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Diffstat (limited to 'node_modules/node-gyp/gyp/pylib/packaging/_manylinux.py')
| -rw-r--r-- | node_modules/node-gyp/gyp/pylib/packaging/_manylinux.py | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/node_modules/node-gyp/gyp/pylib/packaging/_manylinux.py b/node_modules/node-gyp/gyp/pylib/packaging/_manylinux.py deleted file mode 100644 index 3705d50..0000000 --- a/node_modules/node-gyp/gyp/pylib/packaging/_manylinux.py +++ /dev/null @@ -1,252 +0,0 @@ -import collections -import contextlib -import functools -import os -import re -import sys -import warnings -from typing import Dict, Generator, Iterator, NamedTuple, Optional, Sequence, Tuple - -from ._elffile import EIClass, EIData, ELFFile, EMachine - -EF_ARM_ABIMASK = 0xFF000000 -EF_ARM_ABI_VER5 = 0x05000000 -EF_ARM_ABI_FLOAT_HARD = 0x00000400 - - -# `os.PathLike` not a generic type until Python 3.9, so sticking with `str` -# as the type for `path` until then. -@contextlib.contextmanager -def _parse_elf(path: str) -> Generator[Optional[ELFFile], None, None]: - try: - with open(path, "rb") as f: - yield ELFFile(f) - except (OSError, TypeError, ValueError): - yield None - - -def _is_linux_armhf(executable: str) -> bool: - # hard-float ABI can be detected from the ELF header of the running - # process - # https://static.docs.arm.com/ihi0044/g/aaelf32.pdf - with _parse_elf(executable) as f: - return ( - f is not None - and f.capacity == EIClass.C32 - and f.encoding == EIData.Lsb - and f.machine == EMachine.Arm - and f.flags & EF_ARM_ABIMASK == EF_ARM_ABI_VER5 - and f.flags & EF_ARM_ABI_FLOAT_HARD == EF_ARM_ABI_FLOAT_HARD - ) - - -def _is_linux_i686(executable: str) -> bool: - with _parse_elf(executable) as f: - return ( - f is not None - and f.capacity == EIClass.C32 - and f.encoding == EIData.Lsb - and f.machine == EMachine.I386 - ) - - -def _have_compatible_abi(executable: str, archs: Sequence[str]) -> bool: - if "armv7l" in archs: - return _is_linux_armhf(executable) - if "i686" in archs: - return _is_linux_i686(executable) - allowed_archs = {"x86_64", "aarch64", "ppc64", "ppc64le", "s390x", "loongarch64"} - return any(arch in allowed_archs for arch in archs) - - -# If glibc ever changes its major version, we need to know what the last -# minor version was, so we can build the complete list of all versions. -# For now, guess what the highest minor version might be, assume it will -# be 50 for testing. Once this actually happens, update the dictionary -# with the actual value. -_LAST_GLIBC_MINOR: Dict[int, int] = collections.defaultdict(lambda: 50) - - -class _GLibCVersion(NamedTuple): - major: int - minor: int - - -def _glibc_version_string_confstr() -> Optional[str]: - """ - Primary implementation of glibc_version_string using os.confstr. - """ - # os.confstr is quite a bit faster than ctypes.DLL. It's also less likely - # to be broken or missing. This strategy is used in the standard library - # platform module. - # https://github.com/python/cpython/blob/fcf1d003bf4f0100c/Lib/platform.py#L175-L183 - try: - # Should be a string like "glibc 2.17". - version_string: str = getattr(os, "confstr")("CS_GNU_LIBC_VERSION") - assert version_string is not None - _, version = version_string.rsplit() - except (AssertionError, AttributeError, OSError, ValueError): - # os.confstr() or CS_GNU_LIBC_VERSION not available (or a bad value)... - return None - return version - - -def _glibc_version_string_ctypes() -> Optional[str]: - """ - Fallback implementation of glibc_version_string using ctypes. - """ - try: - import ctypes - except ImportError: - return None - - # ctypes.CDLL(None) internally calls dlopen(NULL), and as the dlopen - # manpage says, "If filename is NULL, then the returned handle is for the - # main program". This way we can let the linker do the work to figure out - # which libc our process is actually using. - # - # We must also handle the special case where the executable is not a - # dynamically linked executable. This can occur when using musl libc, - # for example. In this situation, dlopen() will error, leading to an - # OSError. Interestingly, at least in the case of musl, there is no - # errno set on the OSError. The single string argument used to construct - # OSError comes from libc itself and is therefore not portable to - # hard code here. In any case, failure to call dlopen() means we - # can proceed, so we bail on our attempt. - try: - process_namespace = ctypes.CDLL(None) - except OSError: - return None - - try: - gnu_get_libc_version = process_namespace.gnu_get_libc_version - except AttributeError: - # Symbol doesn't exist -> therefore, we are not linked to - # glibc. - return None - - # Call gnu_get_libc_version, which returns a string like "2.5" - gnu_get_libc_version.restype = ctypes.c_char_p - version_str: str = gnu_get_libc_version() - # py2 / py3 compatibility: - if not isinstance(version_str, str): - version_str = version_str.decode("ascii") - - return version_str - - -def _glibc_version_string() -> Optional[str]: - """Returns glibc version string, or None if not using glibc.""" - return _glibc_version_string_confstr() or _glibc_version_string_ctypes() - - -def _parse_glibc_version(version_str: str) -> Tuple[int, int]: - """Parse glibc version. - - We use a regexp instead of str.split because we want to discard any - random junk that might come after the minor version -- this might happen - in patched/forked versions of glibc (e.g. Linaro's version of glibc - uses version strings like "2.20-2014.11"). See gh-3588. - """ - m = re.match(r"(?P<major>[0-9]+)\.(?P<minor>[0-9]+)", version_str) - if not m: - warnings.warn( - f"Expected glibc version with 2 components major.minor," - f" got: {version_str}", - RuntimeWarning, - ) - return -1, -1 - return int(m.group("major")), int(m.group("minor")) - - -@functools.lru_cache() -def _get_glibc_version() -> Tuple[int, int]: - version_str = _glibc_version_string() - if version_str is None: - return (-1, -1) - return _parse_glibc_version(version_str) - - -# From PEP 513, PEP 600 -def _is_compatible(arch: str, version: _GLibCVersion) -> bool: - sys_glibc = _get_glibc_version() - if sys_glibc < version: - return False - # Check for presence of _manylinux module. - try: - import _manylinux # noqa - except ImportError: - return True - if hasattr(_manylinux, "manylinux_compatible"): - result = _manylinux.manylinux_compatible(version[0], version[1], arch) - if result is not None: - return bool(result) - return True - if version == _GLibCVersion(2, 5): - if hasattr(_manylinux, "manylinux1_compatible"): - return bool(_manylinux.manylinux1_compatible) - if version == _GLibCVersion(2, 12): - if hasattr(_manylinux, "manylinux2010_compatible"): - return bool(_manylinux.manylinux2010_compatible) - if version == _GLibCVersion(2, 17): - if hasattr(_manylinux, "manylinux2014_compatible"): - return bool(_manylinux.manylinux2014_compatible) - return True - - -_LEGACY_MANYLINUX_MAP = { - # CentOS 7 w/ glibc 2.17 (PEP 599) - (2, 17): "manylinux2014", - # CentOS 6 w/ glibc 2.12 (PEP 571) - (2, 12): "manylinux2010", - # CentOS 5 w/ glibc 2.5 (PEP 513) - (2, 5): "manylinux1", -} - - -def platform_tags(archs: Sequence[str]) -> Iterator[str]: - """Generate manylinux tags compatible to the current platform. - - :param archs: Sequence of compatible architectures. - The first one shall be the closest to the actual architecture and be the part of - platform tag after the ``linux_`` prefix, e.g. ``x86_64``. - The ``linux_`` prefix is assumed as a prerequisite for the current platform to - be manylinux-compatible. - - :returns: An iterator of compatible manylinux tags. - """ - if not _have_compatible_abi(sys.executable, archs): - return - # Oldest glibc to be supported regardless of architecture is (2, 17). - too_old_glibc2 = _GLibCVersion(2, 16) - if set(archs) & {"x86_64", "i686"}: - # On x86/i686 also oldest glibc to be supported is (2, 5). - too_old_glibc2 = _GLibCVersion(2, 4) - current_glibc = _GLibCVersion(*_get_glibc_version()) - glibc_max_list = [current_glibc] - # We can assume compatibility across glibc major versions. - # https://sourceware.org/bugzilla/show_bug.cgi?id=24636 - # - # Build a list of maximum glibc versions so that we can - # output the canonical list of all glibc from current_glibc - # down to too_old_glibc2, including all intermediary versions. - for glibc_major in range(current_glibc.major - 1, 1, -1): - glibc_minor = _LAST_GLIBC_MINOR[glibc_major] - glibc_max_list.append(_GLibCVersion(glibc_major, glibc_minor)) - for arch in archs: - for glibc_max in glibc_max_list: - if glibc_max.major == too_old_glibc2.major: - min_minor = too_old_glibc2.minor - else: - # For other glibc major versions oldest supported is (x, 0). - min_minor = -1 - for glibc_minor in range(glibc_max.minor, min_minor, -1): - glibc_version = _GLibCVersion(glibc_max.major, glibc_minor) - tag = "manylinux_{}_{}".format(*glibc_version) - if _is_compatible(arch, glibc_version): - yield f"{tag}_{arch}" - # Handle the legacy manylinux1, manylinux2010, manylinux2014 tags. - if glibc_version in _LEGACY_MANYLINUX_MAP: - legacy_tag = _LEGACY_MANYLINUX_MAP[glibc_version] - if _is_compatible(arch, glibc_version): - yield f"{legacy_tag}_{arch}" |