Only boost include files are used, dynamic libraries are not linked against.
Not sure if also the compiled plugins don't need boost at runtime :/
Only the following boost includes are used: boost/algorithm/string.hpp boost/bind.hpp boost/enable_shared_from_this.hpp boost/format.hpp boost/function.hpp boost/lexical_cast.hpp boost/lexical_cast.hpp boost/noncopyable.hpp boost/shared_array.hpp boost/shared_ptr.hpp None of them has a library component. I also didn't find any linkage against boost in the makefiles. "grep libboost `qlist -e abiword`" returns nothing, although I don't have all possible plugins enabled.
For example in old version, collab plugin needed it at runtime too
+ 09 Feb 2014; Pacho Ramos <pacho@gentoo.org> + +files/abiword-3.0.0-libgcrypt_1_6_0-1.patch, abiword-3.0.0-r1.ebuild: + Fix build with libcrypt-1.6 (#495176 by Anton Kochkov) and boost dependency + (#493786 by Maxim Kammerer) +