cholmod

USE flags

• abi_mips_n32 - 64-bit (32-bit pointer) libraries
• abi_mips_n64 - 64-bit libraries
• abi_mips_o32 - 32-bit libraries
• abi_s390_32 - 32-bit (s390) libraries
• abi_s390_64 - 64-bit (s390x) libraries
• abi_x86_32 - 32-bit (x86) libraries
• abi_x86_64 - 64-bit (amd64) libraries
• abi_x86_x32 - x32 ABI libraries
• cholesky - Enable sparse Cholesky factorisation
• cuda - Use nvidia cuda toolkit for speeding up computations
• doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
• lapack - Add support for the virtual/lapack numerical library
• matrixops - Support basic sparse and dense matrix operations (add, multiply, scale, et cetera)
• modify - Enable Cholesky-modification routines like update, downdate, row-add, and row-delete
• openmp - Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
• partition - Enable graph partitioning and graph-partition-based orderings through sci-libs/metis (using a bundled fork in 4.0.0+) or sci-libs/parmetis
• supernodal - supernodal cholesky factorisation
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)