Enable os.memfd_create through runtime weak linking#1164
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We should definitely try to upstream any weak linking implementations |
zanieb
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Rebased on top of merged #1163 |
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Always build CPython with
os.memfd_createbut remove the Python function from the namespace at runtime when glibc does not provide the an implementation.This is accomplished using a weak
memfd_createsymbol which is evaluated at runtime.This requires the modern kernel UAPI headers from #1163 to define the
MFD_*constants.