sci-libs/calculix-ccx
A Free Software Three-Dimensional Structural Finite Element Program
USE Flags
doc
Global: Adds extra documentation (API, Javadoc, etc)
examples
Global: Install examples, usually source code
openmp
Global: Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
threads
Global: Adds threads support for various packages. Usually pthreads