 460                 # wireshark-version:\[\]=1.9.1
 461
 462                 if ($line =~ /^wireshark-version:\\\[\\\]=.*([\r\n]+)$/) {
 463                         $line = sprintf("wireshark-version:\\\[\\\]=%d.%d.%d$1",
 464                                         $version_pref{"version_major"},
 465                                         $version_pref{"version_minor"},
 466                                         $version_pref{"version_micro"},
 467                                        );
 468                 }
 469                 $contents .= $line
 470         }
 471
 472         open(ADOC_CONF, "> $filepath") || die "Can't write $filepath!";
 473         print(ADOC_CONF $contents);
 474         close(ADOC_CONF);
 475         print "$filepath has been updated.\n";
 476 }
 477
 478 # Read debian/changelog, then write back out an updated version.
 479 sub update_debian_changelog
 480 {
 481         my $line;
 482         my $contents = "";
 483         my $version = "";
 484         my $filepath = "$srcdir/debian/changelog";
 485
 486         return if ($set_version == 0);
 487
 488         open(CHANGELOG, "< $filepath") || die "Can't read $filepath!";
 489         while ($line = <CHANGELOG>) {
 490                 if ($set_version && CHANGELOG->input_line_number() == 1) {
 491                         $line = sprintf("wireshark (%d.%d.%d) unstable; urgency=low\n",
 492                                         $version_pref{"version_major"},
 493                                         $version_pref{"version_minor"},
 494                                         $version_pref{"version_micro"},
 495                                        );
 496                 }
 497                 $contents .= $line
 498         }
 499
 500         open(CHANGELOG, "> $filepath") || die "Can't write $filepath!";
 501         print(CHANGELOG $contents);
 502         close(CHANGELOG);
 503         print "$filepath has been updated.\n";
 504 }
 505
 506 # Read debian/wireshark-common.files, then write back out an updated version.
 507 # The libraries updated here MUST match the updates made by update_lib_releases
 508 # below. We should do this automatically.
 509 sub update_debian_wcf
 510 {
 511         my $line;
 512         my $contents = "";
 513         my $version = "";
 514         my $filepath = "$srcdir/debian/wireshark-common.files";
 515
 516         return if (!$set_version);
 517
 518         open(DWCF, "< $filepath") || die "Can't read $filepath!";
 519         while ($line = <DWCF>) {
 520                 # /usr/lib/wireshark/libwireshark.so.1.1.0
 521
 522                 if ($line =~ qr{^(/usr/lib/wireshark/lib(wireshark|wiretap|filetap).so\.\d+\.\d+\.)\d+$}) {
 523                         $line = sprintf("$1%d\n", $version_pref{"version_micro"});
 524                 }
 525                 $contents .= $line
 526         }
 527
 528         open(DWCF, "> $filepath") || die "Can't write $filepath!";
 529         print(DWCF $contents);
 530         close(DWCF);
 531         print "$filepath has been updated.\n";
 532 }
 533
 534 # Read Makefile.am for each library, then write back out an updated version.
 535 sub update_lib_releases
 536 {
 537         my $line;
 538         my $contents = "";
 539         my $version = "";
 540         my $filedir;
 541         my $filepath;
 542
 543         return if (!$set_version);
 544
 545         # The Libtool manual says
 546         #   "If the library source code has changed at all since the last
 547         #    update, then increment revision (‘c:r:a’ becomes ‘c:r+1:a’)."
 548         # epan changes with each minor release, almost by definition. wiretap
 549         # and filetap changes with *most* releases.
 550         #
 551         # http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
 552         for $filedir ("epan", "wiretap", "filetap") {   # "wsutil"
 553                 $contents = "";
 554                 $filepath = $filedir . "/Makefile.am";
 555                 open(MAKEFILE_AM, "< $filepath") || die "Can't read $filepath!";
 556                 while ($line = <MAKEFILE_AM>) {
 557                         # libwireshark_la_LDFLAGS = -version-info 2:1:1 -export-symbols
 558
 559                         if ($line =~ /^(lib\w+_la_LDFLAGS.*version-info\s+\d+:)\d+(:\d+.*)/) {
 560                                 $line = sprintf("$1%d$2\n", $version_pref{"version_micro"});
 561                         }
 562                         $contents .= $line
 563                 }
 564
 565                 open(MAKEFILE_AM, "> $filepath") || die "Can't write $filepath!";
 566                 print(MAKEFILE_AM $contents);
 567                 close(MAKEFILE_AM);
 568                 print "$filepath has been updated.\n";
 569         }
 570 }
 571
 572 # Update distributed files that contain any version information
 573 sub update_versioned_files
 574 {
 575         &update_configure_ac;
 576         &update_config_nmake;
 577         &update_release_notes;
 578         &update_debian_changelog;
 579         &update_debian_wcf;
 580         &update_lib_releases;
 581 }
 582
 583 # Print the SVN version to $version_file.
 584 # Don't change the file if it is not needed.
 585 sub print_GIT_REVISION
 586 {
 587         my $GIT_REVISION;
 588         my $needs_update = 1;
 589
 590         if ($git_description) {
 591                 $GIT_REVISION = "#define GITVERSION \"" .
 592                         $git_description . "\"\n" .
 593                         "#define GITBRANCH \"" . $repo_branch . "\"\n";
 594         } elsif ($last_change && $num_commits) {
 595                 $GIT_REVISION = "#define GITVERSION \"Git Rev " .
 596                         $num_commits . "\"\n" .
 597                         "#define GITBRANCH \"" . $repo_branch . "\"\n";
 598         } else {
 599                 $GIT_REVISION = "#define GITVERSION \"Git Rev Unknown\"\n" .
 600                         "#define GITBRANCH \"unknown\"\n";
 601         }
 602         if (open(OLDREV, "<$version_file")) {
 603                 my $old_GIT_REVISION = <OLDREV> . <OLDREV>;
 604                 if ($old_GIT_REVISION eq $GIT_REVISION) {
 605                         $needs_update = 0;
 606                 }
 607                 close OLDREV;
 608         }
 609
 610         if (! $set_svn) { return; }
 611
 612         if ($needs_update) {
 613                 # print "Updating $version_file so it contains:\n$GIT_REVISION";
 614                 open(VER, ">$version_file") || die ("Cannot write to $version_file ($!)\n");
 615                 print VER "$GIT_REVISION";
 616                 close VER;
 617                 print "$version_file has been updated.\n";
 618         } else {
 619                 print "$version_file unchanged.\n";
 620         }
 621 }
 622
 623 # Read values from the configuration file, if it exists.
 624 sub get_config {
 625         my $arg;
 626         my $show_help = 0;
 627
 628         # Get our command-line args
 629         # XXX - Do we need an option to undo --set-release?
 630         GetOptions(
 631                    "help|h", \$show_help,
 632                    "get-svn|g", \$get_svn,
 633                    "set-svn|s", \$set_svn,
 634                    "set-version|v", \$set_version,
 635                    "set-release|r|package-version|p", \$set_release
 636                    ) || pod2usage(2);
 637
 638         if ($show_help) { pod2usage(1); }
 639
 640         if ( !( $show_help || $get_svn || $set_svn || $set_version || $set_release ) ) {
 641                 $set_svn = 1;
 642         }
 643
 644         if ($#ARGV >= 0) {
 645                 $srcdir = $ARGV[0]
 646         }
 647
 648         if (! open(FILE, "<$vconf_file")) {
 649                 print STDERR "Version configuration file $vconf_file not "
 650                 . "found.  Using defaults.\n";
 651                 return 1;
 652         }
 653
 654         while (<FILE>) {
 655                 chomp;
 656                 next if (/^#/);
 657                 next unless (/^(\w+)(:|=)\s*(\S.*)/);
 658                 $version_pref{$1} = $3;
 659         }
 660         close FILE;
 661         return 1;
 662 }
 663
 664 ##
 665 ## Start of code
 666 ##
 667
 668 &get_config();
 669
 670 &read_repo_info();
 671
 672 &print_GIT_REVISION;
 673
 674 if ($set_version || $set_release) {
 675         if ($set_version) {
 676                 print "Generating version information\n";
 677         }
 678
 679         if ($version_pref{"enable"} == 0) {
 680                 print "Release information disabled in $vconf_file.\n";
 681                 $set_release = 0;
 682         }
 683
 684         if ($set_release) {
 685                 print "Generating release information\n";
 686         } else {
 687                 print "Resetting release information\n";
 688                 $num_commits = 0;
 689                 $package_string = "";
 690         }
 691
 692         &update_versioned_files;
 693 }
 694
 695 __END__
 696
 697 =head1 NAM
 698
 699 make-version.pl - Get and set build-time version information for Wireshark
 700
 701 =head1 SYNOPSIS
 702
 703 make-version.pl [options] [source directory]
 704
 705   Options:
 706
 707     --help, -h                 This help message
 708     --get-svn, -g              Print the SVN revision and source.
 709     --set-svn, -s              Set the information in version.h
 710     --set-version, -v          Set the major, minor, and micro versions in
 711                                configure.ac, config.nmake, debian/changelog,
 712                                and docbook/asciidoc.conf.
 713                                Resets the release information when used by
 714                                itself.
 715     --set-release, -r          Set the release information in configure.ac
 716                                and config.nmake
 717     --package-version, -p      Deprecated. Same as --set-release.
 718
 719 Options can be used in any combination. If none are specified B<--set-svn>
 720 is assumed.
 721
 722 #
 723 # Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 724 #
 725 # Local variables:
 726 # c-basic-offset: 8
 727 # tab-width: 8
 728 # indent-tabs-mode: t
 729 # End:
 730 #
 731 # vi: set shiftwidth=8 tabstop=8 noexpandtab:
 732 # :indentSize=8:tabSize=8:noTabs=false:
 733 #
 734 #