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gh-96305: Fix AIX build by avoiding subprocess during bootstrap (#96429)
* Fix AIX build by avoiding `subprocess` during bootstrap.
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@ -1,10 +1,28 @@
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"""Shared AIX support functions."""
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import subprocess
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import sys
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import sysconfig
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# Taken from _osx_support _read_output function
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def _read_cmd_output(commandstring, capture_stderr=False):
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"""Output from successful command execution or None"""
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# Similar to os.popen(commandstring, "r").read(),
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# but without actually using os.popen because that
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# function is not usable during python bootstrap.
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import os
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import contextlib
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fp = open("/tmp/_aix_support.%s"%(
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os.getpid(),), "w+b")
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with contextlib.closing(fp) as fp:
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if capture_stderr:
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cmd = "%s >'%s' 2>&1" % (commandstring, fp.name)
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else:
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cmd = "%s 2>/dev/null >'%s'" % (commandstring, fp.name)
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return fp.read() if not os.system(cmd) else None
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def _aix_tag(vrtl, bd):
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# type: (List[int], int) -> str
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# Infer the ABI bitwidth from maxsize (assuming 64 bit as the default)
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@ -30,7 +48,12 @@ def _aix_bos_rte():
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If no builddate is found give a value that will satisfy pep425 related queries
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"""
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# All AIX systems to have lslpp installed in this location
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out = subprocess.check_output(["/usr/bin/lslpp", "-Lqc", "bos.rte"])
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# subprocess may not be available during python bootstrap
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try:
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import subprocess
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out = subprocess.check_output(["/usr/bin/lslpp", "-Lqc", "bos.rte"])
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except ImportError:
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out = _read_cmd_output("/usr/bin/lslpp -Lqc bos.rte")
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out = out.decode("utf-8")
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out = out.strip().split(":") # type: ignore
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_bd = int(out[-1]) if out[-1] != '' else 9988
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@ -0,0 +1,2 @@
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``_aix_support`` now uses a simple code to get platform details rather than
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the now non-existent ``_bootsubprocess`` during bootstrap.
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