mumble: fails to compile with "shell command failed"

[Damien@…]

Default variants are : +ipv6 +quartz +no_x11 -x11 +nls +tls +ssl +with_default_names +ares +idn +aqua +bash_completion +adns +aspell


# port -d install mumble +dbus
...
DEBUG: Executing org.macports.configure (mumble)                                                        
DEBUG: Environment: CPATH='/opt/local/include' CFLAGS='-pipe -O2 -arch x86_64' CPPFLAGS='-I/opt/local/in
clude' CXXFLAGS='-pipe -O2 -arch x86_64' LIBRARY_PATH='/opt/local/lib' MACOSX_DEPLOYMENT_TARGET='10.6' C
XX='/usr/bin/g++-4.2' CC_PRINT_OPTIONS_FILE='/opt/local/var/macports/build/_opt_local_var_macports_sourc
es_rsync.macports.org_release_ports_aqua_mumble/work/.CC_PRINT_OPTIONS' F90FLAGS='-pipe -O2 -m64' LDFLAG
S='-L/opt/local/lib -arch x86_64' FCFLAGS='-pipe -O2 -m64' OBJC='/usr/bin/gcc-4.2' INSTALL='/usr/bin/ins
tall -c' QMAKESPEC='/opt/local/libexec/qt4-mac/mkspecs/macx-g++' OBJCFLAGS='-pipe -O2 -arch x86_64' FFLA
GS='-pipe -O2 -m64' CC_PRINT_OPTIONS='YES' CC='/usr/bin/gcc-4.2'                                        
DEBUG: Assembled command: 'cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macpo
rts.org_release_ports_aqua_mumble/work/mumble-1.2.1" && /opt/local/bin/qmake-mac CONFIG+=" release no-un
iversal no-server " DEFINES+=NO_UPDATE_CHECK main.pro'                                                  
--->  Building mumble                                                                                   
DEBUG: build phase started at Thu Jun 24 10:44:33 CEST 2010                                             
DEBUG: Executing proc-pre-org.macports.build-build-0                                                    
sed: impossible de lire : No such file or directory                                                     
shell command "sed -i '' -e 's,a.setLibraryPaths(QStringList());,a.setLibraryPaths(QStringList("/opt/loc
al/libexec/qt4-mac/plugins"));,' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.mac
ports.org_release_ports_aqua_mumble/work/mumble-1.2.1/src/mumble/main.cpp" returned error 2             
Error: Target org.macports.build returned: shell command failed                                         
DEBUG: Backtrace: shell command failed                                                                  
    while executing                                                                                     
"$pre $targetname"                                                                                      
Warning: the following items did not execute (for mumble): org.macports.activate org.macports.build org.
macports.destroot org.macports.archive org.macports.install                                             
Log for mumble is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_re
lease_ports_aqua_mumble/main.log                                                                        
Error: Status 1 encountered during processing.
To report a bug, see <http://guide.macports.org/#project.tickets>