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BLD: Add NPY_DISABLE_SVML env var to opt out of SVML #20842

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merged 1 commit into from Jan 17, 2022
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BLD: Add NPY_DISABLE_SVML env var to opt out of SVML #20842

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7 changes: 7 additions & 0 deletions numpy/core/setup.py
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Expand Up @@ -24,6 +24,11 @@
NPY_RELAXED_STRIDES_DEBUG = (os.environ.get('NPY_RELAXED_STRIDES_DEBUG', "0") != "0")
NPY_RELAXED_STRIDES_DEBUG = NPY_RELAXED_STRIDES_DEBUG and NPY_RELAXED_STRIDES_CHECKING

# Set NPY_DISABLE_SVML=1 in the environment to disable the vendored SVML
# library. This option only has significance on a Linux x86_64 host and is most
# useful to avoid improperly requiring SVML when cross compiling.
NPY_DISABLE_SVML = (os.environ.get('NPY_DISABLE_SVML', "0") == "1")

# XXX: ugly, we use a class to avoid calling twice some expensive functions in
# config.h/numpyconfig.h. I don't see a better way because distutils force
# config.h generation inside an Extension class, and as such sharing
Expand Down Expand Up @@ -68,6 +73,8 @@ def can_link_svml():
"""SVML library is supported only on x86_64 architecture and currently
only on linux
"""
if NPY_DISABLE_SVML:
return False
machine = platform.machine()
system = platform.system()
return "x86_64" in machine and system == "Linux"
Expand Down