CMake should require GTK >=3.8

I know that it's probably early days, but I thought I'd give the online-accounts plug a go. I've been receiving the following error message(s) when running make (cmake seems to run just fine now that I've built and installed all of the dependencies).

ch2lah@lees-vaio:~/.branches/pantheon/switchboard/online-accounts/build$ make
[ 5%] messages.”
[ 5%] Built target i18n
Linking C executable online-accounts-pantheon
CMakeFiles/online-accounts-pantheon.dir/Views/SourceSelector.c.o: In function `online_accounts_source_selector_construct':
SourceSelector.c:(.text+0x6a6): undefined reference to `gtk_tree_view_set_activate_on_single_click'
CMakeFiles/online-accounts-pantheon.dir/Views/AccountPopOver.c.o: In function `online_accounts_account_pop_over_construct':
AccountPopOver.c:(.text+0x4e9): undefined reference to `gtk_tree_view_set_activate_on_single_click'
collect2: error: ld returned 1 exit status
make[2]: *** [src/online-accounts-pantheon] Error 1
make[1]: *** [src/CMakeFiles/online-accounts-pantheon.dir/all] Error 2
make: *** [all] Error 2

Any idea what this error means? Whether it is surmountable or a bug, etc? I have to confess, I've no idea how to read the above output.

Regards,

Lee Hyde.

FYI: I'm running Ubuntu Raring x86-64 with up-to-date elementary/pantheon installed via the stable, testing AND daily PPAs.