Ruby Memcached Gem on Ubuntu

Got the following error while installing memcached gem:

...
creating Makefile

make
gcc -I. -I/usr/lib/ruby/1.8/x86_64-linux -I/usr/lib/ruby/1.8/x86_64-linux -I.  -fPIC  -I/home/gretch/.bundler/tmp/27543/gems/memcached-northscale-0.19.5.4/ext/include  -L/home/gretch/.bundler/tmp/27543/gems/memcached-northscale-0.19.5.4/ext/lib -fno-strict-aliasing -g -g -O2  -fPIC   -fno-strict-aliasing -g -g -O2  -fPIC   -c rlibmemcached_wrap.c
rlibmemcached_wrap.c: In function ‘_wrap_MemcachedSt_sasl_callbacks_set’:
rlibmemcached_wrap.c:6669: error: ‘sasl_callback_t’ undeclared (first use in this function)
rlibmemcached_wrap.c:6669: error: (Each undeclared identifier is reported only once
rlibmemcached_wrap.c:6669: error: for each function it appears in.)
rlibmemcached_wrap.c:6669: error: ‘arg2’ undeclared (first use in this function)
rlibmemcached_wrap.c:6669: error: expected expression before ‘)’ token
rlibmemcached_wrap.c:6687: error: expected expression before ‘)’ token
rlibmemcached_wrap.c:6688: error: ‘struct memcached_st’ has no member named ‘sasl_callbacks’
rlibmemcached_wrap.c:6688: error: expected ‘)’ before ‘const’
rlibmemcached_wrap.c:6688: error: expected ‘;’ before ‘arg2’
rlibmemcached_wrap.c: In function ‘_wrap_MemcachedSt_sasl_callbacks_get’:
rlibmemcached_wrap.c:6700: error: ‘sasl_callback_t’ undeclared (first use in this function)
rlibmemcached_wrap.c:6700: error: ‘result’ undeclared (first use in this function)
rlibmemcached_wrap.c:6711: error: expected expression before ‘)’ token
rlibmemcached_wrap.c:6711: error: ‘struct memcached_st’ has no member named ‘sasl_callbacks’
rlibmemcached_wrap.c: In function ‘_wrap_memcached_set_sasl_callbacks’:
rlibmemcached_wrap.c:12021: error: ‘sasl_callback_t’ undeclared (first use in this function)
rlibmemcached_wrap.c:12021: error: ‘arg2’ undeclared (first use in this function)
rlibmemcached_wrap.c:12021: error: expected expression before ‘)’ token
rlibmemcached_wrap.c:12039: error: expected expression before ‘)’ token
rlibmemcached_wrap.c:12040: error: expected ‘)’ before ‘const’
rlibmemcached_wrap.c:12040: error: expected ‘)’ before ‘arg2’
rlibmemcached_wrap.c: In function ‘_wrap_memcached_get_sasl_callbacks’:
rlibmemcached_wrap.c:12122: error: ‘sasl_callback_t’ undeclared (first use in this function)
rlibmemcached_wrap.c:12122: error: ‘result’ undeclared (first use in this function)
rlibmemcached_wrap.c:12133: error: expected expression before ‘)’ token
rlibmemcached_wrap.c: In function ‘Init_rlibmemcached’:
rlibmemcached_wrap.c:13285: error: ‘SASL_OK’ undeclared (first use in this function)
make: *** [rlibmemcached_wrap.o] Error 1


Gem files will remain installed in /home/gretch/.bundler/tmp/27543/gems/memcached-northscale-0.19.5.4 for inspection.
Results logged to /home/gretch/.bundler/tmp/27543/gems/memcached-northscale-0.19.5.4/ext/gem_make.out
from /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:446:in `each'
from /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:446:in `build_extensions'
from /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:198:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/source.rb:95:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/installer.rb:55:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/spec_set.rb:12:in `each'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/spec_set.rb:12:in `each'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/installer.rb:44:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/installer.rb:8:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/cli.rb:225:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/vendor/thor/task.rb:22:in `send'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/vendor/thor/task.rb:22:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/vendor/thor.rb:246:in `dispatch'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/lib/bundler/vendor/thor/base.rb:389:in `start'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.9/bin/bundle:13
from /usr/bin/bundle:19:in `load'
from /usr/bin/bundle:19

This can be solved by installing:

$ sudo aptitude install libmemcached-dev libsasl2-dev libmemcached-dbg