sudo port install digikam
Password:
--->  Computing dependencies for digikam
--->  Dependencies to be installed: kde4-baseapps kde4-runtime kdepimlibs4 libical prison libdmtx qrencode libssh openslp oxygen-icons qimageblitz samba3 tidy lensfun libgphoto2 gd2 xpm libexif libgpod libplist py27-mutagen swig-python swig libkdcraw libraw libkexiv2 libkipi libksane sane-backends net-snmp liblqr libpgf doxygen graphviz libLASi xorg-libXaw groff netpbm psutils marble gpsd scons libkdeedu
--->  Building libical
Error: org.macports.build for port libical returned: command execution failed
Error: Failed to install libical
Please see the log file for port libical for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libical/libical/main.log
Error: The following dependencies were not installed: kde4-baseapps kde4-runtime kdepimlibs4 libical prison libdmtx qrencode libssh openslp oxygen-icons qimageblitz samba3 tidy lensfun libgphoto2 gd2 xpm libexif libgpod libplist py27-mutagen swig-python swig libkdcraw libraw libkexiv2 libkipi libksane sane-backends net-snmp liblqr libpgf doxygen graphviz libLASi xorg-libXaw groff netpbm psutils marble gpsd scons libkdeedu
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port digikam failed