No need for a routine to return a GSList of extensions for compressed files.
[metze/wireshark/wip.git] / make-version.pl
index 9c0cd25769c7477bdb53a5a17bb026b908b3eb5e..a3643ddef8e6f6d377e8a6f1a803b3fdf87431af 100755 (executable)
@@ -2,8 +2,6 @@
 #
 # Copyright 2004 Jörg Mayer (see AUTHORS file)
 #
-# $Id$
-#
 # Wireshark - Network traffic analyzer
 # By Gerald Combs <gerald@wireshark.org>
 # Copyright 1998 Gerald Combs
 # If "version.conf" is present, it is parsed for configuration values.
 # Possible values are:
 #
-#   enable     - Enable or disable versioning.  Zero (0) disables, nonzero
-#               enables.
-#   svn_client - Use svn client i.s.o. ugly internal SVN file hack
-#   format     - A strftime() formatted string to use as a template for
-#               the version string. The sequence "%#" will substitute
-#               the SVN revision number.
-#   pkg_enable - Enable or disable local package versioning.
-#   pkg_format - Like "format", but used for the local package version.
+#   enable       - Enable or disable versioning.  Zero (0) disables, nonzero
+#                 enables.
+#   svn_client   - Use svn client i.s.o. ugly internal SVN file hack
+#   tortoise_svn - Use TortoiseSVN client instead of ugly internal SVN
+#                 file hack
+#   format       - A strftime() formatted string to use as a template for
+#                 the version string. The sequence "%#" will substitute
+#                 the number of commits for Git or the revision number
+#                 for SVN.
+#   pkg_enable   - Enable or disable local package versioning.
+#   pkg_format   - Like "format", but used for the local package version.
 #
 # If run with the "-r" or "--set-release" argument the AC_INIT macro in
 # configure.ac and the VERSION macro in config.nmake will have the
-# pkg_format template appended to the version number. svnversion.h will
+# pkg_format template appended to the version number. version.h will
 # _not_ be generated if either argument is present.
 #
 # Default configuration:
 #
 # enable: 1
-# svn_client: 1
-# format: SVN %Y%m%d%H%M%S
+# git_client: 0
+# svn_client: 0
+# tortoise_svn: 0
+# format: git %Y%m%d%H%M%S
 # pkg_enable: 1
-# pkg_format: -SVN-%#
+# pkg_format: -%#
 
 # XXX - We're pretty dumb about the "%#" substitution, and about having
 # spaces in the package format.
@@ -62,34 +65,37 @@ use Pod::Usage;
 use IO::Handle;
 use English;
 
-my $version_file = 'svnversion.h';
+my $version_file = 'version.h';
 my $package_string = "";
 my $vconf_file = 'version.conf';
+my $vcs_name = "Git";
 my $tortoise_file = "tortoise_template";
 my $last_change = 0;
-my $revision = 0;
-my $repo_path = "unknown";
+my $num_commits = 0;
+my $commit_id = '';
+my $repo_branch = "unknown";
+my $git_executable = "git";
 my $git_description = undef;
-my $get_svn = 0;
-my $set_svn = 0;
+my $get_vcs = 0;
+my $set_vcs = 0;
+my $print_vcs = 0;
 my $set_version = 0;
 my $set_release = 0;
 my %version_pref = (
-       "version_major" => 1,
-       "version_minor" => 11,
-       "version_micro" => 3,
+       "version_major" => 2,
+       "version_minor" => 1,
+       "version_micro" => 0,
        "version_build" => 0,
 
        "enable"        => 1,
-       "git_client"    => 0,
-       "svn_client"    => 1,
+       "git_client"    => 0,   # set if .git found and .git/svn not found
+       "svn_client"    => 0,   # set if .svn found
        "tortoise_svn"  => 0,
-       "format"        => "SVN %Y%m%d%H%M%S",
-       "is_release"    => 0,
+       "format"        => "git %Y%m%d%H%M%S",
 
        # Normal development builds
        "pkg_enable" => 1,
-       "pkg_format" => "-SVN-%#",
+       "pkg_format" => "-%#",
 
        # Development releases
        #"pkg_enable" => 0,
@@ -103,8 +109,7 @@ $ENV{LANG} = "C";
 $ENV{LC_ALL} = "C";
 $ENV{GIT_PAGER} = "";
 
-# Run "svn info".  Parse out the most recent modification time and the
-# revision number.
+# Attempt to get revision information from the repository.
 sub read_repo_info {
        my $line;
        my $version_format = $version_pref{"format"};
@@ -112,12 +117,16 @@ sub read_repo_info {
        my $in_entries = 0;
        my $svn_name;
        my $repo_version;
-       my $repo_root = undef;
-       my $repo_url = undef;
        my $do_hack = 1;
        my $info_source = "Unknown";
 
-       if ($version_pref{"pkg_enable"}) {
+       # Make sure git is available.
+       if (!`$git_executable --version`) {
+               print STDERR "Git unavailable. Git revision will be missing from version string.\n";
+               return;
+       }
+
+       if ($version_pref{"pkg_enable"} > 0) {
                $package_format = $version_pref{"pkg_format"};
        }
 
@@ -127,9 +136,10 @@ sub read_repo_info {
        } elsif (-d "$srcdir/.svn" or -d "$srcdir/../.svn") {
                $info_source = "Command line (svn info)";
                $info_cmd = "svn info $srcdir";
+               $version_pref{"svn_client"} = 1;
        } elsif (-d "$srcdir/.git/svn") {
                $info_source = "Command line (git-svn)";
-               $info_cmd = "(cd $srcdir; git svn info)";
+               $info_cmd = "(cd $srcdir; $git_executable svn info)";
        }
 
        #Git can give us:
@@ -141,7 +151,7 @@ sub read_repo_info {
        # 1ddc838
        #
        # The upstream branch path: git rev-parse --abbrev-ref --symbolic-full-name @{upstream}
-       # origin/master-1.8
+       # origin/master
        #
        # A version description: git describe --tags --dirty
        # wireshark-1.8.12-15-g1ddc838
@@ -160,47 +170,36 @@ sub read_repo_info {
                        use warnings "all";
                        no warnings "all";
 
-                       chomp($line = qx{git log -1 --pretty=format:%at});
-                       if (defined($line)) {
+                       chomp($line = qx{$git_executable --git-dir="$srcdir"/.git log -1 --pretty=format:%at});
+                       if ($? == 0 && length($line) > 1) {
                                $last_change = $line;
                        }
 
-                       # Commits in current (master-1.8) branch. We may want to use
-                       # a different number.
-                       chomp($line = qx{git rev-list --count ea19c7f952ce9fc53fe4c223f1d9d6797346258b..HEAD});
-                       if (defined($line)) {
-                               $revision = $line;
-                       }
-
-                       chomp($line = qx{git ls-remote --get-url origin});
-                       if (defined($line)) {
-                               $repo_url = $line;
-                       }
-
-                       # Probably not quite what we're looking for
-                       chomp($line = qx{git rev-parse --abbrev-ref --symbolic-full-name \@\{upstream\}});
-                       if (defined($line)) {
-                               $repo_path = basename($line);
+                       # Commits since last annotated tag.
+                       chomp($line = qx{$git_executable --git-dir="$srcdir"/.git describe --long --always --match "v*"});
+                       if ($? == 0 && length($line) > 1) {
+                               my @parts = split(/-/, $line);
+                               $git_description = $line;
+                               $num_commits = $parts[-2];
+                               $commit_id = $parts[-1];
                        }
 
-
-                       # XXX After the SVN->git migration we'll create tags for 1.11.x.
-                       # Until then we'll fake it.
-                       #chomp($line = qx{git describe --tags --dirty});
-                       chomp($line = qx{git rev-parse --short HEAD});
-                       if (defined($line)) {
-                               #$git_description = $line;
-                               $git_description = "wireshark-1.11." . $version_pref{"version_minor"} .
-                                       "-$revision-g$line";
+                       # This will break in some cases. Hopefully not during
+                       # official package builds.
+                       chomp($line = qx{$git_executable --git-dir="$srcdir"/.git rev-parse --abbrev-ref --symbolic-full-name \@\{upstream\}});
+                       if ($? == 0 && length($line) > 1) {
+                               $repo_branch = basename($line);
                        }
 
                        1;
                };
 
-               if ($last_change && $revision && $repo_url && $repo_path) {
+               if ($last_change && $num_commits && $repo_branch) {
                        $do_hack = 0;
                }
        } elsif ($version_pref{"svn_client"}) {
+               my $repo_root = undef;
+               my $repo_url = undef;
                eval {
                        use warnings "all";
                        no warnings "all";
@@ -210,7 +209,7 @@ sub read_repo_info {
                                        $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
                                }
                                if ($line =~ /Last Changed Rev: (\d+)/) {
-                                       $revision = $1;
+                                       $num_commits = $1;
                                }
                                if ($line =~ /URL: (\S+)/) {
                                        $repo_url = $1;
@@ -218,18 +217,23 @@ sub read_repo_info {
                                if ($line =~ /Repository Root: (\S+)/) {
                                        $repo_root = $1;
                                }
+                               $vcs_name = "SVN";
                        }
                        1;
                };
 
-               if ($last_change && $revision && $repo_url && $repo_root) {
+               if ($repo_url && $repo_root && index($repo_url, $repo_root) == 0) {
+                       $repo_branch = substr($repo_url, length($repo_root));
+               }
+
+               if ($last_change && $num_commits && $repo_url && $repo_root) {
                        $do_hack = 0;
                }
        } elsif ($version_pref{"tortoise_svn"}) {
                # Dynamically generic template file needed by TortoiseSVN
                open(TORTOISE, ">$tortoise_file");
-               print TORTOISE "#define SVNVERSION \"\$WCREV\$\"\r\n";
-               print TORTOISE "#define SVNPATH \"\$WCURL\$\"\r\n";
+               print TORTOISE "#define VCSVERSION \"\$WCREV\$\"\r\n";
+               print TORTOISE "#define VCSBRANCH \"\$WCURL\$\"\r\n";
                close(TORTOISE);
 
                $info_source = "Command line (SubWCRev)";
@@ -238,26 +242,27 @@ sub read_repo_info {
                if ($tortoise == 0) {
                        $do_hack = 0;
                }
+               $vcs_name = "SVN";
 
                #clean up the template file
                unlink($tortoise_file);
        }
 
-       if ($revision == 0) {
+       if ($num_commits == 0) {
                # Fall back to config.nmake
                $info_source = "Prodding config.nmake";
                my $filepath = "$srcdir/config.nmake";
                open(CFGNMAKE, "< $filepath") || die "Can't read $filepath!";
                while ($line = <CFGNMAKE>) {
-                       if ($line =~ /^SVN_REVISION=(\d+)/) {
-                               $revision = $1;
+                       if ($line =~ /^VCS_REVISION=(\d+)/) {
+                               $num_commits = $1;
                                $do_hack = 0;
                                last;
                        }
                }
                close (CFGNMAKE);
        }
-       if ($revision == 0 and -d "$srcdir/.git") {
+       if ($num_commits == 0 and -d "$srcdir/.git") {
 
                # Try git...
                eval {
@@ -265,32 +270,32 @@ sub read_repo_info {
                        no warnings "all";
                        # If someone had properly tagged 1.9.0 we could also use
                        # "git describe --abbrev=1 --tags HEAD"
-                       
-                       $info_cmd = "(cd $srcdir; git log --format='%b' -n 1)";
+
+                       $info_cmd = "(cd $srcdir; $git_executable log --format='%b' -n 1)";
                        $line = qx{$info_cmd};
                        if (defined($line)) {
                                if ($line =~ /svn path=.*; revision=(\d+)/) {
-                                       $revision = $1;
+                                       $num_commits = $1;
                                }
                        }
-                       $info_cmd = "(cd $srcdir; git log --format='%ad' -n 1 --date=iso)";
+                       $info_cmd = "(cd $srcdir; $git_executable log --format='%ad' -n 1 --date=iso)";
                        $line = qx{$info_cmd};
                        if (defined($line)) {
                                if ($line =~ /(\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/) {
                                        $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
                                }
                        }
-                       $info_cmd = "(cd $srcdir; git branch)";
+                       $info_cmd = "(cd $srcdir; $git_executable branch)";
                        $line = qx{$info_cmd};
                        if (defined($line)) {
                                if ($line =~ /\* (\S+)/) {
-                                       $repo_path = $1;
+                                       $repo_branch = $1;
                                }
                        }
                        1;
                        };
        }
-       if ($revision == 0 and -d "$srcdir/.bzr") {
+       if ($num_commits == 0 and -d "$srcdir/.bzr") {
 
                # Try bzr...
                eval {
@@ -303,9 +308,10 @@ sub read_repo_info {
                                        $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
                                }
                                if ($line =~ /svn revno: (\d+) \(on (\S+)\)/) {
-                                       $revision = $1;
-                                       $repo_path = $2;
+                                       $num_commits = $1;
+                                       $repo_branch = $2;
                                }
+                               $vcs_name = "Bzr";
                        }
                        1;
                        };
@@ -316,7 +322,7 @@ sub read_repo_info {
        if ($do_hack) {
                # Start of ugly internal SVN file hack
                if (! open (ENTRIES, "< $srcdir/.svn/entries")) {
-                       print ("Unable to open $srcdir/.svn/entries\n");
+                       print STDERR "Unable to open $srcdir/.svn/entries\n";
                } else {
                        $info_source = "Prodding .svn";
                        # We need to find out whether our parser can handle the entries file
@@ -342,11 +348,11 @@ sub read_repo_info {
                                                if ($line =~ /committed-date="(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)/) {
                                                        $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
                                                }
-                                               if ($line =~ /revision="(\d+)"/) { $revision = $1; }
+                                               if ($line =~ /revision="(\d+)"/) { $num_commits = $1; }
                                        }
                                        if ($line =~ /\/>/) {
                                                if (($svn_name eq "" || $svn_name eq "svn:this_dir") &&
-                                                               $last_change && $revision) {
+                                                               $last_change && $num_commits) {
                                                        $in_entries = 0;
                                                        last;
                                                }
@@ -360,26 +366,66 @@ sub read_repo_info {
 
        # If we picked up the revision and modification time,
        # generate our strings.
-       if ($revision && $last_change) {
-               $version_format =~ s/%#/$revision/;
-               $package_format =~ s/%#/$revision/;
+       if ($version_pref{"pkg_enable"}) {
+               $version_format =~ s/%#/$num_commits/;
+               $package_format =~ s/%#/$num_commits-$commit_id/;
                $package_string = strftime($package_format, gmtime($last_change));
        }
 
-       if ($repo_url && $repo_root && index($repo_url, $repo_root) == 0) {
-               $repo_path = substr($repo_url, length($repo_root));
-       }
-
-       if ($get_svn) {
+       if ($get_vcs) {
                print <<"Fin";
-SVN revision    : $revision
+Commit distance : $num_commits
+Commit ID       : $commit_id
 Revision source : $info_source
 Release stamp   : $package_string
 Fin
+       } elsif ($print_vcs) {
+               print new_version_h();
        }
 }
 
 
+# Read CMakeLists.txt, then write it back out with updated "set(PROJECT_..._VERSION ...)
+# lines
+# set(GIT_REVISION 999)
+# set(PROJECT_MAJOR_VERSION 1)
+# set(PROJECT_MINOR_VERSION 99)
+# set(PROJECT_PATCH_VERSION 0)
+# set(PROJECT_VERSION_EXTENSION "-rc5")
+sub update_cmakelists_txt
+{
+       my $line;
+       my $contents = "";
+       my $version = "";
+       my $filepath = "$srcdir/CMakeLists.txt";
+       my $cmake_package_string = "\$ENV{WIRESHARK_VERSION_EXTRA}";
+
+       if ($package_string ne "") { $cmake_package_string = $package_string; }
+
+       return if (!$set_version && $package_string eq "");
+
+       open(CFGIN, "< $filepath") || die "Can't read $filepath!";
+       while ($line = <CFGIN>) {
+               if ($line =~ /^set *\( *GIT_REVISION .*([\r\n]+)$/) {
+                       $line = sprintf("set(GIT_REVISION %d)$1", $num_commits);
+               } elsif ($line =~ /^set *\( *PROJECT_MAJOR_VERSION .*([\r\n]+)$/) {
+                       $line = sprintf("set(PROJECT_MAJOR_VERSION %d)$1", $version_pref{"version_major"});
+               } elsif ($line =~ /^set *\( *PROJECT_MINOR_VERSION .*([\r\n]+)$/) {
+                       $line = sprintf("set(PROJECT_MINOR_VERSION %d)$1", $version_pref{"version_minor"});
+               } elsif ($line =~ /^set *\( *PROJECT_PATCH_VERSION .*([\r\n]+)$/) {
+                       $line = sprintf("set(PROJECT_PATCH_VERSION %d)$1", $version_pref{"version_micro"});
+               } elsif ($line =~ /^set *\( *PROJECT_VERSION_EXTENSION.*([\r\n]+)$/) {
+                       $line = sprintf("set(PROJECT_VERSION_EXTENSION \"%s\")$1", $cmake_package_string);
+               }
+               $contents .= $line
+       }
+
+       open(CFGIN, "> $filepath") || die "Can't write $filepath!";
+       print(CFGIN $contents);
+       close(CFGIN);
+       print "$filepath has been updated.\n";
+}
+
 # Read configure.ac, then write it back out with an updated
 # "AC_INIT" line.
 sub update_configure_ac
@@ -419,11 +465,15 @@ sub update_config_nmake
        my $contents = "";
        my $version = "";
        my $filepath = "$srcdir/config.nmake";
+       my $win_package_string = "\$(WIRESHARK_VERSION_EXTRA)";
+
+       if ($package_string ne "") { $win_package_string = $package_string; }
+
 
        open(CFGNMAKE, "< $filepath") || die "Can't read $filepath!";
        while ($line = <CFGNMAKE>) {
-               if ($line =~ /^SVN_REVISION=.*([\r\n]+)$/) {
-                       $line = sprintf("SVN_REVISION=%d$1", $revision);
+               if ($line =~ /^VCS_REVISION=.*([\r\n]+)$/) {
+                       $line = sprintf("VCS_REVISION=%d$1", $num_commits);
                } elsif ($set_version && $line =~ /^VERSION_MAJOR=.*([\r\n]+)$/) {
                        $line = sprintf("VERSION_MAJOR=%d$1", $version_pref{"version_major"});
                } elsif ($set_version && $line =~ /^VERSION_MINOR=.*([\r\n]+)$/) {
@@ -431,7 +481,7 @@ sub update_config_nmake
                } elsif ($set_version && $line =~ /^VERSION_MICRO=.*([\r\n]+)$/) {
                        $line = sprintf("VERSION_MICRO=%d$1", $version_pref{"version_micro"});
                } elsif ($line =~ /^VERSION_EXTRA=.*([\r\n]+)$/) {
-                       $line = "VERSION_EXTRA=$package_string$1";
+                       $line = "VERSION_EXTRA=$win_package_string$1";
                }
                $contents .= $line
        }
@@ -501,36 +551,8 @@ sub update_debian_changelog
        print "$filepath has been updated.\n";
 }
 
-# Read debian/wireshark-common.files, then write back out an updated version.
-# The libraries updated here MUST match the updates made by update_lib_releases
-# below. We should do this automatically.
-sub update_debian_wcf
-{
-       my $line;
-       my $contents = "";
-       my $version = "";
-       my $filepath = "$srcdir/debian/wireshark-common.files";
-
-       return if (!$set_version);
-
-       open(DWCF, "< $filepath") || die "Can't read $filepath!";
-       while ($line = <DWCF>) {
-               # /usr/lib/wireshark/libwireshark.so.1.1.0
-
-               if ($line =~ qr{^(/usr/lib/wireshark/lib(wireshark|wiretap|filetap).so\.\d+\.\d+\.)\d+$}) {
-                       $line = sprintf("$1%d\n", $version_pref{"version_micro"});
-               }
-               $contents .= $line
-       }
-
-       open(DWCF, "> $filepath") || die "Can't write $filepath!";
-       print(DWCF $contents);
-       close(DWCF);
-       print "$filepath has been updated.\n";
-}
-
 # Read Makefile.am for each library, then write back out an updated version.
-sub update_lib_releases
+sub update_automake_lib_releases
 {
        my $line;
        my $contents = "";
@@ -544,10 +566,10 @@ sub update_lib_releases
        #   "If the library source code has changed at all since the last
        #    update, then increment revision (‘c:r:a’ becomes ‘c:r+1:a’)."
        # epan changes with each minor release, almost by definition. wiretap
-       # and filetap changes with *most* releases.
+       # changes with *most* releases.
        #
        # http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
-       for $filedir ("epan", "wiretap", "filetap") {   # "wsutil"
+       for $filedir ("epan", "wiretap") {      # "wsutil"
                $contents = "";
                $filepath = $filedir . "/Makefile.am";
                open(MAKEFILE_AM, "< $filepath") || die "Can't read $filepath!";
@@ -567,50 +589,90 @@ sub update_lib_releases
        }
 }
 
+# Read CMakeLists.txt for each library, then write back out an updated version.
+sub update_cmake_lib_releases
+{
+       my $line;
+       my $contents = "";
+       my $version = "";
+       my $filedir;
+       my $filepath;
+
+       return if (!$set_version);
+
+       for $filedir ("epan", "wiretap") {      # "wsutil"
+               $contents = "";
+               $filepath = $filedir . "/CMakeLists.txt";
+               open(CMAKELISTS_TXT, "< $filepath") || die "Can't read $filepath!";
+               while ($line = <CMAKELISTS_TXT>) {
+                       # set(FULL_SO_VERSION "0.0.0")
+
+                       if ($line =~ /^(set\s*\(\s*FULL_SO_VERSION\s+"\d+\.\d+\.)\d+(".*)/) {
+                               $line = sprintf("$1%d$2\n", $version_pref{"version_micro"});
+                       }
+                       $contents .= $line
+               }
+
+               open(CMAKELISTS_TXT, "> $filepath") || die "Can't write $filepath!";
+               print(CMAKELISTS_TXT $contents);
+               close(CMAKELISTS_TXT);
+               print "$filepath has been updated.\n";
+       }
+}
+
 # Update distributed files that contain any version information
 sub update_versioned_files
 {
+       &update_cmakelists_txt;
        &update_configure_ac;
        &update_config_nmake;
        &update_release_notes;
        &update_debian_changelog;
-       &update_debian_wcf;
-       &update_lib_releases;
+       &update_automake_lib_releases;
+       &update_cmake_lib_releases;
 }
 
-# Print the SVN version to $version_file.
-# Don't change the file if it is not needed.
-sub print_svn_revision
+sub new_version_h
 {
-       my $svn_revision;
-       my $needs_update = 1;
+       my $VCS_REVISION;
 
        if ($git_description) {
-               $svn_revision = "#define SVNVERSION \"" .
+               $VCS_REVISION = "#define VCSVERSION \"" .
                        $git_description . "\"\n" .
-                       "#define SVNPATH \"" . $repo_path . "\"\n";
-       } elsif ($last_change && $revision) {
-               $svn_revision = "#define SVNVERSION \"SVN Rev " .
-                       $revision . "\"\n" .
-                       "#define SVNPATH \"" . $repo_path . "\"\n";
+                       "#define VCSBRANCH \"" . $repo_branch . "\"\n";
+       } elsif ($last_change && $num_commits) {
+               $VCS_REVISION = "#define VCSVERSION \"" . $vcs_name . " Rev " .
+                       $num_commits . "\"\n" .
+                       "#define VCSBRANCH \"" . $repo_branch . "\"\n";
        } else {
-               $svn_revision = "#define SVNVERSION \"SVN Rev Unknown\"\n" .
-                       "#define SVNPATH \"unknown\"\n";
+               $VCS_REVISION = "#define VCSVERSION \"" . $vcs_name .
+                       " Rev Unknown\"\n" .
+                       "#define VCSBRANCH \"unknown\"\n";
        }
+
+       return $VCS_REVISION;
+}
+
+# Print the version control system's version to $version_file.
+# Don't change the file if it is not needed.
+sub print_VCS_REVISION
+{
+       my $VCS_REVISION = new_version_h();
+       my $needs_update = 1;
        if (open(OLDREV, "<$version_file")) {
-               my $old_svn_revision = <OLDREV> . <OLDREV>;
-               if ($old_svn_revision eq $svn_revision) {
+               my $old_VCS_REVISION = <OLDREV> . <OLDREV>;
+               if ($old_VCS_REVISION eq $VCS_REVISION) {
                        $needs_update = 0;
                }
                close OLDREV;
        }
 
-       if (! $set_svn) { return; }
+       if (! $set_vcs) { return; }
 
        if ($needs_update) {
-               # print "Updating $version_file so it contains:\n$svn_revision";
+               # print "Updating $version_file so it contains:\n$VCS_REVISION";
                open(VER, ">$version_file") || die ("Cannot write to $version_file ($!)\n");
-               print VER "$svn_revision";
+               print VER "$VCS_REVISION";
                close VER;
                print "$version_file has been updated.\n";
        } else {
@@ -627,16 +689,18 @@ sub get_config {
        # XXX - Do we need an option to undo --set-release?
        GetOptions(
                   "help|h", \$show_help,
-                  "get-svn|g", \$get_svn,
-                  "set-svn|s", \$set_svn,
+                  "get-vcs|get-svn|g", \$get_vcs,
+                  "set-vcs|set-svn|s", \$set_vcs,
+                  "git-bin", \$git_executable,
+                  "print-vcs", \$print_vcs,
                   "set-version|v", \$set_version,
                   "set-release|r|package-version|p", \$set_release
                   ) || pod2usage(2);
 
        if ($show_help) { pod2usage(1); }
 
-       if ( !( $show_help || $get_svn || $set_svn || $set_version || $set_release ) ) {
-               $set_svn = 1;
+       if ( !( $show_help || $get_vcs || $set_vcs || $print_vcs || $set_version || $set_release ) ) {
+               $set_vcs = 1;
        }
 
        if ($#ARGV >= 0) {
@@ -650,7 +714,7 @@ sub get_config {
        }
 
        while (<FILE>) {
-               chomp;
+               s/^\s+|\s+$//g; # chomp() may not handle CR
                next if (/^#/);
                next unless (/^(\w+)(:|=)\s*(\S.*)/);
                $version_pref{$1} = $3;
@@ -667,7 +731,7 @@ sub get_config {
 
 &read_repo_info();
 
-&print_svn_revision;
+&print_VCS_REVISION;
 
 if ($set_version || $set_release) {
        if ($set_version) {
@@ -683,7 +747,7 @@ if ($set_version || $set_release) {
                print "Generating release information\n";
        } else {
                print "Resetting release information\n";
-               $revision = 0;
+               $num_commits = 0;
                $package_string = "";
        }
 
@@ -703,8 +767,9 @@ make-version.pl [options] [source directory]
   Options:
 
     --help, -h                 This help message
-    --get-svn, -g              Print the SVN revision and source.
-    --set-svn, -s              Set the information in svnversion.h
+    --get-vcs, -g              Print the VCS revision and source.
+    --set-vcs, -s              Set the information in version.h
+    --print-vcs                Print the vcs version to standard output
     --set-version, -v          Set the major, minor, and micro versions in
                                configure.ac, config.nmake, debian/changelog,
                               and docbook/asciidoc.conf.
@@ -717,6 +782,8 @@ make-version.pl [options] [source directory]
 Options can be used in any combination. If none are specified B<--set-svn>
 is assumed.
 
+=cut
+
 #
 # Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 #