erro do maildrop, nao compila

["Murilo Bernardes" <murilo.listas@gmail.com>]

eu estou tentando dar um apt-get build-dep maildrop e nao rola. dai
tentei pegar na mao mesmo, tudo bem, instala... mas quando dou o
seguyinte comando dá esse erro, alguem tem ajuda??

cetene:~/maildrop/maildrop-1.5.3# dpkg-buildpackage -rfakeroot -uc -b
dpkg-buildpackage: source package is maildrop
dpkg-buildpackage: source version is 1.5.3-1.1sarge1
dpkg-buildpackage: source maintainer is Martin Schulze <joey@infodrom.org>
dpkg-buildpackage: host architecture is i386
dpkg-checkbuilddeps: Unmet build dependencies: debhelper (>= 2) libgdbm-dev
dpkg-buildpackage: Build dependencies/conflicts unsatisfied; aborting.
dpkg-buildpackage: (Use -d flag to override.)