libreoffice

LibreOffice 5.2.4.2 needs redland >=1.0.16, which provides librdf. Certainly you have installed 1.0.17 as a package. However the build system complains as: "librdf too old Need >=1.0.16" So, what?

When you experience problems building libxml2 or any other ports depending on it (e.g. libreoffice), see the error message of the compiler. If it contains undefined reference 'lzma_auto_compress', then simply remove lzma and lzmalib packages from the system and continue the build process.

Reason: The base system contains lzma library, and the uncompatible package version supresses if installed.