mm_unix.pm

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

=cut

sub depend {
    my($self,%attribs) = @_;
    my(@m,$key,$val);
    while (($key,$val) = each %attribs){
	last unless defined $key;
	push @m, "$key : $val\n";
    }
    join "", @m;
}


=item init_DEST

  $mm->init_DEST

Defines the DESTDIR and DEST* variables paralleling the INSTALL*.

=cut

sub init_DEST {
    my $self = shift;

    # Initialize DESTDIR
    $self->{DESTDIR} ||= '';

    # Make DEST variables.
    foreach my $var ($self->installvars) {
        my $destvar = 'DESTINSTALL'.$var;
        $self->{$destvar} ||= '$(DESTDIR)$(INSTALL'.$var.')';
    }
}


=item init_dist

  $mm->init_dist;

Defines a lot of macros for distribution support.

  macro         description                     default

  TAR           tar command to use              tar
  TARFLAGS      flags to pass to TAR            cvf

  ZIP           zip command to use              zip
  ZIPFLAGS      flags to pass to ZIP            -r

  COMPRESS      compression command to          gzip --best
                use for tarfiles
  SUFFIX        suffix to put on                .gz 
                compressed files

  SHAR          shar command to use             shar

  PREOP         extra commands to run before
                making the archive 
  POSTOP        extra commands to run after
                making the archive

  TO_UNIX       a command to convert linefeeds
                to Unix style in your archive 

  CI            command to checkin your         ci -u
                sources to version control
  RCS_LABEL     command to label your sources   rcs -Nv$(VERSION_SYM): -q
                just after CI is run

  DIST_CP       $how argument to manicopy()     best
                when the distdir is created

  DIST_DEFAULT  default target to use to        tardist
                create a distribution

  DISTVNAME     name of the resulting archive   $(DISTNAME)-$(VERSION)
                (minus suffixes)

=cut

sub init_dist {
    my $self = shift;

    $self->{TAR}      ||= 'tar';
    $self->{TARFLAGS} ||= 'cvf';
    $self->{ZIP}      ||= 'zip';
    $self->{ZIPFLAGS} ||= '-r';
    $self->{COMPRESS} ||= 'gzip --best';
    $self->{SUFFIX}   ||= '.gz';
    $self->{SHAR}     ||= 'shar';
    $self->{PREOP}    ||= '$(NOECHO) $(NOOP)'; # eg update MANIFEST
    $self->{POSTOP}   ||= '$(NOECHO) $(NOOP)'; # eg remove the distdir
    $self->{TO_UNIX}  ||= '$(NOECHO) $(NOOP)';

    $self->{CI}       ||= 'ci -u';
    $self->{RCS_LABEL}||= 'rcs -Nv$(VERSION_SYM): -q';
    $self->{DIST_CP}  ||= 'best';
    $self->{DIST_DEFAULT} ||= 'tardist';

    ($self->{DISTNAME} = $self->{NAME}) =~ s{::}{-}g unless $self->{DISTNAME};
    $self->{DISTVNAME} ||= $self->{DISTNAME}.'-'.$self->{VERSION};

}

=item dist (o)

  my $dist_macros = $mm->dist(%overrides);

Generates a make fragment defining all the macros initialized in
init_dist.

%overrides can be used to override any of the above.

=cut

sub dist {
    my($self, %attribs) = @_;

    my $make = '';
    foreach my $key (qw( 
            TAR TARFLAGS ZIP ZIPFLAGS COMPRESS SUFFIX SHAR
            PREOP POSTOP TO_UNIX
            CI RCS_LABEL DIST_CP DIST_DEFAULT
            DISTNAME DISTVNAME
           ))
    {
        my $value = $attribs{$key} || $self->{$key};
        $make .= "$key = $value\n";
    }

    return $make;
}

=item dist_basics (o)

Defines the targets distclean, distcheck, skipcheck, manifest, veryclean.

=cut

sub dist_basics {
    my($self) = shift;

    return <<'MAKE_FRAG';
distclean :: realclean distcheck
	$(NOECHO) $(NOOP)

distcheck :
	$(PERLRUN) "-MExtUtils::Manifest=fullcheck" -e fullcheck

skipcheck :
	$(PERLRUN) "-MExtUtils::Manifest=skipcheck" -e skipcheck

manifest :
	$(PERLRUN) "-MExtUtils::Manifest=mkmanifest" -e mkmanifest

veryclean : realclean
	$(RM_F) *~ */*~ *.orig */*.orig *.bak */*.bak *.old */*.old 

MAKE_FRAG

}

=item dist_ci (o)

Defines a check in target for RCS.

=cut

sub dist_ci {
    my($self) = shift;
    return q{
ci :
	$(PERLRUN) "-MExtUtils::Manifest=maniread" \\
	  -e "@all = keys %{ maniread() };" \\
	  -e "print(qq{Executing $(CI) @all\n}); system(qq{$(CI) @all});" \\
	  -e "print(qq{Executing $(RCS_LABEL) ...\n}); system(qq{$(RCS_LABEL) @all});"
};
}

=item dist_core (o)

  my $dist_make_fragment = $MM->dist_core;

Puts the targets necessary for 'make dist' together into one make
fragment.

=cut

sub dist_core {
    my($self) = shift;

    my $make_frag = '';
    foreach my $target (qw(dist tardist uutardist tarfile zipdist zipfile 
                           shdist))
    {
        my $method = $target.'_target';
        $make_frag .= "\n";
        $make_frag .= $self->$method();
    }

    return $make_frag;
}


=item B<dist_target>

  my $make_frag = $MM->dist_target;

Returns the 'dist' target to make an archive for distribution.  This
target simply checks to make sure the Makefile is up-to-date and
depends on $(DIST_DEFAULT).

=cut

sub dist_target {
    my($self) = shift;

    my $date_check = $self->oneliner(<<'CODE', ['-l']);
print 'Warning: Makefile possibly out of date with $(VERSION_FROM)'
    if -e '$(VERSION_FROM)' and -M '$(VERSION_FROM)' < -M '$(FIRST_MAKEFILE)';
CODE

    return sprintf <<'MAKE_FRAG', $date_check;
dist : $(DIST_DEFAULT) $(FIRST_MAKEFILE)
	$(NOECHO) %s
MAKE_FRAG
}

=item B<tardist_target>

  my $make_frag = $MM->tardist_target;

Returns the 'tardist' target which is simply so 'make tardist' works.
The real work is done by the dynamically named tardistfile_target()
method, tardist should have that as a dependency.

=cut

sub tardist_target {
    my($self) = shift;

    return <<'MAKE_FRAG';
tardist : $(DISTVNAME).tar$(SUFFIX)
	$(NOECHO) $(NOOP)
MAKE_FRAG
}

=item B<zipdist_target>

  my $make_frag = $MM->zipdist_target;

Returns the 'zipdist' target which is simply so 'make zipdist' works.
The real work is done by the dynamically named zipdistfile_target()
method, zipdist should have that as a dependency.

=cut

sub zipdist_target {
    my($self) = shift;

    return <<'MAKE_FRAG';
zipdist : $(DISTVNAME).zip
	$(NOECHO) $(NOOP)
MAKE_FRAG
}

=item B<tarfile_target>

  my $make_frag = $MM->tarfile_target;

The name of this target is the name of the tarball generated by
tardist.  This target does the actual work of turning the distdir into
a tarball.

=cut

sub tarfile_target {
    my($self) = shift;

    return <<'MAKE_FRAG';
$(DISTVNAME).tar$(SUFFIX) : distdir
	$(PREOP)
	$(TO_UNIX)
	$(TAR) $(TARFLAGS) $(DISTVNAME).tar $(DISTVNAME)
	$(RM_RF) $(DISTVNAME)
	$(COMPRESS) $(DISTVNAME).tar
	$(POSTOP)
MAKE_FRAG
}

=item zipfile_target

  my $make_frag = $MM->zipfile_target;

The name of this target is the name of the zip file generated by
zipdist.  This target does the actual work of turning the distdir into
a zip file.

=cut

sub zipfile_target {
    my($self) = shift;

    return <<'MAKE_FRAG';
$(DISTVNAME).zip : distdir
	$(PREOP)
	$(ZIP) $(ZIPFLAGS) $(DISTVNAME).zip $(DISTVNAME)
	$(RM_RF) $(DISTVNAME)
	$(POSTOP)
MAKE_FRAG
}

=item uutardist_target

  my $make_frag = $MM->uutardist_target;

Converts the tarfile into a uuencoded file

=cut

sub uutardist_target {
    my($self) = shift;

    return <<'MAKE_FRAG';
uutardist : $(DISTVNAME).tar$(SUFFIX)
	uuencode $(DISTVNAME).tar$(SUFFIX) $(DISTVNAME).tar$(SUFFIX) > $(DISTVNAME).tar$(SUFFIX)_uu
MAKE_FRAG
}


=item shdist_target

  my $make_frag = $MM->shdist_target;

Converts the distdir into a shell archive.

=cut

sub shdist_target {
    my($self) = shift;

    return <<'MAKE_FRAG';
shdist : distdir
	$(PREOP)
	$(SHAR) $(DISTVNAME) > $(DISTVNAME).shar
	$(RM_RF) $(DISTVNAME)
	$(POSTOP)
MAKE_FRAG
}


=item dlsyms (o)

Used by some OS' to define DL_FUNCS and DL_VARS and write the *.exp files.

Normally just returns an empty string.

=cut

sub dlsyms {
    return '';
}


=item dynamic_bs (o)

Defines targets for bootstrap files.

=cut

sub dynamic_bs {
    my($self, %attribs) = @_;
    return '
BOOTSTRAP =
' unless $self->has_link_code();

    my $target = $Is_VMS ? '$(MMS$TARGET)' : '$@';

    return sprintf <<'MAKE_FRAG', ($target) x 5;
BOOTSTRAP = $(BASEEXT).bs

# As Mkbootstrap might not write a file (if none is required)
# we use touch to prevent make continually trying to remake it.
# The DynaLoader only reads a non-empty file.
$(BOOTSTRAP) : $(FIRST_MAKEFILE) $(BOOTDEP) $(INST_ARCHAUTODIR)$(DFSEP).exists
	$(NOECHO) $(ECHO) "Running Mkbootstrap for $(NAME) ($(BSLOADLIBS))"
	$(NOECHO) $(PERLRUN) \
		"-MExtUtils::Mkbootstrap" \
		-e "Mkbootstrap('$(BASEEXT)','$(BSLOADLIBS)');"
	$(NOECHO) $(TOUCH) %s
	$(CHMOD) $(PERM_RW) %s

$(INST_BOOT) : $(BOOTSTRAP) $(INST_ARCHAUTODIR)$(DFSEP).exists
	$(NOECHO) $(RM_RF) %s
	- $(CP) $(BOOTSTRAP) %s
	$(CHMOD) $(PERM_RW) %s
MAKE_FRAG
}

=item dynamic_lib (o)

Defines how to produce the *.so (or equivalent) files.

=cut

sub dynamic_lib {
    my($self, %attribs) = @_;
    return '' unless $self->needs_linking(); #might be because of a subdir

    return '' unless $self->has_link_code;

    my($otherldflags) = $attribs{OTHERLDFLAGS} || "";
    my($inst_dynamic_dep) = $attribs{INST_DYNAMIC_DEP} || "";
    my($armaybe) = $attribs{ARMAYBE} || $self->{ARMAYBE} || ":";
    my($ldfrom) = '$(LDFROM)';
    $armaybe = 'ar' if ($Is_OSF and $armaybe eq ':');
    my(@m);
    my $ld_opt = $Is_OS2 ? '$(OPTIMIZE) ' : '';	# Useful on other systems too?
    my $ld_fix = $Is_OS2 ? '|| ( $(RM_F) $@ && sh -c false )' : '';
    push(@m,'
# This section creates the dynamically loadable $(INST_DYNAMIC)
# from $(OBJECT) and possibly $(MYEXTLIB).
ARMAYBE = '.$armaybe.'
OTHERLDFLAGS = '.$ld_opt.$otherldflags.'
INST_DYNAMIC_DEP = '.$inst_dynamic_dep.'
INST_DYNAMIC_FIX = '.$ld_fix.'

$(INST_DYNAMIC): $(OBJECT) $(MYEXTLIB) $(BOOTSTRAP) $(INST_ARCHAUTODIR)$(DFSEP).exists $(EXPORT_LIST) $(PERL_ARCHIVE) $(PERL_ARCHIVE_AFTER) $(INST_DYNAMIC_DEP)
');
    if ($armaybe ne ':'){
	$ldfrom = 'tmp$(LIB_EXT)';
	push(@m,'	$(ARMAYBE) cr '.$ldfrom.' $(OBJECT)'."\n");
	push(@m,'	$(RANLIB) '."$ldfrom\n");
    }
    $ldfrom = "-all $ldfrom -none" if $Is_OSF;

    # The IRIX linker doesn't use LD_RUN_PATH
    my $ldrun = $Is_IRIX && $self->{LD_RUN_PATH} ?         
                       qq{-rpath "$self->{LD_RUN_PATH}"} : '';

    # For example in AIX the shared objects/libraries from previous builds
    # linger quite a while in the shared dynalinker cache even when nobody
    # is using them.  This is painful if one for instance tries to restart
    # a failed build because the link command will fail unnecessarily 'cos
    # the shared object/library is 'busy'.
    push(@m,'	$(RM_F) $@
');

    my $libs = '$(LDLOADLIBS)';

    if (($Is_NetBSD || $Is_Interix) && $Config{'useshrplib'} eq 'true') {
	# Use nothing on static perl platforms, and to the flags needed
	# to link against the shared libperl library on shared perl
	# platforms.  We peek at lddlflags to see if we need -Wl,-R
	# or -R to add paths to the run-time library search path.
        if ($Config{'lddlflags'} =~ /-Wl,-R/) {
            $libs .= ' -L$(PERL_INC) -Wl,-R$(INSTALLARCHLIB)/CORE -Wl,-R$(PERL_ARCHLIB)/CORE -lperl';
        } elsif ($Config{'lddlflags'} =~ /-R/) {
            $libs .= ' -L$(PERL_INC) -R$(INSTALLARCHLIB)/CORE -R$(PERL_ARCHLIB)/CORE -lperl';
        }
    }

    my $ld_run_path_shell = "";
    if ($self->{LD_RUN_PATH} ne "") {
	$ld_run_path_shell = 'LD_RUN_PATH="$(LD_RUN_PATH)" ';
    }

    push @m, sprintf <<'MAKE', $ld_run_path_shell, $ldrun, $ldfrom, $libs;
	%s$(LD) %s $(LDDLFLAGS) %s $(OTHERLDFLAGS) -o $@ $(MYEXTLIB)	\
	  $(PERL_ARCHIVE) %s $(PERL_ARCHIVE_AFTER) $(EXPORT_LIST)	\
	  $(INST_DYNAMIC_FIX)
MAKE

    push @m, <<'MAKE';
	$(CHMOD) $(PERM_RWX) $@
MAKE

    return join('',@m);
}

=item exescan