Ci blas #15
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Ci blas #15
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Adapted largely from NumPy's `linux_blas.yml`
OpenBLAS is detected without pkg-config, because Fedora does not ship an openblas.pc file. FlexiBLAS is detected through pkg-config.
This was left out initially when adding support for building with Meson. The numpy.distutils based build supported ILP64 builds with OpenBLAS and its `64_` symbol suffix scheme. We now add this back and make it more generic, so that it also supports the `_64` scheme of MKL as well as the `$NEWLAPACK_ILP64` scheme from Accelerate.
This avoids build errors that look like: ``` ../scipy/_build_utils/src/wrap_g77_abi_c.c:13:16: error: use of undeclared identifier 'cblas_cdotc_sub' ``` when one uses Accelerate with the `$NEWLAPACK` symbol suffix for example. [ci skip]
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