Rust Linear Solver Toolbox

The Rust Linear Solver toolbox is an in-development project for dense and sparse linear algebra routines in Rust.

LICENSE

This work is dual-licensed under the Apache 2.0 and MIT license. You can choose between one of them if you use this work.

SPDX-License-Identifier: (Apache-2.0 OR MIT)

Some optional dependencies of the library have different licenses that may change the license of compiled library components.

Note that when linking against FFTW (either by the flag fftw_system or the flag fftw_source) the GPL license of FFTW needs to be adhered to.

System FFTW

Enable fftw,fftw_system to use an installed FFTW library. Both double- and single-precision libraries (fftw3 and fftw3f) are required.

• macOS (Homebrew): brew install fftw pkg-config
• Debian/Ubuntu: sudo apt install libfftw3-dev pkg-config
• Fedora: sudo dnf install fftw-devel pkgconf-pkg-config

The build uses pkg-config to discover library paths, with a fallback to standard native Homebrew FFTW locations on macOS. For custom installations, set PKG_CONFIG_PATH to the directory containing fftw3.pc and fftw3f.pc. Cross-compilation requires target libraries and the corresponding pkg-config configuration; host Homebrew paths are not used as a fallback. This discovery does not affect the fftw_source or fftw_mkl backends.

Notes

This library is the result of the merger of two experimental linear algebra projects

• Householder (github.com/UCL-ARC/householder)
• sandbox (github.com/linalg-rs/sandbox)

Both projects are MIT + Apache-2.0 dual licensed. The Rust Linear Solver toolbox is the successor of both projects.