A heavily patched libical was originally included as
part
of the kdepim
source code. For the Trinity project this was split
into an external
dependency, as other programs also use libical and there
was no more need
for the KDE-specific patches to the upstream code.
This is a dependency
that will need to be filled even for basic functionality.
libcaldav and libcarddav are for the new CalDAV and CardDAV
resources, for
korganizer and kaddressbook respectively. You can
disable them, but you
will lose interoperability with newer PIM suites such as
Google Calendar
and Zimbra.
So libical is required and is a replacement for libkcal?
What about libcaldav? libcarddav? Are there configure options to disable the latter two?
I checked configure --help and saw nothing obvious for all three. :(
I don't see the links for the libcaldav and libcarddav sources. I saw links to deb
packages.
Note: Just about everything I select at your quickbuild site uses an "invalid
certificate." I hate this so-called feature of Firefox. I know how to add exceptions,
but would be nice if folks did not have to do that. :)