File: makerel

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#!/usr/bin/perl -w

# A tool to build a perl release tarball
# Very basic but functional - if you're on a unix system.
#
# If you're on Win32 then it should still work, but various Unix command-line
# tools will need to be available somewhere. An obvious choice is to install
# Cygwin and ensure its 'bin' folder is on the PATH in the shell where you run
# this script. The Cygwin 'bin' folder needs to precede the Windows 'system32'
# folder so that Cygwin's 'find' command is found in preference to the Windows
# 'find' command. In addition to the commands installed by default, your Cygwin
# installation will need to contain at least the 'cpio' and '7z' commands.
# Finally, ensure that the 'awk', 'shasum' (if you have it) and '7z' commands
# are copies of 'gawk.exe', 'sha1sum.exe' and 'lib\p7zip\7z.exe' respectively,
# rather than the links to them that only work in a Cygwin bash shell which
# they are by default.
#
# No matter how automated this gets, you'll always need to read
# and re-read pumpkin.pod and release_managers_guide.pod to
# check for things to be done at various stages of the process.
#
# Tim Bunce, June 1997

use ExtUtils::Manifest qw(fullcheck);
$ExtUtils::Manifest::Quiet = 1;
use Getopt::Std;

$|=1;

sub usage { die <<EOF; }
usage: $0 [ -r rootdir ] [-s suffix ] [ -b ] [ -n ]
    -r rootdir   directory under which to create the build dir and tarball
                 defaults to '..'
    -s suffix    suffix to append to to the perl-x.y.z dir and tarball name
		 defaults to the concatenation of the local_patches entry
		 in patchlevel.h (or blank, if none)
    -b           make a .bz2 file in addtion to a .gz file
    -x           make a .xz file in addtion to a .gz file
    -n           do not make any tarballs, just the directory
EOF

my %opts;
getopts('bxnr:s:', \%opts) or usage;
@ARGV && usage;

$relroot = defined $opts{r} ? $opts{r} : "..";

die "Must be in root of the perl source tree.\n"
	unless -f "./MANIFEST" and -f "patchlevel.h";

open PATCHLEVEL,"<patchlevel.h" or die;
my @patchlevel_h = <PATCHLEVEL>;
close PATCHLEVEL;
my $patchlevel_h = join "", grep { /^#\s*define/ } @patchlevel_h;
print $patchlevel_h;
$revision = $1 if $patchlevel_h =~ /PERL_REVISION\s+(\d+)/;
$patchlevel = $1 if $patchlevel_h =~ /PERL_VERSION\s+(\d+)/;
$subversion = $1 if $patchlevel_h =~ /PERL_SUBVERSION\s+(\d+)/;
die "Unable to parse patchlevel.h" unless $subversion >= 0;
$vers = sprintf("%d.%d.%d", $revision, $patchlevel, $subversion);

# fetch list of local patches
my (@local_patches, @lpatch_tags, $lpatch_tags);
@local_patches = grep { !/^\s*,?NULL/ && ! /,"uncommitted-changes"/ }
                 grep { /^static.*local_patches/../^};/ }
                 @patchlevel_h;
@lpatch_tags   = map  {  /^\s*,"(\w+)/ } @local_patches;
$lpatch_tags   = join "-", @lpatch_tags;

$perl = "perl-$vers";
$reldir = "$perl";

$lpatch_tags = $opts{s} if defined $opts{s};
$reldir .= "-$lpatch_tags" if $lpatch_tags;

print "\nMaking a release for $perl in $relroot/$reldir\n\n";

print "Cross-checking the MANIFEST...\n";
($missfile, $missentry) = fullcheck();
@$missentry
    = grep {$_ !~ m!^\.git/! and $_ !~ m!(?:/|^)\.gitignore!} @$missentry;
if (@$missfile ) {
    warn "Can't make a release with MANIFEST files missing:\n";
    warn "\t".$_."\n" for (@$missfile);
}
if (@$missentry ) {
    warn "Can't make a release with files not listed in MANIFEST\n";
    warn "\t".$_."\n" for (@$missentry);

}
if ("@$missentry" =~ m/\.orig\b/) {
    # Handy listing of find command and .orig files from patching work.
    # I tend to run 'xargs rm' and copy and paste the file list.
    my $cmd = "find . -name '*.orig' -print";
    print "$cmd\n";
    system($cmd);
}
die "Aborted.\n" if @$missentry or @$missfile;
print "\n";

# VMS no longer has hardcoded version numbers descrip.mms

print "Creating $relroot/$reldir release directory...\n";
die "$relroot/$reldir release directory already exists\n"   if -e "$relroot/$reldir";
die "$relroot/$reldir.tar.gz release file already exists\n" if -e "$relroot/$reldir.tar.gz";
mkdir("$relroot/$reldir", 0755) or die "mkdir $relroot/$reldir: $!\n";
print "\n";


print "Copying files to release directory...\n";
# ExtUtils::Manifest maniread does not preserve the order
$cmd = "awk '{print \$1}' MANIFEST | cpio -pdm $relroot/$reldir";
system($cmd) == 0
    or die "$cmd failed";
print "\n";

chdir "$relroot/$reldir" or die $!;


print "Setting file permissions...\n";
system("find . -type f -print     | xargs chmod 0444");
system("find . -type d -print     | xargs chmod 0755");
my @exe = map   { my ($f) = split; glob($f) }
          grep  { $_ !~ /\A#/ && $_ !~ /\A\s*\z/ }
          map   { split "\n" }
          do    { local (@ARGV, $/) = 'Porting/exec-bit.txt'; <> };

system("chmod +x @exe") == 0
    or die "system: $!";

my @writables = qw(
    NetWare/config_H.wc
    NetWare/Makefile
    feature.h
    lib/feature.pm
    keywords.h
    keywords.c
    opcode.h
    opnames.h
    pp_proto.h
    proto.h
    embed.h
    embedvar.h
    overload.inc
    overload.h
    mg_vtable.h
    perlapi.h
    perlapi.c
    cpan/Devel-PPPort/module2.c
    cpan/Devel-PPPort/module3.c
    cpan/autodie/t/touch_me
    reentr.c
    reentr.h
    regcharclass.h
    regnodes.h
    warnings.h
    lib/warnings.pm
    win32/GNUmakefile
    win32/Makefile
    win32/Makefile.ce
    win32/makefile.mk
    win32/config_H.ce
    win32/config_H.gc
    win32/config_H.vc
    uconfig.h
);

my $out = `chmod u+w @writables 2>&1`;
if ($? != 0) {
    warn $out;
    if ($out =~ /no such file/i) {
        warn "Check that the files above still exist in the Perl core.\n";
        warn "If not, remove them from \@writables in Porting/makerel\n";
    }
    exit 1;
}

warn $out if $out;

chdir ".." or die $!;

exit if $opts{n};

my $src = (-e $perl) ? $perl : 'perl'; # 'perl' in maint branch

print "Checking if you have 7z...\n";
my $output_7z = `7z 2>&1`;
my $have_7z = defined $output_7z && $output_7z =~ /7-Zip/;

print "Checking if you have advdef...\n";
my $output_advdef = `advdef --version 2>&1`;
my $have_advdef = defined $output_advdef && $output_advdef =~ /advancecomp/;

if ($have_7z) {
    print "Creating and compressing the tar.gz file with 7z...\n";
    $cmd = "tar cf - $reldir | 7z a -tgzip -mx9 -bd -si $reldir.tar.gz";
    system($cmd) == 0 or die "$cmd failed";
} else {
    print "Creating and compressing the tar.gz file...\n";
    $cmd = "tar cf - $reldir | gzip --best > $reldir.tar.gz";
    system($cmd) == 0 or die "$cmd failed";
    if ($have_advdef) {
        print "Recompressing the tar.gz file with advdef...\n";
        $cmd = "advdef -z -4 $reldir.tar.gz";
        system($cmd) == 0 or die "$cmd failed";
    }
}

if ($opts{b}) {
    if ($have_7z) {
        print "Creating and compressing the tar.bz2 file with 7z...\n";
        $cmd = "tar cf - $reldir | 7z a -tbzip2 -mx9 -bd -si $reldir.tar.bz2";
        system($cmd) == 0 or die "$cmd failed";
    } else {
        print "Creating and compressing the tar.bz2 file...\n";
        $cmd = "tar cf - $reldir | bzip2 > $reldir.tar.bz2";
        system($cmd) == 0 or die "$cmd failed";
    }
}

if ($opts{x}) {
    print "Creating and compressing the tar.gz file with 7z...\n";
    $cmd = "tar cf - $reldir | xz -z -c > $reldir.tar.xz";
    system($cmd) == 0 or die "$cmd failed";
}

print "\n";

system("ls -ld $perl*");
print "\n";

my $null = $^O eq 'MSWin32' ? 'NUL' : '/dev/null';
for my $sha (qw(sha1 shasum sha1sum)) {
    if (`which $sha 2>$null`) {
	system("$sha $perl*.tar.*");
	last;
    }
}