sundials

USE flags

• cxx - Build support for C++ (bindings, extra libraries, code generation, ...)
• doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
• examples - Install examples, usually source code
• fortran - Add support for fortran
• hypre - Build with sci-libs/hypre conditioners
• int64 - Use index size of 64 rather than 32 bits
• lapack - Add support for the virtual/lapack numerical library
• mpi - Add MPI (Message Passing Interface) layer to the apps that support it
• openmp - Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
• sparse - Enable support for sci-libs/klu sparse solver
• static-libs - Build static versions of dynamic libraries as well
• superlumt - Build with sci-libs/superlu_mt
• threads - Add threads support for various packages. Usually pthreads