$ su - master
Password:

master$ sw_vers 
ProductName:	Mac OS X
ProductVersion:	10.8.2
BuildVersion:	12C3012

master$ port -v      
MacPorts 2.1.3
Entering interactive mode... ("help" for help, "quit" to quit)
[Users/master] > ^D
Goodbye

master$ sudo port clean dia
Password:
--->  Cleaning dia

master$ sudo port install dia
--->  Computing dependencies for dia
--->  Fetching archive for dia
--->  Attempting to fetch dia-0.97.2_3.darwin_12.x86_64.tbz2 from http://lil.fr.packages.macports.org/dia
--->  Attempting to fetch dia-0.97.2_3.darwin_12.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/dia
--->  Attempting to fetch dia-0.97.2_3.darwin_12.x86_64.tbz2 from http://packages.macports.org/dia
--->  Fetching distfiles for dia
--->  Attempting to fetch dia-0.97.2.tar.xz from http://lil.fr.distfiles.macports.org/dia
--->  Verifying checksum(s) for dia
--->  Extracting dia
--->  Applying patches to dia
--->  Configuring dia
--->  Building dia
Error: org.macports.build for port dia returned: command execution failed
Please see the log file for port dia for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gnome_dia/dia/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port dia failed


master$ tail -40 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gnome_dia/dia/main.log
:info:build ^
:info:build http://docbook.sourceforge.net/release/xsl/current/html/biblio.xsl:1: parser error : Start tag expected, '<' not found
:info:build 
:info:build ^
:info:build compilation error: file http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl line 62 element include
:info:build xsl:include : unable to load http://docbook.sourceforge.net/release/xsl/current/html/biblio.xsl
:info:build http://docbook.sourceforge.net/release/xsl/current/manpages/lists.xsl:1: parser error : Document is empty
:info:build 
:info:build ^
:info:build http://docbook.sourceforge.net/release/xsl/current/manpages/lists.xsl:1: parser error : Start tag expected, '<' not found
:info:build 
:info:build ^
:info:build compilation error: file http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl line 38 element include
:info:build xsl:include : unable to load http://docbook.sourceforge.net/release/xsl/current/manpages/lists.xsl
:info:build make[3]: *** [dia.1] Error 5
:info:build make[3]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gnome_dia/dia/work/dia-0.97.2/doc/en'
:info:build make[2]: *** [all-recursive] Error 1
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gnome_dia/dia/work/dia-0.97.2/doc'
:info:build make[1]: *** [all-recursive] Error 1
:info:build make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gnome_dia/dia/work/dia-0.97.2'
:info:build make: *** [all] Error 2
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gnome_dia/dia/work/dia-0.97.2'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gnome_dia/dia/work/dia-0.97.2" && /usr/bin/make -j4 -w all 
:info:build Exit code: 2
:error:build org.macports.build for port dia returned: command execution failed
:debug:build Error code: CHILDSTATUS 8285 2
:debug:build Backtrace: command execution failed
    while executing
"system -nice 0 $fullcmdstring"
    ("eval" body line 1)
    invoked from within
"eval system $notty $nice \$fullcmdstring"
    invoked from within
"command_exec build"
    (procedure "portbuild::build_main" line 8)
    invoked from within
"$procedure $targetname"
:info:build Warning: targets not executed for dia: org.macports.activate org.macports.build org.macports.destroot org.macports.install
:notice:build Please see the log file for port dia for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gnome_dia/dia/main.log
master$