can't install kcachegrind because kdelibs3 won't install

[Giovanni Azua]

Hello,

Thank you for your answers. I installed kdesdk4 apparently correctly but it crashes while trying to run kcachegrind:

/var/root$ /Applications/MacPorts/KDE4/kcachegrind.app/Contents/MacOS/kcachegrind
QIODevice::setTextModeEnabled: The device is not open
kcachegrind(40818)/KSharedDataCache ensureFileAllocated: This system misses support for posix_fallocate() -- ensure this partition has room for at least 10547296 bytes. 
Dynamic session lookup supported but failed: launchd did not provide a socket path, verify that org.freedesktop.dbus-session.plist is loaded!
kcachegrind(40818)/kdeui (kdelibs): Session bus not found 
To circumvent this problem try the following command (with Linux and bash) 
export $(dbus-launch) 
KCrash: Application 'kcachegrind' crashing...
KCrash: Attempting to start /opt/local/lib/kde4/libexec/drkonqi.app/Contents/MacOS/drkonqi from kdeinit
sock_file=/var/root/Library/Preferences/KDE/socket-Macintosh-4.local/kdeinit4__0
Warning: connect() failed: : No such file or directory
KCrash: Attempting to start /opt/local/lib/kde4/libexec/drkonqi.app/Contents/MacOS/drkonqi directly
QIODevice::setTextModeEnabled: The device is not open
QProcess: Destroyed while process is still running.
drkonqi(40828)/KSharedDataCache ensureFileAllocated: This system misses support for posix_fallocate() -- ensure this partition has room for at least 10547296 bytes. 
Dynamic session lookup supported but failed: launchd did not provide a socket path, verify that org.freedesktop.dbus-session.plist is loaded!
drkonqi(40828)/kdeui (kdelibs): Session bus not found 
To circumvent this problem try the following command (with Linux and bash) 
export $(dbus-launch)  

What do I do now? 

TIA,
Best regards,
Giovanni