dpkg dpkg fail

--->  Creating dpkg for dpkg-1.16.10
DEBUG: {bzip2 (>= 1.0.6)} {coreutils (>= 8.21)} {debianutils (>= 4.3.4)} {expat (>= 2.1.0)} {gdbm (>= 1.10)} {gettext (>= 0.18.2.1)} {gmp (>= 5.0.5)} {gnutar (>= 1.26)} {libiconv (>= 1.14)} {ncurses (>= 5.9)} {perl5.12 (>= 5.12.4)} {perl5 (>= 5.12.4)} {xz (>= 5.0.4)} {zlib (>= 1.2.8)}
dpkg-deb: warning: parsing file '/opt/local/var/macports/build/_opt_local_var_macports_sources_LocalPorts_sysutils_dpkg/dpkg/work/destroot/DEBIAN/control' near line 2 package 'dpkg':
 'darwin-x86_64' is not a valid architecture name: character `_' not allowed (only letters, digits and characters `-')
dpkg-deb: warning: ignoring 1 warning about the control file(s)

dpkg-deb: building package `dpkg' in `/opt/local/var/macports/build/_opt_local_var_macports_sources_LocalPorts_sysutils_dpkg/dpkg/work/dpkg_1.16.10_darwin-x86_64.deb'.
Can't use format gnu: No such format 'gnu'
Usage:
  List:    tar -tf <archive-filename>
  Extract: tar -xf <archive-filename>
  Create:  tar -cf <archive-filename> [filenames...]
  Help:    tar --help
dpkg-deb: error: subprocess tar -cf returned error exit status 1
Command failed: dpkg-deb -b "/opt/local/var/macports/build/_opt_local_var_macports_sources_LocalPorts_sysutils_dpkg/dpkg/work/destroot" "/opt/local/var/macports/build/_opt_local_var_macports_sources_LocalPorts_sysutils_dpkg/dpkg/work"
Exit code: 2
Error: org.macports.dpkg for port dpkg returned: command execution failed
DEBUG: Error code: CHILDSTATUS 84021 2
DEBUG: Backtrace: command execution failed
    while executing
"system "dpkg-deb -b \"${destpath}\" \"[option package.destpath]\"""
    (procedure "portdpkg::main" line 115)
    invoked from within
"$procedure $targetname"
Warning: targets not executed for dpkg: org.macports.dpkg
Please see the log file for port dpkg for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_LocalPorts_sysutils_dpkg/dpkg/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port dpkg failed