update to boost 1.75 and python 3.9.4

Author: chcg

PythonLib/full/_aix_support.py

@@ -0,0 +1,89 @@
+"""Shared AIX support functions."""
+
+import sys
+import sysconfig
+
+try:
+    import subprocess
+except ImportError:  # pragma: no cover
+    # _aix_support is used in distutils by setup.py to build C extensions,
+    # before subprocess dependencies like _posixsubprocess are available.
+    import _bootsubprocess as subprocess
+
+
+def _aix_tag(vrtl, bd):
+    # type: (List[int], int) -> str
+    # Infer the ABI bitwidth from maxsize (assuming 64 bit as the default)
+    _sz = 32 if sys.maxsize == (2**31-1) else 64
+    # vrtl[version, release, technology_level]
+    return "aix-{:1x}{:1d}{:02d}-{:04d}-{}".format(vrtl[0], vrtl[1], vrtl[2], bd, _sz)
+
+
+# extract version, release and technology level from a VRMF string
+def _aix_vrtl(vrmf):
+    # type: (str) -> List[int]
+    v, r, tl = vrmf.split(".")[:3]
+    return [int(v[-1]), int(r), int(tl)]
+
+
+def _aix_bosmp64():
+    # type: () -> Tuple[str, int]
+    """
+    Return a Tuple[str, int] e.g., ['7.1.4.34', 1806]
+    The fileset bos.mp64 is the AIX kernel. It's VRMF and builddate
+    reflect the current ABI levels of the runtime environment.
+    """
+    # We expect all AIX systems to have lslpp installed in this location
+    out = subprocess.check_output(["/usr/bin/lslpp", "-Lqc", "bos.mp64"])
+    out = out.decode("utf-8")
+    out = out.strip().split(":")  # type: ignore
+    # Use str() and int() to help mypy see types
+    return (str(out[2]), int(out[-1]))
+
+
+def aix_platform():
+    # type: () -> str
+    """
+    AIX filesets are identified by four decimal values: V.R.M.F.
+    V (version) and R (release) can be retreived using ``uname``
+    Since 2007, starting with AIX 5.3 TL7, the M value has been
+    included with the fileset bos.mp64 and represents the Technology
+    Level (TL) of AIX. The F (Fix) value also increases, but is not
+    relevant for comparing releases and binary compatibility.
+    For binary compatibility the so-called builddate is needed.
+    Again, the builddate of an AIX release is associated with bos.mp64.
+    AIX ABI compatibility is described  as guaranteed at: https://www.ibm.com/\
+    support/knowledgecenter/en/ssw_aix_72/install/binary_compatability.html
+
+    For pep425 purposes the AIX platform tag becomes:
+    "aix-{:1x}{:1d}{:02d}-{:04d}-{}".format(v, r, tl, builddate, bitsize)
+    e.g., "aix-6107-1415-32" for AIX 6.1 TL7 bd 1415, 32-bit
+    and, "aix-6107-1415-64" for AIX 6.1 TL7 bd 1415, 64-bit
+    """
+    vrmf, bd = _aix_bosmp64()
+    return _aix_tag(_aix_vrtl(vrmf), bd)
+
+
+# extract vrtl from the BUILD_GNU_TYPE as an int
+def _aix_bgt():
+    # type: () -> List[int]
+    gnu_type = sysconfig.get_config_var("BUILD_GNU_TYPE")
+    if not gnu_type:
+        raise ValueError("BUILD_GNU_TYPE is not defined")
+    return _aix_vrtl(vrmf=gnu_type)
+
+
+def aix_buildtag():
+    # type: () -> str
+    """
+    Return the platform_tag of the system Python was built on.
+    """
+    # AIX_BUILDDATE is defined by configure with:
+    # lslpp -Lcq bos.mp64 | awk -F:  '{ print $NF }'
+    build_date = sysconfig.get_config_var("AIX_BUILDDATE")
+    try:
+        build_date = int(build_date)
+    except (ValueError, TypeError):
+        raise ValueError(f"AIX_BUILDDATE is not defined or invalid: "
+                         f"{build_date!r}")
+    return _aix_tag(_aix_bgt(), build_date)

PythonLib/full/_bootsubprocess.py

@@ -0,0 +1,97 @@
+"""
+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