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The Debian release of NumPy 2 and later comes with improved Multi-Arch support
for binary Python extensions:


 1. `pkg-config numpy --cflags` works out of the box. There is no need to
    set PKG_CONFIG_PATH as documented in the reference manual.

    If you want to remain compatible with other distributions, we recommend
    overriding PKG_CONFIG_PATH only if necessary, e.g.,

    : "${PKG_CONFIG:=pkg-config}"
    if ! $PKG_CONFIG --exists numpy; then
        export PKG_CONFIG_PATH=$(numpy-config --pkgconfigdir)
    fi


 2. numpy-config and `numpy.get_include()` query the MULTIARCH configuration
    variable from the sysconfig module. For cross builds, set the
    _PYTHON_SYSCONFIGDATA_NAME environment variable, e.g.

    export _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__${DEB_HOST_ARCH_OS}_${DEB_HOST_MULTIARCH}


 -- Timo Röhling <roehling@debian.org>  Mon, 16 Sep 2024 22:53:54 +0200

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