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Update meson.options #30317

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79 changes: 52 additions & 27 deletions meson.options
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Original file line number Diff line number Diff line change
@@ -1,45 +1,70 @@
# BLAS / LAPACK Selection
option('blas', type: 'string', value: 'auto',
description: 'Option for BLAS library selection. By default, try to find any in the order given by `blas-order`')
description: 'BLAS library to use (default: autodetect based on blas-order)')
option('lapack', type: 'string', value: 'auto',
description: 'Option for LAPACK library selection. By default, try to find any in the order given by `lapack-order`')
option('allow-noblas', type: 'boolean', value: true,
description: 'If set to true, allow building with (slow!) internal fallback routines')
description: 'LAPACK library to use (default: autodetect based on lapack-order)')

option('blas-order', type: 'array', value: ['auto'],
description: 'Order of BLAS libraries to search for. E.g.: mkl,openblas,blis,blas')
description: 'Preferred search order for BLAS libraries (e.g., mkl, openblas, blis, blas)')
option('lapack-order', type: 'array', value: ['auto'],
description: 'Order of LAPACK libraries to search for. E.g.: mkl,openblas,lapack')
description: 'Preferred search order for LAPACK libraries (e.g., mkl, openblas, lapack)')

option('allow-noblas', type: 'boolean', value: true,
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@rgommers rgommers Nov 30, 2025

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This goes together with the blas/lapack options, it's better in its original place - please put it back there.

description: 'Allow fallback slow internal BLAS implementation if no library is found')

option('use-ilp64', type: 'boolean', value: false,
description: 'Use ILP64 (64-bit integer) BLAS and LAPACK interfaces')
description: 'Use ILP64 (64-bit integer) BLAS/LAPACK interfaces')

option('blas-symbol-suffix', type: 'string', value: 'auto',
description: 'BLAS and LAPACK symbol suffix to use, if any')
description: 'Symbol suffix for BLAS/LAPACK symbols (if any)')


# MKL / Library Behavior
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@rgommers rgommers Nov 30, 2025

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This is only a single option so doesn't seem to deserve a separate header; it's part of the BLAS options.

option('mkl-threading', type: 'string', value: 'auto',
description: 'MKL threading method, one of: `seq`, `iomp`, `gomp`, `tbb`')
choices: ['auto', 'seq', 'iomp', 'gomp', 'tbb'],
description: 'Threading backend for MKL')

option('disable-svml', type: 'boolean', value: false,
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These three options should be part of the SIMD options sections

description: 'Disable building against SVML')
description: 'Disable use of Intel SVML')
option('disable-highway', type: 'boolean', value: false,
description: 'Disables SIMD-optimized operations related to Google Highway')
description: 'Disable SIMD ops based on Google Highway')
option('disable-intel-sort', type: 'boolean', value: false,
description: 'Disables SIMD-optimized operations related to Intel x86-simd-sort')
description: 'Disable Intel x86-simd-sort optimized sort algorithms')


# Threading & Parallelism
option('disable-threading', type: 'boolean', value: false,
description: 'Disable threading support (see `NPY_ALLOW_THREADS` docs)')
description: 'Completely disable NumPy threading support')
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The NPY_ALLOW_THREADS hint is useful, it guides the user to https://numpy.org/devdocs/reference/c-api/array.html#threading-support. Please restore its mention.


option('enable-openmp', type: 'boolean', value: false,
description: 'Enable building NumPy with openmp support')
description: 'Enable compilation with OpenMP support')


# CPU Optimization / SIMD
option('disable-optimization', type: 'boolean', value: false,
description: 'Disable CPU optimized code (dispatch,simd,unroll...)')
description: 'Disable all CPU optimizations (dispatch, SIMD, loop unrolling)')

option('cpu-baseline', type: 'string', value: 'min',
description: 'Minimal set of required CPU features')
description: 'Required baseline CPU features')

option('cpu-baseline-detect', type: 'feature', value: 'auto',
description: 'Detect CPU baseline from the compiler flags')
description: 'Detect CPU baseline from compiler flags automatically')

option('cpu-dispatch', type: 'string', value: 'max',
description: 'Dispatched set of additional CPU features')
description: 'Additional CPU features to dispatch to (beyond baseline)')


# SIMD Test Options
option('test-simd', type: 'array',
value: [
'BASELINE', 'X86_V2', 'X86_V3', 'X86_V4',
'VSX', 'VSX2', 'VSX3', 'VSX4',
'NEON', 'ASIMD',
'VX', 'VXE', 'VXE2',
'LSX',
],
description: 'Specify a list of CPU features to be tested against NumPy SIMD interface')
value: [
'BASELINE', 'X86_V2', 'X86_V3', 'X86_V4',
'VSX', 'VSX2', 'VSX3', 'VSX4',
'NEON', 'ASIMD',
'VX', 'VXE', 'VXE2',
'LSX',
],
description: 'CPU SIMD feature sets to be tested by the NumPy SIMD test module')

option('test-simd-args', type: 'string', value: '',
description: 'Extra args to be passed to the `_simd` module that is used for testing the NumPy SIMD interface')
description: 'Extra arguments passed to the internal _simd test module')