The build_ext logic uses sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")) to determine whether we're building a third-party Python extension, or a built-in Python extension. However, this check is wrong in cross-compilation mode, because the host Python interpreter might very well be installed in its prefix, when it is used to cross-compile the target modules and extensions. The current check would mis-detect this as we're building third-party Python modules, while we are in fact building the internal Python modules of the target Python. Therefore, use the existing sysconfig.python_build variable, which provides the information of whether we're building Python itself or not in a correct way.
Hi, thanks for the report and patch. How can I reproduce the error? Matthias: which versions did you change to support cross-compile? I understand this is a bug, not a new feature, so it should be fixed in all affected versions.
Distutils is now deprecated (see PEP 632) and all tagged issues are being closed. From now until removal, only release blocking issues will be considered for distutils. If this issue does not relate to distutils, please remove the component and reopen it. If you believe it still requires a fix, most likely the issue should be re-reported at https://github.com/pypa/setuptools
History
Date
User
Action
Args
2022-04-11 14:57:56
admin
set
github: 64411
2021-02-03 18:29:06
steve.dower
set
status: open -> closednosy: + steve.dowermessages: + resolution: out of datestage: patch review -> resolved
