gh-93939: Build C extensions without setup.py (GH-94474)

Combines GH-93940, GH-94452, and GH-94433

1 files changed, 0 insertions, 97 deletions

diff --git a/Lib/_bootsubprocess.py b/Lib/_bootsubprocess.py
deleted file mode 100644
index 014782f616..0000000000
--- a/Lib/_bootsubprocess.py
+++ /dev/null
@@ -1,97 +0,0 @@
-"""
-Basic subprocess implementation for POSIX which only uses os functions. Only
-implement features required by setup.py to build C extension modules when
-subprocess is unavailable. setup.py is not used on Windows.
-"""
-import os
-
-
-# distutils.spawn used by distutils.command.build_ext
-# calls subprocess.Popen().wait()
-class Popen:
-    def __init__(self, cmd, env=None):
-        self._cmd = cmd
-        self._env = env
-        self.returncode = None
-
-    def wait(self):
-        pid = os.fork()
-        if pid == 0:
-            # Child process
-            try:
-                if self._env is not None:
-                    os.execve(self._cmd[0], self._cmd, self._env)
-                else:
-                    os.execv(self._cmd[0], self._cmd)
-            finally:
-                os._exit(1)
-        else:
-            # Parent process
-            _, status = os.waitpid(pid, 0)
-            self.returncode = os.waitstatus_to_exitcode(status)
-
-        return self.returncode
-
-
-def _check_cmd(cmd):
-    # Use regex [a-zA-Z0-9./-]+: reject empty string, space, etc.
-    safe_chars = []
-    for first, last in (("a", "z"), ("A", "Z"), ("0", "9")):
-        for ch in range(ord(first), ord(last) + 1):
-            safe_chars.append(chr(ch))
-    safe_chars.append("./-")
-    safe_chars = ''.join(safe_chars)
-
-    if isinstance(cmd, (tuple, list)):
-        check_strs = cmd
-    elif isinstance(cmd, str):
-        check_strs = [cmd]
-    else:
-        return False
-
-    for arg in check_strs:
-        if not isinstance(arg, str):
-            return False
-        if not arg:
-            # reject empty string
-            return False
-        for ch in arg:
-            if ch not in safe_chars:
-                return False
-
-    return True
-
-
-# _aix_support used by distutil.util calls subprocess.check_output()
-def check_output(cmd, **kwargs):
-    if kwargs:
-        raise NotImplementedError(repr(kwargs))
-
-    if not _check_cmd(cmd):
-        raise ValueError(f"unsupported command: {cmd!r}")
-
-    tmp_filename = "check_output.tmp"
-    if not isinstance(cmd, str):
-        cmd = " ".join(cmd)
-    cmd = f"{cmd} >{tmp_filename}"
-
-    try:
-        # system() spawns a shell
-        status = os.system(cmd)
-        exitcode = os.waitstatus_to_exitcode(status)
-        if exitcode:
-            raise ValueError(f"Command {cmd!r} returned non-zero "
-                             f"exit status {exitcode!r}")
-
-        try:
-            with open(tmp_filename, "rb") as fp:
-                stdout = fp.read()
-        except FileNotFoundError:
-            stdout = b''
-    finally:
-        try:
-            os.unlink(tmp_filename)
-        except OSError:
-            pass
-
-    return stdout