There are a set a pre-built packages for libopenraw if it is not in your distribution.
SuSE
Packages for various SUSE versions (i386 and x86_64) are available in the openSUSE build service.
Ubuntu
Package for Ubuntu Feisty and Ubuntu Gutsy (i386 and amd64 only) are in the PPA. See https://launchpad.net/%7Ehub/+archive for the source to add to apt.