Carbonica Amp

On Ubuntu Karmic Koala (9.10), when trying to install the gem, you get:
############################################### Building native extensions. This could take a while...
ERROR: Error installing amp:

ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb checking for BZ2_bzWriteOpen() in -lbz2... no
extconf.rb failed Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.

Provided configuration options:

--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/bin/ruby1.8
--enable-unknown
--disable-unknown
--with-bz2-dir
--without-bz2-dir
--with-bz2-include
--without-bz2-include=${bz2-dir}/include
--with-bz2-lib
--without-bz2-lib=${bz2-dir}/lib
--with-bz2lib
--without-bz2lib

extconf.rb:22: libz2 not found (RuntimeError)
############################################### The package actually required is libbz2-dev. Installing this via apt and re-running the gem install will fix the issue. I think the gem dependencies need to be updated to fix this.

Thanks.