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Changelog

Source: NEWS.md

Uno 2.7.4

  • Fixed the interior-point (“ipopt”) preset on Windows, which failed with “The linear solver MUMPS is unknown”. The shim now resolves rmumps’ dmumps_c via R_GetCCallable (works on Windows) instead of R_FindSymbol (did not), and configure.win builds with MUMPS enabled. Requires rmumps >= 5.2.1-43.

  • Updated the bundled Uno C++ solver to upstream release 2.7.4. The R-packaging patch set rebased cleanly; the C API is backward-compatible and the R binding is unchanged.

  • Build: forward the HiGHS include root into the bundled Uno compile, fixing a “‘highs/Highs.h’ file not found” error from Uno 2.7.4’s prefixed include.

  • Keep the bundled HiGHS/Uno source trees out of the installed package via a top-level .Rinstignore, as CRAN requested; the static libraries are still built from the bundled sources at configure time.

  • Fixed an undefined-behavior report from CRAN’s gcc-SAN / clang-SAN checks (uno_binding.cpp, make_x): a length-0 memcpy received a NULL source. The copy is now guarded; no user-visible behavior change.

Uno 2.7.3-1

CRAN release: 2026-06-11

  • Fixed the bundled HiGHS/Uno source build on non-shlib R (CRAN fedora-gcc/clang, musl): use R.home("include") for R’s header path, and normalize a lib64/ libuno.a install to lib/.

Uno 2.7.3

CRAN release: 2026-06-08

  • Updated the bundled Uno C++ solver to upstream release 2.7.3. The R-packaging patch set was rebased onto v2.7.3; the C API is backward-compatible (the binding is unchanged). One internal fix: Uno 2.7.3 relocated Options::dump_default_options(), so its console output is re-routed through the R-output mechanism (UNO_COUT) to keep the compiled library free of raw std::cout for the CRAN compiled-code check.

  • Added inst/COPYRIGHTS documenting the copyright holders and licenses of the bundled third-party libraries: the Uno C++ solver and HiGHS, including the components HiGHS itself bundles (AMD, METIS, pdqsort, zstr, rcm, filereaderlp, Catch2, and CLI11). All are permissive and MIT-compatible (MIT / BSD-3-Clause / Apache-2.0 / zlib / Boost Software License 1.0); none is copyleft. A Copyright: file inst/COPYRIGHTS field and a cph entry for the HiGHS development team record this in the package metadata. Because the file lives under inst/, the attribution survives installation. MUMPS (reached at run time through the GPL-licensed rmumps package) and BQPD are not bundled.