package ExtUtils::Manifest;
-=head1 NAME
-
-ExtUtils::Manifest - utilities to write and check a MANIFEST file
-
-=head1 SYNOPSIS
-
-C<require ExtUtils::Manifest;>
-
-C<ExtUtils::Manifest::mkmanifest;>
-
-C<ExtUtils::Manifest::manicheck;>
-
-C<ExtUtils::Manifest::filecheck;>
-
-C<ExtUtils::Manifest::fullcheck;>
-
-C<ExtUtils::Manifest::maniread($file);>
-
-C<ExtUtils::Manifest::manicopy($read,$target,$how);>
-
-=head1 DESCRIPTION
-
-Mkmanifest() writes all files in and below the current directory to a
-file named C<MANIFEST> in the current directory. It works similar to
-
- find . -print
-
-but in doing so checks each line in an existing C<MANIFEST> file and
-includes any comments that are found in the existing C<MANIFEST> file
-in the new one. Anything between white space and an end of line within
-a C<MANIFEST> file is considered to be a comment. Filenames and
-comments are seperated by one or more TAB characters in the
-output. All files that match any regular expression in a file
-C<MANIFEST.SKIP> (if such a file exists) are ignored.
-
-Manicheck() checks if all the files within a C<MANIFEST> in the current
-directory really do exist.
-
-Filecheck() finds files below the current directory that are not
-mentioned in the C<MANIFEST> file. An optional file C<MANIFEST.SKIP>
-will be consulted. Any file matching a regular expression in such a
-file will not be reported as missing in the C<MANIFEST> file.
-
-Fullcheck() does both a manicheck() and a filecheck().
-
-Maniread($file) reads a named C<MANIFEST> file (defaults to
-C<MANIFEST> in the current directory) and returns a HASH reference
-with files being the keys and comments being the values of the HASH.
-
-I<Manicopy($read,$target,$how)> copies the files that are the keys in
-the HASH I<%$read> to the named target directory. The HASH reference
-I<$read> is typically returned by the maniread() function. This
-function is useful for producing a directory tree identical to the
-intended distribution tree. The third parameter $how can be used to
-specify a different system call to do the copying (eg. C<ln> instead
-of C<cp>, which is the default).
-
-=head1 MANIFEST.SKIP
-
-The file MANIFEST.SKIP may contain regular expressions of files that
-should be ignored by mkmanifest() and filecheck(). The regular
-expressions should appear one on each line. A typical example:
-
- \bRCS\b
- ^MANIFEST\.
- ^Makefile$
- ~$
- \.html$
- \.old$
- ^blib/
- ^MakeMaker-\d
-
-=head1 EXPORT_OK
-
-C<&mkmanifest>, C<&manicheck>, C<&filecheck>, C<&fullcheck>,
-C<&maniread>, and C<&manicopy> are exportable.
-
-=head1 DIAGNOSTICS
-
-All diagnostic output is sent to C<STDERR>.
-
-=over
-
-=item C<Not in MANIFEST:> I<file>
-
-is reported if a file is found, that is missing in the C<MANIFEST>
-file which is excluded by a regular expression in the file
-C<MANIFEST.SKIP>.
-
-=item C<No such file:> I<file>
-
-is reported if a file mentioned in a C<MANIFEST> file does not
-exist.
-
-=item C<MANIFEST:> I<$!>
-
-is reported if C<MANIFEST> could not be opened.
-
-=item C<Added to MANIFEST:> I<file>
-
-is reported by mkmanifest() if $Verbose is set and a file is added
-to MANIFEST. $Verbose is set to 1 by default.
-
-=back
-
-=head1 AUTHOR
-
-Andreas Koenig F<E<lt>koenig@franz.ww.TU-Berlin.DEE<gt>>
-
-=cut
-
require Exporter;
-@ISA=('Exporter');
-@EXPORT_OK = ('mkmanifest', 'manicheck', 'fullcheck', 'filecheck',
- 'skipcheck', 'maniread', 'manicopy');
-
use Config;
use File::Find;
+use File::Copy 'copy';
+use File::Spec::Functions qw(splitpath);
use Carp;
+use strict;
-$Debug = 0;
-$Verbose = 1;
-$Is_VMS = $Config{'osname'} eq 'VMS';
+our ($VERSION,@ISA,@EXPORT_OK,
+ $Is_MacOS,$Is_VMS,
+ $Debug,$Verbose,$Quiet,$MANIFEST,$DEFAULT_MSKIP);
+
+$VERSION = 1.37_01;
+@ISA=('Exporter');
+@EXPORT_OK = ('mkmanifest', 'manicheck', 'fullcheck', 'filecheck',
+ 'skipcheck', 'maniread', 'manicopy');
-($Version) = sprintf("%d.%02d", q$Revision: 1.11 $ =~ /(\d+)\.(\d+)/);
-$Version = $Version; #avoid warning
+$Is_MacOS = $^O eq 'MacOS';
+$Is_VMS = $^O eq 'VMS';
+require VMS::Filespec if $Is_VMS;
+$Debug = $ENV{PERL_MM_MANIFEST_DEBUG} || 0;
+$Verbose = defined $ENV{PERL_MM_MANIFEST_VERBOSE} ?
+ $ENV{PERL_MM_MANIFEST_VERBOSE} : 1;
$Quiet = 0;
+$MANIFEST = 'MANIFEST';
+$DEFAULT_MSKIP = (splitpath($INC{"ExtUtils/Manifest.pm"}))[1]."$MANIFEST.SKIP";
+
+# Really cool fix from Ilya :)
+unless (defined $Config{d_link}) {
+ no warnings;
+ *ln = \&cp;
+}
sub mkmanifest {
my $manimiss = 0;
- my $read = maniread() or $manimiss++;
+ my $read = (-r 'MANIFEST' && maniread()) or $manimiss++;
$read = {} if $manimiss;
- my $matches = _maniskip();
+ local *M;
+ rename $MANIFEST, "$MANIFEST.bak" unless $manimiss;
+ open M, ">$MANIFEST" or die "Could not open $MANIFEST: $!";
+ my $skip = _maniskip();
my $found = manifind();
my($key,$val,$file,%all);
- my %all = (%$found, %$read);
- local *M;
- rename "MANIFEST", "MANIFEST.bak" unless $manimiss;
- open M, ">MANIFEST" or die "Could not open MANIFEST: $!";
+ %all = (%$found, %$read);
+ $all{$MANIFEST} = ($Is_VMS ? "$MANIFEST\t\t" : '') . 'This list of files'
+ if $manimiss; # add new MANIFEST to known file list
foreach $file (sort keys %all) {
- next if &$matches($file);
+ if ($skip->($file)) {
+ # Policy: only remove files if they're listed in MANIFEST.SKIP.
+ # Don't remove files just because they don't exist.
+ warn "Removed from $MANIFEST: $file\n" if $Verbose and exists $read->{$file};
+ next;
+ }
if ($Verbose){
- warn "Added to MANIFEST: $file\n" unless exists $read->{$file};
+ warn "Added to $MANIFEST: $file\n" unless exists $read->{$file};
}
my $text = $all{$file};
- ($file,$text) = split(/\s+/,$text,2) if $Is_VMS;
+ ($file,$text) = split(/\s+/,$text,2) if $Is_VMS && $text;
+ $file = _unmacify($file);
my $tabs = (5 - (length($file)+1)/8);
$tabs = 1 if $tabs < 1;
$tabs = 0 unless $text;
close M;
}
+# Geez, shouldn't this use File::Spec or File::Basename or something?
+# Why so careful about dependencies?
+sub clean_up_filename {
+ my $filename = shift;
+ $filename =~ s|^\./||;
+ $filename =~ s/^:([^:]+)$/$1/ if $Is_MacOS;
+ return $filename;
+}
+
sub manifind {
- local $found = {};
- find(sub {return if -d $File::Find::name;
- (my $name = $File::Find::name) =~ s|./||;
- warn "Debug: diskfile $name\n" if $Debug;
- $name =~ s#(.*)\.$#\L$1# if $Is_VMS;
- $found->{$name} = "";}, ".");
- $found;
+ my $p = shift || {};
+ my $skip = _maniskip(warn => $p->{warn_on_skip});
+ my $found = {};
+
+ my $wanted = sub {
+ my $name = clean_up_filename($File::Find::name);
+ warn "Debug: diskfile $name\n" if $Debug;
+ return if $skip->($name) or -d $name;
+
+ if( $Is_VMS ) {
+ $name =~ s#(.*)\.$#\L$1#;
+ $name = uc($name) if $name =~ /^MANIFEST(\.SKIP)?$/i;
+ }
+ $found->{$name} = "";
+ };
+
+ # We have to use "$File::Find::dir/$_" in preprocess, because
+ # $File::Find::name is unavailable.
+ # Also, it's okay to use / here, because MANIFEST files use Unix-style
+ # paths.
+ find({wanted => $wanted,
+ preprocess =>
+ sub {grep {!$skip->( clean_up_filename("$File::Find::dir/$_") )} @_},
+ no_chdir => 1,
+ },
+ $Is_MacOS ? ":" : ".");
+
+ return $found;
}
sub fullcheck {
- _manicheck(3);
+ _manicheck({check_files => 1, check_MANIFEST => 1});
}
sub manicheck {
- return @{(_manicheck(1))[0]};
+ return @{(_manicheck({check_files => 1}))[0]};
}
sub filecheck {
- return @{(_manicheck(2))[1]};
+ return @{(_manicheck({check_MANIFEST => 1}))[1]};
}
sub skipcheck {
- _manicheck(6);
+ _manicheck({check_MANIFEST => 1, warn_on_skip => 1});
}
sub _manicheck {
- my($arg) = @_;
+ my($p) = @_;
my $read = maniread();
+ my $found = manifind($p);
+
my $file;
+ my $dosnames=(defined(&Dos::UseLFN) && Dos::UseLFN()==0);
my(@missfile,@missentry);
- if ($arg & 1){
- my $found = manifind();
+ if ($p->{check_files}){
foreach $file (sort keys %$read){
- warn "Debug: manicheck checking from MANIFEST $file\n" if $Debug;
+ warn "Debug: manicheck checking from $MANIFEST $file\n" if $Debug;
+ if ($dosnames){
+ $file = lc $file;
+ $file =~ s=(\.(\w|-)+)=substr ($1,0,4)=ge;
+ $file =~ s=((\w|-)+)=substr ($1,0,8)=ge;
+ }
unless ( exists $found->{$file} ) {
warn "No such file: $file\n" unless $Quiet;
push @missfile, $file;
}
}
}
- if ($arg & 2){
+ if ($p->{check_MANIFEST}){
$read ||= {};
my $matches = _maniskip();
- my $found = manifind();
- my $skipwarn = $arg & 4;
foreach $file (sort keys %$found){
if (&$matches($file)){
- warn "Skipping $file\n" if $skipwarn;
+ warn "Skipping $file\n" if $p->{warn_on_skip};
next;
}
warn "Debug: manicheck checking from disk $file\n" if $Debug;
unless ( exists $read->{$file} ) {
- warn "Not in MANIFEST: $file\n" unless $Quiet;
+ my $canon = $Is_MacOS ? "\t" . _unmacify($file) : '';
+ warn "Not in $MANIFEST: $file$canon\n" unless $Quiet;
push @missentry, $file;
}
}
sub maniread {
my ($mfile) = @_;
- $mfile = "MANIFEST" unless defined $mfile;
+ $mfile ||= $MANIFEST;
my $read = {};
local *M;
unless (open M, $mfile){
}
while (<M>){
chomp;
- if ($Is_VMS) { /^(\S+)/ and $read->{"\L$1"}=$_; }
- else { /^(\S+)\s*(.*)/ and $read->{$1}=$2; }
+ next if /^#/;
+
+ my($file, $comment) = /^(\S+)\s*(.*)/;
+ next unless $file;
+
+ if ($Is_MacOS) {
+ $file = _macify($file);
+ $file =~ s/\\([0-3][0-7][0-7])/sprintf("%c", oct($1))/ge;
+ }
+ elsif ($Is_VMS) {
+ require File::Basename;
+ my($base,$dir) = File::Basename::fileparse($file);
+ # Resolve illegal file specifications in the same way as tar
+ $dir =~ tr/./_/;
+ my(@pieces) = split(/\./,$base);
+ if (@pieces > 2) { $base = shift(@pieces) . '.' . join('_',@pieces); }
+ my $okfile = "$dir$base";
+ warn "Debug: Illegal name $file changed to $okfile\n" if $Debug;
+ $file = $okfile;
+ $file = lc($file) unless $file =~ /^MANIFEST(\.SKIP)?$/;
+ }
+
+ $read->{$file} = $comment;
}
close M;
$read;
# returns an anonymous sub that decides if an argument matches
sub _maniskip {
- my ($mfile) = @_;
- my $matches = sub {0};
+ my (%args) = @_;
+
my @skip ;
- my $mfile = "MANIFEST.SKIP" unless defined $mfile;
+ my $mfile ||= "$MANIFEST.SKIP";
local *M;
- return $matches unless -f $mfile;
- open M, $mfile or return $matches;
+ open M, $mfile or open M, $DEFAULT_MSKIP or return sub {0};
while (<M>){
chomp;
+ next if /^#/;
next if /^\s*$/;
- push @skip, $_;
+ push @skip, _macify($_);
}
close M;
- my $opts = $Is_VMS ? 'oi ' : 'o ';
- my $sub = "\$matches = "
- . "sub { my(\$arg)=\@_; return 1 if "
- . join (" || ", (map {s!/!\\/!g; "\$arg =~ m/$_/$opts"} @skip), 0)
- . " }";
- eval $sub;
- print "Debug: $sub\n" if $Debug;
- $matches;
+ my $opts = $Is_VMS ? '(?i)' : '';
+
+ # Make sure each entry is isolated in its own parentheses, in case
+ # any of them contain alternations
+ my $regex = join '|', map "(?:$_)", @skip;
+
+ return ($args{warn}
+ ? sub { $_[0] =~ qr{$opts$regex} && warn "Skipping $_[0]\n" }
+ : sub { $_[0] =~ qr{$opts$regex} }
+ );
}
sub manicopy {
my($read,$target,$how)=@_;
croak "manicopy() called without target argument" unless defined $target;
- $how = 'cp' unless defined $how && $how;
+ $how ||= 'cp';
require File::Path;
require File::Basename;
my(%dirs,$file);
$target = VMS::Filespec::unixify($target) if $Is_VMS;
- umask 0;
+ File::Path::mkpath([ $target ],! $Quiet,$Is_VMS ? undef : 0755);
foreach $file (keys %$read){
- $file = VMS::Filespec::unixify($file) if $Is_VMS;
- my $dir = File::Basename::dirname($file);
- File::Path::mkpath(["$target/$dir"],1,0755);
- if ($Is_VMS) { vms_cp_if_diff($file,"$target/$file"); }
- else { cp_if_diff($file, "$target/$file", $how); }
+ if ($Is_MacOS) {
+ if ($file =~ m!:!) {
+ my $dir = _maccat($target, $file);
+ $dir =~ s/[^:]+$//;
+ File::Path::mkpath($dir,1,0755);
+ }
+ cp_if_diff($file, _maccat($target, $file), $how);
+ } else {
+ $file = VMS::Filespec::unixify($file) if $Is_VMS;
+ if ($file =~ m!/!) { # Ilya, that hurts, I fear, or maybe not?
+ my $dir = File::Basename::dirname($file);
+ $dir = VMS::Filespec::unixify($dir) if $Is_VMS;
+ File::Path::mkpath(["$target/$dir"],! $Quiet,$Is_VMS ? undef : 0755);
+ }
+ cp_if_diff($file, "$target/$file", $how);
+ }
}
}
sub cp_if_diff {
- my($from,$to, $how)=@_;
- -f $from || carp "$0: $from not found";
+ my($from, $to, $how)=@_;
+ -f $from or carp "$0: $from not found";
my($diff) = 0;
local(*F,*T);
- open(F,$from) or croak "Can't read $from: $!\n";
- if (open(T,$to)) {
+ open(F,"< $from\0") or croak "Can't read $from: $!\n";
+ if (open(T,"< $to\0")) {
while (<F>) { $diff++,last if $_ ne <T>; }
$diff++ unless eof(T);
close T;
if (-e $to) {
unlink($to) or confess "unlink $to: $!";
}
- &$how($from, $to);
- }
-}
-
-# Do the comparisons here rather than spawning off another process
-sub vms_cp_if_diff {
- my($from,$to) = @_;
- my($diff) = 0;
- local(*F,*T);
- open(F,$from) or croak "Can't read $from: $!\n";
- if (open(T,$to)) {
- while (<F>) { $diff++,last if $_ ne <T>; }
- $diff++ unless eof(T);
- close T;
- }
- else { $diff++; }
- close F;
- if ($diff) {
- system('copy',vmsify($from),vmsify($to)) & 1
- or confess "Copy failed: $!";
+ STRICT_SWITCH: {
+ best($from,$to), last STRICT_SWITCH if $how eq 'best';
+ cp($from,$to), last STRICT_SWITCH if $how eq 'cp';
+ ln($from,$to), last STRICT_SWITCH if $how eq 'ln';
+ croak("ExtUtils::Manifest::cp_if_diff " .
+ "called with illegal how argument [$how]. " .
+ "Legal values are 'best', 'cp', and 'ln'.");
+ }
}
}
sub cp {
my ($srcFile, $dstFile) = @_;
- my $buf;
- open (IN,"<$srcFile") or die "Can't open input $srcFile: $!\n";
- open (OUT,">$dstFile") or die "Can't open output $dstFile: $!\n";
- my ($perm,$access,$mod) = (stat IN)[2,8,9];
- syswrite(OUT, $buf, $len) while $len = sysread(IN, $buf, 8192);
- close IN;
- close OUT;
- utime $access, $mod, $dstFile;
+ my ($perm,$access,$mod) = (stat $srcFile)[2,8,9];
+ copy($srcFile,$dstFile);
+ utime $access, $mod + ($Is_VMS ? 1 : 0), $dstFile;
# chmod a+rX-w,go-w
- chmod( 0444 | ( $perm & 0111 ? 0111 : 0 ), $dstFile );
+ chmod( 0444 | ( $perm & 0111 ? 0111 : 0 ), $dstFile ) unless ($^O eq 'MacOS');
}
sub ln {
my ($srcFile, $dstFile) = @_;
+ return &cp if $Is_VMS or ($^O eq 'MSWin32' and Win32::IsWin95());
link($srcFile, $dstFile);
local($_) = $dstFile; # chmod a+r,go-w+X (except "X" only applies to u=x)
my $mode= 0444 | (stat)[2] & 0700;
- chmod( $mode | ( $mode & 0100 ? 0111 : 0 ), $_ );
+ if (! chmod( $mode | ( $mode & 0100 ? 0111 : 0 ), $_ )) {
+ unlink $dstFile;
+ return;
+ }
+ 1;
+}
+
+sub best {
+ my ($srcFile, $dstFile) = @_;
+ if (-l $srcFile) {
+ cp($srcFile, $dstFile);
+ } else {
+ ln($srcFile, $dstFile) or cp($srcFile, $dstFile);
+ }
+}
+
+sub _macify {
+ my($file) = @_;
+
+ return $file unless $Is_MacOS;
+
+ $file =~ s|^\./||;
+ if ($file =~ m|/|) {
+ $file =~ s|/+|:|g;
+ $file = ":$file";
+ }
+
+ $file;
+}
+
+sub _maccat {
+ my($f1, $f2) = @_;
+
+ return "$f1/$f2" unless $Is_MacOS;
+
+ $f1 .= ":$f2";
+ $f1 =~ s/([^:]:):/$1/g;
+ return $f1;
+}
+
+sub _unmacify {
+ my($file) = @_;
+
+ return $file unless $Is_MacOS;
+
+ $file =~ s|^:||;
+ $file =~ s|([/ \n])|sprintf("\\%03o", unpack("c", $1))|ge;
+ $file =~ y|:|/|;
+
+ $file;
}
1;
+
+__END__
+
+=head1 NAME
+
+ExtUtils::Manifest - utilities to write and check a MANIFEST file
+
+=head1 SYNOPSIS
+
+ require ExtUtils::Manifest;
+
+ ExtUtils::Manifest::mkmanifest;
+
+ ExtUtils::Manifest::manicheck;
+
+ ExtUtils::Manifest::filecheck;
+
+ ExtUtils::Manifest::fullcheck;
+
+ ExtUtils::Manifest::skipcheck;
+
+ ExtUtils::Manifest::manifind();
+
+ ExtUtils::Manifest::maniread($file);
+
+ ExtUtils::Manifest::manicopy($read,$target,$how);
+
+=head1 DESCRIPTION
+
+mkmanifest() writes all files in and below the current directory to a
+file named in the global variable $ExtUtils::Manifest::MANIFEST (which
+defaults to C<MANIFEST>) in the current directory. It works similar to
+
+ find . -print
+
+but in doing so checks each line in an existing C<MANIFEST> file and
+includes any comments that are found in the existing C<MANIFEST> file
+in the new one. Anything between white space and an end of line within
+a C<MANIFEST> file is considered to be a comment. Filenames and
+comments are separated by one or more TAB characters in the
+output. All files that match any regular expression in a file
+C<MANIFEST.SKIP> (if such a file exists) are ignored.
+
+manicheck() checks if all the files within a C<MANIFEST> in the current
+directory really do exist. If C<MANIFEST> and the tree below the current
+directory are in sync it exits silently, returning an empty list. Otherwise
+it returns a list of files which are listed in the C<MANIFEST> but missing
+from the directory, and by default also outputs these names to STDERR.
+
+filecheck() finds files below the current directory that are not
+mentioned in the C<MANIFEST> file. An optional file C<MANIFEST.SKIP>
+will be consulted. Any file matching a regular expression in such a
+file will not be reported as missing in the C<MANIFEST> file. The list of
+any extraneous files found is returned, and by default also reported to
+STDERR.
+
+fullcheck() does both a manicheck() and a filecheck(), returning references
+to two arrays, the first for files manicheck() found to be missing, the
+seond for unexpeced files found by filecheck().
+
+skipcheck() lists all the files that are skipped due to your
+C<MANIFEST.SKIP> file.
+
+manifind() returns a hash reference. The keys of the hash are the
+files found below the current directory.
+
+maniread($file) reads a named C<MANIFEST> file (defaults to
+C<MANIFEST> in the current directory) and returns a HASH reference
+with files being the keys and comments being the values of the HASH.
+Blank lines and lines which start with C<#> in the C<MANIFEST> file
+are discarded.
+
+C<manicopy($read,$target,$how)> copies the files that are the keys in
+the HASH I<%$read> to the named target directory. The HASH reference
+$read is typically returned by the maniread() function. This
+function is useful for producing a directory tree identical to the
+intended distribution tree. The third parameter $how can be used to
+specify a different methods of "copying". Valid values are C<cp>,
+which actually copies the files, C<ln> which creates hard links, and
+C<best> which mostly links the files but copies any symbolic link to
+make a tree without any symbolic link. Best is the default.
+
+=head1 MANIFEST.SKIP
+
+The file MANIFEST.SKIP may contain regular expressions of files that
+should be ignored by mkmanifest() and filecheck(). The regular
+expressions should appear one on each line. Blank lines and lines
+which start with C<#> are skipped. Use C<\#> if you need a regular
+expression to start with a sharp character. A typical example:
+
+ # Version control files and dirs.
+ \bRCS\b
+ \bCVS\b
+ ,v$
+
+ # Makemaker generated files and dirs.
+ ^MANIFEST\.
+ ^Makefile$
+ ^blib/
+ ^MakeMaker-\d
+
+ # Temp, old and emacs backup files.
+ ~$
+ \.old$
+ ^#.*#$
+ ^\.#
+
+If no MANIFEST.SKIP file is found, a default set of skips will be
+used, similar to the example above. If you want nothing skipped,
+simply make an empty MANIFEST.SKIP file.
+
+
+=head1 EXPORT_OK
+
+C<&mkmanifest>, C<&manicheck>, C<&filecheck>, C<&fullcheck>,
+C<&maniread>, and C<&manicopy> are exportable.
+
+=head1 GLOBAL VARIABLES
+
+C<$ExtUtils::Manifest::MANIFEST> defaults to C<MANIFEST>. Changing it
+results in both a different C<MANIFEST> and a different
+C<MANIFEST.SKIP> file. This is useful if you want to maintain
+different distributions for different audiences (say a user version
+and a developer version including RCS).
+
+C<$ExtUtils::Manifest::Quiet> defaults to 0. If set to a true value,
+all functions act silently.
+
+C<$ExtUtils::Manifest::Debug> defaults to 0. If set to a true value,
+or if PERL_MM_MANIFEST_DEBUG is true, debugging output will be
+produced.
+
+=head1 DIAGNOSTICS
+
+All diagnostic output is sent to C<STDERR>.
+
+=over 4
+
+=item C<Not in MANIFEST:> I<file>
+
+is reported if a file is found, that is missing in the C<MANIFEST>
+file which is excluded by a regular expression in the file
+C<MANIFEST.SKIP>.
+
+=item C<No such file:> I<file>
+
+is reported if a file mentioned in a C<MANIFEST> file does not
+exist.
+
+=item C<MANIFEST:> I<$!>
+
+is reported if C<MANIFEST> could not be opened.
+
+=item C<Added to MANIFEST:> I<file>
+
+is reported by mkmanifest() if $Verbose is set and a file is added
+to MANIFEST. $Verbose is set to 1 by default.
+
+=back
+
+=head1 ENVIRONMENT
+
+=over 4
+
+=item B<PERL_MM_MANIFEST_DEBUG>
+
+Turns on debugging
+
+=back
+
+=head1 SEE ALSO
+
+L<ExtUtils::MakeMaker> which has handy targets for most of the functionality.
+
+=head1 AUTHOR
+
+Andreas Koenig <F<andreas.koenig@anima.de>>
+
+=cut