Emerge is a package manager typically found on Gentoo. Use it to install missing programs and required libraries.
Searching for packages
>emerge --search string
Installing a package
>emerge --search rpm Searching... [ Results for search key : rpm ] [ Applications found : 4 ] * app-arch/deltarpm [ Masked ] Latest version available: 3.3 Latest version installed: [ Not Installed ] Size of downloaded files: 460 kB Homepage: ftp://ftp.suse.com/pub/projects/deltarpm/ Description: tools to create and apply deltarpms License: BSD * app-arch/rpm Latest version available: 4.2-r1 Latest version installed: 4.2-r1 Size of downloaded files: 28,541 kB Homepage: http://www.rpm.org/ Description: Red Hat Package Management Utils License: GPL-2 LGPL-2 * app-arch/rpm2targz Latest version available: 9.0-r3 Latest version installed: 9.0-r3 Size of downloaded files: 7 kB Homepage: http://www.slackware.com/config/packages.php Description: Convert a .rpm file to a .tar.gz archive License: as-is * dev-perl/RPM Latest version available: 0.40-r1 Latest version installed: [ Not Installed ] Size of downloaded files: 53 kB Homepage: http://search.cpan.org/author/RJRAY/Perl-RPM-0.40/ Description: RPM:: module for perl License: || ( Artistic GPL-2 )