gh-96305: Fix AIX build by avoiding subprocess during bootstrap (#96429)

* Fix AIX build by avoiding `subprocess` during bootstrap.
This commit is contained in:
Ayappan Perumal 2023-02-03 02:00:49 +05:30 committed by GitHub
parent 24cbc7a2a0
commit ba4731d149
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2 changed files with 27 additions and 2 deletions

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

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@ -0,0 +1,2 @@
``_aix_support`` now uses a simple code to get platform details rather than
the now non-existent ``_bootsubprocess`` during bootstrap.