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Issue #15298: refactor previous fix from 66959d419369.

This commit is contained in:
Trent Nelson 2012-10-17 18:03:24 -04:00
parent 016884cbaa
commit ecbe2a9185
1 changed files with 17 additions and 12 deletions
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29
Lib/sysconfig.py
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@ -396,24 +396,29 @@ def _generate_posix_vars():
# `make pybuilddir.txt` target -- which is a precursor to the
# _sysconfigdata.py module being constructed. Unfortunately,
# get_config_vars() eventually calls _init_posix(), which attempts
# to import _sysconfigdata, which we won't have built yet. So,
# write out _sysconfigdata.py to the current directory first,
# then call get_platform() to get the pybuilddir, then move it.
destfile = '_sysconfigdata.py'
with open(destfile, 'w', encoding='utf8') as f:
f.write('# system configuration generated and used by'
' the sysconfig module\n')
f.write('build_time_vars = ')
pprint.pprint(vars, stream=f)
# to import _sysconfigdata, which we won't have built yet. In order
# for _init_posix() to work, if we're on Darwin, just mock up the
# _sysconfigdata module manually and populate it with the build vars.
# This is more than sufficient for ensuring the subsequent call to
# get_platform() succeeds.
name = '_sysconfigdata'
if 'darwin' in sys.platform:
import imp
module = imp.new_module(name)
module.build_time_vars = vars
sys.modules[name] = module
pybuilddir = 'build/lib.%s-%s' % (get_platform(), sys.version[:3])
if hasattr(sys, "gettotalrefcount"):
pybuilddir += '-pydebug'
os.makedirs(pybuilddir, exist_ok=True)
target = os.path.join(pybuilddir, destfile)
destfile = os.path.join(pybuilddir, name + '.py')
# Relocate _sysconfigdata.py into its final home.
os.rename(destfile, target)
with open(destfile, 'w', encoding='utf8') as f:
f.write('# system configuration generated and used by'
' the sysconfig module\n')
f.write('build_time_vars = ')
pprint.pprint(vars, stream=f)
# Create file used for sys.path fixup -- see Modules/getpath.c
with open('pybuilddir.txt', 'w', encoding='ascii') as f: