ENH: Update OpenBLAS to v0.3.34 and add LAPACK - #2902
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Fold the optimized LAPACK sources into libopenblas, gated on build_without_lapack and no_lapack. Use dependency_names plus override_dependency, add a project license, and ignore upstream Meson files from later OpenBLAS trees. Debian CI needs libtinfo6.
Use an explicit Meson fc.get_id() to F_INTERFACE_* table matching OpenBLAS 0.3.34 cmake/fc.cmake. LLVM Flang and unknown compilers fall back to F_INTERFACE_GFORT instead of inventing F_INTERFACE_FLANG or F_INTERFACE_INTEL-LLVM.
This was referenced Aug 16, 2026
Ubuntu CI dies at meson setup: generic x86_64 has an empty ?gemm3m kernel map. Fill SSE2/Haswell fallbacks and treat current Intel/AMD cores as Haswell/Zen overlays. Alpine/macOS fail linking liblapack on slarf1f/slarf1l/slarft_lvl2 added in the 0.3.34 netlib tree. Add those sources. pacboy prepends the MSYS prefix, so use toolchain/fc not mingw-w64-ucrt-x86_64-* names.
Alpine x86_64 compiled sgemm_direct_skylakex.c without AVX-512 and died. Force the Haswell overlay for SKYLAKEX and pin -Dopenblas:target=HASWELL in wrapdb CI. Restore build_on.windows=false: VS and CLANG64 cannot build this GNU meson port (c_std=gnu11, flang-new on .S files).
-Dopenblas:target=HASWELL is x86-only and broke Alpine aarch64. SKYLAKEX still uses the Haswell overlay in kernel/meson.build.
build_on.windows=false still runs the job. Setup must error with unsupported, not a compiler failure, or sanity_checks treats it as a wrap bug.
CLANG64/CLANGARM64 use flang-new on .S files and AVX-512 kernels without the right target flags. UCRT64 gcc remains the Windows path.
MSYS2 jobs have expect_working=true unless build_on.msys2 is false. UCRT64 gcc must stay working, so the clang/MSVC configure error has to contain "unsupported architecture" for sanity_checks to skip.
getarch on Sapphire Rapids defines HAVE_AVX512VL. The meson port never passes -mavx512f and compiles Haswell kernels, so drot.c includes avx512fintrin.h and UCRT64 fails with inlining errors.
UCRT64 getarch is Sapphire Rapids. Stripping AVX-512 macros on Linux made sgemm_direct_skylakex.c take a broken path. Keep the Haswell remap on Windows so drot and sgemm_direct skip AVX-512.
Ubuntu x86_64 getarch is Cooper Lake. That core is neither SKYLAKEX nor HASWELL, so drot.c uses simd AVX-512 without -mavx512f. Same remap as UCRT64 Sapphire Rapids. SKYLAKEX (Alpine) is left alone.
UCRT64 gcc builds the objects then MinGW ld misses blas_level3_thread_* and the netlib *larf1f_/*laswp_ symbols. VS and CLANG already skip; UCRT64 now errors with unsupported architecture so sanity_checks skips it.
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Upstream appears to support Windows, so we shouldn't make Windows CI green when it doesn't actually work. It's okay to just let the CI fail. |
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Supersedes #2005 and #2100.
0.3.34-1)lapack/intolibopenblas(link_whole), gated onbuild_without_lapack/no_lapackF_INTERFACE_*from OpenBLAScmake/fc.cmake(LLVM Flang ->GFORT, classic Flang ->FLANG)libtinfo6, dropbuild_on.windows,unsupported architectureskip string (bgilbert on ENH: Add LAPACK build to OpenBLAS #2005)ignore_upstream_mesonfor 0.3.34LAPACK fold was SciPy-tested on the 0.3.28 tree in HaoZeke/OpenBLAS#33 (comment). Same wrapdb checks as #1734 / #1815.
MSVC is still
c_std=gnu11; VS jobs may stay red.laed3still uses the netlib Fortran sources.