Have you tried the latest nightly build. It should include the plugin by default...
It's an external resource and can be downloaded via svn, but it is not included in the build-system as far as I know.
And the linux projectfile only works with C::B build with C::B, otherwise some paths for the search directories are invalid (e.g. devel).
And it is not buildable with recent C::B, because it does not use Manager::IsAppShuttingDown, but the no longer existing non camel-case version (the last one is easy to fix, obviously).
To make the projectfile usable with the devel-packages on debian/ubuntu and Fedora, RedHat/CentOS, you need to remove all entries in the search-directories tabs, remove the linklibrary (which should be just
codeblocks not
libcodeblocks.a on linux, by the way) and add
`pkg-config codeblocks --cflags` to "Compiler settings -> Other options" and
`pkg-config codeblocks --libs` to "Linker settings -> Other linker options".
Thne change all calls to
Manager::isappShuttingDown to
Manager::IsAppShuttingDown.